diff options
| author | santosh.shilimkar@oracle.com <santosh.shilimkar@oracle.com> | 2015-08-23 01:45:30 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-25 23:35:30 +0300 |
| commit | 3049147ca7c8426268433d16d7546a51dede316d (patch) | |
| tree | e1769bc94b7d2744c5bd3724887e018a17469b67 /net/rds/ib_send.c | |
| parent | 4f73113c63bae5cd092c93c2a9835b9d3c7f0b54 (diff) | |
| download | linux-3049147ca7c8426268433d16d7546a51dede316d.tar.xz | |
RDS: Make sure we do a signaled send for large-send
WR(Work Requests )always generate a WC(Work Completion) with
signaled send. Default RDS ib code is setup for un-signaled
completion. Since RDS connction is persistent, we can end up
sending the data even after large-send when the remote end is
not active(for any reason).
By doing a signaled send at least once per large-send,
we can at least detect the problem in work completion
handler there by avoiding sending more data to
inactive remote.
Reviewed-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/ib_send.c')
| -rw-r--r-- | net/rds/ib_send.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index 5d0a704fa039..c576ebeb4115 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -709,6 +709,11 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, if (scat == &rm->data.op_sg[rm->data.op_count]) { prev->s_op = ic->i_data_op; prev->s_wr.send_flags |= IB_SEND_SOLICITED; + if (!(prev->s_wr.send_flags & IB_SEND_SIGNALED)) { + ic->i_unsignaled_wrs = rds_ib_sysctl_max_unsig_wrs; + prev->s_wr.send_flags |= IB_SEND_SIGNALED; + nr_sig++; + } ic->i_data_op = NULL; } |