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tunneling: Add support for tunnel ID.

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Add a tun_id field which contains the ID of the encapsulating tunnel
on which a packet was received (0 if not received on a tunnel).  Also
add an action which allows the tunnel ID to be set for outgoing
packets.  At this point there aren't any tunnel implementations so
these fields don't have any effect.

The matching is exposed to OpenFlow by overloading the high 32 bits
of the cookie as the tunnel ID.  ovs-ofctl is capable of turning
on this special behavior using a new "tun-cookie" command but this
command is intentially undocumented to avoid it being used without
a full understanding of the consequences.
This commit is contained in:
Jesse Gross
2010-04-12 11:49:16 -04:00
parent db0e2ad101
commit 659586efcf
25 changed files with 275 additions and 86 deletions
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4
lib/dpif-netdev.c
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@@ -932,7 +932,7 @@ dpif_netdev_execute(struct dpif *dpif, uint16_t in_port,
* if we don't. */
copy = *packet;
}
flow_extract(&copy, in_port, &flow);
flow_extract(&copy, 0, in_port, &flow);
error = dp_netdev_execute_actions(dp, &copy, &flow, actions, n_actions);
if (mutates) {
ofpbuf_uninit(&copy);
@@ -1026,7 +1026,7 @@ dp_netdev_port_input(struct dp_netdev *dp, struct dp_netdev_port *port,
struct dp_netdev_flow *flow;
flow_t key;
if (flow_extract(packet, port->port_no, &key) && dp->drop_frags) {
if (flow_extract(packet, 0, port->port_no, &key) && dp->drop_frags) {
dp->n_frags++;
return;
}