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RDMA/rxe: Implement disassociate_ucontext callback

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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>
Link: https://patch.msgid.link/20260716132316.1495242-14-jiri@resnulli.us
Reviewed-by: Yanjun Zhu <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Jiri Pirko 2026-07-16 15:23:14 +02:00 committed by Leon Romanovsky
parent 22fe73aef3
commit acf9cbb06f
1 changed files with 5 additions and 0 deletions
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5
drivers/infiniband/sw/rxe/rxe_verbs.c
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@ -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,