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TCP flags matching support.

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tcp_flags=flags/mask
        Bitwise  match on TCP flags.  The flags and mask are 16-bit num‐
        bers written in decimal or in hexadecimal prefixed by 0x.   Each
        1-bit  in  mask requires that the corresponding bit in port must
        match.  Each 0-bit in mask causes the corresponding  bit  to  be
        ignored.

        TCP  protocol  currently  defines  9 flag bits, and additional 3
        bits are reserved (must be transmitted as zero), see  RFCs  793,
        3168, and 3540.  The flag bits are, numbering from the least
	significant bit:

        0: FIN No more data from sender.

        1: SYN Synchronize sequence numbers.

        2: RST Reset the connection.

        3: PSH Push function.

        4: ACK Acknowledgement field significant.

        5: URG Urgent pointer field significant.

        6: ECE ECN Echo.

        7: CWR Congestion Windows Reduced.

        8: NS  Nonce Sum.

        9-11:  Reserved.

        12-15: Not matchable, must be zero.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Jarno Rajahalme
2013-10-28 13:54:40 -07:00
committed by Ben Pfaff
parent a66733a8bc
commit dc235f7fbc
20 changed files with 315 additions and 55 deletions
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1
lib/odp-execute.c
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@@ -131,6 +131,7 @@ odp_execute_set_action(struct ofpbuf *packet, const struct nlattr *a,
case OVS_KEY_ATTR_ICMP:
case OVS_KEY_ATTR_ICMPV6:
case OVS_KEY_ATTR_ND:
case OVS_KEY_ATTR_TCP_FLAGS:
case __OVS_KEY_ATTR_MAX:
default:
NOT_REACHED();