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netdev-offload-tc: Check for valid netdev ifindex in flow_put.

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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 <echaudro@redhat.com>
Acked-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Eelco Chaudron
2022-02-22 16:23:06 +01:00
committed by Ilya Maximets
parent b4868ee163
commit db40eb79ec
1 changed files with 18 additions and 0 deletions
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18
lib/netdev-offload-tc.c
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@@ -1837,7 +1837,25 @@ netdev_tc_flow_put(struct netdev *netdev, struct match *match,
VLOG_DBG_RL(&rl, "Can't find netdev for output port %d", port);
return ENODEV;
}
if (!netdev_flow_api_equals(netdev, outdev)) {
VLOG_DBG_RL(&rl,
"Flow API provider mismatch between ingress (%s) "
"and egress (%s) ports",
netdev_get_name(netdev), netdev_get_name(outdev));
netdev_close(outdev);
return EOPNOTSUPP;
}
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);
netdev_close(outdev);
return -action->out.ifindex_out;
}
action->out.ingress = is_internal_port(netdev_get_type(outdev));
action->type = TC_ACT_OUTPUT;
flower.action_count++;