diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-07-01 04:35:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-01 09:55:59 -0700 |
| commit | fe62546a6afa141c4ab9aef65f5978a1b36cb523 (patch) | |
| tree | 44b317774fc0db45e90c394a1575bb19d08c00bb /drivers/infiniband/hw/ipath/ipath_cq.c | |
| parent | e8a88f09f21c55a7e7f570290ecde570e2c37771 (diff) | |
[PATCH] IB/ipath: enforce device resource limits
These limits are somewhat artificial in that we don't actually have any
device limits. However, the verbs layer expects that such limits exist
and are enforced, so we make up arbitrary (but sensible) limits.
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_cq.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_cq.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c index 392eeb39463..3efee341c9b 100644 --- a/drivers/infiniband/hw/ipath/ipath_cq.c +++ b/drivers/infiniband/hw/ipath/ipath_cq.c @@ -158,10 +158,21 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, struct ib_ucontext *context, struct ib_udata *udata) { + struct ipath_ibdev *dev = to_idev(ibdev); struct ipath_cq *cq; struct ib_wc *wc; struct ib_cq *ret; + if (entries > ib_ipath_max_cqes) { + ret = ERR_PTR(-EINVAL); + goto bail; + } + + if (dev->n_cqs_allocated == ib_ipath_max_cqs) { + ret = ERR_PTR(-ENOMEM); + goto bail; + } + /* * Need to use vmalloc() if we want to support large #s of * entries. @@ -197,6 +208,8 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, ret = &cq->ibcq; + dev->n_cqs_allocated++; + bail: return ret; } @@ -211,9 +224,11 @@ bail: */ int ipath_destroy_cq(struct ib_cq *ibcq) { + struct ipath_ibdev *dev = to_idev(ibcq->device); struct ipath_cq *cq = to_icq(ibcq); tasklet_kill(&cq->comptask); + dev->n_cqs_allocated--; vfree(cq->queue); kfree(cq); |