diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_lag.c')
-rw-r--r-- | drivers/net/ethernet/intel/ice/ice_lag.c | 131 |
1 files changed, 76 insertions, 55 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c index cd065ec48c87..2a25323105e5 100644 --- a/drivers/net/ethernet/intel/ice/ice_lag.c +++ b/drivers/net/ethernet/intel/ice/ice_lag.c @@ -208,8 +208,7 @@ ice_lag_cfg_fltr(struct ice_lag *lag, u32 act, u16 recipe_id, u16 *rule_idx, eth_hdr = s_rule->hdr_data; ice_fill_eth_hdr(eth_hdr); - act |= (vsi_num << ICE_SINGLE_ACT_VSI_ID_S) & - ICE_SINGLE_ACT_VSI_ID_M; + act |= FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, vsi_num); s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX); s_rule->recipe_id = cpu_to_le16(recipe_id); @@ -570,6 +569,50 @@ resume_traffic: } /** + * ice_lag_build_netdev_list - populate the lag struct's netdev list + * @lag: local lag struct + * @ndlist: pointer to netdev list to populate + */ +static void ice_lag_build_netdev_list(struct ice_lag *lag, + struct ice_lag_netdev_list *ndlist) +{ + struct ice_lag_netdev_list *nl; + struct net_device *tmp_nd; + + INIT_LIST_HEAD(&ndlist->node); + rcu_read_lock(); + for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) { + nl = kzalloc(sizeof(*nl), GFP_ATOMIC); + if (!nl) + break; + + nl->netdev = tmp_nd; + list_add(&nl->node, &ndlist->node); + } + rcu_read_unlock(); + lag->netdev_head = &ndlist->node; +} + +/** + * ice_lag_destroy_netdev_list - free lag struct's netdev list + * @lag: pointer to local lag struct + * @ndlist: pointer to lag struct netdev list + */ +static void ice_lag_destroy_netdev_list(struct ice_lag *lag, + struct ice_lag_netdev_list *ndlist) +{ + struct ice_lag_netdev_list *entry, *n; + + rcu_read_lock(); + list_for_each_entry_safe(entry, n, &ndlist->node, node) { + list_del(&entry->node); + kfree(entry); + } + rcu_read_unlock(); + lag->netdev_head = NULL; +} + +/** * ice_lag_move_single_vf_nodes - Move Tx scheduling nodes for single VF * @lag: primary interface LAG struct * @oldport: lport of previous interface @@ -597,7 +640,6 @@ ice_lag_move_single_vf_nodes(struct ice_lag *lag, u8 oldport, u8 newport, void ice_lag_move_new_vf_nodes(struct ice_vf *vf) { struct ice_lag_netdev_list ndlist; - struct list_head *tmp, *n; u8 pri_port, act_port; struct ice_lag *lag; struct ice_vsi *vsi; @@ -621,38 +663,15 @@ void ice_lag_move_new_vf_nodes(struct ice_vf *vf) pri_port = pf->hw.port_info->lport; act_port = lag->active_port; - if (lag->upper_netdev) { - struct ice_lag_netdev_list *nl; - struct net_device *tmp_nd; - - INIT_LIST_HEAD(&ndlist.node); - rcu_read_lock(); - for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) { - nl = kzalloc(sizeof(*nl), GFP_ATOMIC); - if (!nl) - break; - - nl->netdev = tmp_nd; - list_add(&nl->node, &ndlist.node); - } - rcu_read_unlock(); - } - - lag->netdev_head = &ndlist.node; + if (lag->upper_netdev) + ice_lag_build_netdev_list(lag, &ndlist); if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG) && lag->bonded && lag->primary && pri_port != act_port && !list_empty(lag->netdev_head)) ice_lag_move_single_vf_nodes(lag, pri_port, act_port, vsi->idx); - list_for_each_safe(tmp, n, &ndlist.node) { - struct ice_lag_netdev_list *entry; - - entry = list_entry(tmp, struct ice_lag_netdev_list, node); - list_del(&entry->node); - kfree(entry); - } - lag->netdev_head = NULL; + ice_lag_destroy_netdev_list(lag, &ndlist); new_vf_unlock: mutex_unlock(&pf->lag_mutex); @@ -679,6 +698,29 @@ static void ice_lag_move_vf_nodes(struct ice_lag *lag, u8 oldport, u8 newport) ice_lag_move_single_vf_nodes(lag, oldport, newport, i); } +/** + * ice_lag_move_vf_nodes_cfg - move vf nodes outside LAG netdev event context + * @lag: local lag struct + * @src_prt: lport value for source port + * @dst_prt: lport value for destination port + * + * This function is used to move nodes during an out-of-netdev-event situation, + * primarily when the driver needs to reconfigure or recreate resources. + * + * Must be called while holding the lag_mutex to avoid lag events from + * processing while out-of-sync moves are happening. Also, paired moves, + * such as used in a reset flow, should both be called under the same mutex + * lock to avoid changes between start of reset and end of reset. + */ +void ice_lag_move_vf_nodes_cfg(struct ice_lag *lag, u8 src_prt, u8 dst_prt) +{ + struct ice_lag_netdev_list ndlist; + + ice_lag_build_netdev_list(lag, &ndlist); + ice_lag_move_vf_nodes(lag, src_prt, dst_prt); + ice_lag_destroy_netdev_list(lag, &ndlist); +} + #define ICE_LAG_SRIOV_CP_RECIPE 10 #define ICE_LAG_SRIOV_TRAIN_PKT_LEN 16 @@ -711,9 +753,7 @@ ice_lag_cfg_cp_fltr(struct ice_lag *lag, bool add) s_rule->act = cpu_to_le32(ICE_FWD_TO_VSI | ICE_SINGLE_ACT_LAN_ENABLE | ICE_SINGLE_ACT_VALID_BIT | - ((vsi->vsi_num << - ICE_SINGLE_ACT_VSI_ID_S) & - ICE_SINGLE_ACT_VSI_ID_M)); + FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, vsi->vsi_num)); s_rule->hdr_len = cpu_to_le16(ICE_LAG_SRIOV_TRAIN_PKT_LEN); memcpy(s_rule->hdr_data, lacp_train_pkt, LACP_TRAIN_PKT_LEN); opc = ice_aqc_opc_add_sw_rules; @@ -1938,6 +1978,8 @@ int ice_init_lag(struct ice_pf *pf) int n, err; ice_lag_init_feature_support_flag(pf); + if (!ice_is_feature_supported(pf, ICE_F_SRIOV_LAG)) + return 0; pf->lag = kzalloc(sizeof(*lag), GFP_KERNEL); if (!pf->lag) @@ -2051,7 +2093,6 @@ void ice_lag_rebuild(struct ice_pf *pf) { struct ice_lag_netdev_list ndlist; struct ice_lag *lag, *prim_lag; - struct list_head *tmp, *n; u8 act_port, loc_port; if (!pf->lag || !pf->lag->bonded) @@ -2063,21 +2104,7 @@ void ice_lag_rebuild(struct ice_pf *pf) if (lag->primary) { prim_lag = lag; } else { - struct ice_lag_netdev_list *nl; - struct net_device *tmp_nd; - - INIT_LIST_HEAD(&ndlist.node); - rcu_read_lock(); - for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) { - nl = kzalloc(sizeof(*nl), GFP_ATOMIC); - if (!nl) - break; - - nl->netdev = tmp_nd; - list_add(&nl->node, &ndlist.node); - } - rcu_read_unlock(); - lag->netdev_head = &ndlist.node; + ice_lag_build_netdev_list(lag, &ndlist); prim_lag = ice_lag_find_primary(lag); } @@ -2107,13 +2134,7 @@ void ice_lag_rebuild(struct ice_pf *pf) ice_clear_rdma_cap(pf); lag_rebuild_out: - list_for_each_safe(tmp, n, &ndlist.node) { - struct ice_lag_netdev_list *entry; - - entry = list_entry(tmp, struct ice_lag_netdev_list, node); - list_del(&entry->node); - kfree(entry); - } + ice_lag_destroy_netdev_list(lag, &ndlist); mutex_unlock(&pf->lag_mutex); } |