/* Intel(R) Ethernet Connection E800 Series Linux Driver */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <generated/utsrelease.h> #include <linux/crash_dump.h> #include"ice.h" #include"ice_base.h" #include"ice_lib.h" #include"ice_fltr.h" #include"ice_dcb_lib.h" #include"ice_dcb_nl.h" #include"devlink/devlink.h" #include"devlink/port.h" #include"ice_sf_eth.h" #include"ice_hwmon.h" /* Including ice_trace.h with CREATE_TRACE_POINTS defined will generate the * ice tracepoint functions. This must be done exactly once across the * ice driver.
*/ #define CREATE_TRACE_POINTS #include"ice_trace.h" #include"ice_eswitch.h" #include"ice_tc_lib.h" #include"ice_vsi_vlan_ops.h" #include <net/xdp_sock_drv.h>
/** * ice_hw_to_dev - Get device pointer from the hardware structure * @hw: pointer to the device HW structure * * Used to access the device pointer from compilation units which can't easily * include the definition of struct ice_pf without leading to circular header * dependencies.
*/ struct device *ice_hw_to_dev(struct ice_hw *hw)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
/** * ice_get_tx_pending - returns number of Tx descriptors not processed * @ring: the ring of descriptors
*/ static u16 ice_get_tx_pending(struct ice_tx_ring *ring)
{
u16 head, tail;
head = ring->next_to_clean;
tail = ring->next_to_use;
if (!tx_ring) continue; if (ice_ring_ch_enabled(tx_ring)) continue;
ring_stats = tx_ring->ring_stats; if (!ring_stats) continue;
if (tx_ring->desc) { /* If packet counter has not changed the queue is * likely stalled, so force an interrupt for this * queue. * * prev_pkt would be negative if there was no * pending work.
*/
packets = ring_stats->stats.pkts & INT_MAX; if (ring_stats->tx_stats.prev_pkt == packets) { /* Trigger sw interrupt to revive the queue */
ice_trigger_sw_intr(hw, tx_ring->q_vector); continue;
}
/* Memory barrier between read of packet count and call * to ice_get_tx_pending()
*/
smp_rmb();
ring_stats->tx_stats.prev_pkt =
ice_get_tx_pending(tx_ring) ? packets : -1;
}
}
}
/** * ice_init_mac_fltr - Set initial MAC filters * @pf: board private structure * * Set initial set of MAC filters for PF VSI; configure filters for permanent * address and broadcast address. If an error is encountered, netdevice will be * unregistered.
*/ staticint ice_init_mac_fltr(struct ice_pf *pf)
{ struct ice_vsi *vsi;
u8 *perm_addr;
vsi = ice_get_main_vsi(pf); if (!vsi) return -EINVAL;
/** * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced * @netdev: the net device on which the sync is happening * @addr: MAC address to sync * * This is a callback function which is called by the in kernel device sync * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only * populates the tmp_sync_list, which is later used by ice_add_mac to add the * MAC filters from the hardware.
*/ staticint ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
ICE_FWD_TO_VSI)) return -EINVAL;
return 0;
}
/** * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced * @netdev: the net device on which the unsync is happening * @addr: MAC address to unsync * * This is a callback function which is called by the in kernel device unsync * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only * populates the tmp_unsync_list, which is later used by ice_remove_mac to * delete the MAC filters from the hardware.
*/ staticint ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi;
/* Under some circumstances, we might receive a request to delete our * own device address from our uc list. Because we store the device * address in the VSI's MAC filter list, we need to ignore such * requests and not delete our device address from this list.
*/ if (ether_addr_equal(addr, netdev->dev_addr)) return 0;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
ICE_FWD_TO_VSI)) return -EINVAL;
return 0;
}
/** * ice_vsi_fltr_changed - check if filter state changed * @vsi: VSI to be checked * * returns true if filter state has changed, false otherwise.
*/ staticbool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{ return test_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state) ||
test_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
}
/** * ice_set_promisc - Enable promiscuous mode for a given PF * @vsi: the VSI being configured * @promisc_m: mask of promiscuous config bits *
*/ staticint ice_set_promisc(struct ice_vsi *vsi, u8 promisc_m)
{ int status;
if (vsi->type != ICE_VSI_PF) return 0;
if (ice_vsi_has_non_zero_vlans(vsi)) {
promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
status = ice_fltr_set_vlan_vsi_promisc(&vsi->back->hw, vsi,
promisc_m);
} else {
status = ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
promisc_m, 0);
} if (status && status != -EEXIST) return status;
netdev_dbg(vsi->netdev, "set promisc filter bits for VSI %i: 0x%x\n",
vsi->vsi_num, promisc_m); return 0;
}
/** * ice_clear_promisc - Disable promiscuous mode for a given PF * @vsi: the VSI being configured * @promisc_m: mask of promiscuous config bits *
*/ staticint ice_clear_promisc(struct ice_vsi *vsi, u8 promisc_m)
{ int status;
if (vsi->type != ICE_VSI_PF) return 0;
if (ice_vsi_has_non_zero_vlans(vsi)) {
promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
status = ice_fltr_clear_vlan_vsi_promisc(&vsi->back->hw, vsi,
promisc_m);
} else {
status = ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
promisc_m, 0);
}
netdev_dbg(vsi->netdev, "clear promisc filter bits for VSI %i: 0x%x\n",
vsi->vsi_num, promisc_m); return status;
}
/** * ice_vsi_sync_fltr - Update the VSI filter list to the HW * @vsi: ptr to the VSI * * Push any outstanding VSI filter changes through the AdminQ.
*/ staticint ice_vsi_sync_fltr(struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); struct device *dev = ice_pf_to_dev(vsi->back); struct net_device *netdev = vsi->netdev; bool promisc_forced_on = false; struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw;
u32 changed_flags = 0; int err;
if (!vsi->netdev) return -EINVAL;
while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
/* Remove MAC addresses in the unsync list */
err = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
ice_fltr_free_list(dev, &vsi->tmp_unsync_list); if (err) {
netdev_err(netdev, "Failed to delete MAC filters\n"); /* if we failed because of alloc failures, just bail */ if (err == -ENOMEM) goto out;
}
/* Add MAC addresses in the sync list */
err = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
ice_fltr_free_list(dev, &vsi->tmp_sync_list); /* If filter is added successfully or already exists, do not go into * 'if' condition and report it as error. Instead continue processing * rest of the function.
*/ if (err && err != -EEXIST) {
netdev_err(netdev, "Failed to add MAC filters\n"); /* If there is no more space for new umac filters, VSI * should go into promiscuous mode. There should be some * space reserved for promiscuous filters.
*/ if (hw->adminq.sq_last_status == LIBIE_AQ_RC_ENOSPC &&
!test_and_set_bit(ICE_FLTR_OVERFLOW_PROMISC,
vsi->state)) {
promisc_forced_on = true;
netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
vsi->vsi_num);
} else { goto out;
}
}
err = 0; /* check for changes in promiscuous modes */ if (changed_flags & IFF_ALLMULTI) { if (vsi->current_netdev_flags & IFF_ALLMULTI) {
err = ice_set_promisc(vsi, ICE_MCAST_PROMISC_BITS); if (err) {
vsi->current_netdev_flags &= ~IFF_ALLMULTI; goto out_promisc;
}
} else { /* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
err = ice_clear_promisc(vsi, ICE_MCAST_PROMISC_BITS); if (err) {
vsi->current_netdev_flags |= IFF_ALLMULTI; goto out_promisc;
}
}
}
if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
test_bit(ICE_VSI_PROMISC_CHANGED, vsi->state)) {
clear_bit(ICE_VSI_PROMISC_CHANGED, vsi->state); if (vsi->current_netdev_flags & IFF_PROMISC) { /* Apply Rx filter rule to get traffic from wire */ if (!ice_is_dflt_vsi_in_use(vsi->port_info)) {
err = ice_set_dflt_vsi(vsi); if (err && err != -EEXIST) {
netdev_err(netdev, "Error %d setting default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags &=
~IFF_PROMISC; goto out_promisc;
}
err = 0;
vlan_ops->dis_rx_filtering(vsi);
/* promiscuous mode implies allmulticast so * that VSIs that are in promiscuous mode are * subscribed to multicast packets coming to * the port
*/
err = ice_set_promisc(vsi,
ICE_MCAST_PROMISC_BITS); if (err) goto out_promisc;
}
} else { /* Clear Rx filter to remove traffic from wire */ if (ice_is_vsi_dflt_vsi(vsi)) {
err = ice_clear_dflt_vsi(vsi); if (err) {
netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags |=
IFF_PROMISC; goto out_promisc;
} if (vsi->netdev->features &
NETIF_F_HW_VLAN_CTAG_FILTER)
vlan_ops->ena_rx_filtering(vsi);
}
/* disable allmulti here, but only if allmulti is not * still enabled for the netdev
*/ if (!(vsi->current_netdev_flags & IFF_ALLMULTI)) {
err = ice_clear_promisc(vsi,
ICE_MCAST_PROMISC_BITS); if (err) {
netdev_err(netdev, "Error %d clearing multicast promiscuous on VSI %i\n",
err, vsi->vsi_num);
}
}
}
} gotoexit;
out_promisc:
set_bit(ICE_VSI_PROMISC_CHANGED, vsi->state); gotoexit;
out: /* if something went wrong then set the changed flag so we try again */
set_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state); exit:
clear_bit(ICE_CFG_BUSY, vsi->state); return err;
}
/** * ice_sync_fltr_subtask - Sync the VSI filter list with HW * @pf: board private structure
*/ staticvoid ice_sync_fltr_subtask(struct ice_pf *pf)
{ int v;
if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags))) return;
clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
ice_for_each_vsi(pf, v) if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
ice_vsi_sync_fltr(pf->vsi[v])) { /* come back and try again later */
set_bit(ICE_FLAG_FLTR_SYNC, pf->flags); break;
}
}
/** * ice_pf_dis_all_vsi - Pause all VSIs on a PF * @pf: the PF * @locked: is the rtnl_lock already held
*/ staticvoid ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked)
{ int node; int v;
ice_for_each_vsi(pf, v) if (pf->vsi[v])
ice_dis_vsi(pf->vsi[v], locked);
/* already prepared for reset */ if (test_bit(ICE_PREPARED_FOR_RESET, pf->state)) return;
synchronize_irq(pf->oicr_irq.virq);
ice_unplug_aux_dev(pf);
/* Notify VFs of impending reset */ if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
/* Disable VFs until reset is completed */
mutex_lock(&pf->vfs.table_lock);
ice_for_each_vf(pf, bkt, vf)
ice_set_vf_state_dis(vf);
mutex_unlock(&pf->vfs.table_lock);
if (ice_is_eswitch_mode_switchdev(pf)) {
rtnl_lock();
ice_eswitch_br_fdb_flush(pf->eswitch.br_offloads->bridge);
rtnl_unlock();
}
/* release ADQ specific HW and SW resources */
vsi = ice_get_main_vsi(pf); if (!vsi) goto skip;
/* to be on safe side, reset orig_rss_size so that normal flow * of deciding rss_size can take precedence
*/
vsi->orig_rss_size = 0;
if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) { if (reset_type == ICE_RESET_PFR) {
vsi->old_ena_tc = vsi->all_enatc;
vsi->old_numtc = vsi->all_numtc;
} else {
ice_remove_q_channels(vsi, true);
/* for other reset type, do not support channel rebuild * hence reset needed info
*/
vsi->old_ena_tc = 0;
vsi->all_enatc = 0;
vsi->old_numtc = 0;
vsi->all_numtc = 0;
vsi->req_txq = 0;
vsi->req_rxq = 0;
clear_bit(ICE_FLAG_TC_MQPRIO, pf->flags);
memset(&vsi->mqprio_qopt, 0, sizeof(vsi->mqprio_qopt));
}
}
if (vsi->netdev)
netif_device_detach(vsi->netdev);
skip:
/* clear SW filtering DB */
ice_clear_hw_tbls(hw); /* disable the VSIs and their queues that are not already DOWN */
set_bit(ICE_VSI_REBUILD_PENDING, ice_get_main_vsi(pf)->state);
ice_pf_dis_all_vsi(pf, false);
if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_prepare_for_reset(pf, reset_type);
if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_exit(pf);
if (hw->port_info)
ice_sched_clear_port(hw->port_info);
ice_shutdown_all_ctrlq(hw, false);
set_bit(ICE_PREPARED_FOR_RESET, pf->state);
}
/** * ice_do_reset - Initiate one of many types of resets * @pf: board private structure * @reset_type: reset type requested before this function was called.
*/ staticvoid ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw;
/* PFR is a bit of a special case because it doesn't result in an OICR * interrupt. So for PFR, rebuild after the reset and clear the reset- * associated state bits.
*/ if (reset_type == ICE_RESET_PFR) {
pf->pfr_count++;
ice_rebuild(pf, reset_type);
clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(ICE_PFR_REQ, pf->state);
wake_up(&pf->reset_wait_queue);
ice_reset_all_vfs(pf);
}
}
/** * ice_reset_subtask - Set up for resetting the device and driver * @pf: board private structure
*/ staticvoid ice_reset_subtask(struct ice_pf *pf)
{ enum ice_reset_req reset_type = ICE_RESET_INVAL;
/* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an * OICR interrupt. The OICR handler (ice_misc_intr) determines what type * of reset is pending and sets bits in pf->state indicating the reset * type and ICE_RESET_OICR_RECV. So, if the latter bit is set * prepare for pending reset if not already (for PF software-initiated * global resets the software should already be prepared for it as * indicated by ICE_PREPARED_FOR_RESET; for global resets initiated * by firmware or software on other PFs, that bit is not set so prepare * for the reset now), poll for reset done, rebuild and return.
*/ if (test_bit(ICE_RESET_OICR_RECV, pf->state)) { /* Perform the largest reset requested */ if (test_and_clear_bit(ICE_CORER_RECV, pf->state))
reset_type = ICE_RESET_CORER; if (test_and_clear_bit(ICE_GLOBR_RECV, pf->state))
reset_type = ICE_RESET_GLOBR; if (test_and_clear_bit(ICE_EMPR_RECV, pf->state))
reset_type = ICE_RESET_EMPR; /* return if no valid reset type requested */ if (reset_type == ICE_RESET_INVAL) return;
ice_prepare_for_reset(pf, reset_type);
/* make sure we are ready to rebuild */ if (ice_check_reset(&pf->hw)) {
set_bit(ICE_RESET_FAILED, pf->state);
} else { /* done with reset. start rebuild */
pf->hw.reset_ongoing = false;
ice_rebuild(pf, reset_type); /* clear bit to resume normal operations, but * ICE_NEEDS_RESTART bit is set in case rebuild failed
*/
clear_bit(ICE_RESET_OICR_RECV, pf->state);
clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(ICE_PFR_REQ, pf->state);
clear_bit(ICE_CORER_REQ, pf->state);
clear_bit(ICE_GLOBR_REQ, pf->state);
wake_up(&pf->reset_wait_queue);
ice_reset_all_vfs(pf);
}
return;
}
/* No pending resets to finish processing. Check for new resets */ if (test_bit(ICE_PFR_REQ, pf->state)) {
reset_type = ICE_RESET_PFR; if (pf->lag && pf->lag->bonded) {
dev_dbg(ice_pf_to_dev(pf), "PFR on a bonded interface, promoting to CORER\n");
reset_type = ICE_RESET_CORER;
}
} if (test_bit(ICE_CORER_REQ, pf->state))
reset_type = ICE_RESET_CORER; if (test_bit(ICE_GLOBR_REQ, pf->state))
reset_type = ICE_RESET_GLOBR; /* If no valid reset type requested just return */ if (reset_type == ICE_RESET_INVAL) return;
/* reset if not already down or busy */ if (!test_bit(ICE_DOWN, pf->state) &&
!test_bit(ICE_CFG_BUSY, pf->state)) {
ice_do_reset(pf, reset_type);
}
}
/** * ice_print_topo_conflict - print topology conflict message * @vsi: the VSI whose topology status is being checked
*/ staticvoid ice_print_topo_conflict(struct ice_vsi *vsi)
{ switch (vsi->port_info->phy.link_info.topo_media_conflict) { case ICE_AQ_LINK_TOPO_CONFLICT: case ICE_AQ_LINK_MEDIA_CONFLICT: case ICE_AQ_LINK_TOPO_UNREACH_PRT: case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT: case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
netdev_info(vsi->netdev, "Potential misconfiguration of the Ethernet port detected. If it was not intended, please use the Intel (R) Ethernet Port Configuration Tool to address the issue.\n"); break; case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA: if (test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, vsi->back->flags))
netdev_warn(vsi->netdev, "An unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules\n"); else
netdev_err(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n"); break; default: break;
}
}
/** * ice_print_link_msg - print link up or down message * @vsi: the VSI whose link status is being queried * @isup: boolean for if the link is now up or down
*/ void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{ struct ice_aqc_get_phy_caps_data *caps; constchar *an_advertised; constchar *fec_req; constchar *speed; constchar *fec; constchar *fc; constchar *an; int status;
if (!vsi) return;
if (vsi->current_isup == isup) return;
vsi->current_isup = isup;
if (!isup) {
netdev_info(vsi->netdev, "NIC Link is Down\n"); return;
}
switch (vsi->port_info->phy.link_info.link_speed) { case ICE_AQ_LINK_SPEED_200GB:
speed = "200 G"; break; case ICE_AQ_LINK_SPEED_100GB:
speed = "100 G"; break; case ICE_AQ_LINK_SPEED_50GB:
speed = "50 G"; break; case ICE_AQ_LINK_SPEED_40GB:
speed = "40 G"; break; case ICE_AQ_LINK_SPEED_25GB:
speed = "25 G"; break; case ICE_AQ_LINK_SPEED_20GB:
speed = "20 G"; break; case ICE_AQ_LINK_SPEED_10GB:
speed = "10 G"; break; case ICE_AQ_LINK_SPEED_5GB:
speed = "5 G"; break; case ICE_AQ_LINK_SPEED_2500MB:
speed = "2.5 G"; break; case ICE_AQ_LINK_SPEED_1000MB:
speed = "1 G"; break; case ICE_AQ_LINK_SPEED_100MB:
speed = "100 M"; break; default:
speed = "Unknown "; break;
}
switch (vsi->port_info->fc.current_mode) { case ICE_FC_FULL:
fc = "Rx/Tx"; break; case ICE_FC_TX_PAUSE:
fc = "Tx"; break; case ICE_FC_RX_PAUSE:
fc = "Rx"; break; case ICE_FC_NONE:
fc = "None"; break; default:
fc = "Unknown"; break;
}
/* Get FEC mode based on negotiated link info */ switch (vsi->port_info->phy.link_info.fec_info) { case ICE_AQ_LINK_25G_RS_528_FEC_EN: case ICE_AQ_LINK_25G_RS_544_FEC_EN:
fec = "RS-FEC"; break; case ICE_AQ_LINK_25G_KR_FEC_EN:
fec = "FC-FEC/BASE-R"; break; default:
fec = "NONE"; break;
}
/* check if autoneg completed, might be false due to not supported */ if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
an = "True"; else
an = "False";
/* Get FEC mode requested based on PHY caps last SW configuration */
caps = kzalloc(sizeof(*caps), GFP_KERNEL); if (!caps) {
fec_req = "Unknown";
an_advertised = "Unknown"; goto done;
}
status = ice_aq_get_phy_caps(vsi->port_info, false,
ICE_AQC_REPORT_ACTIVE_CFG, caps, NULL); if (status)
netdev_info(vsi->netdev, "Get phy capability failed.\n");
done:
netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
speed, fec_req, fec, an_advertised, an, fc);
ice_print_topo_conflict(vsi);
}
/** * ice_vsi_link_event - update the VSI's netdev * @vsi: the VSI on which the link event occurred * @link_up: whether or not the VSI needs to be set up or down
*/ staticvoid ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{ if (!vsi) return;
if (test_bit(ICE_VSI_DOWN, vsi->state) || !vsi->netdev) return;
if (vsi->type == ICE_VSI_PF) { if (link_up == netif_carrier_ok(vsi->netdev)) return;
/** * ice_set_dflt_mib - send a default config MIB to the FW * @pf: private PF struct * * This function sends a default configuration MIB to the FW. * * If this function errors out at any point, the driver is still able to * function. The main impact is that LFC may not operate as expected. * Therefore an error state in this function should be treated with a DBG * message and continue on with driver rebuild/reenable.
*/ staticvoid ice_set_dflt_mib(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf);
u8 mib_type, *buf, *lldpmib = NULL;
u16 len, typelen, offset = 0; struct ice_lldp_org_tlv *tlv; struct ice_hw *hw = &pf->hw;
u32 ouisubtype;
mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL); if (!lldpmib) {
dev_dbg(dev, "%s Failed to allocate MIB memory\n",
__func__); return;
}
/* First octet of buf is reserved * Octets 1 - 4 map UP to TC - all UPs map to zero * Octets 5 - 12 are BW values - set TC 0 to 100%. * Octets 13 - 20 are TSA value - leave as zeros
*/
buf[5] = 0x64;
offset += len + 2;
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
/* Octet 1 left as all zeros - PFC disabled */
buf[0] = 0x08;
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
offset += len + 2;
if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);
kfree(lldpmib);
}
/** * ice_check_phy_fw_load - check if PHY FW load failed * @pf: pointer to PF struct * @link_cfg_err: bitmap from the link info structure * * check if external PHY FW load failed and print an error message if it did
*/ staticvoid ice_check_phy_fw_load(struct ice_pf *pf, u8 link_cfg_err)
{ if (!(link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE)) {
clear_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags); return;
}
if (test_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags)) return;
if (link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE) {
dev_err(ice_pf_to_dev(pf), "Device failed to load the FW for the external PHY. Please download and install the latest NVM for your device and try again\n");
set_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags);
}
}
/** * ice_check_module_power * @pf: pointer to PF struct * @link_cfg_err: bitmap from the link info structure * * check module power level returned by a previous call to aq_get_link_info * and print error messages if module power level is not supported
*/ staticvoid ice_check_module_power(struct ice_pf *pf, u8 link_cfg_err)
{ /* if module power level is supported, clear the flag */ if (!(link_cfg_err & (ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT |
ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED))) {
clear_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags); return;
}
/* if ICE_FLAG_MOD_POWER_UNSUPPORTED was previously set and the * above block didn't clear this bit, there's nothing to do
*/ if (test_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags)) return;
if (link_cfg_err & ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT) {
dev_err(ice_pf_to_dev(pf), "The installed module is incompatible with the device's NVM image. Cannot start link\n");
set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
} elseif (link_cfg_err & ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED) {
dev_err(ice_pf_to_dev(pf), "The module's power requirements exceed the device's power supply. Cannot start link\n");
set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
}
}
/** * ice_check_link_cfg_err - check if link configuration failed * @pf: pointer to the PF struct * @link_cfg_err: bitmap from the link info structure * * print if any link configuration failure happens due to the value in the * link_cfg_err parameter in the link info structure
*/ staticvoid ice_check_link_cfg_err(struct ice_pf *pf, u8 link_cfg_err)
{
ice_check_module_power(pf, link_cfg_err);
ice_check_phy_fw_load(pf, link_cfg_err);
}
/** * ice_link_event - process the link event * @pf: PF that the link event is associated with * @pi: port_info for the port that the link event is associated with * @link_up: true if the physical link is up and false if it is down * @link_speed: current link speed received from the link event * * Returns 0 on success and negative on failure
*/ staticint
ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up,
u16 link_speed)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_phy_info *phy_info; struct ice_vsi *vsi;
u16 old_link_speed; bool old_link; int status;
/* update the link info structures and re-enable link events, * don't bail on failure due to other book keeping needed
*/
status = ice_update_link_info(pi); if (status)
dev_dbg(dev, "Failed to update link status on port %d, err %d aq_err %s\n",
pi->lport, status,
libie_aq_str(pi->hw->adminq.sq_last_status));
/* Check if the link state is up after updating link info, and treat * this event as an UP event since the link is actually UP now.
*/ if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
link_up = true;
vsi = ice_get_main_vsi(pf); if (!vsi || !vsi->port_info) return -EINVAL;
/* turn off PHY if media was removed */ if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
!(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
ice_set_link(vsi, false);
}
/* if the old link up/down and speed is the same as the new */ if (link_up == old_link && link_speed == old_link_speed) return 0;
if (!link_up && old_link)
pf->link_down_events++;
ice_ptp_link_change(pf, link_up);
if (ice_is_dcb_active(pf)) { if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
ice_dcb_rebuild(pf);
} else { if (link_up)
ice_set_dflt_mib(pf);
}
ice_vsi_link_event(vsi, link_up);
ice_print_link_msg(vsi, link_up);
ice_vc_notify_link_state(pf);
return 0;
}
/** * ice_watchdog_subtask - periodic tasks not using event driven scheduling * @pf: board private structure
*/ staticvoid ice_watchdog_subtask(struct ice_pf *pf)
{ int i;
/* if interface is down do nothing */ if (test_bit(ICE_DOWN, pf->state) ||
test_bit(ICE_CFG_BUSY, pf->state)) return;
/* make sure we don't do these things too often */ if (time_before(jiffies,
pf->serv_tmr_prev + pf->serv_tmr_period)) return;
pf->serv_tmr_prev = jiffies;
/* Update the stats for active netdevs so the network stack * can look at updated numbers whenever it cares to
*/
ice_update_pf_stats(pf);
ice_for_each_vsi(pf, i) if (pf->vsi[i] && pf->vsi[i]->netdev)
ice_update_vsi_stats(pf->vsi[i]);
}
/** * ice_init_link_events - enable/initialize link events * @pi: pointer to the port_info instance * * Returns -EIO on failure, 0 on success
*/ staticint ice_init_link_events(struct ice_port_info *pi)
{
u16 mask;
if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n",
pi->lport); return -EIO;
}
if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n",
pi->lport); return -EIO;
}
return 0;
}
/** * ice_handle_link_event - handle link event via ARQ * @pf: PF that the link event is associated with * @event: event structure containing link status info
*/ staticint
ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{ struct ice_aqc_get_link_status_data *link_data; struct ice_port_info *port_info; int status;
status = ice_link_event(pf, port_info,
!!(link_data->link_info & ICE_AQ_LINK_UP),
le16_to_cpu(link_data->link_speed)); if (status)
dev_dbg(ice_pf_to_dev(pf), "Could not process link event, error %d\n",
status);
return status;
}
/** * ice_get_fwlog_data - copy the FW log data from ARQ event * @pf: PF that the FW log event is associated with * @event: event structure containing FW log data
*/ staticvoid
ice_get_fwlog_data(struct ice_pf *pf, struct ice_rq_event_info *event)
{ struct ice_fwlog_data *fwlog; struct ice_hw *hw = &pf->hw;
if (ice_fwlog_ring_full(&hw->fwlog_ring)) { /* the rings are full so bump the head to create room */
ice_fwlog_ring_increment(&hw->fwlog_ring.head,
hw->fwlog_ring.size);
}
}
/** * ice_aq_prep_for_event - Prepare to wait for an AdminQ event from firmware * @pf: pointer to the PF private structure * @task: intermediate helper storage and identifier for waiting * @opcode: the opcode to wait for * * Prepares to wait for a specific AdminQ completion event on the ARQ for * a given PF. Actual wait would be done by a call to ice_aq_wait_for_event(). * * Calls are separated to allow caller registering for event before sending * the command, which mitigates a race between registering and FW responding. * * To obtain only the descriptor contents, pass an task->event with null * msg_buf. If the complete data buffer is desired, allocate the * task->event.msg_buf with enough space ahead of time.
*/ void ice_aq_prep_for_event(struct ice_pf *pf, struct ice_aq_task *task,
u16 opcode)
{
INIT_HLIST_NODE(&task->entry);
task->opcode = opcode;
task->state = ICE_AQ_TASK_WAITING;
/** * ice_aq_wait_for_event - Wait for an AdminQ event from firmware * @pf: pointer to the PF private structure * @task: ptr prepared by ice_aq_prep_for_event() * @timeout: how long to wait, in jiffies * * Waits for a specific AdminQ completion event on the ARQ for a given PF. The * current thread will be put to sleep until the specified event occurs or * until the given timeout is reached. * * Returns: zero on success, or a negative error code on failure.
*/ int ice_aq_wait_for_event(struct ice_pf *pf, struct ice_aq_task *task, unsignedlong timeout)
{ enum ice_aq_task_state *state = &task->state; struct device *dev = ice_pf_to_dev(pf); unsignedlong start = jiffies; long ret; int err;
ret = wait_event_interruptible_timeout(pf->aq_wait_queue,
*state != ICE_AQ_TASK_WAITING,
timeout); switch (*state) { case ICE_AQ_TASK_NOT_PREPARED:
WARN(1, "call to %s without ice_aq_prep_for_event()", __func__);
err = -EINVAL; break; case ICE_AQ_TASK_WAITING:
err = ret < 0 ? ret : -ETIMEDOUT; break; case ICE_AQ_TASK_CANCELED:
err = ret < 0 ? ret : -ECANCELED; break; case ICE_AQ_TASK_COMPLETE:
err = ret < 0 ? ret : 0; break; default:
WARN(1, "Unexpected AdminQ wait task state %u", *state);
err = -EINVAL; break;
}
dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
jiffies_to_msecs(jiffies - start),
jiffies_to_msecs(timeout),
task->opcode);
/** * ice_aq_check_events - Check if any thread is waiting for an AdminQ event * @pf: pointer to the PF private structure * @opcode: the opcode of the event * @event: the event to check * * Loops over the current list of pending threads waiting for an AdminQ event. * For each matching task, copy the contents of the event into the task * structure and wake up the thread. * * If multiple threads wait for the same opcode, they will all be woken up. * * Note that event->msg_buf will only be duplicated if the event has a buffer * with enough space already allocated. Otherwise, only the descriptor and * message length will be copied. * * Returns: true if an event was found, false otherwise
*/ staticvoid ice_aq_check_events(struct ice_pf *pf, u16 opcode, struct ice_rq_event_info *event)
{ struct ice_rq_event_info *task_ev; struct ice_aq_task *task; bool found = false;
spin_lock_bh(&pf->aq_wait_lock);
hlist_for_each_entry(task, &pf->aq_wait_list, entry) { if (task->state != ICE_AQ_TASK_WAITING) continue; if (task->opcode != opcode) continue;
/* Only copy the data buffer if a destination was set */ if (task_ev->msg_buf && task_ev->buf_len >= event->buf_len) {
memcpy(task_ev->msg_buf, event->msg_buf,
event->buf_len);
task_ev->buf_len = event->buf_len;
}
task->state = ICE_AQ_TASK_COMPLETE;
found = true;
}
spin_unlock_bh(&pf->aq_wait_lock);
if (found)
wake_up(&pf->aq_wait_queue);
}
/** * ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks * @pf: the PF private structure * * Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads. * This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
*/ staticvoid ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{ struct ice_aq_task *task;
/** * __ice_clean_ctrlq - helper function to clean controlq rings * @pf: ptr to struct ice_pf * @q_type: specific Control queue type
*/ staticint __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_rq_event_info event; struct ice_hw *hw = &pf->hw; struct ice_ctl_q_info *cq;
u16 pending, i = 0; constchar *qtype;
u32 oldval, val;
/* Do not clean control queue if/when PF reset fails */ if (test_bit(ICE_RESET_FAILED, pf->state)) return 0;
switch (q_type) { case ICE_CTL_Q_ADMIN:
cq = &hw->adminq;
qtype = "Admin"; break; case ICE_CTL_Q_SB:
cq = &hw->sbq;
qtype = "Sideband"; break; case ICE_CTL_Q_MAILBOX:
cq = &hw->mailboxq;
qtype = "Mailbox"; /* we are going to try to detect a malicious VF, so set the * state to begin detection
*/
hw->mbx_snapshot.mbx_buf.state = ICE_MAL_VF_DETECT_STATE_NEW_SNAPSHOT; break; default:
dev_warn(dev, "Unknown control queue type 0x%x\n", q_type); return 0;
}
/* check for error indications - PF_xx_AxQLEN register layout for * FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
*/
val = rd32(hw, cq->rq.len); if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M)) {
oldval = val; if (val & PF_FW_ARQLEN_ARQVFE_M)
dev_dbg(dev, "%s Receive Queue VF Error detected\n",
qtype); if (val & PF_FW_ARQLEN_ARQOVFL_M) {
dev_dbg(dev, "%s Receive Queue Overflow Error detected\n",
qtype);
} if (val & PF_FW_ARQLEN_ARQCRIT_M)
dev_dbg(dev, "%s Receive Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M); if (oldval != val)
wr32(hw, cq->rq.len, val);
}
val = rd32(hw, cq->sq.len); if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M)) {
oldval = val; if (val & PF_FW_ATQLEN_ATQVFE_M)
dev_dbg(dev, "%s Send Queue VF Error detected\n",
qtype); if (val & PF_FW_ATQLEN_ATQOVFL_M) {
dev_dbg(dev, "%s Send Queue Overflow Error detected\n",
qtype);
} if (val & PF_FW_ATQLEN_ATQCRIT_M)
dev_dbg(dev, "%s Send Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M); if (oldval != val)
wr32(hw, cq->sq.len, val);
}
do { struct ice_mbx_data data = {};
u16 opcode; int ret;
ret = ice_clean_rq_elem(hw, cq, &event, &pending); if (ret == -EALREADY) break; if (ret) {
dev_err(dev, "%s Receive Queue event error %d\n", qtype,
ret); break;
}
opcode = le16_to_cpu(event.desc.opcode);
/* Notify any thread that might be waiting for this event */
ice_aq_check_events(pf, opcode, &event);
switch (opcode) { case ice_aqc_opc_get_link_status: if (ice_handle_link_event(pf, &event))
dev_err(dev, "Could not handle link event\n"); break; case ice_aqc_opc_event_lan_overflow:
ice_vf_lan_overflow_event(pf, &event); break; case ice_mbx_opc_send_msg_to_pf: if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT)) {
ice_vc_process_vf_msg(pf, &event, NULL);
ice_mbx_vf_dec_trig_e830(hw, &event);
} else {
u16 val = hw->mailboxq.num_rq_entries;
ice_vc_process_vf_msg(pf, &event, &data);
} break; case ice_aqc_opc_fw_logs_event:
ice_get_fwlog_data(pf, &event); break; case ice_aqc_opc_lldp_set_mib_change:
ice_dcb_process_lldp_set_mib_change(pf, &event); break; case ice_aqc_opc_get_health_status:
ice_process_health_status_event(pf, &event); break; default:
dev_dbg(dev, "%s Receive Queue unknown event 0x%04x ignored\n",
qtype, opcode); break;
}
} while (pending && (i++ < ICE_DFLT_IRQ_WORK));
kfree(event.msg_buf);
return pending && (i == ICE_DFLT_IRQ_WORK);
}
/** * ice_ctrlq_pending - check if there is a difference between ntc and ntu * @hw: pointer to hardware info * @cq: control queue information * * returns true if there are pending messages in a queue, false if there aren't
*/ staticbool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
u16 ntu;
if (!test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state)) return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN)) return;
clear_bit(ICE_ADMINQ_EVENT_PENDING, pf->state);
/* There might be a situation where new messages arrive to a control * queue between processing the last message and clearing the * EVENT_PENDING bit. So before exiting, check queue head again (using * ice_ctrlq_pending) and process new messages if any.
*/ if (ice_ctrlq_pending(hw, &hw->adminq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);
/* if mac_type is not generic, sideband is not supported * and there's nothing to do here
*/ if (!ice_is_generic_mac(hw)) {
clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state); return;
}
if (!test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state)) return;
if (ice_ctrlq_pending(hw, &hw->sbq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_SB);
ice_flush(hw);
}
/** * ice_service_task_schedule - schedule the service task to wake up * @pf: board private structure * * If not already scheduled, this puts the task into the work queue.
*/ void ice_service_task_schedule(struct ice_pf *pf)
{ if (!test_bit(ICE_SERVICE_DIS, pf->state) &&
!test_and_set_bit(ICE_SERVICE_SCHED, pf->state) &&
!test_bit(ICE_NEEDS_RESTART, pf->state))
queue_work(ice_wq, &pf->serv_task);
}
/** * ice_service_task_complete - finish up the service task * @pf: board private structure
*/ staticvoid ice_service_task_complete(struct ice_pf *pf)
{
WARN_ON(!test_bit(ICE_SERVICE_SCHED, pf->state));
/* force memory (pf->state) to sync before next service task */
smp_mb__before_atomic();
clear_bit(ICE_SERVICE_SCHED, pf->state);
}
/** * ice_service_task_stop - stop service task and cancel works * @pf: board private structure * * Return 0 if the ICE_SERVICE_DIS bit was not already set, * 1 otherwise.
*/ staticint ice_service_task_stop(struct ice_pf *pf)
{ int ret;
ret = test_and_set_bit(ICE_SERVICE_DIS, pf->state);
if (pf->serv_tmr.function)
timer_delete_sync(&pf->serv_tmr); if (pf->serv_task.func)
cancel_work_sync(&pf->serv_task);
/** * ice_service_task_restart - restart service task and schedule works * @pf: board private structure * * This function is needed for suspend and resume works (e.g WoL scenario)
*/ staticvoid ice_service_task_restart(struct ice_pf *pf)
{
clear_bit(ICE_SERVICE_DIS, pf->state);
ice_service_task_schedule(pf);
}
/** * ice_service_timer - timer callback to schedule service task * @t: pointer to timer_list
*/ staticvoid ice_service_timer(struct timer_list *t)
{ struct ice_pf *pf = timer_container_of(pf, t, serv_tmr);
/** * ice_mdd_maybe_reset_vf - reset VF after MDD event * @pf: pointer to the PF structure * @vf: pointer to the VF structure * @reset_vf_tx: whether Tx MDD has occurred * @reset_vf_rx: whether Rx MDD has occurred * * Since the queue can get stuck on VF MDD events, the PF can be configured to * automatically reset the VF by enabling the private ethtool flag * mdd-auto-reset-vf.
*/ staticvoid ice_mdd_maybe_reset_vf(struct ice_pf *pf, struct ice_vf *vf, bool reset_vf_tx, bool reset_vf_rx)
{ struct device *dev = ice_pf_to_dev(pf);
if (!test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) return;
/* VF MDD event counters will be cleared by reset, so print the event * prior to reset.
*/ if (reset_vf_tx)
ice_print_vf_tx_mdd_event(vf);
if (reset_vf_rx)
ice_print_vf_rx_mdd_event(vf);
dev_info(dev, "PF-to-VF reset on PF %d VF %d due to MDD event\n",
pf->hw.pf_id, vf->vf_id);
ice_reset_vf(vf, ICE_VF_RESET_NOTIFY | ICE_VF_RESET_LOCK);
}
/** * ice_handle_mdd_event - handle malicious driver detect event * @pf: pointer to the PF structure * * Called from service task. OICR interrupt handler indicates MDD event. * VF MDD logging is guarded by net_ratelimit. Additional PF and VF log * messages are wrapped by netif_msg_[rx|tx]_err. Since VF Rx MDD events * disable the queue, the PF can be configured to reset the VF using ethtool * private flag mdd-auto-reset-vf.
*/ staticvoid ice_handle_mdd_event(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw; struct ice_vf *vf; unsignedint bkt;
u32 reg;
if (!test_and_clear_bit(ICE_MDD_EVENT_PENDING, pf->state)) { /* Since the VF MDD event logging is rate limited, check if * there are pending MDD events.
*/
ice_print_vfs_mdd_events(pf); return;
}
/* check to see if this PF caused an MDD event */
reg = rd32(hw, PF_MDET_TX_PQM); if (reg & PF_MDET_TX_PQM_VALID_M) {
wr32(hw, PF_MDET_TX_PQM, 0xFFFF); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on PF\n");
}
reg = rd32(hw, PF_MDET_TX_TCLAN_BY_MAC(hw)); if (reg & PF_MDET_TX_TCLAN_VALID_M) {
wr32(hw, PF_MDET_TX_TCLAN_BY_MAC(hw), 0xffff); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on PF\n");
}
reg = rd32(hw, PF_MDET_RX); if (reg & PF_MDET_RX_VALID_M) {
wr32(hw, PF_MDET_RX, 0xFFFF); if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on PF\n");
}
/* Check to see if one of the VFs caused an MDD event, and then * increment counters and set print pending
*/
mutex_lock(&pf->vfs.table_lock);
ice_for_each_vf(pf, bkt, vf) { bool reset_vf_tx = false, reset_vf_rx = false;
reg = rd32(hw, VP_MDET_TX_PQM(vf->vf_id)); if (reg & VP_MDET_TX_PQM_VALID_M) {
wr32(hw, VP_MDET_TX_PQM(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_TX_TCLAN(vf->vf_id)); if (reg & VP_MDET_TX_TCLAN_VALID_M) {
wr32(hw, VP_MDET_TX_TCLAN(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_TX_TDPU(vf->vf_id)); if (reg & VP_MDET_TX_TDPU_VALID_M) {
wr32(hw, VP_MDET_TX_TDPU(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_RX(vf->vf_id)); if (reg & VP_MDET_RX_VALID_M) {
wr32(hw, VP_MDET_RX(vf->vf_id), 0xFFFF);
vf->mdd_rx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on VF %d\n",
vf->vf_id);
reset_vf_rx = true;
}
if (reset_vf_tx || reset_vf_rx)
ice_mdd_maybe_reset_vf(pf, vf, reset_vf_tx,
reset_vf_rx);
}
mutex_unlock(&pf->vfs.table_lock);
ice_print_vfs_mdd_events(pf);
}
/** * ice_force_phys_link_state - Force the physical link state * @vsi: VSI to force the physical link state to up/down * @link_up: true/false indicates to set the physical link to up/down * * Force the physical link state by getting the current PHY capabilities from * hardware and setting the PHY config based on the determined capabilities. If * link changes a link event will be triggered because both the Enable Automatic * Link Update and LESM Enable bits are set when setting the PHY capabilities. * * Returns 0 on success, negative on failure
*/ staticint ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_port_info *pi; struct device *dev; int retcode;
if (!vsi || !vsi->port_info || !vsi->back) return -EINVAL; if (vsi->type != ICE_VSI_PF) return 0;
dev = ice_pf_to_dev(vsi->back);
pi = vsi->port_info;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL); if (retcode) {
dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO; goto out;
}
/* No change in link */ if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP)) goto out;
/* Use the current user PHY configuration. The current user PHY * configuration is initialized during probe from PHY capabilities * software mode, and updated on set PHY configuration.
*/
cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL); if (!cfg) {
retcode = -ENOMEM; goto out;
}
retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL); if (retcode) {
dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
}
kfree(cfg);
out:
kfree(pcaps); return retcode;
}
/** * ice_init_nvm_phy_type - Initialize the NVM PHY type * @pi: port info structure * * Initialize nvm_phy_type_[low|high] for link lenient mode support
*/ staticint ice_init_nvm_phy_type(struct ice_port_info *pi)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_pf *pf = pi->hw->back; int err;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/** * ice_init_link_dflt_override - Initialize link default override * @pi: port info structure * * Initialize link default override and PHY total port shutdown during probe
*/ staticvoid ice_init_link_dflt_override(struct ice_port_info *pi)
{ struct ice_link_default_override_tlv *ldo; struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override; if (ice_get_link_default_override(ldo, pi)) return;
if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS)) return;
/* Enable Total Port Shutdown (override/replace link-down-on-close * ethtool private flag) for ports with Port Disable bit set.
*/
set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
}
/** * ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings * @pi: port info structure * * If default override is enabled, initialize the user PHY cfg speed and FEC * settings using the default override mask from the NVM. * * The PHY should only be configured with the default override settings the * first time media is available. The ICE_LINK_DEFAULT_OVERRIDE_PENDING state * is used to indicate that the user PHY cfg default override is initialized * and the PHY has not been configured with the default override settings. The * state is set here, and cleared in ice_configure_phy the first time the PHY is * configured. * * This function should be called only if the FW doesn't support default * configuration mode, as reported by ice_fw_supports_report_dflt_cfg.
*/ staticvoid ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
{ struct ice_link_default_override_tlv *ldo; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override;
/* If link default override is enabled, use to mask NVM PHY capabilities * for speed and FEC default configuration.
*/
cfg = &phy->curr_user_phy_cfg;
/** * ice_init_phy_user_cfg - Initialize the PHY user configuration * @pi: port info structure * * Initialize the current user PHY configuration, speed, FEC, and FC requested * mode to default. The PHY defaults are from get PHY capabilities topology * with media so call when media is first available. An error is returned if * called when media is not available. The PHY initialization completed state is * set here. * * These configurations are used when setting PHY * configuration. The user PHY configuration is updated on set PHY * configuration. Returns 0 on success, negative on failure
*/ staticint ice_init_phy_user_cfg(struct ice_port_info *pi)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = pi->hw->back; int err;
if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) return -EIO;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/* check if lenient mode is supported and enabled */ if (ice_fw_supports_link_override(pi->hw) &&
!(pcaps->module_compliance_enforcement &
ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);
/* if the FW supports default PHY configuration mode, then the driver * does not have to apply link override settings. If not, * initialize user PHY configuration with link override values
*/ if (!ice_fw_supports_report_dflt_cfg(pi->hw) &&
(pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN)) {
ice_init_phy_cfg_dflt_override(pi); goto out;
}
}
/* if link default override is not enabled, set user flow control and * FEC settings based on what get_phy_caps returned
*/
phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
pcaps->link_fec_options);
phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);
/** * ice_configure_phy - configure PHY * @vsi: VSI of PHY * * Set the PHY configuration. If the current PHY configuration is the same as * the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise * configure the based get PHY capabilities for topology with media.
*/ staticint ice_configure_phy(struct ice_vsi *vsi)
{ struct device *dev = ice_pf_to_dev(vsi->back); struct ice_port_info *pi = vsi->port_info; struct ice_aqc_get_phy_caps_data *pcaps; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = vsi->back; int err;
/* Ensure we have media as we cannot configure a medialess port */ if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) return -ENOMEDIUM;
ice_print_topo_conflict(vsi);
if (!test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags) &&
phy->link_info.topo_media_conflict == ICE_AQ_LINK_TOPO_UNSUPP_MEDIA) return -EPERM;
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) return ice_force_phys_link_state(vsi, true);
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/* Get current PHY config */
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL); if (err) {
dev_err(dev, "Failed to get PHY configuration, VSI %d error %d\n",
vsi->vsi_num, err); goto done;
}
/* If PHY enable link is configured and configuration has not changed, * there's nothing to do
*/ if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
ice_phy_caps_equals_cfg(pcaps, &phy->curr_user_phy_cfg)) goto done;
/* Use PHY topology as baseline for configuration */
memset(pcaps, 0, sizeof(*pcaps)); if (ice_fw_supports_report_dflt_cfg(pi->hw))
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
pcaps, NULL); else
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
pcaps, NULL); if (err) {
dev_err(dev, "Failed to get PHY caps, VSI %d error %d\n",
vsi->vsi_num, err); goto done;
}
/* Can't provide what was requested; use PHY capabilities */ if (!cfg->phy_type_low && !cfg->phy_type_high) {
cfg->phy_type_low = pcaps->phy_type_low;
cfg->phy_type_high = pcaps->phy_type_high;
}
/* Can't provide what was requested; use PHY capabilities */ if (cfg->link_fec_opt !=
(cfg->link_fec_opt & pcaps->link_fec_options)) {
cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
cfg->link_fec_opt = pcaps->link_fec_options;
}
/* Flow Control - always supported; no need to check against * capabilities
*/
ice_cfg_phy_fc(pi, cfg, phy->curr_user_fc_req);
/* Enable link and link update */
cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;
err = ice_aq_set_phy_cfg(&pf->hw, pi, cfg, NULL); if (err)
dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
vsi->vsi_num, err);
kfree(cfg);
done:
kfree(pcaps); return err;
}
/** * ice_check_media_subtask - Check for media * @pf: pointer to PF struct * * If media is available, then initialize PHY user configuration if it is not * been, and configure the PHY if the interface is up.
*/ staticvoid ice_check_media_subtask(struct ice_pf *pf)
{ struct ice_port_info *pi; struct ice_vsi *vsi; int err;
/* No need to check for media if it's already present */ if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags)) return;
vsi = ice_get_main_vsi(pf); if (!vsi) return;
/* Refresh link info and check if media is present */
pi = vsi->port_info;
err = ice_update_link_info(pi); if (err) return;
if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) { if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state))
ice_init_phy_user_cfg(pi);
/* PHY settings are reset on media insertion, reconfigure * PHY to preserve settings.
*/ if (test_bit(ICE_VSI_DOWN, vsi->state) &&
test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) return;
err = ice_configure_phy(vsi); if (!err)
clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
/* A Link Status Event will be generated; the event handler * will complete bringing the interface up
*/
}
}
/** * ice_service_task - manage and run subtasks * @work: pointer to work_struct contained by the PF struct
*/ staticvoid ice_service_task(struct work_struct *work)
{ struct ice_pf *pf = container_of(work, struct ice_pf, serv_task); unsignedlong start_time = jiffies;
if (pf->health_reporters.tx_hang_buf.tx_ring) {
ice_report_tx_hang(pf);
pf->health_reporters.tx_hang_buf.tx_ring = NULL;
}
ice_reset_subtask(pf);
/* bail if a reset/recovery cycle is pending or rebuild failed */ if (ice_is_reset_in_progress(pf->state) ||
test_bit(ICE_SUSPENDED, pf->state) ||
test_bit(ICE_NEEDS_RESTART, pf->state)) {
ice_service_task_complete(pf); return;
}
if (test_and_clear_bit(ICE_AUX_ERR_PENDING, pf->state)) { struct iidc_rdma_event *event;
event = kzalloc(sizeof(*event), GFP_KERNEL); if (event) {
set_bit(IIDC_RDMA_EVENT_CRIT_ERR, event->type); /* report the entire OICR value to AUX driver */
swap(event->reg, pf->oicr_err_reg);
ice_send_event_to_aux(pf, event);
kfree(event);
}
}
/* unplug aux dev per request, if an unplug request came in * while processing a plug request, this will handle it
*/ if (test_and_clear_bit(ICE_FLAG_UNPLUG_AUX_DEV, pf->flags))
ice_unplug_aux_dev(pf);
/* Plug aux device per request */ if (test_and_clear_bit(ICE_FLAG_PLUG_AUX_DEV, pf->flags))
ice_plug_aux_dev(pf);
if (test_and_clear_bit(ICE_FLAG_MTU_CHANGED, pf->flags)) { struct iidc_rdma_event *event;
/* Clear ICE_SERVICE_SCHED flag to allow scheduling next event */
ice_service_task_complete(pf);
/* If the tasks have taken longer than one service timer period * or there is more work to be done, reset the service timer to * schedule the service task now.
*/ if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
test_bit(ICE_MDD_EVENT_PENDING, pf->state) ||
test_bit(ICE_VFLR_EVENT_PENDING, pf->state) ||
test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
test_bit(ICE_FD_VF_FLUSH_CTX, pf->state) ||
test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state) ||
test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state))
mod_timer(&pf->serv_tmr, jiffies);
}
/* bail out if earlier reset has failed */ if (test_bit(ICE_RESET_FAILED, pf->state)) {
dev_dbg(dev, "earlier reset has failed\n"); return -EIO;
} /* bail if reset/recovery already in progress */ if (ice_is_reset_in_progress(pf->state)) {
dev_dbg(dev, "Reset already in progress\n"); return -EBUSY;
}
switch (reset) { case ICE_RESET_PFR:
set_bit(ICE_PFR_REQ, pf->state); break; case ICE_RESET_CORER:
set_bit(ICE_CORER_REQ, pf->state); break; case ICE_RESET_GLOBR:
set_bit(ICE_GLOBR_REQ, pf->state); break; default: return -EINVAL;
}
ice_service_task_schedule(pf); return 0;
}
/** * ice_vsi_ena_irq - Enable IRQ for the given VSI * @vsi: the VSI being configured
*/ staticint ice_vsi_ena_irq(struct ice_vsi *vsi)
{ struct ice_hw *hw = &vsi->back->hw; int i;
/** * ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI * @vsi: the VSI being configured * @basename: name for the vector
*/ staticint ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
{ int q_vectors = vsi->num_q_vectors; struct ice_pf *pf = vsi->back; struct device *dev; int rx_int_idx = 0; int tx_int_idx = 0; int vector, err; int irq_num;
dev = ice_pf_to_dev(pf); for (vector = 0; vector < q_vectors; vector++) { struct ice_q_vector *q_vector = vsi->q_vectors[vector];
err = ice_set_cpu_rx_rmap(vsi); if (err) {
netdev_err(vsi->netdev, "Failed to setup CPU RMAP on VSI %u: %pe\n",
vsi->vsi_num, ERR_PTR(err)); goto free_q_irqs;
}
/** * ice_xdp_alloc_setup_rings - Allocate and setup Tx rings for XDP * @vsi: VSI to setup Tx rings used by XDP * * Return 0 on success and negative value on error
*/ staticint ice_xdp_alloc_setup_rings(struct ice_vsi *vsi)
{ struct device *dev = ice_pf_to_dev(vsi->back); struct ice_tx_desc *tx_desc; int i, j;
free_xdp_rings: for (; i >= 0; i--) { if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc) {
kfree_rcu(vsi->xdp_rings[i]->ring_stats, rcu);
vsi->xdp_rings[i]->ring_stats = NULL;
ice_free_tx_ring(vsi->xdp_rings[i]);
}
} return -ENOMEM;
}
/** * ice_vsi_assign_bpf_prog - set or clear bpf prog pointer on VSI * @vsi: VSI to set the bpf prog on * @prog: the bpf prog pointer
*/ staticvoid ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
{ struct bpf_prog *old_prog; int i;
if (static_key_enabled(&ice_xdp_locking_key)) return vsi->xdp_rings[qid % vsi->num_xdp_txq];
q_vector = vsi->rx_rings[qid]->q_vector;
ice_for_each_tx_ring(ring, q_vector->tx) if (ice_ring_is_xdp(ring)) return ring;
return NULL;
}
/** * ice_map_xdp_rings - Map XDP rings to interrupt vectors * @vsi: the VSI with XDP rings being configured * * Map XDP rings to interrupt vectors and perform the configuration steps * dependent on the mapping.
*/ void ice_map_xdp_rings(struct ice_vsi *vsi)
{ int xdp_rings_rem = vsi->num_xdp_txq; int v_idx, q_idx;
/* follow the logic from ice_vsi_map_rings_to_vectors */
ice_for_each_q_vector(vsi, v_idx) { struct ice_q_vector *q_vector = vsi->q_vectors[v_idx]; int xdp_rings_per_v, q_id, q_base;
/** * ice_unmap_xdp_rings - Unmap XDP rings from interrupt vectors * @vsi: the VSI with XDP rings being unmapped
*/ staticvoid ice_unmap_xdp_rings(struct ice_vsi *vsi)
{ int v_idx;
ice_for_each_tx_ring(ring, q_vector->tx) if (!ring->tx_buf || !ice_ring_is_xdp(ring)) break;
/* restore the value of last node prior to XDP setup */
q_vector->tx.tx_ring = ring;
}
}
/** * ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP * @vsi: VSI to bring up Tx rings used by XDP * @prog: bpf program that will be assigned to VSI * @cfg_type: create from scratch or restore the existing configuration * * Return 0 on success and negative value on error
*/ int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog, enum ice_xdp_cfg cfg_type)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 }; struct ice_pf *pf = vsi->back; struct ice_qs_cfg xdp_qs_cfg = {
.qs_mutex = &pf->avail_q_mutex,
.pf_map = pf->avail_txqs,
.pf_map_size = pf->max_pf_txqs,
.q_count = vsi->num_xdp_txq,
.scatter_count = ICE_MAX_SCATTER_TXQS,
.vsi_map = vsi->txq_map,
.vsi_map_offset = vsi->alloc_txq,
.mapping_mode = ICE_VSI_MAP_CONTIG
}; struct device *dev; int status, i;
dev = ice_pf_to_dev(pf);
vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq, sizeof(*vsi->xdp_rings), GFP_KERNEL); if (!vsi->xdp_rings) return -ENOMEM;
vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode; if (__ice_vsi_get_qs(&xdp_qs_cfg)) goto err_map_xdp;
if (static_key_enabled(&ice_xdp_locking_key))
netdev_warn(vsi->netdev, "Could not allocate one XDP Tx ring per CPU, XDP_TX/XDP_REDIRECT actions will be slower\n");
if (ice_xdp_alloc_setup_rings(vsi)) goto clear_xdp_rings;
/* omit the scheduler update if in reset path; XDP queues will be * taken into account at the end of ice_vsi_rebuild, where * ice_cfg_vsi_lan is being called
*/ if (cfg_type == ICE_XDP_CFG_PART) return 0;
ice_map_xdp_rings(vsi);
/* tell the Tx scheduler that right now we have * additional queues
*/ for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq + vsi->num_xdp_txq;
status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
max_txqs); if (status) {
dev_err(dev, "Failed VSI LAN queue config for XDP, error: %d\n",
status); goto unmap_xdp_rings;
}
/* assign the prog only when it's not already present on VSI; * this flow is a subject of both ethtool -L and ndo_bpf flows; * VSI rebuild that happens under ethtool -L can expose us to * the bpf_prog refcount issues as we would be swapping same * bpf_prog pointers from vsi->xdp_prog and calling bpf_prog_put * on it as it would be treated as an 'old_prog'; for ndo_bpf * this is not harmful as dev_xdp_install bumps the refcount * before calling the op exposed by the driver;
*/ if (!ice_is_xdp_ena_vsi(vsi))
ice_vsi_assign_bpf_prog(vsi, prog);
/** * ice_destroy_xdp_rings - undo the configuration made by ice_prepare_xdp_rings * @vsi: VSI to remove XDP rings * @cfg_type: disable XDP permanently or allow it to be restored later * * Detach XDP rings from irq vectors, clean up the PF bitmap and free * resources
*/ int ice_destroy_xdp_rings(struct ice_vsi *vsi, enum ice_xdp_cfg cfg_type)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 }; struct ice_pf *pf = vsi->back; int i;
/* q_vectors are freed in reset path so there's no point in detaching * rings
*/ if (cfg_type == ICE_XDP_CFG_PART) goto free_qmap;
if (static_key_enabled(&ice_xdp_locking_key))
static_branch_dec(&ice_xdp_locking_key);
if (cfg_type == ICE_XDP_CFG_PART) return 0;
ice_vsi_assign_bpf_prog(vsi, NULL);
/* notify Tx scheduler that we destroyed XDP queues and bring * back the old number of child nodes
*/ for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq;
/* change number of XDP Tx queues to 0 */
vsi->num_xdp_txq = 0;
/** * ice_vsi_rx_napi_schedule - Schedule napi on RX queues from VSI * @vsi: VSI to schedule napi on
*/ staticvoid ice_vsi_rx_napi_schedule(struct ice_vsi *vsi)
{ int i;
if (READ_ONCE(rx_ring->xsk_pool))
napi_schedule(&rx_ring->q_vector->napi);
}
}
/** * ice_vsi_determine_xdp_res - figure out how many Tx qs can XDP have * @vsi: VSI to determine the count of XDP Tx qs * * returns 0 if Tx qs count is higher than at least half of CPU count, * -ENOMEM otherwise
*/ int ice_vsi_determine_xdp_res(struct ice_vsi *vsi)
{
u16 avail = ice_get_avail_txq_count(vsi->back);
u16 cpus = num_possible_cpus();
if (avail < cpus / 2) return -ENOMEM;
if (vsi->type == ICE_VSI_SF)
avail = vsi->alloc_txq;
vsi->num_xdp_txq = min_t(u16, avail, cpus);
if (vsi->num_xdp_txq < cpus)
static_branch_inc(&ice_xdp_locking_key);
return 0;
}
/** * ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP * @vsi: Pointer to VSI structure
*/ staticint ice_max_xdp_frame_size(struct ice_vsi *vsi)
{ if (test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags)) return ICE_RXBUF_1664; else return ICE_RXBUF_3072;
}
/** * ice_xdp_setup_prog - Add or remove XDP eBPF program * @vsi: VSI to setup XDP for * @prog: XDP program * @extack: netlink extended ack
*/ staticint
ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog, struct netlink_ext_ack *extack)
{ unsignedint frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD; int ret = 0, xdp_ring_err = 0; bool if_running;
if (prog && !prog->aux->xdp_has_frags) { if (frame_size > ice_max_xdp_frame_size(vsi)) {
NL_SET_ERR_MSG_MOD(extack, "MTU is too large for linear frames and XDP prog does not support frags"); return -EOPNOTSUPP;
}
}
/* hot swap progs and avoid toggling link */ if (ice_is_xdp_ena_vsi(vsi) == !!prog ||
test_bit(ICE_VSI_REBUILD_PENDING, vsi->state)) {
ice_vsi_assign_bpf_prog(vsi, prog); return 0;
}
/* need to stop netdev while setting up the program for Rx rings */ if (if_running) {
ret = ice_down(vsi); if (ret) {
NL_SET_ERR_MSG_MOD(extack, "Preparing device for XDP attach failed"); return ret;
}
}
if (!ice_is_xdp_ena_vsi(vsi) && prog) {
xdp_ring_err = ice_vsi_determine_xdp_res(vsi); if (xdp_ring_err) {
NL_SET_ERR_MSG_MOD(extack, "Not enough Tx resources for XDP"); goto resume_if;
} else {
xdp_ring_err = ice_prepare_xdp_rings(vsi, prog,
ICE_XDP_CFG_FULL); if (xdp_ring_err) {
NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed"); goto resume_if;
}
}
xdp_features_set_redirect_target(vsi->netdev, true); /* reallocate Rx queues that are used for zero-copy */
xdp_ring_err = ice_realloc_zc_buf(vsi, true); if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Rx resources failed");
} elseif (ice_is_xdp_ena_vsi(vsi) && !prog) {
xdp_features_clear_redirect_target(vsi->netdev);
xdp_ring_err = ice_destroy_xdp_rings(vsi, ICE_XDP_CFG_FULL); if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed"); /* reallocate Rx queues that were used for zero-copy */
xdp_ring_err = ice_realloc_zc_buf(vsi, false); if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Rx resources failed");
}
resume_if: if (if_running)
ret = ice_up(vsi);
if (!ret && prog)
ice_vsi_rx_napi_schedule(vsi);
return (ret || xdp_ring_err) ? -ENOMEM : 0;
}
/** * ice_xdp_safe_mode - XDP handler for safe mode * @dev: netdevice * @xdp: XDP command
*/ staticint ice_xdp_safe_mode(struct net_device __always_unused *dev, struct netdev_bpf *xdp)
{
NL_SET_ERR_MSG_MOD(xdp->extack, "Please provide working DDP firmware package in order to use XDP\n" "Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst"); return -EOPNOTSUPP;
}
if (vsi->type != ICE_VSI_PF && vsi->type != ICE_VSI_SF) {
NL_SET_ERR_MSG_MOD(xdp->extack, "XDP can be loaded only on PF or SF VSI"); return -EINVAL;
}
mutex_lock(&vsi->xdp_state_lock);
switch (xdp->command) { case XDP_SETUP_PROG:
ret = ice_xdp_setup_prog(vsi, xdp->prog, xdp->extack); break; case XDP_SETUP_XSK_POOL:
ret = ice_xsk_pool_setup(vsi, xdp->xsk.pool, xdp->xsk.queue_id); break; default:
ret = -EINVAL;
}
/* Disable anti-spoof detection interrupt to prevent spurious event * interrupts during a function reset. Anti-spoof functionally is * still supported.
*/
val = rd32(hw, GL_MDCK_TX_TDPU);
val |= GL_MDCK_TX_TDPU_RCU_ANTISPOOF_ITR_DIS_M;
wr32(hw, GL_MDCK_TX_TDPU, val);
/* clear things first */
wr32(hw, PFINT_OICR_ENA, 0); /* disable all */
rd32(hw, PFINT_OICR); /* read to clear */
/* If a reset cycle isn't already in progress, we set a bit in * pf->state so that the service task can start a reset/rebuild.
*/ if (!test_and_set_bit(ICE_RESET_OICR_RECV, pf->state)) { if (reset == ICE_RESET_CORER)
set_bit(ICE_CORER_RECV, pf->state); elseif (reset == ICE_RESET_GLOBR)
set_bit(ICE_GLOBR_RECV, pf->state); else
set_bit(ICE_EMPR_RECV, pf->state);
/* There are couple of different bits at play here. * hw->reset_ongoing indicates whether the hardware is * in reset. This is set to true when a reset interrupt * is received and set back to false after the driver * has determined that the hardware is out of reset. * * ICE_RESET_OICR_RECV in pf->state indicates * that a post reset rebuild is required before the * driver is operational again. This is set above. * * As this is the start of the reset/rebuild cycle, set * both to indicate that.
*/
hw->reset_ongoing = true;
}
}
if (oicr & PFINT_OICR_TSYN_TX_M) {
ena_mask &= ~PFINT_OICR_TSYN_TX_M;
/* Report any remaining unexpected interrupts */
oicr &= ena_mask; if (oicr) {
dev_dbg(dev, "unhandled interrupt oicr=0x%08x\n", oicr); /* If a critical error is pending there is no choice but to * reset the device.
*/ if (oicr & (PFINT_OICR_PCI_EXCEPTION_M |
PFINT_OICR_ECC_ERR_M)) {
set_bit(ICE_PFR_REQ, pf->state);
}
}
ice_service_task_schedule(pf); if (ret == IRQ_HANDLED)
ice_irq_dynamic_ena(hw, NULL, NULL);
return ret;
}
/** * ice_misc_intr_thread_fn - misc interrupt thread function * @irq: interrupt number * @data: pointer to a q_vector
*/ static irqreturn_t ice_misc_intr_thread_fn(int __always_unused irq, void *data)
{ struct ice_pf *pf = data; struct ice_hw *hw;
hw = &pf->hw;
if (ice_is_reset_in_progress(pf->state)) goto skip_irq;
if (test_and_clear_bit(ICE_MISC_THREAD_TX_TSTAMP, pf->misc_thread)) { /* Process outstanding Tx timestamps. If there is more work, * re-arm the interrupt to trigger again.
*/ if (ice_ptp_process_ts(pf) == ICE_TX_TSTAMP_WORK_PENDING) {
wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);
ice_flush(hw);
}
}
/** * ice_req_irq_msix_misc - Setup the misc vector to handle non queue events * @pf: board private structure * * This sets up the handler for MSIX 0, which is used to manage the * non-queue interrupts, e.g. AdminQ and errors. This is not used * when in MSI or Legacy interrupt mode.
*/ staticint ice_req_irq_msix_misc(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw;
u32 pf_intr_start_offset; struct msi_map irq; int err = 0;
if (!pf->int_name[0])
snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
dev_driver_string(dev), dev_name(dev));
if (!pf->int_name_ll_ts[0])
snprintf(pf->int_name_ll_ts, sizeof(pf->int_name_ll_ts) - 1, "%s-%s:ll_ts", dev_driver_string(dev), dev_name(dev)); /* Do not request IRQ but do enable OICR interrupt since settings are * lost during reset. Note that this function is called only during * rebuild path and not while reset is in progress.
*/ if (ice_is_reset_in_progress(pf->state)) goto skip_req_irq;
/* reserve one vector in irq_tracker for misc interrupts */
irq = ice_alloc_irq(pf, false); if (irq.index < 0) return irq.index;
/** * ice_set_ops - set netdev and ethtools ops for the given netdev * @vsi: the VSI associated with the new netdev
*/ staticvoid ice_set_ops(struct ice_vsi *vsi)
{ struct net_device *netdev = vsi->netdev; struct ice_pf *pf = ice_netdev_to_pf(netdev);
if (ice_is_safe_mode(pf)) {
netdev->netdev_ops = &ice_netdev_safe_mode_ops;
ice_set_ethtool_safe_mode_ops(netdev); return;
}
netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_GRE_CSUM; /* set features that user can change */
netdev->hw_features = dflt_features | csumo_features |
vlano_features | tso_features;
/* add support for HW_CSUM on packets with MPLS header */
netdev->mpls_features = NETIF_F_HW_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6;
/* enable features */
netdev->features |= netdev->hw_features;
/* encap and VLAN devices inherit default, csumo and tso features */
netdev->hw_enc_features |= dflt_features | csumo_features |
tso_features;
netdev->vlan_features |= dflt_features | csumo_features |
tso_features;
/* advertise support but don't enable by default since only one type of * VLAN offload can be enabled at a time (i.e. CTAG or STAG). When one * type turns on the other has to be turned off. This is enforced by the * ice_fix_features() ndo callback.
*/ if (is_dvm_ena)
netdev->hw_features |= NETIF_F_HW_VLAN_STAG_RX |
NETIF_F_HW_VLAN_STAG_TX;
/* Leave CRC / FCS stripping enabled by default, but allow the value to * be changed at runtime
*/
netdev->hw_features |= NETIF_F_RXFCS;
/* Allow core to manage IRQs affinity */
netif_set_affinity_auto(netdev);
/* Mutual exclusivity for TSO and GCS is enforced by the set features * ndo callback.
*/ if (ice_is_feature_supported(pf, ICE_F_GCS))
netdev->hw_features |= NETIF_F_HW_CSUM;
/** * ice_ctrl_vsi_setup - Set up a control VSI * @pf: board private structure * @pi: pointer to the port_info instance * * Returns pointer to the successfully allocated VSI software struct * on success, otherwise returns NULL on failure.
*/ staticstruct ice_vsi *
ice_ctrl_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{ struct ice_vsi_cfg_params params = {};
/** * ice_vlan_rx_add_vid - Add a VLAN ID filter to HW offload * @netdev: network interface to be adjusted * @proto: VLAN TPID * @vid: VLAN ID to be added * * net_device_ops implementation for adding VLAN IDs
*/ int ice_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi_vlan_ops *vlan_ops; struct ice_vsi *vsi = np->vsi; struct ice_vlan vlan; int ret;
/* VLAN 0 is added by default during load/reset */ if (!vid) return 0;
while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
/* Add multicast promisc rule for the VLAN ID to be added if * all-multicast is currently enabled.
*/ if (vsi->current_netdev_flags & IFF_ALLMULTI) {
ret = ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_VLAN_PROMISC_BITS,
vid); if (ret) goto finish;
}
vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
/* Add a switch rule for this VLAN ID so its corresponding VLAN tagged * packets aren't pruned by the device's internal switch on Rx
*/
vlan = ICE_VLAN(be16_to_cpu(proto), vid, 0);
ret = vlan_ops->add_vlan(vsi, &vlan); if (ret) goto finish;
/* If all-multicast is currently enabled and this VLAN ID is only one * besides VLAN-0 we have to update look-up type of multicast promisc * rule for VLAN-0 from ICE_SW_LKUP_PROMISC to ICE_SW_LKUP_PROMISC_VLAN.
*/ if ((vsi->current_netdev_flags & IFF_ALLMULTI) &&
ice_vsi_num_non_zero_vlans(vsi) == 1) {
ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_PROMISC_BITS, 0);
ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_VLAN_PROMISC_BITS, 0);
}
finish:
clear_bit(ICE_CFG_BUSY, vsi->state);
return ret;
}
/** * ice_vlan_rx_kill_vid - Remove a VLAN ID filter from HW offload * @netdev: network interface to be adjusted * @proto: VLAN TPID * @vid: VLAN ID to be removed * * net_device_ops implementation for removing VLAN IDs
*/ int ice_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi_vlan_ops *vlan_ops; struct ice_vsi *vsi = np->vsi; struct ice_vlan vlan; int ret;
/* don't allow removal of VLAN 0 */ if (!vid) return 0;
while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
ret = ice_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_VLAN_PROMISC_BITS, vid); if (ret) {
netdev_err(netdev, "Error clearing multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags |= IFF_ALLMULTI;
}
vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
/* Make sure VLAN delete is successful before updating VLAN * information
*/
vlan = ICE_VLAN(be16_to_cpu(proto), vid, 0);
ret = vlan_ops->del_vlan(vsi, &vlan); if (ret) goto finish;
/* Remove multicast promisc rule for the removed VLAN ID if * all-multicast is enabled.
*/ if (vsi->current_netdev_flags & IFF_ALLMULTI)
ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_VLAN_PROMISC_BITS, vid);
if (!ice_vsi_has_non_zero_vlans(vsi)) { /* Update look-up type of multicast promisc rule for VLAN 0 * from ICE_SW_LKUP_PROMISC_VLAN to ICE_SW_LKUP_PROMISC when * all-multicast is enabled and VLAN 0 is the only VLAN rule.
*/ if (vsi->current_netdev_flags & IFF_ALLMULTI) {
ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_VLAN_PROMISC_BITS,
0);
ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
ICE_MCAST_PROMISC_BITS, 0);
}
}
/** * ice_get_avail_q_count - Get count of queues in use * @pf_qmap: bitmap to get queue use count from * @lock: pointer to a mutex that protects access to pf_qmap * @size: size of the bitmap
*/ static u16
ice_get_avail_q_count(unsignedlong *pf_qmap, struct mutex *lock, u16 size)
{ unsignedlong bit;
u16 count = 0;
/** * ice_get_avail_txq_count - Get count of Tx queues in use * @pf: pointer to an ice_pf instance
*/
u16 ice_get_avail_txq_count(struct ice_pf *pf)
{ return ice_get_avail_q_count(pf->avail_txqs, &pf->avail_q_mutex,
pf->max_pf_txqs);
}
/** * ice_get_avail_rxq_count - Get count of Rx queues in use * @pf: pointer to an ice_pf instance
*/
u16 ice_get_avail_rxq_count(struct ice_pf *pf)
{ return ice_get_avail_q_count(pf->avail_rxqs, &pf->avail_q_mutex,
pf->max_pf_rxqs);
}
/* ctrl_vsi_idx will be set to a valid value when flow director * is setup by ice_init_fdir
*/
pf->ctrl_vsi_idx = ICE_NO_VSI;
set_bit(ICE_FLAG_FD_ENA, pf->flags); /* force guaranteed filter pool for PF */
ice_alloc_fd_guar_item(&pf->hw, &unused,
func_caps->fd_fltr_guar); /* force shared filter pool for PF */
ice_alloc_fd_shrd_item(&pf->hw, &unused,
func_caps->fd_fltr_best_effort);
}
clear_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags); if (func_caps->common_cap.ieee_1588)
set_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags);
mutex_init(&pf->vfs.table_lock);
hash_init(pf->vfs.table); if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT))
wr32(&pf->hw, E830_MBX_PF_IN_FLIGHT_VF_MSGS_THRESH,
ICE_MBX_OVERFLOW_WATERMARK); else
ice_mbx_init_snapshot(&pf->hw);
xa_init(&pf->dyn_ports);
xa_init(&pf->sf_nums);
return 0;
}
/** * ice_is_wol_supported - check if WoL is supported * @hw: pointer to hardware info * * Check if WoL is supported based on the HW configuration. * Returns true if NVM supports and enables WoL for this port, false otherwise
*/ bool ice_is_wol_supported(struct ice_hw *hw)
{
u16 wol_ctrl;
/* A bit set to 1 in the NVM Software Reserved Word 2 (WoL control * word) indicates WoL is not supported on the corresponding PF ID.
*/ if (ice_read_sr_word(hw, ICE_SR_NVM_WOL_CFG, &wol_ctrl)) returnfalse;
return !(BIT(hw->port_info->lport) & wol_ctrl);
}
/** * ice_vsi_recfg_qs - Change the number of queues on a VSI * @vsi: VSI being changed * @new_rx: new number of Rx queues * @new_tx: new number of Tx queues * @locked: is adev device_lock held * * Only change the number of queues if new_tx, or new_rx is non-0. * * Returns 0 on success.
*/ int ice_vsi_recfg_qs(struct ice_vsi *vsi, int new_rx, int new_tx, bool locked)
{ struct ice_pf *pf = vsi->back; int i, err = 0, timeout = 50;
if (!new_rx && !new_tx) return -EINVAL;
while (test_and_set_bit(ICE_CFG_BUSY, pf->state)) {
timeout--; if (!timeout) return -EBUSY;
usleep_range(1000, 2000);
}
if (new_tx)
vsi->req_txq = (u16)new_tx; if (new_rx)
vsi->req_rxq = (u16)new_rx;
/* set for the next time the netdev is started */ if (!netif_running(vsi->netdev)) {
err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT); if (err) goto rebuild_err;
dev_dbg(ice_pf_to_dev(pf), "Link is down, queue count change happens when link is brought up\n"); goto done;
}
ice_vsi_close(vsi);
err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT); if (err) goto rebuild_err;
rebuild_err:
dev_err(ice_pf_to_dev(pf), "Error during VSI rebuild: %d. Unload and reload the driver.\n",
err);
done:
clear_bit(ICE_CFG_BUSY, pf->state); return err;
}
/** * ice_set_safe_mode_vlan_cfg - configure PF VSI to allow all VLANs in safe mode * @pf: PF to configure * * No VLAN offloads/filtering are advertised in safe mode so make sure the PF * VSI can still Tx/Rx VLAN tagged packets.
*/ staticvoid ice_set_safe_mode_vlan_cfg(struct ice_pf *pf)
{ struct ice_vsi *vsi = ice_get_main_vsi(pf); struct ice_vsi_ctx *ctxt; struct ice_hw *hw; int status;
if (!vsi) return;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL); if (!ctxt) return;
/* disable VLAN pruning and keep all other settings */
ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
/* allow all VLANs on Tx and don't strip on Rx */
ctxt->info.inner_vlan_flags = ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL |
ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING;
status = ice_update_vsi(hw, vsi->idx, ctxt, NULL); if (status) {
dev_err(ice_pf_to_dev(vsi->back), "Failed to update VSI for safe mode VLANs, err %d aq_err %s\n",
status, libie_aq_str(hw->adminq.sq_last_status));
} else {
vsi->info.sec_flags = ctxt->info.sec_flags;
vsi->info.sw_flags2 = ctxt->info.sw_flags2;
vsi->info.inner_vlan_flags = ctxt->info.inner_vlan_flags;
}
kfree(ctxt);
}
/** * ice_log_pkg_init - log result of DDP package load * @hw: pointer to hardware info * @state: state of package load
*/ staticvoid ice_log_pkg_init(struct ice_hw *hw, enum ice_ddp_state state)
{ struct ice_pf *pf = hw->back; struct device *dev;
dev = ice_pf_to_dev(pf);
switch (state) { case ICE_DDP_PKG_SUCCESS:
dev_info(dev, "The DDP package was successfully loaded: %s version %d.%d.%d.%d\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft); break; case ICE_DDP_PKG_SAME_VERSION_ALREADY_LOADED:
dev_info(dev, "DDP package already present on device: %s version %d.%d.%d.%d\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft); break; case ICE_DDP_PKG_ALREADY_LOADED_NOT_SUPPORTED:
dev_err(dev, "The device has a DDP package that is not supported by the driver. The device has package '%s' version %d.%d.x.x. The driver requires version %d.%d.x.x. Entering Safe Mode.\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR); break; case ICE_DDP_PKG_COMPATIBLE_ALREADY_LOADED:
dev_info(dev, "The driver could not load the DDP package file because a compatible DDP package is already present on the device. The device has package '%s' version %d.%d.%d.%d. The package file found by the driver: '%s' version %d.%d.%d.%d.\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft,
hw->pkg_name,
hw->pkg_ver.major,
hw->pkg_ver.minor,
hw->pkg_ver.update,
hw->pkg_ver.draft); break; case ICE_DDP_PKG_FW_MISMATCH:
dev_err(dev, "The firmware loaded on the device is not compatible with the DDP package. Please update the device's NVM. Entering safe mode.\n"); break; case ICE_DDP_PKG_INVALID_FILE:
dev_err(dev, "The DDP package file is invalid. Entering Safe Mode.\n"); break; case ICE_DDP_PKG_FILE_VERSION_TOO_HIGH:
dev_err(dev, "The DDP package file version is higher than the driver supports. Please use an updated driver. Entering Safe Mode.\n"); break; case ICE_DDP_PKG_FILE_VERSION_TOO_LOW:
dev_err(dev, "The DDP package file version is lower than the driver supports. The driver requires version %d.%d.x.x. Please use an updated DDP Package file. Entering Safe Mode.\n",
ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR); break; case ICE_DDP_PKG_FILE_SIGNATURE_INVALID:
dev_err(dev, "The DDP package could not be loaded because its signature is not valid. Please use a valid DDP Package. Entering Safe Mode.\n"); break; case ICE_DDP_PKG_FILE_REVISION_TOO_LOW:
dev_err(dev, "The DDP Package could not be loaded because its security revision is too low. Please use an updated DDP Package. Entering Safe Mode.\n"); break; case ICE_DDP_PKG_LOAD_ERROR:
dev_err(dev, "An error occurred on the device while loading the DDP package. The device will be reset.\n"); /* poll for reset to complete */ if (ice_check_reset(hw))
dev_err(dev, "Error resetting device. Please reload the driver\n"); break; case ICE_DDP_PKG_ERR: default:
dev_err(dev, "An unknown error occurred when loading the DDP package. Entering Safe Mode.\n"); break;
}
}
/** * ice_load_pkg - load/reload the DDP Package file * @firmware: firmware structure when firmware requested or NULL for reload * @pf: pointer to the PF instance * * Called on probe and post CORER/GLOBR rebuild to load DDP Package and * initialize HW tables.
*/ staticvoid
ice_load_pkg(conststruct firmware *firmware, struct ice_pf *pf)
{ enum ice_ddp_state state = ICE_DDP_PKG_ERR; struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw;
/* Load DDP Package */ if (firmware && !hw->pkg_copy) {
state = ice_copy_and_init_pkg(hw, firmware->data,
firmware->size);
ice_log_pkg_init(hw, state);
} elseif (!firmware && hw->pkg_copy) { /* Reload package during rebuild after CORER/GLOBR reset */
state = ice_init_pkg(hw, hw->pkg_copy, hw->pkg_size);
ice_log_pkg_init(hw, state);
} else {
dev_err(dev, "The DDP package file failed to load. Entering Safe Mode.\n");
}
/* Successful download package is the precondition for advanced * features, hence setting the ICE_FLAG_ADV_FEATURES flag
*/
set_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
}
/** * ice_verify_cacheline_size - verify driver's assumption of 64 Byte cache lines * @pf: pointer to the PF structure * * There is no error returned here because the driver should be able to handle * 128 Byte cache lines, so we only print a warning in case issues are seen, * specifically with Tx.
*/ staticvoid ice_verify_cacheline_size(struct ice_pf *pf)
{ if (rd32(&pf->hw, GLPCI_CNF2) & GLPCI_CNF2_CACHELINE_SIZE_M)
dev_warn(ice_pf_to_dev(pf), "%d Byte cache line assumption is invalid, driver may have Tx timeouts!\n",
ICE_CACHE_LINE_BYTES);
}
/** * ice_init_fdir - Initialize flow director VSI and configuration * @pf: pointer to the PF instance * * returns 0 on success, negative on error
*/ staticint ice_init_fdir(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_vsi *ctrl_vsi; int err;
/* Side Band Flow Director needs to have a control VSI. * Allocate it and store it in the PF.
*/
ctrl_vsi = ice_ctrl_vsi_setup(pf, pf->hw.port_info); if (!ctrl_vsi) {
dev_dbg(dev, "could not create control VSI\n"); return -ENOMEM;
}
err = ice_vsi_open_ctrl(ctrl_vsi); if (err) {
dev_dbg(dev, "could not open control VSI\n"); goto err_vsi_open;
}
mutex_init(&pf->hw.fdir_fltr_lock);
err = ice_fdir_create_dflt_rules(pf); if (err) goto err_fdir_rule;
/** * ice_get_opt_fw_name - return optional firmware file name or NULL * @pf: pointer to the PF instance
*/ staticchar *ice_get_opt_fw_name(struct ice_pf *pf)
{ /* Optional firmware name same as default with additional dash * followed by a EUI-64 identifier (PCIe Device Serial Number)
*/ struct pci_dev *pdev = pf->pdev; char *opt_fw_filename;
u64 dsn;
/* Determine the name of the optional file using the DSN (two * dwords following the start of the DSN Capability).
*/
dsn = pci_get_dsn(pdev); if (!dsn) return NULL;
opt_fw_filename = kzalloc(NAME_MAX, GFP_KERNEL); if (!opt_fw_filename) return NULL;
/** * ice_request_fw - Device initialization routine * @pf: pointer to the PF instance * @firmware: double pointer to firmware struct * * Return: zero when successful, negative values otherwise.
*/ staticint ice_request_fw(struct ice_pf *pf, conststruct firmware **firmware)
{ char *opt_fw_filename = ice_get_opt_fw_name(pf); struct device *dev = ice_pf_to_dev(pf); int err = 0;
/* optional device-specific DDP (if present) overrides the default DDP * package file. kernel logs a debug message if the file doesn't exist, * and warning messages for other errors.
*/ if (opt_fw_filename) {
err = firmware_request_nowarn(firmware, opt_fw_filename, dev);
kfree(opt_fw_filename); if (!err) return err;
}
err = request_firmware(firmware, ICE_DDP_PKG_FILE, dev); if (err)
dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n");
return err;
}
/** * ice_init_tx_topology - performs Tx topology initialization * @hw: pointer to the hardware structure * @firmware: pointer to firmware structure * * Return: zero when init was successful, negative values otherwise.
*/ staticint
ice_init_tx_topology(struct ice_hw *hw, conststruct firmware *firmware)
{
u8 num_tx_sched_layers = hw->num_tx_sched_layers; struct ice_pf *pf = hw->back; struct device *dev; int err;
dev = ice_pf_to_dev(pf);
err = ice_cfg_tx_topo(hw, firmware->data, firmware->size); if (!err) { if (hw->num_tx_sched_layers > num_tx_sched_layers)
dev_info(dev, "Tx scheduling layers switching feature disabled\n"); else
dev_info(dev, "Tx scheduling layers switching feature enabled\n"); return 0;
} elseif (err == -ENODEV) { /* If we failed to re-initialize the device, we can no longer * continue loading.
*/
dev_warn(dev, "Failed to initialize hardware after applying Tx scheduling configuration.\n"); return err;
} elseif (err == -EIO) {
dev_info(dev, "DDP package does not support Tx scheduling layers switching feature - please update to the latest DDP package and try again\n"); return 0;
} elseif (err == -EEXIST) { return 0;
}
/* Do not treat this as a fatal error. */
dev_info(dev, "Failed to apply Tx scheduling configuration, err %pe\n",
ERR_PTR(err)); return 0;
}
/** * ice_init_supported_rxdids - Initialize supported Rx descriptor IDs * @hw: pointer to the hardware structure * @pf: pointer to pf structure * * The pf->supported_rxdids bitmap is used to indicate to VFs which descriptor * formats the PF hardware supports. The exact list of supported RXDIDs * depends on the loaded DDP package. The IDs can be determined by reading the * GLFLXP_RXDID_FLAGS register after the DDP package is loaded. * * Note that the legacy 32-byte RXDID 0 is always supported but is not listed * in the DDP package. The 16-byte legacy descriptor is never supported by * VFs.
*/ staticvoid ice_init_supported_rxdids(struct ice_hw *hw, struct ice_pf *pf)
{
pf->supported_rxdids = BIT(ICE_RXDID_LEGACY_1);
for (int i = ICE_RXDID_FLEX_NIC; i < ICE_FLEX_DESC_RXDID_MAX_NUM; i++) {
u32 regval;
/** * ice_init_ddp_config - DDP related configuration * @hw: pointer to the hardware structure * @pf: pointer to pf structure * * This function loads DDP file from the disk, then initializes Tx * topology. At the end DDP package is loaded on the card. * * Return: zero when init was successful, negative values otherwise.
*/ staticint ice_init_ddp_config(struct ice_hw *hw, struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); conststruct firmware *firmware = NULL; int err;
err = ice_request_fw(pf, &firmware); if (err) {
dev_err(dev, "Fail during requesting FW: %d\n", err); return err;
}
err = ice_init_tx_topology(hw, firmware); if (err) {
dev_err(dev, "Fail during initialization of Tx topology: %d\n",
err);
release_firmware(firmware); return err;
}
/* Download firmware to device */
ice_load_pkg(firmware, pf);
release_firmware(firmware);
/* Initialize the supported Rx descriptor IDs after loading DDP */
ice_init_supported_rxdids(hw, pf);
return 0;
}
/** * ice_print_wake_reason - show the wake up cause in the log * @pf: pointer to the PF struct
*/ staticvoid ice_print_wake_reason(struct ice_pf *pf)
{
u32 wus = pf->wakeup_reason; constchar *wake_str;
/* if no wake event, nothing to print */ if (!wus) return;
/** * ice_pf_fwlog_update_module - update 1 module * @pf: pointer to the PF struct * @log_level: log_level to use for the @module * @module: module to update
*/ void ice_pf_fwlog_update_module(struct ice_pf *pf, int log_level, int module)
{ struct ice_hw *hw = &pf->hw;
/** * ice_cfg_netdev - Allocate, configure and register a netdev * @vsi: the VSI associated with the new netdev * * Returns 0 on success, negative value on failure
*/ staticint ice_cfg_netdev(struct ice_vsi *vsi)
{ struct ice_netdev_priv *np; struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
vsi->alloc_rxq); if (!netdev) return -ENOMEM;
int ice_init_dev(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw; int err;
ice_init_feature_support(pf);
err = ice_init_ddp_config(hw, pf);
/* if ice_init_ddp_config fails, ICE_FLAG_ADV_FEATURES bit won't be * set in pf->state, which will cause ice_is_safe_mode to return * true
*/ if (err || ice_is_safe_mode(pf)) { /* we already got function/device capabilities but these don't * reflect what the driver needs to do in safe mode. Instead of * adding conditional logic everywhere to ignore these * device/function capabilities, override them.
*/
ice_set_safe_mode_caps(hw);
}
/* In case of MSIX we are going to setup the misc vector right here * to handle admin queue events etc. In case of legacy and MSI * the misc functionality and queue processing is combined in * the same vector and that gets setup at open.
*/
err = ice_req_irq_msix_misc(pf); if (err) {
dev_err(dev, "setup of misc vector failed: %d\n", err); goto unroll_irq_scheme_init;
}
/* initialize DDP driven features */ if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_init(pf);
if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_init(pf);
if (ice_is_feature_supported(pf, ICE_F_CGU) ||
ice_is_feature_supported(pf, ICE_F_PHY_RCLK))
ice_dpll_init(pf);
/* Note: Flow director init failure is non-fatal to load */ if (ice_init_fdir(pf))
dev_err(dev, "could not initialize flow director\n");
/* Note: DCB init failure is non-fatal to load */ if (ice_init_pf_dcb(pf, false)) {
clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
clear_bit(ICE_FLAG_DCB_ENA, pf->flags);
} else {
ice_cfg_lldp_mib_change(&pf->hw, true);
}
if (ice_init_lag(pf))
dev_warn(dev, "Failed to init link aggregation support\n");
ice_hwmon_init(pf);
}
staticvoid ice_deinit_features(struct ice_pf *pf)
{ if (ice_is_safe_mode(pf)) return;
ice_deinit_lag(pf); if (test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))
ice_cfg_lldp_mib_change(&pf->hw, false);
ice_deinit_fdir(pf); if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_exit(pf); if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_release(pf); if (test_bit(ICE_FLAG_DPLL, pf->flags))
ice_dpll_deinit(pf); if (pf->eswitch_mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
xa_destroy(&pf->eswitch.reprs);
}
staticvoid ice_init_wakeup(struct ice_pf *pf)
{ /* Save wakeup reason register for later use */
pf->wakeup_reason = rd32(&pf->hw, PFPM_WUS);
/* check for a power management event */
ice_print_wake_reason(pf);
/* clear wake status, all bits */
wr32(&pf->hw, PFPM_WUS, U32_MAX);
/* Disable WoL at init, wait for user to enable */
device_set_wakeup_enable(ice_pf_to_dev(pf), false);
}
/* if media available, initialize PHY settings */ if (pf->hw.port_info->phy.link_info.link_info &
ICE_AQ_MEDIA_AVAILABLE) { /* not a fatal error if this fails */
err = ice_init_phy_user_cfg(pf->hw.port_info); if (err)
dev_err(dev, "ice_init_phy_user_cfg failed: %d\n", err);
if (!test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) { struct ice_vsi *vsi = ice_get_main_vsi(pf);
if (vsi)
ice_configure_phy(vsi);
}
} else {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
}
/* create switch struct for the switch element created by FW on boot */
pf->first_sw = kzalloc(sizeof(*pf->first_sw), GFP_KERNEL); if (!pf->first_sw) return -ENOMEM;
if (pf->hw.evb_veb)
pf->first_sw->bridge_mode = BRIDGE_MODE_VEB; else
pf->first_sw->bridge_mode = BRIDGE_MODE_VEPA;
pf->first_sw->pf = pf;
/* record the sw_id available for later use */
pf->first_sw->sw_id = pf->hw.port_info->sw_id;
err = ice_aq_set_port_params(pf->hw.port_info, dvm, NULL); if (err) goto err_aq_set_port_params;
vsi = ice_pf_vsi_setup(pf, pf->hw.port_info); if (!vsi) {
err = -ENOMEM; goto err_pf_vsi_setup;
}
pf->num_alloc_vsi = pf->hw.func_caps.guar_num_vsi; if (!pf->num_alloc_vsi) return -EIO;
if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
dev_warn(dev, "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
}
pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi),
GFP_KERNEL); if (!pf->vsi) return -ENOMEM;
if (pf->hw.mac_type == ICE_MAC_E830) {
err = pci_enable_ptm(pf->pdev, NULL); if (err)
dev_dbg(ice_pf_to_dev(pf), "PCIe PTM not supported by PCIe bus/controller\n");
}
err = ice_alloc_vsis(pf); if (err) goto err_alloc_vsis;
err = ice_init_pf_sw(pf); if (err) goto err_init_pf_sw;
ice_init_wakeup(pf);
err = ice_init_link(pf); if (err) goto err_init_link;
err = ice_send_version(pf); if (err) goto err_init_link;
ice_verify_cacheline_size(pf);
if (ice_is_safe_mode(pf))
ice_set_safe_mode_vlan_cfg(pf); else /* print PCI link speed and width */
pcie_print_link_status(pf->pdev);
/* ready to go, so clear down state bit */
clear_bit(ICE_DOWN, pf->state);
clear_bit(ICE_SERVICE_DIS, pf->state);
/* since everything is good, start the service timer */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
/** * ice_load - load pf by init hw and starting VSI * @pf: pointer to the pf instance * * This function has to be called under devl_lock.
*/ int ice_load(struct ice_pf *pf)
{ struct ice_vsi *vsi; int err;
devl_assert_locked(priv_to_devlink(pf));
vsi = ice_get_main_vsi(pf);
/* init channel list */
INIT_LIST_HEAD(&vsi->ch_list);
/** * ice_unload - unload pf by stopping VSI and deinit hw * @pf: pointer to the pf instance * * This function has to be called under devl_lock.
*/ void ice_unload(struct ice_pf *pf)
{ struct ice_vsi *vsi = ice_get_main_vsi(pf);
dev_err(dev, "Firmware recovery mode detected. Limiting functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode\n");
if (pdev->is_virtfn) {
dev_err(dev, "can't probe a virtual function\n"); return -EINVAL;
}
/* when under a kdump kernel initiate a reset before enabling the * device in order to clear out any pending DMA transactions. These * transactions can cause some systems to machine check when doing * the pcim_enable_device() below.
*/ if (is_kdump_kernel()) {
pci_save_state(pdev);
pci_clear_master(pdev);
err = pcie_flr(pdev); if (err) return err;
pci_restore_state(pdev);
}
/* this driver uses devres, see * Documentation/driver-api/driver-model/devres.rst
*/
err = pcim_enable_device(pdev); if (err) return err;
pf = ice_allocate_pf(dev); if (!pf) return -ENOMEM;
/* initialize Auxiliary index to invalid value */
pf->aux_idx = -1;
/* set up for high or low DMA */
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); if (err) {
dev_err(dev, "DMA configuration failed: 0x%x\n", err); return err;
}
pci_set_master(pdev);
pf->pdev = pdev;
pci_set_drvdata(pdev, pf);
set_bit(ICE_DOWN, pf->state); /* Disable service task until DOWN bit is cleared */
set_bit(ICE_SERVICE_DIS, pf->state);
/** * ice_set_wake - enable or disable Wake on LAN * @pf: pointer to the PF struct * * Simple helper for WoL control
*/ staticvoid ice_set_wake(struct ice_pf *pf)
{ struct ice_hw *hw = &pf->hw; bool wol = pf->wol_ena;
/* clear wake state, otherwise new wake events won't fire */
wr32(hw, PFPM_WUS, U32_MAX);
/* enable / disable APM wake up, no RMW needed */
wr32(hw, PFPM_APM, wol ? PFPM_APM_APME_M : 0);
/* set magic packet filter enabled */
wr32(hw, PFPM_WUFC, wol ? PFPM_WUFC_MAG_M : 0);
}
/** * ice_setup_mc_magic_wake - setup device to wake on multicast magic packet * @pf: pointer to the PF struct * * Issue firmware command to enable multicast magic wake, making * sure that any locally administered address (LAA) is used for * wake, and that PF reset doesn't undo the LAA.
*/ staticvoid ice_setup_mc_magic_wake(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw;
u8 mac_addr[ETH_ALEN]; struct ice_vsi *vsi; int status;
u8 flags;
if (!pf->wol_ena) return;
vsi = ice_get_main_vsi(pf); if (!vsi) return;
/* Get current MAC address in case it's an LAA */ if (vsi->netdev)
ether_addr_copy(mac_addr, vsi->netdev->dev_addr); else
ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
/** * ice_prepare_for_shutdown - prep for PCI shutdown * @pf: board private structure * * Inform or close all dependent features in prep for PCI device shutdown
*/ staticvoid ice_prepare_for_shutdown(struct ice_pf *pf)
{ struct ice_hw *hw = &pf->hw;
u32 v;
/* Notify VFs of impending reset */ if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
dev_dbg(ice_pf_to_dev(pf), "Tearing down internal switch for shutdown\n");
/* disable the VSIs and their queues that are not already DOWN */
ice_pf_dis_all_vsi(pf, false);
ice_for_each_vsi(pf, v) if (pf->vsi[v])
pf->vsi[v]->vsi_num = 0;
ice_shutdown_all_ctrlq(hw, true);
}
/** * ice_reinit_interrupt_scheme - Reinitialize interrupt scheme * @pf: board private structure to reinitialize * * This routine reinitialize interrupt scheme that was cleared during * power management suspend callback. * * This should be called during resume routine to re-allocate the q_vectors * and reacquire interrupts.
*/ staticint ice_reinit_interrupt_scheme(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); int ret, v;
/* Since we clear MSIX flag during suspend, we need to * set it back during resume...
*/
ret = ice_init_interrupt_scheme(pf); if (ret) {
dev_err(dev, "Failed to re-initialize interrupt %d\n", ret); return ret;
}
/* Remap vectors and rings, after successful re-init interrupts */
ice_for_each_vsi(pf, v) { if (!pf->vsi[v]) continue;
ret = ice_vsi_alloc_q_vectors(pf->vsi[v]); if (ret) goto err_reinit;
ice_vsi_map_rings_to_vectors(pf->vsi[v]);
rtnl_lock();
ice_vsi_set_napi_queues(pf->vsi[v]);
rtnl_unlock();
}
ret = ice_req_irq_msix_misc(pf); if (ret) {
dev_err(dev, "Setting up misc vector failed after device suspend %d\n",
ret); goto err_reinit;
}
return 0;
err_reinit: while (v--) if (pf->vsi[v]) {
rtnl_lock();
ice_vsi_clear_napi_queues(pf->vsi[v]);
rtnl_unlock();
ice_vsi_free_q_vectors(pf->vsi[v]);
}
return ret;
}
/** * ice_suspend * @dev: generic device information structure * * Power Management callback to quiesce the device and prepare * for D3 transition.
*/ staticint ice_suspend(struct device *dev)
{ struct pci_dev *pdev = to_pci_dev(dev); struct ice_pf *pf; int disabled, v;
pf = pci_get_drvdata(pdev);
if (!ice_pf_state_is_nominal(pf)) {
dev_err(dev, "Device is not ready, no need to suspend it\n"); return -EBUSY;
}
/* Stop watchdog tasks until resume completion. * Even though it is most likely that the service task is * disabled if the device is suspended or down, the service task's * state is controlled by a different state bit, and we should * store and honor whatever state that bit is in at this point.
*/
disabled = ice_service_task_stop(pf);
ice_deinit_rdma(pf);
/* Already suspended?, then there is nothing to do */ if (test_and_set_bit(ICE_SUSPENDED, pf->state)) { if (!disabled)
ice_service_task_restart(pf); return 0;
}
if (test_bit(ICE_DOWN, pf->state) ||
ice_is_reset_in_progress(pf->state)) {
dev_err(dev, "can't suspend device in reset or already down\n"); if (!disabled)
ice_service_task_restart(pf); return 0;
}
ice_setup_mc_magic_wake(pf);
ice_prepare_for_shutdown(pf);
ice_set_wake(pf);
/* Free vectors, clear the interrupt scheme and release IRQs * for proper hibernation, especially with large number of CPUs. * Otherwise hibernation might fail when mapping all the vectors back * to CPU0.
*/
ice_free_irq_msix_misc(pf);
ice_for_each_vsi(pf, v) { if (!pf->vsi[v]) continue;
rtnl_lock();
ice_vsi_clear_napi_queues(pf->vsi[v]);
rtnl_unlock();
ice_vsi_free_q_vectors(pf->vsi[v]);
}
ice_clear_interrupt_scheme(pf);
/* We cleared the interrupt scheme when we suspended, so we need to * restore it now to resume device functionality.
*/
ret = ice_reinit_interrupt_scheme(pf); if (ret)
dev_err(dev, "Cannot restore interrupt scheme: %d\n", ret);
ret = ice_init_rdma(pf); if (ret)
dev_err(dev, "Reinitialize RDMA during resume failed: %d\n",
ret);
clear_bit(ICE_DOWN, pf->state); /* Now perform PF reset and rebuild */
reset_type = ICE_RESET_PFR; /* re-enable service task for reset, but allow reset to schedule it */
clear_bit(ICE_SERVICE_DIS, pf->state);
if (ice_schedule_reset(pf, reset_type))
dev_err(dev, "Reset during resume failed.\n");
/* Restart the service task */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
return 0;
}
/** * ice_pci_err_detected - warning that PCI error has been detected * @pdev: PCI device information struct * @err: the type of PCI error * * Called to warn that something happened on the PCI bus and the error handling * is in progress. Allows the driver to gracefully prepare/handle PCI errors.
*/ static pci_ers_result_t
ice_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t err)
{ struct ice_pf *pf = pci_get_drvdata(pdev);
if (!test_bit(ICE_SUSPENDED, pf->state)) {
ice_service_task_stop(pf);
if (!test_bit(ICE_PREPARED_FOR_RESET, pf->state)) {
set_bit(ICE_PFR_REQ, pf->state);
ice_prepare_for_reset(pf, ICE_RESET_PFR);
}
}
return PCI_ERS_RESULT_NEED_RESET;
}
/** * ice_pci_err_slot_reset - a PCI slot reset has just happened * @pdev: PCI device information struct * * Called to determine if the driver can recover from the PCI slot reset by * using a register read to determine if the device is recoverable.
*/ static pci_ers_result_t ice_pci_err_slot_reset(struct pci_dev *pdev)
{ struct ice_pf *pf = pci_get_drvdata(pdev);
pci_ers_result_t result; int err;
u32 reg;
err = pci_enable_device_mem(pdev); if (err) {
dev_err(&pdev->dev, "Cannot re-enable PCI device after reset, error %d\n",
err);
result = PCI_ERS_RESULT_DISCONNECT;
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
pci_wake_from_d3(pdev, false);
/* Check for life */
reg = rd32(&pf->hw, GLGEN_RTRIG); if (!reg)
result = PCI_ERS_RESULT_RECOVERED; else
result = PCI_ERS_RESULT_DISCONNECT;
}
return result;
}
/** * ice_pci_err_resume - restart operations after PCI error recovery * @pdev: PCI device information struct * * Called to allow the driver to bring things back up after PCI error and/or * reset recovery have finished
*/ staticvoid ice_pci_err_resume(struct pci_dev *pdev)
{ struct ice_pf *pf = pci_get_drvdata(pdev);
if (!pf) {
dev_err(&pdev->dev, "%s failed, device is unrecoverable\n",
__func__); return;
}
if (test_bit(ICE_SUSPENDED, pf->state)) {
dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n",
__func__); return;
}
/** * ice_module_init - Driver registration routine * * ice_module_init is the first routine called when the driver is * loaded. All it does is register with the PCI subsystem.
*/ staticint __init ice_module_init(void)
{ int status = -ENOMEM;
/** * ice_module_exit - Driver exit cleanup routine * * ice_module_exit is called just before the driver is removed * from memory.
*/ staticvoid __exit ice_module_exit(void)
{
ice_sf_driver_unregister();
pci_unregister_driver(&ice_driver);
ice_debugfs_exit();
destroy_workqueue(ice_wq);
destroy_workqueue(ice_lag_wq);
pr_info("module unloaded\n");
}
module_exit(ice_module_exit);
/** * ice_set_mac_address - NDO callback to set MAC address * @netdev: network interface device structure * @pi: pointer to an address structure * * Returns 0 on success, negative on failure
*/ staticint ice_set_mac_address(struct net_device *netdev, void *pi)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw; struct sockaddr *addr = pi;
u8 old_mac[ETH_ALEN];
u8 flags = 0;
u8 *mac; int err;
mac = (u8 *)addr->sa_data;
if (!is_valid_ether_addr(mac)) return -EADDRNOTAVAIL;
if (test_bit(ICE_DOWN, pf->state) ||
ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't set mac %pM. device not ready\n",
mac); return -EBUSY;
}
if (ice_chnl_dmac_fltr_cnt(pf)) {
netdev_err(netdev, "can't set mac %pM. Device has tc-flower filters, delete all of them and try again\n",
mac); return -EAGAIN;
}
netif_addr_lock_bh(netdev);
ether_addr_copy(old_mac, netdev->dev_addr); /* change the netdev's MAC address */
eth_hw_addr_set(netdev, mac);
netif_addr_unlock_bh(netdev);
/* Clean up old MAC filter. Not an error if old filter doesn't exist */
err = ice_fltr_remove_mac(vsi, old_mac, ICE_FWD_TO_VSI); if (err && err != -ENOENT) {
err = -EADDRNOTAVAIL; goto err_update_filters;
}
/* Add filter for new MAC. If filter exists, return success */
err = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI); if (err == -EEXIST) { /* Although this MAC filter is already present in hardware it's * possible in some cases (e.g. bonding) that dev_addr was * modified outside of the driver and needs to be restored back * to this value.
*/
netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);
return 0;
} elseif (err) { /* error if the new filter addition failed */
err = -EADDRNOTAVAIL;
}
err_update_filters: if (err) {
netdev_err(netdev, "can't set MAC %pM. filter update failed\n",
mac);
netif_addr_lock_bh(netdev);
eth_hw_addr_set(netdev, old_mac);
netif_addr_unlock_bh(netdev); return err;
}
netdev_dbg(vsi->netdev, "updated MAC address to %pM\n",
netdev->dev_addr);
/* write new MAC address to the firmware */
flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
err = ice_aq_manage_mac_write(hw, mac, flags, NULL); if (err) {
netdev_err(netdev, "can't set MAC %pM. write to firmware failed error %d\n",
mac, err);
} return 0;
}
if (!vsi || ice_is_switchdev_running(vsi->back)) return;
/* Set the flags to synchronize filters * ndo_set_rx_mode may be triggered even without a change in netdev * flags
*/
set_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags);
/* schedule our worker thread which will take care of * applying the new filter changes
*/
ice_service_task_schedule(vsi->back);
}
/** * ice_set_tx_maxrate - NDO callback to set the maximum per-queue bitrate * @netdev: network interface device structure * @queue_index: Queue ID * @maxrate: maximum bandwidth in Mbps
*/ staticint
ice_set_tx_maxrate(struct net_device *netdev, int queue_index, u32 maxrate)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi;
u16 q_handle; int status;
u8 tc;
/* Validate maxrate requested is within permitted range */ if (maxrate && (maxrate > (ICE_SCHED_MAX_BW / 1000))) {
netdev_err(netdev, "Invalid max rate %d specified for the queue %d\n",
maxrate, queue_index); return -EINVAL;
}
vsi = ice_locate_vsi_using_queue(vsi, queue_index); if (!vsi) {
netdev_err(netdev, "Invalid VSI for given queue %d\n",
queue_index); return -EINVAL;
}
/* Set BW back to default, when user set maxrate to 0 */ if (!maxrate)
status = ice_cfg_q_bw_dflt_lmt(vsi->port_info, vsi->idx, tc,
q_handle, ICE_MAX_BW); else
status = ice_cfg_q_bw_lmt(vsi->port_info, vsi->idx, tc,
q_handle, ICE_MAX_BW, maxrate * 1000); if (status)
netdev_err(netdev, "Unable to set Tx max rate, error %d\n",
status);
return status;
}
/** * ice_fdb_add - add an entry to the hardware database * @ndm: the input from the stack * @tb: pointer to array of nladdr (unused) * @dev: the net device pointer * @addr: the MAC address entry being added * @vid: VLAN ID * @flags: instructions from stack about fdb operation * @notified: whether notification was emitted * @extack: netlink extended ack
*/ staticint
ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[], struct net_device *dev, constunsignedchar *addr, u16 vid,
u16 flags, bool *notified, struct netlink_ext_ack __always_unused *extack)
{ int err;
if (vid) {
netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n"); return -EINVAL;
} if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
netdev_err(dev, "FDB only supports static addresses\n"); return -EINVAL;
}
/* Only return duplicate errors if NLM_F_EXCL is set */ if (err == -EEXIST && !(flags & NLM_F_EXCL))
err = 0;
return err;
}
/** * ice_fdb_del - delete an entry from the hardware database * @ndm: the input from the stack * @tb: pointer to array of nladdr (unused) * @dev: the net device pointer * @addr: the MAC address entry being added * @vid: VLAN ID * @notified: whether notification was emitted * @extack: netlink extended ack
*/ staticint
ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[], struct net_device *dev, constunsignedchar *addr,
__always_unused u16 vid, bool *notified, struct netlink_ext_ack *extack)
{ int err;
if (ndm->ndm_state & NUD_PERMANENT) {
netdev_err(dev, "FDB only supports static addresses\n"); return -EINVAL;
}
/** * ice_fix_features - fix the netdev features flags based on device limitations * @netdev: ptr to the netdev that flags are being fixed on * @features: features that need to be checked and possibly fixed * * Make sure any fixups are made to features in this callback. This enables the * driver to not have to check unsupported configurations throughout the driver * because that's the responsiblity of this callback. * * Single VLAN Mode (SVM) Supported Features: * NETIF_F_HW_VLAN_CTAG_FILTER * NETIF_F_HW_VLAN_CTAG_RX * NETIF_F_HW_VLAN_CTAG_TX * * Double VLAN Mode (DVM) Supported Features: * NETIF_F_HW_VLAN_CTAG_FILTER * NETIF_F_HW_VLAN_CTAG_RX * NETIF_F_HW_VLAN_CTAG_TX * * NETIF_F_HW_VLAN_STAG_FILTER * NETIF_HW_VLAN_STAG_RX * NETIF_HW_VLAN_STAG_TX * * Features that need fixing: * Cannot simultaneously enable CTAG and STAG stripping and/or insertion. * These are mutually exlusive as the VSI context cannot support multiple * VLAN ethertypes simultaneously for stripping and/or insertion. If this * is not done, then default to clearing the requested STAG offload * settings. * * All supported filtering has to be enabled or disabled together. For * example, in DVM, CTAG and STAG filtering have to be enabled and disabled * together. If this is not done, then default to VLAN filtering disabled. * These are mutually exclusive as there is currently no way to * enable/disable VLAN filtering based on VLAN ethertype when using VLAN * prune rules.
*/ static netdev_features_t
ice_fix_features(struct net_device *netdev, netdev_features_t features)
{ struct ice_netdev_priv *np = netdev_priv(netdev);
netdev_features_t req_vlan_fltr, cur_vlan_fltr; bool cur_ctag, cur_stag, req_ctag, req_stag;
if (req_vlan_fltr != cur_vlan_fltr) { if (ice_is_dvm_ena(&np->vsi->back->hw)) { if (req_ctag && req_stag) {
features |= NETIF_VLAN_FILTERING_FEATURES;
} elseif (!req_ctag && !req_stag) {
features &= ~NETIF_VLAN_FILTERING_FEATURES;
} elseif ((!cur_ctag && req_ctag && !cur_stag) ||
(!cur_stag && req_stag && !cur_ctag)) {
features |= NETIF_VLAN_FILTERING_FEATURES;
netdev_warn(netdev, "802.1Q and 802.1ad VLAN filtering must be either both on or both off. VLAN filtering has been enabled for both types.\n");
} elseif ((cur_ctag && !req_ctag && cur_stag) ||
(cur_stag && !req_stag && cur_ctag)) {
features &= ~NETIF_VLAN_FILTERING_FEATURES;
netdev_warn(netdev, "802.1Q and 802.1ad VLAN filtering must be either both on or both off. VLAN filtering has been disabled for both types.\n");
}
} else { if (req_vlan_fltr & NETIF_F_HW_VLAN_STAG_FILTER)
netdev_warn(netdev, "cannot support requested 802.1ad filtering setting in SVM mode\n");
if (req_vlan_fltr & NETIF_F_HW_VLAN_CTAG_FILTER)
features |= NETIF_F_HW_VLAN_CTAG_FILTER;
}
}
if ((features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) &&
(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))) {
netdev_warn(netdev, "cannot support CTAG and STAG VLAN stripping and/or insertion simultaneously since CTAG and STAG offloads are mutually exclusive, clearing STAG offload settings\n");
features &= ~(NETIF_F_HW_VLAN_STAG_RX |
NETIF_F_HW_VLAN_STAG_TX);
}
if (!(netdev->features & NETIF_F_RXFCS) &&
(features & NETIF_F_RXFCS) &&
(features & NETIF_VLAN_STRIPPING_FEATURES) &&
!ice_vsi_has_non_zero_vlans(np->vsi)) {
netdev_warn(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n");
features &= ~NETIF_VLAN_STRIPPING_FEATURES;
}
return features;
}
/** * ice_set_rx_rings_vlan_proto - update rings with new stripped VLAN proto * @vsi: PF's VSI * @vlan_ethertype: VLAN ethertype (802.1Q or 802.1ad) in network byte order * * Store current stripped VLAN proto in ring packet context, * so it can be accessed more efficiently by packet processing code.
*/ staticvoid
ice_set_rx_rings_vlan_proto(struct ice_vsi *vsi, __be16 vlan_ethertype)
{
u16 i;
/** * ice_set_vlan_offload_features - set VLAN offload features for the PF VSI * @vsi: PF's VSI * @features: features used to determine VLAN offload settings * * First, determine the vlan_ethertype based on the VLAN offload bits in * features. Then determine if stripping and insertion should be enabled or * disabled. Finally enable or disable VLAN stripping and insertion.
*/ staticint
ice_set_vlan_offload_features(struct ice_vsi *vsi, netdev_features_t features)
{ bool enable_stripping = true, enable_insertion = true; struct ice_vsi_vlan_ops *vlan_ops; int strip_err = 0, insert_err = 0;
u16 vlan_ethertype = 0;
/** * ice_set_vlan_filtering_features - set VLAN filtering features for the PF VSI * @vsi: PF's VSI * @features: features used to determine VLAN filtering settings * * Enable or disable Rx VLAN filtering based on the VLAN filtering bits in the * features.
*/ staticint
ice_set_vlan_filtering_features(struct ice_vsi *vsi, netdev_features_t features)
{ struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); int err = 0;
/* support Single VLAN Mode (SVM) and Double VLAN Mode (DVM) by checking * if either bit is set. In switchdev mode Rx filtering should never be * enabled.
*/ if ((features &
(NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER)) &&
!ice_is_eswitch_mode_switchdev(vsi->back))
err = vlan_ops->ena_rx_filtering(vsi); else
err = vlan_ops->dis_rx_filtering(vsi);
return err;
}
/** * ice_set_vlan_features - set VLAN settings based on suggested feature set * @netdev: ptr to the netdev being adjusted * @features: the feature set that the stack is suggesting * * Only update VLAN settings if the requested_vlan_features are different than * the current_vlan_features.
*/ staticint
ice_set_vlan_features(struct net_device *netdev, netdev_features_t features)
{
netdev_features_t current_vlan_features, requested_vlan_features; struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; int err;
current_vlan_features = netdev->features & NETIF_VLAN_OFFLOAD_FEATURES;
requested_vlan_features = features & NETIF_VLAN_OFFLOAD_FEATURES; if (current_vlan_features ^ requested_vlan_features) { if ((features & NETIF_F_RXFCS) &&
(features & NETIF_VLAN_STRIPPING_FEATURES)) {
dev_err(ice_pf_to_dev(vsi->back), "To enable VLAN stripping, you must first enable FCS/CRC stripping\n"); return -EIO;
}
err = ice_set_vlan_offload_features(vsi, features); if (err) return err;
}
current_vlan_features = netdev->features &
NETIF_VLAN_FILTERING_FEATURES;
requested_vlan_features = features & NETIF_VLAN_FILTERING_FEATURES; if (current_vlan_features ^ requested_vlan_features) {
err = ice_set_vlan_filtering_features(vsi, features); if (err) return err;
}
return 0;
}
/** * ice_set_loopback - turn on/off loopback mode on underlying PF * @vsi: ptr to VSI * @ena: flag to indicate the on/off setting
*/ staticint ice_set_loopback(struct ice_vsi *vsi, bool ena)
{ bool if_running = netif_running(vsi->netdev); int ret;
if (if_running && !test_and_set_bit(ICE_VSI_DOWN, vsi->state)) {
ret = ice_down(vsi); if (ret) {
netdev_err(vsi->netdev, "Preparing device to toggle loopback failed\n"); return ret;
}
}
ret = ice_aq_set_mac_loopback(&vsi->back->hw, ena, NULL); if (ret)
netdev_err(vsi->netdev, "Failed to toggle loopback state\n"); if (if_running)
ret = ice_up(vsi);
return ret;
}
/** * ice_set_features - set the netdev feature flags * @netdev: ptr to the netdev being adjusted * @features: the feature set that the stack is suggesting
*/ staticint
ice_set_features(struct net_device *netdev, netdev_features_t features)
{
netdev_features_t changed = netdev->features ^ features; struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; int ret = 0;
/* Don't set any netdev advanced features with device in Safe Mode */ if (ice_is_safe_mode(pf)) {
dev_err(ice_pf_to_dev(pf), "Device is in Safe Mode - not enabling advanced netdev features\n"); return ret;
}
/* Do not change setting during reset */ if (ice_is_reset_in_progress(pf->state)) {
dev_err(ice_pf_to_dev(pf), "Device is resetting, changing advanced netdev features temporarily unavailable.\n"); return -EBUSY;
}
/* Multiple features can be changed in one call so keep features in * separate if/else statements to guarantee each feature is checked
*/ if (changed & NETIF_F_RXHASH)
ice_vsi_manage_rss_lut(vsi, !!(features & NETIF_F_RXHASH));
ret = ice_set_vlan_features(netdev, features); if (ret) return ret;
/* Turn on receive of FCS aka CRC, and after setting this * flag the packet data will have the 4 byte CRC appended
*/ if (changed & NETIF_F_RXFCS) { if ((features & NETIF_F_RXFCS) &&
(features & NETIF_VLAN_STRIPPING_FEATURES)) {
dev_err(ice_pf_to_dev(vsi->back), "To disable FCS/CRC stripping, you must first disable VLAN stripping\n"); return -EIO;
}
ice_vsi_cfg_crc_strip(vsi, !!(features & NETIF_F_RXFCS));
ret = ice_down_up(vsi); if (ret) return ret;
}
if (changed & NETIF_F_NTUPLE) { bool ena = !!(features & NETIF_F_NTUPLE);
ice_vsi_manage_fdir(vsi, ena);
ena ? ice_init_arfs(vsi) : ice_clear_arfs(vsi);
}
/* don't turn off hw_tc_offload when ADQ is already enabled */ if (!(features & NETIF_F_HW_TC) && ice_is_adq_active(pf)) {
dev_err(ice_pf_to_dev(pf), "ADQ is active, can't turn hw_tc_offload off\n"); return -EACCES;
}
if (changed & NETIF_F_HW_TC) { bool ena = !!(features & NETIF_F_HW_TC);
if (changed & NETIF_F_LOOPBACK)
ret = ice_set_loopback(vsi, !!(features & NETIF_F_LOOPBACK));
/* Due to E830 hardware limitations, TSO (NETIF_F_ALL_TSO) with GCS * (NETIF_F_HW_CSUM) is not supported.
*/ if (ice_is_feature_supported(pf, ICE_F_GCS) &&
((features & NETIF_F_HW_CSUM) && (features & NETIF_F_ALL_TSO))) { if (netdev->features & NETIF_F_HW_CSUM)
dev_err(ice_pf_to_dev(pf), "To enable TSO, you must first disable HW checksum.\n"); else
dev_err(ice_pf_to_dev(pf), "To enable HW checksum, you must first disable TSO.\n"); return -EIO;
}
return ret;
}
/** * ice_vsi_vlan_setup - Setup VLAN offload properties on a PF VSI * @vsi: VSI to setup VLAN properties for
*/ staticint ice_vsi_vlan_setup(struct ice_vsi *vsi)
{ int err;
err = ice_set_vlan_offload_features(vsi, vsi->netdev->features); if (err) return err;
err = ice_set_vlan_filtering_features(vsi, vsi->netdev->features); if (err) return err;
return ice_vsi_add_vlan_zero(vsi);
}
/** * ice_vsi_cfg_lan - Setup the VSI lan related config * @vsi: the VSI being configured * * Return 0 on success and negative value on error
*/ int ice_vsi_cfg_lan(struct ice_vsi *vsi)
{ int err;
if (vsi->netdev && vsi->type == ICE_VSI_PF) {
ice_set_rx_mode(vsi->netdev);
err = ice_vsi_vlan_setup(vsi); if (err) return err;
}
ice_vsi_cfg_dcb_rings(vsi);
err = ice_vsi_cfg_lan_txqs(vsi); if (!err && ice_is_xdp_ena_vsi(vsi))
err = ice_vsi_cfg_xdp_txqs(vsi); if (!err)
err = ice_vsi_cfg_rxqs(vsi);
return err;
}
/* THEORY OF MODERATION: * The ice driver hardware works differently than the hardware that DIMLIB was * originally made for. ice hardware doesn't have packet count limits that * can trigger an interrupt, but it *does* have interrupt rate limit support, * which is hard-coded to a limit of 250,000 ints/second. * If not using dynamic moderation, the INTRL value can be modified * by ethtool rx-usecs-high.
*/ struct ice_dim { /* the throttle rate for interrupts, basically worst case delay before * an initial interrupt fires, value is stored in microseconds.
*/
u16 itr;
};
/* Make a different profile for Rx that doesn't allow quite so aggressive * moderation at the high end (it maxes out at 126us or about 8k interrupts a * second.
*/ staticconststruct ice_dim rx_profile[] = {
{2}, /* 500,000 ints/s, capped at 250K by INTRL */
{8}, /* 125,000 ints/s */
{16}, /* 62,500 ints/s */
{62}, /* 16,129 ints/s */
{126} /* 7,936 ints/s */
};
/* The transmit profile, which has the same sorts of values * as the previous struct
*/ staticconststruct ice_dim tx_profile[] = {
{2}, /* 500,000 ints/s, capped at 250K by INTRL */
{8}, /* 125,000 ints/s */
{40}, /* 16,125 ints/s */
{128}, /* 7,812 ints/s */
{256} /* 3,906 ints/s */
};
/** * ice_init_moderation - set up interrupt moderation * @q_vector: the vector containing rings to be configured * * Set up interrupt moderation registers, with the intent to do the right thing * when called from reset or from probe, and whether or not dynamic moderation * is enabled or not. Take special care to write all the registers in both * dynamic moderation mode or not in order to make sure hardware is in a known * state.
*/ staticvoid ice_init_moderation(struct ice_q_vector *q_vector)
{ struct ice_ring_container *rc; bool tx_dynamic, rx_dynamic;
/* set the initial RX ITR to match the above */
ice_write_itr(rc, rx_dynamic ? rx_profile[rc->dim.profile_ix].itr :
rc->itr_setting);
ice_set_q_vector_intrl(q_vector);
}
/** * ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI * @vsi: the VSI being configured
*/ staticvoid ice_napi_enable_all(struct ice_vsi *vsi)
{ int q_idx;
if (q_vector->rx.rx_ring || q_vector->tx.tx_ring)
napi_enable(&q_vector->napi);
}
}
/** * ice_up_complete - Finish the last steps of bringing up a connection * @vsi: The VSI being configured * * Return 0 on success and negative value on error
*/ staticint ice_up_complete(struct ice_vsi *vsi)
{ struct ice_pf *pf = vsi->back; int err;
ice_vsi_cfg_msix(vsi);
/* Enable only Rx rings, Tx rings were enabled by the FW when the * Tx queue group list was configured and the context bits were * programmed using ice_vsi_cfg_txqs
*/
err = ice_vsi_start_all_rx_rings(vsi); if (err) return err;
/* Perform an initial read of the statistics registers now to * set the baseline so counters are ready when interface is up
*/
ice_update_eth_stats(vsi);
if (vsi->type == ICE_VSI_PF)
ice_service_task_schedule(pf);
return 0;
}
/** * ice_up - Bring the connection back up after being down * @vsi: VSI being configured
*/ int ice_up(struct ice_vsi *vsi)
{ int err;
err = ice_vsi_cfg_lan(vsi); if (!err)
err = ice_up_complete(vsi);
return err;
}
/** * ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring * @syncp: pointer to u64_stats_sync * @stats: stats that pkts and bytes count will be taken from * @pkts: packets stats counter * @bytes: bytes stats counter * * This function fetches stats from the ring considering the atomic operations * that needs to be performed to read u64 values in 32 bit machine.
*/ void
ice_fetch_u64_stats_per_ring(struct u64_stats_sync *syncp, struct ice_q_stats stats, u64 *pkts, u64 *bytes)
{ unsignedint start;
do {
start = u64_stats_fetch_begin(syncp);
*pkts = stats.pkts;
*bytes = stats.bytes;
} while (u64_stats_fetch_retry(syncp, start));
}
/** * ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters * @vsi: the VSI to be updated * @vsi_stats: the stats struct to be updated * @rings: rings to work on * @count: number of rings
*/ staticvoid
ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct rtnl_link_stats64 *vsi_stats, struct ice_tx_ring **rings, u16 count)
{
u16 i;
for (i = 0; i < count; i++) { struct ice_tx_ring *ring;
u64 pkts = 0, bytes = 0;
/* Update netdev counters, but keep in mind that values could start at * random value after PF reset. And as we increase the reported stat by * diff of Prev-Cur, we need to be sure that Prev is valid. If it's not, * let's skip this round.
*/ if (likely(pf->stat_prev_loaded)) {
net_stats->tx_packets += vsi_stats->tx_packets - stats_prev->tx_packets;
net_stats->tx_bytes += vsi_stats->tx_bytes - stats_prev->tx_bytes;
net_stats->rx_packets += vsi_stats->rx_packets - stats_prev->rx_packets;
net_stats->rx_bytes += vsi_stats->rx_bytes - stats_prev->rx_bytes;
}
/* update some more netdev stats if this is main VSI */ if (vsi->type == ICE_VSI_PF) {
cur_ns->rx_crc_errors = pf->stats.crc_errors;
cur_ns->rx_errors = pf->stats.crc_errors +
pf->stats.illegal_bytes +
pf->stats.rx_undersize +
pf->hw_csum_rx_error +
pf->stats.rx_jabber +
pf->stats.rx_fragments +
pf->stats.rx_oversize; /* record drops from the port level */
cur_ns->rx_missed_errors = pf->stats.eth.rx_discards;
}
}
/* netdev packet/byte stats come from ring counter. These are obtained * by summing up ring counters (done by ice_update_vsi_ring_stats). * But, only call the update routine and read the registers if VSI is * not down.
*/ if (!test_bit(ICE_VSI_DOWN, vsi->state))
ice_update_vsi_ring_stats(vsi);
stats->tx_packets = vsi_stats->tx_packets;
stats->tx_bytes = vsi_stats->tx_bytes;
stats->rx_packets = vsi_stats->rx_packets;
stats->rx_bytes = vsi_stats->rx_bytes;
/* The rest of the stats can be read from the hardware but instead we * just return values that the watchdog task has already obtained from * the hardware.
*/
stats->multicast = vsi_stats->multicast;
stats->tx_errors = vsi_stats->tx_errors;
stats->tx_dropped = vsi_stats->tx_dropped;
stats->rx_errors = vsi_stats->rx_errors;
stats->rx_dropped = vsi_stats->rx_dropped;
stats->rx_crc_errors = vsi_stats->rx_crc_errors;
stats->rx_length_errors = vsi_stats->rx_length_errors;
}
/** * ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI * @vsi: VSI having NAPI disabled
*/ staticvoid ice_napi_disable_all(struct ice_vsi *vsi)
{ int q_idx;
/** * ice_vsi_dis_irq - Mask off queue interrupt generation on the VSI * @vsi: the VSI being un-configured
*/ staticvoid ice_vsi_dis_irq(struct ice_vsi *vsi)
{ struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw;
u32 val; int i;
/* disable interrupt causation from each Rx queue; Tx queues are * handled in ice_vsi_stop_tx_ring()
*/ if (vsi->rx_rings) {
ice_for_each_rxq(vsi, i) { if (vsi->rx_rings[i]) {
u16 reg;
reg = vsi->rx_rings[i]->reg_idx;
val = rd32(hw, QINT_RQCTL(reg));
val &= ~QINT_RQCTL_CAUSE_ENA_M;
wr32(hw, QINT_RQCTL(reg), val);
}
}
}
/* disable each interrupt */
ice_for_each_q_vector(vsi, i) { if (!vsi->q_vectors[i]) continue;
wr32(hw, GLINT_DYN_CTL(vsi->q_vectors[i]->reg_idx), 0);
}
ice_flush(hw);
/* don't call synchronize_irq() for VF's from the host */ if (vsi->type == ICE_VSI_VF) return;
/** * ice_down - Shutdown the connection * @vsi: The VSI being stopped * * Caller of this function is expected to set the vsi->state ICE_DOWN bit
*/ int ice_down(struct ice_vsi *vsi)
{ int i, tx_err, rx_err, vlan_err = 0;
if (tx_err || rx_err || vlan_err) {
netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id); return -EIO;
}
return 0;
}
/** * ice_down_up - shutdown the VSI connection and bring it up * @vsi: the VSI to be reconnected
*/ int ice_down_up(struct ice_vsi *vsi)
{ int ret;
/* if DOWN already set, nothing to do */ if (test_and_set_bit(ICE_VSI_DOWN, vsi->state)) return 0;
ret = ice_down(vsi); if (ret) return ret;
ret = ice_up(vsi); if (ret) {
netdev_err(vsi->netdev, "reallocating resources failed during netdev features change, may need to reload driver\n"); return ret;
}
return 0;
}
/** * ice_vsi_setup_tx_rings - Allocate VSI Tx queue resources * @vsi: VSI having resources allocated * * Return 0 on success, negative on failure
*/ int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
{ int i, err = 0;
if (!vsi->num_txq) {
dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Tx queues\n",
vsi->vsi_num); return -EINVAL;
}
if (vsi->netdev)
ring->netdev = vsi->netdev;
err = ice_setup_tx_ring(ring); if (err) break;
}
return err;
}
/** * ice_vsi_setup_rx_rings - Allocate VSI Rx queue resources * @vsi: VSI having resources allocated * * Return 0 on success, negative on failure
*/ int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
{ int i, err = 0;
if (!vsi->num_rxq) {
dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Rx queues\n",
vsi->vsi_num); return -EINVAL;
}
if (vsi->netdev)
ring->netdev = vsi->netdev;
err = ice_setup_rx_ring(ring); if (err) break;
}
return err;
}
/** * ice_vsi_open_ctrl - open control VSI for use * @vsi: the VSI to open * * Initialization of the Control VSI * * Returns 0 on success, negative value on error
*/ int ice_vsi_open_ctrl(struct ice_vsi *vsi)
{ char int_name[ICE_INT_NAME_STR_LEN]; struct ice_pf *pf = vsi->back; struct device *dev; int err;
dev = ice_pf_to_dev(pf); /* allocate descriptors */
err = ice_vsi_setup_tx_rings(vsi); if (err) goto err_setup_tx;
err = ice_vsi_setup_rx_rings(vsi); if (err) goto err_setup_rx;
err = ice_vsi_cfg_lan(vsi); if (err) goto err_setup_rx;
/** * ice_vsi_open - Called when a network interface is made active * @vsi: the VSI to open * * Initialization of the VSI * * Returns 0 on success, negative value on error
*/ int ice_vsi_open(struct ice_vsi *vsi)
{ char int_name[ICE_INT_NAME_STR_LEN]; struct ice_pf *pf = vsi->back; int err;
if (vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_SF) { /* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq); if (err) goto err_set_qs;
err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_rxq); if (err) goto err_set_qs;
ice_vsi_set_napi_queues(vsi);
}
err = ice_up_complete(vsi); if (err) goto err_up_complete;
/** * ice_vsi_release_all - Delete all VSIs * @pf: PF from which all VSIs are being removed
*/ staticvoid ice_vsi_release_all(struct ice_pf *pf)
{ int err, i;
if (!pf->vsi) return;
ice_for_each_vsi(pf, i) { if (!pf->vsi[i]) continue;
if (pf->vsi[i]->type == ICE_VSI_CHNL) continue;
err = ice_vsi_release(pf->vsi[i]); if (err)
dev_dbg(ice_pf_to_dev(pf), "Failed to release pf->vsi[%d], err %d, vsi_num = %d\n",
i, err, pf->vsi[i]->vsi_num);
}
}
/** * ice_vsi_rebuild_by_type - Rebuild VSI of a given type * @pf: pointer to the PF instance * @type: VSI type to rebuild * * Iterates through the pf->vsi array and rebuilds VSIs of the requested type
*/ staticint ice_vsi_rebuild_by_type(struct ice_pf *pf, enum ice_vsi_type type)
{ struct device *dev = ice_pf_to_dev(pf); int i, err;
/* rebuild the VSI */
err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_INIT); if (err) {
dev_err(dev, "rebuild VSI failed, err %d, VSI index %d, type %s\n",
err, vsi->idx, ice_vsi_type_str(type)); return err;
}
/* replay filters for the VSI */
err = ice_replay_vsi(&pf->hw, vsi->idx); if (err) {
dev_err(dev, "replay VSI failed, error %d, VSI index %d, type %s\n",
err, vsi->idx, ice_vsi_type_str(type)); return err;
}
/* Re-map HW VSI number, using VSI handle that has been * previously validated in ice_replay_vsi() call above
*/
vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
/* enable the VSI */
err = ice_ena_vsi(vsi, false); if (err) {
dev_err(dev, "enable VSI failed, err %d, VSI index %d, type %s\n",
err, vsi->idx, ice_vsi_type_str(type)); return err;
}
dev_info(dev, "VSI rebuilt. VSI index %d, type %s\n", vsi->idx,
ice_vsi_type_str(type));
}
return 0;
}
/** * ice_update_pf_netdev_link - Update PF netdev link status * @pf: pointer to the PF instance
*/ staticvoid ice_update_pf_netdev_link(struct ice_pf *pf)
{ bool link_up; int i;
/** * ice_rebuild - rebuild after reset * @pf: PF to rebuild * @reset_type: type of reset * * Do not rebuild VF VSI in this flow because that is already handled via * ice_reset_all_vfs(). This is because requirements for resetting a VF after a * PFR/CORER/GLOBER/etc. are different than the normal flow. Also, we don't want * to reset/rebuild all the VF VSI twice.
*/ staticvoid ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
{ struct ice_vsi *vsi = ice_get_main_vsi(pf); struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw; bool dvm; int err;
if (test_bit(ICE_DOWN, pf->state)) goto clear_recovery;
dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type);
#define ICE_EMP_RESET_SLEEP_MS 5000 if (reset_type == ICE_RESET_EMPR) { /* If an EMP reset has occurred, any previously pending flash * update will have completed. We no longer know whether or * not the NVM update EMP reset is restricted.
*/
pf->fw_emp_reset_disabled = false;
/* if DDP was previously loaded successfully */ if (!ice_is_safe_mode(pf)) { /* reload the SW DB of filter tables */ if (reset_type == ICE_RESET_PFR)
ice_fill_blk_tbls(hw); else /* Reload DDP Package after CORER/GLOBR reset */
ice_load_pkg(NULL, pf);
}
/* force guaranteed filter pool for PF */
ice_alloc_fd_guar_item(hw, &unused, guar); /* force shared filter pool for PF */
ice_alloc_fd_shrd_item(hw, &unused, b_effort);
}
}
if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
ice_dcb_rebuild(pf);
/* If the PF previously had enabled PTP, PTP init needs to happen before * the VSI rebuild. If not, this causes the PTP link status events to * fail.
*/ if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_rebuild(pf, reset_type);
if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_init(pf);
/* rebuild PF VSI */
err = ice_vsi_rebuild_by_type(pf, ICE_VSI_PF); if (err) {
dev_err(dev, "PF VSI rebuild failed: %d\n", err); goto err_vsi_rebuild;
}
if (reset_type == ICE_RESET_PFR) {
err = ice_rebuild_channels(pf); if (err) {
dev_err(dev, "failed to rebuild and replay ADQ VSIs, err %d\n",
err); goto err_vsi_rebuild;
}
}
/* If Flow Director is active */ if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
err = ice_vsi_rebuild_by_type(pf, ICE_VSI_CTRL); if (err) {
dev_err(dev, "control VSI rebuild failed: %d\n", err); goto err_vsi_rebuild;
}
/* replay HW Flow Director recipes */ if (hw->fdir_prof)
ice_fdir_replay_flows(hw);
/* replay Flow Director filters */
ice_fdir_replay_fltrs(pf);
ice_rebuild_arfs(pf);
}
if (vsi && vsi->netdev)
netif_device_attach(vsi->netdev);
ice_update_pf_netdev_link(pf);
/* tell the firmware we are up */
err = ice_send_version(pf); if (err) {
dev_err(dev, "Rebuild failed due to error sending driver version: %d\n",
err); goto err_vsi_rebuild;
}
ice_replay_post(hw);
/* if we get here, reset flow is successful */
clear_bit(ICE_RESET_FAILED, pf->state);
ice_health_clear(pf);
ice_plug_aux_dev(pf); if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG))
ice_lag_rebuild(pf);
/* Restore timestamp mode settings after VSI rebuild */
ice_ptp_restore_timestamp_mode(pf); return;
err_vsi_rebuild:
err_sched_init_port:
ice_sched_cleanup_all(hw);
err_init_ctrlq:
ice_shutdown_all_ctrlq(hw, false);
set_bit(ICE_RESET_FAILED, pf->state);
clear_recovery: /* set this bit in PF state to control service task scheduling */
set_bit(ICE_NEEDS_RESTART, pf->state);
dev_err(dev, "Rebuild failed, unload and reload driver\n");
}
/** * ice_change_mtu - NDO callback to change the MTU * @netdev: network interface device structure * @new_mtu: new value for maximum frame size * * Returns 0 on success, negative on failure
*/ int ice_change_mtu(struct net_device *netdev, int new_mtu)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; struct bpf_prog *prog;
u8 count = 0; int err = 0;
if (new_mtu == (int)netdev->mtu) {
netdev_warn(netdev, "MTU is already %u\n", netdev->mtu); return 0;
}
prog = vsi->xdp_prog; if (prog && !prog->aux->xdp_has_frags) { int frame_size = ice_max_xdp_frame_size(vsi);
if (new_mtu + ICE_ETH_PKT_HDR_PAD > frame_size) {
netdev_err(netdev, "max MTU for XDP usage is %d\n",
frame_size - ICE_ETH_PKT_HDR_PAD); return -EINVAL;
}
} elseif (test_bit(ICE_FLAG_LEGACY_RX, pf->flags)) { if (new_mtu + ICE_ETH_PKT_HDR_PAD > ICE_MAX_FRAME_LEGACY_RX) {
netdev_err(netdev, "Too big MTU for legacy-rx; Max is %d\n",
ICE_MAX_FRAME_LEGACY_RX - ICE_ETH_PKT_HDR_PAD); return -EINVAL;
}
}
/* if a reset is in progress, wait for some time for it to complete */ do { if (ice_is_reset_in_progress(pf->state)) {
count++;
usleep_range(1000, 2000);
} else { break;
}
} while (count < 100);
if (count == 100) {
netdev_err(netdev, "can't change MTU. Device is busy\n"); return -EBUSY;
}
WRITE_ONCE(netdev->mtu, (unsignedint)new_mtu);
err = ice_down_up(vsi); if (err) return err;
netdev_dbg(netdev, "changed MTU to %d\n", new_mtu);
set_bit(ICE_FLAG_MTU_CHANGED, pf->flags);
return err;
}
/** * ice_set_rss_lut - Set RSS LUT * @vsi: Pointer to VSI structure * @lut: Lookup table * @lut_size: Lookup table size * * Returns 0 on success, negative on failure
*/ int ice_set_rss_lut(struct ice_vsi *vsi, u8 *lut, u16 lut_size)
{ struct ice_aq_get_set_rss_lut_params params = {}; struct ice_hw *hw = &vsi->back->hw; int status;
status = ice_aq_set_rss_lut(hw, ¶ms); if (status)
dev_err(ice_pf_to_dev(vsi->back), "Cannot set RSS lut, err %d aq_err %s\n",
status, libie_aq_str(hw->adminq.sq_last_status));
return status;
}
/** * ice_set_rss_key - Set RSS key * @vsi: Pointer to the VSI structure * @seed: RSS hash seed * * Returns 0 on success, negative on failure
*/ int ice_set_rss_key(struct ice_vsi *vsi, u8 *seed)
{ struct ice_hw *hw = &vsi->back->hw; int status;
if (!seed) return -EINVAL;
status = ice_aq_set_rss_key(hw, vsi->idx, (struct ice_aqc_get_set_rss_keys *)seed); if (status)
dev_err(ice_pf_to_dev(vsi->back), "Cannot set RSS key, err %d aq_err %s\n",
status, libie_aq_str(hw->adminq.sq_last_status));
return status;
}
/** * ice_get_rss_lut - Get RSS LUT * @vsi: Pointer to VSI structure * @lut: Buffer to store the lookup table entries * @lut_size: Size of buffer to store the lookup table entries * * Returns 0 on success, negative on failure
*/ int ice_get_rss_lut(struct ice_vsi *vsi, u8 *lut, u16 lut_size)
{ struct ice_aq_get_set_rss_lut_params params = {}; struct ice_hw *hw = &vsi->back->hw; int status;
status = ice_aq_get_rss_lut(hw, ¶ms); if (status)
dev_err(ice_pf_to_dev(vsi->back), "Cannot get RSS lut, err %d aq_err %s\n",
status, libie_aq_str(hw->adminq.sq_last_status));
return status;
}
/** * ice_get_rss_key - Get RSS key * @vsi: Pointer to VSI structure * @seed: Buffer to store the key in * * Returns 0 on success, negative on failure
*/ int ice_get_rss_key(struct ice_vsi *vsi, u8 *seed)
{ struct ice_hw *hw = &vsi->back->hw; int status;
if (!seed) return -EINVAL;
status = ice_aq_get_rss_key(hw, vsi->idx, (struct ice_aqc_get_set_rss_keys *)seed); if (status)
dev_err(ice_pf_to_dev(vsi->back), "Cannot get RSS key, err %d aq_err %s\n",
status, libie_aq_str(hw->adminq.sq_last_status));
return status;
}
/** * ice_set_rss_hfunc - Set RSS HASH function * @vsi: Pointer to VSI structure * @hfunc: hash function (ICE_AQ_VSI_Q_OPT_RSS_*) * * Returns 0 on success, negative on failure
*/ int ice_set_rss_hfunc(struct ice_vsi *vsi, u8 hfunc)
{ struct ice_hw *hw = &vsi->back->hw; struct ice_vsi_ctx *ctx; bool symm; int err;
if (hfunc == vsi->rss_hfunc) return 0;
if (hfunc != ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ &&
hfunc != ICE_AQ_VSI_Q_OPT_RSS_HASH_SYM_TPLZ) return -EOPNOTSUPP;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM;
/** * ice_vsi_update_bridge_mode - Update VSI for switching bridge mode (VEB/VEPA) * @vsi: Pointer to VSI structure * @bmode: Hardware bridge mode (VEB/VEPA) * * Returns 0 on success, negative on failure
*/ staticint ice_vsi_update_bridge_mode(struct ice_vsi *vsi, u16 bmode)
{ struct ice_aqc_vsi_props *vsi_props; struct ice_hw *hw = &vsi->back->hw; struct ice_vsi_ctx *ctxt; int ret;
vsi_props = &vsi->info;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL); if (!ctxt) return -ENOMEM;
ctxt->info = vsi->info;
if (bmode == BRIDGE_MODE_VEB) /* change from VEPA to VEB mode */
ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB; else /* change from VEB to VEPA mode */
ctxt->info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL); if (ret) {
dev_err(ice_pf_to_dev(vsi->back), "update VSI for bridge mode failed, bmode = %d err %d aq_err %s\n",
bmode, ret, libie_aq_str(hw->adminq.sq_last_status)); goto out;
} /* Update sw flags for book keeping */
vsi_props->sw_flags = ctxt->info.sw_flags;
out:
kfree(ctxt); return ret;
}
/** * ice_bridge_setlink - Set the hardware bridge mode * @dev: the netdev being configured * @nlh: RTNL message * @flags: bridge setlink flags * @extack: netlink extended ack * * Sets the bridge mode (VEB/VEPA) of the switch to which the netdev (VSI) is * hooked up to. Iterates through the PF VSI list and sets the loopback mode (if * not already set for all VSIs connected to this switch. And also update the * unicast switch filter rules for the corresponding switch of the netdev.
*/ staticint
ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
u16 __always_unused flags, struct netlink_ext_ack __always_unused *extack)
{ struct ice_netdev_priv *np = netdev_priv(dev); struct ice_pf *pf = np->vsi->back; struct nlattr *attr, *br_spec; struct ice_hw *hw = &pf->hw; struct ice_sw *pf_sw; int rem, v, err = 0;
pf_sw = pf->first_sw; /* find the attribute in the netlink message */
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); if (!br_spec) return -EINVAL;
if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB) return -EINVAL; /* Continue if bridge mode is not being flipped */ if (mode == pf_sw->bridge_mode) continue; /* Iterates through the PF VSI list and update the loopback * mode of the VSI
*/
ice_for_each_vsi(pf, v) { if (!pf->vsi[v]) continue;
err = ice_vsi_update_bridge_mode(pf->vsi[v], mode); if (err) return err;
}
hw->evb_veb = (mode == BRIDGE_MODE_VEB); /* Update the unicast switch filter rules for the corresponding * switch of the netdev
*/
err = ice_update_sw_rule_bridge_mode(hw); if (err) {
netdev_err(dev, "switch rule update failed, mode = %d err %d aq_err %s\n",
mode, err,
libie_aq_str(hw->adminq.sq_last_status)); /* revert hw->evb_veb */
hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB); return err;
}
/* Check if PFC is enabled for the TC to which the queue belongs * to. If yes then Tx timeout is not caused by a hung queue, no * need to reset and rebuild
*/ if (ice_is_pfc_causing_hung_q(pf, txqueue)) {
dev_info(ice_pf_to_dev(pf), "Fake Tx hang detected on queue %u, timeout caused by PFC storm\n",
txqueue); return;
}
/* now that we have an index, find the tx_ring struct */
ice_for_each_txq(vsi, i) if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) if (txqueue == vsi->tx_rings[i]->q_index) {
tx_ring = vsi->tx_rings[i]; break;
}
/* Reset recovery level if enough time has elapsed after last timeout. * Also ensure no new reset action happens before next timeout period.
*/ if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ * 20)))
pf->tx_timeout_recovery_level = 1; elseif (time_before(jiffies, (pf->tx_timeout_last_recovery +
netdev->watchdog_timeo))) return;
/** * ice_setup_tc_cls_flower - flower classifier offloads * @np: net device to configure * @filter_dev: device on which filter is added * @cls_flower: offload data * @ingress: if the rule is added to an ingress block * * Return: 0 if the flower was successfully added or deleted, * negative error code otherwise.
*/ staticint
ice_setup_tc_cls_flower(struct ice_netdev_priv *np, struct net_device *filter_dev, struct flow_cls_offload *cls_flower, bool ingress)
{ struct ice_vsi *vsi = np->vsi;
if (cls_flower->common.chain_index) return -EOPNOTSUPP;
switch (cls_flower->command) { case FLOW_CLS_REPLACE: return ice_add_cls_flower(filter_dev, vsi, cls_flower, ingress); case FLOW_CLS_DESTROY: return ice_del_cls_flower(vsi, cls_flower); default: return -EINVAL;
}
}
/** * ice_setup_tc_block_cb_ingress - callback handler for ingress TC block * @type: TC SETUP type * @type_data: TC flower offload data that contains user input * @cb_priv: netdev private data * * Return: 0 if the setup was successful, negative error code otherwise.
*/ staticint
ice_setup_tc_block_cb_ingress(enum tc_setup_type type, void *type_data, void *cb_priv)
{ struct ice_netdev_priv *np = cb_priv;
/** * ice_validate_mqprio_qopt - Validate TCF input parameters * @vsi: Pointer to VSI * @mqprio_qopt: input parameters for mqprio queue configuration * * This function validates MQPRIO params, such as qcount (power of 2 wherever * needed), and make sure user doesn't specify qcount and BW rate limit * for TCs, which are more than "num_tc"
*/ staticint
ice_validate_mqprio_qopt(struct ice_vsi *vsi, struct tc_mqprio_qopt_offload *mqprio_qopt)
{ int non_power_of_2_qcount = 0; struct ice_pf *pf = vsi->back; int max_rss_q_cnt = 0;
u64 sum_min_rate = 0; struct device *dev; int i, speed;
u8 num_tc;
for (i = 0; num_tc; i++) { int qcount = mqprio_qopt->qopt.count[i];
u64 max_rate, min_rate, rem;
if (!qcount) return -EINVAL;
if (is_power_of_2(qcount)) { if (non_power_of_2_qcount &&
qcount > non_power_of_2_qcount) {
dev_err(dev, "qcount[%d] cannot be greater than non power of 2 qcount[%d]\n",
qcount, non_power_of_2_qcount); return -EINVAL;
} if (qcount > max_rss_q_cnt)
max_rss_q_cnt = qcount;
} else { if (non_power_of_2_qcount &&
qcount != non_power_of_2_qcount) {
dev_err(dev, "Only one non power of 2 qcount allowed[%d,%d]\n",
qcount, non_power_of_2_qcount); return -EINVAL;
} if (qcount < max_rss_q_cnt) {
dev_err(dev, "non power of 2 qcount[%d] cannot be less than other qcount[%d]\n",
qcount, max_rss_q_cnt); return -EINVAL;
}
max_rss_q_cnt = qcount;
non_power_of_2_qcount = qcount;
}
/* TC command takes input in K/N/Gbps or K/M/Gbit etc but * converts the bandwidth rate limit into Bytes/s when * passing it down to the driver. So convert input bandwidth * from Bytes/s to Kbps
*/
max_rate = mqprio_qopt->max_rate[i];
max_rate = div_u64(max_rate, ICE_BW_KBPS_DIVISOR);
/* min_rate is minimum guaranteed rate and it can't be zero */
min_rate = mqprio_qopt->min_rate[i];
min_rate = div_u64(min_rate, ICE_BW_KBPS_DIVISOR);
sum_min_rate += min_rate;
if (min_rate && min_rate < ICE_MIN_BW_LIMIT) {
dev_err(dev, "TC%d: min_rate(%llu Kbps) < %u Kbps\n", i,
min_rate, ICE_MIN_BW_LIMIT); return -EINVAL;
}
if (max_rate && max_rate > speed) {
dev_err(dev, "TC%d: max_rate(%llu Kbps) > link speed of %u Kbps\n",
i, max_rate, speed); return -EINVAL;
}
iter_div_u64_rem(min_rate, ICE_MIN_BW_LIMIT, &rem); if (rem) {
dev_err(dev, "TC%d: Min Rate not multiple of %u Kbps",
i, ICE_MIN_BW_LIMIT); return -EINVAL;
}
iter_div_u64_rem(max_rate, ICE_MIN_BW_LIMIT, &rem); if (rem) {
dev_err(dev, "TC%d: Max Rate not multiple of %u Kbps",
i, ICE_MIN_BW_LIMIT); return -EINVAL;
}
/* min_rate can't be more than max_rate, except when max_rate * is zero (implies max_rate sought is max line rate). In such * a case min_rate can be more than max.
*/ if (max_rate && min_rate > max_rate) {
dev_err(dev, "min_rate %llu Kbps can't be more than max_rate %llu Kbps\n",
min_rate, max_rate); return -EINVAL;
}
if (i >= mqprio_qopt->qopt.num_tc - 1) break; if (mqprio_qopt->qopt.offset[i + 1] !=
(mqprio_qopt->qopt.offset[i] + qcount)) return -EINVAL;
} if (vsi->num_rxq <
(mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) return -EINVAL; if (vsi->num_txq <
(mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) return -EINVAL;
/* make sure vsi->ch_rss_size is set correctly based on TC's qcount */
vsi->ch_rss_size = max_rss_q_cnt;
return 0;
}
/** * ice_add_vsi_to_fdir - add a VSI to the flow director group for PF * @pf: ptr to PF device * @vsi: ptr to VSI
*/ staticint ice_add_vsi_to_fdir(struct ice_pf *pf, struct ice_vsi *vsi)
{ struct device *dev = ice_pf_to_dev(pf); bool added = false; struct ice_hw *hw; int flow;
if (!(vsi->num_gfltr || vsi->num_bfltr)) return -EINVAL;
hw = &pf->hw; for (flow = 0; flow < ICE_FLTR_PTYPE_MAX; flow++) { struct ice_fd_hw_prof *prof; int tun, status;
u64 entry_h;
if (!(hw->fdir_prof && hw->fdir_prof[flow] &&
hw->fdir_prof[flow]->cnt)) continue;
for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) { enum ice_flow_priority prio;
/* add this VSI to FDir profile for this flow */
prio = ICE_FLOW_PRIO_NORMAL;
prof = hw->fdir_prof[flow];
status = ice_flow_add_entry(hw, ICE_BLK_FD,
prof->prof_id[tun],
prof->vsi_h[0], vsi->idx,
prio, prof->fdir_seg[tun],
&entry_h); if (status) {
dev_err(dev, "channel VSI idx %d, not able to add to group %d\n",
vsi->idx, flow); continue;
}
prof->entry_h[prof->cnt][tun] = entry_h;
}
/* store VSI for filter replay and delete */
prof->vsi_h[prof->cnt] = vsi->idx;
prof->cnt++;
added = true;
dev_dbg(dev, "VSI idx %d added to fdir group %d\n", vsi->idx,
flow);
}
if (!added)
dev_dbg(dev, "VSI idx %d not added to fdir groups\n", vsi->idx);
return 0;
}
/** * ice_add_channel - add a channel by adding VSI * @pf: ptr to PF device * @sw_id: underlying HW switching element ID * @ch: ptr to channel structure * * Add a channel (VSI) using add_vsi and queue_map
*/ staticint ice_add_channel(struct ice_pf *pf, u16 sw_id, struct ice_channel *ch)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_vsi *vsi;
if (ch->type != ICE_VSI_CHNL) {
dev_err(dev, "add new VSI failed, ch->type %d\n", ch->type); return -EINVAL;
}
vsi = ice_chnl_vsi_setup(pf, pf->hw.port_info, ch); if (!vsi || vsi->type != ICE_VSI_CHNL) {
dev_err(dev, "create chnl VSI failure\n"); return -EINVAL;
}
ice_add_vsi_to_fdir(pf, vsi);
ch->sw_id = sw_id;
ch->vsi_num = vsi->vsi_num;
ch->info.mapping_flags = vsi->info.mapping_flags;
ch->ch_vsi = vsi; /* set the back pointer of channel for newly created VSI */
vsi->ch = ch;
/** * ice_chnl_cfg_res * @vsi: the VSI being setup * @ch: ptr to channel structure * * Configure channel specific resources such as rings, vector.
*/ staticvoid ice_chnl_cfg_res(struct ice_vsi *vsi, struct ice_channel *ch)
{ int i;
for (i = 0; i < ch->num_txq; i++) { struct ice_q_vector *tx_q_vector, *rx_q_vector; struct ice_ring_container *rc; struct ice_tx_ring *tx_ring; struct ice_rx_ring *rx_ring;
/* setup ring being channel enabled */
tx_ring->ch = ch;
rx_ring->ch = ch;
/* following code block sets up vector specific attributes */
tx_q_vector = tx_ring->q_vector;
rx_q_vector = rx_ring->q_vector; if (!tx_q_vector && !rx_q_vector) continue;
if (tx_q_vector) {
tx_q_vector->ch = ch; /* setup Tx and Rx ITR setting if DIM is off */
rc = &tx_q_vector->tx; if (!ITR_IS_DYNAMIC(rc))
ice_write_itr(rc, rc->itr_setting);
} if (rx_q_vector) {
rx_q_vector->ch = ch; /* setup Tx and Rx ITR setting if DIM is off */
rc = &rx_q_vector->rx; if (!ITR_IS_DYNAMIC(rc))
ice_write_itr(rc, rc->itr_setting);
}
}
/* it is safe to assume that, if channel has non-zero num_t[r]xq, then * GLINT_ITR register would have written to perform in-context * update, hence perform flush
*/ if (ch->num_txq || ch->num_rxq)
ice_flush(&vsi->back->hw);
}
/** * ice_cfg_chnl_all_res - configure channel resources * @vsi: pte to main_vsi * @ch: ptr to channel structure * * This function configures channel specific resources such as flow-director * counter index, and other resources such as queues, vectors, ITR settings
*/ staticvoid
ice_cfg_chnl_all_res(struct ice_vsi *vsi, struct ice_channel *ch)
{ /* configure channel (aka ADQ) resources such as queues, vectors, * ITR settings for channel specific vectors and anything else
*/
ice_chnl_cfg_res(vsi, ch);
}
/** * ice_setup_hw_channel - setup new channel * @pf: ptr to PF device * @vsi: the VSI being setup * @ch: ptr to channel structure * @sw_id: underlying HW switching element ID * @type: type of channel to be created (VMDq2/VF) * * Setup new channel (VSI) based on specified type (VMDq2/VF) * and configures Tx rings accordingly
*/ staticint
ice_setup_hw_channel(struct ice_pf *pf, struct ice_vsi *vsi, struct ice_channel *ch, u16 sw_id, u8 type)
{ struct device *dev = ice_pf_to_dev(pf); int ret;
ch->base_q = vsi->next_base_q;
ch->type = type;
ret = ice_add_channel(pf, sw_id, ch); if (ret) {
dev_err(dev, "failed to add_channel using sw_id %u\n", sw_id); return ret;
}
/* configure/setup ADQ specific resources */
ice_cfg_chnl_all_res(vsi, ch);
/* make sure to update the next_base_q so that subsequent channel's * (aka ADQ) VSI queue map is correct
*/
vsi->next_base_q = vsi->next_base_q + ch->num_rxq;
dev_dbg(dev, "added channel: vsi_num %u, num_rxq %u\n", ch->vsi_num,
ch->num_rxq);
return 0;
}
/** * ice_setup_channel - setup new channel using uplink element * @pf: ptr to PF device * @vsi: the VSI being setup * @ch: ptr to channel structure * * Setup new channel (VSI) based on specified type (VMDq2/VF) * and uplink switching element
*/ staticbool
ice_setup_channel(struct ice_pf *pf, struct ice_vsi *vsi, struct ice_channel *ch)
{ struct device *dev = ice_pf_to_dev(pf);
u16 sw_id; int ret;
if (vsi->type != ICE_VSI_PF) {
dev_err(dev, "unsupported parent VSI type(%d)\n", vsi->type); returnfalse;
}
sw_id = pf->first_sw->sw_id;
/* create channel (VSI) */
ret = ice_setup_hw_channel(pf, vsi, ch, sw_id, ICE_VSI_CHNL); if (ret) {
dev_err(dev, "failed to setup hw_channel\n"); returnfalse;
}
dev_dbg(dev, "successfully created channel()\n");
return ch->ch_vsi ? true : false;
}
/** * ice_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate * @vsi: VSI to be configured * @max_tx_rate: max Tx rate in Kbps to be configured as maximum BW limit * @min_tx_rate: min Tx rate in Kbps to be configured as minimum BW limit
*/ staticint
ice_set_bw_limit(struct ice_vsi *vsi, u64 max_tx_rate, u64 min_tx_rate)
{ int err;
err = ice_set_min_bw_limit(vsi, min_tx_rate); if (err) return err;
return ice_set_max_bw_limit(vsi, max_tx_rate);
}
/** * ice_create_q_channel - function to create channel * @vsi: VSI to be configured * @ch: ptr to channel (it contains channel specific params) * * This function creates channel (VSI) using num_queues specified by user, * reconfigs RSS if needed.
*/ staticint ice_create_q_channel(struct ice_vsi *vsi, struct ice_channel *ch)
{ struct ice_pf *pf = vsi->back; struct device *dev;
if (!ch) return -EINVAL;
dev = ice_pf_to_dev(pf); if (!ch->num_txq || !ch->num_rxq) {
dev_err(dev, "Invalid num_queues requested: %d\n", ch->num_rxq); return -EINVAL;
}
if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_txq) {
dev_err(dev, "cnt_q_avail (%u) less than num_queues %d\n",
vsi->cnt_q_avail, ch->num_txq); return -EINVAL;
}
if (!ice_setup_channel(pf, vsi, ch)) {
dev_info(dev, "Failed to setup channel\n"); return -EINVAL;
} /* configure BW rate limit */ if (ch->ch_vsi && (ch->max_tx_rate || ch->min_tx_rate)) { int ret;
ret = ice_set_bw_limit(ch->ch_vsi, ch->max_tx_rate,
ch->min_tx_rate); if (ret)
dev_err(dev, "failed to set Tx rate of %llu Kbps for VSI(%u)\n",
ch->max_tx_rate, ch->ch_vsi->vsi_num); else
dev_dbg(dev, "set Tx rate of %llu Kbps for VSI(%u)\n",
ch->max_tx_rate, ch->ch_vsi->vsi_num);
}
vsi->cnt_q_avail -= ch->num_txq;
return 0;
}
/** * ice_rem_all_chnl_fltrs - removes all channel filters * @pf: ptr to PF, TC-flower based filter are tracked at PF level * * Remove all advanced switch filters only if they are channel specific * tc-flower based filter
*/ staticvoid ice_rem_all_chnl_fltrs(struct ice_pf *pf)
{ struct ice_tc_flower_fltr *fltr; struct hlist_node *node;
/* to remove all channel filters, iterate an ordered list of filters */
hlist_for_each_entry_safe(fltr, node,
&pf->tc_flower_fltr_list,
tc_flower_node) { struct ice_rule_query_data rule; int status;
/* for now process only channel specific filters */ if (!ice_is_chnl_fltr(fltr)) continue;
rule.rid = fltr->rid;
rule.rule_id = fltr->rule_id;
rule.vsi_handle = fltr->dest_vsi_handle;
status = ice_rem_adv_rule_by_id(&pf->hw, &rule); if (status) { if (status == -ENOENT)
dev_dbg(ice_pf_to_dev(pf), "TC flower filter (rule_id %u) does not exist\n",
rule.rule_id); else
dev_err(ice_pf_to_dev(pf), "failed to delete TC flower filter, status %d\n",
status);
} elseif (fltr->dest_vsi) { /* update advanced switch filter count */ if (fltr->dest_vsi->type == ICE_VSI_CHNL) {
u32 flags = fltr->flags;
fltr->dest_vsi->num_chnl_fltr--; if (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
ICE_TC_FLWR_FIELD_ENC_DST_MAC))
pf->num_dmac_chnl_fltrs--;
}
}
/* perform cleanup for channels if they exist */
list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) { struct ice_vsi *ch_vsi;
list_del(&ch->list);
ch_vsi = ch->ch_vsi; if (!ch_vsi) {
kfree(ch); continue;
}
/* Reset queue contexts */ for (i = 0; i < ch->num_rxq; i++) { struct ice_tx_ring *tx_ring; struct ice_rx_ring *rx_ring;
tx_ring = vsi->tx_rings[ch->base_q + i];
rx_ring = vsi->rx_rings[ch->base_q + i]; if (tx_ring) {
tx_ring->ch = NULL; if (tx_ring->q_vector)
tx_ring->q_vector->ch = NULL;
} if (rx_ring) {
rx_ring->ch = NULL; if (rx_ring->q_vector)
rx_ring->q_vector->ch = NULL;
}
}
/* Release FD resources for the channel VSI */
ice_fdir_rem_adq_chnl(&pf->hw, ch->ch_vsi->idx);
/* clear the VSI from scheduler tree */
ice_rm_vsi_lan_cfg(ch->ch_vsi->port_info, ch->ch_vsi->idx);
/* Delete VSI from FW, PF and HW VSI arrays */
ice_vsi_delete(ch->ch_vsi);
/* free the channel */
kfree(ch);
}
/* clear the channel VSI map which is stored in main VSI */
ice_for_each_chnl_tc(i)
vsi->tc_map_vsi[i] = NULL;
/* reset main VSI's all TC information */
vsi->all_enatc = 0;
vsi->all_numtc = 0;
}
/** * ice_rebuild_channels - rebuild channel * @pf: ptr to PF * * Recreate channel VSIs and replay filters
*/ staticint ice_rebuild_channels(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_vsi *main_vsi; bool rem_adv_fltr = true; struct ice_channel *ch; struct ice_vsi *vsi; int tc_idx = 1; int i, err;
main_vsi = ice_get_main_vsi(pf); if (!main_vsi) return 0;
if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) ||
main_vsi->old_numtc == 1) return 0; /* nothing to be done */
/* reconfigure main VSI based on old value of TC and cached values * for MQPRIO opts
*/
err = ice_vsi_cfg_tc(main_vsi, main_vsi->old_ena_tc); if (err) {
dev_err(dev, "failed configuring TC(ena_tc:0x%02x) for HW VSI=%u\n",
main_vsi->old_ena_tc, main_vsi->vsi_num); return err;
}
vsi = pf->vsi[i]; if (!vsi || vsi->type != ICE_VSI_CHNL) continue;
type = vsi->type;
/* rebuild ADQ VSI */
err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_INIT); if (err) {
dev_err(dev, "VSI (type:%s) at index %d rebuild failed, err %d\n",
ice_vsi_type_str(type), vsi->idx, err); goto cleanup;
}
/* Re-map HW VSI number, using VSI handle that has been * previously validated in ice_replay_vsi() call above
*/
vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
/* replay filters for the VSI */
err = ice_replay_vsi(&pf->hw, vsi->idx); if (err) {
dev_err(dev, "VSI (type:%s) replay failed, err %d, VSI index %d\n",
ice_vsi_type_str(type), err, vsi->idx);
rem_adv_fltr = false; goto cleanup;
}
dev_info(dev, "VSI (type:%s) at index %d rebuilt successfully\n",
ice_vsi_type_str(type), vsi->idx);
/* store ADQ VSI at correct TC index in main VSI's * map of TC to VSI
*/
main_vsi->tc_map_vsi[tc_idx++] = vsi;
}
/* ADQ VSI(s) has been rebuilt successfully, so setup * channel for main VSI's Tx and Rx rings
*/
list_for_each_entry(ch, &main_vsi->ch_list, list) { struct ice_vsi *ch_vsi;
/** * ice_create_q_channels - Add queue channel for the given TCs * @vsi: VSI to be configured * * Configures queue channel mapping to the given TCs
*/ staticint ice_create_q_channels(struct ice_vsi *vsi)
{ struct ice_pf *pf = vsi->back; struct ice_channel *ch; int ret = 0, i;
ice_for_each_chnl_tc(i) { if (!(vsi->all_enatc & BIT(i))) continue;
ret = ice_validate_mqprio_qopt(vsi, mqprio_qopt); if (ret) {
netdev_err(netdev, "failed to validate_mqprio_qopt(), ret %d\n",
ret); return ret;
}
memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
set_bit(ICE_FLAG_TC_MQPRIO, pf->flags); /* don't assume state of hw_tc_offload during driver load * and set the flag for TC flower filter if hw_tc_offload * already ON
*/ if (vsi->netdev->features & NETIF_F_HW_TC)
set_bit(ICE_FLAG_CLS_FLOWER, pf->flags); break; default: return -EINVAL;
}
config_tcf:
/* Requesting same TCF configuration as already enabled */ if (ena_tc_qdisc == vsi->tc_cfg.ena_tc &&
mode != TC_MQPRIO_MODE_CHANNEL) return 0;
/* Pause VSI queues */
ice_dis_vsi(vsi, true);
if (!hw && !test_bit(ICE_FLAG_TC_MQPRIO, pf->flags))
ice_remove_q_channels(vsi, true);
if (!hw && !test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) {
vsi->req_txq = min_t(int, ice_get_avail_txq_count(pf),
num_online_cpus());
vsi->req_rxq = min_t(int, ice_get_avail_rxq_count(pf),
num_online_cpus());
} else { /* logic to rebuild VSI, same like ethtool -L */
u16 offset = 0, qcount_tx = 0, qcount_rx = 0;
for (i = 0; i < num_tcf; i++) { if (!(ena_tc_qdisc & BIT(i))) continue;
/* store away original rss_size info, so that it gets reused * form ice_vsi_rebuild during tc-qdisc delete stage - to * determine, what should be the rss_sizefor main VSI
*/
vsi->orig_rss_size = vsi->rss_size;
}
/* save current values of Tx and Rx queues before calling VSI rebuild * for fallback option
*/
cur_txq = vsi->num_txq;
cur_rxq = vsi->num_rxq;
/* proceed with rebuild main VSI using correct number of queues */
ret = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT); if (ret) { /* fallback to current number of queues */
dev_info(dev, "Rebuild failed with new queues, try with current number of queues\n");
vsi->req_txq = cur_txq;
vsi->req_rxq = cur_rxq;
clear_bit(ICE_RESET_FAILED, pf->state); if (ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT)) {
dev_err(dev, "Rebuild of main VSI failed again\n"); return ret;
}
}
vsi->all_numtc = num_tcf;
vsi->all_enatc = ena_tc_qdisc;
ret = ice_vsi_cfg_tc(vsi, ena_tc_qdisc); if (ret) {
netdev_err(netdev, "failed configuring TC for VSI id=%d\n",
vsi->vsi_num); gotoexit;
}
/* set TC0 rate limit if specified */ if (max_tx_rate || min_tx_rate) { /* convert to Kbits/s */ if (max_tx_rate)
max_tx_rate = div_u64(max_tx_rate, ICE_BW_KBPS_DIVISOR); if (min_tx_rate)
min_tx_rate = div_u64(min_tx_rate, ICE_BW_KBPS_DIVISOR);
ret = ice_set_bw_limit(vsi, max_tx_rate, min_tx_rate); if (!ret) {
dev_dbg(dev, "set Tx rate max %llu min %llu for VSI(%u)\n",
max_tx_rate, min_tx_rate, vsi->vsi_num);
} else {
dev_err(dev, "failed to set Tx rate max %llu min %llu for VSI(%u)\n",
max_tx_rate, min_tx_rate, vsi->vsi_num); gotoexit;
}
}
ret = ice_create_q_channels(vsi); if (ret) {
netdev_err(netdev, "failed configuring queue channels\n"); gotoexit;
} else {
netdev_dbg(netdev, "successfully configured channels\n");
}
}
if (vsi->ch_rss_size)
ice_vsi_cfg_rss_lut_key(vsi);
exit: /* if error, reset the all_numtc and all_enatc */ if (ret) {
vsi->all_numtc = 0;
vsi->all_enatc = 0;
} /* resume VSI */
ice_ena_vsi(vsi, true);
/** * ice_open - Called when a network interface becomes active * @netdev: network interface device structure * * The open entry point is called when a network interface is made * active by the system (IFF_UP). At this point all resources needed * for transmit and receive operations are allocated, the interrupt * handler is registered with the OS, the netdev watchdog is enabled, * and the stack is notified that the interface is ready. * * Returns 0 on success, negative value on failure
*/ int ice_open(struct net_device *netdev)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_pf *pf = np->vsi->back;
if (ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't open net device while reset is in progress"); return -EBUSY;
}
return ice_open_internal(netdev);
}
/** * ice_open_internal - Called when a network interface becomes active * @netdev: network interface device structure * * Internal ice_open implementation. Should not be used directly except for ice_open and reset * handling routine * * Returns 0 on success, negative value on failure
*/ int ice_open_internal(struct net_device *netdev)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; struct ice_port_info *pi; int err;
if (test_bit(ICE_NEEDS_RESTART, pf->state)) {
netdev_err(netdev, "driver needs to be unloaded and reloaded\n"); return -EIO;
}
netif_carrier_off(netdev);
pi = vsi->port_info;
err = ice_update_link_info(pi); if (err) {
netdev_err(netdev, "Failed to get link info, error %d\n", err); return err;
}
/* Set PHY if there is media, otherwise, turn off PHY */ if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
clear_bit(ICE_FLAG_NO_MEDIA, pf->flags); if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state)) {
err = ice_init_phy_user_cfg(pi); if (err) {
netdev_err(netdev, "Failed to initialize PHY settings, error %d\n",
err); return err;
}
}
err = ice_configure_phy(vsi); if (err) {
netdev_err(netdev, "Failed to set physical link up, error %d\n",
err); return err;
}
} else {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
ice_set_link(vsi, false);
}
err = ice_vsi_open(vsi); if (err)
netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id);
/* Update existing tunnels information */
udp_tunnel_get_rx_info(netdev);
return err;
}
/** * ice_stop - Disables a network interface * @netdev: network interface device structure * * The stop entry point is called when an interface is de-activated by the OS, * and the netdevice enters the DOWN state. The hardware is still under the * driver's control, but the netdev interface is disabled. * * Returns success only - not allowed to fail
*/ int ice_stop(struct net_device *netdev)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back;
if (ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't stop net device while reset is in progress"); return -EBUSY;
}
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) { int link_err = ice_force_phys_link_state(vsi, false);
if (link_err) { if (link_err == -ENOMEDIUM)
netdev_info(vsi->netdev, "Skipping link reconfig - no media attached, VSI %d\n",
vsi->vsi_num); else
netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
vsi->vsi_num, link_err);
ice_vsi_close(vsi); return -EIO;
}
}
ice_vsi_close(vsi);
return 0;
}
/** * ice_features_check - Validate encapsulated packet conforms to limits * @skb: skb buffer * @netdev: This port's netdev * @features: Offload features that the stack believes apply
*/ static netdev_features_t
ice_features_check(struct sk_buff *skb, struct net_device __always_unused *netdev,
netdev_features_t features)
{ bool gso = skb_is_gso(skb);
size_t len;
/* No point in doing any of this if neither checksum nor GSO are * being requested for this frame. We can rule out both by just * checking for CHECKSUM_PARTIAL
*/ if (skb->ip_summed != CHECKSUM_PARTIAL) return features;
/* We cannot support GSO if the MSS is going to be less than * 64 bytes. If it is then we need to drop support for GSO.
*/ if (gso && (skb_shinfo(skb)->gso_size < ICE_TXD_CTX_MIN_MSS))
features &= ~NETIF_F_GSO_MASK;
len = skb_network_offset(skb); if (len > ICE_TXD_MACLEN_MAX || len & 0x1) goto out_rm_features;
len = skb_network_header_len(skb); if (len > ICE_TXD_IPLEN_MAX || len & 0x1) goto out_rm_features;
if (skb->encapsulation) { /* this must work for VXLAN frames AND IPIP/SIT frames, and in * the case of IPIP frames, the transport header pointer is * after the inner header! So check to make sure that this * is a GRE or UDP_TUNNEL frame before doing that math.
*/ if (gso && (skb_shinfo(skb)->gso_type &
(SKB_GSO_GRE | SKB_GSO_UDP_TUNNEL))) {
len = skb_inner_network_header(skb) -
skb_transport_header(skb); if (len > ICE_TXD_L4LEN_MAX || len & 0x1) goto out_rm_features;
}
len = skb_inner_network_header_len(skb); if (len > ICE_TXD_IPLEN_MAX || len & 0x1) goto out_rm_features;
}
return features;
out_rm_features: return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
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