Commit 0ebea8f9 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

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: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220222031115.4005060-1-eric.dumazet@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f64ae40d

net/ipv6/tcp_ipv6.c

+2 −3
Original line number Diff line number Diff line
@@ -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);