[linux-2.6-block.git] / net / atm / mpoa_proc.c


#ifdef CONFIG_PROC_FS
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
#include <linux/atmmpc.h>
#include <linux/atm.h>
#include "mpc.h"
#include "mpoa_caches.h"

/*
 * mpoa_proc.c: Implementation MPOA client's proc
 * file system statistics
 */

#if 1
#define dprintk printk   /* debug */
#else
#define dprintk(format,args...)
#endif

#define STAT_FILE_NAME "mpc"     /* Our statistic file's name */

extern struct mpoa_client *mpcs;
extern struct proc_dir_entry *atm_proc_root;  /* from proc.c. */

static int proc_mpc_open(struct inode *inode, struct file *file);
static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
			      size_t nbytes, loff_t *ppos);

static int parse_qos(const char *buff);

/*
 *   Define allowed FILE OPERATIONS
 */
static const struct file_operations mpc_file_operations = {
	.owner =	THIS_MODULE,
	.open =		proc_mpc_open,
	.read =		seq_read,
	.llseek =	seq_lseek,
	.write =	proc_mpc_write,
	.release =	seq_release,
};

/*
 * Returns the state of an ingress cache entry as a string
 */
static const char *ingress_state_string(int state){
	switch(state) {
	case INGRESS_RESOLVING:
		return "resolving  ";
		break;
	case INGRESS_RESOLVED:
		return "resolved   ";
		break;
	case INGRESS_INVALID:
		return "invalid    ";
		break;
	case INGRESS_REFRESHING:
		return "refreshing ";
		break;
	default:
	       return "";
	}
}

/*
 * Returns the state of an egress cache entry as a string
 */
static const char *egress_state_string(int state){
	switch(state) {
	case EGRESS_RESOLVED:
		return "resolved   ";
		break;
	case EGRESS_PURGE:
		return "purge      ";
		break;
	case EGRESS_INVALID:
		return "invalid    ";
		break;
	default:
	       return "";
	}
}

/*
 * FIXME: mpcs (and per-mpc lists) have no locking whatsoever.
 */

static void *mpc_start(struct seq_file *m, loff_t *pos)
{
	loff_t l = *pos;
	struct mpoa_client *mpc;

	if (!l--)
		return SEQ_START_TOKEN;
	for (mpc = mpcs; mpc; mpc = mpc->next)
		if (!l--)
			return mpc;
	return NULL;
}

static void *mpc_next(struct seq_file *m, void *v, loff_t *pos)
{
	struct mpoa_client *p = v;
	(*pos)++;
	return v == SEQ_START_TOKEN ? mpcs : p->next;
}

static void mpc_stop(struct seq_file *m, void *v)
{
}

/*
 * READING function - called when the /proc/atm/mpoa file is read from.
 */
static int mpc_show(struct seq_file *m, void *v)
{
	struct mpoa_client *mpc = v;
	unsigned char *temp;
	int i;
	in_cache_entry *in_entry;
	eg_cache_entry *eg_entry;
	struct timeval now;
	unsigned char ip_string[16];

	if (v == SEQ_START_TOKEN) {
		atm_mpoa_disp_qos(m);
		return 0;
	}

	seq_printf(m, "\nInterface %d:\n\n", mpc->dev_num);
	seq_printf(m, "Ingress Entries:\nIP address      State      Holding time  Packets fwded  VPI  VCI\n");
	do_gettimeofday(&now);

	for (in_entry = mpc->in_cache; in_entry; in_entry = in_entry->next) {
		temp = (unsigned char *)&in_entry->ctrl_info.in_dst_ip;
		sprintf(ip_string,"%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
		seq_printf(m, "%-16s%s%-14lu%-12u",
			      ip_string,
			      ingress_state_string(in_entry->entry_state),
			      in_entry->ctrl_info.holding_time-(now.tv_sec-in_entry->tv.tv_sec),
			      in_entry->packets_fwded);
		if (in_entry->shortcut)
			seq_printf(m, "   %-3d  %-3d",in_entry->shortcut->vpi,in_entry->shortcut->vci);
		seq_printf(m, "\n");
	}

	seq_printf(m, "\n");
	seq_printf(m, "Egress Entries:\nIngress MPC ATM addr\nCache-id        State      Holding time  Packets recvd  Latest IP addr   VPI VCI\n");
	for (eg_entry = mpc->eg_cache; eg_entry; eg_entry = eg_entry->next) {
		unsigned char *p = eg_entry->ctrl_info.in_MPC_data_ATM_addr;
		for(i = 0; i < ATM_ESA_LEN; i++)
			seq_printf(m, "%02x", p[i]);
		seq_printf(m, "\n%-16lu%s%-14lu%-15u",
			   (unsigned long)ntohl(eg_entry->ctrl_info.cache_id),
			   egress_state_string(eg_entry->entry_state),
			   (eg_entry->ctrl_info.holding_time-(now.tv_sec-eg_entry->tv.tv_sec)),
			   eg_entry->packets_rcvd);

		/* latest IP address */
		temp = (unsigned char *)&eg_entry->latest_ip_addr;
		sprintf(ip_string, "%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
		seq_printf(m, "%-16s", ip_string);

		if (eg_entry->shortcut)
			seq_printf(m, " %-3d %-3d",eg_entry->shortcut->vpi,eg_entry->shortcut->vci);
		seq_printf(m, "\n");
	}
	seq_printf(m, "\n");
	return 0;
}

static const struct seq_operations mpc_op = {
	.start =	mpc_start,
	.next =		mpc_next,
	.stop =		mpc_stop,
	.show =		mpc_show
};

static int proc_mpc_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &mpc_op);
}

static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
			      size_t nbytes, loff_t *ppos)
{
	char *page, *p;
	unsigned len;

	if (nbytes == 0)
		return 0;

	if (nbytes >= PAGE_SIZE)
		nbytes = PAGE_SIZE-1;

	page = (char *)__get_free_page(GFP_KERNEL);
	if (!page)
		return -ENOMEM;

	for (p = page, len = 0; len < nbytes; p++, len++) {
		if (get_user(*p, buff++)) {
			free_page((unsigned long)page);
			return -EFAULT;
		}
		if (*p == '\0' || *p == '\n')
			break;
	}

	*p = '\0';

	if (!parse_qos(page))
		printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);

	free_page((unsigned long)page);

	return len;
}

static int parse_qos(const char *buff)
{
	/* possible lines look like this
	 * add 130.230.54.142 tx=max_pcr,max_sdu rx=max_pcr,max_sdu
	 */
	unsigned char ip[4];
	int tx_pcr, tx_sdu, rx_pcr, rx_sdu;
	__be32 ipaddr;
	struct atm_qos qos;

	memset(&qos, 0, sizeof(struct atm_qos));

	if (sscanf(buff, "del %hhu.%hhu.%hhu.%hhu",
			ip, ip+1, ip+2, ip+3) == 4) {
		ipaddr = *(__be32 *)ip;
		return atm_mpoa_delete_qos(atm_mpoa_search_qos(ipaddr));
	}

	if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=tx",
			ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu) == 6) {
		rx_pcr = tx_pcr;
		rx_sdu = tx_sdu;
	} else if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=%d,%d",
		ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu, &rx_pcr, &rx_sdu) != 8)
		return 0;

	ipaddr = *(__be32 *)ip;
	qos.txtp.traffic_class = ATM_CBR;
	qos.txtp.max_pcr = tx_pcr;
	qos.txtp.max_sdu = tx_sdu;
	qos.rxtp.traffic_class = ATM_CBR;
	qos.rxtp.max_pcr = rx_pcr;
	qos.rxtp.max_sdu = rx_sdu;
	qos.aal = ATM_AAL5;
	dprintk("mpoa: mpoa_proc.c: parse_qos(): setting qos paramameters to tx=%d,%d rx=%d,%d\n",
		qos.txtp.max_pcr,
		qos.txtp.max_sdu,
		qos.rxtp.max_pcr,
		qos.rxtp.max_sdu
		);

	atm_mpoa_add_qos(ipaddr, &qos);
	return 1;
}

/*
 * INITIALIZATION function - called when module is initialized/loaded.
 */
int mpc_proc_init(void)
{
	struct proc_dir_entry *p;

	p = proc_create(STAT_FILE_NAME, 0, atm_proc_root, &mpc_file_operations);
	if (!p) {
		printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
		return -ENOMEM;
	}
	p->owner = THIS_MODULE;
	return 0;
}

/*
 * DELETING function - called when module is removed.
 */
void mpc_proc_clean(void)
{
	remove_proc_entry(STAT_FILE_NAME,atm_proc_root);
}


#endif /* CONFIG_PROC_FS */
Commit	Line	Data
1da177e4 LT	1
	2	#ifdef CONFIG_PROC_FS
	3	#include <linux/errno.h>
	4	#include <linux/kernel.h>
f7d57453	5	#include <linux/string.h>
1da177e4 LT	6	#include <linux/mm.h>
	7	#include <linux/module.h>
	8	#include <linux/proc_fs.h>
	9	#include <linux/time.h>
	10	#include <linux/seq_file.h>
	11	#include <asm/uaccess.h>
	12	#include <linux/atmmpc.h>
	13	#include <linux/atm.h>
	14	#include "mpc.h"
	15	#include "mpoa_caches.h"
	16
	17	/*
	18	* mpoa_proc.c: Implementation MPOA client's proc
f7d57453	19	* file system statistics
1da177e4 LT	20	*/
	21
	22	#if 1
	23	#define dprintk printk /* debug */
	24	#else
	25	#define dprintk(format,args...)
	26	#endif
	27
	28	#define STAT_FILE_NAME "mpc" /* Our statistic file's name */
	29
	30	extern struct mpoa_client *mpcs;
	31	extern struct proc_dir_entry atm_proc_root; / from proc.c. */
	32
	33	static int proc_mpc_open(struct inode inode, struct file file);
	34	static ssize_t proc_mpc_write(struct file file, const char __user buff,
f7d57453	35	size_t nbytes, loff_t *ppos);
1da177e4 LT	36
	37	static int parse_qos(const char *buff);
	38
	39	/*
	40	* Define allowed FILE OPERATIONS
	41	*/
9a32144e	42	static const struct file_operations mpc_file_operations = {
1da177e4 LT	43	.owner = THIS_MODULE,
	44	.open = proc_mpc_open,
	45	.read = seq_read,
	46	.llseek = seq_lseek,
	47	.write = proc_mpc_write,
	48	.release = seq_release,
	49	};
	50
	51	/*
	52	* Returns the state of an ingress cache entry as a string
	53	*/
	54	static const char *ingress_state_string(int state){
f7d57453	55	switch(state) {
1da177e4	56	case INGRESS_RESOLVING:
f7d57453	57	return "resolving ";
1da177e4 LT	58	break;
1da177e4 LT	59	case INGRESS_RESOLVED:
f7d57453	60	return "resolved ";
1da177e4 LT	61	break;
1da177e4 LT	62	case INGRESS_INVALID:
f7d57453	63	return "invalid ";
1da177e4 LT	64	break;
1da177e4 LT	65	case INGRESS_REFRESHING:
f7d57453	66	return "refreshing ";
1da177e4 LT	67	break;
	68	default:
	69	return "";
	70	}
	71	}
	72
	73	/*
	74	* Returns the state of an egress cache entry as a string
	75	*/
	76	static const char *egress_state_string(int state){
f7d57453	77	switch(state) {
1da177e4	78	case EGRESS_RESOLVED:
f7d57453	79	return "resolved ";
1da177e4 LT	80	break;
1da177e4 LT	81	case EGRESS_PURGE:
f7d57453	82	return "purge ";
1da177e4 LT	83	break;
1da177e4 LT	84	case EGRESS_INVALID:
f7d57453	85	return "invalid ";
1da177e4 LT	86	break;
	87	default:
	88	return "";
	89	}
	90	}
	91
	92	/*
	93	* FIXME: mpcs (and per-mpc lists) have no locking whatsoever.
	94	*/
	95
	96	static void mpc_start(struct seq_file m, loff_t *pos)
	97	{
	98	loff_t l = *pos;
	99	struct mpoa_client *mpc;
	100
	101	if (!l--)
	102	return SEQ_START_TOKEN;
	103	for (mpc = mpcs; mpc; mpc = mpc->next)
	104	if (!l--)
	105	return mpc;
	106	return NULL;
	107	}
	108
	109	static void mpc_next(struct seq_file m, void v, loff_t pos)
	110	{
	111	struct mpoa_client *p = v;
	112	(*pos)++;
	113	return v == SEQ_START_TOKEN ? mpcs : p->next;
	114	}
	115
	116	static void mpc_stop(struct seq_file m, void v)
	117	{
	118	}
	119
	120	/*
	121	* READING function - called when the /proc/atm/mpoa file is read from.
	122	*/
	123	static int mpc_show(struct seq_file m, void v)
	124	{
	125	struct mpoa_client *mpc = v;
	126	unsigned char *temp;
	127	int i;
	128	in_cache_entry *in_entry;
	129	eg_cache_entry *eg_entry;
	130	struct timeval now;
	131	unsigned char ip_string[16];
	132
	133	if (v == SEQ_START_TOKEN) {
	134	atm_mpoa_disp_qos(m);
	135	return 0;
	136	}
	137
f7d57453	138	seq_printf(m, "\nInterface %d:\n\n", mpc->dev_num);
1da177e4 LT	139	seq_printf(m, "Ingress Entries:\nIP address State Holding time Packets fwded VPI VCI\n");
	140	do_gettimeofday(&now);
	141
	142	for (in_entry = mpc->in_cache; in_entry; in_entry = in_entry->next) {
	143	temp = (unsigned char *)&in_entry->ctrl_info.in_dst_ip;
	144	sprintf(ip_string,"%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
	145	seq_printf(m, "%-16s%s%-14lu%-12u",
	146	ip_string,
	147	ingress_state_string(in_entry->entry_state),
	148	in_entry->ctrl_info.holding_time-(now.tv_sec-in_entry->tv.tv_sec),
	149	in_entry->packets_fwded);
	150	if (in_entry->shortcut)
	151	seq_printf(m, " %-3d %-3d",in_entry->shortcut->vpi,in_entry->shortcut->vci);
	152	seq_printf(m, "\n");
	153	}
	154
	155	seq_printf(m, "\n");
	156	seq_printf(m, "Egress Entries:\nIngress MPC ATM addr\nCache-id State Holding time Packets recvd Latest IP addr VPI VCI\n");
	157	for (eg_entry = mpc->eg_cache; eg_entry; eg_entry = eg_entry->next) {
	158	unsigned char *p = eg_entry->ctrl_info.in_MPC_data_ATM_addr;
	159	for(i = 0; i < ATM_ESA_LEN; i++)
	160	seq_printf(m, "%02x", p[i]);
	161	seq_printf(m, "\n%-16lu%s%-14lu%-15u",
	162	(unsigned long)ntohl(eg_entry->ctrl_info.cache_id),
	163	egress_state_string(eg_entry->entry_state),
	164	(eg_entry->ctrl_info.holding_time-(now.tv_sec-eg_entry->tv.tv_sec)),
	165	eg_entry->packets_rcvd);
f7d57453	166
1da177e4 LT	167	/* latest IP address */
	168	temp = (unsigned char *)&eg_entry->latest_ip_addr;
	169	sprintf(ip_string, "%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
	170	seq_printf(m, "%-16s", ip_string);
	171
	172	if (eg_entry->shortcut)
	173	seq_printf(m, " %-3d %-3d",eg_entry->shortcut->vpi,eg_entry->shortcut->vci);
	174	seq_printf(m, "\n");
	175	}
	176	seq_printf(m, "\n");
	177	return 0;
	178	}
	179
56b3d975	180	static const struct seq_operations mpc_op = {
1da177e4 LT	181	.start = mpc_start,
	182	.next = mpc_next,
	183	.stop = mpc_stop,
	184	.show = mpc_show
	185	};
	186
	187	static int proc_mpc_open(struct inode inode, struct file file)
	188	{
	189	return seq_open(file, &mpc_op);
	190	}
	191
	192	static ssize_t proc_mpc_write(struct file file, const char __user buff,
f7d57453	193	size_t nbytes, loff_t *ppos)
1da177e4	194	{
f7d57453	195	char page, p;
1da177e4 LT	196	unsigned len;
1da177e4 LT	197
f7d57453	198	if (nbytes == 0)
1da177e4 LT	199	return 0;
1da177e4 LT	200
f7d57453	201	if (nbytes >= PAGE_SIZE)
1da177e4 LT	202	nbytes = PAGE_SIZE-1;
1da177e4 LT	203
f7d57453 YH	204	page = (char *)__get_free_page(GFP_KERNEL);
f7d57453 YH	205	if (!page)
1da177e4 LT	206	return -ENOMEM;
1da177e4 LT	207
f7d57453 YH	208	for (p = page, len = 0; len < nbytes; p++, len++) {
f7d57453 YH	209	if (get_user(*p, buff++)) {
1da177e4 LT	210	free_page((unsigned long)page);
	211	return -EFAULT;
	212	}
f7d57453 YH	213	if (p == '\0' \|\| p == '\n')
	214	break;
	215	}
1da177e4	216
f7d57453	217	*p = '\0';
1da177e4 LT	218
1da177e4 LT	219	if (!parse_qos(page))
f7d57453 YH	220	printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
	221
	222	free_page((unsigned long)page);
1da177e4	223
f7d57453	224	return len;
1da177e4 LT	225	}
	226
	227	static int parse_qos(const char *buff)
	228	{
f7d57453 YH	229	/* possible lines look like this
	230	* add 130.230.54.142 tx=max_pcr,max_sdu rx=max_pcr,max_sdu
	231	*/
	232	unsigned char ip[4];
1da177e4	233	int tx_pcr, tx_sdu, rx_pcr, rx_sdu;
f7d57453 YH	234	__be32 ipaddr;
	235	struct atm_qos qos;
	236
	237	memset(&qos, 0, sizeof(struct atm_qos));
1da177e4 LT	238
	239	if (sscanf(buff, "del %hhu.%hhu.%hhu.%hhu",
	240	ip, ip+1, ip+2, ip+3) == 4) {
30d492da	241	ipaddr = (__be32 )ip;
1da177e4 LT	242	return atm_mpoa_delete_qos(atm_mpoa_search_qos(ipaddr));
	243	}
	244
	245	if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=tx",
	246	ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu) == 6) {
	247	rx_pcr = tx_pcr;
	248	rx_sdu = tx_sdu;
	249	} else if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=%d,%d",
	250	ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu, &rx_pcr, &rx_sdu) != 8)
	251	return 0;
	252
f7d57453	253	ipaddr = (__be32 )ip;
1da177e4 LT	254	qos.txtp.traffic_class = ATM_CBR;
	255	qos.txtp.max_pcr = tx_pcr;
	256	qos.txtp.max_sdu = tx_sdu;
	257	qos.rxtp.traffic_class = ATM_CBR;
	258	qos.rxtp.max_pcr = rx_pcr;
	259	qos.rxtp.max_sdu = rx_sdu;
f7d57453	260	qos.aal = ATM_AAL5;
1da177e4 LT	261	dprintk("mpoa: mpoa_proc.c: parse_qos(): setting qos paramameters to tx=%d,%d rx=%d,%d\n",
	262	qos.txtp.max_pcr,
	263	qos.txtp.max_sdu,
	264	qos.rxtp.max_pcr,
	265	qos.rxtp.max_sdu
	266	);
	267
	268	atm_mpoa_add_qos(ipaddr, &qos);
	269	return 1;
	270	}
	271
	272	/*
	273	* INITIALIZATION function - called when module is initialized/loaded.
	274	*/
	275	int mpc_proc_init(void)
	276	{
	277	struct proc_dir_entry *p;
	278
16e297b3	279	p = proc_create(STAT_FILE_NAME, 0, atm_proc_root, &mpc_file_operations);
1da177e4	280	if (!p) {
f7d57453 YH	281	printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
	282	return -ENOMEM;
	283	}
1da177e4 LT	284	p->owner = THIS_MODULE;
	285	return 0;
	286	}
	287
	288	/*
	289	* DELETING function - called when module is removed.
	290	*/
	291	void mpc_proc_clean(void)
	292	{
	293	remove_proc_entry(STAT_FILE_NAME,atm_proc_root);
	294	}
	295
	296
	297	#endif /* CONFIG_PROC_FS */
	298
	299
	300
	301
	302
	303