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/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 679b804..706fc59 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -636,17 +636,17 @@
}
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- struct skb_frag_struct *frag =
+ const struct skb_frag_struct *frag =
&skb_shinfo(skb)->frags[i];
busaddr = skb_frag_dma_map(dev, frag, 0,
- frag->size, DMA_TO_DEVICE);
+ skb_frag_size(frag), DMA_TO_DEVICE);
if (dma_mapping_error(dev, busaddr))
goto dma_err;
wrb = queue_head_node(txq);
- wrb_fill(wrb, busaddr, frag->size);
+ wrb_fill(wrb, busaddr, skb_frag_size(frag));
be_dws_cpu_to_le(wrb, sizeof(*wrb));
queue_head_inc(txq);
- copied += frag->size;
+ copied += skb_frag_size(frag);
}
if (dummy_wrb) {
@@ -1069,7 +1069,7 @@
skb_frag_set_page(skb, 0, page_info->page);
skb_shinfo(skb)->frags[0].page_offset =
page_info->page_offset + hdr_len;
- skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
+ skb_frag_size_set(&skb_shinfo(skb)->frags[0], curr_frag_len - hdr_len);
skb->data_len = curr_frag_len - hdr_len;
skb->truesize += rx_frag_size;
skb->tail += hdr_len;
@@ -1095,13 +1095,13 @@
skb_frag_set_page(skb, j, page_info->page);
skb_shinfo(skb)->frags[j].page_offset =
page_info->page_offset;
- skb_shinfo(skb)->frags[j].size = 0;
+ skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
skb_shinfo(skb)->nr_frags++;
} else {
put_page(page_info->page);
}
- skb_shinfo(skb)->frags[j].size += curr_frag_len;
+ skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
skb->len += curr_frag_len;
skb->data_len += curr_frag_len;
skb->truesize += rx_frag_size;
@@ -1176,11 +1176,11 @@
skb_frag_set_page(skb, j, page_info->page);
skb_shinfo(skb)->frags[j].page_offset =
page_info->page_offset;
- skb_shinfo(skb)->frags[j].size = 0;
+ skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
} else {
put_page(page_info->page);
}
- skb_shinfo(skb)->frags[j].size += curr_frag_len;
+ skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
skb->truesize += rx_frag_size;
remaining -= curr_frag_len;
index_inc(&rxcp->rxq_idx, rxq->len);