On 2022-01-31 12:34 PM, Eelco Chaudron wrote:
Verify that the returned ifindex by netdev_get_ifindex() is valid.
This might not be the case in the ERSPAN port scenario, which can
not be offloaded.

Signed-off-by: Eelco Chaudron <[email protected]>
---
  lib/netdev-offload-tc.c |    9 +++++++++
  1 file changed, 9 insertions(+)

diff --git a/lib/netdev-offload-tc.c b/lib/netdev-offload-tc.c
index 9845e8d3f..8135441c6 100644
--- a/lib/netdev-offload-tc.c
+++ b/lib/netdev-offload-tc.c
@@ -1842,6 +1842,15 @@ netdev_tc_flow_put(struct netdev *netdev, struct match 
*match,
                  return ENODEV;
              }
              action->out.ifindex_out = netdev_get_ifindex(outdev);
+
+            if (action->out.ifindex_out < 0) {
+                VLOG_DBG_RL(&rl,
+                            "Can't find ifindex for output port %s, error %d",
+                            netdev_get_name(outdev), action->out.ifindex_out);
+
+                return -action->out.ifindex_out;
+            }
+
              action->out.ingress = is_internal_port(netdev_get_type(outdev));
              action->type = TC_ACT_OUTPUT;
              flower.action_count++;


Acked-by: Roi Dayan <[email protected]>
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