mlx5-fixes-2023-02-24

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Merge tag 'mlx5-fixes-2023-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahemeed says:

====================
mlx5 fixes 2023-02-24

V1->V2:
 - Toss away arguably non-fixes patches

This series provides bug fixes for mlx5 driver.
Please pull and let me know if there is any problem.
====================

drivers/net/ethernet/mellanox/mlx5/core/ecpf.c

@@ -98,4 +98,8 @@ void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
 	err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_HOST_PF]);
 	if (err)
 		mlx5_core_warn(dev, "Timeout reclaiming external host PF pages err(%d)\n", err);
+
+	err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_VF]);
+	if (err)
+		mlx5_core_warn(dev, "Timeout reclaiming external host VFs pages err(%d)\n", err);
 }

drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c

@@ -86,7 +86,19 @@ static bool mlx5e_ptp_ts_cqe_drop(struct mlx5e_ptpsq *ptpsq, u16 skb_cc, u16 skb
 	return (ptpsq->ts_cqe_ctr_mask && (skb_cc != skb_id));
 }
 
-static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_cc, u16 skb_id)
+static bool mlx5e_ptp_ts_cqe_ooo(struct mlx5e_ptpsq *ptpsq, u16 skb_id)
+{
+	u16 skb_cc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
+	u16 skb_pc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_pc);
+
+	if (PTP_WQE_CTR2IDX(skb_id - skb_cc) >= PTP_WQE_CTR2IDX(skb_pc - skb_cc))
+		return true;
+
+	return false;
+}
+
+static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_cc,
+					     u16 skb_id, int budget)
 {
 	struct skb_shared_hwtstamps hwts = {};
 	struct sk_buff *skb;
@@ -98,6 +110,7 @@ static void mlx5e_ptp_skb_fifo_ts_cqe_resync(struct mlx5e_ptpsq *ptpsq, u16 skb_
 		hwts.hwtstamp = mlx5e_skb_cb_get_hwts(skb)->cqe_hwtstamp;
 		skb_tstamp_tx(skb, &hwts);
 		ptpsq->cq_stats->resync_cqe++;
+		napi_consume_skb(skb, budget);
 		skb_cc = PTP_WQE_CTR2IDX(ptpsq->skb_fifo_cc);
 	}
 }
@@ -118,8 +131,14 @@ static void mlx5e_ptp_handle_ts_cqe(struct mlx5e_ptpsq *ptpsq,
 		goto out;
 	}
 
-	if (mlx5e_ptp_ts_cqe_drop(ptpsq, skb_cc, skb_id))
-		mlx5e_ptp_skb_fifo_ts_cqe_resync(ptpsq, skb_cc, skb_id);
+	if (mlx5e_ptp_ts_cqe_drop(ptpsq, skb_cc, skb_id)) {
+		if (mlx5e_ptp_ts_cqe_ooo(ptpsq, skb_id)) {
+			/* already handled by a previous resync */
+			ptpsq->cq_stats->ooo_cqe_drop++;
+			return;
+		}
+		mlx5e_ptp_skb_fifo_ts_cqe_resync(ptpsq, skb_cc, skb_id, budget);
+	}
 
 	skb = mlx5e_skb_fifo_pop(&ptpsq->skb_fifo);
 	hwtstamp = mlx5e_cqe_ts_to_ns(sq->ptp_cyc2time, sq->clock, get_cqe_ts(cqe));

drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c

@@ -710,8 +710,7 @@ forward:
 	else
 		napi_gro_receive(rq->cq.napi, skb);
 
-	if (tc_priv.fwd_dev)
-		dev_put(tc_priv.fwd_dev);
+	dev_put(tc_priv.fwd_dev);
 
 	return;
 

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act_stats.c

@@ -37,7 +37,7 @@ mlx5e_tc_act_stats_create(void)
 	int err;
 
 	handle = kvzalloc(sizeof(*handle), GFP_KERNEL);
-	if (IS_ERR(handle))
+	if (!handle)
 		return ERR_PTR(-ENOMEM);
 
 	err = rhashtable_init(&handle->ht, &act_counters_ht_params);

drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h

@@ -86,7 +86,7 @@ void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq);
 static inline bool
 mlx5e_skb_fifo_has_room(struct mlx5e_skb_fifo *fifo)
 {
-	return (*fifo->pc - *fifo->cc) < fifo->mask;
+	return (u16)(*fifo->pc - *fifo->cc) < fifo->mask;
 }
 
 static inline bool
@@ -302,6 +302,8 @@ void mlx5e_skb_fifo_push(struct mlx5e_skb_fifo *fifo, struct sk_buff *skb)
 static inline
 struct sk_buff *mlx5e_skb_fifo_pop(struct mlx5e_skb_fifo *fifo)
 {
+	WARN_ON_ONCE(*fifo->pc == *fifo->cc);
+
 	return *mlx5e_skb_fifo_get(fifo, (*fifo->cc)++);
 }
 

drivers/net/ethernet/mellanox/mlx5/core/en_stats.c

@@ -2138,6 +2138,7 @@ static const struct counter_desc ptp_cq_stats_desc[] = {
 	{ MLX5E_DECLARE_PTP_CQ_STAT(struct mlx5e_ptp_cq_stats, abort_abs_diff_ns) },
 	{ MLX5E_DECLARE_PTP_CQ_STAT(struct mlx5e_ptp_cq_stats, resync_cqe) },
 	{ MLX5E_DECLARE_PTP_CQ_STAT(struct mlx5e_ptp_cq_stats, resync_event) },
+	{ MLX5E_DECLARE_PTP_CQ_STAT(struct mlx5e_ptp_cq_stats, ooo_cqe_drop) },
 };
 
 static const struct counter_desc ptp_rq_stats_desc[] = {

drivers/net/ethernet/mellanox/mlx5/core/en_stats.h

@@ -461,6 +461,7 @@ struct mlx5e_ptp_cq_stats {
 	u64 abort_abs_diff_ns;
 	u64 resync_cqe;
 	u64 resync_event;
+	u64 ooo_cqe_drop;
 };
 
 struct mlx5e_rep_stats {

drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c

@@ -869,7 +869,8 @@ mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw,
 	dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
 	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
 
-	if (rep->vport == MLX5_VPORT_UPLINK)
+	if (MLX5_CAP_ESW_FLOWTABLE(on_esw->dev, flow_source) &&
+	    rep->vport == MLX5_VPORT_UPLINK)
 		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_LOCAL_VPORT;
 
 	flow_rule = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(on_esw),

drivers/net/ethernet/mellanox/mlx5/core/lib/geneve.c

@@ -105,6 +105,7 @@ int mlx5_geneve_tlv_option_add(struct mlx5_geneve *geneve, struct geneve_opt *op
 		geneve->opt_type = opt->type;
 		geneve->obj_id = res;
 		geneve->refcount++;
+		res = 0;
 	}
 
 unlock:

drivers/net/ethernet/mellanox/mlx5/core/sriov.c

@@ -147,6 +147,10 @@ mlx5_device_disable_sriov(struct mlx5_core_dev *dev, int num_vfs, bool clear_vf)
 
 	mlx5_eswitch_disable_sriov(dev->priv.eswitch, clear_vf);
 
+	/* For ECPFs, skip waiting for host VF pages until ECPF is destroyed */
+	if (mlx5_core_is_ecpf(dev))
+		return;
+
 	if (mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_VF]))
 		mlx5_core_warn(dev, "timeout reclaiming VFs pages\n");
 }