From: Etienne AUJAMES Date: Wed, 31 Dec 2025 13:07:45 +0000 (+0100) Subject: IB/cache: update gid cache on client reregister event X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddd6c8c873e912cb1ead79def54de5e24ff71c80;p=thirdparty%2Fkernel%2Flinux.git 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 Link: https://patch.msgid.link/aVUfsO58QIDn5bGX@eaujamesFR0130 Reviewed-by: Parav Pandit Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 81cf3c902e819..0fc1c5bce2f0d 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);