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tipc_msg_build(): pass msghdr instead of its ->msg_iov

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-15 01:16:27 -05:00
parent 562640f3c3
commit 45dcc687f7
3 changed files with 8 additions and 9 deletions
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8
net/tipc/msg.c
View File

@ -162,14 +162,14 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
/**
* tipc_msg_build - create buffer chain containing specified header and data
* @mhdr: Message header, to be prepended to data
* @iov: User data
* @m: User message
* @offset: Posision in iov to start copying from
* @dsz: Total length of user data
* @pktmax: Max packet size that can be used
* @chain: Buffer or chain of buffers to be returned to caller
* Returns message data size or errno: -ENOMEM, -EFAULT
*/
int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
int offset, int dsz, int pktmax , struct sk_buff **chain)
{
int mhsz = msg_hdr_sz(mhdr);
@ -194,7 +194,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
skb_copy_to_linear_data(buf, mhdr, mhsz);
pktpos = buf->data + mhsz;
TIPC_SKB_CB(buf)->chain_sz = 1;
if (!dsz || !memcpy_fromiovecend(pktpos, iov, offset, dsz))
if (!dsz || !memcpy_fromiovecend(pktpos, m->msg_iov, offset, dsz))
return dsz;
rc = -EFAULT;
goto error;
@ -223,7 +223,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
if (drem < pktrem)
pktrem = drem;
if (memcpy_fromiovecend(pktpos, iov, offset, pktrem)) {
if (memcpy_fromiovecend(pktpos, m->msg_iov, offset, pktrem)) {
rc = -EFAULT;
goto error;
}

2
net/tipc/msg.h
View File

@ -743,7 +743,7 @@ bool tipc_msg_bundle(struct sk_buff *bbuf, struct sk_buff *buf, u32 mtu);
bool tipc_msg_make_bundle(struct sk_buff **buf, u32 mtu, u32 dnode);
int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
int offset, int dsz, int mtu , struct sk_buff **chain);
struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain);

7
net/tipc/socket.c
View File

@ -727,7 +727,7 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
new_mtu:
mtu = tipc_bclink_get_mtu();
rc = tipc_msg_build(mhdr, msg->msg_iov, 0, dsz, mtu, &buf);
rc = tipc_msg_build(mhdr, msg, 0, dsz, mtu, &buf);
if (unlikely(rc < 0))
return rc;
@ -905,7 +905,6 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_msg *mhdr = &tsk->phdr;
struct iovec *iov = m->msg_iov;
u32 dnode, dport;
struct sk_buff *buf;
struct tipc_name_seq *seq = &dest->addr.nameseq;
@ -982,7 +981,7 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
new_mtu:
mtu = tipc_node_get_mtu(dnode, tsk->ref);
rc = tipc_msg_build(mhdr, iov, 0, dsz, mtu, &buf);
rc = tipc_msg_build(mhdr, m, 0, dsz, mtu, &buf);
if (rc < 0)
goto exit;
@ -1094,7 +1093,7 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
next:
mtu = tsk->max_pkt;
send = min_t(uint, dsz - sent, TIPC_MAX_USER_MSG_SIZE);
rc = tipc_msg_build(mhdr, m->msg_iov, sent, send, mtu, &buf);
rc = tipc_msg_build(mhdr, m, sent, send, mtu, &buf);
if (unlikely(rc < 0))
goto exit;
do {