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From: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Jason Gunthorpe <jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	RDMA mailing list
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Mark Bloch <markb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Parav Pandit <parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: [PATCH rdma-next 6/6] RDMA/cma: Fix returning correct path record entry for RoCE
Date: Mon,  8 Jan 2018 17:04:48 +0200	[thread overview]
Message-ID: <20180108150448.29069-7-leon@kernel.org> (raw)
In-Reply-To: <20180108150448.29069-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>

From: Parav Pandit <parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

There are 4 types of path records IB, OPA, RoCEv1, RoCEv2.
Recent change only considered two path records - IB and OPA.
This results into converting RoCE path records as OPA and returning
garbage data in path record entry.
This incorrect decoding broke applications using RoCE transport.
IB, RoCEv1 and RoCEv2 are identical path records to user.
This patch avoids decoding RoCE(v1,v2) path record as OPA path record.

Fixes: 57520751445b ("IB/SA: Add OPA path record type")
Signed-off-by: Parav Pandit <parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Mark Bloch <markb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 drivers/infiniband/core/ucma.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 7b25226b608e..29a81e6cfc96 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -904,13 +904,14 @@ static ssize_t ucma_query_path(struct ucma_context *ctx,
 
 		resp->path_data[i].flags = IB_PATH_GMP | IB_PATH_PRIMARY |
 					   IB_PATH_BIDIRECTIONAL;
-		if (rec->rec_type == SA_PATH_REC_TYPE_IB) {
-			ib_sa_pack_path(rec, &resp->path_data[i].path_rec);
-		} else {
+		if (rec->rec_type == SA_PATH_REC_TYPE_OPA) {
 			struct sa_path_rec ib;
 
 			sa_convert_path_opa_to_ib(&ib, rec);
 			ib_sa_pack_path(&ib, &resp->path_data[i].path_rec);
+
+		} else {
+			ib_sa_pack_path(rec, &resp->path_data[i].path_rec);
 		}
 	}
 
-- 
2.15.1

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  parent reply	other threads:[~2018-01-08 15:04 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-08 15:04 [PATCH rdma-next 0/6] RoCE Path Record refactoring Leon Romanovsky
     [not found] ` <20180108150448.29069-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2018-01-08 15:04   ` [PATCH rdma-next 1/6] RDMA/cma: Use the net namespace of the rdma_cm_id Leon Romanovsky
     [not found]     ` <20180108150448.29069-2-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2018-01-19  8:38       ` Knut Omang
2018-01-08 15:04   ` [PATCH rdma-next 2/6] RDMA/cma: Provide function to set RoCE path record L2 parameters Leon Romanovsky
2018-01-08 15:04   ` [PATCH rdma-next 3/6] RDMA/{cma, ucma}: Simplify and rename rdma_set_ib_paths Leon Romanovsky
2018-01-08 15:04   ` [PATCH rdma-next 4/6] RDMA/{cma, ucma}: Refactor to have transport specific checks Leon Romanovsky
     [not found]     ` <20180108150448.29069-5-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2018-01-10 23:37       ` Jason Gunthorpe
     [not found]         ` <20180110233748.GS4518-uk2M96/98Pc@public.gmane.org>
2018-01-11  0:55           ` Parav Pandit
2018-01-11  6:05           ` Leon Romanovsky
     [not found]             ` <20180111060537.GO7368-U/DQcQFIOTAAJjI8aNfphQ@public.gmane.org>
2018-01-11 16:56               ` Jason Gunthorpe
     [not found]                 ` <20180111165622.GB1309-uk2M96/98Pc@public.gmane.org>
2018-01-11 18:50                   ` Leon Romanovsky
     [not found]                     ` <20180111185004.GD15760-U/DQcQFIOTAAJjI8aNfphQ@public.gmane.org>
2018-01-11 18:53                       ` Jason Gunthorpe
2018-01-08 15:04   ` [PATCH rdma-next 5/6] RDMA/cma: Fix setting RoCE specific path record fields Leon Romanovsky
     [not found]     ` <20180108150448.29069-6-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2018-01-11  5:04       ` Jason Gunthorpe
     [not found]         ` <20180111050453.GB16668-uk2M96/98Pc@public.gmane.org>
2018-01-11 13:57           ` Parav Pandit
2018-01-08 15:04   ` Leon Romanovsky [this message]
2018-01-11  0:20   ` [PATCH rdma-next 0/6] RoCE Path Record refactoring Jason Gunthorpe

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