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Add connection tracking mark support.

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This patch adds a new 32-bit metadata field to the connection tracking
interface. When a mark is specified as part of the ct action and the
connection is committed, the value is saved with the current connection.
Subsequent ct lookups with the table specified will expose this metadata
as the "ct_mark" field in the flow.

For example, to allow new TCP connections from port 1->2 and only allow
established connections from port 2->1, and to associate a mark with those
connections:

    table=0,priority=1,action=drop
    table=0,arp,action=normal
    table=0,in_port=1,tcp,action=ct(commit,exec(set_field:1->ct_mark)),2
    table=0,in_port=2,ct_state=-trk,tcp,action=ct(table=1)
    table=1,in_port=2,ct_state=+trk,ct_mark=1,tcp,action=1

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Joe Stringer
2015-09-18 13:58:00 -07:00
parent 07659514c3
commit 8e53fe8cf7
30 changed files with 550 additions and 43 deletions
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2
lib/odp-execute.c
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@@ -328,6 +328,7 @@ odp_execute_set_action(struct dp_packet *packet, const struct nlattr *a)
case OVS_KEY_ATTR_TCP_FLAGS:
case OVS_KEY_ATTR_CT_STATE:
case OVS_KEY_ATTR_CT_ZONE:
case OVS_KEY_ATTR_CT_MARK:
case __OVS_KEY_ATTR_MAX:
default:
OVS_NOT_REACHED();
@@ -418,6 +419,7 @@ odp_execute_masked_set_action(struct dp_packet *packet,
case OVS_KEY_ATTR_UNSPEC:
case OVS_KEY_ATTR_CT_STATE:
case OVS_KEY_ATTR_CT_ZONE:
case OVS_KEY_ATTR_CT_MARK:
case OVS_KEY_ATTR_ENCAP:
case OVS_KEY_ATTR_ETHERTYPE:
case OVS_KEY_ATTR_IN_PORT: