1
2#ifdef CONFIG_PROC_FS
3#include <linux/errno.h>
4#include <linux/kernel.h>
5#include <linux/string.h>
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
19
20
21
22#if 1
23#define dprintk printk
24#else
25#define dprintk(format,args...)
26#endif
27
28#define STAT_FILE_NAME "mpc"
29
30extern struct mpoa_client *mpcs;
31extern struct proc_dir_entry *atm_proc_root;
32
33static int proc_mpc_open(struct inode *inode, struct file *file);
34static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
35 size_t nbytes, loff_t *ppos);
36
37static int parse_qos(const char *buff);
38
39
40
41
42static const struct file_operations mpc_file_operations = {
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
53
54static const char *ingress_state_string(int state){
55 switch(state) {
56 case INGRESS_RESOLVING:
57 return "resolving ";
58 break;
59 case INGRESS_RESOLVED:
60 return "resolved ";
61 break;
62 case INGRESS_INVALID:
63 return "invalid ";
64 break;
65 case INGRESS_REFRESHING:
66 return "refreshing ";
67 break;
68 default:
69 return "";
70 }
71}
72
73
74
75
76static const char *egress_state_string(int state){
77 switch(state) {
78 case EGRESS_RESOLVED:
79 return "resolved ";
80 break;
81 case EGRESS_PURGE:
82 return "purge ";
83 break;
84 case EGRESS_INVALID:
85 return "invalid ";
86 break;
87 default:
88 return "";
89 }
90}
91
92
93
94
95
96static 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
109static 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
116static void mpc_stop(struct seq_file *m, void *v)
117{
118}
119
120
121
122
123static 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
138 seq_printf(m, "\nInterface %d:\n\n", mpc->dev_num);
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);
166
167
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
180static const struct seq_operations mpc_op = {
181 .start = mpc_start,
182 .next = mpc_next,
183 .stop = mpc_stop,
184 .show = mpc_show
185};
186
187static int proc_mpc_open(struct inode *inode, struct file *file)
188{
189 return seq_open(file, &mpc_op);
190}
191
192static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
193 size_t nbytes, loff_t *ppos)
194{
195 char *page, *p;
196 unsigned len;
197
198 if (nbytes == 0)
199 return 0;
200
201 if (nbytes >= PAGE_SIZE)
202 nbytes = PAGE_SIZE-1;
203
204 page = (char *)__get_free_page(GFP_KERNEL);
205 if (!page)
206 return -ENOMEM;
207
208 for (p = page, len = 0; len < nbytes; p++, len++) {
209 if (get_user(*p, buff++)) {
210 free_page((unsigned long)page);
211 return -EFAULT;
212 }
213 if (*p == '\0' || *p == '\n')
214 break;
215 }
216
217 *p = '\0';
218
219 if (!parse_qos(page))
220 printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
221
222 free_page((unsigned long)page);
223
224 return len;
225}
226
227static int parse_qos(const char *buff)
228{
229
230
231
232 unsigned char ip[4];
233 int tx_pcr, tx_sdu, rx_pcr, rx_sdu;
234 __be32 ipaddr;
235 struct atm_qos qos;
236
237 memset(&qos, 0, sizeof(struct atm_qos));
238
239 if (sscanf(buff, "del %hhu.%hhu.%hhu.%hhu",
240 ip, ip+1, ip+2, ip+3) == 4) {
241 ipaddr = *(__be32 *)ip;
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
253 ipaddr = *(__be32 *)ip;
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;
260 qos.aal = ATM_AAL5;
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
274
275int mpc_proc_init(void)
276{
277 struct proc_dir_entry *p;
278
279 p = proc_create(STAT_FILE_NAME, 0, atm_proc_root, &mpc_file_operations);
280 if (!p) {
281 printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
282 return -ENOMEM;
283 }
284 return 0;
285}
286
287
288
289
290void mpc_proc_clean(void)
291{
292 remove_proc_entry(STAT_FILE_NAME,atm_proc_root);
293}
294
295
296#endif
297
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299
300
301
302
303
