diff options
Diffstat (limited to 'drivers/net/mlx4/en_rx.c')
| -rw-r--r-- | drivers/net/mlx4/en_rx.c | 77 |
1 files changed, 17 insertions, 60 deletions
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c index 47b178e2b49..cd084de322f 100644 --- a/drivers/net/mlx4/en_rx.c +++ b/drivers/net/mlx4/en_rx.c @@ -40,16 +40,6 @@ #include "mlx4_en.h" -static void *get_wqe(struct mlx4_en_rx_ring *ring, int n) -{ - int offset = n << ring->srq.wqe_shift; - return ring->buf + offset; -} - -static void mlx4_en_srq_event(struct mlx4_srq *srq, enum mlx4_event type) -{ - return; -} static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr, void **ip_hdr, void **tcpudp_hdr, @@ -154,9 +144,6 @@ static void mlx4_en_init_rx_desc(struct mlx4_en_priv *priv, int possible_frags; int i; - /* Pre-link descriptor */ - rx_desc->next.next_wqe_index = cpu_to_be16((index + 1) & ring->size_mask); - /* Set size and memtype fields */ for (i = 0; i < priv->num_frags; i++) { skb_frags[i].size = priv->frag_info[i].frag_size; @@ -294,9 +281,6 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv, int err; int tmp; - /* Sanity check SRQ size before proceeding */ - if (size >= mdev->dev->caps.max_srq_wqes) - return -EINVAL; ring->prod = 0; ring->cons = 0; @@ -304,7 +288,7 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv, ring->size_mask = size - 1; ring->stride = stride; ring->log_stride = ffs(ring->stride) - 1; - ring->buf_size = ring->size * ring->stride; + ring->buf_size = ring->size * ring->stride + TXBB_SIZE; tmp = size * roundup_pow_of_two(MLX4_EN_MAX_RX_FRAGS * sizeof(struct skb_frag_struct)); @@ -360,15 +344,12 @@ err_ring: int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv) { - struct mlx4_en_dev *mdev = priv->mdev; - struct mlx4_wqe_srq_next_seg *next; struct mlx4_en_rx_ring *ring; int i; int ring_ind; int err; int stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + DS_SIZE * priv->num_frags); - int max_gs = (stride - sizeof(struct mlx4_wqe_srq_next_seg)) / DS_SIZE; for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) { ring = &priv->rx_ring[ring_ind]; @@ -379,6 +360,9 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv) ring->cqn = priv->rx_cq[ring_ind].mcq.cqn; ring->stride = stride; + if (ring->stride <= TXBB_SIZE) + ring->buf += TXBB_SIZE; + ring->log_stride = ffs(ring->stride) - 1; ring->buf_size = ring->size * ring->stride; @@ -405,37 +389,10 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv) ring = &priv->rx_ring[ring_ind]; mlx4_en_update_rx_prod_db(ring); - - /* Configure SRQ representing the ring */ - ring->srq.max = ring->actual_size; - ring->srq.max_gs = max_gs; - ring->srq.wqe_shift = ilog2(ring->stride); - - for (i = 0; i < ring->srq.max; ++i) { - next = get_wqe(ring, i); - next->next_wqe_index = - cpu_to_be16((i + 1) & (ring->srq.max - 1)); - } - - err = mlx4_srq_alloc(mdev->dev, mdev->priv_pdn, &ring->wqres.mtt, - ring->wqres.db.dma, &ring->srq); - if (err){ - en_err(priv, "Failed to allocate srq\n"); - ring_ind--; - goto err_srq; - } - ring->srq.event = mlx4_en_srq_event; } return 0; -err_srq: - while (ring_ind >= 0) { - ring = &priv->rx_ring[ring_ind]; - mlx4_srq_free(mdev->dev, &ring->srq); - ring_ind--; - } - err_buffers: for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) mlx4_en_free_rx_buf(priv, &priv->rx_ring[ring_ind]); @@ -456,7 +413,7 @@ void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv, kfree(ring->lro.lro_arr); mlx4_en_unmap_buffer(&ring->wqres.buf); - mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size); + mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size + TXBB_SIZE); vfree(ring->rx_info); ring->rx_info = NULL; } @@ -464,10 +421,9 @@ void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv, void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv, struct mlx4_en_rx_ring *ring) { - struct mlx4_en_dev *mdev = priv->mdev; - - mlx4_srq_free(mdev->dev, &ring->srq); mlx4_en_free_rx_buf(priv, ring); + if (ring->stride <= TXBB_SIZE) + ring->buf -= TXBB_SIZE; mlx4_en_destroy_allocator(priv, ring); } @@ -835,8 +791,8 @@ void mlx4_en_calc_rx_buf(struct net_device *dev) /* RSS related functions */ -static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, - int qpn, int srqn, int cqn, +static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn, + struct mlx4_en_rx_ring *ring, enum mlx4_qp_state *state, struct mlx4_qp *qp) { @@ -858,13 +814,16 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, qp->event = mlx4_en_sqp_event; memset(context, 0, sizeof *context); - mlx4_en_fill_qp_context(priv, 0, 0, 0, 0, qpn, cqn, srqn, context); + mlx4_en_fill_qp_context(priv, ring->size, ring->stride, 0, 0, + qpn, ring->cqn, context); + context->db_rec_addr = cpu_to_be64(ring->wqres.db.dma); - err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, context, qp, state); + err = mlx4_qp_to_ready(mdev->dev, &ring->wqres.mtt, context, qp, state); if (err) { mlx4_qp_remove(mdev->dev, qp); mlx4_qp_free(mdev->dev, qp); } + mlx4_en_update_rx_prod_db(ring); out: kfree(context); return err; @@ -880,7 +839,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv) void *ptr; int rss_xor = mdev->profile.rss_xor; u8 rss_mask = mdev->profile.rss_mask; - int i, srqn, qpn, cqn; + int i, qpn; int err = 0; int good_qps = 0; @@ -894,10 +853,8 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv) } for (i = 0; i < priv->rx_ring_num; i++) { - cqn = priv->rx_ring[i].cqn; - srqn = priv->rx_ring[i].srq.srqn; qpn = rss_map->base_qpn + i; - err = mlx4_en_config_rss_qp(priv, qpn, srqn, cqn, + err = mlx4_en_config_rss_qp(priv, qpn, &priv->rx_ring[i], &rss_map->state[i], &rss_map->qps[i]); if (err) @@ -920,7 +877,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv) } rss_map->indir_qp.event = mlx4_en_sqp_event; mlx4_en_fill_qp_context(priv, 0, 0, 0, 1, priv->base_qpn, - priv->rx_ring[0].cqn, 0, &context); + priv->rx_ring[0].cqn, &context); ptr = ((void *) &context) + 0x3c; rss_context = (struct mlx4_en_rss_context *) ptr; |