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| author | Jarno Rajahalme <jrajahalme@nicira.com> | 2013-10-28 13:54:40 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2013-10-29 09:43:59 -0700 |
| commit | dc235f7fbcff39b318b715f9d3d01f97b2634357 (patch) | |
| tree | 856bf86db33b7c71a8dcdeb7baa457a806d4d8ba /include/linux | |
| parent | a66733a8bc1c42d92f498108d7e27987989dc206 (diff) | |
| download | openvswitch-dc235f7fbcff39b318b715f9d3d01f97b2634357.tar.gz | |
TCP flags matching support.
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/openvswitch.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/openvswitch.h b/include/linux/openvswitch.h index f46d9d033..b429201cc 100644 --- a/include/linux/openvswitch.h +++ b/include/linux/openvswitch.h @@ -294,6 +294,7 @@ enum ovs_key_attr { OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ + OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ #ifdef __KERNEL__ OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */ |