Commit b5b1b676 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

ipv6: use __skb_push() in ip6_xmit() 



ip6_xmit() makes sure there is enough headroom in the skb,
it can uses __skb_push() instead of the out-of-line skb_push().

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260130210303.3888261-4-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 2855e492

net/ipv6/ip6_output.c

+2 −2
Original line number Diff line number Diff line
@@ -314,7 +314,7 @@ int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, 
	}



	if (unlikely(seg_len > IPV6_MAXPLEN)) {

		hop_jumbo = skb_push(skb, hoplen);

		hop_jumbo = __skb_push(skb, hoplen);



		hop_jumbo->nexthdr = proto;

		hop_jumbo->hdrlen = 0;
@@ -327,7 +327,7 @@ int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, 
		IP6CB(skb)->flags |= IP6SKB_FAKEJUMBO;

	}



	skb_push(skb, sizeof(struct ipv6hdr));

	__skb_push(skb, sizeof(struct ipv6hdr));

	skb_reset_network_header(skb);

	hdr = ipv6_hdr(skb);