diff options
Diffstat (limited to 'net/can/proc.c')
| -rw-r--r-- | net/can/proc.c | 281 |
1 files changed, 131 insertions, 150 deletions
diff --git a/net/can/proc.c b/net/can/proc.c index 1463653dbe34..9b9ad29be567 100644 --- a/net/can/proc.c +++ b/net/can/proc.c @@ -196,8 +196,8 @@ void can_stat_update(unsigned long data) * */ -static int can_print_rcvlist(char *page, int len, struct hlist_head *rx_list, - struct net_device *dev) +static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list, + struct net_device *dev) { struct receiver *r; struct hlist_node *n; @@ -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], - d->dev); + 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); } /* |