Merge branch 'net-mlx5-misc-changes-2025-07-09'

Tariq Toukan says:

====================
net/mlx5: misc changes 2025-07-09

This series contains misc enhancements to the mlx5 driver.
====================

Link: https://patch.msgid.link/1752009387-13300-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

9 files changed, 31 insertions, 39 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 65a73913b9a2..64e69e616b1f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -383,7 +383,6 @@ enum {
 	MLX5E_SQ_STATE_RECOVERING,
 	MLX5E_SQ_STATE_IPSEC,
 	MLX5E_SQ_STATE_DIM,
-	MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE,
 	MLX5E_SQ_STATE_PENDING_XSK_TX,
 	MLX5E_SQ_STATE_PENDING_TLS_RX_RESYNC,
 	MLX5E_NUM_SQ_STATES, /* Must be kept last */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
index 5d0014129a7e..391b4e9c9dc4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
@@ -340,8 +340,6 @@ static int mlx5e_ptp_alloc_txqsq(struct mlx5e_ptp *c, int txq_ix,
 	sq->stats     = &c->priv->ptp_stats.sq[tc];
 	sq->ptpsq     = ptpsq;
 	INIT_WORK(&sq->recover_work, mlx5e_tx_err_cqe_work);
-	if (!MLX5_CAP_ETH(mdev, wqe_vlan_insert))
-		set_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state);
 	sq->stop_room = param->stop_room;
 	sq->ptp_cyc2time = mlx5_sq_ts_translator(mdev);
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
index c3bda4612fa9..bd96988e102c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
@@ -13,7 +13,6 @@ static const char * const sq_sw_state_type_name[] = {
 	[MLX5E_SQ_STATE_RECOVERING] = "recovering",
 	[MLX5E_SQ_STATE_IPSEC] = "ipsec",
 	[MLX5E_SQ_STATE_DIM] = "dim",
-	[MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE] = "vlan_need_l2_inline",
 	[MLX5E_SQ_STATE_PENDING_XSK_TX] = "pending_xsk_tx",
 	[MLX5E_SQ_STATE_PENDING_TLS_RX_RESYNC] = "pending_tls_rx_resync",
 };
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rx_res.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rx_res.c
index e5cce2df3649..a2acbfee2b77 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rx_res.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rx_res.c
@@ -571,8 +571,6 @@ void mlx5e_rx_res_channels_activate(struct mlx5e_rx_res *res, struct mlx5e_chann
 
 	for (ix = 0; ix < nch; ix++)
 		mlx5e_rx_res_channel_activate_direct(res, chs, ix);
-	for (ix = nch; ix < res->max_nch; ix++)
-		mlx5e_rx_res_channel_deactivate_direct(res, ix);
 
 	if (res->features & MLX5E_RX_RES_FEATURE_PTP) {
 		u32 rqn;
@@ -595,7 +593,7 @@ void mlx5e_rx_res_channels_deactivate(struct mlx5e_rx_res *res)
 
 	mlx5e_rx_res_rss_disable(res);
 
-	for (ix = 0; ix < res->max_nch; ix++)
+	for (ix = 0; ix < res->rss_nch; ix++)
 		mlx5e_rx_res_channel_deactivate_direct(res, ix);
 
 	if (res->features & MLX5E_RX_RES_FEATURE_PTP) {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/vlan.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/vlan.c
index a13c5e707b83..9bdb5820c553 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/vlan.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/vlan.c
@@ -94,29 +94,30 @@ mlx5e_tc_act_vlan_add_push_action(struct mlx5e_priv *priv,
 				  struct net_device **out_dev,
 				  struct netlink_ext_ack *extack)
 {
-	struct net_device *vlan_dev = *out_dev;
-	struct flow_action_entry vlan_act = {
-		.id = FLOW_ACTION_VLAN_PUSH,
-		.vlan.vid = vlan_dev_vlan_id(vlan_dev),
-		.vlan.proto = vlan_dev_vlan_proto(vlan_dev),
-		.vlan.prio = 0,
-	};
-	int err;
-
-	err = parse_tc_vlan_action(priv, &vlan_act, attr->esw_attr, &attr->action, extack, NULL);
-	if (err)
-		return err;
-
-	rcu_read_lock();
-	*out_dev = dev_get_by_index_rcu(dev_net(vlan_dev), dev_get_iflink(vlan_dev));
-	rcu_read_unlock();
-	if (!*out_dev)
-		return -ENODEV;
+	do {
+		struct net_device *vlan_dev = *out_dev;
+		struct flow_action_entry vlan_act = {
+			.id = FLOW_ACTION_VLAN_PUSH,
+			.vlan.vid = vlan_dev_vlan_id(vlan_dev),
+			.vlan.proto = vlan_dev_vlan_proto(vlan_dev),
+			.vlan.prio = 0,
+		};
+		int err;
+
+		err = parse_tc_vlan_action(priv, &vlan_act, attr->esw_attr,
+					   &attr->action, extack, NULL);
+		if (err)
+			return err;
 
-	if (is_vlan_dev(*out_dev))
-		err = mlx5e_tc_act_vlan_add_push_action(priv, attr, out_dev, extack);
+		rcu_read_lock();
+		*out_dev = dev_get_by_index_rcu(dev_net(vlan_dev),
+						dev_get_iflink(vlan_dev));
+		rcu_read_unlock();
+		if (!*out_dev)
+			return -ENODEV;
+	} while (is_vlan_dev(*out_dev));
 
-	return err;
+	return 0;
 }
 
 int
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
index 81332cd4a582..870d12364f99 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
@@ -1195,6 +1195,7 @@ mlx5_tc_ct_block_flow_offload_add(struct mlx5_ct_ft *ft,
 	struct flow_action_entry *meta_action;
 	unsigned long cookie = flow->cookie;
 	struct mlx5_ct_entry *entry;
+	bool has_nat;
 	int err;
 
 	meta_action = mlx5_tc_ct_get_ct_metadata_action(flow_rule);
@@ -1236,6 +1237,8 @@ mlx5_tc_ct_block_flow_offload_add(struct mlx5_ct_ft *ft,
 	err = mlx5_tc_ct_rule_to_tuple_nat(&entry->tuple_nat, flow_rule);
 	if (err)
 		goto err_set;
+	has_nat = memcmp(&entry->tuple, &entry->tuple_nat,
+			 sizeof(entry->tuple));
 
 	spin_lock_bh(&ct_priv->ht_lock);
 
@@ -1244,7 +1247,7 @@ mlx5_tc_ct_block_flow_offload_add(struct mlx5_ct_ft *ft,
 	if (err)
 		goto err_entries;
 
-	if (memcmp(&entry->tuple, &entry->tuple_nat, sizeof(entry->tuple))) {
+	if (has_nat) {
 		err = rhashtable_lookup_insert_fast(&ct_priv->ct_tuples_nat_ht,
 						    &entry->tuple_nat_node,
 						    tuples_nat_ht_params);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index e8e5b347f9b2..fee323ade522 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1677,8 +1677,6 @@ static int mlx5e_alloc_txqsq(struct mlx5e_channel *c,
 	sq->hw_mtu    = MLX5E_SW2HW_MTU(params, params->sw_mtu);
 	sq->max_sq_mpw_wqebbs = mlx5e_get_max_sq_aligned_wqebbs(mdev);
 	INIT_WORK(&sq->recover_work, mlx5e_tx_err_cqe_work);
-	if (!MLX5_CAP_ETH(mdev, wqe_vlan_insert))
-		set_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state);
 	if (mlx5_ipsec_device_caps(c->priv->mdev))
 		set_bit(MLX5E_SQ_STATE_IPSEC, &sq->state);
 	if (param->is_mpw)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index 55a8629f0792..e6a301ba3254 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -256,8 +256,7 @@ mlx5e_tx_wqe_inline_mode(struct mlx5e_txqsq *sq, struct sk_buff *skb,
 
 	mode = sq->min_inline_mode;
 
-	if (skb_vlan_tag_present(skb) &&
-	    test_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state))
+	if (skb_vlan_tag_present(skb))
 		mode = max_t(u8, MLX5_INLINE_MODE_L2, mode);
 
 	return mode;
@@ -483,12 +482,6 @@ mlx5e_sq_xmit_wqe(struct mlx5e_txqsq *sq, struct sk_buff *skb,
 		}
 		eseg->inline_hdr.sz |= cpu_to_be16(ihs);
 		dseg += wqe_attr->ds_cnt_inl;
-	} else if (skb_vlan_tag_present(skb)) {
-		eseg->insert.type = cpu_to_be16(MLX5_ETH_WQE_INSERT_VLAN);
-		if (skb->vlan_proto == cpu_to_be16(ETH_P_8021AD))
-			eseg->insert.type |= cpu_to_be16(MLX5_ETH_WQE_SVLAN);
-		eseg->insert.vlan_tci = cpu_to_be16(skb_vlan_tag_get(skb));
-		stats->added_vlan_packets++;
 	}
 
 	dseg += wqe_attr->ds_cnt_ids;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wc.c b/drivers/net/ethernet/mellanox/mlx5/core/wc.c
index 740b719e7072..2f0316616fa4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/wc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/wc.c
@@ -378,6 +378,9 @@ err_create_cq:
 	mlx5_free_bfreg(mdev, &sq->bfreg);
 err_alloc_bfreg:
 	kfree(sq);
+
+	if (mdev->wc_state == MLX5_WC_STATE_UNSUPPORTED)
+		mlx5_core_warn(mdev, "Write combining is not supported\n");
 }
 
 bool mlx5_wc_support_get(struct mlx5_core_dev *mdev)