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tcp: move tcp_v6_send_check() to tcp_output.c

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Move tcp_v6_send_check() so that __tcp_transmit_skb() can inline it.

$ scripts/bloat-o-meter -t vmlinux.1 vmlinux.2
add/remove: 0/0 grow/shrink: 1/0 up/down: 105/0 (105)
Function                                     old     new   delta
__tcp_transmit_skb                          3321    3426    +105
Total: Before=25143091, After=25143196, chg +0.00%

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260223100729.3761597-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet
2026-02-24 17:16:09 -08:00
committed by Jakub Kicinski
parent bd5e5e1d41
commit 255688652b
3 changed files with 18 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/net/tcp.h
+2 -1
View File
@@ -1132,7 +1132,8 @@ static inline int tcp_v6_sdif(const struct sk_buff *skb)
extern const struct inet_connection_sock_af_ops ipv6_specific;
INDIRECT_CALLABLE_DECLARE(void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb));
void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb);
INDIRECT_CALLABLE_DECLARE(int tcp_v6_rcv(struct sk_buff *skb));
void tcp_v6_early_demux(struct sk_buff *skb);
net/ipv4/tcp_output.c
+16 -3
View File
@@ -1506,6 +1506,16 @@ void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
}
EXPORT_IPV6_MOD(tcp_v4_send_check);
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ip6_checksum.h>
void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
__tcp_v6_send_check(skb, &sk->sk_v6_rcv_saddr, &sk->sk_v6_daddr);
}
EXPORT_IPV6_MOD(tcp_v6_send_check);
#endif
/* This routine actually transmits TCP packets queued in by
* tcp_do_sendmsg(). This is used by both the initial
* transmission and possible later retransmissions.
@@ -1667,9 +1677,12 @@ static int __tcp_transmit_skb(struct sock *sk, struct sk_buff *skb,
/* BPF prog is the last one writing header option */
bpf_skops_write_hdr_opt(sk, skb, NULL, NULL, 0, &opts);
INDIRECT_CALL_INET(icsk->icsk_af_ops->send_check,
tcp_v6_send_check, tcp_v4_send_check,
sk, skb);
#if IS_ENABLED(CONFIG_IPV6)
if (likely(icsk->icsk_af_ops->send_check == tcp_v6_send_check))
tcp_v6_send_check(sk, skb);
else
#endif
tcp_v4_send_check(sk, skb);
if (likely(tcb->tcp_flags & TCPHDR_ACK))
tcp_event_ack_sent(sk, rcv_nxt);
net/ipv6/tcp_ipv6.c
-5
View File
@@ -2015,11 +2015,6 @@ static struct timewait_sock_ops tcp6_timewait_sock_ops = {
.twsk_obj_size = sizeof(struct tcp6_timewait_sock),
};
INDIRECT_CALLABLE_SCOPE void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
__tcp_v6_send_check(skb, &sk->sk_v6_rcv_saddr, &sk->sk_v6_daddr);
}
const struct inet_connection_sock_af_ops ipv6_specific = {
.queue_xmit = inet6_csk_xmit,
.send_check = tcp_v6_send_check,