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| author | Sagi Grimberg <sagig@mellanox.com> | 2014-10-01 14:02:10 +0300 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-10-09 00:06:07 -0700 |
| commit | ff3dd52d267165347d6f92a90016e692d074a00c (patch) | |
| tree | 2edd94cf4b5c3974e6f475e7b82714e9367b09fc /drivers/infiniband/ulp/iser/iscsi_iser.h | |
| parent | 6aabfa76f5e5281e5db128a34420d8f33b8574f7 (diff) | |
| download | talos-op-linux-ff3dd52d267165347d6f92a90016e692d074a00c.tar.gz talos-op-linux-ff3dd52d267165347d6f92a90016e692d074a00c.zip | |
IB/iser: Use beacon to indicate all completions were consumed
Avoid post_send counting (atomic) in the IO path just to keep track of
how many completions we need to consume. Use a beacon post to indicate
that all prior posts completed.
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 1617c5cce8b1..4fcb25604d80 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -150,6 +150,7 @@ #define ISER_RSV 0x04 #define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL +#define ISER_BEACON_WRID 0xfffffffffffffffeULL struct iser_hdr { u8 flags; @@ -335,11 +336,11 @@ struct fast_reg_descriptor { * @cma_id: rdma_cm connection maneger handle * @qp: Connection Queue-pair * @post_recv_buf_count: post receive counter - * @post_send_buf_count: post send counter * @rx_wr: receive work request for batch posts * @device: reference to iser device * @comp: iser completion context * @pi_support: Indicate device T10-PI support + * @beacon: beacon send wr to signal all flush errors were drained * @flush_comp: completes when all connection completions consumed * @lock: protects fmr/fastreg pool * @union.fmr: @@ -355,11 +356,11 @@ struct ib_conn { struct rdma_cm_id *cma_id; struct ib_qp *qp; int post_recv_buf_count; - atomic_t post_send_buf_count; struct ib_recv_wr rx_wr[ISER_MIN_POSTED_RX]; struct iser_device *device; struct iser_comp *comp; bool pi_support; + struct ib_send_wr beacon; struct completion flush_comp; spinlock_t lock; union { |
