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ipv6: tcp: consistently use MAX_TCP_HEADER 

All other skbs allocated for TCP tx are using MAX_TCP_HEADER already.

MAX_HEADER can be too small for some cases (like eBPF based encapsulation),
so this can avoid extra pskb_expand_head() in lower stacks.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220222031115.4005060-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2022-02-21 19:11:15 -08:00 committed by Jakub Kicinski
parent f64ae40de5
commit 0ebea8f9b8
1 changed files with 2 additions and 3 deletions
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5
net/ipv6/tcp_ipv6.c
View File

@ -925,12 +925,11 @@ static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32
}
#endif
buff = alloc_skb(MAX_HEADER + sizeof(struct ipv6hdr) + tot_len,
GFP_ATOMIC);
buff = alloc_skb(MAX_TCP_HEADER, GFP_ATOMIC);
if (!buff)
return;
skb_reserve(buff, MAX_HEADER + sizeof(struct ipv6hdr) + tot_len);
skb_reserve(buff, MAX_TCP_HEADER);
t1 = skb_push(buff, tot_len);
skb_reset_transport_header(buff);