diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c')
-rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c index 972b202b9884..81840b625c68 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c @@ -52,6 +52,29 @@ struct otx2_tc_flow { bool is_act_police; }; +int otx2_tc_alloc_ent_bitmap(struct otx2_nic *nic) +{ + struct otx2_tc_info *tc = &nic->tc_info; + + if (!nic->flow_cfg->max_flows || is_otx2_vf(nic->pcifunc)) + return 0; + + /* Max flows changed, free the existing bitmap */ + kfree(tc->tc_entries_bitmap); + + tc->tc_entries_bitmap = + kcalloc(BITS_TO_LONGS(nic->flow_cfg->max_flows), + sizeof(long), GFP_KERNEL); + if (!tc->tc_entries_bitmap) { + netdev_err(nic->netdev, + "Unable to alloc TC flow entries bitmap\n"); + return -ENOMEM; + } + + return 0; +} +EXPORT_SYMBOL(otx2_tc_alloc_ent_bitmap); + static void otx2_get_egress_burst_cfg(u32 burst, u32 *burst_exp, u32 *burst_mantissa) { @@ -596,6 +619,7 @@ static int otx2_del_mcam_flow_entry(struct otx2_nic *nic, u16 entry) static int otx2_tc_del_flow(struct otx2_nic *nic, struct flow_cls_offload *tc_flow_cmd) { + struct otx2_flow_config *flow_cfg = nic->flow_cfg; struct otx2_tc_info *tc_info = &nic->tc_info; struct otx2_tc_flow *flow_node; int err; @@ -638,7 +662,7 @@ static int otx2_tc_del_flow(struct otx2_nic *nic, kfree_rcu(flow_node, rcu); clear_bit(flow_node->bitpos, tc_info->tc_entries_bitmap); - tc_info->num_entries--; + flow_cfg->nr_flows--; return 0; } @@ -647,6 +671,7 @@ static int otx2_tc_add_flow(struct otx2_nic *nic, struct flow_cls_offload *tc_flow_cmd) { struct netlink_ext_ack *extack = tc_flow_cmd->common.extack; + struct otx2_flow_config *flow_cfg = nic->flow_cfg; struct otx2_tc_info *tc_info = &nic->tc_info; struct otx2_tc_flow *new_node, *old_node; struct npc_install_flow_req *req, dummy; @@ -655,9 +680,9 @@ static int otx2_tc_add_flow(struct otx2_nic *nic, if (!(nic->flags & OTX2_FLAG_TC_FLOWER_SUPPORT)) return -ENOMEM; - if (bitmap_full(tc_info->tc_entries_bitmap, nic->flow_cfg->tc_max_flows)) { + if (bitmap_full(tc_info->tc_entries_bitmap, flow_cfg->max_flows)) { NL_SET_ERR_MSG_MOD(extack, - "Not enough MCAM space to add the flow"); + "Free MCAM entry not available to add the flow"); return -ENOMEM; } @@ -695,10 +720,9 @@ static int otx2_tc_add_flow(struct otx2_nic *nic, memcpy(req, &dummy, sizeof(struct npc_install_flow_req)); new_node->bitpos = find_first_zero_bit(tc_info->tc_entries_bitmap, - nic->flow_cfg->tc_max_flows); + flow_cfg->max_flows); req->channel = nic->hw.rx_chan_base; - req->entry = nic->flow_cfg->flow_ent[nic->flow_cfg->tc_flower_offset + - nic->flow_cfg->tc_max_flows - new_node->bitpos]; + req->entry = flow_cfg->flow_ent[flow_cfg->max_flows - new_node->bitpos - 1]; req->intf = NIX_INTF_RX; req->set_cntr = 1; new_node->entry = req->entry; @@ -723,7 +747,7 @@ static int otx2_tc_add_flow(struct otx2_nic *nic, } set_bit(new_node->bitpos, tc_info->tc_entries_bitmap); - tc_info->num_entries++; + flow_cfg->nr_flows++; return 0; @@ -1008,10 +1032,21 @@ static const struct rhashtable_params tc_flow_ht_params = { int otx2_init_tc(struct otx2_nic *nic) { struct otx2_tc_info *tc = &nic->tc_info; + int err; /* Exclude receive queue 0 being used for police action */ set_bit(0, &nic->rq_bmap); + if (!nic->flow_cfg) { + netdev_err(nic->netdev, + "Can't init TC, nic->flow_cfg is not setup\n"); + return -EINVAL; + } + + err = otx2_tc_alloc_ent_bitmap(nic); + if (err) + return err; + tc->flow_ht_params = tc_flow_ht_params; return rhashtable_init(&tc->flow_table, &tc->flow_ht_params); } @@ -1020,5 +1055,6 @@ void otx2_shutdown_tc(struct otx2_nic *nic) { struct otx2_tc_info *tc = &nic->tc_info; + kfree(tc->tc_entries_bitmap); rhashtable_destroy(&tc->flow_table); } |