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When using conntrack helpers from OVS, a common configuration is to
perform a lookup without specifying a helper, then go through a
firewalling policy, only to decide to attach a helper afterwards.
In this case, the initial lookup will cause a ct entry to be attached to
the skb, then the later commit with helper should attach the helper and
confirm the connection. However, the helper attachment has been missing.
If the user has enabled automatic helper attachment, then this issue
will be masked as it will be applied in init_conntrack(). It is also
masked if the action is executed from ovs_packet_cmd_execute() as that
will construct a fresh skb.
This patch fixes the issue by making an explicit call to try to assign
the helper if there is a discrepancy between the action's helper and the
current skb->nfct.
Fixes:
|
||
|---|---|---|
| .. | ||
| actions.c | ||
| conntrack.c | ||
| conntrack.h | ||
| datapath.c | ||
| datapath.h | ||
| dp_notify.c | ||
| flow_netlink.c | ||
| flow_netlink.h | ||
| flow_table.c | ||
| flow_table.h | ||
| flow.c | ||
| flow.h | ||
| Kconfig | ||
| Makefile | ||
| vport-geneve.c | ||
| vport-gre.c | ||
| vport-internal_dev.c | ||
| vport-internal_dev.h | ||
| vport-netdev.c | ||
| vport-netdev.h | ||
| vport-vxlan.c | ||
| vport.c | ||
| vport.h | ||