ipv6: exthdrs: Replace pskb_pull() with skb_pull() in ipv6_srh_rcv().

ipv6_rthdr_rcv() pulls these data

  - Segment Routing Header : 8
  - Hdr Ext Len            : skb_transport_header(skb)[1] << 3

needed by ipv6_srh_rcv(), so pskb_pull() in ipv6_srh_rcv() never
fails and can be replaced with skb_pull().

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 6259e907f0d9f06748432ec0f349cde3277fc94e..e62e26ac99ef1eadb54fbdb7bbfe0476713ff368 100644 (file)
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -402,11 +402,7 @@ looped_back:
 
                        skb_postpull_rcsum(skb, skb_network_header(skb),
                                           skb_network_header_len(skb));
-
-                       if (!pskb_pull(skb, offset)) {
-                               kfree_skb(skb);
-                               return -1;
-                       }
+                       skb_pull(skb, offset);
                        skb_postpull_rcsum(skb, skb_transport_header(skb),
                                           offset);