RDMA/nldev: Fix failure to send large messages

[ Upstream commit fc8f93ad3e5485d45c992233c96acd902992dfc4 ]

Return "-EMSGSIZE" instead of "-EINVAL" when filling a QP entry, so that
new SKBs will be allocated if there's not enough room in current SKB.

Fixes: 65959522f806 ("RDMA: Add support to dump resource tracker in RAW format")
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Link: https://lore.kernel.org/r/b5e9c62f6b8369acab5648b661bf539cbceeffdc.1669636336.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index cefe12964f3eb7970fd53808452bb1fac0f71699..7ad3ba7d5a0a16455bf8f4c0f987129bc4a04fdc 100644 (file)
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -511,7 +511,7 @@ static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin,
 
        /* In create_qp() port is not set yet */
        if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port))
-               return -EINVAL;
+               return -EMSGSIZE;
 
        ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num);
        if (ret)