netdev - [net-next 13/16] net/mlx5e: Add XDP SQs to uplink representors steering tables

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Message-Id: <20220518064938.128220-14-saeed@kernel.org>
Date:   Tue, 17 May 2022 23:49:35 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, Gal Pressman <gal@...dia.com>,
        Maor Dickman <maord@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 13/16] net/mlx5e: Add XDP SQs to uplink representors steering tables

From: Gal Pressman <gal@...dia.com>

This patch adds the XDP SQs to the uplink representors steering tables
in swichdev mode and enables XDP usage on them.

Signed-off-by: Gal Pressman <gal@...dia.com>
Reviewed-by: Maor Dickman <maord@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/en_rep.c    | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index aa32b1062f7a..eb90e79388f1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -399,7 +399,9 @@ static int mlx5e_sqs2vport_start(struct mlx5_eswitch *esw,
 
 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
 {
+	int sqs_per_channel = mlx5e_get_dcb_num_tc(&priv->channels.params);
 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
+	bool is_uplink_rep = mlx5e_is_uplink_rep(priv);
 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
 	struct mlx5_eswitch_rep *rep = rpriv->rep;
 	int n, tc, nch, num_sqs = 0;
@@ -411,9 +413,13 @@ int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
 	ptp_sq = !!(priv->channels.ptp &&
 		    MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_TX_PORT_TS));
 	nch = priv->channels.num + ptp_sq;
+	/* +2 for xdpsqs, they don't exist on the ptp channel but will not be
+	 * counted for by num_sqs.
+	 */
+	if (is_uplink_rep)
+		sqs_per_channel += 2;
 
-	sqs = kvcalloc(nch * mlx5e_get_dcb_num_tc(&priv->channels.params), sizeof(*sqs),
-		       GFP_KERNEL);
+	sqs = kvcalloc(nch * sqs_per_channel, sizeof(*sqs), GFP_KERNEL);
 	if (!sqs)
 		goto out;
 
@@ -421,6 +427,13 @@ int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
 		c = priv->channels.c[n];
 		for (tc = 0; tc < c->num_tc; tc++)
 			sqs[num_sqs++] = c->sq[tc].sqn;
+
+		if (is_uplink_rep) {
+			if (c->xdp)
+				sqs[num_sqs++] = c->rq_xdpsq.sqn;
+
+			sqs[num_sqs++] = c->xdpsq.sqn;
+		}
 	}
 	if (ptp_sq) {
 		struct mlx5e_ptp *ptp_ch = priv->channels.ptp;
-- 
2.36.1