| /* |
| * Interface MIB architecture support |
| * |
| * $Id$ |
| */ |
| #include <net-snmp/net-snmp-config.h> |
| #include <net-snmp/net-snmp-includes.h> |
| |
| #ifdef HAVE_LINUX_ETHTOOL_H |
| #include <linux/types.h> |
| typedef __u64 u64; /* hack, so we may include kernel's ethtool.h */ |
| typedef __u32 u32; /* ditto */ |
| typedef __u16 u16; /* ditto */ |
| typedef __u8 u8; /* ditto */ |
| #include <linux/ethtool.h> |
| #endif /* HAVE_LINUX_ETHTOOL_H */ |
| |
| #include "mibII/mibII_common.h" |
| #include "if-mib/ifTable/ifTable_constants.h" |
| |
| #include <net-snmp/agent/net-snmp-agent-includes.h> |
| |
| #if HAVE_SYS_IOCTL_H |
| #include <sys/ioctl.h> |
| #else |
| #error "linux should have sys/ioctl header" |
| #endif |
| |
| #include <net-snmp/data_access/interface.h> |
| #include <net-snmp/data_access/ipaddress.h> |
| #include "if-mib/data_access/interface.h" |
| #include "mibgroup/util_funcs.h" |
| #include "interface_ioctl.h" |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <errno.h> |
| |
| #include <linux/sockios.h> |
| #include <linux/if_ether.h> |
| |
| #ifndef IF_NAMESIZE |
| #define IF_NAMESIZE 16 |
| #endif |
| |
| #ifndef SIOCGMIIPHY |
| #define SIOCGMIIPHY 0x8947 |
| #endif |
| |
| #ifndef SIOCGMIIREG |
| #define SIOCGMIIREG 0x8948 |
| #endif |
| |
| #ifdef NETSNMP_ENABLE_IPV6 |
| #if defined(HAVE_LINUX_RTNETLINK_H) |
| #include <linux/rtnetlink.h> |
| #ifdef RTMGRP_IPV6_PREFIX |
| #define SUPPORT_PREFIX_FLAGS 1 |
| #endif /* RTMGRP_IPV6_PREFIX */ |
| #endif /* HAVE_LINUX_RTNETLINK_H */ |
| #endif /* NETSNMP_ENABLE_IPV6 */ |
| unsigned long long |
| netsnmp_linux_interface_get_if_speed(int fd, const char *name, |
| unsigned long long defaultspeed); |
| #ifdef HAVE_LINUX_ETHTOOL_H |
| unsigned long long |
| netsnmp_linux_interface_get_if_speed_mii(int fd, const char *name, |
| unsigned long long defaultspeed); |
| #endif |
| |
| #define PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME_MS "/proc/sys/net/ipv%d/neigh/%s/retrans_time_ms" |
| #define PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME "/proc/sys/net/ipv%d/neigh/%s/retrans_time" |
| static const char *proc_sys_retrans_time; |
| static unsigned short retrans_time_factor = 1; |
| |
| |
| #define PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME_MS "/proc/sys/net/ipv%d/neigh/%s/base_reachable_time_ms" |
| #define PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME "/proc/sys/net/ipv%d/neigh/%s/base_reachable_time" |
| static const char *proc_sys_basereachable_time; |
| static unsigned short basereachable_time_ms = 0; |
| #ifdef SUPPORT_PREFIX_FLAGS |
| prefix_cbx *prefix_head_list = NULL; |
| netsnmp_prefix_listen_info list_info; |
| #define IF_PREFIX_ONLINK 0x01 |
| #define IF_PREFIX_AUTOCONF 0x02 |
| |
| int netsnmp_prefix_listen(void); |
| #endif |
| |
| |
| void |
| netsnmp_arch_interface_init(void) |
| { |
| /* |
| * Check which retransmit time interface is available |
| */ |
| char proc_path[ 64+IF_NAMESIZE]; |
| char proc_path2[64+IF_NAMESIZE]; |
| struct stat st; |
| |
| snprintf(proc_path, sizeof(proc_path), |
| PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME_MS, 6, "default"); |
| snprintf(proc_path2, sizeof(proc_path2), |
| PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME_MS, 4, "default"); |
| |
| if ((stat(proc_path, &st) == 0) || (stat(proc_path2, &st) == 0)) { |
| proc_sys_retrans_time = PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME_MS; |
| } else { |
| proc_sys_retrans_time = PROC_SYS_NET_IPVx_NEIGH_RETRANS_TIME; |
| retrans_time_factor = 10; |
| } |
| |
| snprintf(proc_path, sizeof(proc_path), PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME_MS, 6, "default"); |
| snprintf(proc_path2, sizeof(proc_path), PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME, 4, "default"); |
| |
| if ((stat(proc_path, &st) == 0) || (stat(proc_path2, &st) == 0)) { |
| proc_sys_basereachable_time = PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME_MS; |
| basereachable_time_ms = 1; |
| } |
| else { |
| proc_sys_basereachable_time = PROC_SYS_NET_IPVx_BASE_REACHABLE_TIME; |
| } |
| |
| #ifdef SUPPORT_PREFIX_FLAGS |
| list_info.list_head = &prefix_head_list; |
| netsnmp_prefix_listen(); |
| #endif |
| } |
| |
| /* |
| * find the ifIndex for an interface name |
| * NOTE: The Linux version is not efficient for large numbers of calls. |
| * consider using netsnmp_access_interface_ioctl_ifindex_get() |
| * for loops which need to look up a lot of indexes. |
| * |
| * @retval 0 : no index found |
| * @retval >0: ifIndex for interface |
| */ |
| oid |
| netsnmp_arch_interface_index_find(const char *name) |
| { |
| return netsnmp_access_interface_ioctl_ifindex_get(-1, name); |
| } |
| |
| |
| /* |
| * check for ipv6 addresses |
| */ |
| void |
| _arch_interface_has_ipv6(oid if_index, u_int *flags, |
| netsnmp_container *addr_container) |
| { |
| #ifdef NETSNMP_ENABLE_IPV6 |
| netsnmp_ipaddress_entry *addr_entry = NULL; |
| netsnmp_iterator *addr_it = NULL; |
| u_int addr_container_flags = 0; /* must init to 0 */ |
| #endif |
| |
| if (NULL == flags) |
| return; |
| |
| *flags &= ~NETSNMP_INTERFACE_FLAGS_HAS_IPV6; |
| |
| #ifdef NETSNMP_ENABLE_IPV6 |
| /* |
| * get ipv6 addresses |
| */ |
| if (NULL == addr_container) { |
| /* |
| * we only care about ipv6, if we need to allocate our own |
| * temporary container. set the flags (which we also use later |
| * to determine if we need to free the container). |
| */ |
| addr_container_flags = NETSNMP_ACCESS_IPADDRESS_LOAD_IPV6_ONLY; |
| addr_container = |
| netsnmp_access_ipaddress_container_load(NULL, |
| addr_container_flags); |
| if (NULL == addr_container) { |
| DEBUGMSGTL(("access:ifcontainer", |
| "couldn't get ip addresses container\n")); |
| return; |
| } |
| } |
| else { |
| /* |
| * addr_container flags must be 0, so we don't release the |
| * user's container. |
| */ |
| netsnmp_assert(0 == addr_container_flags); |
| } |
| |
| |
| /* |
| * get an ipaddress container iterator, and look for ipv6 addrs |
| */ |
| addr_it = CONTAINER_ITERATOR(addr_container); |
| if (NULL == addr_it) { |
| DEBUGMSGTL(("access:ifcontainer", |
| "couldn't get ip addresses iterator\n")); |
| if (0!=addr_container_flags) |
| netsnmp_access_ipaddress_container_free(addr_container, 0); |
| return; |
| } |
| |
| addr_entry = ITERATOR_FIRST(addr_it); |
| for( ; addr_entry ; addr_entry = ITERATOR_NEXT(addr_it) ) { |
| /* |
| * skip non matching indexes and ipv4 addresses |
| */ |
| if ((if_index != addr_entry->if_index) || |
| (4 == addr_entry->ia_address_len)) |
| continue; |
| |
| /* |
| * found one! no need to keep looking, set the flag and bail |
| */ |
| *flags |= NETSNMP_INTERFACE_FLAGS_HAS_IPV6; |
| break; |
| } |
| |
| /* |
| * make mama proud and clean up after ourselves |
| */ |
| ITERATOR_RELEASE(addr_it); |
| if (0!=addr_container_flags) |
| netsnmp_access_ipaddress_container_free(addr_container, 0); |
| #endif |
| } |
| |
| /** |
| * @internal |
| */ |
| static void |
| _arch_interface_flags_v4_get(netsnmp_interface_entry *entry) |
| { |
| FILE *fin; |
| char line[256]; |
| |
| /* |
| * get the retransmit time |
| */ |
| snprintf(line,sizeof(line), proc_sys_retrans_time, 4, |
| entry->name); |
| if (!(fin = fopen(line, "r"))) { |
| DEBUGMSGTL(("access:interface", |
| "Failed to open %s\n", line)); |
| } |
| else { |
| if (fgets(line, sizeof(line), fin)) { |
| entry->retransmit_v4 = atoi(line) * retrans_time_factor; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V4_RETRANSMIT; |
| } |
| fclose(fin); |
| } |
| } |
| |
| |
| #ifdef NETSNMP_ENABLE_IPV6 |
| /** |
| * @internal |
| */ |
| static void |
| _arch_interface_flags_v6_get(netsnmp_interface_entry *entry) |
| { |
| FILE *fin; |
| char line[256]; |
| |
| /* |
| * get the retransmit time |
| */ |
| snprintf(line,sizeof(line), proc_sys_retrans_time, 6, |
| entry->name); |
| if (!(fin = fopen(line, "r"))) { |
| DEBUGMSGTL(("access:interface", |
| "Failed to open %s\n", line)); |
| } |
| else { |
| if (fgets(line, sizeof(line), fin)) { |
| entry->retransmit_v6 = atoi(line) * retrans_time_factor; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V6_RETRANSMIT; |
| } |
| fclose(fin); |
| } |
| |
| /* |
| * get the forwarding status |
| */ |
| snprintf(line, sizeof(line), "/proc/sys/net/ipv6/conf/%s/forwarding", |
| entry->name); |
| if (!(fin = fopen(line, "r"))) { |
| DEBUGMSGTL(("access:interface", |
| "Failed to open %s\n", line)); |
| } |
| else { |
| if (fgets(line, sizeof(line), fin)) { |
| entry->forwarding_v6 = atoi(line); |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V6_FORWARDING; |
| } |
| fclose(fin); |
| } |
| |
| /* |
| * get the reachable time |
| */ |
| snprintf(line, sizeof(line), proc_sys_basereachable_time, 6, entry->name); |
| if (!(fin = fopen(line, "r"))) { |
| DEBUGMSGTL(("access:interface", |
| "Failed to open %s\n", line)); |
| } |
| else { |
| if (fgets(line, sizeof(line), fin)) { |
| if (basereachable_time_ms) { |
| entry->reachable_time = atoi(line); /* millisec */ |
| } else { |
| entry->reachable_time = atoi(line)*1000; /* sec to millisec */ |
| } |
| |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V6_REACHABLE; |
| } |
| fclose(fin); |
| } |
| } |
| #endif /* NETSNMP_ENABLE_IPV6 */ |
| |
| /** |
| * @internal |
| */ |
| static int |
| _parse_stats(netsnmp_interface_entry *entry, char *stats, int expected) |
| { |
| /* |
| * scanline_2_2: |
| * [ IN ] |
| * byte pkts errs drop fifo frame cmprs mcst | |
| * [ OUT ] |
| * byte pkts errs drop fifo colls carrier compressed |
| */ |
| #ifdef SCNuMAX |
| uintmax_t rec_pkt, rec_oct, rec_err, rec_drop, rec_mcast; |
| uintmax_t snd_pkt, snd_oct, snd_err, snd_drop, coll; |
| const char *scan_line_2_2 = |
| "%" SCNuMAX " %" SCNuMAX " %" SCNuMAX " %" SCNuMAX |
| " %*" SCNuMAX " %*" SCNuMAX " %*" SCNuMAX " %" SCNuMAX |
| " %" SCNuMAX " %" SCNuMAX " %" SCNuMAX " %" SCNuMAX |
| " %*" SCNuMAX " %" SCNuMAX; |
| const char *scan_line_2_0 = |
| "%" SCNuMAX " %" SCNuMAX " %*" SCNuMAX " %*" SCNuMAX |
| " %*" SCNuMAX " %" SCNuMAX " %" SCNuMAX " %*" SCNuMAX |
| " %*" SCNuMAX " %" SCNuMAX; |
| #else |
| unsigned long rec_pkt, rec_oct, rec_err, rec_drop, rec_mcast; |
| unsigned long snd_pkt, snd_oct, snd_err, snd_drop, coll; |
| const char *scan_line_2_2 = |
| "%lu %lu %lu %lu %*lu %*lu %*lu %lu %lu %lu %lu %lu %*lu %lu"; |
| const char *scan_line_2_0 = |
| "%lu %lu %*lu %*lu %*lu %lu %lu %*lu %*lu %lu"; |
| #endif |
| static const char *scan_line_to_use = NULL; |
| int scan_count; |
| |
| if (10 == expected) |
| scan_line_to_use = scan_line_2_2; |
| else { |
| netsnmp_assert(5 == expected); |
| scan_line_to_use = scan_line_2_0; |
| } |
| |
| while (*stats == ' ') |
| stats++; |
| |
| if ((*stats == 'N') && |
| (0 == strncmp(stats, "No statistics available", |
| strlen("No statistics available")))) |
| return -1; |
| |
| /* |
| * Now parse the rest of the line (i.e. starting from 'stats') |
| * to extract the relevant statistics, and populate |
| * data structure accordingly. |
| * Use the entry flags field to indicate which counters are valid |
| */ |
| rec_pkt = rec_oct = rec_err = rec_drop = rec_mcast = 0; |
| snd_pkt = snd_oct = snd_err = snd_drop = coll = 0; |
| if (scan_line_to_use == scan_line_2_2) { |
| scan_count = sscanf(stats, scan_line_to_use, |
| &rec_oct, &rec_pkt, &rec_err, &rec_drop, &rec_mcast, |
| &snd_oct, &snd_pkt, &snd_err, &snd_drop, |
| &coll); |
| if (scan_count == expected) { |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_BYTES; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_DROPS; |
| /* |
| * 2.4 kernel includes a single multicast (input) counter? |
| */ |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_MCAST_PKTS; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_SPEED; |
| #ifdef SCNuMAX /* XXX - should be flag for 64-bit variables */ |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_BYTES; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_PACKETS; |
| #endif |
| } |
| } else { |
| scan_count = sscanf(stats, scan_line_to_use, |
| &rec_pkt, &rec_err, |
| &snd_pkt, &snd_err, &coll); |
| if (scan_count == expected) { |
| entry->ns_flags &= ~NETSNMP_INTERFACE_FLAGS_HAS_MCAST_PKTS; |
| rec_oct = rec_drop = 0; |
| snd_oct = snd_drop = 0; |
| } |
| } |
| if(scan_count != expected) { |
| snmp_log(LOG_ERR, |
| "error scanning interface data (expected %d, got %d)\n", |
| expected, scan_count); |
| return scan_count; |
| } |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_ACTIVE; |
| |
| /* |
| * linux previous to 1.3.~13 may miss transmitted loopback pkts: |
| */ |
| if (!strcmp(entry->name, "lo") && rec_pkt > 0 && !snd_pkt) |
| snd_pkt = rec_pkt; |
| |
| /* |
| * subtract out multicast packets from rec_pkt before |
| * we store it as unicast counter. |
| */ |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_CALCULATE_UCAST; |
| entry->stats.ibytes.low = rec_oct & 0xffffffff; |
| entry->stats.iall.low = rec_pkt & 0xffffffff; |
| entry->stats.imcast.low = rec_mcast & 0xffffffff; |
| entry->stats.obytes.low = snd_oct & 0xffffffff; |
| entry->stats.oucast.low = snd_pkt & 0xffffffff; |
| #ifdef SCNuMAX /* XXX - should be flag for 64-bit variables */ |
| entry->stats.ibytes.high = rec_oct >> 32; |
| entry->stats.iall.high = rec_pkt >> 32; |
| entry->stats.imcast.high = rec_mcast >> 32; |
| entry->stats.obytes.high = snd_oct >> 32; |
| entry->stats.oucast.high = snd_pkt >> 32; |
| #endif |
| entry->stats.ierrors = rec_err; |
| entry->stats.idiscards = rec_drop; |
| entry->stats.oerrors = snd_err; |
| entry->stats.odiscards = snd_drop; |
| entry->stats.collisions = coll; |
| |
| /* |
| * calculated stats. |
| * |
| * we have imcast, but not ibcast. |
| */ |
| entry->stats.inucast = entry->stats.imcast.low + |
| entry->stats.ibcast.low; |
| entry->stats.onucast = entry->stats.omcast.low + |
| entry->stats.obcast.low; |
| |
| return 0; |
| } |
| |
| /* |
| * |
| * @retval 0 success |
| * @retval -1 no container specified |
| * @retval -2 could not open /proc/net/dev |
| * @retval -3 could not create entry (probably malloc) |
| */ |
| int |
| netsnmp_arch_interface_container_load(netsnmp_container* container, |
| u_int load_flags) |
| { |
| FILE *devin; |
| char line[256]; |
| netsnmp_interface_entry *entry = NULL; |
| static char scan_expected = 0; |
| int fd; |
| #ifdef NETSNMP_ENABLE_IPV6 |
| netsnmp_container *addr_container; |
| #endif |
| |
| DEBUGMSGTL(("access:interface:container:arch", "load (flags %x)\n", |
| load_flags)); |
| |
| if (NULL == container) { |
| snmp_log(LOG_ERR, "no container specified/found for interface\n"); |
| return -1; |
| } |
| |
| if (!(devin = fopen("/proc/net/dev", "r"))) { |
| DEBUGMSGTL(("access:interface", |
| "Failed to load Interface Table (linux1)\n")); |
| snmp_log(LOG_ERR, "cannot open /proc/net/dev ...\n"); |
| return -2; |
| } |
| |
| /* |
| * create socket for ioctls |
| */ |
| fd = socket(AF_INET, SOCK_DGRAM, 0); |
| if(fd < 0) { |
| snmp_log(LOG_ERR, "could not create socket\n"); |
| fclose(devin); |
| return -2; |
| } |
| |
| #ifdef NETSNMP_ENABLE_IPV6 |
| /* |
| * get ipv6 addresses |
| */ |
| addr_container = netsnmp_access_ipaddress_container_load(NULL, 0); |
| #endif |
| |
| /* |
| * Read the first two lines of the file, containing the header |
| * This indicates which version of the kernel we're working with, |
| * and hence which statistics are actually available. |
| * |
| * Wes originally suggested parsing the field names in this header |
| * to detect the position of individual fields directly, |
| * but I suspect this is probably more trouble than it's worth. |
| */ |
| fgets(line, sizeof(line), devin); |
| fgets(line, sizeof(line), devin); |
| |
| if( 0 == scan_expected ) { |
| if (strstr(line, "compressed")) { |
| scan_expected = 10; |
| DEBUGMSGTL(("access:interface", |
| "using linux 2.2 kernel /proc/net/dev\n")); |
| } else { |
| scan_expected = 5; |
| DEBUGMSGTL(("access:interface", |
| "using linux 2.0 kernel /proc/net/dev\n")); |
| } |
| } |
| |
| /* |
| * The rest of the file provides the statistics for each interface. |
| * Read in each line in turn, isolate the interface name |
| * and retrieve (or create) the corresponding data structure. |
| */ |
| while (fgets(line, sizeof(line), devin)) { |
| char *stats, *ifstart = line; |
| u_int flags; |
| oid if_index; |
| |
| flags = 0; |
| if (line[strlen(line) - 1] == '\n') |
| line[strlen(line) - 1] = '\0'; |
| |
| while (*ifstart && *ifstart == ' ') |
| ifstart++; |
| |
| if ((!*ifstart) || ((stats = strrchr(ifstart, ':')) == NULL)) { |
| snmp_log(LOG_ERR, |
| "interface data format error 1, line ==|%s|\n", line); |
| continue; |
| } |
| if ((scan_expected == 10) && ((stats - line) < 6)) { |
| snmp_log(LOG_ERR, |
| "interface data format error 2 (%d < 6), line ==|%s|\n", |
| (int)(stats - line), line); |
| } |
| |
| DEBUGMSGTL(("9:access:ifcontainer", "processing '%s'\n", ifstart)); |
| |
| /* |
| * get index via ioctl. |
| * If we've met this interface before, use the same index. |
| * Otherwise find an unused index value and use that. |
| */ |
| *stats++ = 0; /* null terminate name */ |
| |
| if_index = netsnmp_arch_interface_index_find(ifstart); |
| |
| /* |
| * set address type flags. |
| * the only way I know of to check an interface for |
| * ip version is to look for ip addresses. If anyone |
| * knows a better way, put it here! |
| */ |
| #ifdef NETSNMP_ENABLE_IPV6 |
| _arch_interface_has_ipv6(if_index, &flags, addr_container); |
| #endif |
| netsnmp_access_interface_ioctl_has_ipv4(fd, ifstart, 0, &flags); |
| |
| /* |
| * do we only want one address type? |
| */ |
| if (((load_flags & NETSNMP_ACCESS_INTERFACE_LOAD_IP4_ONLY) && |
| ((flags & NETSNMP_INTERFACE_FLAGS_HAS_IPV4) == 0)) || |
| ((load_flags & NETSNMP_ACCESS_INTERFACE_LOAD_IP6_ONLY) && |
| ((flags & NETSNMP_INTERFACE_FLAGS_HAS_IPV6) == 0))) { |
| DEBUGMSGTL(("9:access:ifcontainer", |
| "interface '%s' excluded by ip version\n", |
| ifstart)); |
| continue; |
| } |
| |
| entry = netsnmp_access_interface_entry_create(ifstart, 0); |
| if(NULL == entry) { |
| #ifdef NETSNMP_ENABLE_IPV6 |
| netsnmp_access_ipaddress_container_free(addr_container, 0); |
| #endif |
| netsnmp_access_interface_container_free(container, |
| NETSNMP_ACCESS_INTERFACE_FREE_NOFLAGS); |
| fclose(devin); |
| close(fd); |
| return -3; |
| } |
| entry->ns_flags = flags; /* initial flags; we'll set more later */ |
| |
| /* |
| * xxx-rks: get descr by linking mem from /proc/pci and /proc/iomem |
| */ |
| |
| |
| /* |
| * use ioctls for some stuff |
| * (ignore rc, so we get as much info as possible) |
| */ |
| netsnmp_access_interface_ioctl_physaddr_get(fd, entry); |
| |
| /* |
| * physaddr should have set type. make some guesses (based |
| * on name) if not. |
| */ |
| if(0 == entry->type) { |
| typedef struct _match_if { |
| int mi_type; |
| const char *mi_name; |
| } *pmatch_if, match_if; |
| |
| static match_if lmatch_if[] = { |
| {IANAIFTYPE_SOFTWARELOOPBACK, "lo"}, |
| {IANAIFTYPE_ETHERNETCSMACD, "eth"}, |
| {IANAIFTYPE_ETHERNETCSMACD, "vmnet"}, |
| {IANAIFTYPE_ISO88025TOKENRING, "tr"}, |
| {IANAIFTYPE_FASTETHER, "feth"}, |
| {IANAIFTYPE_GIGABITETHERNET,"gig"}, |
| {IANAIFTYPE_INFINIBAND,"ib"}, |
| {IANAIFTYPE_PPP, "ppp"}, |
| {IANAIFTYPE_SLIP, "sl"}, |
| {IANAIFTYPE_TUNNEL, "sit"}, |
| {IANAIFTYPE_BASICISDN, "ippp"}, |
| {IANAIFTYPE_PROPVIRTUAL, "bond"}, /* Bonding driver find fastest slave */ |
| {IANAIFTYPE_PROPVIRTUAL, "vad"}, /* ANS driver - ?speed? */ |
| {0, NULL} /* end of list */ |
| }; |
| |
| int len; |
| register pmatch_if pm; |
| |
| for (pm = lmatch_if; pm->mi_name; pm++) { |
| len = strlen(pm->mi_name); |
| if (0 == strncmp(entry->name, pm->mi_name, len)) { |
| entry->type = pm->mi_type; |
| break; |
| } |
| } |
| if(NULL == pm->mi_name) |
| entry->type = IANAIFTYPE_OTHER; |
| } |
| |
| /* |
| * interface identifier is specified based on physaddr and type |
| */ |
| switch (entry->type) { |
| case IANAIFTYPE_ETHERNETCSMACD: |
| case IANAIFTYPE_ETHERNET3MBIT: |
| case IANAIFTYPE_FASTETHER: |
| case IANAIFTYPE_FASTETHERFX: |
| case IANAIFTYPE_GIGABITETHERNET: |
| case IANAIFTYPE_FDDI: |
| case IANAIFTYPE_ISO88025TOKENRING: |
| if (NULL != entry->paddr && ETH_ALEN != entry->paddr_len) |
| break; |
| |
| entry->v6_if_id_len = entry->paddr_len + 2; |
| memcpy(entry->v6_if_id, entry->paddr, 3); |
| memcpy(entry->v6_if_id + 5, entry->paddr + 3, 3); |
| entry->v6_if_id[0] ^= 2; |
| entry->v6_if_id[3] = 0xFF; |
| entry->v6_if_id[4] = 0xFE; |
| |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V6_IFID; |
| break; |
| |
| case IANAIFTYPE_SOFTWARELOOPBACK: |
| entry->v6_if_id_len = 0; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_V6_IFID; |
| break; |
| } |
| |
| if (IANAIFTYPE_ETHERNETCSMACD == entry->type) { |
| unsigned long long speed; |
| unsigned long long defaultspeed = NOMINAL_LINK_SPEED; |
| if (!(entry->os_flags & IFF_RUNNING)) { |
| /* |
| * use speed 0 if the if speed cannot be determined *and* the |
| * interface is down |
| */ |
| defaultspeed = 0; |
| } |
| speed = netsnmp_linux_interface_get_if_speed(fd, |
| entry->name, defaultspeed); |
| if (speed > 0xffffffffL) { |
| entry->speed = 0xffffffff; |
| } else |
| entry->speed = speed; |
| entry->speed_high = speed / 1000000LL; |
| } |
| #ifdef APPLIED_PATCH_836390 /* xxx-rks ifspeed fixes */ |
| else if (IANAIFTYPE_PROPVIRTUAL == entry->type) |
| entry->speed = _get_bonded_if_speed(entry); |
| #endif |
| else |
| netsnmp_access_interface_entry_guess_speed(entry); |
| |
| netsnmp_access_interface_ioctl_flags_get(fd, entry); |
| |
| netsnmp_access_interface_ioctl_mtu_get(fd, entry); |
| |
| /* |
| * Zero speed means link problem. |
| * - i'm not sure this is always true... |
| */ |
| if((entry->speed == 0) && (entry->os_flags & IFF_UP)) { |
| entry->os_flags &= ~IFF_RUNNING; |
| } |
| |
| /* |
| * check for promiscuous mode. |
| * NOTE: there are 2 ways to set promiscuous mode in Linux |
| * (kernels later than 2.2.something) - using ioctls and |
| * using setsockopt. The ioctl method tested here does not |
| * detect if an interface was set using setsockopt. google |
| * on IFF_PROMISC and linux to see lots of arguments about it. |
| */ |
| if(entry->os_flags & IFF_PROMISC) { |
| entry->promiscuous = 1; /* boolean */ |
| } |
| |
| /* |
| * hardcoded max packet size |
| * (see ip_frag_reasm: if(len > 65535) goto out_oversize;) |
| */ |
| entry->reasm_max_v4 = entry->reasm_max_v6 = 65535; |
| entry->ns_flags |= |
| NETSNMP_INTERFACE_FLAGS_HAS_V4_REASMMAX | |
| NETSNMP_INTERFACE_FLAGS_HAS_V6_REASMMAX; |
| |
| netsnmp_access_interface_entry_overrides(entry); |
| |
| if (! (load_flags & NETSNMP_ACCESS_INTERFACE_LOAD_NO_STATS)) |
| _parse_stats(entry, stats, scan_expected); |
| |
| if (flags & NETSNMP_INTERFACE_FLAGS_HAS_IPV4) |
| _arch_interface_flags_v4_get(entry); |
| |
| #ifdef NETSNMP_ENABLE_IPV6 |
| if (flags & NETSNMP_INTERFACE_FLAGS_HAS_IPV6) |
| _arch_interface_flags_v6_get(entry); |
| #endif /* NETSNMP_ENABLE_IPV6 */ |
| |
| /* |
| * add to container |
| */ |
| CONTAINER_INSERT(container, entry); |
| } |
| #ifdef NETSNMP_ENABLE_IPV6 |
| netsnmp_access_ipaddress_container_free(addr_container, 0); |
| #endif |
| fclose(devin); |
| close(fd); |
| return 0; |
| } |
| |
| int |
| netsnmp_arch_set_admin_status(netsnmp_interface_entry * entry, |
| int ifAdminStatus_val) |
| { |
| int and_complement; |
| |
| DEBUGMSGTL(("access:interface:arch", "set_admin_status\n")); |
| |
| if(IFADMINSTATUS_UP == ifAdminStatus_val) |
| and_complement = 0; /* |= */ |
| else |
| and_complement = 1; /* &= ~ */ |
| |
| return netsnmp_access_interface_ioctl_flags_set(-1, entry, |
| IFF_UP, and_complement); |
| } |
| |
| #ifdef HAVE_LINUX_ETHTOOL_H |
| /** |
| * Determines network interface speed from ETHTOOL_GSET |
| */ |
| unsigned long long |
| netsnmp_linux_interface_get_if_speed(int fd, const char *name, |
| unsigned long long defaultspeed) |
| { |
| int ret; |
| struct ifreq ifr; |
| struct ethtool_cmd edata; |
| uint16_t speed_hi; |
| uint32_t speed; |
| |
| memset(&ifr, 0, sizeof(ifr)); |
| memset(&edata, 0, sizeof(edata)); |
| edata.cmd = ETHTOOL_GSET; |
| |
| strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
| ifr.ifr_data = (char *) &edata; |
| |
| ret = ioctl(fd, SIOCETHTOOL, &ifr); |
| if (ret == -1 || edata.speed == 0) { |
| DEBUGMSGTL(("mibII/interfaces", "ETHTOOL_GSET on %s failed (%d / %d)\n", |
| ifr.ifr_name, ret, edata.speed)); |
| return netsnmp_linux_interface_get_if_speed_mii(fd,name,defaultspeed); |
| } |
| |
| #ifdef HAVE_STRUCT_ETHTOOL_CMD_SPEED_HI |
| speed_hi = edata.speed_hi; |
| #else |
| speed_hi = 0; |
| #endif |
| speed = speed_hi << 16 | edata.speed; |
| if (speed == 0xffff || speed == 0xffffffffUL /*SPEED_UNKNOWN*/) |
| speed = defaultspeed; |
| /* return in bps */ |
| DEBUGMSGTL(("mibII/interfaces", "ETHTOOL_GSET on %s speed = %#x -> %d\n", |
| ifr.ifr_name, speed_hi << 16 | edata.speed, speed)); |
| return speed * 1000LL * 1000LL; |
| } |
| #endif |
| |
| /** |
| * Determines network interface speed from MII |
| */ |
| unsigned long long |
| #ifdef HAVE_LINUX_ETHTOOL_H |
| netsnmp_linux_interface_get_if_speed_mii(int fd, const char *name, |
| unsigned long long defaultspeed) |
| #else |
| netsnmp_linux_interface_get_if_speed(int fd, const char *name, |
| unsigned long long defaultspeed) |
| #endif |
| { |
| unsigned long long retspeed = defaultspeed; |
| struct ifreq ifr; |
| |
| /* the code is based on mii-diag utility by Donald Becker |
| * see ftp://ftp.scyld.com/pub/diag/mii-diag.c |
| */ |
| ushort *data = (ushort *)(&ifr.ifr_data); |
| unsigned phy_id; |
| int mii_reg, i; |
| ushort mii_val[32]; |
| ushort bmcr, bmsr, nway_advert, lkpar; |
| const unsigned long long media_speeds[] = {10000000, 10000000, 100000000, 100000000, 10000000, 0}; |
| /* It corresponds to "10baseT", "10baseT-FD", "100baseTx", "100baseTx-FD", "100baseT4", "Flow-control", 0, */ |
| |
| strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
| data[0] = 0; |
| |
| /* |
| * SIOCGMIIPHY has been defined since at least kernel 2.4.10 (Sept 2001). |
| * It's probably safe to drop the interim SIOCDEVPRIVATE handling now! |
| */ |
| if (ioctl(fd, SIOCGMIIPHY, &ifr) < 0) { |
| DEBUGMSGTL(("mibII/interfaces", "SIOCGMIIPHY on %s failed\n", |
| ifr.ifr_name)); |
| return retspeed; |
| } |
| |
| /* Begin getting mii register values */ |
| phy_id = data[0]; |
| for (mii_reg = 0; mii_reg < 8; mii_reg++){ |
| data[0] = phy_id; |
| data[1] = mii_reg; |
| if(ioctl(fd, SIOCGMIIREG, &ifr) <0){ |
| DEBUGMSGTL(("mibII/interfaces", "SIOCGMIIREG on %s failed\n", ifr.ifr_name)); |
| } |
| mii_val[mii_reg] = data[3]; |
| } |
| /*Parsing of mii values*/ |
| /*Invalid basic mode control register*/ |
| if (mii_val[0] == 0xffff || mii_val[1] == 0x0000) { |
| DEBUGMSGTL(("mibII/interfaces", "No MII transceiver present!.\n")); |
| return retspeed; |
| } |
| /* Descriptive rename. */ |
| bmcr = mii_val[0]; /*basic mode control register*/ |
| bmsr = mii_val[1]; /* basic mode status register*/ |
| nway_advert = mii_val[4]; /* autonegotiation advertisement*/ |
| lkpar = mii_val[5]; /*link partner ability*/ |
| |
| /*Check for link existence, returns 0 if link is absent*/ |
| if ((bmsr & 0x0016) != 0x0004){ |
| DEBUGMSGTL(("mibII/interfaces", "No link...\n")); |
| retspeed = 0; |
| return retspeed; |
| } |
| |
| if(!(bmcr & 0x1000) ){ |
| DEBUGMSGTL(("mibII/interfaces", "Auto-negotiation disabled.\n")); |
| retspeed = bmcr & 0x2000 ? 100000000 : 10000000; |
| return retspeed; |
| } |
| /* Link partner got our advertised abilities */ |
| if (lkpar & 0x4000) { |
| int negotiated = nway_advert & lkpar & 0x3e0; |
| int max_capability = 0; |
| /* Scan for the highest negotiated capability, highest priority |
| (100baseTx-FDX) to lowest (10baseT-HDX). */ |
| int media_priority[] = {8, 9, 7, 6, 5}; /* media_names[i-5] */ |
| for (i = 0; media_priority[i]; i++){ |
| if (negotiated & (1 << media_priority[i])) { |
| max_capability = media_priority[i]; |
| break; |
| } |
| } |
| if (max_capability) |
| retspeed = media_speeds[max_capability - 5]; |
| else |
| DEBUGMSGTL(("mibII/interfaces", "No common media type was autonegotiated!\n")); |
| }else if(lkpar & 0x00A0){ |
| retspeed = (lkpar & 0x0080) ? 100000000 : 10000000; |
| } |
| return retspeed; |
| } |
| #ifdef SUPPORT_PREFIX_FLAGS |
| void netsnmp_prefix_process(int fd, void *data); |
| |
| /* Open netlink socket to watch new ipv6 addresses and prefixes. */ |
| int netsnmp_prefix_listen() |
| { |
| struct { |
| struct nlmsghdr n; |
| struct ifinfomsg r; |
| char buf[1024]; |
| } req; |
| |
| struct rtattr *rta; |
| int status; |
| struct sockaddr_nl localaddrinfo; |
| unsigned groups = 0; |
| |
| int fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); |
| if (fd < 0) { |
| snmp_log(LOG_ERR, "netsnmp_prefix_listen: Cannot create socket.\n"); |
| return -1; |
| } |
| |
| memset(&localaddrinfo, 0, sizeof(struct sockaddr_nl)); |
| |
| groups |= RTMGRP_IPV6_IFADDR; |
| groups |= RTMGRP_IPV6_PREFIX; |
| localaddrinfo.nl_family = AF_NETLINK; |
| localaddrinfo.nl_groups = groups; |
| |
| if (bind(fd, (struct sockaddr*)&localaddrinfo, sizeof(localaddrinfo)) < 0) { |
| snmp_log(LOG_ERR,"netsnmp_prefix_listen: Bind failed.\n"); |
| close(fd); |
| return -1; |
| } |
| |
| memset(&req, 0, sizeof(req)); |
| req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg)); |
| req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ROOT; |
| req.n.nlmsg_type = RTM_GETLINK; |
| req.r.ifi_family = AF_INET6; |
| rta = (struct rtattr *)(((char *)&req) + NLMSG_ALIGN(req.n.nlmsg_len)); |
| rta->rta_len = RTA_LENGTH(16); |
| |
| status = send(fd, &req, req.n.nlmsg_len, 0); |
| if (status < 0) { |
| snmp_log(LOG_ERR,"netsnmp_prefix_listen: send failed\n"); |
| close(fd); |
| return -1; |
| } |
| |
| if (register_readfd(fd, netsnmp_prefix_process, NULL) != 0) { |
| snmp_log(LOG_ERR,"netsnmp_prefix_listen: error registering netlink socket\n"); |
| close(fd); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /* Process one incoming netlink packets. |
| * RTM_NEWADDR and RTM_NEWPREFIX usually arrive in separate packets |
| * -> information from these packets must be stored locally and |
| * new prefix is added when information from both packets is complete. |
| */ |
| void netsnmp_prefix_process(int fd, void *data) |
| { |
| int status; |
| char buf[16384]; |
| struct nlmsghdr *nlmp; |
| struct rtattr *rtatp; |
| struct ifaddrmsg *ifa; |
| struct prefixmsg *prefix; |
| struct in6_addr *in6p; |
| |
| /* these values must persist between calls */ |
| static char in6pAddr[40]; |
| static int have_addr = 0,have_prefix = 0; |
| static int onlink = 2,autonomous = 2; /*Assume as false*/ |
| |
| int iret; |
| prefix_cbx *new; |
| int len, req_len, length; |
| |
| status = recv(fd, buf, sizeof(buf), 0); |
| if (status < 0) { |
| if (errno == EINTR) |
| return; |
| snmp_log(LOG_ERR,"netsnmp_prefix_listen: Receive failed.\n"); |
| return; |
| } |
| |
| if(status == 0){ |
| DEBUGMSGTL(("access:interface:prefix", "End of File\n")); |
| return; |
| } |
| |
| for(nlmp = (struct nlmsghdr *)buf; status > sizeof(*nlmp);){ |
| len = nlmp->nlmsg_len; |
| req_len = len - sizeof(*nlmp); |
| |
| if (req_len < 0 || len > status) { |
| snmp_log(LOG_ERR,"netsnmp_prefix_listen: Error in length.\n"); |
| return; |
| } |
| |
| if (!NLMSG_OK(nlmp, status)) { |
| DEBUGMSGTL(("access:interface:prefix", "NLMSG not OK\n")); |
| continue; |
| } |
| |
| if (nlmp->nlmsg_type == RTM_NEWADDR || nlmp->nlmsg_type == RTM_DELADDR) { |
| ifa = NLMSG_DATA(nlmp); |
| length = nlmp->nlmsg_len; |
| length -= NLMSG_LENGTH(sizeof(*ifa)); |
| |
| if (length < 0) { |
| DEBUGMSGTL(("access:interface:prefix", "wrong nlmsg length %d\n", length)); |
| continue; |
| } |
| |
| if(!ifa->ifa_flags) { |
| rtatp = IFA_RTA(ifa); |
| while (RTA_OK(rtatp, length)) { |
| if (rtatp->rta_type == IFA_ADDRESS){ |
| in6p = (struct in6_addr *) RTA_DATA(rtatp); |
| if(nlmp->nlmsg_type == RTM_DELADDR) { |
| snprintf(in6pAddr, sizeof(in6pAddr), "%04x%04x%04x%04x%04x%04x%04x%04x", NIP6(*in6p)); |
| have_addr = -1; |
| break; |
| } else { |
| snprintf(in6pAddr, sizeof(in6pAddr), "%04x%04x%04x%04x%04x%04x%04x%04x", NIP6(*in6p)); |
| have_addr = 1; |
| break; |
| } |
| } |
| rtatp = RTA_NEXT(rtatp,length); |
| } |
| } |
| } |
| |
| if(nlmp->nlmsg_type == RTM_NEWPREFIX) { |
| prefix = NLMSG_DATA(nlmp); |
| length = nlmp->nlmsg_len; |
| length -= NLMSG_LENGTH(sizeof(*prefix)); |
| |
| if (length < 0) { |
| DEBUGMSGTL(("access:interface:prefix", "wrong nlmsg length %d\n", length)); |
| continue; |
| } |
| have_prefix = 1; |
| if (prefix->prefix_flags & IF_PREFIX_ONLINK) { |
| onlink = 1; |
| } |
| if (prefix->prefix_flags & IF_PREFIX_AUTOCONF) { |
| autonomous = 1; |
| } |
| } |
| status -= NLMSG_ALIGN(len); |
| nlmp = (struct nlmsghdr*)((char*)nlmp + NLMSG_ALIGN(len)); |
| } |
| |
| if((have_addr == 1) && (have_prefix == 1)){ |
| if(!(new = net_snmp_create_prefix_info (onlink, autonomous, in6pAddr))) |
| DEBUGMSGTL(("access:interface:prefix", "Unable to create prefix info\n")); |
| else { |
| |
| iret = net_snmp_search_update_prefix_info (list_info.list_head, new, 0); |
| if(iret < 0) { |
| DEBUGMSGTL(("access:interface:prefix", "Unable to add/update prefix info\n")); |
| free(new); |
| } |
| if(iret == 2) /*Only when enrty already exists and we are only updating*/ |
| free(new); |
| } |
| have_addr = have_prefix = 0; |
| onlink = autonomous = 2; /*Set to defaults again*/ |
| } else if (have_addr == -1) { |
| iret = net_snmp_delete_prefix_info (list_info.list_head, in6pAddr); |
| if(iret < 0) |
| DEBUGMSGTL(("access:interface:prefix", "Unable to delete the prefix info\n")); |
| if(!iret) |
| DEBUGMSGTL(("access:interface:prefix", "Unable to find the node to delete\n")); |
| have_addr = 0; |
| } |
| } |
| #endif |
| |
