#include"iavf.h" #include"iavf_ptp.h" #include"iavf_prototype.h" /* All iavf tracepoints are defined by the include below, which must * be included exactly once across the whole kernel with * CREATE_TRACE_POINTS defined
*/ #define CREATE_TRACE_POINTS #include"iavf_trace.h"
int iavf_status_to_errno(enum iavf_status status)
{ switch (status) { case IAVF_SUCCESS: return 0; case IAVF_ERR_PARAM: case IAVF_ERR_MAC_TYPE: case IAVF_ERR_INVALID_MAC_ADDR: case IAVF_ERR_INVALID_LINK_SETTINGS: case IAVF_ERR_INVALID_PD_ID: case IAVF_ERR_INVALID_QP_ID: case IAVF_ERR_INVALID_CQ_ID: case IAVF_ERR_INVALID_CEQ_ID: case IAVF_ERR_INVALID_AEQ_ID: case IAVF_ERR_INVALID_SIZE: case IAVF_ERR_INVALID_ARP_INDEX: case IAVF_ERR_INVALID_FPM_FUNC_ID: case IAVF_ERR_QP_INVALID_MSG_SIZE: case IAVF_ERR_INVALID_FRAG_COUNT: case IAVF_ERR_INVALID_ALIGNMENT: case IAVF_ERR_INVALID_PUSH_PAGE_INDEX: case IAVF_ERR_INVALID_IMM_DATA_SIZE: case IAVF_ERR_INVALID_VF_ID: case IAVF_ERR_INVALID_HMCFN_ID: case IAVF_ERR_INVALID_PBLE_INDEX: case IAVF_ERR_INVALID_SD_INDEX: case IAVF_ERR_INVALID_PAGE_DESC_INDEX: case IAVF_ERR_INVALID_SD_TYPE: case IAVF_ERR_INVALID_HMC_OBJ_INDEX: case IAVF_ERR_INVALID_HMC_OBJ_COUNT: case IAVF_ERR_INVALID_SRQ_ARM_LIMIT: return -EINVAL; case IAVF_ERR_NVM: case IAVF_ERR_NVM_CHECKSUM: case IAVF_ERR_PHY: case IAVF_ERR_CONFIG: case IAVF_ERR_UNKNOWN_PHY: case IAVF_ERR_LINK_SETUP: case IAVF_ERR_ADAPTER_STOPPED: case IAVF_ERR_PRIMARY_REQUESTS_PENDING: case IAVF_ERR_AUTONEG_NOT_COMPLETE: case IAVF_ERR_RESET_FAILED: case IAVF_ERR_BAD_PTR: case IAVF_ERR_SWFW_SYNC: case IAVF_ERR_QP_TOOMANY_WRS_POSTED: case IAVF_ERR_QUEUE_EMPTY: case IAVF_ERR_FLUSHED_QUEUE: case IAVF_ERR_OPCODE_MISMATCH: case IAVF_ERR_CQP_COMPL_ERROR: case IAVF_ERR_BACKING_PAGE_ERROR: case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE: case IAVF_ERR_MEMCPY_FAILED: case IAVF_ERR_SRQ_ENABLED: case IAVF_ERR_ADMIN_QUEUE_ERROR: case IAVF_ERR_ADMIN_QUEUE_FULL: case IAVF_ERR_BAD_RDMA_CQE: case IAVF_ERR_NVM_BLANK_MODE: case IAVF_ERR_PE_DOORBELL_NOT_ENABLED: case IAVF_ERR_DIAG_TEST_FAILED: case IAVF_ERR_FIRMWARE_API_VERSION: case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR: return -EIO; case IAVF_ERR_DEVICE_NOT_SUPPORTED: return -ENODEV; case IAVF_ERR_NO_AVAILABLE_VSI: case IAVF_ERR_RING_FULL: return -ENOSPC; case IAVF_ERR_NO_MEMORY: return -ENOMEM; case IAVF_ERR_TIMEOUT: case IAVF_ERR_ADMIN_QUEUE_TIMEOUT: return -ETIMEDOUT; case IAVF_ERR_NOT_IMPLEMENTED: case IAVF_NOT_SUPPORTED: return -EOPNOTSUPP; case IAVF_ERR_ADMIN_QUEUE_NO_WORK: return -EALREADY; case IAVF_ERR_NOT_READY: return -EBUSY; case IAVF_ERR_BUF_TOO_SHORT: return -EMSGSIZE;
}
return -EIO;
}
int virtchnl_status_to_errno(enum virtchnl_status_code v_status)
{ switch (v_status) { case VIRTCHNL_STATUS_SUCCESS: return 0; case VIRTCHNL_STATUS_ERR_PARAM: case VIRTCHNL_STATUS_ERR_INVALID_VF_ID: return -EINVAL; case VIRTCHNL_STATUS_ERR_NO_MEMORY: return -ENOMEM; case VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH: case VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR: case VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR: return -EIO; case VIRTCHNL_STATUS_ERR_NOT_SUPPORTED: return -EOPNOTSUPP;
}
return -EIO;
}
/** * iavf_pdev_to_adapter - go from pci_dev to adapter * @pdev: pci_dev pointer
*/ staticstruct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev)
{ return netdev_priv(pci_get_drvdata(pdev));
}
/** * iavf_is_reset_in_progress - Check if a reset is in progress * @adapter: board private structure
*/ staticbool iavf_is_reset_in_progress(struct iavf_adapter *adapter)
{ if (adapter->state == __IAVF_RESETTING ||
adapter->flags & (IAVF_FLAG_RESET_PENDING |
IAVF_FLAG_RESET_NEEDED)) returntrue;
returnfalse;
}
/** * iavf_wait_for_reset - Wait for reset to finish. * @adapter: board private structure * * Returns 0 if reset finished successfully, negative on timeout or interrupt.
*/ int iavf_wait_for_reset(struct iavf_adapter *adapter)
{ int ret = wait_event_interruptible_timeout(adapter->reset_waitqueue,
!iavf_is_reset_in_progress(adapter),
msecs_to_jiffies(5000));
/* If ret < 0 then it means wait was interrupted. * If ret == 0 then it means we got a timeout while waiting * for reset to finish. * If ret > 0 it means reset has finished.
*/ if (ret > 0) return 0; elseif (ret < 0) return -EINTR; else return -EBUSY;
}
/** * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code * @hw: pointer to the HW structure * @mem: ptr to mem struct to fill out * @size: size of memory requested * @alignment: what to align the allocation to
**/ enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw, struct iavf_dma_mem *mem,
u64 size, u32 alignment)
{ struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;
/** * iavf_map_rings_to_vectors - Maps descriptor rings to vectors * @adapter: board private structure to initialize * * This function maps descriptor rings to the queue-specific vectors * we were allotted through the MSI-X enabling code. Ideally, we'd have * one vector per ring/queue, but on a constrained vector budget, we * group the rings as "efficiently" as possible. You would add new * mapping configurations in here.
**/ staticvoid iavf_map_rings_to_vectors(struct iavf_adapter *adapter)
{ int rings_remaining = adapter->num_active_queues; int ridx = 0, vidx = 0; int q_vectors;
/* In the case where we have more queues than vectors, continue * round-robin on vectors until all queues are mapped.
*/ if (++vidx >= q_vectors)
vidx = 0;
}
/** * iavf_request_misc_irq - Initialize MSI-X interrupts * @adapter: board private structure * * Allocates MSI-X vector 0 and requests interrupts from the kernel. This * vector is only for the admin queue, and stays active even when the netdev * is closed.
**/ staticint iavf_request_misc_irq(struct iavf_adapter *adapter)
{ struct net_device *netdev = adapter->netdev; int err;
/** * iavf_configure_tx - Configure Transmit Unit after Reset * @adapter: board private structure * * Configure the Tx unit of the MAC after a reset.
**/ staticvoid iavf_configure_tx(struct iavf_adapter *adapter)
{ struct iavf_hw *hw = &adapter->hw; int i;
for (i = 0; i < adapter->num_active_queues; i++)
adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i);
}
/** * iavf_select_rx_desc_format - Select Rx descriptor format * @adapter: adapter private structure * * Select what Rx descriptor format based on availability and enabled * features. * * Return: the desired RXDID to select for a given Rx queue, as defined by * enum virtchnl_rxdid_format.
*/ static u8 iavf_select_rx_desc_format(conststruct iavf_adapter *adapter)
{
u64 rxdids = adapter->supp_rxdids;
/* If we did not negotiate VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, we must * stick with the default value of the legacy 32 byte format.
*/ if (!IAVF_RXDID_ALLOWED(adapter)) return VIRTCHNL_RXDID_1_32B_BASE;
/* Rx timestamping requires the use of flexible NIC descriptors */ if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_RX_TSTAMP)) { if (rxdids & BIT(VIRTCHNL_RXDID_2_FLEX_SQ_NIC)) return VIRTCHNL_RXDID_2_FLEX_SQ_NIC;
pci_warn(adapter->pdev, "Unable to negotiate flexible descriptor format\n");
}
/* Warn if the PF does not list support for the default legacy * descriptor format. This shouldn't happen, as this is the format * used if VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC is not supported. It is * likely caused by a bug in the PF implementation failing to indicate * support for the format.
*/ if (!(rxdids & VIRTCHNL_RXDID_1_32B_BASE_M))
netdev_warn(adapter->netdev, "PF does not list support for default Rx descriptor format\n");
return VIRTCHNL_RXDID_1_32B_BASE;
}
/** * iavf_configure_rx - Configure Receive Unit after Reset * @adapter: board private structure * * Configure the Rx unit of the MAC after a reset.
**/ staticvoid iavf_configure_rx(struct iavf_adapter *adapter)
{ struct iavf_hw *hw = &adapter->hw;
for (u32 i = 0; i < adapter->num_active_queues; i++) {
adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i);
adapter->rx_rings[i].rxdid = adapter->rxdid;
}
}
/** * iavf_find_vlan - Search filter list for specific vlan filter * @adapter: board private structure * @vlan: vlan tag * * Returns ptr to the filter object or NULL. Must be called while holding the * mac_vlan_list_lock.
**/ staticstruct
iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
{ struct iavf_vlan_filter *f;
/** * iavf_add_vlan - Add a vlan filter to the list * @adapter: board private structure * @vlan: VLAN tag * * Returns ptr to the filter object or NULL when no memory available.
**/ staticstruct
iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
{ struct iavf_vlan_filter *f = NULL;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_vlan(adapter, vlan); if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC); if (!f) goto clearout;
f->vlan = vlan;
list_add_tail(&f->list, &adapter->vlan_filter_list);
f->state = IAVF_VLAN_ADD;
adapter->num_vlan_filters++;
iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_VLAN_FILTER);
} elseif (f->state == IAVF_VLAN_REMOVE) { /* IAVF_VLAN_REMOVE means that VLAN wasn't yet removed. * We can safely only change the state here.
*/
f->state = IAVF_VLAN_ACTIVE;
}
/** * iavf_del_vlan - Remove a vlan filter from the list * @adapter: board private structure * @vlan: VLAN tag
**/ staticvoid iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
{ struct iavf_vlan_filter *f;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_vlan(adapter, vlan); if (f) { /* IAVF_ADD_VLAN means that VLAN wasn't even added yet. * Remove it from the list.
*/ if (f->state == IAVF_VLAN_ADD) {
list_del(&f->list);
kfree(f);
adapter->num_vlan_filters--;
} else {
f->state = IAVF_VLAN_REMOVE;
iavf_schedule_aq_request(adapter,
IAVF_FLAG_AQ_DEL_VLAN_FILTER);
}
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
}
/** * iavf_restore_filters * @adapter: board private structure * * Restore existing non MAC filters when VF netdev comes back up
**/ staticvoid iavf_restore_filters(struct iavf_adapter *adapter)
{ struct iavf_vlan_filter *f;
/* re-add all VLAN filters */
spin_lock_bh(&adapter->mac_vlan_list_lock);
/** * iavf_get_num_vlans_added - get number of VLANs added * @adapter: board private structure
*/
u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
{ return adapter->num_vlan_filters;
}
/** * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF * @adapter: board private structure * * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN, * do not impose a limit as that maintains current behavior and for * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF.
**/ static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter)
{ /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has * never been a limit on the VF driver side
*/ if (VLAN_ALLOWED(adapter)) return VLAN_N_VID; elseif (VLAN_V2_ALLOWED(adapter)) return adapter->vlan_v2_caps.filtering.max_filters;
return 0;
}
/** * iavf_max_vlans_added - check if maximum VLANs allowed already exist * @adapter: board private structure
**/ staticbool iavf_max_vlans_added(struct iavf_adapter *adapter)
{ if (iavf_get_num_vlans_added(adapter) <
iavf_get_max_vlans_allowed(adapter)) returnfalse;
returntrue;
}
/** * iavf_vlan_rx_add_vid - Add a VLAN filter to a device * @netdev: network device struct * @proto: unused protocol data * @vid: VLAN tag
**/ staticint iavf_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
/* Do not track VLAN 0 filter, always added by the PF on VF init */ if (!vid) return 0;
if (!VLAN_FILTERING_ALLOWED(adapter)) return -EIO;
if (iavf_max_vlans_added(adapter)) {
netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n",
iavf_get_max_vlans_allowed(adapter)); return -EIO;
}
if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)))) return -ENOMEM;
return 0;
}
/** * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device * @netdev: network device struct * @proto: unused protocol data * @vid: VLAN tag
**/ staticint iavf_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
/* We do not track VLAN 0 filter */ if (!vid) return 0;
/** * iavf_find_filter - Search filter list for specific mac filter * @adapter: board private structure * @macaddr: the MAC address * * Returns ptr to the filter object or NULL. Must be called while holding the * mac_vlan_list_lock.
**/ staticstruct
iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter, const u8 *macaddr)
{ struct iavf_mac_filter *f;
/** * iavf_add_filter - Add a mac filter to the filter list * @adapter: board private structure * @macaddr: the MAC address * * Returns ptr to the filter object or NULL when no memory available.
**/ struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, const u8 *macaddr)
{ struct iavf_mac_filter *f;
if (!macaddr) return NULL;
f = iavf_find_filter(adapter, macaddr); if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC); if (!f) return f;
/** * iavf_replace_primary_mac - Replace current primary address * @adapter: board private structure * @new_mac: new MAC address to be applied * * Replace current dev_addr and send request to PF for removal of previous * primary MAC address filter and addition of new primary MAC filter. * Return 0 for success, -ENOMEM for failure. * * Do not call this with mac_vlan_list_lock!
**/ staticint iavf_replace_primary_mac(struct iavf_adapter *adapter, const u8 *new_mac)
{ struct iavf_hw *hw = &adapter->hw; struct iavf_mac_filter *new_f; struct iavf_mac_filter *old_f;
old_f = iavf_find_filter(adapter, hw->mac.addr); if (old_f) {
old_f->is_primary = false;
old_f->remove = true;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
} /* Always send the request to add if changing primary MAC, * even if filter is already present on the list
*/
new_f->is_primary = true;
new_f->add = true;
ether_addr_copy(hw->mac.addr, new_mac);
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* schedule the watchdog task to immediately process the request */
iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_MAC_FILTER); return 0;
}
/** * iavf_is_mac_set_handled - wait for a response to set MAC from PF * @netdev: network interface device structure * @macaddr: MAC address to set * * Returns true on success, false on failure
*/ staticbool iavf_is_mac_set_handled(struct net_device *netdev, const u8 *macaddr)
{ struct iavf_adapter *adapter = netdev_priv(netdev); struct iavf_mac_filter *f; bool ret = false;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_filter(adapter, macaddr);
if (!f || (!f->add && f->add_handled))
ret = true;
spin_unlock_bh(&adapter->mac_vlan_list_lock);
return ret;
}
/** * iavf_set_mac - NDO callback to set port MAC address * @netdev: network interface device structure * @p: pointer to an address structure * * Returns 0 on success, negative on failure
*/ staticint iavf_set_mac(struct net_device *netdev, void *p)
{ struct iavf_adapter *adapter = netdev_priv(netdev); struct sockaddr *addr = p; int ret;
if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL;
ret = iavf_replace_primary_mac(adapter, addr->sa_data);
if (ret) return ret;
ret = wait_event_interruptible_timeout(adapter->vc_waitqueue,
iavf_is_mac_set_handled(netdev, addr->sa_data),
msecs_to_jiffies(2500));
/* If ret < 0 then it means wait was interrupted. * If ret == 0 then it means we got a timeout. * else it means we got response for set MAC from PF, * check if netdev MAC was updated to requested MAC, * if yes then set MAC succeeded otherwise it failed return -EACCES
*/ if (ret < 0) return ret;
if (!ret) return -EAGAIN;
if (!ether_addr_equal(netdev->dev_addr, addr->sa_data)) return -EACCES;
return 0;
}
/** * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address * @netdev: the netdevice * @addr: address to add * * Called by __dev_(mc|uc)_sync when an address needs to be added. We call * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
*/ staticint iavf_addr_sync(struct net_device *netdev, const u8 *addr)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
if (iavf_add_filter(adapter, addr)) return 0; else return -ENOMEM;
}
/** * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address * @netdev: the netdevice * @addr: address to add * * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
*/ staticint iavf_addr_unsync(struct net_device *netdev, const u8 *addr)
{ struct iavf_adapter *adapter = netdev_priv(netdev); struct iavf_mac_filter *f;
/* 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/VLAN 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;
f = iavf_find_filter(adapter, addr); if (f) {
f->remove = true;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
} return 0;
}
/** * iavf_up_complete - Finish the last steps of bringing up a connection * @adapter: board private structure
*/ staticvoid iavf_up_complete(struct iavf_adapter *adapter)
{
netdev_assert_locked(adapter->netdev);
/** * iavf_clear_mac_vlan_filters - Remove mac and vlan filters not sent to PF * yet and mark other to be removed. * @adapter: board private structure
**/ staticvoid iavf_clear_mac_vlan_filters(struct iavf_adapter *adapter)
{ struct iavf_vlan_filter *vlf, *vlftmp; struct iavf_mac_filter *f, *ftmp;
spin_lock_bh(&adapter->mac_vlan_list_lock); /* clear the sync flag on all filters */
__dev_uc_unsync(adapter->netdev, NULL);
__dev_mc_unsync(adapter->netdev, NULL);
/* remove all MAC filters */
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list,
list) { if (f->add) {
list_del(&f->list);
kfree(f);
} else {
f->remove = true;
}
}
/** * iavf_clear_cloud_filters - Remove cloud filters not sent to PF yet and * mark other to be removed. * @adapter: board private structure
**/ staticvoid iavf_clear_cloud_filters(struct iavf_adapter *adapter)
{ struct iavf_cloud_filter *cf, *cftmp;
/** * iavf_clear_fdir_filters - Remove fdir filters not sent to PF yet and mark * other to be removed. * @adapter: board private structure
**/ staticvoid iavf_clear_fdir_filters(struct iavf_adapter *adapter)
{ struct iavf_fdir_fltr *fdir;
/* remove all Flow Director filters */
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry(fdir, &adapter->fdir_list_head, list) { if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST) { /* Cancel a request, keep filter as inactive */
fdir->state = IAVF_FDIR_FLTR_INACTIVE;
} elseif (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING ||
fdir->state == IAVF_FDIR_FLTR_ACTIVE) { /* Disable filters which are active or have a pending * request to PF to be added
*/
fdir->state = IAVF_FDIR_FLTR_DIS_REQUEST;
}
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
}
/** * iavf_clear_adv_rss_conf - Remove adv rss conf not sent to PF yet and mark * other to be removed. * @adapter: board private structure
**/ staticvoid iavf_clear_adv_rss_conf(struct iavf_adapter *adapter)
{ struct iavf_adv_rss *rss, *rsstmp;
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) return;
if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { /* cancel any current operation */
adapter->current_op = VIRTCHNL_OP_UNKNOWN; /* Schedule operations to close down the HW. Don't wait * here for this to complete. The watchdog is still running * and it will take care of this.
*/ if (!list_empty(&adapter->mac_filter_list))
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; if (!list_empty(&adapter->vlan_filter_list))
adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; if (!list_empty(&adapter->cloud_filter_list))
adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; if (!list_empty(&adapter->fdir_list_head))
adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; if (!list_empty(&adapter->adv_rss_list_head))
adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG;
}
/** * iavf_acquire_msix_vectors - Setup the MSIX capability * @adapter: board private structure * @vectors: number of vectors to request * * Work with the OS to set up the MSIX vectors needed. * * Returns 0 on success, negative on failure
**/ staticint
iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors)
{ int err, vector_threshold;
/* We'll want at least 3 (vector_threshold): * 0) Other (Admin Queue and link, mostly) * 1) TxQ[0] Cleanup * 2) RxQ[0] Cleanup
*/
vector_threshold = MIN_MSIX_COUNT;
/* The more we get, the more we will assign to Tx/Rx Cleanup * for the separate queues...where Rx Cleanup >= Tx Cleanup. * Right now, we simply care about how many we'll get; we'll * set them up later while requesting irq's.
*/
err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
vector_threshold, vectors); if (err < 0) {
dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
kfree(adapter->msix_entries);
adapter->msix_entries = NULL; return err;
}
/* Adjust for only the vectors we'll use, which is minimum * of max_msix_q_vectors + NONQ_VECS, or the number of * vectors we were allocated.
*/
adapter->num_msix_vectors = err; return 0;
}
/** * iavf_free_queues - Free memory for all rings * @adapter: board private structure to initialize * * Free all of the memory associated with queue pairs.
**/ staticvoid iavf_free_queues(struct iavf_adapter *adapter)
{ if (!adapter->vsi_res) return;
adapter->num_active_queues = 0;
kfree(adapter->tx_rings);
adapter->tx_rings = NULL;
kfree(adapter->rx_rings);
adapter->rx_rings = NULL;
}
/** * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload * @adapter: board private structure * * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or * stripped in certain descriptor fields. Instead of checking the offload * capability bits in the hot path, cache the location the ring specific * flags.
*/ void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter)
{ int i;
for (i = 0; i < adapter->num_active_queues; i++) { struct iavf_ring *tx_ring = &adapter->tx_rings[i]; struct iavf_ring *rx_ring = &adapter->rx_rings[i];
/* prevent multiple L2TAG bits being set after VFR */
tx_ring->flags &=
~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2);
rx_ring->flags &=
~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2);
/** * iavf_alloc_queues - Allocate memory for all rings * @adapter: board private structure to initialize * * We allocate one ring per queue at run-time since we don't know the * number of queues at compile-time. The polling_netdev array is * intended for Multiqueue, but should work fine with a single queue.
**/ staticint iavf_alloc_queues(struct iavf_adapter *adapter)
{ int i, num_active_queues;
/* If we're in reset reallocating queues we don't actually know yet for * certain the PF gave us the number of queues we asked for but we'll * assume it did. Once basic reset is finished we'll confirm once we * start negotiating config with PF.
*/ if (adapter->num_req_queues)
num_active_queues = adapter->num_req_queues; elseif ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc)
num_active_queues = adapter->ch_config.total_qps; else
num_active_queues = min_t(int,
adapter->vsi_res->num_queue_pairs,
(int)(num_online_cpus()));
adapter->tx_rings = kcalloc(num_active_queues, sizeof(struct iavf_ring), GFP_KERNEL); if (!adapter->tx_rings) goto err_out;
adapter->rx_rings = kcalloc(num_active_queues, sizeof(struct iavf_ring), GFP_KERNEL); if (!adapter->rx_rings) goto err_out;
for (i = 0; i < num_active_queues; i++) { struct iavf_ring *tx_ring; struct iavf_ring *rx_ring;
/** * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported * @adapter: board private structure to initialize * * Attempt to configure the interrupts using the best available * capabilities of the hardware and the kernel.
**/ staticint iavf_set_interrupt_capability(struct iavf_adapter *adapter)
{ int vector, v_budget; int pairs = 0; int err = 0;
/* It's easy to be greedy for MSI-X vectors, but it really doesn't do * us much good if we have more vectors than CPUs. However, we already * limit the total number of queues by the number of CPUs so we do not * need any further limiting here.
*/
v_budget = min_t(int, pairs + NONQ_VECS,
(int)adapter->vf_res->max_vectors);
/** * iavf_free_q_vectors - Free memory allocated for interrupt vectors * @adapter: board private structure to initialize * * This function frees the memory allocated to the q_vectors. In addition if * NAPI is enabled it will delete any references to the NAPI struct prior * to freeing the q_vector.
**/ staticvoid iavf_free_q_vectors(struct iavf_adapter *adapter)
{ int q_idx, num_q_vectors;
/** * iavf_init_interrupt_scheme - Determine if MSIX is supported and init * @adapter: board private structure to initialize *
**/ staticint iavf_init_interrupt_scheme(struct iavf_adapter *adapter)
{ int err;
err = iavf_alloc_queues(adapter); if (err) {
dev_err(&adapter->pdev->dev, "Unable to allocate memory for queues\n"); goto err_alloc_queues;
}
err = iavf_set_interrupt_capability(adapter); if (err) {
dev_err(&adapter->pdev->dev, "Unable to setup interrupt capabilities\n"); goto err_set_interrupt;
}
err = iavf_alloc_q_vectors(adapter); if (err) {
dev_err(&adapter->pdev->dev, "Unable to allocate memory for queue vectors\n"); goto err_alloc_q_vectors;
}
/* If we've made it so far while ADq flag being ON, then we haven't * bailed out anywhere in middle. And ADq isn't just enabled but actual * resources have been allocated in the reset path. * Now we can truly claim that ADq is enabled.
*/ if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc)
dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created",
adapter->num_tc);
/** * iavf_finish_config - do all netdev work that needs RTNL * @work: our work_struct * * Do work that needs RTNL.
*/ staticvoid iavf_finish_config(struct work_struct *work)
{ struct iavf_adapter *adapter; bool netdev_released = false; int pairs, err;
/* Always take RTNL first to prevent circular lock dependency; * the dev->lock (== netdev lock) is needed to update the queue number.
*/
rtnl_lock();
netdev_lock(adapter->netdev);
switch (adapter->state) { case __IAVF_DOWN: /* Set the real number of queues when reset occurs while * state == __IAVF_DOWN
*/
pairs = adapter->num_active_queues;
netif_set_real_num_rx_queues(adapter->netdev, pairs);
netif_set_real_num_tx_queues(adapter->netdev, pairs);
if (adapter->netdev->reg_state != NETREG_REGISTERED) {
netdev_unlock(adapter->netdev);
netdev_released = true;
err = register_netdevice(adapter->netdev); if (err) {
dev_err(&adapter->pdev->dev, "Unable to register netdev (%d)\n",
err);
/* go back and try again.*/
netdev_lock(adapter->netdev);
iavf_free_rss(adapter);
iavf_free_misc_irq(adapter);
iavf_reset_interrupt_capability(adapter);
iavf_change_state(adapter,
__IAVF_INIT_CONFIG_ADAPTER);
netdev_unlock(adapter->netdev); goto out;
}
} break; case __IAVF_RUNNING:
pairs = adapter->num_active_queues;
netif_set_real_num_rx_queues(adapter->netdev, pairs);
netif_set_real_num_tx_queues(adapter->netdev, pairs); break;
default: break;
}
out: if (!netdev_released)
netdev_unlock(adapter->netdev);
rtnl_unlock();
}
/** * iavf_schedule_finish_config - Set the flags and schedule a reset event * @adapter: board private structure
**/ void iavf_schedule_finish_config(struct iavf_adapter *adapter)
{ if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))
queue_work(adapter->wq, &adapter->finish_config);
}
/** * iavf_process_aq_command - process aq_required flags * and sends aq command * @adapter: pointer to iavf adapter structure * * Returns 0 on success * Returns error code if no command was sent * or error code if the command failed.
**/ staticint iavf_process_aq_command(struct iavf_adapter *adapter)
{ if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG) return iavf_send_vf_config_msg(adapter); if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS) return iavf_send_vf_offload_vlan_v2_msg(adapter); if (adapter->aq_required & IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS) return iavf_send_vf_supported_rxdids_msg(adapter); if (adapter->aq_required & IAVF_FLAG_AQ_GET_PTP_CAPS) return iavf_send_vf_ptp_caps_msg(adapter); if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) {
iavf_disable_queues(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) {
iavf_map_queues(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) {
iavf_add_ether_addrs(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) {
iavf_add_vlans(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) {
iavf_del_ether_addrs(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) {
iavf_del_vlans(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) {
iavf_enable_vlan_stripping(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) {
iavf_disable_vlan_stripping(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW) {
iavf_cfg_queues_bw(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_GET_QOS_CAPS) {
iavf_get_qos_caps(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE) {
iavf_cfg_queues_quanta_size(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) {
iavf_configure_queues(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) {
iavf_enable_queues(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) { /* This message goes straight to the firmware, not the * PF, so we don't have to set current_op as we will * not get a response through the ARQ.
*/
adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS; return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_GET_RSS_HASHCFG) {
iavf_get_rss_hashcfg(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HASHCFG) {
iavf_set_rss_hashcfg(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) {
iavf_set_rss_key(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) {
iavf_set_rss_lut(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HFUNC) {
iavf_set_rss_hfunc(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE) {
iavf_set_promiscuous(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) {
iavf_enable_channels(adapter); return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) {
iavf_disable_channels(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
iavf_add_cloud_filter(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
iavf_del_cloud_filter(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) {
iavf_add_fdir_filter(adapter); return IAVF_SUCCESS;
} if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) {
iavf_del_fdir_filter(adapter); return IAVF_SUCCESS;
} if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) {
iavf_add_adv_rss_cfg(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) {
iavf_del_adv_rss_cfg(adapter); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) {
iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) {
iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) {
iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) {
iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) {
iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) {
iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) {
iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) {
iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD); return 0;
} if (adapter->aq_required & IAVF_FLAG_AQ_SEND_PTP_CMD) {
iavf_virtchnl_send_ptp_cmd(adapter); return IAVF_SUCCESS;
} if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) {
iavf_request_stats(adapter); return 0;
}
return -EAGAIN;
}
/** * iavf_set_vlan_offload_features - set VLAN offload configuration * @adapter: board private structure * @prev_features: previous features used for comparison * @features: updated features used for configuration * * Set the aq_required bit(s) based on the requested features passed in to * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule * the watchdog if any changes are requested to expedite the request via * virtchnl.
**/ staticvoid
iavf_set_vlan_offload_features(struct iavf_adapter *adapter,
netdev_features_t prev_features,
netdev_features_t features)
{ bool enable_stripping = true, enable_insertion = true;
u16 vlan_ethertype = 0;
u64 aq_required = 0;
/* keep cases separate because one ethertype for offloads can be * disabled at the same time as another is disabled, so check for an * enabled ethertype first, then check for disabled. Default to * ETH_P_8021Q so an ethertype is specified if disabling insertion and * stripping.
*/ if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
vlan_ethertype = ETH_P_8021AD; elseif (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
vlan_ethertype = ETH_P_8021Q; elseif (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
vlan_ethertype = ETH_P_8021AD; elseif (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
vlan_ethertype = ETH_P_8021Q; else
vlan_ethertype = ETH_P_8021Q;
if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX)))
enable_stripping = false; if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX)))
enable_insertion = false;
if (VLAN_ALLOWED(adapter)) { /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN * stripping via virtchnl. VLAN insertion can be toggled on the * netdev, but it doesn't require a virtchnl message
*/ if (enable_stripping)
aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING; else
aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING;
} elseif (VLAN_V2_ALLOWED(adapter)) { switch (vlan_ethertype) { case ETH_P_8021Q: if (enable_stripping)
aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING; else
aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING;
if (enable_insertion)
aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION; else
aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION; break; case ETH_P_8021AD: if (enable_stripping)
aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING; else
aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING;
if (aq_required)
iavf_schedule_aq_request(adapter, aq_required);
}
/** * iavf_startup - first step of driver startup * @adapter: board private structure * * Function process __IAVF_STARTUP driver state. * When success the state is changed to __IAVF_INIT_VERSION_CHECK * when fails the state is changed to __IAVF_INIT_FAILED
**/ staticvoid iavf_startup(struct iavf_adapter *adapter)
{ struct pci_dev *pdev = adapter->pdev; struct iavf_hw *hw = &adapter->hw; enum iavf_status status; int ret;
ret = iavf_check_reset_complete(hw); if (ret) {
dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
ret); goto err;
}
hw->aq.num_arq_entries = IAVF_AQ_LEN;
hw->aq.num_asq_entries = IAVF_AQ_LEN;
hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
status = iavf_init_adminq(hw); if (status) {
dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
status); goto err;
}
ret = iavf_send_api_ver(adapter); if (ret) {
dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret);
iavf_shutdown_adminq(hw); goto err;
}
iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK); return;
err:
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/** * iavf_init_version_check - second step of driver startup * @adapter: board private structure * * Function process __IAVF_INIT_VERSION_CHECK driver state. * When success the state is changed to __IAVF_INIT_GET_RESOURCES * when fails the state is changed to __IAVF_INIT_FAILED
**/ staticvoid iavf_init_version_check(struct iavf_adapter *adapter)
{ struct pci_dev *pdev = adapter->pdev; struct iavf_hw *hw = &adapter->hw; int err = -EAGAIN;
if (!iavf_asq_done(hw)) {
dev_err(&pdev->dev, "Admin queue command never completed\n");
iavf_shutdown_adminq(hw);
iavf_change_state(adapter, __IAVF_STARTUP); goto err;
}
/* aq msg sent, awaiting reply */
err = iavf_verify_api_ver(adapter); if (err) { if (err == -EALREADY)
err = iavf_send_api_ver(adapter); else
dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
adapter->pf_version.major,
adapter->pf_version.minor,
VIRTCHNL_VERSION_MAJOR,
VIRTCHNL_VERSION_MINOR); goto err;
}
err = iavf_send_vf_config_msg(adapter); if (err) {
dev_err(&pdev->dev, "Unable to send config request (%d)\n",
err); goto err;
}
iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES); return;
err:
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/** * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES * @adapter: board private structure
*/ int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter)
{ int i, num_req_queues = adapter->num_req_queues; struct iavf_vsi *vsi = &adapter->vsi;
for (i = 0; i < adapter->vf_res->num_vsis; i++) { if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV)
adapter->vsi_res = &adapter->vf_res->vsi_res[i];
} if (!adapter->vsi_res) {
dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); return -ENODEV;
}
if (num_req_queues &&
num_req_queues > adapter->vsi_res->num_queue_pairs) { /* Problem. The PF gave us fewer queues than what we had * negotiated in our request. Need a reset to see if we can't * get back to a working state.
*/
dev_err(&adapter->pdev->dev, "Requested %d queues, but PF only gave us %d.\n",
num_req_queues,
adapter->vsi_res->num_queue_pairs);
adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED;
adapter->num_req_queues = adapter->vsi_res->num_queue_pairs;
iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
/** * iavf_init_get_resources - third step of driver startup * @adapter: board private structure * * Function process __IAVF_INIT_GET_RESOURCES driver state and * finishes driver initialization procedure. * When success the state is changed to __IAVF_DOWN * when fails the state is changed to __IAVF_INIT_FAILED
**/ staticvoid iavf_init_get_resources(struct iavf_adapter *adapter)
{ struct pci_dev *pdev = adapter->pdev; struct iavf_hw *hw = &adapter->hw; int err;
WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES); /* aq msg sent, awaiting reply */ if (!adapter->vf_res) {
adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE,
GFP_KERNEL); if (!adapter->vf_res) {
err = -ENOMEM; goto err;
}
}
err = iavf_get_vf_config(adapter); if (err == -EALREADY) {
err = iavf_send_vf_config_msg(adapter); goto err;
} elseif (err == -EINVAL) { /* We only get -EINVAL if the device is in a very bad * state or if we've been disabled for previous bad * behavior. Either way, we're done now.
*/
iavf_shutdown_adminq(hw);
dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); return;
} if (err) {
dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err); goto err_alloc;
}
err = iavf_parse_vf_resource_msg(adapter); if (err) {
dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n",
err); goto err_alloc;
} /* Some features require additional messages to negotiate extended * capabilities. These are processed in sequence by the * __IAVF_INIT_EXTENDED_CAPS driver state.
*/
adapter->extended_caps = IAVF_EXTENDED_CAPS;
/** * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps * @adapter: board private structure * * Function processes send of the extended VLAN V2 capability message to the * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent, * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2.
*/ staticvoid iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter)
{ int ret;
ret = iavf_send_vf_offload_vlan_v2_msg(adapter); if (ret && ret == -EOPNOTSUPP) { /* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case, * we did not send the capability exchange message and do not * expect a response.
*/
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2;
}
/* We sent the message, so move on to the next step */
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2;
}
/** * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps * @adapter: board private structure * * Function processes receipt of the extended VLAN V2 capability message from * the PF.
**/ staticvoid iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter)
{ int ret;
ret = iavf_get_vf_vlan_v2_caps(adapter); if (ret) goto err;
/* We've processed receipt of the VLAN V2 caps message */
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; return;
err: /* We didn't receive a reply. Make sure we try sending again when * __IAVF_INIT_FAILED attempts to recover.
*/
adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2;
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/** * iavf_init_send_supported_rxdids - part of querying for supported RXDID * formats * @adapter: board private structure * * Function processes send of the request for supported RXDIDs to the PF. * Must clear IAVF_EXTENDED_CAP_RECV_RXDID if the message is not sent, e.g. * due to the PF not negotiating VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC.
*/ staticvoid iavf_init_send_supported_rxdids(struct iavf_adapter *adapter)
{ int ret;
ret = iavf_send_vf_supported_rxdids_msg(adapter); if (ret == -EOPNOTSUPP) { /* PF does not support VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. In this * case, we did not send the capability exchange message and * do not expect a response.
*/
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID;
}
/* We sent the message, so move on to the next step */
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_RXDID;
}
/** * iavf_init_recv_supported_rxdids - part of querying for supported RXDID * formats * @adapter: board private structure * * Function processes receipt of the supported RXDIDs message from the PF.
**/ staticvoid iavf_init_recv_supported_rxdids(struct iavf_adapter *adapter)
{ int ret;
ret = iavf_get_vf_supported_rxdids(adapter); if (ret) goto err;
/* We've processed the PF response to the * VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message we sent previously.
*/
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; return;
err: /* We didn't receive a reply. Make sure we try sending again when * __IAVF_INIT_FAILED attempts to recover.
*/
adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_RXDID;
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/** * iavf_init_send_ptp_caps - part of querying for extended PTP capabilities * @adapter: board private structure * * Function processes send of the request for 1588 PTP capabilities to the PF. * Must clear IAVF_EXTENDED_CAP_SEND_PTP if the message is not sent, e.g. * due to the PF not negotiating VIRTCHNL_VF_PTP_CAP
*/ staticvoid iavf_init_send_ptp_caps(struct iavf_adapter *adapter)
{ if (iavf_send_vf_ptp_caps_msg(adapter) == -EOPNOTSUPP) { /* PF does not support VIRTCHNL_VF_PTP_CAP. In this case, we * did not send the capability exchange message and do not * expect a response.
*/
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP;
}
/* We sent the message, so move on to the next step */
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_PTP;
}
/** * iavf_init_recv_ptp_caps - part of querying for supported PTP capabilities * @adapter: board private structure * * Function processes receipt of the PTP capabilities supported on this VF.
**/ staticvoid iavf_init_recv_ptp_caps(struct iavf_adapter *adapter)
{
memset(&adapter->ptp.hw_caps, 0, sizeof(adapter->ptp.hw_caps));
if (iavf_get_vf_ptp_caps(adapter)) goto err;
/* We've processed the PF response to the VIRTCHNL_OP_1588_PTP_GET_CAPS * message we sent previously.
*/
adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; return;
err: /* We didn't receive a reply. Make sure we try sending again when * __IAVF_INIT_FAILED attempts to recover.
*/
adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_PTP;
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/** * iavf_init_process_extended_caps - Part of driver startup * @adapter: board private structure * * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state * handles negotiating capabilities for features which require an additional * message. * * Once all extended capabilities exchanges are finished, the driver will * transition into __IAVF_INIT_CONFIG_ADAPTER.
*/ staticvoid iavf_init_process_extended_caps(struct iavf_adapter *adapter)
{
WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS);
/* Process capability exchange for VLAN V2 */ if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) {
iavf_init_send_offload_vlan_v2_caps(adapter); return;
} elseif (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) {
iavf_init_recv_offload_vlan_v2_caps(adapter); return;
}
/* Process capability exchange for RXDID formats */ if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_RXDID) {
iavf_init_send_supported_rxdids(adapter); return;
} elseif (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_RXDID) {
iavf_init_recv_supported_rxdids(adapter); return;
}
/* Process capability exchange for PTP features */ if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_PTP) {
iavf_init_send_ptp_caps(adapter); return;
} elseif (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_PTP) {
iavf_init_recv_ptp_caps(adapter); return;
}
/* When we reach here, no further extended capabilities exchanges are * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER
*/
iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER);
}
/** * iavf_init_config_adapter - last part of driver startup * @adapter: board private structure * * After all the supported capabilities are negotiated, then the * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization.
*/ staticvoid iavf_init_config_adapter(struct iavf_adapter *adapter)
{ struct net_device *netdev = adapter->netdev; struct pci_dev *pdev = adapter->pdev; int err;
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
iavf_change_state(adapter, __IAVF_COMM_FAILED);
switch (adapter->state) { case __IAVF_STARTUP:
iavf_startup(adapter); return 30; case __IAVF_INIT_VERSION_CHECK:
iavf_init_version_check(adapter); return 30; case __IAVF_INIT_GET_RESOURCES:
iavf_init_get_resources(adapter); return 1; case __IAVF_INIT_EXTENDED_CAPS:
iavf_init_process_extended_caps(adapter); return 1; case __IAVF_INIT_CONFIG_ADAPTER:
iavf_init_config_adapter(adapter); return 1; case __IAVF_INIT_FAILED: if (test_bit(__IAVF_IN_REMOVE_TASK,
&adapter->crit_section)) { /* Do not update the state and do not reschedule * watchdog task, iavf_remove should handle this state * as it can loop forever
*/ return IAVF_NO_RESCHED;
} if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) {
dev_err(&adapter->pdev->dev, "Failed to communicate with PF; waiting before retry\n");
adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
iavf_shutdown_adminq(hw); return 5000;
} /* Try again from failed step*/
iavf_change_state(adapter, adapter->last_state); return 1000; case __IAVF_COMM_FAILED: if (test_bit(__IAVF_IN_REMOVE_TASK,
&adapter->crit_section)) { /* Set state to __IAVF_INIT_FAILED and perform remove * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task * doesn't bring the state back to __IAVF_COMM_FAILED.
*/
iavf_change_state(adapter, __IAVF_INIT_FAILED);
adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; return IAVF_NO_RESCHED;
}
reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK; if (reg_val == VIRTCHNL_VFR_VFACTIVE ||
reg_val == VIRTCHNL_VFR_COMPLETED) { /* A chance for redemption! */
dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); /* When init task contacts the PF and * gets everything set up again, it'll restart the * watchdog for us. Down, boy. Sit. Stay. Woof.
*/
iavf_change_state(adapter, __IAVF_STARTUP);
adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
}
adapter->aq_required = 0;
adapter->current_op = VIRTCHNL_OP_UNKNOWN; return 10; case __IAVF_RESETTING: return 2000; case __IAVF_DOWN: case __IAVF_DOWN_PENDING: case __IAVF_TESTING: case __IAVF_RUNNING: if (adapter->current_op) { if (!iavf_asq_done(hw)) {
dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n");
iavf_send_api_ver(adapter);
}
} else { int ret = iavf_process_aq_command(adapter);
/* An error will be returned if no commands were * processed; use this opportunity to update stats * if the error isn't -ENOTSUPP
*/ if (ret && ret != -EOPNOTSUPP &&
adapter->state == __IAVF_RUNNING)
iavf_request_stats(adapter);
} if (adapter->state == __IAVF_RUNNING)
iavf_detect_recover_hung(&adapter->vsi); break; case __IAVF_REMOVE: default: return IAVF_NO_RESCHED;
}
netdev_lock(netdev);
msec_delay = iavf_watchdog_step(adapter); /* note that we schedule a different task */ if (adapter->state >= __IAVF_DOWN)
queue_work(adapter->wq, &adapter->adminq_task);
if (msec_delay != IAVF_NO_RESCHED)
queue_delayed_work(adapter->wq, &adapter->watchdog_task,
msecs_to_jiffies(msec_delay));
netdev_unlock(netdev);
}
/** * iavf_disable_vf - disable VF * @adapter: board private structure * * Set communication failed flag and free all resources.
*/ staticvoid iavf_disable_vf(struct iavf_adapter *adapter)
{ struct iavf_mac_filter *f, *ftmp; struct iavf_vlan_filter *fv, *fvtmp; struct iavf_cloud_filter *cf, *cftmp;
netdev_assert_locked(adapter->netdev);
adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
/* We don't use netif_running() because it may be true prior to * ndo_open() returning, so we can't assume it means all our open * tasks have finished, since we're not holding the rtnl_lock here.
*/ if (adapter->state == __IAVF_RUNNING) {
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
netif_carrier_off(adapter->netdev);
netif_tx_disable(adapter->netdev);
adapter->link_up = false;
iavf_napi_disable_all(adapter);
iavf_irq_disable(adapter);
iavf_free_traffic_irqs(adapter);
iavf_free_all_tx_resources(adapter);
iavf_free_all_rx_resources(adapter);
}
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* Delete all of the filters */
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
list_del(&f->list);
kfree(f);
}
/** * iavf_reconfig_qs_bw - Call-back task to handle hardware reset * @adapter: board private structure * * After a reset, the shaper parameters of queues need to be replayed again. * Since the net_shaper object inside TX rings persists across reset, * set the update flag for all queues so that the virtchnl message is triggered * for all queues.
**/ staticvoid iavf_reconfig_qs_bw(struct iavf_adapter *adapter)
{ int i, num = 0;
for (i = 0; i < adapter->num_active_queues; i++) if (adapter->tx_rings[i].q_shaper.bw_min ||
adapter->tx_rings[i].q_shaper.bw_max) {
adapter->tx_rings[i].q_shaper_update = true;
num++;
}
if (num)
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW;
}
/** * iavf_reset_task - Call-back task to handle hardware reset * @work: pointer to work_struct * * During reset we need to shut down and reinitialize the admin queue * before we can use it to communicate with the PF again. We also clear * and reinit the rings because that context is lost as well.
**/ staticvoid iavf_reset_task(struct work_struct *work)
{ struct iavf_adapter *adapter = container_of(work, struct iavf_adapter,
reset_task); struct virtchnl_vf_resource *vfres = adapter->vf_res; struct net_device *netdev = adapter->netdev; struct iavf_hw *hw = &adapter->hw; struct iavf_mac_filter *f, *ftmp; struct iavf_cloud_filter *cf; enum iavf_status status;
u32 reg_val; int i = 0, err; bool running;
netdev_lock(netdev);
iavf_misc_irq_disable(adapter); if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
adapter->flags &= ~IAVF_FLAG_RESET_NEEDED; /* Restart the AQ here. If we have been reset but didn't * detect it, or if the PF had to reinit, our AQ will be hosed.
*/
iavf_shutdown_adminq(hw);
iavf_init_adminq(hw);
iavf_request_reset(adapter);
}
adapter->flags |= IAVF_FLAG_RESET_PENDING;
/* poll until we see the reset actually happen */ for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) {
reg_val = rd32(hw, IAVF_VF_ARQLEN1) &
IAVF_VF_ARQLEN1_ARQENABLE_MASK; if (!reg_val) break;
usleep_range(5000, 10000);
} if (i == IAVF_RESET_WAIT_DETECTED_COUNT) {
dev_info(&adapter->pdev->dev, "Never saw reset\n"); goto continue_reset; /* act like the reset happened */
}
/* wait until the reset is complete and the PF is responding to us */ for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { /* sleep first to make sure a minimum wait time is met */
msleep(IAVF_RESET_WAIT_MS);
if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) {
dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
reg_val);
iavf_disable_vf(adapter);
netdev_unlock(netdev); return; /* Do not attempt to reinit. It's dead, Jim. */
}
continue_reset: /* If we are still early in the state machine, just restart. */ if (adapter->state <= __IAVF_INIT_FAILED) {
iavf_shutdown_adminq(hw);
iavf_change_state(adapter, __IAVF_STARTUP);
iavf_startup(adapter);
queue_delayed_work(adapter->wq, &adapter->watchdog_task,
msecs_to_jiffies(30));
netdev_unlock(netdev); return;
}
/* We don't use netif_running() because it may be true prior to * ndo_open() returning, so we can't assume it means all our open * tasks have finished, since we're not holding the rtnl_lock here.
*/
running = adapter->state == __IAVF_RUNNING;
/* free the Tx/Rx rings and descriptors, might be better to just * re-use them sometime in the future
*/
iavf_free_all_rx_resources(adapter);
iavf_free_all_tx_resources(adapter);
adapter->flags |= IAVF_FLAG_QUEUES_DISABLED; /* kill and reinit the admin queue */
iavf_shutdown_adminq(hw);
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
status = iavf_init_adminq(hw); if (status) {
dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
status); goto reset_err;
}
adapter->aq_required = 0;
if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) ||
(adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) {
err = iavf_reinit_interrupt_scheme(adapter, running); if (err) goto reset_err;
}
if (RSS_AQ(adapter)) {
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
} else {
err = iavf_init_rss(adapter); if (err) goto reset_err;
}
/* Certain capabilities require an extended negotiation process using * extra messages that must be processed after getting the VF * configuration. The related checks such as VLAN_V2_ALLOWED() are not * reliable here, since the configuration has not yet been negotiated. * * Always set these flags, since them related VIRTCHNL messages won't * be sent until after VIRTCHNL_OP_GET_VF_RESOURCES.
*/
adapter->aq_required |= IAVF_FLAG_AQ_EXTENDED_CAPS;
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* Delete filter for the current MAC address, it could have * been changed by the PF via administratively set MAC. * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES.
*/
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) {
list_del(&f->list);
kfree(f);
}
} /* re-add all MAC filters */
list_for_each_entry(f, &adapter->mac_filter_list, list) {
f->add = true;
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* check if TCs are running and re-add all cloud filters */
spin_lock_bh(&adapter->cloud_filter_list_lock); if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc) {
list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
cf->add = true;
}
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
/* We were running when the reset started, so we need to restore some * state here.
*/ if (running) { /* allocate transmit descriptors */
err = iavf_setup_all_tx_resources(adapter); if (err) goto reset_err;
/** * iavf_free_all_tx_resources - Free Tx Resources for All Queues * @adapter: board private structure * * Free all transmit software resources
**/ void iavf_free_all_tx_resources(struct iavf_adapter *adapter)
{ int i;
if (!adapter->tx_rings) return;
for (i = 0; i < adapter->num_active_queues; i++) if (adapter->tx_rings[i].desc)
iavf_free_tx_resources(&adapter->tx_rings[i]);
}
/** * iavf_setup_all_tx_resources - allocate all queues Tx resources * @adapter: board private structure * * If this function returns with an error, then it's possible one or * more of the rings is populated (while the rest are not). It is the * callers duty to clean those orphaned rings. * * Return 0 on success, negative on failure
**/ staticint iavf_setup_all_tx_resources(struct iavf_adapter *adapter)
{ int i, err = 0;
for (i = 0; i < adapter->num_active_queues; i++) {
adapter->tx_rings[i].count = adapter->tx_desc_count;
err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); if (!err) continue;
dev_err(&adapter->pdev->dev, "Allocation for Tx Queue %u failed\n", i); break;
}
return err;
}
/** * iavf_setup_all_rx_resources - allocate all queues Rx resources * @adapter: board private structure * * If this function returns with an error, then it's possible one or * more of the rings is populated (while the rest are not). It is the * callers duty to clean those orphaned rings. * * Return 0 on success, negative on failure
**/ staticint iavf_setup_all_rx_resources(struct iavf_adapter *adapter)
{ int i, err = 0;
for (i = 0; i < adapter->num_active_queues; i++) {
adapter->rx_rings[i].count = adapter->rx_desc_count;
err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); if (!err) continue;
dev_err(&adapter->pdev->dev, "Allocation for Rx Queue %u failed\n", i); break;
} return err;
}
/** * iavf_free_all_rx_resources - Free Rx Resources for All Queues * @adapter: board private structure * * Free all receive software resources
**/ void iavf_free_all_rx_resources(struct iavf_adapter *adapter)
{ int i;
if (!adapter->rx_rings) return;
for (i = 0; i < adapter->num_active_queues; i++) if (adapter->rx_rings[i].desc)
iavf_free_rx_resources(&adapter->rx_rings[i]);
}
/** * iavf_validate_tx_bandwidth - validate the max Tx bandwidth * @adapter: board private structure * @max_tx_rate: max Tx bw for a tc
**/ staticint iavf_validate_tx_bandwidth(struct iavf_adapter *adapter,
u64 max_tx_rate)
{ int speed = 0, ret = 0;
if (ADV_LINK_SUPPORT(adapter)) { if (adapter->link_speed_mbps < U32_MAX) {
speed = adapter->link_speed_mbps; goto validate_bw;
} else {
dev_err(&adapter->pdev->dev, "Unknown link speed\n"); return -EINVAL;
}
}
switch (adapter->link_speed) { case VIRTCHNL_LINK_SPEED_40GB:
speed = SPEED_40000; break; case VIRTCHNL_LINK_SPEED_25GB:
speed = SPEED_25000; break; case VIRTCHNL_LINK_SPEED_20GB:
speed = SPEED_20000; break; case VIRTCHNL_LINK_SPEED_10GB:
speed = SPEED_10000; break; case VIRTCHNL_LINK_SPEED_5GB:
speed = SPEED_5000; break; case VIRTCHNL_LINK_SPEED_2_5GB:
speed = SPEED_2500; break; case VIRTCHNL_LINK_SPEED_1GB:
speed = SPEED_1000; break; case VIRTCHNL_LINK_SPEED_100MB:
speed = SPEED_100; break; default: break;
}
validate_bw: if (max_tx_rate > speed) {
dev_err(&adapter->pdev->dev, "Invalid tx rate specified\n");
ret = -EINVAL;
}
return ret;
}
/** * iavf_validate_ch_config - validate queue mapping info * @adapter: board private structure * @mqprio_qopt: queue parameters * * This function validates if the config provided by the user to * configure queue channels is valid or not. Returns 0 on a valid * config.
**/ staticint iavf_validate_ch_config(struct iavf_adapter *adapter, struct tc_mqprio_qopt_offload *mqprio_qopt)
{
u64 total_max_rate = 0;
u32 tx_rate_rem = 0; int i, num_qps = 0;
u64 tx_rate = 0; int ret = 0;
if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS ||
mqprio_qopt->qopt.num_tc < 1) return -EINVAL;
for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { if (!mqprio_qopt->qopt.count[i] ||
mqprio_qopt->qopt.offset[i] != num_qps) return -EINVAL; if (mqprio_qopt->min_rate[i]) {
dev_err(&adapter->pdev->dev, "Invalid min tx rate (greater than 0) specified for TC%d\n",
i); return -EINVAL;
}
/* convert to Mbps */
tx_rate = div_u64(mqprio_qopt->max_rate[i],
IAVF_MBPS_DIVISOR);
if (mqprio_qopt->max_rate[i] &&
tx_rate < IAVF_MBPS_QUANTA) {
dev_err(&adapter->pdev->dev, "Invalid max tx rate for TC%d, minimum %dMbps\n",
i, IAVF_MBPS_QUANTA); return -EINVAL;
}
/** * iavf_is_tc_config_same - Compare the mqprio TC config with the * TC config already configured on this adapter. * @adapter: board private structure * @mqprio_qopt: TC config received from kernel. * * This function compares the TC config received from the kernel * with the config already configured on the adapter. * * Return: True if configuration is same, false otherwise.
**/ staticbool iavf_is_tc_config_same(struct iavf_adapter *adapter, struct tc_mqprio_qopt *mqprio_qopt)
{ struct virtchnl_channel_info *ch = &adapter->ch_config.ch_info[0]; int i;
if (adapter->num_tc != mqprio_qopt->num_tc) returnfalse;
for (i = 0; i < adapter->num_tc; i++) { if (ch[i].count != mqprio_qopt->count[i] ||
ch[i].offset != mqprio_qopt->offset[i]) returnfalse;
} returntrue;
}
/** * __iavf_setup_tc - configure multiple traffic classes * @netdev: network interface device structure * @type_data: tc offload data * * This function processes the config information provided by the * user to configure traffic classes/queue channels and packages the * information to request the PF to setup traffic classes. * * Returns 0 on success.
**/ staticint __iavf_setup_tc(struct net_device *netdev, void *type_data)
{ struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; struct iavf_adapter *adapter = netdev_priv(netdev); struct virtchnl_vf_resource *vfres = adapter->vf_res;
u8 num_tc = 0, total_qps = 0; int ret = 0, netdev_tc = 0;
u64 max_tx_rate;
u16 mode; int i;
/* add queue channel */ if (mode == TC_MQPRIO_MODE_CHANNEL) { if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) {
dev_err(&adapter->pdev->dev, "ADq not supported\n"); return -EOPNOTSUPP;
} if (adapter->ch_config.state != __IAVF_TC_INVALID) {
dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); return -EINVAL;
}
ret = iavf_validate_ch_config(adapter, mqprio_qopt); if (ret) return ret; /* Return if same TC config is requested */ if (iavf_is_tc_config_same(adapter, &mqprio_qopt->qopt)) return 0;
adapter->num_tc = num_tc;
for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { if (i < num_tc) {
adapter->ch_config.ch_info[i].count =
mqprio_qopt->qopt.count[i];
adapter->ch_config.ch_info[i].offset =
mqprio_qopt->qopt.offset[i];
total_qps += mqprio_qopt->qopt.count[i];
max_tx_rate = mqprio_qopt->max_rate[i]; /* convert to Mbps */
max_tx_rate = div_u64(max_tx_rate,
IAVF_MBPS_DIVISOR);
adapter->ch_config.ch_info[i].max_tx_rate =
max_tx_rate;
} else {
adapter->ch_config.ch_info[i].count = 1;
adapter->ch_config.ch_info[i].offset = 0;
}
}
/* Take snapshot of original config such as "num_active_queues" * It is used later when delete ADQ flow is exercised, so that * once delete ADQ flow completes, VF shall go back to its * original queue configuration
*/
/* Store queue info based on TC so that VF gets configured * with correct number of queues when VF completes ADQ config * flow
*/
adapter->ch_config.total_qps = total_qps;
netif_tx_stop_all_queues(netdev);
netif_tx_disable(netdev);
adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS;
netdev_reset_tc(netdev); /* Report the tc mapping up the stack */
netdev_set_num_tc(adapter->netdev, num_tc); for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
u16 qcount = mqprio_qopt->qopt.count[i];
u16 qoffset = mqprio_qopt->qopt.offset[i];
if (i < num_tc)
netdev_set_tc_queue(netdev, netdev_tc++, qcount,
qoffset);
}
} exit: if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) return 0;
if (n_proto_key == ETH_P_ALL) {
n_proto_key = 0;
n_proto_mask = 0;
}
n_proto = n_proto_key & n_proto_mask; if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) return -EINVAL; if (n_proto == ETH_P_IPV6) { /* specify flow type as TCP IPv6 */
vf->flow_type = VIRTCHNL_TCP_V6_FLOW;
}
if (match.key->ip_proto != IPPROTO_TCP) {
dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); return -EINVAL;
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { struct flow_match_eth_addrs match;
flow_rule_match_eth_addrs(rule, &match);
/* use is_broadcast and is_zero to check for all 0xf or 0 */ if (!is_zero_ether_addr(match.mask->dst)) { if (is_broadcast_ether_addr(match.mask->dst)) {
field_flags |= IAVF_CLOUD_FIELD_OMAC;
} else {
dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n",
match.mask->dst); return -EINVAL;
}
}
if (!is_zero_ether_addr(match.key->dst)) if (is_valid_ether_addr(match.key->dst) ||
is_multicast_ether_addr(match.key->dst)) { /* set the mask if a valid dst_mac address */ for (i = 0; i < ETH_ALEN; i++)
vf->mask.tcp_spec.dst_mac[i] |= 0xff;
ether_addr_copy(vf->data.tcp_spec.dst_mac,
match.key->dst);
}
if (!is_zero_ether_addr(match.key->src)) if (is_valid_ether_addr(match.key->src) ||
is_multicast_ether_addr(match.key->src)) { /* set the mask if a valid dst_mac address */ for (i = 0; i < ETH_ALEN; i++)
vf->mask.tcp_spec.src_mac[i] |= 0xff;
ether_addr_copy(vf->data.tcp_spec.src_mac,
match.key->src);
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { struct flow_match_vlan match;
if (flow_rule_has_control_flags(match.mask->flags,
f->common.extack)) return -EOPNOTSUPP;
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { struct flow_match_ipv4_addrs match;
flow_rule_match_ipv4_addrs(rule, &match); if (match.mask->dst) { if (match.mask->dst == cpu_to_be32(0xffffffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n",
be32_to_cpu(match.mask->dst)); return -EINVAL;
}
}
if (match.mask->src) { if (match.mask->src == cpu_to_be32(0xffffffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n",
be32_to_cpu(match.mask->src)); return -EINVAL;
}
}
if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) {
dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); return -EINVAL;
} if (match.key->dst) {
vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff);
vf->data.tcp_spec.dst_ip[0] = match.key->dst;
} if (match.key->src) {
vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff);
vf->data.tcp_spec.src_ip[0] = match.key->src;
}
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { struct flow_match_ipv6_addrs match;
flow_rule_match_ipv6_addrs(rule, &match);
/* validate mask, make sure it is not IPV6_ADDR_ANY */ if (ipv6_addr_any(&match.mask->dst)) {
dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n",
IPV6_ADDR_ANY); return -EINVAL;
}
/* src and dest IPv6 address should not be LOOPBACK * (0:0:0:0:0:0:0:1) which can be represented as ::1
*/ if (ipv6_addr_loopback(&match.key->dst) ||
ipv6_addr_loopback(&match.key->src)) {
dev_err(&adapter->pdev->dev, "ipv6 addr should not be loopback\n"); return -EINVAL;
} if (!ipv6_addr_any(&match.mask->dst) ||
!ipv6_addr_any(&match.mask->src))
field_flags |= IAVF_CLOUD_FIELD_IIP;
for (i = 0; i < 4; i++)
vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff);
memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, sizeof(vf->data.tcp_spec.dst_ip)); for (i = 0; i < 4; i++)
vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff);
memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, sizeof(vf->data.tcp_spec.src_ip));
} if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { struct flow_match_ports match;
flow_rule_match_ports(rule, &match); if (match.mask->src) { if (match.mask->src == cpu_to_be16(0xffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad src port mask %u\n",
be16_to_cpu(match.mask->src)); return -EINVAL;
}
}
if (match.mask->dst) { if (match.mask->dst == cpu_to_be16(0xffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n",
be16_to_cpu(match.mask->dst)); return -EINVAL;
}
} if (match.key->dst) {
vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff);
vf->data.tcp_spec.dst_port = match.key->dst;
}
/** * iavf_handle_tclass - Forward to a traffic class on the device * @adapter: board private structure * @tc: traffic class index on the device * @filter: pointer to cloud filter structure
*/ staticint iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, struct iavf_cloud_filter *filter)
{ if (tc == 0) return 0; if (tc < adapter->num_tc) { if (!filter->f.data.tcp_spec.dst_port) {
dev_err(&adapter->pdev->dev, "Specify destination port to redirect to traffic class other than TC0\n"); return -EINVAL;
}
} /* redirect to a traffic class on the same device */
filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT;
filter->f.action_meta = tc; return 0;
}
/** * iavf_find_cf - Find the cloud filter in the list * @adapter: Board private structure * @cookie: filter specific cookie * * Returns ptr to the filter object or NULL. Must be called while holding the * cloud_filter_list_lock.
*/ staticstruct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, unsignedlong *cookie)
{ struct iavf_cloud_filter *filter = NULL;
/* bail out here if filter already exists */
spin_lock_bh(&adapter->cloud_filter_list_lock); if (iavf_find_cf(adapter, &cls_flower->cookie)) {
dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n");
err = -EEXIST; goto spin_unlock;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
/* set the mask to all zeroes to begin with */
memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); /* start out with flow type and eth type IPv4 to begin with */
filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW;
err = iavf_parse_cls_flower(adapter, cls_flower, filter); if (err) goto err;
err = iavf_handle_tclass(adapter, tc, filter); if (err) goto err;
/* add filter to the list */
spin_lock_bh(&adapter->cloud_filter_list_lock);
list_add_tail(&filter->list, &adapter->cloud_filter_list);
adapter->num_cloud_filters++;
filter->add = true;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
spin_unlock:
spin_unlock_bh(&adapter->cloud_filter_list_lock);
err: if (err)
kfree(filter);
/* The parser lib at the PF expects the packet starting with MAC hdr */ switch (ntohs(cls_u32->common.protocol)) { case ETH_P_802_3: break; case ETH_P_IP:
spec_h = (struct ethhdr *)hdrs->raw.spec;
mask_h = (struct ethhdr *)hdrs->raw.mask;
spec_h->h_proto = htons(ETH_P_IP);
mask_h->h_proto = htons(0xFFFF);
off_base += ETH_HLEN; break; default:
NL_SET_ERR_MSG_MOD(extack, "Only 802_3 and ip filter protocols are supported");
status = -EOPNOTSUPP; goto free_alloc;
}
for (i = 0; i < cls_u32->knode.sel->nkeys; i++) {
__be32 val, mask; int off;
off = off_base + cls_u32->knode.sel->keys[i].off;
val = cls_u32->knode.sel->keys[i].val;
mask = cls_u32->knode.sel->keys[i].mask;
if (off >= sizeof(hdrs->raw.spec)) {
NL_SET_ERR_MSG_MOD(extack, "Input exceeds maximum allowed.");
status = -EINVAL; goto free_alloc;
}
/** * iavf_del_cls_u32 - Delete U32 classifier offloads * @adapter: pointer to iavf adapter structure * @cls_u32: pointer to tc_cls_u32_offload struct with flow info * * Return: 0 on success or negative errno on failure.
*/ staticint iavf_del_cls_u32(struct iavf_adapter *adapter, struct tc_cls_u32_offload *cls_u32)
{ return iavf_fdir_del_fltr(adapter, true, cls_u32->knode.handle);
}
/** * iavf_setup_tc_cls_u32 - U32 filter offloads * @adapter: pointer to iavf adapter structure * @cls_u32: pointer to tc_cls_u32_offload struct with flow info * * Return: 0 on success or negative errno on failure.
*/ staticint iavf_setup_tc_cls_u32(struct iavf_adapter *adapter, struct tc_cls_u32_offload *cls_u32)
{ if (!TC_U32_SUPPORT(adapter) || !FDIR_FLTR_SUPPORT(adapter)) return -EOPNOTSUPP;
switch (cls_u32->command) { case TC_CLSU32_NEW_KNODE: case TC_CLSU32_REPLACE_KNODE: return iavf_add_cls_u32(adapter, cls_u32); case TC_CLSU32_DELETE_KNODE: return iavf_del_cls_u32(adapter, cls_u32); default: return -EOPNOTSUPP;
}
}
/** * iavf_setup_tc_block_cb - block callback for tc * @type: type of offload * @type_data: offload data * @cb_priv: * * This function is the block callback for traffic classes
**/ staticint iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
{ struct iavf_adapter *adapter = cb_priv;
if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) return -EOPNOTSUPP;
switch (type) { case TC_SETUP_CLSFLOWER: return iavf_setup_tc_cls_flower(cb_priv, type_data); case TC_SETUP_CLSU32: return iavf_setup_tc_cls_u32(cb_priv, type_data); default: return -EOPNOTSUPP;
}
}
static LIST_HEAD(iavf_block_cb_list);
/** * iavf_setup_tc - configure multiple traffic classes * @netdev: network interface device structure * @type: type of offload * @type_data: tc offload data * * This function is the callback to ndo_setup_tc in the * netdev_ops. * * Returns 0 on success
**/ staticint iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, void *type_data)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
/** * iavf_restore_fdir_filters * @adapter: board private structure * * Restore existing FDIR filters when VF netdev comes back up.
**/ staticvoid iavf_restore_fdir_filters(struct iavf_adapter *adapter)
{ struct iavf_fdir_fltr *f;
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry(f, &adapter->fdir_list_head, list) { if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST) { /* Cancel a request, keep filter as active */
f->state = IAVF_FDIR_FLTR_ACTIVE;
} elseif (f->state == IAVF_FDIR_FLTR_DIS_PENDING ||
f->state == IAVF_FDIR_FLTR_INACTIVE) { /* Add filters which are inactive or have a pending * request to PF to be deleted
*/
f->state = IAVF_FDIR_FLTR_ADD_REQUEST;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
}
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
}
/** * iavf_open - Called when a network interface is made active * @netdev: network interface device structure * * Returns 0 on success, negative value on failure * * 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 watchdog is started, * and the stack is notified that the interface is ready.
**/ staticint iavf_open(struct net_device *netdev)
{ struct iavf_adapter *adapter = netdev_priv(netdev); int err;
netdev_assert_locked(netdev);
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) {
dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); return -EIO;
}
if (adapter->state != __IAVF_DOWN) return -EBUSY;
if (adapter->state == __IAVF_RUNNING &&
!test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) {
dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); return 0;
}
/** * iavf_close - Disables a network interface * @netdev: network interface device structure * * Returns 0, this is not allowed to fail * * The close entry point is called when an interface is de-activated * by the OS. The hardware is still under the drivers control, but * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) * are freed, along with all transmit and receive resources.
**/ staticint iavf_close(struct net_device *netdev)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
u64 aq_to_restore; int status;
netdev_assert_locked(netdev);
if (adapter->state <= __IAVF_DOWN_PENDING) return 0;
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); /* We cannot send IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS before * IAVF_FLAG_AQ_DISABLE_QUEUES because in such case there is rtnl * deadlock with adminq_task() until iavf_close timeouts. We must send * IAVF_FLAG_AQ_GET_CONFIG before IAVF_FLAG_AQ_DISABLE_QUEUES to make * disable queues possible for vf. Give only necessary flags to * iavf_down and save other to set them right before iavf_close() * returns, when IAVF_FLAG_AQ_DISABLE_QUEUES will be already sent and * iavf will be in DOWN state.
*/
aq_to_restore = adapter->aq_required;
adapter->aq_required &= IAVF_FLAG_AQ_GET_CONFIG;
/* Remove flags which we do not want to send after close or we want to * send before disable queues.
*/
aq_to_restore &= ~(IAVF_FLAG_AQ_GET_CONFIG |
IAVF_FLAG_AQ_ENABLE_QUEUES |
IAVF_FLAG_AQ_CONFIGURE_QUEUES |
IAVF_FLAG_AQ_ADD_VLAN_FILTER |
IAVF_FLAG_AQ_ADD_MAC_FILTER |
IAVF_FLAG_AQ_ADD_CLOUD_FILTER |
IAVF_FLAG_AQ_ADD_FDIR_FILTER |
IAVF_FLAG_AQ_ADD_ADV_RSS_CFG);
/* We explicitly don't free resources here because the hardware is * still active and can DMA into memory. Resources are cleared in * iavf_virtchnl_completion() after we get confirmation from the PF * driver that the rings have been stopped. * * Also, we wait for state to transition to __IAVF_DOWN before * returning. State change occurs in iavf_virtchnl_completion() after * VF resources are released (which occurs after PF driver processes and * responds to admin queue commands).
*/
status = wait_event_timeout(adapter->down_waitqueue,
adapter->state == __IAVF_DOWN,
msecs_to_jiffies(500)); if (!status)
netdev_warn(netdev, "Device resources not yet released\n");
netdev_lock(netdev);
adapter->aq_required |= aq_to_restore;
return 0;
}
/** * iavf_change_mtu - Change the Maximum Transfer Unit * @netdev: network interface device structure * @new_mtu: new value for maximum frame size * * Returns 0 on success, negative on failure
**/ staticint iavf_change_mtu(struct net_device *netdev, int new_mtu)
{ struct iavf_adapter *adapter = netdev_priv(netdev); int ret = 0;
netdev_dbg(netdev, "changing MTU from %d to %d\n",
netdev->mtu, new_mtu);
WRITE_ONCE(netdev->mtu, new_mtu);
if (netif_running(netdev)) {
iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
ret = iavf_wait_for_reset(adapter); if (ret < 0)
netdev_warn(netdev, "MTU change interrupted waiting for reset"); elseif (ret)
netdev_warn(netdev, "MTU change timed out waiting for reset");
}
/** * iavf_set_features - set the netdev feature flags * @netdev: ptr to the netdev being adjusted * @features: the feature set that the stack is suggesting * Note: expects to be called while under rtnl_lock()
**/ staticint iavf_set_features(struct net_device *netdev,
netdev_features_t features)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
/* trigger update on any VLAN feature change */ if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^
(features & NETIF_VLAN_OFFLOAD_FEATURES))
iavf_set_vlan_offload_features(adapter, netdev->features,
features); if (CRC_OFFLOAD_ALLOWED(adapter) &&
((netdev->features & NETIF_F_RXFCS) ^ (features & NETIF_F_RXFCS)))
iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
if ((netdev->features & NETIF_F_NTUPLE) ^ (features & NETIF_F_NTUPLE)) { if (features & NETIF_F_NTUPLE)
adapter->flags |= IAVF_FLAG_FDIR_ENABLED; else
iavf_disable_fdir(adapter);
}
return 0;
}
/** * iavf_features_check - Validate encapsulated packet conforms to limits * @skb: skb buff * @dev: This physical port's netdev * @features: Offload features that the stack believes apply
**/ static netdev_features_t iavf_features_check(struct sk_buff *skb, struct net_device *dev,
netdev_features_t features)
{
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 (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
features &= ~NETIF_F_GSO_MASK;
/* MACLEN can support at most 63 words */
len = skb_network_offset(skb); if (len & ~(63 * 2)) goto out_err;
/* IPLEN and EIPLEN can support at most 127 dwords */
len = skb_network_header_len(skb); if (len & ~(127 * 4)) goto out_err;
if (skb->encapsulation) { /* L4TUNLEN can support 127 words */
len = skb_inner_network_header(skb) - skb_transport_header(skb); if (len & ~(127 * 2)) goto out_err;
/* IPLEN can support at most 127 dwords */
len = skb_inner_transport_header(skb) -
skb_inner_network_header(skb); if (len & ~(127 * 4)) goto out_err;
}
/* No need to validate L4LEN as TCP is the only protocol with a * flexible value and we support all possible values supported * by TCP, which is at most 15 dwords
*/
return features;
out_err: return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
/** * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off * @adapter: board private structure * * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 * were negotiated determine the VLAN features that can be toggled on and off.
**/ static netdev_features_t
iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter)
{
netdev_features_t hw_features = 0;
if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) return hw_features;
if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_TX; if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8)
hw_features |= NETIF_F_HW_VLAN_STAG_TX;
} elseif (insertion_support->inner &&
insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { if (insertion_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
}
}
if (CRC_OFFLOAD_ALLOWED(adapter))
hw_features |= NETIF_F_RXFCS;
return hw_features;
}
/** * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures * @adapter: board private structure * * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 * were negotiated determine the VLAN features that are enabled by default.
**/ static netdev_features_t
iavf_get_netdev_vlan_features(struct iavf_adapter *adapter)
{
netdev_features_t features = 0;
if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) return features;
/* give priority to outer stripping and don't support both outer * and inner stripping
*/
ethertype_init = vlan_v2_caps->offloads.ethertype_init; if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { if (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_RX; elseif (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_RX;
} elseif (stripping_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) { if (stripping_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_RX;
}
/* give priority to outer insertion and don't support both outer * and inner insertion
*/ if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_TX; elseif (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_TX;
} elseif (insertion_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) { if (insertion_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_TX;
}
/* give priority to outer filtering and don't bother if both * outer and inner filtering are enabled
*/
ethertype_init = vlan_v2_caps->filtering.ethertype_init; if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { if (filtering_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_FILTER; if (filtering_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_FILTER;
} elseif (filtering_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) { if (filtering_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_FILTER; if (filtering_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_FILTER;
}
}
if (!num_non_zero_vlan && (netdev->features & vlan_strip) &&
!(netdev->features & NETIF_F_RXFCS) && is_vlan_strip) {
requested_features &= ~vlan_strip;
netdev_info(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n"); return requested_features;
}
if ((netdev->features & NETIF_F_RXFCS) && is_vlan_strip) {
requested_features &= ~vlan_strip; if (!(netdev->features & vlan_strip))
netdev_info(netdev, "To enable VLAN stripping, first need to enable FCS/CRC stripping");
return requested_features;
}
if (num_non_zero_vlan && is_vlan_strip &&
!(netdev->features & NETIF_F_RXFCS)) {
requested_features &= ~NETIF_F_RXFCS;
netdev_info(netdev, "To disable FCS/CRC stripping, first need to disable VLAN stripping");
}
return requested_features;
}
/** * iavf_fix_features - fix up the netdev feature bits * @netdev: our net device * @features: desired feature bits * * Returns fixed-up features bits
**/ static netdev_features_t iavf_fix_features(struct net_device *netdev,
netdev_features_t features)
{ struct iavf_adapter *adapter = netdev_priv(netdev);
features = iavf_fix_netdev_vlan_features(adapter, features);
if (!FDIR_FLTR_SUPPORT(adapter))
features &= ~NETIF_F_NTUPLE;
/** * iavf_check_reset_complete - check that VF reset is complete * @hw: pointer to hw struct * * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
**/ staticint iavf_check_reset_complete(struct iavf_hw *hw)
{
u32 rstat; int i;
for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
rstat = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK; if ((rstat == VIRTCHNL_VFR_VFACTIVE) ||
(rstat == VIRTCHNL_VFR_COMPLETED)) return 0;
msleep(IAVF_RESET_WAIT_MS);
} return -EBUSY;
}
/** * iavf_process_config - Process the config information we got from the PF * @adapter: board private structure * * Verify that we have a valid config struct, and set up our netdev features * and our VSI struct.
**/ int iavf_process_config(struct iavf_adapter *adapter)
{ struct virtchnl_vf_resource *vfres = adapter->vf_res;
netdev_features_t hw_vlan_features, vlan_features; struct net_device *netdev = adapter->netdev;
netdev_features_t hw_enc_features;
netdev_features_t hw_features;
/* advertise to stack only if offloads for encapsulated packets is * supported
*/ if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) {
hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_GRE |
NETIF_F_GSO_GRE_CSUM |
NETIF_F_GSO_IPXIP4 |
NETIF_F_GSO_IPXIP6 |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL |
0;
if (!(vfres->vf_cap_flags &
VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
netdev->gso_partial_features |=
NETIF_F_GSO_UDP_TUNNEL_CSUM;
netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
netdev->hw_enc_features |= hw_enc_features;
} /* record features VLANs can make use of */
netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
/* Write features and hw_features separately to avoid polluting * with, or dropping, features that are set when we registered.
*/
hw_features = hw_enc_features;
/* get HW VLAN features that can be toggled */
hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter);
/* Enable HW TC offload if ADQ or tc U32 is supported */ if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ ||
TC_U32_SUPPORT(adapter))
hw_features |= NETIF_F_HW_TC;
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO)
hw_features |= NETIF_F_GSO_UDP_L4;
/* Do not turn on offloads when they are requested to be turned off. * TSO needs minimum 576 bytes to work correctly.
*/ if (netdev->wanted_features) { if (!(netdev->wanted_features & NETIF_F_TSO) ||
netdev->mtu < 576)
netdev->features &= ~NETIF_F_TSO; if (!(netdev->wanted_features & NETIF_F_TSO6) ||
netdev->mtu < 576)
netdev->features &= ~NETIF_F_TSO6; if (!(netdev->wanted_features & NETIF_F_TSO_ECN))
netdev->features &= ~NETIF_F_TSO_ECN; if (!(netdev->wanted_features & NETIF_F_GRO))
netdev->features &= ~NETIF_F_GRO; if (!(netdev->wanted_features & NETIF_F_GSO))
netdev->features &= ~NETIF_F_GSO;
}
return 0;
}
/** * iavf_probe - Device Initialization Routine * @pdev: PCI device information struct * @ent: entry in iavf_pci_tbl * * Returns 0 on success, negative on failure * * iavf_probe initializes an adapter identified by a pci_dev structure. * The OS initialization, configuring of the adapter private structure, * and a hardware reset occur.
**/ staticint iavf_probe(struct pci_dev *pdev, conststruct pci_device_id *ent)
{ struct net_device *netdev; struct iavf_adapter *adapter = NULL; struct iavf_hw *hw = NULL; int err, len;
err = pci_enable_device(pdev); if (err) return err;
queue_delayed_work(adapter->wq, &adapter->watchdog_task,
msecs_to_jiffies(5 * (pdev->devfn & 0x07))); /* Initialization goes on in the work. Do not add more of it below. */ return 0;
netdev_unlock(netdev); if (running)
rtnl_unlock();
return 0;
}
/** * iavf_resume - Power management resume routine * @dev_d: device info pointer * * Called when the system (VM) is resumed from sleep/suspend.
**/ staticint iavf_resume(struct device *dev_d)
{ struct pci_dev *pdev = to_pci_dev(dev_d); struct iavf_adapter *adapter;
u32 err;
/** * iavf_remove - Device Removal Routine * @pdev: PCI device information struct * * iavf_remove is called by the PCI subsystem to alert the driver * that it should release a PCI device. The could be caused by a * Hot-Plug event, or because the driver is going to be removed from * memory.
**/ staticvoid iavf_remove(struct pci_dev *pdev)
{ struct iavf_fdir_fltr *fdir, *fdirtmp; struct iavf_vlan_filter *vlf, *vlftmp; struct iavf_cloud_filter *cf, *cftmp; struct iavf_adv_rss *rss, *rsstmp; struct iavf_mac_filter *f, *ftmp; struct iavf_adapter *adapter; struct net_device *netdev; struct iavf_hw *hw;
/* Don't proceed with remove if netdev is already freed */
netdev = pci_get_drvdata(pdev); if (!netdev) return;
if (test_and_set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) return;
/* Wait until port initialization is complete. * There are flows where register/unregister netdev may race.
*/ while (1) {
netdev_lock(netdev); if (adapter->state == __IAVF_RUNNING ||
adapter->state == __IAVF_DOWN ||
adapter->state == __IAVF_INIT_FAILED) {
netdev_unlock(netdev); break;
} /* Simply return if we already went through iavf_shutdown */ if (adapter->state == __IAVF_REMOVE) {
netdev_unlock(netdev); return;
}
iavf_request_reset(adapter);
msleep(50); /* If the FW isn't responding, kick it once, but only once. */ if (!iavf_asq_done(hw)) {
iavf_request_reset(adapter);
msleep(50);
}
iavf_ptp_release(adapter);
iavf_misc_irq_disable(adapter); /* Shut down all the garbage mashers on the detention level */
netdev_unlock(netdev);
cancel_work_sync(&adapter->reset_task);
cancel_delayed_work_sync(&adapter->watchdog_task);
cancel_work_sync(&adapter->adminq_task);
netdev_lock(netdev);
/* destroy the locks only once, here */
mutex_destroy(&hw->aq.arq_mutex);
mutex_destroy(&hw->aq.asq_mutex);
netdev_unlock(netdev);
iounmap(hw->hw_addr);
pci_release_regions(pdev);
kfree(adapter->vf_res);
spin_lock_bh(&adapter->mac_vlan_list_lock); /* If we got removed before an up/down sequence, we've got a filter * hanging out there that we need to get rid of.
*/
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
list_del(&f->list);
kfree(f);
}
list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
list) {
list_del(&vlf->list);
kfree(vlf);
}
/** * iavf_init_module - Driver Registration Routine * * iavf_init_module is the first routine called when the driver is * loaded. All it does is register with the PCI subsystem.
**/ staticint __init iavf_init_module(void)
{
pr_info("iavf: %s\n", iavf_driver_string);
pr_info("%s\n", iavf_copyright);
return pci_register_driver(&iavf_driver);
}
module_init(iavf_init_module);
/** * iavf_exit_module - Driver Exit Cleanup Routine * * iavf_exit_module is called just before the driver is removed * from memory.
**/ staticvoid __exit iavf_exit_module(void)
{
pci_unregister_driver(&iavf_driver);
}
module_exit(iavf_exit_module);
/* iavf_main.c */
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