diff options
| author | Roland Dreier <rolandd@cisco.com> | 2007-05-20 20:19:24 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-05-20 20:19:24 -0700 |
| commit | 56a8c8b6ac4d6edba5153d17730aaf96ba8f1f8c (patch) | |
| tree | fc28e73631879993d822f4623633caed0e1daa58 /drivers/infiniband | |
| parent | 2446304dd687488c054d0437f2aeef1ef2bfbd02 (diff) | |
| download | op-kernel-dev-56a8c8b6ac4d6edba5153d17730aaf96ba8f1f8c.zip op-kernel-dev-56a8c8b6ac4d6edba5153d17730aaf96ba8f1f8c.tar.gz | |
IB/mlx4: Check if SRQ is full when posting receive
Make mlx4_post_srq_recv() fail if the SRQ is full (head == tail).
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/srq.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c index 42ab4a8..12fac1c 100644 --- a/drivers/infiniband/hw/mlx4/srq.c +++ b/drivers/infiniband/hw/mlx4/srq.c @@ -297,6 +297,12 @@ int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, break; } + if (unlikely(srq->head == srq->tail)) { + err = -ENOMEM; + *bad_wr = wr; + break; + } + srq->wrid[srq->head] = wr->wr_id; next = get_wqe(srq, srq->head); |
