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From: Selvin Xavier <selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	Naga Irrinki
	<naga.irrinki-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>,
	Selvin Xavier
	<selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
Subject: [PATCH V2 for-4.1 8/9] RDMA/ocrdma: Fail connection for MTU lesser than 512
Date: Tue, 19 May 2015 11:32:39 +0530	[thread overview]
Message-ID: <1432015360-15447-9-git-send-email-selvin.xavier@avagotech.com> (raw)
In-Reply-To: <1432015360-15447-1-git-send-email-selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>

From: Naga Irrinki <naga.irrinki-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>

HW currently restricts the IB MTU range between 512 and 4096.
Fail connection for MTUs lesser than 512.

Signed-off-by: Naga Irrinki <naga.irrinki-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
Signed-off-by: Selvin Xavier <selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
---
 drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index ac7347a..47615ff 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -2534,8 +2534,10 @@ static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
 		cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
 	}
 	if (attr_mask & IB_QP_PATH_MTU) {
-		if (attrs->path_mtu < IB_MTU_256 ||
+		if (attrs->path_mtu < IB_MTU_512 ||
 		    attrs->path_mtu > IB_MTU_4096) {
+			pr_err("ocrdma%d: IB MTU %d is not supported\n",
+			       dev->id, ib_mtu_enum_to_int(attrs->path_mtu));
 			status = -EINVAL;
 			goto pmtu_err;
 		}
-- 
2.2.0

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  parent reply	other threads:[~2015-05-19  6:02 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-19  6:02 [PATCH V2 for-4.1 0/9] ocrdma bug fixes Selvin Xavier
     [not found] ` <1432015360-15447-1-git-send-email-selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
2015-05-19  6:02   ` [PATCH V2 for-4.1 1/9] RDMA/ocrdma: Fix EQ destroy failure during driver unload Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 2/9] RDMA/ocrdma: Report EQ full fatal error Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 3/9] RDMA/ocrdma: Fix QP state transition in destroy_qp Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 4/9] RDMA/ocrdma: Use VID 0 if PFC is enabled and vlan is not configured Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 5/9] RDMA/ocrdma: Fix the request length for RDMA_QUERY_QP mailbox command to FW Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 6/9] RDMA/ocrdma: Prevent allocation of DPP PDs if FW doesnt support it Selvin Xavier
2015-05-19  6:02   ` [PATCH V2 for-4.1 7/9] RDMA/ocrdma: Fix dmac resolution for link local address Selvin Xavier
2015-05-19  6:02   ` Selvin Xavier [this message]
2015-05-19  6:02   ` [PATCH V2 for-4.1 9/9] RDMA/ocrdma: Update ocrdma version number Selvin Xavier

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