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| author |   Tariq Toukan <tariqt@mellanox.com> | 2016-11-30 17:59:37 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-12-02 10:47:01 -0500 |
| commit | 1c1b522808a18402f043c1418b4e48c7355480cc (patch) | |
| tree | ab6a81cf98628e39cc8f570887487c136b08d92e /include | |
| parent | Merge branch 'altera-tse-sgmii-pcs' (diff) | |
| download | linux-dev-1c1b522808a18402f043c1418b4e48c7355480cc.tar.xz linux-dev-1c1b522808a18402f043c1418b4e48c7355480cc.zip | |
net/mlx5e: Implement Fragmented Work Queue (WQ)
Add new type of struct mlx5_frag_buf which is used to allocate fragmented
buffers rather than contiguous, and make the Completion Queues (CQs) use
it as they are big (default of 2MB per CQ in Striding RQ).
This fixes the failures of type:
"mlx5e_open_locked: mlx5e_open_channels failed, -12"
due to dma_zalloc_coherent insufficient contiguous coherent memory to
satisfy the driver's request when the user tries to setup more or larger
rings.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mlx5/driver.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 68b85efc3908..0ae55361e674 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -318,6 +318,13 @@ struct mlx5_buf { u8 page_shift; }; +struct mlx5_frag_buf { + struct mlx5_buf_list *frags; + int npages; + int size; + u8 page_shift; +}; + struct mlx5_eq_tasklet { struct list_head list; struct list_head process_list; @@ -822,6 +829,9 @@ int mlx5_buf_alloc_node(struct mlx5_core_dev *dev, int size, struct mlx5_buf *buf, int node); int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, struct mlx5_buf *buf); void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf); +int mlx5_frag_buf_alloc_node(struct mlx5_core_dev *dev, int size, + struct mlx5_frag_buf *buf, int node); +void mlx5_frag_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf); struct mlx5_cmd_mailbox *mlx5_alloc_cmd_mailbox_chain(struct mlx5_core_dev *dev, gfp_t flags, int npages); void mlx5_free_cmd_mailbox_chain(struct mlx5_core_dev *dev, @@ -866,6 +876,7 @@ void mlx5_unregister_debugfs(void); int mlx5_eq_init(struct mlx5_core_dev *dev); void mlx5_eq_cleanup(struct mlx5_core_dev *dev); void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas); +void mlx5_fill_page_frag_array(struct mlx5_frag_buf *frag_buf, __be64 *pas); void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn); void mlx5_rsc_event(struct mlx5_core_dev *dev, u32 rsn, int event_type); #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |