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Thu, 09 Jul 2026 02:56:14 -0700 (PDT) From: Jiri Pirko To: linux-rdma@vger.kernel.org Cc: cgroups@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kselftest@vger.kernel.org, jgg@ziepe.ca, leon@kernel.org, parav@nvidia.com, mbloch@nvidia.com, cmeiohas@nvidia.com, roman.gushchin@linux.dev, bvanassche@acm.org, zyjzyj2000@gmail.com, shuah@kernel.org, tj@kernel.org, mkoutny@suse.com, hannes@cmpxchg.org, alibuda@linux.alibaba.com, dust.li@linux.alibaba.com, sidraya@linux.ibm.com, wenjia@linux.ibm.com Subject: [PATCH rdma-next 12/13] RDMA/rxe: Implement disassociate_ucontext callback Date: Thu, 9 Jul 2026 11:55:31 +0200 Message-ID: <20260709095532.855647-13-jiri@resnulli.us> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260709095532.855647-1-jiri@resnulli.us> References: <20260709095532.855647-1-jiri@resnulli.us> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jiri Pirko Implement an empty disassociate_ucontext() callback so the RDMA core can move rxe devices between net namespaces. The core requires this callback to reset user contexts without waiting for userspace. rxe needs no teardown here: its user-mapped queues live in reference-counted vmalloc memory (see rxe_mmap.c) that stays valid while userspace holds the mappings. Signed-off-by: Jiri Pirko --- drivers/infiniband/sw/rxe/rxe_verbs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index 1ec130fee8ea..6eb10d2f0653 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -240,6 +240,10 @@ static void rxe_dealloc_ucontext(struct ib_ucontext *ibuc) rxe_err_uc(uc, "cleanup failed, err = %d\n", err); } +static void rxe_disassociate_ucontext(struct ib_ucontext *ibuc) +{ +} + /* pd */ static int rxe_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { @@ -1478,6 +1482,7 @@ static const struct ib_device_ops rxe_dev_ops = { .destroy_srq = rxe_destroy_srq, .detach_mcast = rxe_detach_mcast, .device_group = &rxe_attr_group, + .disassociate_ucontext = rxe_disassociate_ucontext, .enable_driver = rxe_enable_driver, .get_dma_mr = rxe_get_dma_mr, .get_hw_stats = rxe_ib_get_hw_stats, -- 2.54.0