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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 /net/nfc/nci/hci.c
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 'net/nfc/nci/hci.c')
-rw-r--r--net/nfc/nci/hci.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index a0ab26d535dc..d4a53ce818c3 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -187,7 +187,7 @@ static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
*skb_push(skb, 1) = cb;
if (len > 0)
- memcpy(skb_put(skb, len), data + i, len);
+ skb_put_data(skb, data + i, len);
r = nci_send_data(ndev, conn_info->conn_id, skb);
if (r < 0)
@@ -476,8 +476,9 @@ void nci_hci_data_received_cb(void *context,
skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
- memcpy(skb_put(hcp_skb, msg_len), frag_skb->data +
- NCI_HCI_HCP_PACKET_HEADER_LEN, msg_len);
+ skb_put_data(hcp_skb,
+ frag_skb->data + NCI_HCI_HCP_PACKET_HEADER_LEN,
+ msg_len);
}
skb_queue_purge(&ndev->hci_dev->rx_hcp_frags);