/** * struct i40e_stats - definition for an ethtool statistic * @stat_string: statistic name to display in ethtool -S output * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64) * @stat_offset: offsetof() the stat from a base pointer * * This structure defines a statistic to be added to the ethtool stats buffer. * It defines a statistic as offset from a common base pointer. Stats should * be defined in constant arrays using the I40E_STAT macro, with every element * of the array using the same _type for calculating the sizeof_stat and * stat_offset. * * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from * the i40e_add_ethtool_stat() helper function. * * The @stat_string is interpreted as a format string, allowing formatted * values to be inserted while looping over multiple structures for a given * statistics array. Thus, every statistic string in an array should have the * same type and number of format specifiers, to be formatted by variadic * arguments to the i40e_add_stat_string() helper function.
**/ struct i40e_stats { char stat_string[ETH_GSTRING_LEN]; int sizeof_stat; int stat_offset;
};
/* Helper macro to define an i40e_stat structure with proper size and type. * Use this when defining constant statistics arrays. Note that @_type expects * only a type name and is used multiple times.
*/ #define I40E_STAT(_type, _name, _stat) { \
.stat_string = _name, \
.sizeof_stat = sizeof_field(_type, _stat), \
.stat_offset = offsetof(_type, _stat) \
}
/* Helper macro for defining some statistics directly copied from the netdev * stats structure.
*/ #define I40E_NETDEV_STAT(_net_stat) \
I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
/* Helper macro for defining some statistics related to queues */ #define I40E_QUEUE_STAT(_name, _stat) \
I40E_STAT(struct i40e_ring, _name, _stat)
/* Stats associated with a Tx or Rx ring */ staticconststruct i40e_stats i40e_gstrings_queue_stats[] = {
I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
};
/** * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer * @data: location to store the stat value * @pointer: basis for where to copy from * @stat: the stat definition * * Copies the stat data defined by the pointer and stat structure pair into * the memory supplied as data. Used to implement i40e_add_ethtool_stats and * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
*/ staticvoid
i40e_add_one_ethtool_stat(u64 *data, void *pointer, conststruct i40e_stats *stat)
{ char *p;
if (!pointer) { /* ensure that the ethtool data buffer is zero'd for any stats * which don't have a valid pointer.
*/
*data = 0; return;
}
/** * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer * @data: ethtool stats buffer * @pointer: location to copy stats from * @stats: array of stats to copy * @size: the size of the stats definition * * Copy the stats defined by the stats array using the pointer as a base into * the data buffer supplied by ethtool. Updates the data pointer to point to * the next empty location for successive calls to __i40e_add_ethtool_stats. * If pointer is null, set the data values to zero and update the pointer to * skip these stats.
**/ staticvoid
__i40e_add_ethtool_stats(u64 **data, void *pointer, conststruct i40e_stats stats[], constunsignedint size)
{ unsignedint i;
for (i = 0; i < size; i++)
i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
}
/** * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer * @data: ethtool stats buffer * @pointer: location where stats are stored * @stats: static const array of stat definitions * * Macro to ease the use of __i40e_add_ethtool_stats by taking a static * constant stats array and passing the ARRAY_SIZE(). This avoids typos by * ensuring that we pass the size associated with the given stats array. * * The parameter @stats is evaluated twice, so parameters with side effects * should be avoided.
**/ #define i40e_add_ethtool_stats(data, pointer, stats) \
__i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
/** * i40e_add_queue_stats - copy queue statistics into supplied buffer * @data: ethtool stats buffer * @ring: the ring to copy * * Queue statistics must be copied while protected by * u64_stats_fetch_begin, so we can't directly use i40e_add_ethtool_stats. * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the * ring pointer is null, zero out the queue stat values and update the data * pointer. Otherwise safely copy the stats from the ring into the supplied * buffer and update the data pointer when finished. * * This function expects to be called while under rcu_read_lock().
**/ staticvoid
i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
{ constunsignedint size = ARRAY_SIZE(i40e_gstrings_queue_stats); conststruct i40e_stats *stats = i40e_gstrings_queue_stats; unsignedint start; unsignedint i;
/* To avoid invalid statistics values, ensure that we keep retrying * the copy until we get a consistent value according to * u64_stats_fetch_retry. But first, make sure our ring is * non-null before attempting to access its syncp.
*/ do {
start = !ring ? 0 : u64_stats_fetch_begin(&ring->syncp); for (i = 0; i < size; i++) {
i40e_add_one_ethtool_stat(&(*data)[i], ring,
&stats[i]);
}
} while (ring && u64_stats_fetch_retry(&ring->syncp, start));
/* Once we successfully copy the stats in, update the data pointer */
*data += size;
}
/** * __i40e_add_stat_strings - copy stat strings into ethtool buffer * @p: ethtool supplied buffer * @stats: stat definitions array * @size: size of the stats array * * Format and copy the strings described by stats into the buffer pointed at * by p.
**/ staticvoid __i40e_add_stat_strings(u8 **p, conststruct i40e_stats stats[], constunsignedint size, ...)
{ unsignedint i;
/** * i40e_add_stat_strings - copy stat strings into ethtool buffer * @p: ethtool supplied buffer * @stats: stat definitions array * * Format and copy the strings described by the const static stats value into * the buffer pointed at by p. * * The parameter @stats is evaluated twice, so parameters with side effects * should be avoided. Additionally, stats must be an array such that * ARRAY_SIZE can be called on it.
**/ #define i40e_add_stat_strings(p, stats, ...) \
__i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
/* These PF_STATs might look like duplicates of some NETDEV_STATs, * but they are separate. This device supports Virtualization, and * as such might have several netdevs supporting VMDq and FCoE going * through a single port. The NETDEV_STATs are for individual netdevs * seen at the top of the stack, and the PF_STATs are for the physical * function at the bottom of the stack hosting those netdevs. * * The PF_STATs are appended to the netdev stats only when ethtool -S * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
*/ staticconststruct i40e_stats i40e_gstrings_stats[] = {
I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
I40E_PF_STAT("port.rx_discards", stats.eth.rx_discards),
I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
I40E_PF_STAT("port.arq_overflows", arq_overflows),
I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
staticconstchar i40e_gstrings_test[][ETH_GSTRING_LEN] = { "Register test (offline)", "Eeprom test (offline)", "Interrupt test (offline)", "Link test (on/offline)"
};
/** * i40e_partition_setting_complaint - generic complaint for MFP restriction * @pf: the PF struct
**/ staticvoid i40e_partition_setting_complaint(struct i40e_pf *pf)
{
dev_info(&pf->pdev->dev, "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
}
/** * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes * @pf: PF struct with phy_types * @ks: ethtool link ksettings struct to fill out *
**/ staticvoid i40e_phy_type_to_ethtool(struct i40e_pf *pf, struct ethtool_link_ksettings *ks)
{ struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
u64 phy_types = pf->hw.phy.phy_types;
/** * i40e_get_settings_link_up - Get the Link settings for when link is up * @hw: hw structure * @ks: ethtool ksettings to fill in * @netdev: network interface device structure * @pf: pointer to physical function struct
**/ staticvoid i40e_get_settings_link_up(struct i40e_hw *hw, struct ethtool_link_ksettings *ks, struct net_device *netdev, struct i40e_pf *pf)
{ struct i40e_link_status *hw_link_info = &hw->phy.link_info; struct ethtool_link_ksettings cap_ksettings;
u32 link_speed = hw_link_info->link_speed;
/* Initialize supported and advertised settings based on phy settings */ switch (hw_link_info->phy_type) { case I40E_PHY_TYPE_40GBASE_CR4: case I40E_PHY_TYPE_40GBASE_CR4_CU:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseCR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseCR4_Full); break; case I40E_PHY_TYPE_XLAUI: case I40E_PHY_TYPE_XLPPI: case I40E_PHY_TYPE_40GBASE_AOC:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseCR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseCR4_Full); break; case I40E_PHY_TYPE_40GBASE_SR4:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseSR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseSR4_Full); break; case I40E_PHY_TYPE_40GBASE_LR4:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseLR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseLR4_Full); break; case I40E_PHY_TYPE_25GBASE_SR: case I40E_PHY_TYPE_25GBASE_LR: case I40E_PHY_TYPE_10GBASE_SR: case I40E_PHY_TYPE_10GBASE_LR: case I40E_PHY_TYPE_1000BASE_SX: case I40E_PHY_TYPE_1000BASE_LX:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
25000baseSR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
25000baseSR_Full);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseSR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseSR_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseLR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseLR_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseX_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseX_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseT_Full); if (hw_link_info->module_type[2] &
I40E_MODULE_TYPE_1000BASE_SX ||
hw_link_info->module_type[2] &
I40E_MODULE_TYPE_1000BASE_LX) {
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full); if (hw_link_info->requested_speeds &
I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(
ks, advertising, 1000baseT_Full);
} if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full); break; case I40E_PHY_TYPE_10GBASE_T: case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS: case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS: case I40E_PHY_TYPE_1000BASE_T: case I40E_PHY_TYPE_100BASE_TX:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
5000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
2500baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
100baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
5000baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
2500baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
100baseT_Full); break; case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full); break; case I40E_PHY_TYPE_10GBASE_CR1_CU: case I40E_PHY_TYPE_10GBASE_CR1:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full); break; case I40E_PHY_TYPE_XAUI: case I40E_PHY_TYPE_XFI: case I40E_PHY_TYPE_SFI: case I40E_PHY_TYPE_10GBASE_SFPP_CU: case I40E_PHY_TYPE_10GBASE_AOC:
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); break; case I40E_PHY_TYPE_SGMII:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full); if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full); if (test_bit(I40E_HW_CAP_100M_SGMII, pf->hw.caps)) {
ethtool_link_ksettings_add_link_mode(ks, supported,
100baseT_Full); if (hw_link_info->requested_speeds &
I40E_LINK_SPEED_100MB)
ethtool_link_ksettings_add_link_mode(
ks, advertising, 100baseT_Full);
} break; case I40E_PHY_TYPE_40GBASE_KR4: case I40E_PHY_TYPE_25GBASE_KR: case I40E_PHY_TYPE_20GBASE_KR2: case I40E_PHY_TYPE_10GBASE_KR: case I40E_PHY_TYPE_10GBASE_KX4: case I40E_PHY_TYPE_1000BASE_KX:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseKR4_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
25000baseKR_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
20000baseKR2_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseKR_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseKX4_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseKX_Full);
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseKR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
25000baseKR_Full);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
ethtool_link_ksettings_add_link_mode(ks, advertising,
20000baseKR2_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseKR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseKX4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseKX_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); break; case I40E_PHY_TYPE_25GBASE_CR:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
25000baseCR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
25000baseCR_Full);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
break; case I40E_PHY_TYPE_25GBASE_AOC: case I40E_PHY_TYPE_25GBASE_ACC:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
25000baseCR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
25000baseCR_Full);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseCR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseCR_Full); break; default: /* if we got here and link is up something bad is afoot */
netdev_info(netdev, "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
hw_link_info->phy_type);
}
/* Now that we've worked out everything that could be supported by the * current PHY type, get what is supported by the NVM and intersect * them to get what is truly supported
*/
memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
i40e_phy_type_to_ethtool(pf, &cap_ksettings);
ethtool_intersect_link_masks(ks, &cap_ksettings);
/* Set speed and duplex */ switch (link_speed) { case I40E_LINK_SPEED_40GB:
ks->base.speed = SPEED_40000; break; case I40E_LINK_SPEED_25GB:
ks->base.speed = SPEED_25000; break; case I40E_LINK_SPEED_20GB:
ks->base.speed = SPEED_20000; break; case I40E_LINK_SPEED_10GB:
ks->base.speed = SPEED_10000; break; case I40E_LINK_SPEED_5GB:
ks->base.speed = SPEED_5000; break; case I40E_LINK_SPEED_2_5GB:
ks->base.speed = SPEED_2500; break; case I40E_LINK_SPEED_1GB:
ks->base.speed = SPEED_1000; break; case I40E_LINK_SPEED_100MB:
ks->base.speed = SPEED_100; break; default:
ks->base.speed = SPEED_UNKNOWN; break;
}
ks->base.duplex = DUPLEX_FULL;
}
/** * i40e_get_settings_link_down - Get the Link settings for when link is down * @hw: hw structure * @ks: ethtool ksettings to fill in * @pf: pointer to physical function struct * * Reports link settings that can be determined when link is down
**/ staticvoid i40e_get_settings_link_down(struct i40e_hw *hw, struct ethtool_link_ksettings *ks, struct i40e_pf *pf)
{ /* link is down and the driver needs to fall back on * supported phy types to figure out what info to display
*/
i40e_phy_type_to_ethtool(pf, ks);
/* With no link speed and duplex are unknown */
ks->base.speed = SPEED_UNKNOWN;
ks->base.duplex = DUPLEX_UNKNOWN;
}
if (link_up)
i40e_get_settings_link_up(hw, ks, netdev, pf); else
i40e_get_settings_link_down(hw, ks, pf);
/* Now set the settings that don't rely on link being up/down */ /* Set autoneg settings */
ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
AUTONEG_ENABLE : AUTONEG_DISABLE);
/* Set media type settings */ switch (hw->phy.media_type) { case I40E_MEDIA_TYPE_BACKPLANE:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
Backplane);
ks->base.port = PORT_NONE; break; case I40E_MEDIA_TYPE_BASET:
ethtool_link_ksettings_add_link_mode(ks, supported, TP);
ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
ks->base.port = PORT_TP; break; case I40E_MEDIA_TYPE_DA: case I40E_MEDIA_TYPE_CX4:
ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
ks->base.port = PORT_DA; break; case I40E_MEDIA_TYPE_FIBER:
ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
ks->base.port = PORT_FIBRE; break; case I40E_MEDIA_TYPE_UNKNOWN: default:
ks->base.port = PORT_OTHER; break;
}
/* Set flow control settings */
ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
/* save autoneg out of ksettings */
autoneg = copy_ks.base.autoneg;
speed = copy_ks.base.speed;
/* get our own copy of the bits to check against */
memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
safe_ks.base.cmd = copy_ks.base.cmd;
safe_ks.base.link_mode_masks_nwords =
copy_ks.base.link_mode_masks_nwords;
i40e_get_link_ksettings(netdev, &safe_ks);
/* Get link modes supported by hardware and check against modes * requested by the user. Return an error if unsupported mode was set.
*/ if (!bitmap_subset(copy_ks.link_modes.advertising,
safe_ks.link_modes.supported,
__ETHTOOL_LINK_MODE_MASK_NBITS)) return -EINVAL;
/* set autoneg back to what it currently is */
copy_ks.base.autoneg = safe_ks.base.autoneg;
copy_ks.base.speed = safe_ks.base.speed;
while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
timeout--; if (!timeout) return -EBUSY;
usleep_range(1000, 2000);
}
/* Get the current phy config */
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL); if (status) {
err = -EAGAIN; goto done;
}
/* Copy abilities to config in case autoneg is not * set below
*/
memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
config.abilities = abilities.abilities;
/* Check autoneg */ if (autoneg == AUTONEG_ENABLE) { /* If autoneg was not already enabled */ if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) { /* If autoneg is not supported, return error */ if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
supported,
Autoneg)) {
netdev_info(netdev, "Autoneg not supported on this phy\n");
err = -EINVAL; goto done;
} /* Autoneg is allowed to change */
config.abilities = abilities.abilities |
I40E_AQ_PHY_ENABLE_AN;
autoneg_changed = true;
}
} else { /* If autoneg is currently enabled */ if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) { /* If autoneg is supported 10GBASE_T is the only PHY * that can disable it, so otherwise return error
*/ if (ethtool_link_ksettings_test_link_mode(&safe_ks,
supported,
Autoneg) &&
hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
err = -EINVAL; goto done;
} /* Autoneg is allowed to change */
config.abilities = abilities.abilities &
~I40E_AQ_PHY_ENABLE_AN;
autoneg_changed = true;
}
}
/* Autonegotiation must be disabled to change speed */ if ((speed != SPEED_UNKNOWN && safe_ks.base.speed != speed) &&
(autoneg == AUTONEG_DISABLE ||
(safe_ks.base.autoneg == AUTONEG_DISABLE && !autoneg_changed))) {
link_speed = i40e_speed_to_link_speed(speed, ks); if (link_speed == I40E_LINK_SPEED_UNKNOWN) {
netdev_info(netdev, "Given speed is not supported\n");
err = -EOPNOTSUPP; goto done;
} else {
config.link_speed = link_speed;
}
} else { if (safe_ks.base.speed != speed) {
netdev_info(netdev, "Unable to set speed, disable autoneg\n");
err = -EOPNOTSUPP; goto done;
}
}
/* If speed didn't get set, set it to what it currently is. * This is needed because if advertise is 0 (as it is when autoneg * is disabled) then speed won't get set.
*/ if (!config.link_speed)
config.link_speed = abilities.link_speed; if (autoneg_changed || abilities.link_speed != config.link_speed) { /* copy over the rest of the abilities */
config.phy_type = abilities.phy_type;
config.phy_type_ext = abilities.phy_type_ext;
config.eee_capability = abilities.eee_capability;
config.eeer = abilities.eeer_val;
config.low_power_ctrl = abilities.d3_lpan;
config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
I40E_AQ_PHY_FEC_CONFIG_MASK;
/* save the requested speeds */
hw->phy.link_info.requested_speeds = config.link_speed; /* set link and auto negotiation so changes take effect */
config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK; /* If link is up put link down */ if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) { /* Tell the OS link is going down, the link will go * back up when fw says it is ready asynchronously
*/
i40e_print_link_message(vsi, false);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
}
/* make the aq call */
status = i40e_aq_set_phy_config(hw, &config, NULL); if (status) {
netdev_info(netdev, "Set phy config failed, err %pe aq_err %s\n",
ERR_PTR(status),
libie_aq_str(hw->aq.asq_last_status));
err = -EAGAIN; goto done;
}
status = i40e_update_link_info(hw); if (status)
netdev_dbg(netdev, "Updating link info failed with err %pe aq_err %s\n",
ERR_PTR(status),
libie_aq_str(hw->aq.asq_last_status));
/* Changing the port's flow control is not supported if this isn't the * port's controlling PF
*/ if (hw->partition_id != 1) {
i40e_partition_setting_complaint(pf); return -EOPNOTSUPP;
}
if (vsi->type != I40E_VSI_MAIN) return -EOPNOTSUPP;
/* If we have link and don't have autoneg */ if (!test_bit(__I40E_DOWN, pf->state) && !is_an) { /* Send message that it might not necessarily work*/
netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
}
if (dcbx_cfg->pfc.pfcenable) {
netdev_info(netdev, "Priority flow control enabled. Cannot set link flow control.\n"); return -EOPNOTSUPP;
}
/* Tell the OS link is going down, the link will go back up when fw * says it is ready asynchronously
*/
i40e_print_link_message(vsi, false);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
/* Set the fc mode and only restart an if link is up*/
status = i40e_set_fc(hw, &aq_failures, link_up);
if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %pe aq_err %s\n",
ERR_PTR(status),
libie_aq_str(hw->aq.asq_last_status));
err = -EAGAIN;
} if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
netdev_info(netdev, "Set fc failed on the set_phy_config call with err %pe aq_err %s\n",
ERR_PTR(status),
libie_aq_str(hw->aq.asq_last_status));
err = -EAGAIN;
} if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
netdev_info(netdev, "Set fc failed on the get_link_info call with err %pe aq_err %s\n",
ERR_PTR(status),
libie_aq_str(hw->aq.asq_last_status));
err = -EAGAIN;
}
if (!test_bit(__I40E_DOWN, pf->state) && is_an) { /* Give it a little more time to try to come back */
msleep(75); if (!test_bit(__I40E_DOWN, pf->state)) return i40e_nway_reset(netdev);
}
/* Tell ethtool which driver-version-specific regs output we have. * * At some point, if we have ethtool doing special formatting of * this data, it will rely on this version number to know how to * interpret things. Hence, this needs to be updated if/when the * diags register table is changed.
*/
regs->version = 1;
/* loop through the diags reg table for what to print */
ri = 0; for (i = 0; i40e_reg_list[i].offset != 0; i++) { for (j = 0; j < i40e_reg_list[i].elements; j++) {
reg = i40e_reg_list[i].offset
+ (j * i40e_reg_list[i].stride);
reg_buf[ri++] = rd32(hw, reg);
}
}
/* if nothing to do return success */ if ((new_tx_count == vsi->tx_rings[0]->count) &&
(new_rx_count == vsi->rx_rings[0]->count)) return 0;
/* If there is a AF_XDP page pool attached to any of Rx rings, * disallow changing the number of descriptors -- regardless * if the netdev is running or not.
*/ if (i40e_xsk_any_rx_ring_enabled(vsi)) return -EBUSY;
while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
timeout--; if (!timeout) return -EBUSY;
usleep_range(1000, 2000);
}
if (!netif_running(vsi->netdev)) { /* simple case - set for the next time the netdev is started */ for (i = 0; i < vsi->num_queue_pairs; i++) {
vsi->tx_rings[i]->count = new_tx_count;
vsi->rx_rings[i]->count = new_rx_count; if (i40e_enabled_xdp_vsi(vsi))
vsi->xdp_rings[i]->count = new_tx_count;
}
vsi->num_tx_desc = new_tx_count;
vsi->num_rx_desc = new_rx_count; goto done;
}
/* We can't just free everything and then setup again, * because the ISRs in MSI-X mode get passed pointers * to the Tx and Rx ring structs.
*/
/* alloc updated Tx and XDP Tx resources */
tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
(i40e_enabled_xdp_vsi(vsi) ? 2 : 1); if (new_tx_count != vsi->tx_rings[0]->count) {
netdev_info(netdev, "Changing Tx descriptor count from %d to %d.\n",
vsi->tx_rings[0]->count, new_tx_count);
tx_rings = kcalloc(tx_alloc_queue_pairs, sizeof(struct i40e_ring), GFP_KERNEL); if (!tx_rings) {
err = -ENOMEM; goto done;
}
for (i = 0; i < tx_alloc_queue_pairs; i++) { if (!i40e_active_tx_ring_index(vsi, i)) continue;
tx_rings[i] = *vsi->tx_rings[i];
tx_rings[i].count = new_tx_count; /* the desc and bi pointers will be reallocated in the * setup call
*/
tx_rings[i].desc = NULL;
tx_rings[i].rx_bi = NULL;
err = i40e_setup_tx_descriptors(&tx_rings[i]); if (err) { while (i) {
i--; if (!i40e_active_tx_ring_index(vsi, i)) continue;
i40e_free_tx_resources(&tx_rings[i]);
}
kfree(tx_rings);
tx_rings = NULL;
goto done;
}
}
}
/* alloc updated Rx resources */ if (new_rx_count != vsi->rx_rings[0]->count) {
netdev_info(netdev, "Changing Rx descriptor count from %d to %d\n",
vsi->rx_rings[0]->count, new_rx_count);
rx_rings = kcalloc(vsi->alloc_queue_pairs, sizeof(struct i40e_ring), GFP_KERNEL); if (!rx_rings) {
err = -ENOMEM; goto free_tx;
}
for (i = 0; i < vsi->num_queue_pairs; i++) {
u16 unused;
/* clone ring and setup updated count */
rx_rings[i] = *vsi->rx_rings[i];
rx_rings[i].count = new_rx_count; /* the desc and bi pointers will be reallocated in the * setup call
*/
rx_rings[i].desc = NULL;
rx_rings[i].rx_bi = NULL; /* Clear cloned XDP RX-queue info before setup call */
memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq)); /* this is to allow wr32 to have something to write to * during early allocation of Rx buffers
*/
rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
err = i40e_setup_rx_descriptors(&rx_rings[i]); if (err) goto rx_unwind;
/* now allocate the Rx buffers to make sure the OS * has enough memory, any failure here means abort
*/
unused = I40E_DESC_UNUSED(&rx_rings[i]);
err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
rx_unwind: if (err) { do {
i40e_free_rx_resources(&rx_rings[i]);
} while (i--);
kfree(rx_rings);
rx_rings = NULL;
goto free_tx;
}
}
}
/* Bring interface down, copy in the new ring info, * then restore the interface
*/
i40e_down(vsi);
if (tx_rings) { for (i = 0; i < tx_alloc_queue_pairs; i++) { if (i40e_active_tx_ring_index(vsi, i)) {
i40e_free_tx_resources(vsi->tx_rings[i]);
*vsi->tx_rings[i] = tx_rings[i];
}
}
kfree(tx_rings);
tx_rings = NULL;
}
if (rx_rings) { for (i = 0; i < vsi->num_queue_pairs; i++) {
i40e_free_rx_resources(vsi->rx_rings[i]); /* get the real tail offset */
rx_rings[i].tail = vsi->rx_rings[i]->tail; /* this is to fake out the allocation routine * into thinking it has to realloc everything * but the recycling logic will let us re-use * the buffers allocated above
*/
rx_rings[i].next_to_use = 0;
rx_rings[i].next_to_clean = 0;
rx_rings[i].next_to_alloc = 0; /* do a struct copy */
*vsi->rx_rings[i] = rx_rings[i];
}
kfree(rx_rings);
rx_rings = NULL;
}
free_tx: /* error cleanup if the Rx allocations failed after getting Tx */ if (tx_rings) { for (i = 0; i < tx_alloc_queue_pairs; i++) { if (i40e_active_tx_ring_index(vsi, i))
i40e_free_tx_resources(vsi->tx_rings[i]);
}
kfree(tx_rings);
tx_rings = NULL;
}
done:
clear_bit(__I40E_CONFIG_BUSY, pf->state);
return err;
}
/** * i40e_get_stats_count - return the stats count for a device * @netdev: the netdev to return the count for * * Returns the total number of statistics for this netdev. Note that even * though this is a function, it is required that the count for a specific * netdev must never change. Basing the count on static values such as the * maximum number of queues or the device type is ok. However, the API for * obtaining stats is *not* safe against changes based on non-static * values such as the *current* number of queues, or runtime flags. * * If a statistic is not always enabled, return it as part of the count * anyways, always return its string, and report its value as zero.
**/ staticint i40e_get_stats_count(struct net_device *netdev)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; int stats_len;
/* The number of stats reported for a given net_device must remain * constant throughout the life of that device. * * This is because the API for obtaining the size, strings, and stats * is spread out over three separate ethtool ioctls. There is no safe * way to lock the number of stats across these calls, so we must * assume that they will never change. * * Due to this, we report the maximum number of queues, even if not * every queue is currently configured. Since we always allocate * queues in pairs, we'll just use netdev->num_tx_queues * 2. This * works because the num_tx_queues is set at device creation and never * changes.
*/
stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
switch (sset) { case ETH_SS_TEST: return I40E_TEST_LEN; case ETH_SS_STATS: return i40e_get_stats_count(netdev); case ETH_SS_PRIV_FLAGS: return I40E_PRIV_FLAGS_STR_LEN +
(pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0); default: return -EOPNOTSUPP;
}
}
/** * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure * @tc: the TC statistics in VEB structure (veb->tc_stats) * @i: the index of traffic class in (veb->tc_stats) structure to copy * * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to * one dimensional structure i40e_cp_veb_tc_stats. * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC * statistics for the given TC.
**/ staticstruct i40e_cp_veb_tc_stats
i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsignedint i)
{ struct i40e_cp_veb_tc_stats veb_tc = {
.tc_rx_packets = tc->tc_rx_packets[i],
.tc_rx_bytes = tc->tc_rx_bytes[i],
.tc_tx_packets = tc->tc_tx_packets[i],
.tc_tx_bytes = tc->tc_tx_bytes[i],
};
return veb_tc;
}
/** * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure * @pf: the PF device structure * @i: the priority value to copy * * The PFC stats are found as arrays in pf->stats, which is not easy to pass * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure * of the PFC stats for the given priority.
**/ staticinlinestruct i40e_pfc_stats
i40e_get_pfc_stats(struct i40e_pf *pf, unsignedint i)
{ #define I40E_GET_PFC_STAT(stat, priority) \
.stat = pf->stats.stat[priority]
/** * i40e_get_ethtool_stats - copy stat values into supplied buffer * @netdev: the netdev to collect stats for * @stats: ethtool stats command structure * @data: ethtool supplied buffer * * Copy the stats values for this netdev into the buffer. Expects data to be * pre-allocated to the size returned by i40e_get_stats_count.. Note that all * statistics must be copied in a static order, and the count must not change * for a given netdev. See i40e_get_stats_count for more details. * * If a statistic is not currently valid (such as a disabled queue), this * function reports its value as zero.
**/ staticvoid i40e_get_ethtool_stats(struct net_device *netdev, struct ethtool_stats *stats, u64 *data)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; struct i40e_veb *veb = NULL; unsignedint i; bool veb_stats;
u64 *p = data;
rcu_read_lock(); for (i = 0; i < netdev->num_tx_queues; i++) {
i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
}
rcu_read_unlock();
if (vsi->type != I40E_VSI_MAIN || pf->hw.partition_id != 1) goto check_data_pointer;
veb = i40e_pf_get_main_veb(pf);
veb_stats = veb && test_bit(I40E_FLAG_VEB_STATS_ENA, pf->flags);
if (veb_stats)
i40e_update_veb_stats(veb);
/* If veb stats aren't enabled, pass NULL instead of the veb so that * we initialize stats to zero and update the data pointer * intelligently
*/
i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
i40e_gstrings_veb_stats);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) if (veb_stats) { struct i40e_cp_veb_tc_stats veb_tc =
i40e_get_veb_tc_stats(&veb->tc_stats, i);
/** * i40e_get_stat_strings - copy stat strings into supplied buffer * @netdev: the netdev to collect strings for * @data: supplied buffer to copy strings into * * Copy the strings related to stats for this netdev. Expects data to be * pre-allocated with the size reported by i40e_get_stats_count. Note that the * strings must be copied in a static order and the total count must not * change for a given netdev. See i40e_get_stats_count for more details.
**/ staticvoid i40e_get_stat_strings(struct net_device *netdev, u8 *data)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; unsignedint i;
u8 *p = data;
for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
ethtool_puts(&p, i40e_gstrings_priv_flags[i].flag_string); if (pf->hw.pf_id != 0) return; for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
ethtool_puts(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
}
if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
dev_warn(&pf->pdev->dev, "Cannot start offline testing when PF is in reset state.\n"); goto skip_ol_tests;
}
if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
dev_warn(&pf->pdev->dev, "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n"); goto skip_ol_tests;
}
/* If the device is online then take it offline */ if (if_running) /* indicate we're in test mode */
i40e_close(netdev); else /* This reset does not affect link - if it is * changed to a type of reset that does affect * link then the following link test would have * to be moved to before the reset
*/
i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
eth_test->flags |= ETH_TEST_FL_FAILED;
/* run reg test last, a reset is required after it */ if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
eth_test->flags |= ETH_TEST_FL_FAILED;
/* Offline only tests, not run in online; pass by default */
data[I40E_ETH_TEST_REG] = 0;
data[I40E_ETH_TEST_EEPROM] = 0;
data[I40E_ETH_TEST_INTR] = 0;
}
/* NVM bit on means WoL disabled for the port */
i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
wol->supported = 0;
wol->wolopts = 0;
} else {
wol->supported = WAKE_MAGIC;
wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
}
}
/** * i40e_set_wol - set the WakeOnLAN configuration * @netdev: the netdev in question * @wol: the ethtool WoL setting data
**/ staticint i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_pf *pf = np->vsi->back; struct i40e_vsi *vsi = np->vsi; struct i40e_hw *hw = &pf->hw;
u16 wol_nvm_bits;
/* WoL not supported if this isn't the controlling PF on the port */ if (hw->partition_id != 1) {
i40e_partition_setting_complaint(pf); return -EOPNOTSUPP;
}
if (vsi->type != I40E_VSI_MAIN) return -EOPNOTSUPP;
/* NVM bit on means WoL disabled for the port */
i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); if (BIT(hw->port) & wol_nvm_bits) return -EOPNOTSUPP;
/* only magic packet is supported */ if (wol->wolopts & ~WAKE_MAGIC) return -EOPNOTSUPP;
/* is this a new value? */ if (pf->wol_en != !!wol->wolopts) {
pf->wol_en = !!wol->wolopts;
device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
}
switch (state) { case ETHTOOL_ID_ACTIVE: if (!test_bit(I40E_HW_CAP_PHY_CONTROLS_LEDS, pf->hw.caps)) {
pf->led_status = i40e_led_get(hw);
} else { if (!test_bit(I40E_HW_CAP_AQ_PHY_ACCESS, hw->caps))
i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
NULL);
ret = i40e_led_get_phy(hw, &temp_status,
&pf->phy_led_val);
pf->led_status = temp_status;
} return blink_freq; case ETHTOOL_ID_ON: if (!test_bit(I40E_HW_CAP_PHY_CONTROLS_LEDS, pf->hw.caps))
i40e_led_set(hw, 0xf, false); else
ret = i40e_led_set_phy(hw, true, pf->led_status, 0); break; case ETHTOOL_ID_OFF: if (!test_bit(I40E_HW_CAP_PHY_CONTROLS_LEDS, pf->hw.caps))
i40e_led_set(hw, 0x0, false); else
ret = i40e_led_set_phy(hw, false, pf->led_status, 0); break; case ETHTOOL_ID_INACTIVE: if (!test_bit(I40E_HW_CAP_PHY_CONTROLS_LEDS, pf->hw.caps)) {
i40e_led_set(hw, pf->led_status, false);
} else {
ret = i40e_led_set_phy(hw, false, pf->led_status,
(pf->phy_led_val |
I40E_PHY_LED_MODE_ORIG)); if (!test_bit(I40E_HW_CAP_AQ_PHY_ACCESS, hw->caps))
i40e_aq_set_phy_debug(hw, 0, NULL);
} break; default: break;
} if (ret) return -ENOENT; else return 0;
}
/* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also * 125us (8000 interrupts per second) == ITR(62)
*/
/** * __i40e_get_coalesce - get per-queue coalesce settings * @netdev: the netdev to check * @ec: ethtool coalesce data structure * @queue: which queue to pick * * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs * are per queue. If queue is <0 then we default to queue 0 as the * representative value.
**/ staticint __i40e_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, int queue)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_ring *rx_ring, *tx_ring; struct i40e_vsi *vsi = np->vsi;
/* rx and tx usecs has per queue value. If user doesn't specify the * queue, return queue 0's value to represent.
*/ if (queue < 0)
queue = 0; elseif (queue >= vsi->num_queue_pairs) return -EINVAL;
/* we use the _usecs_high to store/set the interrupt rate limit * that the hardware supports, that almost but not quite * fits the original intent of the ethtool variable, * the rx_coalesce_usecs_high limits total interrupts * per second from both tx/rx sources.
*/
ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
return 0;
}
/** * i40e_get_coalesce - get a netdev's coalesce settings * @netdev: the netdev to check * @ec: ethtool coalesce data structure * @kernel_coal: ethtool CQE mode setting structure * @extack: extack for reporting error messages * * Gets the coalesce settings for a particular netdev. Note that if user has * modified per-queue settings, this only guarantees to represent queue 0. See * __i40e_get_coalesce for more details.
**/ staticint i40e_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack)
{ return __i40e_get_coalesce(netdev, ec, -1);
}
/** * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue * @netdev: netdev structure * @ec: ethtool's coalesce settings * @queue: the particular queue to read * * Will read a specific queue's coalesce settings
**/ staticint i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue, struct ethtool_coalesce *ec)
{ return __i40e_get_coalesce(netdev, ec, queue);
}
/** * i40e_set_itr_per_queue - set ITR values for specific queue * @vsi: the VSI to set values for * @ec: coalesce settings from ethtool * @queue: the queue to modify * * Change the ITR settings for a specific queue.
**/ staticvoid i40e_set_itr_per_queue(struct i40e_vsi *vsi, struct ethtool_coalesce *ec, int queue)
{ struct i40e_ring *rx_ring = vsi->rx_rings[queue]; struct i40e_ring *tx_ring = vsi->tx_rings[queue]; struct i40e_pf *pf = vsi->back; struct i40e_hw *hw = &pf->hw; struct i40e_q_vector *q_vector;
u16 intrl;
/* The interrupt handler itself will take care of programming * the Tx and Rx ITR values based on the values we have entered * into the q_vector, no need to write the values now.
*/
/* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */ if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n"); return -EINVAL;
}
if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
INTRL_REG_TO_USEC(I40E_MAX_INTRL)); return -EINVAL;
}
if (ec->rx_coalesce_usecs != cur_rx_itr &&
ec->use_adaptive_rx_coalesce) {
netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n"); return -EINVAL;
}
if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n"); return -EINVAL;
}
if (ec->tx_coalesce_usecs != cur_tx_itr &&
ec->use_adaptive_tx_coalesce) {
netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n"); return -EINVAL;
}
if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n"); return -EINVAL;
}
if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
ec->rx_coalesce_usecs = I40E_MIN_ITR;
if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
ec->tx_coalesce_usecs = I40E_MIN_ITR;
intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg); if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
vsi->int_rate_limit);
}
/* rx and tx usecs has per queue value. If user doesn't specify the * queue, apply to all queues.
*/ if (queue < 0) { for (i = 0; i < vsi->num_queue_pairs; i++)
i40e_set_itr_per_queue(vsi, ec, i);
} else {
i40e_set_itr_per_queue(vsi, ec, queue);
}
return 0;
}
/** * i40e_set_coalesce - set coalesce settings for every queue on the netdev * @netdev: the netdev to change * @ec: ethtool coalesce settings * @kernel_coal: ethtool CQE mode setting structure * @extack: extack for reporting error messages * * This will set each queue to the same coalesce settings.
**/ staticint i40e_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack)
{ return __i40e_set_coalesce(netdev, ec, -1);
}
/** * i40e_set_per_queue_coalesce - set specific queue's coalesce settings * @netdev: the netdev to change * @ec: ethtool's coalesce settings * @queue: the queue to change * * Sets the specified queue's coalesce settings.
**/ staticint i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue, struct ethtool_coalesce *ec)
{ return __i40e_set_coalesce(netdev, ec, queue);
}
switch (cmd->flow_type) { case TCP_V4_FLOW:
flow_pctype = LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP; break; case UDP_V4_FLOW:
flow_pctype = LIBIE_FILTER_PCTYPE_NONF_IPV4_UDP; break; case TCP_V6_FLOW:
flow_pctype = LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP; break; case UDP_V6_FLOW:
flow_pctype = LIBIE_FILTER_PCTYPE_NONF_IPV6_UDP; break; case SCTP_V4_FLOW: case AH_ESP_V4_FLOW: case AH_V4_FLOW: case ESP_V4_FLOW: case IPV4_FLOW: case SCTP_V6_FLOW: case AH_ESP_V6_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case IPV6_FLOW: /* Default is src/dest for IP, no matter the L4 hashing */
cmd->data |= RXH_IP_SRC | RXH_IP_DST; break; default: return -EINVAL;
}
/* Read flow based hash input set register */ if (flow_pctype) {
i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
flow_pctype)) |
((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
flow_pctype)) << 32);
}
/* Process bits of hash input set */ if (i_set) { if (i_set & I40E_L4_SRC_MASK)
cmd->data |= RXH_L4_B_0_1; if (i_set & I40E_L4_DST_MASK)
cmd->data |= RXH_L4_B_2_3;
if (cmd->flow_type == TCP_V4_FLOW ||
cmd->flow_type == UDP_V4_FLOW) { if (hw->mac.type == I40E_MAC_X722) { if (i_set & I40E_X722_L3_SRC_MASK)
cmd->data |= RXH_IP_SRC; if (i_set & I40E_X722_L3_DST_MASK)
cmd->data |= RXH_IP_DST;
} else { if (i_set & I40E_L3_SRC_MASK)
cmd->data |= RXH_IP_SRC; if (i_set & I40E_L3_DST_MASK)
cmd->data |= RXH_IP_DST;
}
} elseif (cmd->flow_type == TCP_V6_FLOW ||
cmd->flow_type == UDP_V6_FLOW) { if (i_set & I40E_L3_V6_SRC_MASK)
cmd->data |= RXH_IP_SRC; if (i_set & I40E_L3_V6_DST_MASK)
cmd->data |= RXH_IP_DST;
}
}
return 0;
}
/** * i40e_check_mask - Check whether a mask field is set * @mask: the full mask value * @field: mask of the field to check * * If the given mask is fully set, return positive value. If the mask for the * field is fully unset, return zero. Otherwise return a negative error code.
**/ staticint i40e_check_mask(u64 mask, u64 field)
{
u64 value = mask & field;
/** * i40e_parse_rx_flow_user_data - Deconstruct user-defined data * @fsp: pointer to rx flow specification * @data: pointer to userdef data structure for storage * * Read the user-defined data and deconstruct the value into a structure. No * other code should read the user-defined data, so as to ensure that every * place consistently reads the value correctly. * * The user-defined field is a 64bit Big Endian format value, which we * deconstruct by reading bits or bit fields from it. Single bit flags shall * be defined starting from the highest bits, while small bit field values * shall be defined starting from the lowest bits. * * Returns 0 if the data is valid, and non-zero if the userdef data is invalid * and the filter should be rejected. The data structure will always be * modified even if FLOW_EXT is not set. *
**/ staticint i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, struct i40e_rx_flow_userdef *data)
{
u64 value, mask; int valid;
/* Zero memory first so it's always consistent. */
memset(data, 0, sizeof(*data));
if (!(fsp->flow_type & FLOW_EXT)) return 0;
value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
/** * i40e_fill_rx_flow_user_data - Fill in user-defined data field * @fsp: pointer to rx_flow specification * @data: pointer to return userdef data * * Reads the userdef data structure and properly fills in the user defined * fields of the rx_flow_spec.
**/ staticvoid i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, struct i40e_rx_flow_userdef *data)
{
u64 value = 0, mask = 0;
if (data->flex_filter) {
value |= data->flex_word;
value |= (u64)data->flex_offset << 16;
mask |= I40E_USERDEF_FLEX_FILTER;
}
/** * i40e_get_ethtool_fdir_all - Populates the rule count of a command * @pf: Pointer to the physical function struct * @cmd: The command to get or set Rx flow classification rules * @rule_locs: Array of used rule locations * * This function populates both the total and actual rule count of * the ethtool flow classification command * * Returns 0 on success or -EMSGSIZE if entry not found
**/ staticint i40e_get_ethtool_fdir_all(struct i40e_pf *pf, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{ struct i40e_fdir_filter *rule; struct hlist_node *node2; int cnt = 0;
/* report total rule count */
cmd->data = i40e_get_fd_cnt_all(pf);
/** * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow * @pf: Pointer to the physical function struct * @cmd: The command to get or set Rx flow classification rules * * This function looks up a filter based on the Rx flow classification * command and fills the flow spec info for it if found * * Returns 0 on success or -EINVAL if filter not found
**/ staticint i40e_get_ethtool_fdir_entry(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
{ struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs; struct i40e_rx_flow_userdef userdef = {0}; struct i40e_fdir_filter *rule = NULL; struct hlist_node *node2; struct i40e_vsi *vsi;
u64 input_set;
u16 index;
if (fsp->flow_type == IPV6_USER_FLOW ||
fsp->flow_type == UDP_V6_FLOW ||
fsp->flow_type == TCP_V6_FLOW ||
fsp->flow_type == SCTP_V6_FLOW) { /* Reverse the src and dest notion, since the HW views them * from Tx perspective where as the user expects it from * Rx filter view.
*/
fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6, sizeof(__be32) * 4);
memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6, sizeof(__be32) * 4);
} else { /* Reverse the src and dest notion, since the HW views them * from Tx perspective where as the user expects it from * Rx filter view.
*/
fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
}
switch (rule->flow_type) { case SCTP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_SCTP; break; case TCP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP; break; case UDP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_UDP; break; case SCTP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_SCTP; break; case TCP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP; break; case UDP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_UDP; break; case IP_USER_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER; break; case IPV6_USER_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER; break; default: /* If we have stored a filter with a flow type not listed here * it is almost certainly a driver bug. WARN(), and then * assign the input_set as if all fields are enabled to avoid * reading unassigned memory.
*/
WARN(1, "Missing input set index for flow_type %d\n",
rule->flow_type);
input_set = 0xFFFFFFFFFFFFFFFFULL; goto no_input_set;
}
vsi = i40e_pf_get_main_vsi(pf); if (rule->dest_vsi != vsi->id) {
vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi); if (vsi && vsi->type == I40E_VSI_SRIOV) { /* VFs are zero-indexed by the driver, but ethtool * expects them to be one-indexed, so add one here
*/
u64 ring_vf = vsi->vf_id + 1;
/** * i40e_get_rxnfc - command to get RX flow classification rules * @netdev: network interface device structure * @cmd: ethtool rxnfc command * @rule_locs: pointer to store rule data * * Returns Success if the command is supported.
**/ staticint i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; int ret = -EOPNOTSUPP;
switch (cmd->cmd) { case ETHTOOL_GRXRINGS:
cmd->data = vsi->rss_size;
ret = 0; break; case ETHTOOL_GRXCLSRLCNT:
cmd->rule_cnt = pf->fdir_pf_active_filters; /* report total rule count */
cmd->data = i40e_get_fd_cnt_all(pf);
ret = 0; break; case ETHTOOL_GRXCLSRULE:
ret = i40e_get_ethtool_fdir_entry(pf, cmd); break; case ETHTOOL_GRXCLSRLALL:
ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs); break; default: break;
}
return ret;
}
/** * i40e_get_rss_hash_bits - Read RSS Hash bits from register * @hw: hw structure * @nfc: pointer to user request * @i_setc: bits currently set * * Returns value of bits to be set per user request
**/ static u64 i40e_get_rss_hash_bits(struct i40e_hw *hw, conststruct ethtool_rxfh_fields *nfc,
u64 i_setc)
{
u64 i_set = i_setc;
u64 src_l3 = 0, dst_l3 = 0;
if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
dev_err(&pf->pdev->dev, "Change of RSS hash input set is not supported when MFP mode is enabled\n"); return -EOPNOTSUPP;
}
/* RSS does not support anything other than hashing * to queues on src and dst IPs and ports
*/ if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
RXH_L4_B_0_1 | RXH_L4_B_2_3)) return -EINVAL;
switch (nfc->flow_type) { case TCP_V4_FLOW:
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP, flow_pctypes); if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
pf->hw.caps))
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK,
flow_pctypes); break; case TCP_V6_FLOW:
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP, flow_pctypes); if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
pf->hw.caps))
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK,
flow_pctypes); break; case UDP_V4_FLOW:
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV4_UDP, flow_pctypes); if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
pf->hw.caps)) {
set_bit(LIBIE_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP,
flow_pctypes);
set_bit(LIBIE_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP,
flow_pctypes);
}
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV4); break; case UDP_V6_FLOW:
set_bit(LIBIE_FILTER_PCTYPE_NONF_IPV6_UDP, flow_pctypes); if (test_bit(I40E_HW_CAP_MULTI_TCP_UDP_RSS_PCTYPE,
pf->hw.caps)) {
set_bit(LIBIE_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP,
flow_pctypes);
set_bit(LIBIE_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP,
flow_pctypes);
}
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV6); break; case AH_ESP_V4_FLOW: case AH_V4_FLOW: case ESP_V4_FLOW: case SCTP_V4_FLOW: if ((nfc->data & RXH_L4_B_0_1) ||
(nfc->data & RXH_L4_B_2_3)) return -EINVAL;
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER); break; case AH_ESP_V6_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case SCTP_V6_FLOW: if ((nfc->data & RXH_L4_B_0_1) ||
(nfc->data & RXH_L4_B_2_3)) return -EINVAL;
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER); break; case IPV4_FLOW:
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER) |
BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV4); break; case IPV6_FLOW:
hena |= BIT_ULL(LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER) |
BIT_ULL(LIBIE_FILTER_PCTYPE_FRAG_IPV6); break; default: return -EINVAL;
}
if (bitmap_weight(flow_pctypes, FLOW_PCTYPES_SIZE)) {
u8 flow_id;
/** * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry * @vsi: Pointer to the targeted VSI * @input: The filter to update or NULL to indicate deletion * @sw_idx: Software index to the filter * @cmd: The command to get or set Rx flow classification rules * * This function updates (or deletes) a Flow Director entry from * the hlist of the corresponding PF * * Returns 0 on success
**/ staticint i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, struct i40e_fdir_filter *input,
u16 sw_idx, struct ethtool_rxnfc *cmd)
{ struct i40e_fdir_filter *rule, *parent; struct i40e_pf *pf = vsi->back; struct hlist_node *node2; int err = -EINVAL;
parent = NULL;
rule = NULL;
hlist_for_each_entry_safe(rule, node2,
&pf->fdir_filter_list, fdir_node) { /* hash found, or no matching entry */ if (rule->fd_id >= sw_idx) break;
parent = rule;
}
/* if there is an old rule occupying our place remove it */ if (rule && (rule->fd_id == sw_idx)) { /* Remove this rule, since we're either deleting it, or * replacing it.
*/
err = i40e_add_del_fdir(vsi, rule, false);
hlist_del(&rule->fdir_node);
kfree(rule);
pf->fdir_pf_active_filters--;
}
/* If we weren't given an input, this is a delete, so just return the * error code indicating if there was an entry at the requested slot
*/ if (!input) return err;
/* Otherwise, install the new rule as requested */
INIT_HLIST_NODE(&input->fdir_node);
/* add filter to the list */ if (parent)
hlist_add_behind(&input->fdir_node, &parent->fdir_node); else
hlist_add_head(&input->fdir_node,
&pf->fdir_filter_list);
/* update counts */
pf->fdir_pf_active_filters++;
return 0;
}
/** * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table * @pf: pointer to PF structure * * This function searches the list of filters and determines which FLX_PIT * entries are still required. It will prune any entries which are no longer * in use after the deletion.
**/ staticvoid i40e_prune_flex_pit_list(struct i40e_pf *pf)
{ struct i40e_flex_pit *entry, *tmp; struct i40e_fdir_filter *rule;
/* First, we'll check the l3 table */
list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) { bool found = false;
hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { if (rule->flow_type != IP_USER_FLOW) continue; if (rule->flex_filter &&
rule->flex_offset == entry->src_offset) {
found = true; break;
}
}
/* If we didn't find the filter, then we can prune this entry * from the list.
*/ if (!found) {
list_del(&entry->list);
kfree(entry);
}
}
/* Followed by the L4 table */
list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) { bool found = false;
hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { /* Skip this filter if it's L3, since we already * checked those in the above loop
*/ if (rule->flow_type == IP_USER_FLOW) continue; if (rule->flex_filter &&
rule->flex_offset == entry->src_offset) {
found = true; break;
}
}
/* If we didn't find the filter, then we can prune this entry * from the list.
*/ if (!found) {
list_del(&entry->list);
kfree(entry);
}
}
}
/** * i40e_del_fdir_entry - Deletes a Flow Director filter entry * @vsi: Pointer to the targeted VSI * @cmd: The command to get or set Rx flow classification rules * * The function removes a Flow Director filter entry from the * hlist of the corresponding PF * * Returns 0 on success
*/ staticint i40e_del_fdir_entry(struct i40e_vsi *vsi, struct ethtool_rxnfc *cmd)
{ struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs; struct i40e_pf *pf = vsi->back; int ret = 0;
if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) return -EBUSY;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) return -EBUSY;
ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
i40e_prune_flex_pit_list(pf);
i40e_fdir_check_and_reenable(pf); return ret;
}
/** * i40e_unused_pit_index - Find an unused PIT index for given list * @pf: the PF data structure * * Find the first unused flexible PIT index entry. We search both the L3 and * L4 flexible PIT lists so that the returned index is unique and unused by * either currently programmed L3 or L4 filters. We use a bit field as storage * to track which indexes are already used.
**/ static u8 i40e_unused_pit_index(struct i40e_pf *pf)
{ unsignedlong available_index = 0xFF; struct i40e_flex_pit *entry;
/* We need to make sure that the new index isn't in use by either L3 * or L4 filters so that IP_USER_FLOW filters can program both L3 and * L4 to use the same index.
*/
/** * i40e_find_flex_offset - Find an existing flex src_offset * @flex_pit_list: L3 or L4 flex PIT list * @src_offset: new src_offset to find * * Searches the flex_pit_list for an existing offset. If no offset is * currently programmed, then this will return an ERR_PTR if there is no space * to add a new offset, otherwise it returns NULL.
**/ static struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
u16 src_offset)
{ struct i40e_flex_pit *entry; int size = 0;
/* Search for the src_offset first. If we find a matching entry * already programmed, we can simply re-use it.
*/
list_for_each_entry(entry, flex_pit_list, list) {
size++; if (entry->src_offset == src_offset) return entry;
}
/* If we haven't found an entry yet, then the provided src offset has * not yet been programmed. We will program the src offset later on, * but we need to indicate whether there is enough space to do so * here. We'll make use of ERR_PTR for this purpose.
*/ if (size >= I40E_FLEX_PIT_TABLE_SIZE) return ERR_PTR(-ENOSPC);
return NULL;
}
/** * i40e_add_flex_offset - Add src_offset to flex PIT table list * @flex_pit_list: L3 or L4 flex PIT list * @src_offset: new src_offset to add * @pit_index: the PIT index to program * * This function programs the new src_offset to the list. It is expected that * i40e_find_flex_offset has already been tried and returned NULL, indicating * that this offset is not programmed, and that the list has enough space to * store another offset. * * Returns 0 on success, and negative value on error.
**/ staticint i40e_add_flex_offset(struct list_head *flex_pit_list,
u16 src_offset,
u8 pit_index)
{ struct i40e_flex_pit *new_pit, *entry;
new_pit = kzalloc(sizeof(*entry), GFP_KERNEL); if (!new_pit) return -ENOMEM;
/* We need to insert this item such that the list is sorted by * src_offset in ascending order.
*/
list_for_each_entry(entry, flex_pit_list, list) { if (new_pit->src_offset < entry->src_offset) {
list_add_tail(&new_pit->list, &entry->list); return 0;
}
/* If we found an entry with our offset already programmed we * can simply return here, after freeing the memory. However, * if the pit_index does not match we need to report an error.
*/ if (new_pit->src_offset == entry->src_offset) { int err = 0;
/* If the PIT index is not the same we can't re-use * the entry, so we must report an error.
*/ if (new_pit->pit_index != entry->pit_index)
err = -EINVAL;
kfree(new_pit); return err;
}
}
/* If we reached here, then we haven't yet added the item. This means * that we should add the item at the end of the list.
*/
list_add_tail(&new_pit->list, flex_pit_list); return 0;
}
/** * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table * @pf: Pointer to the PF structure * @flex_pit_list: list of flexible src offsets in use * @flex_pit_start: index to first entry for this section of the table * * In order to handle flexible data, the hardware uses a table of values * called the FLX_PIT table. This table is used to indicate which sections of * the input correspond to what PIT index values. Unfortunately, hardware is * very restrictive about programming this table. Entries must be ordered by * src_offset in ascending order, without duplicates. Additionally, unused * entries must be set to the unused index value, and must have valid size and * length according to the src_offset ordering. * * This function will reprogram the FLX_PIT register from a book-keeping * structure that we guarantee is already ordered correctly, and has no more * than 3 entries. * * To make things easier, we only support flexible values of one word length, * rather than allowing variable length flexible values.
**/ staticvoid __i40e_reprogram_flex_pit(struct i40e_pf *pf, struct list_head *flex_pit_list, int flex_pit_start)
{ struct i40e_flex_pit *entry = NULL;
u16 last_offset = 0; int i = 0, j = 0;
/* First, loop over the list of flex PIT entries, and reprogram the * registers.
*/
list_for_each_entry(entry, flex_pit_list, list) { /* We have to be careful when programming values for the * largest SRC_OFFSET value. It is possible that adding * additional empty values at the end would overflow the space * for the SRC_OFFSET in the FLX_PIT register. To avoid this, * we check here and add the empty values prior to adding the * largest value. * * To determine this, we will use a loop from i+1 to 3, which * will determine whether the unused entries would have valid * SRC_OFFSET. Note that there cannot be extra entries past * this value, because the only valid values would have been * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not * have been added to the list in the first place.
*/ for (j = i + 1; j < 3; j++) {
u16 offset = entry->src_offset + j; int index = flex_pit_start + i;
u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
1,
offset - 3);
/* Now, we can program the actual value into the table */
i40e_write_rx_ctl(&pf->hw,
I40E_PRTQF_FLX_PIT(flex_pit_start + i),
I40E_FLEX_PREP_VAL(entry->pit_index + 50,
1,
entry->src_offset));
i++;
}
/* In order to program the last entries in the table, we need to * determine the valid offset. If the list is empty, we'll just start * with 0. Otherwise, we'll start with the last item offset and add 1. * This ensures that all entries have valid sizes. If we don't do this * correctly, the hardware will disable flexible field parsing.
*/ if (!list_empty(flex_pit_list))
last_offset = list_prev_entry(entry, list)->src_offset + 1;
for (; i < 3; i++, last_offset++) {
i40e_write_rx_ctl(&pf->hw,
I40E_PRTQF_FLX_PIT(flex_pit_start + i),
I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
1,
last_offset));
}
}
/** * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change * @pf: pointer to the PF structure * * This function reprograms both the L3 and L4 FLX_PIT tables. See the * internal helper function for implementation details.
**/ staticvoid i40e_reprogram_flex_pit(struct i40e_pf *pf)
{
__i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
I40E_FLEX_PIT_IDX_START_L3);
/* We also need to program the L3 and L4 GLQF ORT register */
i40e_write_rx_ctl(&pf->hw,
I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3, 1));
/** * i40e_flow_str - Converts a flow_type into a human readable string * @fsp: the flow specification * * Currently only flow types we support are included here, and the string * value attempts to match what ethtool would use to configure this flow type.
**/ staticconstchar *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
{ switch (fsp->flow_type & ~FLOW_EXT) { case TCP_V4_FLOW: return"tcp4"; case UDP_V4_FLOW: return"udp4"; case SCTP_V4_FLOW: return"sctp4"; case IP_USER_FLOW: return"ip4"; case TCP_V6_FLOW: return"tcp6"; case UDP_V6_FLOW: return"udp6"; case SCTP_V6_FLOW: return"sctp6"; case IPV6_USER_FLOW: return"ip6"; default: return"unknown";
}
}
/** * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index * @pit_index: PIT index to convert * * Returns the mask for a given PIT index. Will return 0 if the pit_index is * of range.
**/ static u64 i40e_pit_index_to_mask(int pit_index)
{ switch (pit_index) { case 0: return I40E_FLEX_50_MASK; case 1: return I40E_FLEX_51_MASK; case 2: return I40E_FLEX_52_MASK; case 3: return I40E_FLEX_53_MASK; case 4: return I40E_FLEX_54_MASK; case 5: return I40E_FLEX_55_MASK; case 6: return I40E_FLEX_56_MASK; case 7: return I40E_FLEX_57_MASK; default: return 0;
}
}
/** * i40e_print_input_set - Show changes between two input sets * @vsi: the vsi being configured * @old: the old input set * @new: the new input set * * Print the difference between old and new input sets by showing which series * of words are toggled on or off. Only displays the bits we actually support * changing.
**/ staticvoid i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
{ struct i40e_pf *pf = vsi->back; bool old_value, new_value; int i;
/** * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid * @vsi: pointer to the targeted VSI * @fsp: pointer to Rx flow specification * @userdef: userdefined data from flow specification * * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support * for partial matches exists with a few limitations. First, hardware only * supports masking by word boundary (2 bytes) and not per individual bit. * Second, hardware is limited to using one mask for a flow type and cannot * use a separate mask for each filter. * * To support these limitations, if we already have a configured filter for * the specified type, this function enforces that new filters of the type * match the configured input set. Otherwise, if we do not have a filter of * the specified type, we allow the input set to be updated to match the * desired filter. * * To help ensure that administrators understand why filters weren't displayed * as supported, we print a diagnostic message displaying how the input set * would change and warning to delete the preexisting filters if required. * * Returns 0 on successful input set match, and a negative return code on * failure.
**/ staticint i40e_check_fdir_input_set(struct i40e_vsi *vsi, struct ethtool_rx_flow_spec *fsp, struct i40e_rx_flow_userdef *userdef)
{ staticconst __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
cpu_to_be32(0xffffffff)}; struct ethtool_tcpip6_spec *tcp_ip6_spec; struct ethtool_usrip6_spec *usr_ip6_spec; struct ethtool_tcpip4_spec *tcp_ip4_spec; struct ethtool_usrip4_spec *usr_ip4_spec; struct i40e_pf *pf = vsi->back;
u64 current_mask, new_mask; bool new_flex_offset = false; bool flex_l3 = false;
u16 *fdir_filter_count;
u16 index, src_offset = 0;
u8 pit_index = 0; int err;
switch (fsp->flow_type & ~FLOW_EXT) { case SCTP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_SCTP;
fdir_filter_count = &pf->fd_sctp4_filter_cnt; break; case TCP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_TCP;
fdir_filter_count = &pf->fd_tcp4_filter_cnt; break; case UDP_V4_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_UDP;
fdir_filter_count = &pf->fd_udp4_filter_cnt; break; case SCTP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_SCTP;
fdir_filter_count = &pf->fd_sctp6_filter_cnt; break; case TCP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_TCP;
fdir_filter_count = &pf->fd_tcp6_filter_cnt; break; case UDP_V6_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_UDP;
fdir_filter_count = &pf->fd_udp6_filter_cnt; break; case IP_USER_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER;
fdir_filter_count = &pf->fd_ip4_filter_cnt;
flex_l3 = true; break; case IPV6_USER_FLOW:
index = LIBIE_FILTER_PCTYPE_NONF_IPV6_OTHER;
fdir_filter_count = &pf->fd_ip6_filter_cnt;
flex_l3 = true; break; default: return -EOPNOTSUPP;
}
/* Read the current input set from register memory. */
current_mask = i40e_read_fd_input_set(pf, index);
new_mask = current_mask;
/* Determine, if any, the required changes to the input set in order * to support the provided mask. * * Hardware only supports masking at word (2 byte) granularity and does * not support full bitwise masking. This implementation simplifies * even further and only supports fully enabled or fully disabled * masks for each field, even though we could split the ip4src and * ip4dst fields.
*/ switch (fsp->flow_type & ~FLOW_EXT) { case SCTP_V4_FLOW:
new_mask &= ~I40E_VERIFY_TAG_MASK;
fallthrough; case TCP_V4_FLOW: case UDP_V4_FLOW:
tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
/* L4 source port */ if (tcp_ip4_spec->psrc == htons(0xFFFF))
new_mask |= I40E_L4_SRC_MASK; elseif (!tcp_ip4_spec->psrc)
new_mask &= ~I40E_L4_SRC_MASK; else return -EOPNOTSUPP;
/* L4 destination port */ if (tcp_ip4_spec->pdst == htons(0xFFFF))
new_mask |= I40E_L4_DST_MASK; elseif (!tcp_ip4_spec->pdst)
new_mask &= ~I40E_L4_DST_MASK; else return -EOPNOTSUPP;
/* Filtering on Type of Service is not supported. */ if (tcp_ip4_spec->tos) return -EOPNOTSUPP;
break; case SCTP_V6_FLOW:
new_mask &= ~I40E_VERIFY_TAG_MASK;
fallthrough; case TCP_V6_FLOW: case UDP_V6_FLOW:
tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
/* Check if user provided IPv6 source address. */ if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_SRC_MASK; elseif (ipv6_addr_any((struct in6_addr *)
&tcp_ip6_spec->ip6src))
new_mask &= ~I40E_L3_V6_SRC_MASK; else return -EOPNOTSUPP;
/* Check if user provided destination address. */ if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_DST_MASK; elseif (ipv6_addr_any((struct in6_addr *)
&tcp_ip6_spec->ip6dst))
new_mask &= ~I40E_L3_V6_DST_MASK; else return -EOPNOTSUPP;
/* L4 source port */ if (tcp_ip6_spec->psrc == htons(0xFFFF))
new_mask |= I40E_L4_SRC_MASK; elseif (!tcp_ip6_spec->psrc)
new_mask &= ~I40E_L4_SRC_MASK; else return -EOPNOTSUPP;
/* L4 destination port */ if (tcp_ip6_spec->pdst == htons(0xFFFF))
new_mask |= I40E_L4_DST_MASK; elseif (!tcp_ip6_spec->pdst)
new_mask &= ~I40E_L4_DST_MASK; else return -EOPNOTSUPP;
/* Filtering on Traffic Classes is not supported. */ if (tcp_ip6_spec->tclass) return -EOPNOTSUPP; break; case IP_USER_FLOW:
usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
/* First 4 bytes of L4 header */ if (usr_ip4_spec->l4_4_bytes) return -EOPNOTSUPP;
/* Filtering on Type of Service is not supported. */ if (usr_ip4_spec->tos) return -EOPNOTSUPP;
/* Filtering on IP version is not supported */ if (usr_ip4_spec->ip_ver) return -EINVAL;
/* Filtering on L4 protocol is not supported */ if (usr_ip4_spec->proto) return -EINVAL;
break; case IPV6_USER_FLOW:
usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
/* Check if user provided IPv6 source address. */ if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_SRC_MASK; elseif (ipv6_addr_any((struct in6_addr *)
&usr_ip6_spec->ip6src))
new_mask &= ~I40E_L3_V6_SRC_MASK; else return -EOPNOTSUPP;
/* Check if user provided destination address. */ if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_DST_MASK; elseif (ipv6_addr_any((struct in6_addr *)
&usr_ip6_spec->ip6dst))
new_mask &= ~I40E_L3_V6_DST_MASK; else return -EOPNOTSUPP;
if (usr_ip6_spec->l4_4_bytes) return -EOPNOTSUPP;
/* Filtering on Traffic class is not supported. */ if (usr_ip6_spec->tclass) return -EOPNOTSUPP;
/* Filtering on L4 protocol is not supported */ if (usr_ip6_spec->l4_proto) return -EINVAL;
break; default: return -EOPNOTSUPP;
}
if (fsp->flow_type & FLOW_EXT) { /* Allow only 802.1Q and no etype defined, as * later it's modified to 0x8100
*/ if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
fsp->h_ext.vlan_etype != 0) return -EOPNOTSUPP; if (fsp->m_ext.vlan_tci == htons(0xFFFF))
new_mask |= I40E_VLAN_SRC_MASK; else
new_mask &= ~I40E_VLAN_SRC_MASK;
}
/* If we have a flexible filter, try to add this offset to the correct * flexible filter PIT list. Once finished, we can update the mask. * If the src_offset changed, we will get a new mask value which will * trigger an input set change.
*/ if (userdef->flex_filter) { struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
/* Flexible offset must be even, since the flexible payload * must be aligned on 2-byte boundary.
*/ if (userdef->flex_offset & 0x1) {
dev_warn(&pf->pdev->dev, "Flexible data offset must be 2-byte aligned\n"); return -EINVAL;
}
src_offset = userdef->flex_offset >> 1;
/* FLX_PIT source offset value is only so large */ if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
dev_warn(&pf->pdev->dev, "Flexible data must reside within first 64 bytes of the packet payload\n"); return -EINVAL;
}
/* See if this offset has already been programmed. If we get * an ERR_PTR, then the filter is not safe to add. Otherwise, * if we get a NULL pointer, this means we will need to add * the offset.
*/
flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
src_offset); if (IS_ERR(flex_pit)) return PTR_ERR(flex_pit);
/* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown) * packet types, and thus we need to program both L3 and L4 * flexible values. These must have identical flexible index, * as otherwise we can't correctly program the input set. So * we'll find both an L3 and L4 index and make sure they are * the same.
*/ if (flex_l3) {
l3_flex_pit =
i40e_find_flex_offset(&pf->l3_flex_pit_list,
src_offset); if (IS_ERR(l3_flex_pit)) return PTR_ERR(l3_flex_pit);
if (flex_pit) { /* If we already had a matching L4 entry, we * need to make sure that the L3 entry we * obtained uses the same index.
*/ if (l3_flex_pit) { if (l3_flex_pit->pit_index !=
flex_pit->pit_index) { return -EINVAL;
}
} else {
new_flex_offset = true;
}
} else {
flex_pit = l3_flex_pit;
}
}
/* If we didn't find an existing flex offset, we need to * program a new one. However, we don't immediately program it * here because we will wait to program until after we check * that it is safe to change the input set.
*/ if (!flex_pit) {
new_flex_offset = true;
pit_index = i40e_unused_pit_index(pf);
} else {
pit_index = flex_pit->pit_index;
}
/* Update the mask with the new offset */
new_mask |= i40e_pit_index_to_mask(pit_index);
}
/* If the mask and flexible filter offsets for this filter match the * currently programmed values we don't need any input set change, so * this filter is safe to install.
*/ if (new_mask == current_mask && !new_flex_offset) return 0;
netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
i40e_flow_str(fsp));
i40e_print_input_set(vsi, current_mask, new_mask); if (new_flex_offset) {
netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
pit_index, src_offset);
}
/* Hardware input sets are global across multiple ports, so even the * main port cannot change them when in MFP mode as this would impact * any filters on the other ports.
*/ if (test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n"); return -EOPNOTSUPP;
}
/* This filter requires us to update the input set. However, hardware * only supports one input set per flow type, and does not support * separate masks for each filter. This means that we can only support * a single mask for all filters of a specific type. * * If we have preexisting filters, they obviously depend on the * current programmed input set. Display a diagnostic message in this * case explaining why the filter could not be accepted.
*/ if (*fdir_filter_count) {
netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
i40e_flow_str(fsp),
*fdir_filter_count); return -EOPNOTSUPP;
}
i40e_write_fd_input_set(pf, index, new_mask);
/* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented * frames. If we're programming the input set for IPv4/Other, we also * need to program the IPv4/Fragmented input set. Since we don't have * separate support, we'll always assume and enforce that the two flow * types must have matching input sets.
*/ if (index == LIBIE_FILTER_PCTYPE_NONF_IPV4_OTHER)
i40e_write_fd_input_set(pf, LIBIE_FILTER_PCTYPE_FRAG_IPV4,
new_mask);
/* Add the new offset and update table, if necessary */ if (new_flex_offset) {
err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
pit_index); if (err) return err;
if (flex_l3) {
err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
src_offset,
pit_index); if (err) return err;
}
i40e_reprogram_flex_pit(pf);
}
return 0;
}
/** * i40e_match_fdir_filter - Return true of two filters match * @a: pointer to filter struct * @b: pointer to filter struct * * Returns true if the two filters match exactly the same criteria. I.e. they * match the same flow type and have the same parameters. We don't need to * check any input-set since all filters of the same flow type must use the * same input set.
**/ staticbool i40e_match_fdir_filter(struct i40e_fdir_filter *a, struct i40e_fdir_filter *b)
{ /* The filters do not much if any of these criteria differ. */ if (a->dst_ip != b->dst_ip ||
a->src_ip != b->src_ip ||
a->dst_port != b->dst_port ||
a->src_port != b->src_port ||
a->flow_type != b->flow_type ||
a->ipl4_proto != b->ipl4_proto ||
a->vlan_tag != b->vlan_tag ||
a->vlan_etype != b->vlan_etype) returnfalse;
returntrue;
}
/** * i40e_disallow_matching_filters - Check that new filters differ * @vsi: pointer to the targeted VSI * @input: new filter to check * * Due to hardware limitations, it is not possible for two filters that match * similar criteria to be programmed at the same time. This is true for a few * reasons: * * (a) all filters matching a particular flow type must use the same input * set, that is they must match the same criteria. * (b) different flow types will never match the same packet, as the flow type * is decided by hardware before checking which rules apply. * (c) hardware has no way to distinguish which order filters apply in. * * Due to this, we can't really support using the location data to order * filters in the hardware parsing. It is technically possible for the user to * request two filters matching the same criteria but which select different * queues. In this case, rather than keep both filters in the list, we reject * the 2nd filter when the user requests adding it. * * This avoids needing to track location for programming the filter to * hardware, and ensures that we avoid some strange scenarios involving * deleting filters which match the same criteria.
**/ staticint i40e_disallow_matching_filters(struct i40e_vsi *vsi, struct i40e_fdir_filter *input)
{ struct i40e_pf *pf = vsi->back; struct i40e_fdir_filter *rule; struct hlist_node *node2;
/* Loop through every filter, and check that it doesn't match */
hlist_for_each_entry_safe(rule, node2,
&pf->fdir_filter_list, fdir_node) { /* Don't check the filters match if they share the same fd_id, * since the new filter is actually just updating the target * of the old filter.
*/ if (rule->fd_id == input->fd_id) continue;
/* If any filters match, then print a warning message to the * kernel message buffer and bail out.
*/ if (i40e_match_fdir_filter(rule, input)) {
dev_warn(&pf->pdev->dev, "Existing user defined filter %d already matches this flow.\n",
rule->fd_id); return -EINVAL;
}
}
return 0;
}
/** * i40e_add_fdir_ethtool - Add/Remove Flow Director filters * @vsi: pointer to the targeted VSI * @cmd: command to get or set RX flow classification rules * * Add Flow Director filters for a specific flow spec based on their * protocol. Returns 0 if the filters were successfully added.
**/ staticint i40e_add_fdir_ethtool(struct i40e_vsi *vsi, struct ethtool_rxnfc *cmd)
{ struct i40e_rx_flow_userdef userdef; struct ethtool_rx_flow_spec *fsp; struct i40e_fdir_filter *input;
u16 dest_vsi = 0, q_index = 0; struct i40e_pf *pf; int ret = -EINVAL;
u8 dest_ctl;
if (!vsi) return -EINVAL;
pf = vsi->back;
if (!test_bit(I40E_FLAG_FD_SB_ENA, pf->flags)) return -EOPNOTSUPP;
if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state)) return -ENOSPC;
if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) return -EBUSY;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) return -EBUSY;
fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
/* Parse the user-defined field */ if (i40e_parse_rx_flow_user_data(fsp, &userdef)) return -EINVAL;
/* Extended MAC field is not supported */ if (fsp->flow_type & FLOW_MAC_EXT) return -EINVAL;
ret = i40e_check_fdir_input_set(vsi, fsp, &userdef); if (ret) return ret;
if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
pf->hw.func_caps.fd_filters_guaranteed)) { return -EINVAL;
}
/* ring_cookie is either the drop index, or is a mask of the queue * index and VF id we wish to target.
*/ if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
} else {
u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
if (!vf) { if (ring >= vsi->num_queue_pairs) return -EINVAL;
dest_vsi = vsi->id;
} else { /* VFs are zero-indexed, so we subtract one here */
vf--;
input->vlan_etype = fsp->h_ext.vlan_etype; if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
input->vlan_etype = cpu_to_be16(ETH_P_8021Q); if (fsp->m_ext.vlan_tci && input->vlan_etype)
input->vlan_tag = fsp->h_ext.vlan_tci; if (input->flow_type == IPV6_USER_FLOW ||
input->flow_type == UDP_V6_FLOW ||
input->flow_type == TCP_V6_FLOW ||
input->flow_type == SCTP_V6_FLOW) { /* Reverse the src and dest notion, since the HW expects them * to be from Tx perspective where as the input from user is * from Rx filter view.
*/
input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src, sizeof(__be32) * 4);
memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst, sizeof(__be32) * 4);
} else { /* Reverse the src and dest notion, since the HW expects them * to be from Tx perspective where as the input from user is * from Rx filter view.
*/
input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
}
/* Avoid programming two filters with identical match criteria. */
ret = i40e_disallow_matching_filters(vsi, input); if (ret) goto free_filter_memory;
/* Add the input filter to the fdir_input_list, possibly replacing * a previous filter. Do not free the input structure after adding it * to the list as this would cause a use-after-free bug.
*/
i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
ret = i40e_add_del_fdir(vsi, input, true); if (ret) goto remove_sw_rule; return 0;
/** * i40e_set_rxnfc - command to set RX flow classification rules * @netdev: network interface device structure * @cmd: ethtool rxnfc command * * Returns Success if the command is supported.
**/ staticint i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; int ret = -EOPNOTSUPP;
switch (cmd->cmd) { case ETHTOOL_SRXCLSRLINS:
ret = i40e_add_fdir_ethtool(vsi, cmd); break; case ETHTOOL_SRXCLSRLDEL:
ret = i40e_del_fdir_entry(vsi, cmd); break; default: break;
}
return ret;
}
/** * i40e_max_channels - get Max number of combined channels supported * @vsi: vsi pointer
**/ staticunsignedint i40e_max_channels(struct i40e_vsi *vsi)
{ /* TODO: This code assumes DCB and FD is disabled for now. */ return vsi->alloc_queue_pairs;
}
/** * i40e_get_channels - Get the current channels enabled and max supported etc. * @dev: network interface device structure * @ch: ethtool channels structure * * We don't support separate tx and rx queues as channels. The other count * represents how many queues are being used for control. max_combined counts * how many queue pairs we can support. They may not be mapped 1 to 1 with * q_vectors since we support a lot more queue pairs than q_vectors.
**/ staticvoid i40e_get_channels(struct net_device *dev, struct ethtool_channels *ch)
{ struct i40e_netdev_priv *np = netdev_priv(dev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back;
/* report maximum channels */
ch->max_combined = i40e_max_channels(vsi);
/* report info for other vector */
ch->other_count = test_bit(I40E_FLAG_FD_SB_ENA, pf->flags) ? 1 : 0;
ch->max_other = ch->other_count;
/* Note: This code assumes DCB is disabled for now. */
ch->combined_count = vsi->num_queue_pairs;
}
/** * i40e_set_channels - Set the new channels count. * @dev: network interface device structure * @ch: ethtool channels structure * * The new channels count may not be the same as requested by the user * since it gets rounded down to a power of 2 value.
**/ staticint i40e_set_channels(struct net_device *dev, struct ethtool_channels *ch)
{ const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; struct i40e_netdev_priv *np = netdev_priv(dev); unsignedint count = ch->combined_count; struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; struct i40e_fdir_filter *rule; struct hlist_node *node2; int new_count; int err = 0;
/* We do not support setting channels for any other VSI at present */ if (vsi->type != I40E_VSI_MAIN) return -EINVAL;
/* We do not support setting channels via ethtool when TCs are * configured through mqprio
*/ if (i40e_is_tc_mqprio_enabled(pf)) return -EINVAL;
/* verify they are not requesting separate vectors */ if (!count || ch->rx_count || ch->tx_count) return -EINVAL;
/* verify other_count has not changed */ if (ch->other_count != (test_bit(I40E_FLAG_FD_SB_ENA, pf->flags) ? 1 : 0)) return -EINVAL;
/* verify the number of channels does not exceed hardware limits */ if (count > i40e_max_channels(vsi)) return -EINVAL;
/* verify that the number of channels does not invalidate any current * flow director rules
*/
hlist_for_each_entry_safe(rule, node2,
&pf->fdir_filter_list, fdir_node) { if (rule->dest_ctl != drop && count <= rule->q_index) {
dev_warn(&pf->pdev->dev, "Existing user defined filter %d assigns flow to queue %d\n",
rule->fd_id, rule->q_index);
err = -EINVAL;
}
}
if (err) {
dev_err(&pf->pdev->dev, "Existing filter rules must be deleted to reduce combined channel count to %d\n",
count); return err;
}
/* update feature limits from largest to smallest supported values */ /* TODO: Flow director limit, DCB etc */
/* use rss_reconfig to rebuild with new queue count and update traffic * class queue mapping
*/
new_count = i40e_reconfig_rss_queues(pf, count); if (new_count > 0) return 0; else return -EINVAL;
}
/** * i40e_get_rxfh - get the rx flow hash indirection table * @netdev: network interface device structure * @rxfh: pointer to param struct (indir, key, hfunc) * * Reads the indirection table directly from the hardware. Returns 0 on * success.
**/ staticint i40e_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi;
u8 *lut, *seed = NULL; int ret;
u16 i;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (!rxfh->indir) return 0;
seed = rxfh->key;
lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); if (!lut) return -ENOMEM;
ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE); if (ret) goto out; for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
rxfh->indir[i] = (u32)(lut[i]);
out:
kfree(lut);
return ret;
}
/** * i40e_set_rxfh - set the rx flow hash indirection table * @netdev: network interface device structure * @rxfh: pointer to param struct (indir, key, hfunc) * @extack: extended ACK from the Netlink message * * Returns -EINVAL if the table specifies an invalid queue id, otherwise * returns 0 after programming the table.
**/ staticint i40e_set_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh, struct netlink_ext_ack *extack)
{ struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back;
u8 *seed = NULL;
u16 i;
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP) return -EOPNOTSUPP;
if (rxfh->key) { if (!vsi->rss_hkey_user) {
vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
GFP_KERNEL); if (!vsi->rss_hkey_user) return -ENOMEM;
}
memcpy(vsi->rss_hkey_user, rxfh->key, I40E_HKEY_ARRAY_SIZE);
seed = vsi->rss_hkey_user;
} if (!vsi->rss_lut_user) {
vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); if (!vsi->rss_lut_user) return -ENOMEM;
}
/* Each 32 bits pointed by 'indir' is stored with a lut entry */ if (rxfh->indir) for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
vsi->rss_lut_user[i] = (u8)(rxfh->indir[i]); else
i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
vsi->rss_size);
/** * i40e_get_priv_flags - report device private flags * @dev: network interface device structure * * The get string set count and the string set should be matched for each * flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags * array. * * Returns a u32 bitmap of flags.
**/ static u32 i40e_get_priv_flags(struct net_device *dev)
{ struct i40e_netdev_priv *np = netdev_priv(dev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back;
u32 i, j, ret_flags = 0;
for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { conststruct i40e_priv_flags *priv_flag;
priv_flag = &i40e_gstrings_priv_flags[i];
if (test_bit(priv_flag->bitno, pf->flags))
ret_flags |= BIT(i);
}
/* If this is a read-only flag, it can't be changed */ if (priv_flag->read_only &&
test_bit(priv_flag->bitno, orig_flags) != new_val) return -EOPNOTSUPP;
if (new_val)
set_bit(priv_flag->bitno, new_flags); else
clear_bit(priv_flag->bitno, new_flags);
}
/* If this is a read-only flag, it can't be changed */ if (priv_flag->read_only &&
test_bit(priv_flag->bitno, orig_flags) != new_val) return -EOPNOTSUPP;
if (new_val)
set_bit(priv_flag->bitno, new_flags); else
clear_bit(priv_flag->bitno, new_flags);
}
/* Before we finalize any flag changes, we need to perform some * checks to ensure that the changes are supported and safe.
*/
/* ATR eviction is not supported on all devices */ if (test_bit(I40E_FLAG_HW_ATR_EVICT_ENA, new_flags) &&
!test_bit(I40E_HW_CAP_ATR_EVICT, pf->hw.caps)) return -EOPNOTSUPP;
/* If the driver detected FW LLDP was disabled on init, this flag could * be set, however we do not support _changing_ the flag: * - on XL710 if NPAR is enabled or FW API version < 1.7 * - on X722 with FW API version < 1.6 * There are situations where older FW versions/NPAR enabled PFs could * disable LLDP, however we _must_ not allow the user to enable/disable * LLDP with this flag on unsupported FW versions.
*/ if (test_bit(I40E_FLAG_FW_LLDP_DIS, changed_flags) &&
!test_bit(I40E_HW_CAP_FW_LLDP_STOPPABLE, pf->hw.caps)) {
dev_warn(&pf->pdev->dev, "Device does not support changing FW LLDP\n"); return -EOPNOTSUPP;
}
if (test_bit(I40E_FLAG_RS_FEC, changed_flags) &&
pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
pf->hw.device_id != I40E_DEV_ID_25G_B) {
dev_warn(&pf->pdev->dev, "Device does not support changing FEC configuration\n"); return -EOPNOTSUPP;
}
if (test_bit(I40E_FLAG_BASE_R_FEC, changed_flags) &&
pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
pf->hw.device_id != I40E_DEV_ID_25G_B &&
pf->hw.device_id != I40E_DEV_ID_KX_X722) {
dev_warn(&pf->pdev->dev, "Device does not support changing FEC configuration\n"); return -EOPNOTSUPP;
}
/* Process any additional changes needed as a result of flag changes. * The changed_flags value reflects the list of bits that were * changed in the code above.
*/
/* Flush current ATR settings if ATR was disabled */ if (test_bit(I40E_FLAG_FD_ATR_ENA, changed_flags) &&
!test_bit(I40E_FLAG_FD_ATR_ENA, new_flags)) {
set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
}
if (test_bit(I40E_FLAG_TRUE_PROMISC_ENA, changed_flags)) {
u16 sw_flags = 0, valid_flags = 0; int ret;
if (!test_bit(I40E_FLAG_TRUE_PROMISC_ENA, new_flags))
sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
0, NULL); if (ret && pf->hw.aq.asq_last_status != LIBIE_AQ_RC_ESRCH) {
dev_info(&pf->pdev->dev, "couldn't set switch config bits, err %pe aq_err %s\n",
ERR_PTR(ret),
libie_aq_str(pf->hw.aq.asq_last_status)); /* not a fatal problem, just keep going */
}
}
if (test_bit(I40E_FLAG_LINK_DOWN_ON_CLOSE_ENA, changed_flags) &&
test_bit(I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENA, orig_flags)) {
dev_err(&pf->pdev->dev, "Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n"); return -EOPNOTSUPP;
}
if (test_bit(I40E_FLAG_VF_VLAN_PRUNING_ENA, changed_flags) &&
pf->num_alloc_vfs) {
dev_warn(&pf->pdev->dev, "Changing vf-vlan-pruning flag while VF(s) are active is not supported\n"); return -EOPNOTSUPP;
}
if (test_bit(I40E_FLAG_LEGACY_RX_ENA, changed_flags) &&
I40E_2K_TOO_SMALL_WITH_PADDING) {
dev_warn(&pf->pdev->dev, "2k Rx buffer is too small to fit standard MTU and skb_shared_info\n"); return -EOPNOTSUPP;
}
if (test_bit(I40E_FLAG_LINK_DOWN_ON_CLOSE_ENA, changed_flags) &&
test_bit(I40E_FLAG_LINK_DOWN_ON_CLOSE_ENA, new_flags) &&
test_bit(I40E_FLAG_MFP_ENA, new_flags))
dev_warn(&pf->pdev->dev, "Turning on link-down-on-close flag may affect other partitions\n");
if (test_bit(I40E_FLAG_FW_LLDP_DIS, changed_flags)) { if (test_bit(I40E_FLAG_FW_LLDP_DIS, new_flags)) { #ifdef CONFIG_I40E_DCB
i40e_dcb_sw_default_config(pf); #endif/* CONFIG_I40E_DCB */
i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
} else {
status = i40e_aq_start_lldp(&pf->hw, false, NULL); if (status) {
adq_err = pf->hw.aq.asq_last_status; switch (adq_err) { case LIBIE_AQ_RC_EEXIST:
dev_warn(&pf->pdev->dev, "FW LLDP agent is already running\n");
reset_needed = 0; break; case LIBIE_AQ_RC_EPERM:
dev_warn(&pf->pdev->dev, "Device configuration forbids SW from starting the LLDP agent.\n"); return -EINVAL; case LIBIE_AQ_RC_EAGAIN:
dev_warn(&pf->pdev->dev, "Stop FW LLDP agent command is still being processed, please try again in a second.\n"); return -EBUSY; default:
dev_warn(&pf->pdev->dev, "Starting FW LLDP agent failed: error: %pe, %s\n",
ERR_PTR(status),
libie_aq_str(adq_err)); return -EINVAL;
}
}
}
}
/* Now that we've checked to ensure that the new flags are valid, load * them into place. Since we only modify flags either (a) during * initialization or (b) while holding the RTNL lock, we don't need * anything fancy here.
*/
bitmap_copy(pf->flags, new_flags, I40E_PF_FLAGS_NBITS);
/* Issue reset to cause things to take effect, as additional bits * are added we will need to create a mask of bits requiring reset
*/ if (reset_needed)
i40e_do_reset(pf, reset_needed, true);
if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
is_sfp = true;
for (i = 0; i < ee->len; i++) {
u32 offset = i + ee->offset;
u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
/* Check if we need to access the other memory page */ if (is_sfp) { if (offset >= ETH_MODULE_SFF_8079_LEN) {
offset -= ETH_MODULE_SFF_8079_LEN;
addr = I40E_I2C_EEPROM_DEV_ADDR2;
}
} else { while (offset >= ETH_MODULE_SFF_8436_LEN) { /* Compute memory page number and offset. */
offset -= ETH_MODULE_SFF_8436_LEN / 2;
addr++;
}
}
status = i40e_aq_get_phy_register(hw,
I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
addr, true, offset, &value, NULL); if (status) return -EIO;
data[i] = value;
} return 0;
}
for (i = 0; i < ARRAY_SIZE(param); i++) { if (param[i].value) {
netdev_info(netdev, "EEE setting %s not supported\n",
param[i].name); return -EOPNOTSUPP;
}
}
/* Deny parameters we don't support */ if (i40e_is_eee_param_supported(netdev, edata)) return -EOPNOTSUPP;
/* Get initial PHY capabilities */
status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
NULL); if (status) return -EAGAIN;
/* Check whether NIC configuration is compatible with Energy Efficient * Ethernet (EEE) mode.
*/ if (abilities.eee_capability == 0) return -EOPNOTSUPP;
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