Commit 99cbfa93 authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed
Browse files

net/mlx5e: RX, Use cyclic WQ in legacy RQ



Now that LRO is not supported for Legacy RQ, there is no source of
out-of-order completions in the WQ, and we can use a cyclic one.
This has multiple advantages:
- reduces the WQE size (smaller PCI transactions).
- lower overhead in datapath (no handling of 'next' pointers).
- no reserved WQE for the WQ head (was need in linked-list).
- allows using a constant map between frag and dma_info struct, in downstream patch.

Performance tests:
ConnectX-4, single core, single RX ring.
Major gain in packet rate of single ring XDP drop.
Bottleneck is shifted form HW (at 16Mpps) to SW (at 20Mpps).

Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent 422d4c40
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+7 −3
Original line number Diff line number Diff line
@@ -186,9 +186,13 @@ struct mlx5e_tx_wqe {
	struct mlx5_wqe_data_seg data[0];
};

struct mlx5e_rx_wqe {
struct mlx5e_rx_wqe_ll {
	struct mlx5_wqe_srq_next_seg  next;
	struct mlx5_wqe_data_seg      data;
	struct mlx5_wqe_data_seg      data[0];
};

struct mlx5e_rx_wqe_cyc {
	struct mlx5_wqe_data_seg      data[0];
};

struct mlx5e_umr_wqe {
@@ -500,7 +504,7 @@ struct mlx5e_rq {
	/* data path */
	union {
		struct {
			struct mlx5_wq_ll      wq;
			struct mlx5_wq_cyc     wq;
			struct mlx5e_wqe_frag_info *frag_info;
			u32 frag_sz;	/* max possible skb frag_sz */
			union {
+51 −38
Original line number Diff line number Diff line
@@ -166,7 +166,7 @@ static u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,

	linear_rq_headroom += NET_IP_ALIGN;

	if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST)
	if (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC)
		return linear_rq_headroom;

	if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
@@ -205,7 +205,7 @@ void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
	params->rq_wq_type = mlx5e_striding_rq_possible(mdev, params) &&
		MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) ?
		MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
		MLX5_WQ_TYPE_LINKED_LIST;
		MLX5_WQ_TYPE_CYCLIC;
}

static void mlx5e_update_carrier(struct mlx5e_priv *priv)
@@ -325,7 +325,7 @@ static u32 mlx5e_rqwq_get_size(struct mlx5e_rq *rq)
	case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
		return mlx5_wq_ll_get_size(&rq->mpwqe.wq);
	default:
		return mlx5_wq_ll_get_size(&rq->wqe.wq);
		return mlx5_wq_cyc_get_size(&rq->wqe.wq);
	}
}

@@ -491,15 +491,15 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,
		if (err)
			goto err_destroy_umr_mkey;
		break;
	default: /* MLX5_WQ_TYPE_LINKED_LIST */
		err = mlx5_wq_ll_create(mdev, &rqp->wq, rqc_wq, &rq->wqe.wq,
	default: /* MLX5_WQ_TYPE_CYCLIC */
		err = mlx5_wq_cyc_create(mdev, &rqp->wq, rqc_wq, &rq->wqe.wq,
					 &rq->wq_ctrl);
		if (err)
			return err;

		rq->wqe.wq.db = &rq->wqe.wq.db[MLX5_RCV_DBR];

		wq_sz = mlx5_wq_ll_get_size(&rq->wqe.wq);
		wq_sz = mlx5_wq_cyc_get_size(&rq->wqe.wq);

		rq->wqe.frag_info =
			kzalloc_node(wq_sz * sizeof(*rq->wqe.frag_info),
@@ -568,19 +568,19 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,

	for (i = 0; i < wq_sz; i++) {
		if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
			struct mlx5e_rx_wqe *wqe =
			struct mlx5e_rx_wqe_ll *wqe =
				mlx5_wq_ll_get_wqe(&rq->mpwqe.wq, i);
			u64 dma_offset = mlx5e_get_mpwqe_offset(rq, i);

			wqe->data.addr = cpu_to_be64(dma_offset + rq->buff.headroom);
			wqe->data.byte_count = cpu_to_be32(byte_count);
			wqe->data.lkey = rq->mkey_be;
			wqe->data[0].addr = cpu_to_be64(dma_offset + rq->buff.headroom);
			wqe->data[0].byte_count = cpu_to_be32(byte_count);
			wqe->data[0].lkey = rq->mkey_be;
		} else {
			struct mlx5e_rx_wqe *wqe =
				mlx5_wq_ll_get_wqe(&rq->wqe.wq, i);
			struct mlx5e_rx_wqe_cyc *wqe =
				mlx5_wq_cyc_get_wqe(&rq->wqe.wq, i);

			wqe->data.byte_count = cpu_to_be32(byte_count);
			wqe->data.lkey = rq->mkey_be;
			wqe->data[0].byte_count = cpu_to_be32(byte_count);
			wqe->data[0].lkey = rq->mkey_be;
		}
	}

@@ -630,7 +630,7 @@ static void mlx5e_free_rq(struct mlx5e_rq *rq)
		kfree(rq->mpwqe.info);
		mlx5_core_destroy_mkey(rq->mdev, &rq->umr_mkey);
		break;
	default: /* MLX5_WQ_TYPE_LINKED_LIST */
	default: /* MLX5_WQ_TYPE_CYCLIC */
		kfree(rq->wqe.frag_info);
	}

@@ -801,11 +801,12 @@ static void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
	if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
		struct mlx5_wq_ll *wq = &rq->mpwqe.wq;

		/* UMR WQE (if in progress) is always at wq->head */
		if (rq->mpwqe.umr_in_progress)
			mlx5e_free_rx_mpwqe(rq, &rq->mpwqe.info[wq->head]);

		while (!mlx5_wq_ll_is_empty(wq)) {
			struct mlx5e_rx_wqe *wqe;
			struct mlx5e_rx_wqe_ll *wqe;

			wqe_ix_be = *wq->tail_next;
			wqe_ix    = be16_to_cpu(wqe_ix_be);
@@ -815,24 +816,19 @@ static void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
				       &wqe->next.next_wqe_index);
		}
	} else {
		struct mlx5_wq_ll *wq = &rq->wqe.wq;
		struct mlx5_wq_cyc *wq = &rq->wqe.wq;

		while (!mlx5_wq_ll_is_empty(wq)) {
			struct mlx5e_rx_wqe *wqe;

			wqe_ix_be = *wq->tail_next;
			wqe_ix    = be16_to_cpu(wqe_ix_be);
			wqe       = mlx5_wq_ll_get_wqe(wq, wqe_ix);
		while (!mlx5_wq_cyc_is_empty(wq)) {
			wqe_ix = mlx5_wq_cyc_get_tail(wq);
			rq->dealloc_wqe(rq, wqe_ix);
			mlx5_wq_ll_pop(wq, wqe_ix_be,
				       &wqe->next.next_wqe_index);
			mlx5_wq_cyc_pop(wq);
		}

		/* Clean outstanding pages on handled WQEs that decided to do page-reuse,
		 * but yet to be re-posted.
		 */
		if (rq->wqe.page_reuse) {
			int wq_sz = mlx5_wq_ll_get_size(wq);
			int wq_sz = mlx5_wq_cyc_get_size(wq);

			for (wqe_ix = 0; wqe_ix < wq_sz; wqe_ix++)
				rq->dealloc_wqe(rq, wqe_ix);
@@ -1958,6 +1954,21 @@ static void mlx5e_close_channel(struct mlx5e_channel *c)
	kfree(c);
}

static inline u8 mlx5e_get_rqwq_log_stride(u8 wq_type, int ndsegs)
{
	int sz = sizeof(struct mlx5_wqe_data_seg) * ndsegs;

	switch (wq_type) {
	case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
		sz += sizeof(struct mlx5e_rx_wqe_ll);
		break;
	default: /* MLX5_WQ_TYPE_CYCLIC */
		sz += sizeof(struct mlx5e_rx_wqe_cyc);
	}

	return order_base_2(sz);
}

static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
				 struct mlx5e_params *params,
				 struct mlx5e_rq_param *param)
@@ -1965,6 +1976,7 @@ static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
	struct mlx5_core_dev *mdev = priv->mdev;
	void *rqc = param->rqc;
	void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
	int ndsegs = 1;

	switch (params->rq_wq_type) {
	case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
@@ -1974,16 +1986,16 @@ static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
		MLX5_SET(wq, wq, log_wqe_stride_size,
			 mlx5e_mpwqe_get_log_stride_size(mdev, params) -
			 MLX5_MPWQE_LOG_STRIDE_SZ_BASE);
		MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ);
		MLX5_SET(wq, wq, log_wq_sz, mlx5e_mpwqe_get_log_rq_size(params));
		break;
	default: /* MLX5_WQ_TYPE_LINKED_LIST */
		MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
	default: /* MLX5_WQ_TYPE_CYCLIC */
		MLX5_SET(wq, wq, log_wq_sz, params->log_rq_mtu_frames);
	}

	MLX5_SET(wq, wq, wq_type,          params->rq_wq_type);
	MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
	MLX5_SET(wq, wq, log_wq_stride,    ilog2(sizeof(struct mlx5e_rx_wqe)));
	MLX5_SET(wq, wq, log_wq_stride,
		 mlx5e_get_rqwq_log_stride(params->rq_wq_type, ndsegs));
	MLX5_SET(wq, wq, pd,               mdev->mlx5e_res.pdn);
	MLX5_SET(rqc, rqc, counter_set_id, priv->q_counter);
	MLX5_SET(rqc, rqc, vsd,            params->vlan_strip_disable);
@@ -1999,8 +2011,9 @@ static void mlx5e_build_drop_rq_param(struct mlx5e_priv *priv,
	void *rqc = param->rqc;
	void *wq = MLX5_ADDR_OF(rqc, rqc, wq);

	MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
	MLX5_SET(wq, wq, log_wq_stride,    ilog2(sizeof(struct mlx5e_rx_wqe)));
	MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
	MLX5_SET(wq, wq, log_wq_stride,
		 mlx5e_get_rqwq_log_stride(MLX5_WQ_TYPE_CYCLIC, 1));
	MLX5_SET(rqc, rqc, counter_set_id, priv->drop_rq_q_counter);

	param->wq.buf_numa_node = dev_to_node(&mdev->pdev->dev);
@@ -2051,7 +2064,7 @@ static void mlx5e_build_rx_cq_param(struct mlx5e_priv *priv,
		log_cq_size = mlx5e_mpwqe_get_log_rq_size(params) +
			mlx5e_mpwqe_get_log_num_strides(mdev, params);
		break;
	default: /* MLX5_WQ_TYPE_LINKED_LIST */
	default: /* MLX5_WQ_TYPE_CYCLIC */
		log_cq_size = params->log_rq_mtu_frames;
	}

@@ -2857,7 +2870,7 @@ static int mlx5e_alloc_drop_rq(struct mlx5_core_dev *mdev,

	param->wq.db_numa_node = param->wq.buf_numa_node;

	err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wqe.wq,
	err = mlx5_wq_cyc_create(mdev, &param->wq, rqc_wq, &rq->wqe.wq,
				 &rq->wq_ctrl);
	if (err)
		return err;
@@ -3360,7 +3373,7 @@ static int set_feature_lro(struct net_device *netdev, bool enable)
	new_channels.params = *old_params;
	new_channels.params.lro_en = enable;

	if (old_params->rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST) {
	if (old_params->rq_wq_type != MLX5_WQ_TYPE_CYCLIC) {
		if (mlx5e_rx_mpwqe_is_linear_skb(mdev, old_params) ==
		    mlx5e_rx_mpwqe_is_linear_skb(mdev, &new_channels.params))
			reset = false;
@@ -3566,7 +3579,7 @@ int mlx5e_change_mtu(struct net_device *netdev, int new_mtu,
	new_channels.params = *params;
	new_channels.params.sw_mtu = new_mtu;

	if (params->rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST) {
	if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
		u8 ppw_old = mlx5e_mpwqe_log_pkts_per_wqe(params);
		u8 ppw_new = mlx5e_mpwqe_log_pkts_per_wqe(&new_channels.params);

+1 −1
Original line number Diff line number Diff line
@@ -927,7 +927,7 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev,
	params->hard_mtu    = MLX5E_ETH_HARD_MTU;
	params->sw_mtu      = mtu;
	params->log_sq_size = MLX5E_REP_PARAMS_LOG_SQ_SIZE;
	params->rq_wq_type  = MLX5_WQ_TYPE_LINKED_LIST;
	params->rq_wq_type  = MLX5_WQ_TYPE_CYCLIC;
	params->log_rq_mtu_frames = MLX5E_REP_PARAMS_LOG_RQ_SIZE;

	params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
+51 −64
Original line number Diff line number Diff line
@@ -113,7 +113,7 @@ static inline void mlx5e_decompress_cqe(struct mlx5e_rq *rq,
			mpwrq_get_cqe_consumed_strides(&cq->title);
	else
		cq->decmprs_wqe_counter =
			mlx5_wq_ll_ctr2ix(&rq->wqe.wq, cq->decmprs_wqe_counter + 1);
			mlx5_wq_cyc_ctr2ix(&rq->wqe.wq, cq->decmprs_wqe_counter + 1);
}

static inline void mlx5e_decompress_cqe_no_hash(struct mlx5e_rq *rq,
@@ -270,7 +270,12 @@ static inline bool mlx5e_page_reuse(struct mlx5e_rq *rq,
		!mlx5e_page_is_reserved(wi->di.page);
}

static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe *wqe, u16 ix)
static inline struct mlx5e_wqe_frag_info *get_frag(struct mlx5e_rq *rq, u16 ix)
{
	return &rq->wqe.frag_info[ix];
}

static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe_cyc *wqe, u16 ix)
{
	struct mlx5e_wqe_frag_info *wi = &rq->wqe.frag_info[ix];

@@ -281,7 +286,7 @@ static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe *wqe, u16
		wi->offset = 0;
	}

	wqe->data.addr = cpu_to_be64(wi->di.addr + wi->offset + rq->buff.headroom);
	wqe->data[0].addr = cpu_to_be64(wi->di.addr + wi->offset + rq->buff.headroom);
	return 0;
}

@@ -370,7 +375,7 @@ void mlx5e_free_rx_mpwqe(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi)
static void mlx5e_post_rx_mpwqe(struct mlx5e_rq *rq)
{
	struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
	struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(wq, wq->head);
	struct mlx5e_rx_wqe_ll *wqe = mlx5_wq_ll_get_wqe(wq, wq->head);

	rq->mpwqe.umr_in_progress = false;

@@ -470,31 +475,32 @@ void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix)

bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq)
{
	struct mlx5_wq_ll *wq = &rq->wqe.wq;
	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
	int err;

	if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
		return false;

	if (mlx5_wq_ll_is_full(wq))
	if (mlx5_wq_cyc_is_full(wq))
		return false;

	do {
		struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(wq, wq->head);
		u16 head = mlx5_wq_cyc_get_head(wq);
		struct mlx5e_rx_wqe_cyc *wqe = mlx5_wq_cyc_get_wqe(wq, head);

		err = mlx5e_alloc_rx_wqe(rq, wqe, wq->head);
		err = mlx5e_alloc_rx_wqe(rq, wqe, head);
		if (unlikely(err)) {
			rq->stats->buff_alloc_err++;
			break;
		}

		mlx5_wq_ll_push(wq, be16_to_cpu(wqe->next.next_wqe_index));
	} while (!mlx5_wq_ll_is_full(wq));
		mlx5_wq_cyc_push(wq);
	} while (!mlx5_wq_cyc_is_full(wq));

	/* ensure wqes are visible to device before updating doorbell record */
	dma_wmb();

	mlx5_wq_ll_update_db_record(wq);
	mlx5_wq_cyc_update_db_record(wq);

	return !!err;
}
@@ -987,18 +993,14 @@ struct sk_buff *skb_from_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,

void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
{
	struct mlx5_wq_ll *wq = &rq->wqe.wq;
	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
	struct mlx5e_wqe_frag_info *wi;
	struct mlx5e_rx_wqe *wqe;
	__be16 wqe_counter_be;
	struct sk_buff *skb;
	u16 wqe_counter;
	u32 cqe_bcnt;
	u16 ci;

	wqe_counter_be = cqe->wqe_counter;
	wqe_counter    = be16_to_cpu(wqe_counter_be);
	wqe            = mlx5_wq_ll_get_wqe(wq, wqe_counter);
	wi             = &rq->wqe.frag_info[wqe_counter];
	ci       = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
	wi       = get_frag(rq, ci);
	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);

	skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt);
@@ -1007,20 +1009,19 @@ void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
		if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
			wi->di.page = NULL;
			/* do not return page to cache, it will be returned on XDP_TX completion */
			goto wq_ll_pop;
			goto wq_cyc_pop;
		}
		/* probably an XDP_DROP, save the page-reuse checks */
		mlx5e_free_rx_wqe(rq, wi);
		goto wq_ll_pop;
		goto wq_cyc_pop;
	}

	mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
	napi_gro_receive(rq->cq.napi, skb);

	mlx5e_free_rx_wqe_reuse(rq, wi);
wq_ll_pop:
	mlx5_wq_ll_pop(wq, wqe_counter_be,
		       &wqe->next.next_wqe_index);
wq_cyc_pop:
	mlx5_wq_cyc_pop(wq);
}

#ifdef CONFIG_MLX5_ESWITCH
@@ -1030,18 +1031,14 @@ void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
	struct mlx5e_priv *priv = netdev_priv(netdev);
	struct mlx5e_rep_priv *rpriv  = priv->ppriv;
	struct mlx5_eswitch_rep *rep = rpriv->rep;
	struct mlx5_wq_ll *wq = &rq->wqe.wq;
	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
	struct mlx5e_wqe_frag_info *wi;
	struct mlx5e_rx_wqe *wqe;
	struct sk_buff *skb;
	__be16 wqe_counter_be;
	u16 wqe_counter;
	u32 cqe_bcnt;
	u16 ci;

	wqe_counter_be = cqe->wqe_counter;
	wqe_counter    = be16_to_cpu(wqe_counter_be);
	wqe            = mlx5_wq_ll_get_wqe(wq, wqe_counter);
	wi             = &rq->wqe.frag_info[wqe_counter];
	ci       = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
	wi       = get_frag(rq, ci);
	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);

	skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt);
@@ -1049,11 +1046,11 @@ void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
		if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
			wi->di.page = NULL;
			/* do not return page to cache, it will be returned on XDP_TX completion */
			goto wq_ll_pop;
			goto wq_cyc_pop;
		}
		/* probably an XDP_DROP, save the page-reuse checks */
		mlx5e_free_rx_wqe(rq, wi);
		goto wq_ll_pop;
		goto wq_cyc_pop;
	}

	mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
@@ -1064,9 +1061,8 @@ void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
	napi_gro_receive(rq->cq.napi, skb);

	mlx5e_free_rx_wqe_reuse(rq, wi);
wq_ll_pop:
	mlx5_wq_ll_pop(wq, wqe_counter_be,
		       &wqe->next.next_wqe_index);
wq_cyc_pop:
	mlx5_wq_cyc_pop(wq);
}
#endif

@@ -1165,7 +1161,7 @@ void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
	u32 wqe_offset     = stride_ix << rq->mpwqe.log_stride_sz;
	u32 head_offset    = wqe_offset & (PAGE_SIZE - 1);
	u32 page_idx       = wqe_offset >> PAGE_SHIFT;
	struct mlx5e_rx_wqe *wqe;
	struct mlx5e_rx_wqe_ll *wqe;
	struct mlx5_wq_ll *wq;
	struct sk_buff *skb;
	u16 cqe_bcnt;
@@ -1403,18 +1399,14 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,

void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
{
	struct mlx5_wq_ll *wq = &rq->wqe.wq;
	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
	struct mlx5e_wqe_frag_info *wi;
	struct mlx5e_rx_wqe *wqe;
	__be16 wqe_counter_be;
	struct sk_buff *skb;
	u16 wqe_counter;
	u32 cqe_bcnt;
	u16 ci;

	wqe_counter_be = cqe->wqe_counter;
	wqe_counter    = be16_to_cpu(wqe_counter_be);
	wqe            = mlx5_wq_ll_get_wqe(wq, wqe_counter);
	wi             = &rq->wqe.frag_info[wqe_counter];
	ci       = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
	wi       = get_frag(rq, ci);
	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);

	skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt);
@@ -1430,8 +1422,7 @@ void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)

wq_free_wqe:
	mlx5e_free_rx_wqe_reuse(rq, wi);
	mlx5_wq_ll_pop(wq, wqe_counter_be,
		       &wqe->next.next_wqe_index);
	mlx5_wq_cyc_pop(wq);
}

#endif /* CONFIG_MLX5_CORE_IPOIB */
@@ -1440,38 +1431,34 @@ wq_free_wqe:

void mlx5e_ipsec_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
{
	struct mlx5_wq_ll *wq = &rq->wqe.wq;
	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
	struct mlx5e_wqe_frag_info *wi;
	struct mlx5e_rx_wqe *wqe;
	__be16 wqe_counter_be;
	struct sk_buff *skb;
	u16 wqe_counter;
	u32 cqe_bcnt;
	u16 ci;

	wqe_counter_be = cqe->wqe_counter;
	wqe_counter    = be16_to_cpu(wqe_counter_be);
	wqe            = mlx5_wq_ll_get_wqe(wq, wqe_counter);
	wi             = &rq->wqe.frag_info[wqe_counter];
	ci       = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
	wi       = get_frag(rq, ci);
	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);

	skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt);
	if (unlikely(!skb)) {
		/* a DROP, save the page-reuse checks */
		mlx5e_free_rx_wqe(rq, wi);
		goto wq_ll_pop;
		goto wq_cyc_pop;
	}
	skb = mlx5e_ipsec_handle_rx_skb(rq->netdev, skb);
	if (unlikely(!skb)) {
		mlx5e_free_rx_wqe(rq, wi);
		goto wq_ll_pop;
		goto wq_cyc_pop;
	}

	mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
	napi_gro_receive(rq->cq.napi, skb);

	mlx5e_free_rx_wqe_reuse(rq, wi);
wq_ll_pop:
	mlx5_wq_ll_pop(wq, wqe_counter_be, &wqe->next.next_wqe_index);
wq_cyc_pop:
	mlx5_wq_cyc_pop(wq);
}

#endif /* CONFIG_MLX5_EN_IPSEC */
+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
	mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
		      MLX5_GET(wq, wqc, log_wq_sz),
		      fbc);
	wq->sz    = wq->fbc.sz_m1 + 1;

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
Loading