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/alteon/acenic.c b/drivers/net/ethernet/alteon/acenic.c
index b1a4e82..f872748 100644
--- a/drivers/net/ethernet/alteon/acenic.c
+++ b/drivers/net/ethernet/alteon/acenic.c
@@ -2478,18 +2478,18 @@
idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+ const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
struct tx_ring_info *info;
- len += frag->size;
+ len += skb_frag_size(frag);
info = ap->skb->tx_skbuff + idx;
desc = ap->tx_ring + idx;
mapping = skb_frag_dma_map(&ap->pdev->dev, frag, 0,
- frag->size,
+ skb_frag_size(frag),
DMA_TO_DEVICE);
- flagsize = (frag->size << 16);
+ flagsize = skb_frag_size(frag) << 16;
if (skb->ip_summed == CHECKSUM_PARTIAL)
flagsize |= BD_FLG_TCP_UDP_SUM;
idx = (idx + 1) % ACE_TX_RING_ENTRIES(ap);
@@ -2508,7 +2508,7 @@
info->skb = NULL;
}
dma_unmap_addr_set(info, mapping, mapping);
- dma_unmap_len_set(info, maplen, frag->size);
+ dma_unmap_len_set(info, maplen, skb_frag_size(frag));
ace_load_tx_bd(ap, desc, mapping, flagsize, vlan_tag);
}
}