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authorAl Viro <viro@zeniv.linux.org.uk>2014-12-15 21:39:31 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-11 15:53:35 -0400
commit01e97e6517053d7c0b9af5248e944a9209909cf5 (patch)
tree30f57eededa62a390543b3a596d81006deb22384 /net
parenta2dd3793a1c3ac709f1d7b48ad7751563f4c654f (diff)
downloadlinux-01e97e6517053d7c0b9af5248e944a9209909cf5.tar.bz2
new helper: msg_data_left()
convert open-coded instances Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net')
-rw-r--r--net/core/datagram.c2
-rw-r--r--net/ipv4/tcp.c8
-rw-r--r--net/rxrpc/ar-output.c19
-rw-r--r--net/socket.c4
4 files changed, 16 insertions, 17 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c
index df493d68330c..b80fb91bb3f7 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -673,7 +673,7 @@ int skb_copy_and_csum_datagram_msg(struct sk_buff *skb,
if (!chunk)
return 0;
- if (iov_iter_count(&msg->msg_iter) < chunk) {
+ if (msg_data_left(msg) < chunk) {
if (__skb_checksum_complete(skb))
goto csum_error;
if (skb_copy_datagram_msg(skb, hlen, msg, chunk))
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 094a6822c71d..18e3a12eb1b2 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1119,7 +1119,7 @@ int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
sg = !!(sk->sk_route_caps & NETIF_F_SG);
- while (iov_iter_count(&msg->msg_iter)) {
+ while (msg_data_left(msg)) {
int copy = 0;
int max = size_goal;
@@ -1163,8 +1163,8 @@ new_segment:
}
/* Try to append data to the end of skb. */
- if (copy > iov_iter_count(&msg->msg_iter))
- copy = iov_iter_count(&msg->msg_iter);
+ if (copy > msg_data_left(msg))
+ copy = msg_data_left(msg);
/* Where to copy to? */
if (skb_availroom(skb) > 0) {
@@ -1221,7 +1221,7 @@ new_segment:
tcp_skb_pcount_set(skb, 0);
copied += copy;
- if (!iov_iter_count(&msg->msg_iter)) {
+ if (!msg_data_left(msg)) {
tcp_tx_timestamp(sk, skb);
goto out;
}
diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c
index 7a31a3958364..c0042807bfc6 100644
--- a/net/rxrpc/ar-output.c
+++ b/net/rxrpc/ar-output.c
@@ -564,8 +564,8 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
max &= ~(call->conn->size_align - 1UL);
chunk = max;
- if (chunk > iov_iter_count(&msg->msg_iter) && !more)
- chunk = iov_iter_count(&msg->msg_iter);
+ if (chunk > msg_data_left(msg) && !more)
+ chunk = msg_data_left(msg);
space = chunk + call->conn->size_align;
space &= ~(call->conn->size_align - 1UL);
@@ -608,11 +608,11 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
sp = rxrpc_skb(skb);
/* append next segment of data to the current buffer */
- if (iov_iter_count(&msg->msg_iter) > 0) {
+ if (msg_data_left(msg) > 0) {
int copy = skb_tailroom(skb);
ASSERTCMP(copy, >, 0);
- if (copy > iov_iter_count(&msg->msg_iter))
- copy = iov_iter_count(&msg->msg_iter);
+ if (copy > msg_data_left(msg))
+ copy = msg_data_left(msg);
if (copy > sp->remain)
copy = sp->remain;
@@ -633,7 +633,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
/* add the packet to the send queue if it's now full */
if (sp->remain <= 0 ||
- (iov_iter_count(&msg->msg_iter) == 0 && !more)) {
+ (msg_data_left(msg) == 0 && !more)) {
struct rxrpc_connection *conn = call->conn;
uint32_t seq;
size_t pad;
@@ -663,7 +663,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
sp->hdr.serviceId = conn->service_id;
sp->hdr.flags = conn->out_clientflag;
- if (iov_iter_count(&msg->msg_iter) == 0 && !more)
+ if (msg_data_left(msg) == 0 && !more)
sp->hdr.flags |= RXRPC_LAST_PACKET;
else if (CIRC_SPACE(call->acks_head, call->acks_tail,
call->acks_winsz) > 1)
@@ -679,11 +679,10 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
memcpy(skb->head, &sp->hdr,
sizeof(struct rxrpc_header));
- rxrpc_queue_packet(call, skb,
- iov_iter_count(&msg->msg_iter) == 0 && !more);
+ rxrpc_queue_packet(call, skb, !msg_data_left(msg) && !more);
skb = NULL;
}
- } while (iov_iter_count(&msg->msg_iter) > 0);
+ } while (msg_data_left(msg) > 0);
success:
ret = copied;
diff --git a/net/socket.c b/net/socket.c
index 21676e469b13..5b0126234606 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -612,7 +612,7 @@ EXPORT_SYMBOL(__sock_tx_timestamp);
static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
{
- int ret = sock->ops->sendmsg(sock, msg, iov_iter_count(&msg->msg_iter));
+ int ret = sock->ops->sendmsg(sock, msg, msg_data_left(msg));
BUG_ON(ret == -EIOCBQUEUED);
return ret;
}
@@ -620,7 +620,7 @@ static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
int sock_sendmsg(struct socket *sock, struct msghdr *msg)
{
int err = security_socket_sendmsg(sock, msg,
- iov_iter_count(&msg->msg_iter));
+ msg_data_left(msg));
return err ?: sock_sendmsg_nosec(sock, msg);
}