From: Jiri Pirko <jiri@resnulli.us>
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,
yanjun.zhu@linux.dev, cui.tao@linux.dev
Subject: [PATCH rdma-next v2 13/14] RDMA/rxe: Implement disassociate_ucontext callback
Date: Tue, 14 Jul 2026 16:29:26 +0200 [thread overview]
Message-ID: <20260714142927.1298897-14-jiri@resnulli.us> (raw)
In-Reply-To: <20260714142927.1298897-1-jiri@resnulli.us>
From: Jiri Pirko <jiri@nvidia.com>
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 <jiri@nvidia.com>
---
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
next prev parent reply other threads:[~2026-07-14 14:30 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-14 14:29 [PATCH rdma-next v2 00/14] RDMA: Make device names unique per net namespace Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 01/14] RDMA/core: Pass the net namespace to the device name lookups Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 02/14] RDMA/core: Handle device name conflicts when changing net namespace Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 03/14] RDMA/core: Support renaming a device when changing its " Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 04/14] RDMA/nldev: Report net namespace move errors through extack Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 05/14] RDMA/nldev: Allow setting the device name while changing net namespace Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 06/14] net/smc: Look up the pnetid ib device within the " Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 07/14] RDMA/srp: Make the SRP sysfs class net namespace aware Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 08/14] RDMA/cgroup: Disambiguate devices across net namespaces Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 09/14] RDMA/cma: Document that CM configfs cannot be net namespace scoped Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 10/14] RDMA/core: Document the SELinux ibendport net namespace limitation Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 11/14] RDMA/core: Make device names unique per net namespace Jiri Pirko
2026-07-14 14:29 ` [PATCH rdma-next v2 12/14] RDMA/rxe: Allow queue VMAs to outlive ucontexts Jiri Pirko
2026-07-14 14:29 ` Jiri Pirko [this message]
2026-07-14 14:29 ` [PATCH rdma-next v2 14/14] RDMA/selftests: Add rxe_netns_names test Jiri Pirko
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