Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 | #include <linux/config.h> #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 <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 ssize_t proc_mpc_read(struct file *file, char *buff, size_t count, loff_t *pos); static ssize_t proc_mpc_write(struct file *file, const char *buff, size_t nbytes, loff_t *ppos); static int parse_qos(const char *buff, int len); /* * Define allowed FILE OPERATIONS */ static struct file_operations mpc_file_operations = { read: proc_mpc_read, write: proc_mpc_write, }; static int print_header(char *buff,struct mpoa_client *mpc){ if(mpc != NULL){ return sprintf(buff,"\nInterface %d:\n\n",mpc->dev_num); } return 0; } /* * 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 ""; } } /* * READING function - called when the /proc/atm/mpoa file is read from. */ static ssize_t proc_mpc_read(struct file *file, char *buff, size_t count, loff_t *pos){ unsigned long page = 0; unsigned char *temp; ssize_t length = 0; int i = 0; struct mpoa_client *mpc = mpcs; in_cache_entry *in_entry; eg_cache_entry *eg_entry; struct timeval now; unsigned char ip_string[16]; if(count == 0) return 0; page = get_free_page(GFP_KERNEL); if(!page) return -ENOMEM; atm_mpoa_disp_qos((char *)page, &length); while(mpc != NULL){ length += print_header((char *)page + length, mpc); length += sprintf((char *)page + length,"Ingress Entries:\nIP address State Holding time Packets fwded VPI VCI\n"); in_entry = mpc->in_cache; do_gettimeofday(&now); while(in_entry != NULL){ 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]); length += sprintf((char *)page + length,"%-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) length += sprintf((char *)page + length," %-3d %-3d",in_entry->shortcut->vpi,in_entry->shortcut->vci); length += sprintf((char *)page + length,"\n"); in_entry = in_entry->next; } length += sprintf((char *)page + length,"\n"); eg_entry = mpc->eg_cache; length += sprintf((char *)page + length,"Egress Entries:\nIngress MPC ATM addr\nCache-id State Holding time Packets recvd Latest IP addr VPI VCI\n"); while(eg_entry != NULL){ for(i=0;i<ATM_ESA_LEN;i++){ length += sprintf((char *)page + length,"%02x",eg_entry->ctrl_info.in_MPC_data_ATM_addr[i]);} length += sprintf((char *)page + length,"\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]); length += sprintf((char *)page + length, "%-16s", ip_string); if(eg_entry->shortcut) length += sprintf((char *)page + length," %-3d %-3d",eg_entry->shortcut->vpi,eg_entry->shortcut->vci); length += sprintf((char *)page + length,"\n"); eg_entry = eg_entry->next; } length += sprintf((char *)page + length,"\n"); mpc = mpc->next; } if (*pos >= length) length = 0; else { if ((count + *pos) > length) count = length - *pos; if (copy_to_user(buff, (char *)page , count)) { free_page(page); return -EFAULT; } *pos += count; } free_page(page); return length; } static ssize_t proc_mpc_write(struct file *file, const char *buff, size_t nbytes, loff_t *ppos) { int incoming, error, retval; char *page, c; const char *tmp; if (nbytes == 0) return 0; if (nbytes >= PAGE_SIZE) nbytes = PAGE_SIZE-1; error = verify_area(VERIFY_READ, buff, nbytes); if (error) return error; page = (char *)__get_free_page(GFP_KERNEL); if (page == NULL) return -ENOMEM; incoming = 0; tmp = buff; while(incoming < nbytes){ if (get_user(c, tmp++)) return -EFAULT; incoming++; if (c == '\0' || c == '\n') break; } retval = copy_from_user(page, buff, incoming); if (retval != 0) { printk("mpoa: proc_mpc_write: copy_from_user() failed\n"); return -EFAULT; } *ppos += incoming; page[incoming] = '\0'; retval = parse_qos(page, incoming); if (retval == 0) printk("mpoa: proc_mpc_write: could not parse '%s'\n", page); free_page((unsigned long)page); return nbytes; } static int parse_qos(const char *buff, int len) { /* possible lines look like this * add 130.230.54.142 tx=max_pcr,max_sdu rx=max_pcr,max_sdu */ int pos, i; uint32_t ipaddr; unsigned char ip[4]; char cmd[4], temp[256]; const char *tmp, *prev; struct atm_qos qos; int value[5]; memset(&qos, 0, sizeof(struct atm_qos)); strncpy(cmd, buff, 3); if( strncmp(cmd,"add", 3) && strncmp(cmd,"del", 3)) return 0; /* not add or del */ pos = 4; /* next parse ip */ prev = buff + pos; for (i = 0; i < 3; i++) { tmp = strchr(prev, '.'); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); ip[i] = (char)simple_strtoul(temp, NULL, 0); tmp ++; prev = tmp; } tmp = strchr(prev, ' '); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); ip[i] = (char)simple_strtoul(temp, NULL, 0); ipaddr = *(uint32_t *)ip; if(!strncmp(cmd, "del", 3)) return atm_mpoa_delete_qos(atm_mpoa_search_qos(ipaddr)); /* next transmit values */ tmp = strstr(buff, "tx="); if(tmp == NULL) return 0; tmp += 3; prev = tmp; for( i = 0; i < 1; i++){ tmp = strchr(prev, ','); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); value[i] = (int)simple_strtoul(temp, NULL, 0); tmp ++; prev = tmp; } tmp = strchr(prev, ' '); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); value[i] = (int)simple_strtoul(temp, NULL, 0); qos.txtp.traffic_class = ATM_CBR; qos.txtp.max_pcr = value[0]; qos.txtp.max_sdu = value[1]; /* next receive values */ tmp = strstr(buff, "rx="); if(tmp == NULL) return 0; if (strstr(buff, "rx=tx")) { /* rx == tx */ qos.rxtp.traffic_class = qos.txtp.traffic_class; qos.rxtp.max_pcr = qos.txtp.max_pcr; qos.rxtp.max_cdv = qos.txtp.max_cdv; qos.rxtp.max_sdu = qos.txtp.max_sdu; } else { tmp += 3; prev = tmp; for( i = 0; i < 1; i++){ tmp = strchr(prev, ','); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); value[i] = (int)simple_strtoul(temp, NULL, 0); tmp ++; prev = tmp; } tmp = strchr(prev, '\0'); if (tmp == NULL) return 0; memset(temp, '\0', 256); memcpy(temp, prev, tmp-prev); value[i] = (int)simple_strtoul(temp, NULL, 0); qos.rxtp.traffic_class = ATM_CBR; qos.rxtp.max_pcr = value[0]; qos.rxtp.max_sdu = value[1]; } 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 = create_proc_entry(STAT_FILE_NAME, 0, atm_proc_root); if (!p) { printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME); return -ENOMEM; } p->proc_fops = &mpc_file_operations; 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 */ |