This corrects a CQ overflow and timing issue which can be observed in RDS
Signed-off-by: Michael Heinz <[email protected]>
---
net/rds/ib_send.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
index 71f373c..61a317e 100644
--- a/net/rds/ib_send.c
+++ b/net/rds/ib_send.c
@@ -286,10 +286,8 @@ void rds_ib_send_cq_comp_handler(struct ib_cq *cq, void
*context)
rdsdebug("cq %p conn %p\n", cq, conn);
rds_ib_stats_inc(s_ib_tx_cq_call);
- ret = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
- if (ret)
- rdsdebug("ib_req_notify_cq send failed: %d\n", ret);
+again:
while (ib_poll_cq(cq, 1, &wc) > 0) {
rdsdebug("wc wr_id 0x%llx status %u (%s) byte_len %u imm_data
%u\n",
(unsigned long long)wc.wr_id, wc.status,
@@ -347,6 +345,12 @@ void rds_ib_send_cq_comp_handler(struct ib_cq *cq, void
*context)
rds_ib_wc_status_str(wc.status));
}
}
+ ret = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP |
+ IB_CQ_REPORT_MISSED_EVENTS);
+ if (ret > 0)
+ goto again;
+ if (ret < 0)
+ rdsdebug("ib_req_notify_cq send failed: %d\n", ret);
}
/*
--
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