diff options
| author | Ilpo Järvinen <ij@kernel.org> | 2025-03-06 01:38:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2025-03-17 16:49:46 +0300 |
| commit | 2c2f08d31d2f6cd5621b121d596986bd54da679a (patch) | |
| tree | 803a211285674212fc028eeca1fa1b027058d15c /include/uapi/linux/tcp.h | |
| parent | 0114a91da67263c56612ff19a6aa0992466e7756 (diff) | |
| download | linux-2c2f08d31d2f6cd5621b121d596986bd54da679a.tar.xz | |
tcp: extend TCP flags to allow AE bit/ACE field
With AccECN, there's one additional TCP flag to be used (AE)
and ACE field that overloads the definition of AE, CWR, and
ECE flags. As tcp_flags was previously only 1 byte, the
byte-order stuff needs to be added to it's handling.
Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/tcp.h')
| -rw-r--r-- | include/uapi/linux/tcp.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 32a27b4a5020..92a2e79222ea 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -28,7 +28,8 @@ struct tcphdr { __be32 seq; __be32 ack_seq; #if defined(__LITTLE_ENDIAN_BITFIELD) - __u16 res1:4, + __u16 ae:1, + res1:3, doff:4, fin:1, syn:1, @@ -40,7 +41,8 @@ struct tcphdr { cwr:1; #elif defined(__BIG_ENDIAN_BITFIELD) __u16 doff:4, - res1:4, + res1:3, + ae:1, cwr:1, ece:1, urg:1, @@ -70,6 +72,7 @@ union tcp_word_hdr { #define tcp_flag_word(tp) (((union tcp_word_hdr *)(tp))->words[3]) enum { + TCP_FLAG_AE = __constant_cpu_to_be32(0x01000000), TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000), TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000), TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000), @@ -78,7 +81,7 @@ enum { TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000), TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000), TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000), - TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000), + TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0E000000), TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000) }; |