static int do_tunnels_list(struct ip6_tnl_parm *p) { char buf[512]; int err = -1; FILE *fp = fopen("/proc/net/dev", "r"); if (fp == NULL) { perror("fopen"); goto end; } /* skip two lines at the begenning of the file */ if (!fgets(buf, sizeof(buf), fp) || !fgets(buf, sizeof(buf), fp)) { fprintf(stderr, "/proc/net/dev read error\n"); return -1; } while (fgets(buf, sizeof(buf), fp) != NULL) { char name[IFNAMSIZ]; int index, type; unsigned long rx_bytes, rx_packets, rx_errs, rx_drops, rx_fifo, rx_frame, tx_bytes, tx_packets, tx_errs, tx_drops, tx_fifo, tx_colls, tx_carrier, rx_multi; struct ip6_tnl_parm p1; char *ptr; buf[sizeof(buf) - 1] = '\0'; if ((ptr = strchr(buf, ':')) == NULL || (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { fprintf(stderr, "Wrong format of /proc/net/dev. Sorry.\n"); goto end; } if (sscanf(ptr, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld", &rx_bytes, &rx_packets, &rx_errs, &rx_drops, &rx_fifo, &rx_frame, &rx_multi, &tx_bytes, &tx_packets, &tx_errs, &tx_drops, &tx_fifo, &tx_colls, &tx_carrier) != 14) continue; if (p->name[0] && strcmp(p->name, name)) continue; index = ll_name_to_index(name); if (index == 0) continue; type = ll_index_to_type(index); if (type == -1) { fprintf(stderr, "Failed to get type of [%s]\n", name); continue; } if (type != ARPHRD_TUNNEL6) continue; memset(&p1, 0, sizeof(p1)); ip6_tnl_parm_init(&p1, 0); strcpy(p1.name, name); p1.link = ll_name_to_index(p1.name); if (p1.link == 0) continue; if (tnl_get_ioctl(p1.name, &p1)) continue; if (!ip6_tnl_parm_match(p, &p1)) continue; print_tunnel(&p1); if (show_stats) { printf("%s", _SL_); printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_); printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s", rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_); printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_); printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld", tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops); } printf("\n"); } err = 0; end: if (fp) fclose(fp); return err; }
static int do_tunnels_list(struct ip6_tnl_parm2 *p) { char buf[512]; int err = -1; FILE *fp = fopen("/proc/net/dev", "r"); if (fp == NULL) { perror("fopen"); return -1; } /* skip two lines at the begenning of the file */ if (!fgets(buf, sizeof(buf), fp) || !fgets(buf, sizeof(buf), fp)) { fprintf(stderr, "/proc/net/dev read error\n"); goto end; } while (fgets(buf, sizeof(buf), fp) != NULL) { char name[IFNAMSIZ]; int index, type; struct ip6_tnl_parm2 p1 = {}; char *ptr; buf[sizeof(buf) - 1] = '\0'; if ((ptr = strchr(buf, ':')) == NULL || (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n"); goto end; } if (p->name[0] && strcmp(p->name, name)) continue; index = ll_name_to_index(name); if (index == 0) continue; type = ll_index_to_type(index); if (type == -1) { fprintf(stderr, "Failed to get type of \"%s\"\n", name); continue; } if (type != ARPHRD_TUNNEL6 && type != ARPHRD_IP6GRE) continue; ip6_tnl_parm_init(&p1, 0); if (type == ARPHRD_IP6GRE) p1.proto = IPPROTO_GRE; strcpy(p1.name, name); p1.link = ll_name_to_index(p1.name); if (p1.link == 0) continue; if (tnl_get_ioctl(p1.name, &p1)) continue; if (!ip6_tnl_parm_match(p, &p1)) continue; print_tunnel(&p1); if (show_stats) tnl_print_stats(ptr); printf("\n"); } err = 0; end: fclose(fp); return err; }