diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/ef10.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index 6dd0a79226c2..a3c00ffae8a0 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -101,6 +101,7 @@ struct efx_ef10_filter_table { bool mc_promisc; /* Whether in multicast promiscuous mode when last changed */ bool mc_promisc_last; + bool vlan_filter; struct list_head vlan_list; }; @@ -323,6 +324,11 @@ static int efx_ef10_add_vlan(struct efx_nic *efx, u16 vid) vlan = efx_ef10_find_vlan(efx, vid); if (vlan) { + /* We add VID 0 on init. 8021q adds it on module init + * for all interfaces with VLAN filtring feature. + */ + if (vid == 0) + goto done_unlock; netif_warn(efx, drv, efx->net_dev, "VLAN %u already added\n", vid); rc = -EALREADY; @@ -348,6 +354,7 @@ static int efx_ef10_add_vlan(struct efx_nic *efx, u16 vid) goto fail_filter_add_vlan; } +done_unlock: mutex_unlock(&nic_data->vlan_lock); return 0; @@ -377,6 +384,35 @@ static void efx_ef10_del_vlan_internal(struct efx_nic *efx, kfree(vlan); } +static int efx_ef10_del_vlan(struct efx_nic *efx, u16 vid) +{ + struct efx_ef10_nic_data *nic_data = efx->nic_data; + struct efx_ef10_vlan *vlan; + int rc = 0; + + /* 8021q removes VID 0 on module unload for all interfaces + * with VLAN filtering feature. We need to keep it to receive + * untagged traffic. + */ + if (vid == 0) + return 0; + + mutex_lock(&nic_data->vlan_lock); + + vlan = efx_ef10_find_vlan(efx, vid); + if (!vlan) { + netif_err(efx, drv, efx->net_dev, + "VLAN %u to be deleted not found\n", vid); + rc = -ENOENT; + } else { + efx_ef10_del_vlan_internal(efx, vlan); + } + + mutex_unlock(&nic_data->vlan_lock); + + return rc; +} + static void efx_ef10_cleanup_vlans(struct efx_nic *efx) { struct efx_ef10_nic_data *nic_data = efx->nic_data; @@ -542,8 +578,18 @@ static int efx_ef10_probe(struct efx_nic *efx) if (rc) goto fail_add_vid_unspec; + /* If VLAN filtering is enabled, we need VID 0 to get untagged + * traffic. It is added automatically if 8021q module is loaded, + * but we can't rely on it since module may be not loaded. + */ + rc = efx_ef10_add_vlan(efx, 0); + if (rc) + goto fail_add_vid_0; + return 0; +fail_add_vid_0: + efx_ef10_cleanup_vlans(efx); fail_add_vid_unspec: mutex_destroy(&nic_data->vlan_lock); efx_ptp_remove(efx); @@ -3928,6 +3974,8 @@ static int efx_ef10_filter_table_probe(struct efx_nic *efx) } table->mc_promisc_last = false; + table->vlan_filter = + !!(efx->net_dev->features & NETIF_F_HW_VLAN_CTAG_FILTER); INIT_LIST_HEAD(&table->vlan_list); efx->filter_state = table; @@ -4400,6 +4448,12 @@ static void efx_ef10_filter_vlan_sync_rx_mode(struct efx_nic *efx, struct efx_ef10_filter_table *table = efx->filter_state; struct efx_ef10_nic_data *nic_data = efx->nic_data; + /* Do not install unspecified VID if VLAN filtering is enabled. + * Do not install all specified VIDs if VLAN filtering is disabled. + */ + if ((vlan->vid == EFX_FILTER_VID_UNSPEC) == table->vlan_filter) + return; + /* Insert/renew unicast filters */ if (table->uc_promisc) { efx_ef10_filter_insert_def(efx, vlan, false, false); @@ -4463,6 +4517,7 @@ static void efx_ef10_filter_sync_rx_mode(struct efx_nic *efx) struct efx_ef10_filter_table *table = efx->filter_state; struct net_device *net_dev = efx->net_dev; struct efx_ef10_filter_vlan *vlan; + bool vlan_filter; if (!efx_dev_registered(efx)) return; @@ -4480,6 +4535,16 @@ static void efx_ef10_filter_sync_rx_mode(struct efx_nic *efx) efx_ef10_filter_mc_addr_list(efx); netif_addr_unlock_bh(net_dev); + /* If VLAN filtering changes, all old filters are finally removed. + * Do it in advance to avoid conflicts for unicast untagged and + * VLAN 0 tagged filters. + */ + vlan_filter = !!(net_dev->features & NETIF_F_HW_VLAN_CTAG_FILTER); + if (table->vlan_filter != vlan_filter) { + table->vlan_filter = vlan_filter; + efx_ef10_filter_remove_old(efx); + } + list_for_each_entry(vlan, &table->vlan_list, list) efx_ef10_filter_vlan_sync_rx_mode(efx, vlan); @@ -5014,8 +5079,25 @@ static int efx_ef10_ptp_set_ts_config(struct efx_nic *efx, } } +static int efx_ef10_vlan_rx_add_vid(struct efx_nic *efx, __be16 proto, u16 vid) +{ + if (proto != htons(ETH_P_8021Q)) + return -EINVAL; + + return efx_ef10_add_vlan(efx, vid); +} + +static int efx_ef10_vlan_rx_kill_vid(struct efx_nic *efx, __be16 proto, u16 vid) +{ + if (proto != htons(ETH_P_8021Q)) + return -EINVAL; + + return efx_ef10_del_vlan(efx, vid); +} + #define EF10_OFFLOAD_FEATURES \ (NETIF_F_IP_CSUM | \ + NETIF_F_HW_VLAN_CTAG_FILTER | \ NETIF_F_IPV6_CSUM | \ NETIF_F_RXHASH | \ NETIF_F_NTUPLE) @@ -5097,6 +5179,8 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = { #endif .ptp_write_host_time = efx_ef10_ptp_write_host_time_vf, .ptp_set_ts_config = efx_ef10_ptp_set_ts_config_vf, + .vlan_rx_add_vid = efx_ef10_vlan_rx_add_vid, + .vlan_rx_kill_vid = efx_ef10_vlan_rx_kill_vid, #ifdef CONFIG_SFC_SRIOV .vswitching_probe = efx_ef10_vswitching_probe_vf, .vswitching_restore = efx_ef10_vswitching_restore_vf, @@ -5207,6 +5291,8 @@ const struct efx_nic_type efx_hunt_a0_nic_type = { .ptp_write_host_time = efx_ef10_ptp_write_host_time, .ptp_set_ts_sync_events = efx_ef10_ptp_set_ts_sync_events, .ptp_set_ts_config = efx_ef10_ptp_set_ts_config, + .vlan_rx_add_vid = efx_ef10_vlan_rx_add_vid, + .vlan_rx_kill_vid = efx_ef10_vlan_rx_kill_vid, #ifdef CONFIG_SFC_SRIOV .sriov_configure = efx_ef10_sriov_configure, .sriov_init = efx_ef10_sriov_init, |