From: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>,
stable-Xl5UnYtxxKxKUA01WzcqbQ@public.gmane.org
Subject: [PATCH] vmw_pvrdma: Avoid rounding up of sge count to power of 2
Date: Thu, 15 Feb 2018 16:39:52 -0800 [thread overview]
Message-ID: <1518741592-12723-1-git-send-email-aditr@vmware.com> (raw)
Creation of resources can fail if the rounding up exceeds
provider supported values.
Fixes: 4c8ed14eb6b7 ("vmw_pvrdma: Add SRQ support")
Reviewed-by: Bryan Tan <bryantan-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Nitish Bhat <bnitish-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Cc: stable-Xl5UnYtxxKxKUA01WzcqbQ@public.gmane.org
---
providers/vmw_pvrdma/qp.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/providers/vmw_pvrdma/qp.c b/providers/vmw_pvrdma/qp.c
index efcc99b..4b9f897 100644
--- a/providers/vmw_pvrdma/qp.c
+++ b/providers/vmw_pvrdma/qp.c
@@ -113,7 +113,7 @@ struct ibv_srq *pvrdma_create_srq(struct ibv_pd *pd,
int ret;
attr->attr.max_wr = align_next_power2(max_t(uint32_t, 1U, attr->attr.max_wr));
- attr->attr.max_sge = align_next_power2(max_t(uint32_t, 1U, attr->attr.max_sge));
+ attr->attr.max_sge = max_t(uint32_t, 1U, attr->attr.max_sge);
srq = malloc(sizeof(*srq));
if (!srq)
@@ -216,14 +216,12 @@ struct ibv_qp *pvrdma_create_qp(struct ibv_pd *pd,
int ret;
int is_srq = !!(attr->srq);
- attr->cap.max_send_sge =
- align_next_power2(max_t(uint32_t, 1U, attr->cap.max_send_sge));
+ attr->cap.max_send_sge = max_t(uint32_t, 1U, attr->cap.max_send_sge);
attr->cap.max_send_wr =
align_next_power2(max_t(uint32_t, 1U, attr->cap.max_send_wr));
if (!is_srq) {
- attr->cap.max_recv_sge =
- align_next_power2(max_t(uint32_t, 1U, attr->cap.max_recv_sge));
+ attr->cap.max_recv_sge = max_t(uint32_t, 1U, attr->cap.max_recv_sge);
attr->cap.max_recv_wr =
align_next_power2(max_t(uint32_t, 1U, attr->cap.max_recv_wr));
} else {
--
2.7.4
--
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next reply other threads:[~2018-02-16 0:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-16 0:39 Adit Ranadive [this message]
[not found] ` <1518741592-12723-1-git-send-email-aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
2018-02-16 7:22 ` [PATCH] vmw_pvrdma: Avoid rounding up of sge count to power of 2 Leon Romanovsky
[not found] ` <20180216072216.GK2197-U/DQcQFIOTAAJjI8aNfphQ@public.gmane.org>
2018-02-16 18:27 ` Adit Ranadive
2018-02-16 16:15 ` Jason Gunthorpe
[not found] ` <20180216161526.GC22739-uk2M96/98Pc@public.gmane.org>
2018-02-16 17:18 ` Leon Romanovsky
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