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Commit e9b59558 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
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[PATCH] sparse: iovec cleanups - ncpfs 

ncpfs switched to kvec and kernel_...msg()
parent 99304db7
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Showing with 89 additions and 129 deletions
fs/ncpfs/sock.c
View file @ e9b59558
......@@ -31,40 +31,26 @@
#include "ncpsign_kernel.h"
static int _recv(struct socket *sock, unsigned char *ubuf, int size,
unsigned flags)
static int _recv(struct socket *sock, void *buf, int size, unsigned flags)
{
struct iovec iov;
struct msghdr msg;
iov.iov_base = ubuf;
iov.iov_len = size;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
return sock_recvmsg(sock, &msg, size, flags);
struct msghdr msg = {NULL, };
struct kvec iov = {buf, size};
return kernel_recvmsg(sock, &msg, &iov, 1, size, flags);
}
static inline int _send(struct socket *sock, const void *buff, int len)
static inline int do_send(struct socket *sock, struct kvec *vec, int count,
int len, unsigned flags)
{
struct iovec iov;
struct msghdr msg;
iov.iov_base = (void *) buff;
iov.iov_len = len;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
struct msghdr msg = { .msg_flags = flags };
return kernel_sendmsg(sock, &msg, vec, count, len);
}
return sock_sendmsg(sock, &msg, len);
static int _send(struct socket *sock, const void *buff, int len)
{
struct kvec vec;
vec.iov_base = (void *) buff;
vec.iov_len = len;
return do_send(sock, &vec, 1, len, 0);
}
struct ncp_request_reply {
......@@ -74,52 +60,57 @@ struct ncp_request_reply {
size_t datalen;
int result;
enum { RQ_DONE, RQ_INPROGRESS, RQ_QUEUED, RQ_IDLE } status;
struct iovec* tx_ciov;
struct kvec* tx_ciov;
size_t tx_totallen;
size_t tx_iovlen;
struct iovec tx_iov[3];
struct kvec tx_iov[3];
u_int16_t tx_type;
u_int32_t sign[6];
};
void ncp_tcp_data_ready(struct sock *sk, int len) {
void ncp_tcp_data_ready(struct sock *sk, int len)
{
struct ncp_server *server = sk->sk_user_data;
server->data_ready(sk, len);
schedule_work(&server->rcv.tq);
}
void ncp_tcp_error_report(struct sock *sk) {
void ncp_tcp_error_report(struct sock *sk)
{
struct ncp_server *server = sk->sk_user_data;
server->error_report(sk);
schedule_work(&server->rcv.tq);
}
void ncp_tcp_write_space(struct sock *sk) {
void ncp_tcp_write_space(struct sock *sk)
{
struct ncp_server *server = sk->sk_user_data;
/* We do not need any locking: we first set tx.creq, and then we do sendmsg,
not vice versa... */
server->write_space(sk);
if (server->tx.creq) {
if (server->tx.creq)
schedule_work(&server->tx.tq);
}
}
void ncpdgram_timeout_call(unsigned long v) {
void ncpdgram_timeout_call(unsigned long v)
{
struct ncp_server *server = (void*)v;
schedule_work(&server->timeout_tq);
}
static inline void ncp_finish_request(struct ncp_request_reply *req, int result) {
static inline void ncp_finish_request(struct ncp_request_reply *req, int result)
{
req->result = result;
req->status = RQ_DONE;
wake_up_all(&req->wq);
}
static void __abort_ncp_connection(struct ncp_server *server, struct ncp_request_reply *aborted, int err) {
static void __abort_ncp_connection(struct ncp_server *server, struct ncp_request_reply *aborted, int err)
{
struct ncp_request_reply *req;
ncp_invalidate_conn(server);
......@@ -156,11 +147,13 @@ static void __abort_ncp_connection(struct ncp_server *server, struct ncp_request
}
}
static inline int get_conn_number(struct ncp_reply_header *rp) {
static inline int get_conn_number(struct ncp_reply_header *rp)
{
return rp->conn_low | (rp->conn_high << 8);
}
static inline void __ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err) {
static inline void __ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
{
/* If req is done, we got signal, but we also received answer... */
switch (req->status) {
case RQ_IDLE:
......@@ -176,55 +169,46 @@ static inline void __ncp_abort_request(struct ncp_server *server, struct ncp_req
}
}
static inline void ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err) {
static inline void ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
{
down(&server->rcv.creq_sem);
__ncp_abort_request(server, req, err);
up(&server->rcv.creq_sem);
}
static inline void __ncptcp_abort(struct ncp_server *server) {
static inline void __ncptcp_abort(struct ncp_server *server)
{
__abort_ncp_connection(server, NULL, 0);
}
static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req) {
struct msghdr msg;
struct iovec iov[3];
static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req)
{
struct kvec vec[3];
/* sock_sendmsg updates iov pointers for us :-( */
memcpy(iov, req->tx_ciov, req->tx_iovlen * sizeof(iov[0]));
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_iov = iov;
msg.msg_iovlen = req->tx_iovlen;
msg.msg_flags = MSG_DONTWAIT;
return sock_sendmsg(sock, &msg, req->tx_totallen);
memcpy(vec, req->tx_ciov, req->tx_iovlen * sizeof(vec[0]));
return do_send(sock, vec, req->tx_iovlen,
req->tx_totallen, MSG_DONTWAIT);
}
static void __ncptcp_try_send(struct ncp_server *server) {
static void __ncptcp_try_send(struct ncp_server *server)
{
struct ncp_request_reply *rq;
struct msghdr msg;
struct iovec* iov;
struct iovec iovc[3];
struct kvec *iov;
struct kvec iovc[3];
int result;
rq = server->tx.creq;
if (!rq) {
if (!rq)
return;
}
/* sock_sendmsg updates iov pointers for us :-( */
memcpy(iovc, rq->tx_ciov, rq->tx_iovlen * sizeof(iov[0]));
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_iov = iovc;
msg.msg_iovlen = rq->tx_iovlen;
msg.msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT;
result = sock_sendmsg(server->ncp_sock, &msg, rq->tx_totallen);
if (result == -EAGAIN) {
result = do_send(server->ncp_sock, iovc, rq->tx_iovlen,
rq->tx_totallen, MSG_NOSIGNAL | MSG_DONTWAIT);
if (result == -EAGAIN)
return;
}
if (result < 0) {
printk(KERN_ERR "ncpfs: tcp: Send failed: %d\n", result);
__ncp_abort_request(server, rq, result);
......@@ -247,14 +231,16 @@ static void __ncptcp_try_send(struct ncp_server *server) {
rq->tx_ciov = iov;
}
static inline void ncp_init_header(struct ncp_server *server, struct ncp_request_reply *req, struct ncp_request_header *h) {
static inline void ncp_init_header(struct ncp_server *server, struct ncp_request_reply *req, struct ncp_request_header *h)
{
req->status = RQ_INPROGRESS;
h->conn_low = server->connection;
h->conn_high = server->connection >> 8;
h->sequence = ++server->sequence;
}
static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request_reply *req) {
static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
size_t signlen;
struct ncp_request_header* h;
......@@ -282,7 +268,8 @@ static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request
#define NCP_TCP_XMIT_VERSION (1)
#define NCP_TCP_RCVD_MAGIC (0x744E6350)
static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_reply *req) {
static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
size_t signlen;
struct ncp_request_header* h;
......@@ -306,14 +293,16 @@ static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_r
__ncptcp_try_send(server);
}
static inline void __ncp_start_request(struct ncp_server *server, struct ncp_request_reply *req) {
static inline void __ncp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
if (server->ncp_sock->type == SOCK_STREAM)
ncptcp_start_request(server, req);
else
ncpdgram_start_request(server, req);
}
static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply *req) {
static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply *req)
{
down(&server->rcv.creq_sem);
if (!ncp_conn_valid(server)) {
up(&server->rcv.creq_sem);
......@@ -331,7 +320,8 @@ static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply *
return 0;
}
static void __ncp_next_request(struct ncp_server *server) {
static void __ncp_next_request(struct ncp_server *server)
{
struct ncp_request_reply *req;
server->rcv.creq = NULL;
......@@ -343,10 +333,10 @@ static void __ncp_next_request(struct ncp_server *server) {
__ncp_start_request(server, req);
}
static void info_server(struct ncp_server *server, unsigned int id, const void * data, size_t len) {
static void info_server(struct ncp_server *server, unsigned int id, const void * data, size_t len)
{
if (server->info_sock) {
struct iovec iov[2];
struct msghdr msg;
struct kvec iov[2];
__u32 hdr[2];
hdr[0] = cpu_to_be32(len + 8);
......@@ -357,18 +347,12 @@ static void info_server(struct ncp_server *server, unsigned int id, const void *
iov[1].iov_base = (void *) data;
iov[1].iov_len = len;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_iov = iov;
msg.msg_iovlen = 2;
msg.msg_flags = MSG_NOSIGNAL;
sock_sendmsg(server->info_sock, &msg, len + 8);
do_send(server->info_sock, iov, 2, len + 8, MSG_NOSIGNAL);
}
}
static void __ncpdgram_rcv_proc(void *s) {
void ncpdgram_rcv_proc(void *s)
{
struct ncp_server *server = s;
struct socket* sock;
......@@ -378,7 +362,7 @@ static void __ncpdgram_rcv_proc(void *s) {
struct ncp_reply_header reply;
int result;
result = _recv(sock, (void*)&reply, sizeof(reply), MSG_PEEK | MSG_DONTWAIT);
result = _recv(sock, &reply, sizeof(reply), MSG_PEEK | MSG_DONTWAIT);
if (result < 0) {
break;
}
......@@ -453,21 +437,12 @@ static void __ncpdgram_rcv_proc(void *s) {
up(&server->rcv.creq_sem);
}
drop:;
_recv(sock, (void*)&reply, sizeof(reply), MSG_DONTWAIT);
_recv(sock, &reply, sizeof(reply), MSG_DONTWAIT);
}
}
void ncpdgram_rcv_proc(void *s) {
mm_segment_t fs;
struct ncp_server *server = s;
fs = get_fs();
set_fs(get_ds());
__ncpdgram_rcv_proc(server);
set_fs(fs);
}
static void __ncpdgram_timeout_proc(struct ncp_server *server) {
static void __ncpdgram_timeout_proc(struct ncp_server *server)
{
/* If timer is pending, we are processing another request... */
if (!timer_pending(&server->timeout_tm)) {
struct ncp_request_reply* req;
......@@ -494,24 +469,22 @@ static void __ncpdgram_timeout_proc(struct ncp_server *server) {
}
}
void ncpdgram_timeout_proc(void *s) {
mm_segment_t fs;
void ncpdgram_timeout_proc(void *s)
{
struct ncp_server *server = s;
fs = get_fs();
set_fs(get_ds());
down(&server->rcv.creq_sem);
__ncpdgram_timeout_proc(server);
up(&server->rcv.creq_sem);
set_fs(fs);
}
static inline void ncp_init_req(struct ncp_request_reply* req) {
static inline void ncp_init_req(struct ncp_request_reply* req)
{
init_waitqueue_head(&req->wq);
req->status = RQ_IDLE;
}
static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len) {
static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len)
{
int result;
if (buffer) {
......@@ -534,7 +507,8 @@ static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len) {
return result;
}
static int __ncptcp_rcv_proc(struct ncp_server *server) {
static int __ncptcp_rcv_proc(struct ncp_server *server)
{
/* We have to check the result, so store the complete header */
while (1) {
int result;
......@@ -679,30 +653,22 @@ skipdata:;
}
}
void ncp_tcp_rcv_proc(void *s) {
mm_segment_t fs;
void ncp_tcp_rcv_proc(void *s)
{
struct ncp_server *server = s;
fs = get_fs();
set_fs(get_ds());
down(&server->rcv.creq_sem);
__ncptcp_rcv_proc(server);
up(&server->rcv.creq_sem);
set_fs(fs);
return;
}
void ncp_tcp_tx_proc(void *s) {
mm_segment_t fs;
void ncp_tcp_tx_proc(void *s)
{
struct ncp_server *server = s;
fs = get_fs();
set_fs(get_ds());
down(&server->rcv.creq_sem);
__ncptcp_try_send(server);
up(&server->rcv.creq_sem);
set_fs(fs);
return;
}
static int do_ncp_rpc_call(struct ncp_server *server, int size,
......@@ -714,7 +680,7 @@ static int do_ncp_rpc_call(struct ncp_server *server, int size,
ncp_init_req(&req);
req.reply_buf = reply_buf;
req.datalen = max_reply_size;
req.tx_iov[1].iov_base = (void *) server->packet;
req.tx_iov[1].iov_base = server->packet;
req.tx_iov[1].iov_len = size;
req.tx_iovlen = 1;
req.tx_totallen = size;
......@@ -748,7 +714,6 @@ static int ncp_do_request(struct ncp_server *server, int size,
return -EIO;
}
{
mm_segment_t fs;
sigset_t old_set;
unsigned long mask, flags;
......@@ -773,13 +738,8 @@ static int ncp_do_request(struct ncp_server *server, int size,
recalc_sigpending();
spin_unlock_irqrestore(&current->sighand->siglock, flags);
fs = get_fs();
set_fs(get_ds());
result = do_ncp_rpc_call(server, size, reply, max_reply_size);
set_fs(fs);
spin_lock_irqsave(&current->sighand->siglock, flags);
current->blocked = old_set;
recalc_sigpending();
......
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