ipv6: exthdrs: Reload hdr only when needed in ipv6_srh_rcv().

We need not reload hdr in ipv6_srh_rcv() unless we call
pskb_expand_head().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index e62e26ac99ef1eadb54fbdb7bbfe0476713ff368..dd23531387e3fd0f471638ba0ba655255298e1c9 100644 (file)
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -440,9 +440,9 @@ looped_back:
                        kfree_skb(skb);
                        return -1;
                }
-       }
 
-       hdr = (struct ipv6_sr_hdr *)skb_transport_header(skb);
+               hdr = (struct ipv6_sr_hdr *)skb_transport_header(skb);
+       }
 
        hdr->segments_left--;
        addr = hdr->segments + hdr->segments_left;