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authorChristoph Hellwig <hch@lst.de>2015-10-08 09:16:33 +0100
committerChristoph Hellwig <hch@lst.de>2015-10-08 11:09:10 +0100
commite622f2f4ad2142d2a613a57fb85f8cf737935ef5 (patch)
tree19fa458bcaacf3f8b2f5e40676f748afc3df1e84 /net/rds/ib.h
parentb8cab5dab15ff5c2acc3faefdde28919b0341c11 (diff)
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IB: split struct ib_send_wr
This patch split up struct ib_send_wr so that all non-trivial verbs use their own structure which embedds struct ib_send_wr. This dramaticly shrinks the size of a WR for most common operations: sizeof(struct ib_send_wr) (old): 96 sizeof(struct ib_send_wr): 48 sizeof(struct ib_rdma_wr): 64 sizeof(struct ib_atomic_wr): 96 sizeof(struct ib_ud_wr): 88 sizeof(struct ib_fast_reg_wr): 88 sizeof(struct ib_bind_mw_wr): 96 sizeof(struct ib_sig_handover_wr): 80 And with Sagi's pending MR rework the fast registration WR will also be down to a reasonable size: sizeof(struct ib_fastreg_wr): 64 Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> [srp, srpt] Reviewed-by: Chuck Lever <chuck.lever@oracle.com> [sunrpc] Tested-by: Haggai Eran <haggaie@mellanox.com> Tested-by: Sagi Grimberg <sagig@mellanox.com> Tested-by: Steve Wise <swise@opengridcomputing.com>
Diffstat (limited to 'net/rds/ib.h')
-rw-r--r--net/rds/ib.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h
index aae60fda77f6..301c48385166 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -69,7 +69,11 @@ struct rds_ib_connect_private {
struct rds_ib_send_work {
void *s_op;
- struct ib_send_wr s_wr;
+ union {
+ struct ib_send_wr s_wr;
+ struct ib_rdma_wr s_rdma_wr;
+ struct ib_atomic_wr s_atomic_wr;
+ };
struct ib_sge s_sge[RDS_IB_MAX_SGE];
unsigned long s_queued;
};