From 0ebea8f9b81cc02bbef2ec720a4c19e841c03217 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 21 Feb 2022 19:11:15 -0800 Subject: [PATCH] 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 Reviewed-by: David Ahern Link: https://lore.kernel.org/r/20220222031115.4005060-1-eric.dumazet@gmail.com Signed-off-by: Jakub Kicinski --- net/ipv6/tcp_ipv6.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 91cee80..749de85 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -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); -- 2.7.4