Files
linux/include/net
Eric Dumazet a6eee39cc2 tcp: populate inet->cork.fl.u.ip6 in tcp_v6_syn_recv_sock()
As explained in commit 85d05e2817 ("ipv6: change inet6_sk_rebuild_header()
to use inet->cork.fl.u.ip6"):

TCP v6 spends a good amount of time rebuilding a fresh fl6 at each
transmit in inet6_csk_xmit()/inet6_csk_route_socket().

TCP v4 caches the information in inet->cork.fl.u.ip4 instead.

After this patch, passive TCP ipv6 flows have correctly initialized
inet->cork.fl.u.ip6 structure.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260206173426.1638518-7-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-10 20:57:50 -08:00
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