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| author |   Roland Dreier <roland@eddore.topspincom.com> | 2005-08-18 12:24:13 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2005-08-26 20:37:37 -0700 |
| commit | f520ba5aa48e2891c3fb3e364eeaaab4212c7c45 (patch) | |
| tree | ba512b75aaef8bf0c89ab4f75b80c75af5ead60c /drivers/infiniband/core/uverbs_main.c | |
| parent | [PATCH] IB: Add SRQ support to midlayer (diff) | |
| download | linux-dev-f520ba5aa48e2891c3fb3e364eeaaab4212c7c45.tar.xz linux-dev-f520ba5aa48e2891c3fb3e364eeaaab4212c7c45.zip | |
[PATCH] IB: userspace SRQ support
Add SRQ support to userspace verbs module. This adds several commands
and associated structures, but it's OK to do this without bumping the
ABI version because the commands are added at the end of the list so
they don't change the existing numbering. There are two cases to
worry about:
1. New kernel, old userspace. This is OK because old userspace simply
won't try to use the new SRQ commands. None of the old commands are
changed.
2. Old kernel, new userspace. This works perfectly as long as
userspace doesn't try to use SRQ commands. If userspace tries to
use SRQ commands, it will get EINVAL, which is perfectly
reasonable: the kernel doesn't support SRQs, so we couldn't do any
better.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_main.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_main.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index fd8e96359304..09caf5b1ef36 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -69,6 +69,7 @@ DEFINE_IDR(ib_uverbs_mw_idr); DEFINE_IDR(ib_uverbs_ah_idr); DEFINE_IDR(ib_uverbs_cq_idr); DEFINE_IDR(ib_uverbs_qp_idr); +DEFINE_IDR(ib_uverbs_srq_idr); static spinlock_t map_lock; static DECLARE_BITMAP(dev_map, IB_UVERBS_MAX_DEVICES); @@ -93,6 +94,9 @@ static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file, [IB_USER_VERBS_CMD_DESTROY_QP] = ib_uverbs_destroy_qp, [IB_USER_VERBS_CMD_ATTACH_MCAST] = ib_uverbs_attach_mcast, [IB_USER_VERBS_CMD_DETACH_MCAST] = ib_uverbs_detach_mcast, + [IB_USER_VERBS_CMD_CREATE_SRQ] = ib_uverbs_create_srq, + [IB_USER_VERBS_CMD_MODIFY_SRQ] = ib_uverbs_modify_srq, + [IB_USER_VERBS_CMD_DESTROY_SRQ] = ib_uverbs_destroy_srq, }; static struct vfsmount *uverbs_event_mnt; @@ -127,7 +131,14 @@ static int ib_dealloc_ucontext(struct ib_ucontext *context) kfree(uobj); } - /* XXX Free SRQs */ + list_for_each_entry_safe(uobj, tmp, &context->srq_list, list) { + struct ib_srq *srq = idr_find(&ib_uverbs_srq_idr, uobj->id); + idr_remove(&ib_uverbs_srq_idr, uobj->id); + ib_destroy_srq(srq); + list_del(&uobj->list); + kfree(uobj); + } + /* XXX Free MWs */ list_for_each_entry_safe(uobj, tmp, &context->mr_list, list) { @@ -346,6 +357,13 @@ void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr) event->event); } +void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr) +{ + ib_uverbs_async_handler(context_ptr, + event->element.srq->uobject->user_handle, + event->event); +} + static void ib_uverbs_event_handler(struct ib_event_handler *handler, struct ib_event *event) { |