diff options
| author | Eric Dumazet <edumazet@google.com> | 2026-02-23 10:07:29 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-24 17:16:09 -0800 |
| commit | fcd3d039fab693df3d41ac9bcb12fb4e8ddd69fe (patch) | |
| tree | 2823acb3b64d0ba0e3de6b18c0077fef9c0a729e /net/mptcp | |
| parent | 255688652b8c439eb35c68ec5cdac4aa63737d35 (diff) | |
tcp: make tcp_v{4,6}_send_check() static
tcp_v{4,6}_send_check() are only called from tcp_output.c
and should be made static so that the compiler does not need
to put an out of line copy of them.
Remove (struct inet_connection_sock_af_ops) send_check field
and use instead @net_header_len.
Move @net_header_len close to @queue_xmit for data locality
as both are used in TCP tx fast path.
$ scripts/bloat-o-meter -t vmlinux.2 vmlinux.3
add/remove: 0/2 grow/shrink: 0/3 up/down: 0/-172 (-172)
Function old new delta
__tcp_transmit_skb 3426 3423 -3
tcp_v4_send_check 136 132 -4
mptcp_subflow_init 777 763 -14
__pfx_tcp_v6_send_check 16 - -16
tcp_v6_send_check 135 - -135
Total: Before=25143196, After=25143024, chg -0.00%
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260223100729.3761597-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/subflow.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index f66129f1e649..dd79c5b37a6b 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -2190,7 +2190,6 @@ void __init mptcp_subflow_init(void) subflow_v6m_specific = subflow_v6_specific; subflow_v6m_specific.queue_xmit = ipv4_specific.queue_xmit; - subflow_v6m_specific.send_check = ipv4_specific.send_check; subflow_v6m_specific.net_header_len = ipv4_specific.net_header_len; subflow_v6m_specific.mtu_reduced = ipv4_specific.mtu_reduced; subflow_v6m_specific.rebuild_header = subflow_rebuild_header; |