| /* |
| * Interface MIB architecture support |
| * |
| * Based on patch 1362403, submited by Rojer |
| * |
| * $Id$ |
| */ |
| #include <net-snmp/net-snmp-config.h> |
| #include <net-snmp/net-snmp-includes.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 "BSD 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 <sys/types.h> |
| #include <sys/time.h> |
| #include <net/if.h> |
| #include <net/if_dl.h> |
| #include <net/if_types.h> |
| #include <net/if_media.h> |
| |
| /* |
| * account for minor differences between FreeBSD and OpenBSD. |
| * If this gets unruly, split stuff out into the respective |
| * files (interface_*BDS.c). |
| */ |
| /* |
| * FreeBSD has 2 promiscuous flags: kernel/user; check either |
| * http://unix.derkeiler.com/Mailing-Lists/FreeBSD/net/2004-09/0289.html |
| * which says: |
| * The first flag (IFF_PROMISC) is the one that the kernel code uses and |
| * sets on an interface's ifp structure. The second one is the one that |
| * comes from user space programs and is sent to the routine ifhwioctl() |
| * to set the first flag. |
| */ |
| #ifdef IFF_PPROMISC |
| # define ARCH_PROMISC_FLAG (IFF_PPROMISC|IFF_PROMISC) |
| #else |
| # define ARCH_PROMISC_FLAG IFF_PROMISC |
| #endif |
| |
| extern struct timeval starttime; |
| |
| /* sa_len roundup macro. */ |
| #define ROUNDUP(a) \ |
| ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) |
| |
| void |
| netsnmp_arch_interface_init(void) |
| { |
| /* |
| * nothing to do |
| */ |
| } |
| |
| /* |
| * find the ifIndex for an interface name |
| * |
| * @retval 0 : no index found |
| * @retval >0: ifIndex for interface |
| */ |
| oid |
| netsnmp_arch_interface_index_find(const char *name) |
| { |
| return if_nametoindex(name); |
| } |
| |
| /* |
| * subroutine to translate known media typed to speed. |
| * see /usr/include/net/if_media.h for definitions |
| */ |
| |
| void |
| netsnmp_sysctl_ifmedia_to_speed(int media, u_int *speed, |
| u_int *speed_high) |
| { |
| *speed = 0; |
| *speed_high = 0; |
| |
| switch (IFM_TYPE(media)) { |
| case IFM_ETHER: |
| switch (IFM_SUBTYPE(media)) { |
| case IFM_10_T: |
| case IFM_10_2: |
| case IFM_10_5: |
| case IFM_10_STP: |
| case IFM_10_FL: |
| *speed = 10000000; |
| *speed_high = 10; break; |
| case IFM_100_TX: |
| case IFM_100_FX: |
| case IFM_100_T4: |
| case IFM_100_VG: |
| case IFM_100_T2: |
| *speed = 100000000; |
| *speed_high = 100; break; |
| case IFM_1000_LX: |
| case IFM_1000_CX: |
| #ifdef IFM_1000_T |
| case IFM_1000_T: |
| #endif |
| *speed = 1000000000; |
| *speed_high = 1000; break; |
| #ifdef IFM_10GBASE_SR |
| case IFM_10GBASE_SR: |
| case IFM_10GBASE_LR: |
| *speed = (u_int) -1; /* 4294967295; */ |
| *speed_high = 10000; break; |
| #endif |
| } |
| break; |
| case IFM_IEEE80211: |
| switch (IFM_SUBTYPE(media)) { |
| case IFM_IEEE80211_FH1: |
| case IFM_IEEE80211_DS1: |
| *speed = 1000000; |
| *speed_high = 1; |
| break; |
| case IFM_IEEE80211_FH2: |
| case IFM_IEEE80211_DS2: |
| *speed = 2000000; |
| *speed_high = 2; |
| break; |
| case IFM_IEEE80211_DS5: |
| *speed = 5500000; |
| *speed_high = 5; |
| break; |
| case IFM_IEEE80211_DS11: |
| *speed = 11000000; |
| *speed_high = 11; |
| break; |
| case IFM_IEEE80211_DS22: |
| *speed = 22000000; |
| *speed_high = 22; |
| break; |
| #ifdef IFM_IEEE80211_OFDM6 |
| case IFM_IEEE80211_OFDM6: |
| *speed = 6000000; |
| *speed_high = 6; |
| break; |
| case IFM_IEEE80211_OFDM9: |
| *speed = 9000000; |
| *speed_high = 9; |
| break; |
| case IFM_IEEE80211_OFDM12: |
| *speed = 12000000; |
| *speed_high = 12; |
| break; |
| case IFM_IEEE80211_OFDM18: |
| *speed = 18000000; |
| *speed_high = 18; |
| break; |
| case IFM_IEEE80211_OFDM24: |
| *speed = 24000000; |
| *speed_high = 24; |
| break; |
| case IFM_IEEE80211_OFDM36: |
| *speed = 36000000; |
| *speed_high = 36; |
| break; |
| case IFM_IEEE80211_OFDM48: |
| *speed = 48000000; |
| *speed_high = 48; |
| break; |
| case IFM_IEEE80211_OFDM54: |
| *speed = 54000000; |
| *speed_high = 54; |
| break; |
| case IFM_IEEE80211_OFDM72: |
| *speed = 72000000; |
| *speed_high = 72; |
| break; |
| #endif |
| } |
| break; |
| #if defined(IFM_TOKEN) |
| case IFM_TOKEN: |
| switch (IFM_SUBTYPE(media)) { |
| case IFM_TOK_STP4: |
| case IFM_TOK_UTP4: |
| *speed = 4000000; |
| *speed_high = 4; |
| break; |
| case IFM_TOK_STP16: |
| case IFM_TOK_UTP16: |
| *speed = 16000000; |
| *speed_high = 16; |
| break; |
| #if defined(IFM_TOK_STP100) /* guessing if you've got one, you've got the other.. */ |
| case IFM_TOK_STP100: |
| case IFM_TOK_UTP100: |
| *speed = 100000000; |
| *speed_high = 100; |
| break; |
| #endif /* IFM_TOK_STP100 */ |
| } |
| break; |
| #endif /* IFM_TOKEN */ |
| #ifdef IFM_ATM |
| case IFM_ATM: |
| switch (IFM_SUBTYPE(media)) { |
| case IFM_ATM_MM_155: |
| case IFM_ATM_SM_155: |
| *speed = 155000000; |
| *speed_high = 155; |
| break; |
| case IFM_ATM_MM_622: |
| case IFM_ATM_SM_622: |
| *speed = 622000000; |
| *speed_high = 622; |
| break; |
| } |
| #endif |
| } |
| return; |
| } |
| |
| /* |
| * @retval 0 speed could not be determined (error, unknown media) |
| * @retval >0 speed, equal to *speed. |
| * sets *speed=2^31 and returns *speed_high=speed/10^6 as required |
| * by ifSpeed/ifHighSpeed. |
| */ |
| |
| int |
| netsnmp_sysctl_get_if_speed(char *name, u_int *speed, |
| u_int *speed_high) |
| { |
| int s; |
| struct ifmediareq ifmr; |
| int *media_list, i; |
| u_int t_speed, t_speed_high; |
| u_int m_speed, m_speed_high; |
| |
| *speed = 0; |
| *speed_high = 0; |
| |
| if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
| return 0; |
| } |
| |
| memset(&ifmr, 0, sizeof(ifmr)); |
| strlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); |
| |
| DEBUGMSGTL(("access:interface:container:sysctl"," speed in\n")); |
| if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0 || |
| ifmr.ifm_count == 0) { |
| |
| close(s); |
| return 0; |
| } |
| |
| /* |
| * try to get speed from current media. |
| * if unsuccessful (e.g., interface is down), get a list of capabilities, |
| * try each and return maximum speed the interface is capable of. |
| */ |
| |
| netsnmp_sysctl_ifmedia_to_speed(ifmr.ifm_current, speed, speed_high); |
| |
| if (*speed == 0 && |
| (media_list = (int *) malloc(ifmr.ifm_count * sizeof(int))) != NULL ) { |
| |
| ifmr.ifm_ulist = media_list; |
| |
| if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) == 0) { |
| m_speed = 0; |
| m_speed_high = 0; |
| for (i = 0; i < ifmr.ifm_count; i++) { |
| |
| netsnmp_sysctl_ifmedia_to_speed(media_list[i], &t_speed, |
| &t_speed_high); |
| if (t_speed_high > m_speed_high || |
| (t_speed_high == m_speed_high && t_speed > t_speed)) { |
| m_speed_high = t_speed_high; |
| m_speed = t_speed; |
| } |
| } |
| *speed = m_speed; |
| *speed_high = m_speed_high; |
| } |
| free(media_list); |
| } |
| |
| close(s); |
| |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "%s: speed: %u, speed_high: %u\n", |
| name, *speed, *speed_high)); |
| |
| return *speed; |
| } |
| |
| static void set_counter(struct counter64 *c, uint64_t v) |
| { |
| c->low = (uint32_t)(v); |
| c->high = (v) >> 32; |
| } |
| |
| /* |
| * |
| * @retval 0 success |
| * @retval -1 no container specified |
| * @retval -2 could not get interface info |
| * @retval -3 could not create entry (probably malloc) |
| */ |
| int |
| netsnmp_arch_interface_container_load(netsnmp_container* container, |
| u_int load_flags) |
| { |
| netsnmp_interface_entry *entry = NULL; |
| u_char *if_list = NULL, *cp; |
| size_t if_list_size = 0; |
| struct if_msghdr *ifp; |
| int sysctl_oid[] = { CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0 }; |
| struct ifa_msghdr *ifa; |
| struct sockaddr *a; |
| struct sockaddr_dl *adl; |
| int amask; |
| char *if_name; |
| int flags; |
| #ifdef HAVE_STRUCT_IFNET_IF_LASTCHANGE_TV_NSEC |
| struct timespec startspec; |
| |
| TIMEVAL_TO_TIMESPEC(&starttime, &startspec); |
| #endif |
| |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "load (flags %u)\n", load_flags)); |
| |
| if (NULL == container) { |
| snmp_log(LOG_ERR, "no container specified/found for interface\n"); |
| return -1; |
| } |
| |
| if (sysctl(sysctl_oid, sizeof(sysctl_oid)/sizeof(int), 0, |
| &if_list_size, 0, 0) == -1) { |
| snmp_log(LOG_ERR, "could not get interface info (size)\n"); |
| return -2; |
| } |
| |
| if_list = malloc(if_list_size); |
| if (if_list == NULL) { |
| snmp_log(LOG_ERR, "could not allocate memory for interface info " |
| "(%u bytes)\n", (unsigned) if_list_size); |
| return -3; |
| } else { |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "allocated %u bytes for if_list\n", |
| (unsigned) if_list_size)); |
| } |
| |
| if (sysctl(sysctl_oid, sizeof(sysctl_oid)/sizeof(int), if_list, |
| &if_list_size, 0, 0) == -1) { |
| snmp_log(LOG_ERR, "could not get interface info\n"); |
| free(if_list); |
| return -2; |
| } |
| |
| /* 1st pass: create interface entries */ |
| for (cp = if_list; cp < if_list + if_list_size; cp += ifp->ifm_msglen) { |
| |
| ifp = (struct if_msghdr *) cp; |
| if_name = NULL; |
| flags = 0; |
| adl = NULL; |
| |
| if (ifp->ifm_type != RTM_IFINFO) |
| continue; |
| |
| if (ifp->ifm_addrs & RTA_IFP) { |
| a = (struct sockaddr *) (ifp + 1); |
| /* |
| * if_msghdr is followed by one or more sockaddrs, of which we |
| * need only RTA_IFP. most of the time RTA_IFP is the first |
| * address we get, hence the shortcut. |
| */ |
| if ((ifp->ifm_addrs & (~RTA_IFP - 1)) != 0) { |
| /* skip all addresses up to RTA_IFP. */ |
| for (amask = (RTA_IFP >> 1); amask != 0; amask >>= 1) { |
| if (ifp->ifm_addrs & amask) |
| a = (struct sockaddr *) |
| ( ((char *) a) + ROUNDUP(a->sa_len) ); |
| } |
| } |
| adl = (struct sockaddr_dl *) a; |
| if_name = (char *) adl->sdl_data; |
| if_name[adl->sdl_nlen] = '\0'; |
| } |
| if (!(ifp->ifm_addrs & RTA_IFP) || if_name == NULL) { |
| snmp_log(LOG_ERR, "ifm_index %u: no interface name in message, " |
| "skipping\n", ifp->ifm_index); |
| continue; |
| } |
| |
| entry = netsnmp_access_interface_entry_create(if_name, ifp->ifm_index); |
| if(NULL == entry) { |
| netsnmp_access_interface_container_free(container, |
| NETSNMP_ACCESS_INTERFACE_FREE_NOFLAGS); |
| free(if_list); |
| return -3; |
| } |
| |
| /* get physical address */ |
| if (adl != NULL && adl->sdl_alen > 0) { |
| entry->paddr_len = adl->sdl_alen; |
| entry->paddr = malloc(entry->paddr_len); |
| memcpy(entry->paddr, adl->sdl_data + adl->sdl_nlen, adl->sdl_alen); |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "%s: paddr_len=%d, entry->paddr=%x:%x:%x:%x:%x:%x\n", |
| if_name, entry->paddr_len, |
| entry->paddr[0], entry->paddr[1], entry->paddr[2], |
| entry->paddr[3], entry->paddr[4], entry->paddr[5])); |
| } else { |
| entry->paddr = malloc(6); |
| entry->paddr_len = 6; |
| memset(entry->paddr, 0, 6); |
| } |
| |
| entry->mtu = ifp->ifm_data.ifi_mtu; |
| entry->type = ifp->ifm_data.ifi_type; |
| |
| |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_IF_FLAGS; |
| entry->os_flags = ifp->ifm_flags; |
| |
| if (ifp->ifm_flags & IFF_UP) { |
| entry->admin_status = IFADMINSTATUS_UP; |
| #if defined( LINK_STATE_UP ) && defined( LINK_STATE_DOWN ) |
| if (ifp->ifm_data.ifi_link_state == LINK_STATE_UP) { |
| entry->oper_status = IFOPERSTATUS_UP; |
| } else if (ifp->ifm_data.ifi_link_state == LINK_STATE_DOWN) { |
| entry->oper_status = IFOPERSTATUS_DOWN; |
| } else |
| #endif |
| { |
| /* |
| * link state is unknown, which is not very useful to report. |
| * use running state instead. |
| */ |
| entry->oper_status = ifp->ifm_flags & IFF_RUNNING ? 1 : 2; |
| } |
| } else { |
| entry->admin_status = IFADMINSTATUS_DOWN; |
| /* |
| * IF-MIB specifically says that ifOperStatus should be down in |
| * this case |
| */ |
| entry->oper_status = IFOPERSTATUS_DOWN; |
| } |
| |
| entry->reasm_max_v4 = entry->reasm_max_v6 = IP_MAXPACKET; |
| entry->ns_flags |= |
| NETSNMP_INTERFACE_FLAGS_HAS_V4_REASMMAX | |
| NETSNMP_INTERFACE_FLAGS_HAS_V6_REASMMAX; |
| |
| /* get counters */ |
| set_counter(&entry->stats.ibytes, ifp->ifm_data.ifi_ibytes); |
| set_counter(&entry->stats.iucast, ifp->ifm_data.ifi_ipackets); |
| set_counter(&entry->stats.imcast, ifp->ifm_data.ifi_imcasts); |
| entry->stats.ierrors = ifp->ifm_data.ifi_ierrors; |
| entry->stats.idiscards = ifp->ifm_data.ifi_iqdrops; |
| entry->stats.iunknown_protos = ifp->ifm_data.ifi_noproto; |
| |
| set_counter(&entry->stats.obytes, ifp->ifm_data.ifi_obytes); |
| set_counter(&entry->stats.oucast, ifp->ifm_data.ifi_opackets); |
| set_counter(&entry->stats.omcast, ifp->ifm_data.ifi_omcasts); |
| entry->stats.oerrors = ifp->ifm_data.ifi_oerrors; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_BYTES | |
| NETSNMP_INTERFACE_FLAGS_HAS_DROPS | |
| NETSNMP_INTERFACE_FLAGS_HAS_MCAST_PKTS; |
| |
| #ifdef HAVE_STRUCT_IFNET_IF_LASTCHANGE_TV_NSEC |
| if (timespeccmp(&ifp->ifm_data.ifi_lastchange, &startspec, >)) { |
| #else |
| if (timercmp(&ifp->ifm_data.ifi_lastchange, &starttime, >)) { |
| #endif |
| entry->lastchange = (ifp->ifm_data.ifi_lastchange.tv_sec - |
| starttime.tv_sec) * 100; |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_LASTCHANGE; |
| } else { |
| entry->lastchange = 0; |
| } |
| |
| if (ifp->ifm_flags & ARCH_PROMISC_FLAG) |
| entry->promiscuous = 1; |
| |
| /* try to guess the speed from media type */ |
| netsnmp_sysctl_get_if_speed(entry->name, &entry->speed, |
| &entry->speed_high); |
| if (entry->speed_high != 0) { |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_SPEED; |
| } else { |
| /* or resort to ifi_baudrate */ |
| entry->speed = ifp->ifm_data.ifi_baudrate; |
| } |
| |
| netsnmp_access_interface_entry_overrides(entry); |
| |
| CONTAINER_INSERT(container, entry); |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "created entry %d for %s\n", (int)entry->index, entry->name)); |
| } /* for (each interface entry) */ |
| |
| /* pass 2: walk addresses */ |
| for (cp = if_list; cp < if_list + if_list_size; cp += ifa->ifam_msglen) { |
| |
| ifa = (struct ifa_msghdr *) cp; |
| |
| if (ifa->ifam_type != RTM_NEWADDR) |
| continue; |
| |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "received 0x%x in RTM_NEWADDR for ifindex %u\n", |
| ifa->ifam_addrs, ifa->ifam_index)); |
| |
| entry = netsnmp_access_interface_entry_get_by_index(container, |
| ifa->ifam_index); |
| if (entry == NULL) { |
| snmp_log(LOG_ERR, "address for a nonexistent interface? index=%d", |
| ifa->ifam_index); |
| continue; |
| } |
| |
| /* |
| * walk the list of addresses received. we do not use actual |
| * addresses, the sole purpose of this is to set flags |
| */ |
| a = (struct sockaddr *) (ifa + 1); |
| for (amask = ifa->ifam_addrs; amask != 0; amask >>= 1) { |
| if ((amask & 1) != 0) { |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "%s: a=%p, sa_len=%d, sa_family=0x%x\n", |
| entry->name, a, a->sa_len, a->sa_family)); |
| |
| if (a->sa_family == AF_INET) |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_IPV4; |
| else if (a->sa_family == AF_INET6) |
| entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_IPV6; |
| |
| a = (struct sockaddr *) ( ((char *) a) + ROUNDUP(a->sa_len) ); |
| } |
| } |
| DEBUGMSGTL(("access:interface:container:sysctl", |
| "%s: flags=0x%x\n", entry->name, entry->ns_flags)); |
| } |
| |
| if (if_list != NULL) |
| free(if_list); |
| |
| return 0; |
| } |
| |
| int |
| netsnmp_arch_set_admin_status(netsnmp_interface_entry * entry, |
| int ifAdminStatus_val) |
| { |
| DEBUGMSGTL(("access:interface:arch", "set_admin_status\n")); |
| |
| /* TODO: implement this call */ |
| |
| /* not implemented */ |
| snmp_log(LOG_ERR, "netsnmp_arch_set_admin_status not (yet) implemented " |
| "for BSD sysctl.\n"); |
| |
| return -4; |
| } |
