From: Ilya Nelkenbaum <[email protected]>
When marsheling a user path to the kernel struct ib_sa_path, need
to zero smac, dmac and set the vlan id to the "no vlan" value.
This is to ensure that Ethernet attributes are not used with
InfiniBand QPs.
Fixes: dd5f03beb4f7 ("IB/core: Ethernet L2 attributes in verbs/cm structures")
Signed-off-by: Ilya Nelkenbaum <[email protected]>
Signed-off-by: Or Gerlitz <[email protected]>
---
FYI Sean, an easy way to reproduce the bug (and test the fix..) is have
ibacm running plus librdmacm instance which uses it (the default in
latest releases) and use rstream with gids, e.g
$ rstream -s fe80::f452:1403:1:da81 -f gid
drivers/infiniband/core/ucma.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 56a4b7c..45d67e9 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1124,6 +1124,9 @@ static int ucma_set_ib_path(struct ucma_context *ctx,
if (!optlen)
return -EINVAL;
+ memset(&sa_path, 0, sizeof(sa_path));
+ sa_path.vlan_id = 0xffff;
+
ib_sa_unpack_path(path_data->path_rec, &sa_path);
ret = rdma_set_ib_paths(ctx->cm_id, &sa_path, 1);
if (ret)
--
1.7.1
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