From c3bccbfbb71f5e8a77129c7a069f5c5648cc9cf1 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Sun, 29 Apr 2012 17:04:22 +0300 Subject: IB/core: Use qp->usecnt to track multicast attach/detach Just as we don't allow PDs, CQs, etc. to be destroyed if there are QPs that are attached to them, don't let a QP be destroyed if there are multicast group(s) attached to it. Use the existing usecnt field of struct ib_qp which was added by commit 0e0ec7e ("RDMA/core: Export ib_open_qp() to share XRC TGT QPs") to track this. Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/rdma/ib_verbs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/rdma/ib_verbs.h') diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index c3cca5a4dacd..c84d1016618e 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -964,7 +964,7 @@ struct ib_qp { struct ib_srq *srq; struct ib_xrcd *xrcd; /* XRC TGT QPs only */ struct list_head xrcd_list; - atomic_t usecnt; /* count times opened */ + atomic_t usecnt; /* count times opened, mcast attaches */ struct list_head open_list; struct ib_qp *real_qp; struct ib_uobject *uobject; -- cgit v1.2.3