github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-28 17:13:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

IB/cache: update gid cache on client reregister event

Browse Source 
Some HCAs (e.g: ConnectX4) do not trigger a IB_EVENT_GID_CHANGE on
subnet prefix update from SM (PortInfo).

Since the commit d58c23c925 ("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: d58c23c925 ("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>
This commit is contained in:
Etienne AUJAMES 2025-12-31 14:07:45 +01:00 committed by Leon Romanovsky
parent 8818ffb04b
commit ddd6c8c873
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/core/cache.c
View File

@ -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);