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authorMichael S. Tsirkin <mst@dev.mellanox.co.il>2007-05-27 17:06:42 +0200
committerRoland Dreier <rolandd@cisco.com>2007-05-30 01:07:09 +0200
commit8b7e15772a286d0ef8e4f8eca422ce5368b6fa97 (patch)
tree646d1d449b0f123d2567a16c5c2a341b17b67933 /drivers/infiniband/hw/mthca
parentMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sp... (diff)
downloadlinux-8b7e15772a286d0ef8e4f8eca422ce5368b6fa97.tar.xz
linux-8b7e15772a286d0ef8e4f8eca422ce5368b6fa97.zip
IB/mthca: Fix handling of send CQE with error for QPs connected to SRQ
mthca_free_err_wqe() currently treats both send and receive CQEs identically if a QP is using an SRQ. But for Tavor hardware, send CQEs with error can be chained together even if the RQ is part of SRQ, so we may miss some CQEs. Fix by following the WQE chain for all send CQEs even for non-SRQ QPs. This fixes crashes in IPoIB CM: <https://bugs.openfabrics.org//show_bug.cgi?id=604> Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_qp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 027664979fe2..eef415b12b2e 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -2284,10 +2284,10 @@ void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
struct mthca_next_seg *next;
/*
- * For SRQs, all WQEs generate a CQE, so we're always at the
- * end of the doorbell chain.
+ * For SRQs, all receive WQEs generate a CQE, so we're always
+ * at the end of the doorbell chain.
*/
- if (qp->ibqp.srq) {
+ if (qp->ibqp.srq && !is_send) {
*new_wqe = 0;
return;
}