/*
* Write data to socket.
*/
static inline int
xprt_sendmsg(struct rpc_xprt *xprt, struct rpc_rqst *req)
{
struct socket *sock = xprt->sock;
struct xdr_buf *xdr = &req->rq_snd_buf;
struct sockaddr *addr = NULL;
int addrlen = 0;
unsigned int skip;
int result;
if (!sock)
return -ENOTCONN;
xprt_pktdump("packet data:",
req->rq_svec->iov_base,
req->rq_svec->iov_len);
/* For UDP, we need to provide an address */
if (!xprt->stream) {
addr = (struct sockaddr *) &xprt->addr;
addrlen = sizeof(xprt->addr);
}
/* Dont repeat bytes */
skip = req->rq_bytes_sent;
clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags);
result = xdr_sendpages(sock, addr, addrlen, xdr, skip, MSG_DONTWAIT);
dprintk("RPC: xprt_sendmsg(%d) = %d\n", xdr->len - skip, result);
if (result >= 0)
return result;
switch (result) {
case -ECONNREFUSED:
/* When the server has died, an ICMP port unreachable message
* prompts ECONNREFUSED.
*/
case -EAGAIN:
break;
case -ECONNRESET:
case -ENOTCONN:
case -EPIPE:
/* connection broken */
if (xprt->stream)
result = -ENOTCONN;
break;
default:
printk(KERN_NOTICE "RPC: sendmsg returned error %d\n", -result);
}
return result;
}
/*
* Write data to socket.
*/
static inline int
xprt_sendmsg(struct rpc_xprt *xprt, struct rpc_rqst *req)
{
struct socket *sock = xprt->sock;
struct msghdr msg;
struct xdr_buf *xdr = &req->rq_snd_buf;
struct iovec niv[MAX_IOVEC];
unsigned int niov, slen, skip;
mm_segment_t oldfs;
int result;
if (!sock)
return -ENOTCONN;
xprt_pktdump("packet data:",
req->rq_svec->iov_base,
req->rq_svec->iov_len);
/* Dont repeat bytes */
skip = req->rq_bytes_sent;
slen = xdr->len - skip;
niov = xdr_kmap(niv, xdr, skip);
msg.msg_flags = MSG_DONTWAIT|MSG_NOSIGNAL;
msg.msg_iov = niv;
msg.msg_iovlen = niov;
msg.msg_name = (struct sockaddr *) &xprt->addr;
msg.msg_namelen = sizeof(xprt->addr);
msg.msg_control = NULL;
msg.msg_controllen = 0;
oldfs = get_fs(); set_fs(get_ds());
clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags);
result = sock_sendmsg(sock, &msg, slen);
set_fs(oldfs);
xdr_kunmap(xdr, skip);
dprintk("RPC: xprt_sendmsg(%d) = %d\n", slen, result);
if (result >= 0)
return result;
switch (result) {
case -ECONNREFUSED:
/* When the server has died, an ICMP port unreachable message
* prompts ECONNREFUSED.
*/
case -EAGAIN:
break;
case -ENOTCONN:
case -EPIPE:
/* connection broken */
if (xprt->stream)
result = -ENOTCONN;
break;
default:
printk(KERN_NOTICE "RPC: sendmsg returned error %d\n", -result);
}
return result;
}
