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Commit ea00b8e2 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by David S. Miller
Browse files

can: switch to seq_file 



create_proc_read_entry() is going to be removed soon.

Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4923576b

net/can/bcm.c

+36 −49
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ 
#include <linux/hrtimer.h>

#include <linux/list.h>

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <linux/uio.h>

#include <linux/net.h>

#include <linux/netdevice.h>
@@ -146,23 +147,18 @@ static char *bcm_proc_getifname(int ifindex) 
	return "???";

}



static int bcm_read_proc(char *page, char **start, off_t off,

			 int count, int *eof, void *data)

static int bcm_proc_show(struct seq_file *m, void *v)

{

	int len = 0;

	struct sock *sk = (struct sock *)data;

	struct sock *sk = (struct sock *)m->private;

	struct bcm_sock *bo = bcm_sk(sk);

	struct bcm_op *op;



	len += snprintf(page + len, PAGE_SIZE - len, ">>> socket %p",

			sk->sk_socket);

	len += snprintf(page + len, PAGE_SIZE - len, " / sk %p", sk);

	len += snprintf(page + len, PAGE_SIZE - len, " / bo %p", bo);

	len += snprintf(page + len, PAGE_SIZE - len, " / dropped %lu",

			bo->dropped_usr_msgs);

	len += snprintf(page + len, PAGE_SIZE - len, " / bound %s",

			bcm_proc_getifname(bo->ifindex));

	len += snprintf(page + len, PAGE_SIZE - len, " <<<\n");

	seq_printf(m, ">>> socket %p", sk->sk_socket);

	seq_printf(m, " / sk %p", sk);

	seq_printf(m, " / bo %p", bo);

	seq_printf(m, " / dropped %lu", bo->dropped_usr_msgs);

	seq_printf(m, " / bound %s", bcm_proc_getifname(bo->ifindex));

	seq_printf(m, " <<<\n");



	list_for_each_entry(op, &bo->rx_ops, list) {
@@ -172,71 +168,62 @@ static int bcm_read_proc(char *page, char **start, off_t off, 
		if (!op->frames_abs)

			continue;



		len += snprintf(page + len, PAGE_SIZE - len,

				"rx_op: %03X %-5s ",

		seq_printf(m, "rx_op: %03X %-5s ",

				op->can_id, bcm_proc_getifname(op->ifindex));

		len += snprintf(page + len, PAGE_SIZE - len, "[%d]%c ",

				op->nframes,

		seq_printf(m, "[%d]%c ", op->nframes,

				(op->flags & RX_CHECK_DLC)?'d':' ');

		if (op->kt_ival1.tv64)

			len += snprintf(page + len, PAGE_SIZE - len,

					"timeo=%lld ",

			seq_printf(m, "timeo=%lld ",

					(long long)

					ktime_to_us(op->kt_ival1));



		if (op->kt_ival2.tv64)

			len += snprintf(page + len, PAGE_SIZE - len,

					"thr=%lld ",

			seq_printf(m, "thr=%lld ",

					(long long)

					ktime_to_us(op->kt_ival2));



		len += snprintf(page + len, PAGE_SIZE - len,

				"# recv %ld (%ld) => reduction: ",

		seq_printf(m, "# recv %ld (%ld) => reduction: ",

				op->frames_filtered, op->frames_abs);



		reduction = 100 - (op->frames_filtered * 100) / op->frames_abs;



		len += snprintf(page + len, PAGE_SIZE - len, "%s%ld%%\n",

		seq_printf(m, "%s%ld%%\n",

				(reduction == 100)?"near ":"", reduction);



		if (len > PAGE_SIZE - 200) {

			/* mark output cut off */

			len += snprintf(page + len, PAGE_SIZE - len, "(..)\n");

			break;

		}

	}



	list_for_each_entry(op, &bo->tx_ops, list) {



		len += snprintf(page + len, PAGE_SIZE - len,

				"tx_op: %03X %s [%d] ",

		seq_printf(m, "tx_op: %03X %s [%d] ",

				op->can_id, bcm_proc_getifname(op->ifindex),

				op->nframes);



		if (op->kt_ival1.tv64)

			len += snprintf(page + len, PAGE_SIZE - len, "t1=%lld ",

			seq_printf(m, "t1=%lld ",

					(long long) ktime_to_us(op->kt_ival1));



		if (op->kt_ival2.tv64)

			len += snprintf(page + len, PAGE_SIZE - len, "t2=%lld ",

			seq_printf(m, "t2=%lld ",

					(long long) ktime_to_us(op->kt_ival2));



		len += snprintf(page + len, PAGE_SIZE - len, "# sent %ld\n",

				op->frames_abs);



		if (len > PAGE_SIZE - 100) {

			/* mark output cut off */

			len += snprintf(page + len, PAGE_SIZE - len, "(..)\n");

			break;

		seq_printf(m, "# sent %ld\n", op->frames_abs);

	}

	seq_putc(m, '\n');

	return 0;

}



	len += snprintf(page + len, PAGE_SIZE - len, "\n");



	*eof = 1;

	return len;

static int bcm_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, bcm_proc_show, PDE(inode)->data);

}



static const struct file_operations bcm_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= bcm_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



/*

 * bcm_can_tx - send the (next) CAN frame to the appropriate CAN interface

 *              of the given bcm tx op
@@ -1515,9 +1502,9 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len, 
	if (proc_dir) {

		/* unique socket address as filename */

		sprintf(bo->procname, "%p", sock);

		bo->bcm_proc_read = create_proc_read_entry(bo->procname, 0644,

		bo->bcm_proc_read = proc_create_data(bo->procname, 0644,

						     proc_dir,

							   bcm_read_proc, sk);

						     &bcm_proc_fops, sk);

	}



	return 0;

net/can/proc.c

+131 −150
Original line number Diff line number Diff line
@@ -196,7 +196,7 @@ void can_stat_update(unsigned long data) 
 *

 */



static int can_print_rcvlist(char *page, int len, struct hlist_head *rx_list,

static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,

			      struct net_device *dev)

{

	struct receiver *r;
@@ -208,199 +208,188 @@ static int can_print_rcvlist(char *page, int len, struct hlist_head *rx_list, 
			"   %-5s  %08X  %08x  %08x  %08x  %8ld  %s\n" :

			"   %-5s     %03X    %08x  %08lx  %08lx  %8ld  %s\n";



		len += snprintf(page + len, PAGE_SIZE - len, fmt,

				DNAME(dev), r->can_id, r->mask,

		seq_printf(m, fmt, DNAME(dev), r->can_id, r->mask,

				(unsigned long)r->func, (unsigned long)r->data,

				r->matches, r->ident);



		/* does a typical line fit into the current buffer? */



		/* 100 Bytes before end of buffer */

		if (len > PAGE_SIZE - 100) {

			/* mark output cut off */

			len += snprintf(page + len, PAGE_SIZE - len,

					"   (..)\n");

			break;

		}

	}

	rcu_read_unlock();



	return len;

}



static int can_print_recv_banner(char *page, int len)

static void can_print_recv_banner(struct seq_file *m)

{

	/*

	 *                  can1.  00000000  00000000  00000000

	 *                 .......          0  tp20

	 */

	len += snprintf(page + len, PAGE_SIZE - len,

			"  device   can_id   can_mask  function"

	seq_puts(m, "  device   can_id   can_mask  function"

			"  userdata   matches  ident\n");



	return len;

}



static int can_proc_read_stats(char *page, char **start, off_t off,

			       int count, int *eof, void *data)

static int can_stats_proc_show(struct seq_file *m, void *v)

{

	int len = 0;

	seq_putc(m, '\n');

	seq_printf(m, " %8ld transmitted frames (TXF)\n", can_stats.tx_frames);

	seq_printf(m, " %8ld received frames (RXF)\n", can_stats.rx_frames);

	seq_printf(m, " %8ld matched frames (RXMF)\n", can_stats.matches);



	len += snprintf(page + len, PAGE_SIZE - len, "\n");

	len += snprintf(page + len, PAGE_SIZE - len,

			" %8ld transmitted frames (TXF)\n",

			can_stats.tx_frames);

	len += snprintf(page + len, PAGE_SIZE - len,

			" %8ld received frames (RXF)\n", can_stats.rx_frames);

	len += snprintf(page + len, PAGE_SIZE - len,

			" %8ld matched frames (RXMF)\n", can_stats.matches);



	len += snprintf(page + len, PAGE_SIZE - len, "\n");

	seq_putc(m, '\n');



	if (can_stattimer.function == can_stat_update) {

		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld %% total match ratio (RXMR)\n",

		seq_printf(m, " %8ld %% total match ratio (RXMR)\n",

				can_stats.total_rx_match_ratio);



		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s total tx rate (TXR)\n",

		seq_printf(m, " %8ld frames/s total tx rate (TXR)\n",

				can_stats.total_tx_rate);

		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s total rx rate (RXR)\n",

		seq_printf(m, " %8ld frames/s total rx rate (RXR)\n",

				can_stats.total_rx_rate);



		len += snprintf(page + len, PAGE_SIZE - len, "\n");

		seq_putc(m, '\n');



		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld %% current match ratio (CRXMR)\n",

		seq_printf(m, " %8ld %% current match ratio (CRXMR)\n",

				can_stats.current_rx_match_ratio);



		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s current tx rate (CTXR)\n",

		seq_printf(m, " %8ld frames/s current tx rate (CTXR)\n",

				can_stats.current_tx_rate);

		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s current rx rate (CRXR)\n",

		seq_printf(m, " %8ld frames/s current rx rate (CRXR)\n",

				can_stats.current_rx_rate);



		len += snprintf(page + len, PAGE_SIZE - len, "\n");

		seq_putc(m, '\n');



		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld %% max match ratio (MRXMR)\n",

		seq_printf(m, " %8ld %% max match ratio (MRXMR)\n",

				can_stats.max_rx_match_ratio);



		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s max tx rate (MTXR)\n",

		seq_printf(m, " %8ld frames/s max tx rate (MTXR)\n",

				can_stats.max_tx_rate);

		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld frames/s max rx rate (MRXR)\n",

		seq_printf(m, " %8ld frames/s max rx rate (MRXR)\n",

				can_stats.max_rx_rate);



		len += snprintf(page + len, PAGE_SIZE - len, "\n");

		seq_putc(m, '\n');

	}



	len += snprintf(page + len, PAGE_SIZE - len,

			" %8ld current receive list entries (CRCV)\n",

	seq_printf(m, " %8ld current receive list entries (CRCV)\n",

			can_pstats.rcv_entries);

	len += snprintf(page + len, PAGE_SIZE - len,

			" %8ld maximum receive list entries (MRCV)\n",

	seq_printf(m, " %8ld maximum receive list entries (MRCV)\n",

			can_pstats.rcv_entries_max);



	if (can_pstats.stats_reset)

		len += snprintf(page + len, PAGE_SIZE - len,

				"\n %8ld statistic resets (STR)\n",

		seq_printf(m, "\n %8ld statistic resets (STR)\n",

				can_pstats.stats_reset);



	if (can_pstats.user_reset)

		len += snprintf(page + len, PAGE_SIZE - len,

				" %8ld user statistic resets (USTR)\n",

		seq_printf(m, " %8ld user statistic resets (USTR)\n",

				can_pstats.user_reset);



	len += snprintf(page + len, PAGE_SIZE - len, "\n");



	*eof = 1;

	return len;

	seq_putc(m, '\n');

	return 0;

}



static int can_proc_read_reset_stats(char *page, char **start, off_t off,

				     int count, int *eof, void *data)

static int can_stats_proc_open(struct inode *inode, struct file *file)

{

	int len = 0;

	return single_open(file, can_stats_proc_show, NULL);

}



static const struct file_operations can_stats_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= can_stats_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int can_reset_stats_proc_show(struct seq_file *m, void *v)

{

	user_reset = 1;



	if (can_stattimer.function == can_stat_update) {

		len += snprintf(page + len, PAGE_SIZE - len,

				"Scheduled statistic reset #%ld.\n",

		seq_printf(m, "Scheduled statistic reset #%ld.\n",

				can_pstats.stats_reset + 1);



	} else {

		if (can_stats.jiffies_init != jiffies)

			can_init_stats();



		len += snprintf(page + len, PAGE_SIZE - len,

				"Performed statistic reset #%ld.\n",

		seq_printf(m, "Performed statistic reset #%ld.\n",

				can_pstats.stats_reset);

	}

	return 0;

}



	*eof = 1;

	return len;

static int can_reset_stats_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, can_reset_stats_proc_show, NULL);

}



static int can_proc_read_version(char *page, char **start, off_t off,

				 int count, int *eof, void *data)

static const struct file_operations can_reset_stats_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= can_reset_stats_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int can_version_proc_show(struct seq_file *m, void *v)

{

	int len = 0;

	seq_printf(m, "%s\n", CAN_VERSION_STRING);

	return 0;

}



	len += snprintf(page + len, PAGE_SIZE - len, "%s\n",

			CAN_VERSION_STRING);

	*eof = 1;

	return len;

static int can_version_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, can_version_proc_show, NULL);

}



static int can_proc_read_rcvlist(char *page, char **start, off_t off,

				 int count, int *eof, void *data)

static const struct file_operations can_version_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= can_version_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int can_rcvlist_proc_show(struct seq_file *m, void *v)

{

	/* double cast to prevent GCC warning */

	int idx = (int)(long)data;

	int len = 0;

	int idx = (int)(long)m->private;

	struct dev_rcv_lists *d;

	struct hlist_node *n;



	len += snprintf(page + len, PAGE_SIZE - len,

			"\nreceive list '%s':\n", rx_list_name[idx]);

	seq_printf(m, "\nreceive list '%s':\n", rx_list_name[idx]);



	rcu_read_lock();

	hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {



		if (!hlist_empty(&d->rx[idx])) {

			len = can_print_recv_banner(page, len);

			len = can_print_rcvlist(page, len, &d->rx[idx], d->dev);

			can_print_recv_banner(m);

			can_print_rcvlist(m, &d->rx[idx], d->dev);

		} else

			len += snprintf(page + len, PAGE_SIZE - len,

					"  (%s: no entry)\n", DNAME(d->dev));



		/* exit on end of buffer? */

		if (len > PAGE_SIZE - 100)

			break;

			seq_printf(m, "  (%s: no entry)\n", DNAME(d->dev));

	}

	rcu_read_unlock();



	len += snprintf(page + len, PAGE_SIZE - len, "\n");

	seq_putc(m, '\n');

	return 0;

}



	*eof = 1;

	return len;

static int can_rcvlist_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, can_rcvlist_proc_show, PDE(inode)->data);

}



static int can_proc_read_rcvlist_sff(char *page, char **start, off_t off,

				     int count, int *eof, void *data)

static const struct file_operations can_rcvlist_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= can_rcvlist_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)

{

	int len = 0;

	struct dev_rcv_lists *d;

	struct hlist_node *n;



	/* RX_SFF */

	len += snprintf(page + len, PAGE_SIZE - len,

			"\nreceive list 'rx_sff':\n");

	seq_puts(m, "\nreceive list 'rx_sff':\n");



	rcu_read_lock();

	hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
@@ -413,46 +402,38 @@ static int can_proc_read_rcvlist_sff(char *page, char **start, off_t off, 
			}



		if (!all_empty) {

			len = can_print_recv_banner(page, len);

			can_print_recv_banner(m);

			for (i = 0; i < 0x800; i++) {

				if (!hlist_empty(&d->rx_sff[i]) &&

				    len < PAGE_SIZE - 100)

					len = can_print_rcvlist(page, len,

								&d->rx_sff[i],

				if (!hlist_empty(&d->rx_sff[i]))

					can_print_rcvlist(m, &d->rx_sff[i],

							  d->dev);

			}

		} else

			len += snprintf(page + len, PAGE_SIZE - len,

					"  (%s: no entry)\n", DNAME(d->dev));



		/* exit on end of buffer? */

		if (len > PAGE_SIZE - 100)

			break;

			seq_printf(m, "  (%s: no entry)\n", DNAME(d->dev));

	}

	rcu_read_unlock();



	len += snprintf(page + len, PAGE_SIZE - len, "\n");

	seq_putc(m, '\n');

	return 0;

}



	*eof = 1;

	return len;

static int can_rcvlist_sff_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, can_rcvlist_sff_proc_show, NULL);

}



static const struct file_operations can_rcvlist_sff_proc_fops = {

	.owner		= THIS_MODULE,

	.open		= can_rcvlist_sff_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



/*

 * proc utility functions

 */



static struct proc_dir_entry *can_create_proc_readentry(const char *name,

							mode_t mode,

							read_proc_t *read_proc,

							void *data)

{

	if (can_dir)

		return create_proc_read_entry(name, mode, can_dir, read_proc,

					      data);

	else

		return NULL;

}



static void can_remove_proc_readentry(const char *name)

{

	if (can_dir)
@@ -474,24 +455,24 @@ void can_init_proc(void) 
	}



	/* own procfs entries from the AF_CAN core */

	pde_version     = can_create_proc_readentry(CAN_PROC_VERSION, 0644,

					can_proc_read_version, NULL);

	pde_stats       = can_create_proc_readentry(CAN_PROC_STATS, 0644,

					can_proc_read_stats, NULL);

	pde_reset_stats = can_create_proc_readentry(CAN_PROC_RESET_STATS, 0644,

					can_proc_read_reset_stats, NULL);

	pde_rcvlist_err = can_create_proc_readentry(CAN_PROC_RCVLIST_ERR, 0644,

					can_proc_read_rcvlist, (void *)RX_ERR);

	pde_rcvlist_all = can_create_proc_readentry(CAN_PROC_RCVLIST_ALL, 0644,

					can_proc_read_rcvlist, (void *)RX_ALL);

	pde_rcvlist_fil = can_create_proc_readentry(CAN_PROC_RCVLIST_FIL, 0644,

					can_proc_read_rcvlist, (void *)RX_FIL);

	pde_rcvlist_inv = can_create_proc_readentry(CAN_PROC_RCVLIST_INV, 0644,

					can_proc_read_rcvlist, (void *)RX_INV);

	pde_rcvlist_eff = can_create_proc_readentry(CAN_PROC_RCVLIST_EFF, 0644,

					can_proc_read_rcvlist, (void *)RX_EFF);

	pde_rcvlist_sff = can_create_proc_readentry(CAN_PROC_RCVLIST_SFF, 0644,

					can_proc_read_rcvlist_sff, NULL);

	pde_version     = proc_create(CAN_PROC_VERSION, 0644, can_dir,

				      &can_version_proc_fops);

	pde_stats       = proc_create(CAN_PROC_STATS, 0644, can_dir,

				      &can_stats_proc_fops);

	pde_reset_stats = proc_create(CAN_PROC_RESET_STATS, 0644, can_dir,

				      &can_reset_stats_proc_fops);

	pde_rcvlist_err = proc_create_data(CAN_PROC_RCVLIST_ERR, 0644, can_dir,

					   &can_rcvlist_proc_fops, (void *)RX_ERR);

	pde_rcvlist_all = proc_create_data(CAN_PROC_RCVLIST_ALL, 0644, can_dir,

					   &can_rcvlist_proc_fops, (void *)RX_ALL);

	pde_rcvlist_fil = proc_create_data(CAN_PROC_RCVLIST_FIL, 0644, can_dir,

					   &can_rcvlist_proc_fops, (void *)RX_FIL);

	pde_rcvlist_inv = proc_create_data(CAN_PROC_RCVLIST_INV, 0644, can_dir,

					   &can_rcvlist_proc_fops, (void *)RX_INV);

	pde_rcvlist_eff = proc_create_data(CAN_PROC_RCVLIST_EFF, 0644, can_dir,

					   &can_rcvlist_proc_fops, (void *)RX_EFF);

	pde_rcvlist_sff = proc_create(CAN_PROC_RCVLIST_SFF, 0644, can_dir,

				      &can_rcvlist_sff_proc_fops);

}



/*