313 lines
7.2 KiB
C
313 lines
7.2 KiB
C
|
#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
|
||
|
|
|
||
|
|
#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 <linux/uaccess.h>
|
||
|
|
#include <linux/atmmpc.h>
|
||
|
|
#include <linux/atm.h>
|
||
|
|
#include <linux/gfp.h>
|
||
|
|
#include "mpc.h"
|
||
|
|
#include "mpoa_caches.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* mpoa_proc.c: Implementation MPOA client's proc
|
||
|
|
* file system statistics
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if 1
|
||
|
|
#define dprintk(format, args...) \
|
||
|
|
printk(KERN_DEBUG "mpoa:%s: " format, __FILE__, ##args) /* debug */
|
||
|
|
#else
|
||
|
|
#define dprintk(format, args...) \
|
||
|
|
do { if (0) \
|
||
|
|
printk(KERN_DEBUG "mpoa:%s: " format, __FILE__, ##args);\
|
||
|
|
} while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#define ddprintk(format, args...) \
|
||
|
|
printk(KERN_DEBUG "mpoa:%s: " format, __FILE__, ##args) /* debug */
|
||
|
|
#else
|
||
|
|
#define ddprintk(format, args...) \
|
||
|
|
do { if (0) \
|
||
|
|
printk(KERN_DEBUG "mpoa:%s: " format, __FILE__, ##args);\
|
||
|
|
} while (0)
|
||
|
|
#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 ";
|
||
|
|
case INGRESS_RESOLVED:
|
||
|
|
return "resolved ";
|
||
|
|
case INGRESS_INVALID:
|
||
|
|
return "invalid ";
|
||
|
|
case INGRESS_REFRESHING:
|
||
|
|
return "refreshing ";
|
||
|
|
}
|
||
|
|
|
||
|
|
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 ";
|
||
|
|
case EGRESS_PURGE:
|
||
|
|
return "purge ";
|
||
|
|
case EGRESS_INVALID:
|
||
|
|
return "invalid ";
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
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) {
|
||
|
|
sprintf(ip_string, "%pI4", &in_entry->ctrl_info.in_dst_ip);
|
||
|
|
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 */
|
||
|
|
sprintf(ip_string, "%pI4", &eg_entry->latest_ip_addr);
|
||
|
|
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 int 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("parse_qos(): setting qos parameters 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) {
|
||
|
|
pr_err("Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
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 */
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|