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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:20 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:37 +0300
commit59ae1d127ac0ae404baf414c434ba2651b793f46 (patch)
tree043e71496aa7a7db86bcc8219a3a51f533aac982 /drivers/net/ethernet/dec
parentb080db585384b9f037e015c0c28d1ad33be41dfc (diff)
downloadlinux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.xz
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/dec')
-rw-r--r--drivers/net/ethernet/dec/tulip/de4x5.c6
-rw-r--r--drivers/net/ethernet/dec/tulip/interrupt.c12
-rw-r--r--drivers/net/ethernet/dec/tulip/uli526x.c6
3 files changed, 12 insertions, 12 deletions
diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
index fd6bcf024729..47be5018d35d 100644
--- a/drivers/net/ethernet/dec/tulip/de4x5.c
+++ b/drivers/net/ethernet/dec/tulip/de4x5.c
@@ -3624,10 +3624,10 @@ de4x5_alloc_rx_buff(struct net_device *dev, int index, int len)
skb_reserve(p, 2); /* Align */
if (index < lp->rx_old) { /* Wrapped buffer */
short tlen = (lp->rxRingSize - lp->rx_old) * RX_BUFF_SZ;
- memcpy(skb_put(p,tlen),lp->rx_bufs + lp->rx_old * RX_BUFF_SZ,tlen);
- memcpy(skb_put(p,len-tlen),lp->rx_bufs,len-tlen);
+ skb_put_data(p, lp->rx_bufs + lp->rx_old * RX_BUFF_SZ, tlen);
+ skb_put_data(p, lp->rx_bufs, len - tlen);
} else { /* Linear buffer */
- memcpy(skb_put(p,len),lp->rx_bufs + lp->rx_old * RX_BUFF_SZ,len);
+ skb_put_data(p, lp->rx_bufs + lp->rx_old * RX_BUFF_SZ, len);
}
return p;
diff --git a/drivers/net/ethernet/dec/tulip/interrupt.c b/drivers/net/ethernet/dec/tulip/interrupt.c
index ba6ae24acf62..8df80880ecaa 100644
--- a/drivers/net/ethernet/dec/tulip/interrupt.c
+++ b/drivers/net/ethernet/dec/tulip/interrupt.c
@@ -218,9 +218,9 @@ int tulip_poll(struct napi_struct *napi, int budget)
pkt_len);
skb_put(skb, pkt_len);
#else
- memcpy(skb_put(skb, pkt_len),
- tp->rx_buffers[entry].skb->data,
- pkt_len);
+ skb_put_data(skb,
+ tp->rx_buffers[entry].skb->data,
+ pkt_len);
#endif
pci_dma_sync_single_for_device(tp->pdev,
tp->rx_buffers[entry].mapping,
@@ -444,9 +444,9 @@ static int tulip_rx(struct net_device *dev)
pkt_len);
skb_put(skb, pkt_len);
#else
- memcpy(skb_put(skb, pkt_len),
- tp->rx_buffers[entry].skb->data,
- pkt_len);
+ skb_put_data(skb,
+ tp->rx_buffers[entry].skb->data,
+ pkt_len);
#endif
pci_dma_sync_single_for_device(tp->pdev,
tp->rx_buffers[entry].mapping,
diff --git a/drivers/net/ethernet/dec/tulip/uli526x.c b/drivers/net/ethernet/dec/tulip/uli526x.c
index 8d98b259d1ba..7fc248efc4ba 100644
--- a/drivers/net/ethernet/dec/tulip/uli526x.c
+++ b/drivers/net/ethernet/dec/tulip/uli526x.c
@@ -864,9 +864,9 @@ static void uli526x_rx_packet(struct net_device *dev, struct uli526x_board_info
skb = new_skb;
/* size less than COPY_SIZE, allocate a rxlen SKB */
skb_reserve(skb, 2); /* 16byte align */
- memcpy(skb_put(skb, rxlen),
- skb_tail_pointer(rxptr->rx_skb_ptr),
- rxlen);
+ skb_put_data(skb,
+ skb_tail_pointer(rxptr->rx_skb_ptr),
+ rxlen);
uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
} else
skb_put(skb, rxlen);