diff options
| author | Roland Dreier <rolandd@cisco.com> | 2005-10-06 13:15:56 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2005-10-17 15:20:28 -0700 |
| commit | 90f104da22bbf2e2b8a2136c12fb4e013fccf504 (patch) | |
| tree | d720f4b226cd72903ee878096707578ccc7abc0c /drivers/infiniband/hw/mthca/mthca_srq.c | |
| parent | 116c0074ecfd6f061570856bec52b691d54dbd3c (diff) | |
| download | kernel_samsung_smdk4412-90f104da22bbf2e2b8a2136c12fb4e013fccf504.zip kernel_samsung_smdk4412-90f104da22bbf2e2b8a2136c12fb4e013fccf504.tar.gz kernel_samsung_smdk4412-90f104da22bbf2e2b8a2136c12fb4e013fccf504.tar.bz2 | |
[IB] mthca: SRQ limit reached events
Our hardware supports generating an event when the number of receives
posted to a shared receive queue (SRQ) falls below a user-specified
limit. Implement mthca_modify_srq() to arm the limit, and add code to
handle dispatching SRQ events when they occur.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_srq.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_srq.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c index 18998d4..13d2290 100644 --- a/drivers/infiniband/hw/mthca/mthca_srq.c +++ b/drivers/infiniband/hw/mthca/mthca_srq.c @@ -332,6 +332,29 @@ void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq) mthca_free_mailbox(dev, mailbox); } +int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, + enum ib_srq_attr_mask attr_mask) +{ + struct mthca_dev *dev = to_mdev(ibsrq->device); + struct mthca_srq *srq = to_msrq(ibsrq); + int ret; + u8 status; + + /* We don't support resizing SRQs (yet?) */ + if (attr_mask & IB_SRQ_MAX_WR) + return -EINVAL; + + if (attr_mask & IB_SRQ_LIMIT) { + ret = mthca_ARM_SRQ(dev, srq->srqn, attr->srq_limit, &status); + if (ret) + return ret; + if (status) + return -EINVAL; + } + + return 0; +} + void mthca_srq_event(struct mthca_dev *dev, u32 srqn, enum ib_event_type event_type) { @@ -354,7 +377,7 @@ void mthca_srq_event(struct mthca_dev *dev, u32 srqn, event.device = &dev->ib_dev; event.event = event_type; - event.element.srq = &srq->ibsrq; + event.element.srq = &srq->ibsrq; srq->ibsrq.event_handler(&event, srq->ibsrq.srq_context); out: |