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.
Showing the changes to include/uapi/linux (1 of 4 files). Show all
Unified · Split
| @@ -271,6 +271,7 @@ enum ovs_key_attr { · 270 unmodified lines | ||
| 271 | 271 | OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ |
| 272 | 272 | OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */ |
| 273 | 273 | OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */ |
| 274 | + OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */ | |
| 274 | 275 | |
| 275 | 276 | #ifdef __KERNEL__ |
| 276 | 277 | OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */ |