NFC: Avoid memcpy on LLCP connection less Rx path
We can cast msg_name to a sockaddr_nfc_llcp pointer directly.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 12ec487..463231b 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -682,17 +682,17 @@
if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
- struct sockaddr_nfc_llcp sockaddr;
+ struct sockaddr_nfc_llcp *sockaddr =
+ (struct sockaddr_nfc_llcp *) msg->msg_name;
+
+ msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
- sockaddr.sa_family = AF_NFC;
- sockaddr.nfc_protocol = NFC_PROTO_NFC_DEP;
- sockaddr.dsap = ui_cb->dsap;
- sockaddr.ssap = ui_cb->ssap;
-
- memcpy(msg->msg_name, &sockaddr, sizeof(sockaddr));
- msg->msg_namelen = sizeof(sockaddr);
+ sockaddr->sa_family = AF_NFC;
+ sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP;
+ sockaddr->dsap = ui_cb->dsap;
+ sockaddr->ssap = ui_cb->ssap;
}
/* Mark read part of skb as used */