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authorSamuel Ortiz <sameo@linux.intel.com>2013-01-11 14:48:48 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2013-01-11 14:56:22 +0100
commitfad2e371bb5a9f64dced90309fa7cb8bce09e92f (patch)
tree8ddf587099423147e42edbe30c77ad8ca92a52df /net/nfc
parent1353a10c474d1c6895051d33eefeb93542015008 (diff)
downloadlinux-fad2e371bb5a9f64dced90309fa7cb8bce09e92f.tar.gz
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>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/llcp/sock.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 12ec4879b4b..463231bed8d 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -682,17 +682,17 @@ static int llcp_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
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;
- pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
+ msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
- sockaddr.sa_family = AF_NFC;
- sockaddr.nfc_protocol = NFC_PROTO_NFC_DEP;
- sockaddr.dsap = ui_cb->dsap;
- sockaddr.ssap = ui_cb->ssap;
+ pr_debug("Datagram socket %d %d\n", ui_cb->dsap, 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 */