From 40837273d084ad1584dbaea5e8fbefe0a64f2a6b Mon Sep 17 00:00:00 2001 From: Shiraz Saleem Date: Tue, 3 Oct 2017 11:11:48 -0500 Subject: i40iw: Do not allow posting WR after QP is flushed A Work Request (WR) posted after QP is flushed will not get a flush completion. Correct this problem by not allowing posting of WRs after a QP is flushed. Fixes: d37498417947 ("i40iw: add files for iwarp interface") Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford --- drivers/infiniband/hw/i40iw/i40iw_verbs.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/infiniband/hw/i40iw/i40iw_verbs.c') diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 28b3d02d511b..58d815f06e4e 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -2202,6 +2202,12 @@ static int i40iw_post_send(struct ib_qp *ibqp, ukqp = &iwqp->sc_qp.qp_uk; spin_lock_irqsave(&iwqp->lock, flags); + + if (iwqp->flush_issued) { + err = -EINVAL; + goto out; + } + while (ib_wr) { inv_stag = false; memset(&info, 0, sizeof(info)); @@ -2344,6 +2350,7 @@ static int i40iw_post_send(struct ib_qp *ibqp, ib_wr = ib_wr->next; } +out: if (err) *bad_wr = ib_wr; else @@ -2376,6 +2383,12 @@ static int i40iw_post_recv(struct ib_qp *ibqp, memset(&post_recv, 0, sizeof(post_recv)); spin_lock_irqsave(&iwqp->lock, flags); + + if (iwqp->flush_issued) { + err = -EINVAL; + goto out; + } + while (ib_wr) { post_recv.num_sges = ib_wr->num_sge; post_recv.wr_id = ib_wr->wr_id; -- cgit v1.2.3