net: add skb frag size accessors

To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.

Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 7b954e2539d0..cc22099ac8b6 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -464,8 +464,8 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
                 head->next = clone;
                 skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
                 skb_frag_list_init(head);
-                for (i=0; i<skb_shinfo(head)->nr_frags; i++)
-                        plen += skb_shinfo(head)->frags[i].size;
+                for (i = 0; i < skb_shinfo(head)->nr_frags; i++)
+                        plen += skb_frag_size(&skb_shinfo(head)->frags[i]);
                 clone->len = clone->data_len = head->data_len - plen;
                 head->data_len -= clone->len;
                 head->len -= clone->len;