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| author | Sagi Grimberg <sagig@mellanox.com> | 2014-10-01 14:02:12 +0300 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-10-09 00:06:07 -0700 |
| commit | 6df5a128f0fde6315a44e80b30412997147f5efd (patch) | |
| tree | b26b887f909b95f22ff9360d1180ef8321774783 /drivers/infiniband/ulp/iser/iscsi_iser.h | |
| parent | 6e6fe2fb1d61b4baef1cf350049c6877583681ee (diff) | |
| download | linux-6df5a128f0fde6315a44e80b30412997147f5efd.tar.gz linux-6df5a128f0fde6315a44e80b30412997147f5efd.tar.bz2 linux-6df5a128f0fde6315a44e80b30412997147f5efd.zip | |
IB/iser: Suppress scsi command send completions
Singal completion of every 32 scsi commands and suppress all the rest.
We don't do anything upon getting the completion so no need to "just
consume" it. Cleanup of scsi command is done in cleanup_task callback.
Still keep dataout and control send completions as we may need to
cleanup there. This helps reducing the amount of interrupts/completions
in the IO path.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.h')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h index 6c3743b6860e..f4e9d621826e 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -101,7 +101,6 @@ #define SHIFT_4K 12 #define SIZE_4K (1ULL << SHIFT_4K) #define MASK_4K (~(SIZE_4K-1)) - /* support up to 512KB in one RDMA */ #define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K) #define ISER_DEF_XMIT_CMDS_DEFAULT 512 @@ -146,6 +145,7 @@ ISER_MAX_RX_MISC_PDUS) #define ISER_WC_BATCH_COUNT 16 +#define ISER_SIGNAL_CMD_COUNT 32 #define ISER_VER 0x10 #define ISER_WSV 0x08 @@ -500,7 +500,8 @@ void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task, int iser_post_recvl(struct iser_conn *iser_conn); int iser_post_recvm(struct iser_conn *iser_conn, int count); -int iser_post_send(struct ib_conn *ib_conn, struct iser_tx_desc *tx_desc); +int iser_post_send(struct ib_conn *ib_conn, struct iser_tx_desc *tx_desc, + bool signal); int iser_dma_map_task_data(struct iscsi_iser_task *iser_task, struct iser_data_buf *data, |