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/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
index d9460d8..fd40988 100644
--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -2051,7 +2051,7 @@
__skb_frag_set_page(frag, page->buffer);
__skb_frag_ref(frag);
frag->page_offset = off;
- frag->size = hlen - swivel;
+ skb_frag_size_set(frag, hlen - swivel);
/* any more data? */
if ((words[0] & RX_COMP1_SPLIT_PKT) && ((dlen -= hlen) > 0)) {
@@ -2075,7 +2075,7 @@
__skb_frag_set_page(frag, page->buffer);
__skb_frag_ref(frag);
frag->page_offset = 0;
- frag->size = hlen;
+ skb_frag_size_set(frag, hlen);
RX_USED_ADD(page, hlen + cp->crc_size);
}
@@ -2826,9 +2826,9 @@
entry = TX_DESC_NEXT(ring, entry);
for (frag = 0; frag < nr_frags; frag++) {
- skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
+ const skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
- len = fragp->size;
+ len = skb_frag_size(fragp);
mapping = skb_frag_dma_map(&cp->pdev->dev, fragp, 0, len,
DMA_TO_DEVICE);
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 23740e8..73c7081 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -3594,7 +3594,7 @@
tb = &rp->tx_buffs[idx];
BUG_ON(tb->skb != NULL);
np->ops->unmap_page(np->device, tb->mapping,
- skb_shinfo(skb)->frags[i].size,
+ skb_frag_size(&skb_shinfo(skb)->frags[i]),
DMA_TO_DEVICE);
idx = NEXT_TX(rp, idx);
}
@@ -6727,9 +6727,9 @@
}
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];
- len = frag->size;
+ len = skb_frag_size(frag);
mapping = np->ops->map_page(np->device, skb_frag_page(frag),
frag->page_offset, len,
DMA_TO_DEVICE);
diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c
index 6b62a73..ceab215 100644
--- a/drivers/net/ethernet/sun/sungem.c
+++ b/drivers/net/ethernet/sun/sungem.c
@@ -1065,12 +1065,12 @@
entry = NEXT_TX(entry);
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+ const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
u32 len;
dma_addr_t mapping;
u64 this_ctrl;
- len = this_frag->size;
+ len = skb_frag_size(this_frag);
mapping = skb_frag_dma_map(&gp->pdev->dev, this_frag,
0, len, DMA_TO_DEVICE);
this_ctrl = ctrl;
diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
index 869d47b..c517dac 100644
--- a/drivers/net/ethernet/sun/sunhme.c
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -2305,10 +2305,10 @@
entry = NEXT_TX(entry);
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+ const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
u32 len, mapping, this_txflags;
- len = this_frag->size;
+ len = skb_frag_size(this_frag);
mapping = skb_frag_dma_map(hp->dma_dev, this_frag,
0, len, DMA_TO_DEVICE);
this_txflags = tx_flags;