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>
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 7b54d72..cf480b5 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -2894,10 +2894,10 @@
}
for (f = 0; f < nr_frags; f++) {
- struct skb_frag_struct *frag;
+ const struct skb_frag_struct *frag;
frag = &skb_shinfo(skb)->frags[f];
- len = frag->size;
+ len = skb_frag_size(frag);
offset = 0;
while (len) {
@@ -3183,7 +3183,7 @@
nr_frags = skb_shinfo(skb)->nr_frags;
for (f = 0; f < nr_frags; f++)
- count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
+ count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
max_txd_pwr);
if (adapter->pcix_82544)
count += nr_frags;