diff options
| author | Etienne AUJAMES <eaujames@ddn.com> | 2025-12-31 16:07:45 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-01-04 17:07:22 +0300 |
| commit | ddd6c8c873e912cb1ead79def54de5e24ff71c80 (patch) | |
| tree | e99b43b8713963799aea768b47bbe64eb7764129 | |
| parent | 8818ffb04bfa168dfe5056cd24cee5211dcc4b3c (diff) | |
| download | linux-ddd6c8c873e912cb1ead79def54de5e24ff71c80.tar.xz | |
IB/cache: update gid cache on client reregister event
Some HCAs (e.g: ConnectX4) do not trigger a IB_EVENT_GID_CHANGE on
subnet prefix update from SM (PortInfo).
Since the commit d58c23c92548 ("IB/core: Only update PKEY and GID caches
on respective events"), the GID cache is updated exclusively on
IB_EVENT_GID_CHANGE. If this event is not emitted, the subnet prefix in the
IPoIB interface’s hardware address remains set to its default value
(0xfe80000000000000).
Then rdma_bind_addr() failed because it relies on hardware address to
find the port GID (subnet_prefix + port GUID).
This patch fixes this issue by updating the GID cache on
IB_EVENT_CLIENT_REREGISTER event (emitted on PortInfo::ClientReregister=1).
Fixes: d58c23c92548 ("IB/core: Only update PKEY and GID caches on respective events")
Signed-off-by: Etienne AUJAMES <eaujames@ddn.com>
Link: https://patch.msgid.link/aVUfsO58QIDn5bGX@eaujamesFR0130
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/core/cache.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 81cf3c902e81..0fc1c5bce2f0 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1537,7 +1537,8 @@ static void ib_cache_event_task(struct work_struct *_work) * the cache. */ ret = ib_cache_update(work->event.device, work->event.element.port_num, - work->event.event == IB_EVENT_GID_CHANGE, + work->event.event == IB_EVENT_GID_CHANGE || + work->event.event == IB_EVENT_CLIENT_REREGISTER, work->event.event == IB_EVENT_PKEY_CHANGE, work->enforce_security); |