diff options
| author | Or Gerlitz <ogerlitz@ddn.com> | 2026-06-17 14:21:05 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-07-02 07:03:46 -0400 |
| commit | 18313833e2c6de222a4f6c072da759d0d5888528 (patch) | |
| tree | 04af62fa2fd1459355527f17a783ee16059af562 | |
| parent | f5ad2ead846e3a00d040d64c7eaf67b65629f51d (diff) | |
RDMA/cma: Fix hardware address comparison length in netevent callback
The cited commit hardcoded the hardware address comparison len to ETH_ALEN.
This breaks IPoIB, which uses 20-byte addresses. By truncating the
memcmp, the CMA may incorrectly assume the target address is
unchanged and fails to abort the stalled connection.
Fix this by replacing ETH_ALEN with the dynamic neigh->dev->addr_len
to correctly evaluate the full address regardless of the link layer.
Fixes: 925d046e7e52 ("RDMA/core: Add a netevent notifier to cma")
Signed-off-by: Or Gerlitz <ogerlitz@ddn.com>
Link: https://patch.msgid.link/20260617-fix-cma-ipoib-v1-1-03f869344304@ddn.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/core/cma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 9480d1a51c11..e88d3efb967b 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -5270,7 +5270,7 @@ static int cma_netevent_callback(struct notifier_block *self, list_for_each_entry(current_id, &ips_node->id_list, id_list_entry) { if (!memcmp(current_id->id.route.addr.dev_addr.dst_dev_addr, - neigh->ha, ETH_ALEN)) + neigh->ha, neigh->dev->addr_len)) continue; cma_id_get(current_id); if (!queue_work(cma_wq, ¤t_id->id.net_work)) |