diff options
Diffstat (limited to 'usr.sbin/rtadvd/config.c')
| -rw-r--r-- | usr.sbin/rtadvd/config.c | 548 |
1 files changed, 357 insertions, 191 deletions
diff --git a/usr.sbin/rtadvd/config.c b/usr.sbin/rtadvd/config.c index c0e442b..681611f 100644 --- a/usr.sbin/rtadvd/config.c +++ b/usr.sbin/rtadvd/config.c @@ -3,6 +3,7 @@ /* * Copyright (C) 1998 WIDE Project. + * Copyright (C) 2011 Hiroki Sato <hrs@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -52,6 +53,7 @@ #include <stdio.h> #include <syslog.h> #include <errno.h> +#include <inttypes.h> #include <netdb.h> #include <string.h> #include <search.h> @@ -130,48 +132,153 @@ dname_labelenc(char *dst, const char *src) var = def; \ } while (0) -#define ELM_MALLOC(p,error_action) \ - do { \ - p = malloc(sizeof(*p)); \ - if (p == NULL) { \ - syslog(LOG_ERR, "<%s> malloc failed: %s", \ - __func__, strerror(errno)); \ - error_action; \ - } \ - memset(p, 0, sizeof(*p)); \ - } while(0) +int +loadconfig_index(int idx) +{ + char ifname[IFNAMSIZ]; + + syslog(LOG_DEBUG, "<%s> enter", __func__); + + if (if_indextoname(idx, ifname) != NULL) + return (loadconfig_ifname(ifname)); + else + return (1); +} int -loadconfig(char *ifl_names[], const int ifl_len) +loadconfig_ifname(char *ifname) { - int i; - int idx; - int error; + struct ifinfo *ifi; + + syslog(LOG_DEBUG, "<%s> enter", __func__); + + update_ifinfo(&ifilist, UPDATE_IFINFO_ALL); + TAILQ_FOREACH(ifi, &ifilist, ifi_next) { + /* NULL means all IFs will be processed. */ + if (ifname != NULL && + strcmp(ifi->ifi_ifname, ifname) != 0) + continue; - for (i = 0; i < ifl_len; i++) { - idx = if_nametoindex(ifl_names[i]); - if (idx == 0) { + if (!ifi->ifi_persist) { + syslog(LOG_INFO, + "<%s> %s is not a target interface. " + "Ignored at this moment.", __func__, + ifi->ifi_ifname); + continue; + + } + if (ifi->ifi_ifindex == 0) { syslog(LOG_ERR, - "<%s> interface %s not found. " - "Ignored at this moment.", __func__, ifl_names[i]); + "<%s> %s not found. " + "Ignored at this moment.", __func__, + ifi->ifi_ifname); continue; } - syslog(LOG_INFO, - "<%s> loading config for %s.", __func__, ifl_names[i]); - error = getconfig(idx); - if (error) + if (getconfig(ifi) == NULL) { syslog(LOG_ERR, "<%s> invalid configuration for %s. " - "Ignored at this moment.", __func__, ifl_names[i]); + "Ignored at this moment.", __func__, + ifi->ifi_ifname); + continue; + } + } + return (0); +} + +int +rm_ifinfo_index(int idx) +{ + struct ifinfo *ifi; + + ifi = if_indextoifinfo(idx); + if (ifi == NULL) { + syslog(LOG_ERR, "<%s>: ifinfo not found (idx=%d)", + __func__, idx); + return (-1); + } + + return (rm_ifinfo(ifi)); +} + +int +rm_ifinfo(struct ifinfo *ifi) +{ + int error; + + syslog(LOG_DEBUG, "<%s> enter (%s).", __func__, ifi->ifi_ifname); + switch (ifi->ifi_state) { + case IFI_STATE_UNCONFIGURED: + return (0); + break; + default: + ifi->ifi_state = IFI_STATE_UNCONFIGURED; + syslog(LOG_DEBUG, + "<%s> ifname=%s marked as UNCONFIGURED.", + __func__, ifi->ifi_ifname); + + /* XXX: No MC leaving here becasue index is disappeared */ + + /* Inactivate timer */ + rtadvd_remove_timer(ifi->ifi_ra_timer); + ifi->ifi_ra_timer = NULL; + break; + } + + /* clean up ifi */ + if (!ifi->ifi_persist) { + TAILQ_REMOVE(&ifilist, ifi, ifi_next); + syslog(LOG_DEBUG, "<%s>: ifinfo (idx=%d) removed.", + __func__, ifi->ifi_ifindex); + free(ifi); + } else { + /* recreate an empty entry */ + update_persist_ifinfo(&ifilist, ifi->ifi_ifname); + syslog(LOG_DEBUG, "<%s>: ifname=%s is persistent.", + __func__, ifi->ifi_ifname); + } + + /* clean up rai if any */ + switch (ifi->ifi_state) { + case IFI_STATE_CONFIGURED: + if (ifi->ifi_rainfo != NULL) { + error = rm_rainfo(ifi->ifi_rainfo); + if (error) + return (error); + ifi->ifi_rainfo = NULL; + } + break; + case IFI_STATE_TRANSITIVE: + if (ifi->ifi_rainfo == ifi->ifi_rainfo_trans) { + if (ifi->ifi_rainfo != NULL) { + error = rm_rainfo(ifi->ifi_rainfo); + if (error) + return (error); + ifi->ifi_rainfo = NULL; + ifi->ifi_rainfo_trans = NULL; + } + } else { + if (ifi->ifi_rainfo != NULL) { + error = rm_rainfo(ifi->ifi_rainfo); + if (error) + return (error); + ifi->ifi_rainfo = NULL; + } + if (ifi->ifi_rainfo_trans != NULL) { + error = rm_rainfo(ifi->ifi_rainfo_trans); + if (error) + return (error); + ifi->ifi_rainfo_trans = NULL; + } + } } + syslog(LOG_DEBUG, "<%s> leave (%s).", __func__, ifi->ifi_ifname); return (0); } int -rmconfig(int idx) +rm_rainfo(struct rainfo *rai) { - struct rainfo *rai; struct prefix *pfx; struct soliciter *sol; struct rdnss *rdn; @@ -179,26 +286,16 @@ rmconfig(int idx) struct dnssl *dns; struct rtinfo *rti; - rai = if_indextorainfo(idx); - if (rai == NULL) { - syslog(LOG_ERR, "<%s>: rainfo not found (idx=%d)", - __func__, idx); - return (-1); - } + syslog(LOG_DEBUG, "<%s>: enter", __func__); TAILQ_REMOVE(&railist, rai, rai_next); - syslog(LOG_DEBUG, "<%s>: rainfo (idx=%d) removed.", - __func__, idx); - - /* Free all of allocated memories for this entry. */ - rtadvd_remove_timer(rai->rai_timer); + if (rai->rai_ifinfo != NULL) + syslog(LOG_DEBUG, "<%s>: rainfo (idx=%d) removed.", + __func__, rai->rai_ifinfo->ifi_ifindex); if (rai->rai_ra_data != NULL) free(rai->rai_ra_data); - if (rai->rai_sdl != NULL) - free(rai->rai_sdl); - while ((pfx = TAILQ_FIRST(&rai->rai_prefix)) != NULL) { TAILQ_REMOVE(&rai->rai_prefix, pfx, pfx_next); free(pfx); @@ -224,51 +321,51 @@ rmconfig(int idx) free(rti); } free(rai); - + syslog(LOG_DEBUG, "<%s>: leave", __func__); + return (0); } -int -getconfig(int idx) +struct ifinfo * +getconfig(struct ifinfo *ifi) { int stat, i; + int error; char tbuf[BUFSIZ]; struct rainfo *rai; struct rainfo *rai_old; - long val; + int32_t val; int64_t val64; char buf[BUFSIZ]; char *bp = buf; char *addr, *flagstr; - char intface[IFNAMSIZ]; - if (if_indextoname(idx, intface) == NULL) { - syslog(LOG_ERR, "<%s> invalid index number (%d)", - __func__, idx); - return (-1); - } + if (ifi == NULL) /* if does not exist */ + return (NULL); - TAILQ_FOREACH(rai_old, &railist, rai_next) - if (idx == rai_old->rai_ifindex) - break; + if (ifi->ifi_state == IFI_STATE_TRANSITIVE && + ifi->ifi_rainfo == NULL) { + syslog(LOG_INFO, "<%s> %s is shutting down. Skipped.", + __func__, ifi->ifi_ifname); + return (NULL); + } - if ((stat = agetent(tbuf, intface)) <= 0) { + if ((stat = agetent(tbuf, ifi->ifi_ifname)) <= 0) { memset(tbuf, 0, sizeof(tbuf)); syslog(LOG_INFO, "<%s> %s isn't defined in the configuration file" " or the configuration file doesn't exist." " Treat it as default", - __func__, intface); + __func__, ifi->ifi_ifname); } ELM_MALLOC(rai, exit(1)); TAILQ_INIT(&rai->rai_prefix); -#ifdef ROUTEINFO TAILQ_INIT(&rai->rai_route); -#endif TAILQ_INIT(&rai->rai_rdnss); TAILQ_INIT(&rai->rai_dnssl); TAILQ_INIT(&rai->rai_soliciter); + rai->rai_ifinfo = ifi; /* gather on-link prefixes from the network interfaces. */ if (agetflag("noifprefix")) @@ -282,25 +379,12 @@ getconfig(int idx) else rai->rai_advlinkopt = 1; if (rai->rai_advlinkopt) { - if ((rai->rai_sdl = if_nametosdl(intface)) == NULL) { + if (ifi->ifi_sdl.sdl_type == 0) { syslog(LOG_ERR, "<%s> can't get information of %s", - __func__, intface); + __func__, ifi->ifi_ifname); goto getconfig_free_rai; } - rai->rai_ifindex = rai->rai_sdl->sdl_index; - } else - rai->rai_ifindex = if_nametoindex(intface); - strncpy(rai->rai_ifname, intface, sizeof(rai->rai_ifname)); - syslog(LOG_DEBUG, - "<%s> ifindex = %d on %s", __func__, rai->rai_ifindex, - rai->rai_ifname); - - if ((rai->rai_phymtu = if_getmtu(intface)) == 0) { - rai->rai_phymtu = IPV6_MMTU; - syslog(LOG_WARNING, - "<%s> can't get interface mtu of %s. Treat as %d", - __func__, intface, IPV6_MMTU); } /* @@ -309,24 +393,24 @@ getconfig(int idx) MAYHAVE(val, "maxinterval", DEF_MAXRTRADVINTERVAL); if (val < MIN_MAXINTERVAL || val > MAX_MAXINTERVAL) { syslog(LOG_ERR, - "<%s> maxinterval (%ld) on %s is invalid " + "<%s> maxinterval (%" PRIu32 ") on %s is invalid " "(must be between %u and %u)", __func__, val, - intface, MIN_MAXINTERVAL, MAX_MAXINTERVAL); + ifi->ifi_ifname, MIN_MAXINTERVAL, MAX_MAXINTERVAL); goto getconfig_free_rai; } - rai->rai_maxinterval = (u_int)val; + rai->rai_maxinterval = (uint16_t)val; MAYHAVE(val, "mininterval", rai->rai_maxinterval/3); - if ((u_int)val < MIN_MININTERVAL || - (u_int)val > (rai->rai_maxinterval * 3) / 4) { + if ((uint16_t)val < MIN_MININTERVAL || + (uint16_t)val > (rai->rai_maxinterval * 3) / 4) { syslog(LOG_ERR, - "<%s> mininterval (%ld) on %s is invalid " + "<%s> mininterval (%" PRIu32 ") on %s is invalid " "(must be between %d and %d)", - __func__, val, intface, MIN_MININTERVAL, + __func__, val, ifi->ifi_ifname, MIN_MININTERVAL, (rai->rai_maxinterval * 3) / 4); goto getconfig_free_rai; } - rai->rai_mininterval = (u_int)val; + rai->rai_mininterval = (uint16_t)val; MAYHAVE(val, "chlim", DEF_ADVCURHOPLIMIT); rai->rai_hoplimit = val & 0xff; @@ -359,17 +443,17 @@ getconfig(int idx) rai->rai_rtpref = val & ND_RA_FLAG_RTPREF_MASK; if (rai->rai_rtpref == ND_RA_FLAG_RTPREF_RSV) { syslog(LOG_ERR, "<%s> invalid router preference (%02x) on %s", - __func__, rai->rai_rtpref, intface); + __func__, rai->rai_rtpref, ifi->ifi_ifname); goto getconfig_free_rai; } MAYHAVE(val, "rltime", rai->rai_maxinterval * 3); - if ((u_int)val && ((u_int)val < rai->rai_maxinterval || - (u_int)val > MAXROUTERLIFETIME)) { + if ((uint16_t)val && ((uint16_t)val < rai->rai_maxinterval || + (uint16_t)val > MAXROUTERLIFETIME)) { syslog(LOG_ERR, - "<%s> router lifetime (%ld) on %s is invalid " + "<%s> router lifetime (%" PRIu32 ") on %s is invalid " "(must be 0 or between %d and %d)", - __func__, val, intface, rai->rai_maxinterval, + __func__, val, ifi->ifi_ifname, rai->rai_maxinterval, MAXROUTERLIFETIME); goto getconfig_free_rai; } @@ -378,20 +462,20 @@ getconfig(int idx) MAYHAVE(val, "rtime", DEF_ADVREACHABLETIME); if (val < 0 || val > MAXREACHABLETIME) { syslog(LOG_ERR, - "<%s> reachable time (%ld) on %s is invalid " + "<%s> reachable time (%" PRIu32 ") on %s is invalid " "(must be no greater than %d)", - __func__, val, intface, MAXREACHABLETIME); + __func__, val, ifi->ifi_ifname, MAXREACHABLETIME); goto getconfig_free_rai; } - rai->rai_reachabletime = (u_int32_t)val; + rai->rai_reachabletime = (uint32_t)val; MAYHAVE(val64, "retrans", DEF_ADVRETRANSTIMER); if (val64 < 0 || val64 > 0xffffffff) { - syslog(LOG_ERR, "<%s> retrans time (%lld) on %s out of range", - __func__, (long long)val64, intface); + syslog(LOG_ERR, "<%s> retrans time (%" PRIu64 ") on %s out of range", + __func__, val64, ifi->ifi_ifname); goto getconfig_free_rai; } - rai->rai_retranstimer = (u_int32_t)val64; + rai->rai_retranstimer = (uint32_t)val64; if (agetnum("hapref") != -1 || agetnum("hatime") != -1) { syslog(LOG_ERR, @@ -433,21 +517,21 @@ getconfig(int idx) syslog(LOG_ERR, "<%s> multicast prefix (%s) must " "not be advertised on %s", - __func__, addr, intface); + __func__, addr, ifi->ifi_ifname); goto getconfig_free_pfx; } if (IN6_IS_ADDR_LINKLOCAL(&pfx->pfx_prefix)) syslog(LOG_NOTICE, "<%s> link-local prefix (%s) will be" " advertised on %s", - __func__, addr, intface); + __func__, addr, ifi->ifi_ifname); makeentry(entbuf, sizeof(entbuf), i, "prefixlen"); MAYHAVE(val, entbuf, 64); if (val < 0 || val > 128) { - syslog(LOG_ERR, "<%s> prefixlen (%ld) for %s " + syslog(LOG_ERR, "<%s> prefixlen (%" PRIu32 ") for %s " "on %s out of range", - __func__, val, addr, intface); + __func__, val, addr, ifi->ifi_ifname); goto getconfig_free_pfx; } pfx->pfx_prefixlen = (int)val; @@ -469,13 +553,13 @@ getconfig(int idx) makeentry(entbuf, sizeof(entbuf), i, "vltime"); MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME); if (val64 < 0 || val64 > 0xffffffff) { - syslog(LOG_ERR, "<%s> vltime (%lld) for " + syslog(LOG_ERR, "<%s> vltime (%" PRIu64 ") for " "%s/%d on %s is out of range", - __func__, (long long)val64, - addr, pfx->pfx_prefixlen, intface); + __func__, val64, + addr, pfx->pfx_prefixlen, ifi->ifi_ifname); goto getconfig_free_pfx; } - pfx->pfx_validlifetime = (u_int32_t)val64; + pfx->pfx_validlifetime = (uint32_t)val64; makeentry(entbuf, sizeof(entbuf), i, "vltimedecr"); if (agetflag(entbuf)) { @@ -489,13 +573,13 @@ getconfig(int idx) MAYHAVE(val64, entbuf, DEF_ADVPREFERREDLIFETIME); if (val64 < 0 || val64 > 0xffffffff) { syslog(LOG_ERR, - "<%s> pltime (%lld) for %s/%d on %s " + "<%s> pltime (%" PRIu64 ") for %s/%d on %s " "is out of range", - __func__, (long long)val64, - addr, pfx->pfx_prefixlen, intface); + __func__, val64, + addr, pfx->pfx_prefixlen, ifi->ifi_ifname); goto getconfig_free_pfx; } - pfx->pfx_preflifetime = (u_int32_t)val64; + pfx->pfx_preflifetime = (uint32_t)val64; makeentry(entbuf, sizeof(entbuf), i, "pltimedecr"); if (agetflag(entbuf)) { @@ -514,28 +598,28 @@ getconfig_free_pfx: if (rai->rai_advifprefix && rai->rai_pfxs == 0) get_prefix(rai); - MAYHAVE(val, "mtu", 0); - if (val < 0 || (u_int)val > 0xffffffff) { + MAYHAVE(val64, "mtu", 0); + if (val < 0 || val64 > 0xffffffff) { syslog(LOG_ERR, - "<%s> mtu (%ld) on %s out of range", - __func__, val, intface); + "<%s> mtu (%" PRIu64 ") on %s out of range", + __func__, val64, ifi->ifi_ifname); goto getconfig_free_rai; } - rai->rai_linkmtu = (u_int32_t)val; + rai->rai_linkmtu = (uint32_t)val64; if (rai->rai_linkmtu == 0) { char *mtustr; if ((mtustr = (char *)agetstr("mtu", &bp)) && strcmp(mtustr, "auto") == 0) - rai->rai_linkmtu = rai->rai_phymtu; + rai->rai_linkmtu = ifi->ifi_phymtu; } else if (rai->rai_linkmtu < IPV6_MMTU || - rai->rai_linkmtu > rai->rai_phymtu) { + rai->rai_linkmtu > ifi->ifi_phymtu) { syslog(LOG_ERR, - "<%s> advertised link mtu (%lu) on %s is invalid (must " + "<%s> advertised link mtu (%" PRIu32 ") on %s is invalid (must " "be between least MTU (%d) and physical link MTU (%d)", - __func__, (unsigned long)rai->rai_linkmtu, intface, - IPV6_MMTU, rai->rai_phymtu); + __func__, rai->rai_linkmtu, ifi->ifi_ifname, + IPV6_MMTU, ifi->ifi_phymtu); goto getconfig_free_rai; } @@ -550,10 +634,10 @@ getconfig_free_pfx: exit(1); } memset(&ndi, 0, sizeof(ndi)); - strncpy(ndi.ifname, intface, IFNAMSIZ); + strncpy(ndi.ifname, ifi->ifi_ifname, sizeof(ndi.ifname)); if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&ndi) < 0) syslog(LOG_INFO, "<%s> ioctl:SIOCGIFINFO_IN6 at %s: %s", - __func__, intface, strerror(errno)); + __func__, ifi->ifi_ifname, strerror(errno)); /* reflect the RA info to the host variables in kernel */ ndi.ndi.chlim = rai->rai_hoplimit; @@ -561,14 +645,13 @@ getconfig_free_pfx: ndi.ndi.basereachable = rai->rai_reachabletime; if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&ndi) < 0) syslog(LOG_INFO, "<%s> ioctl:SIOCSIFINFO_IN6 at %s: %s", - __func__, intface, strerror(errno)); + __func__, ifi->ifi_ifname, strerror(errno)); close(s); } #endif /* route information */ -#ifdef ROUTEINFO rai->rai_routes = 0; for (i = -1; i < MAXROUTE; i++) { struct rtinfo *rti; @@ -605,14 +688,14 @@ getconfig_free_pfx: syslog(LOG_ERR, "<%s> multicast route (%s) must " "not be advertised on %s", - __func__, addr, intface); + __func__, addr, ifi->ifi_ifname); goto getconfig_free_rti; } if (IN6_IS_ADDR_LINKLOCAL(&rti->prefix)) { syslog(LOG_NOTICE, "<%s> link-local route (%s) will " "be advertised on %s", - __func__, addr, intface); + __func__, addr, ifi->ifi_ifname); goto getconfig_free_rti; } #endif @@ -630,9 +713,9 @@ getconfig_free_pfx: val = 64; } if (val < 0 || val > 128) { - syslog(LOG_ERR, "<%s> prefixlen (%ld) for %s on %s " + syslog(LOG_ERR, "<%s> prefixlen (%" PRIu32 ") for %s on %s " "out of range", - __func__, val, addr, intface); + __func__, val, addr, ifi->ifi_ifname); goto getconfig_free_rti; } rti->rti_prefixlen = (int)val; @@ -668,7 +751,7 @@ getconfig_free_pfx: syslog(LOG_ERR, "<%s> invalid route preference (%02x) " "for %s/%d on %s", __func__, rti->rti_rtpref, addr, - rti->rti_prefixlen, intface); + rti->rti_prefixlen, ifi->ifi_ifname); goto getconfig_free_rti; } @@ -688,17 +771,19 @@ getconfig_free_pfx: oentbuf, entbuf); else { fprintf(stderr, "%s should be specified " - "for interface %s.\n", entbuf, intface); + "for interface %s.\n", entbuf, + ifi->ifi_ifname); val64 = rai->rai_lifetime; } } if (val64 < 0 || val64 > 0xffffffff) { - syslog(LOG_ERR, "<%s> route lifetime (%lld) for " + syslog(LOG_ERR, "<%s> route lifetime (%" PRIu64 ") for " "%s/%d on %s out of range", __func__, - (long long)val64, addr, rti->rti_prefixlen, intface); + val64, addr, rti->rti_prefixlen, + ifi->ifi_ifname); goto getconfig_free_rti; } - rti->rti_ltime = (u_int32_t)val64; + rti->rti_ltime = (uint32_t)val64; /* link into chain */ TAILQ_INSERT_TAIL(&rai->rai_route, rti, rti_next); @@ -707,7 +792,7 @@ getconfig_free_pfx: getconfig_free_rti: free(rti); } -#endif + /* DNS server and DNS search list information */ for (i = -1; i < MAXRDNSSENT ; i++) { struct rdnss *rdn; @@ -739,11 +824,11 @@ getconfig_free_rti: makeentry(entbuf, sizeof(entbuf), i, "rdnssltime"); MAYHAVE(val, entbuf, (rai->rai_maxinterval * 3 / 2)); - if ((u_int)val < rai->rai_maxinterval || - (u_int)val > rai->rai_maxinterval * 2) { - syslog(LOG_ERR, "%s (%ld) on %s is invalid " + if ((uint16_t)val < rai->rai_maxinterval || + (uint16_t)val > rai->rai_maxinterval * 2) { + syslog(LOG_ERR, "%s (%" PRIu16 ") on %s is invalid " "(must be between %d and %d)", - entbuf, val, intface, rai->rai_maxinterval, + entbuf, val, ifi->ifi_ifname, rai->rai_maxinterval, rai->rai_maxinterval * 2); goto getconfig_free_rdn; } @@ -788,11 +873,11 @@ getconfig_free_rdn: makeentry(entbuf, sizeof(entbuf), i, "dnsslltime"); MAYHAVE(val, entbuf, (rai->rai_maxinterval * 3 / 2)); - if ((u_int)val < rai->rai_maxinterval || - (u_int)val > rai->rai_maxinterval * 2) { - syslog(LOG_ERR, "%s (%ld) on %s is invalid " + if ((uint16_t)val < rai->rai_maxinterval || + (uint16_t)val > rai->rai_maxinterval * 2) { + syslog(LOG_ERR, "%s (%" PRIu16 ") on %s is invalid " "(must be between %d and %d)", - entbuf, val, intface, rai->rai_maxinterval, + entbuf, val, ifi->ifi_ifname, rai->rai_maxinterval, rai->rai_maxinterval * 2); goto getconfig_free_dns; } @@ -816,36 +901,108 @@ getconfig_free_dns: * Before the removal, RDNSS and DNSSL options with * zero-lifetime will be sent. */ - if (rai_old != NULL) { - const int retrans = MAX_FINAL_RTR_ADVERTISEMENTS; - struct rdnss *rdn; - struct dnssl *dns; + switch (ifi->ifi_state) { + case IFI_STATE_UNCONFIGURED: + /* UNCONFIGURED -> TRANSITIVE */ + + error = sock_mc_join(&sock, ifi->ifi_ifindex); + if (error) + exit(1); + + ifi->ifi_state = IFI_STATE_TRANSITIVE; + ifi->ifi_burstcount = MAX_INITIAL_RTR_ADVERTISEMENTS; + ifi->ifi_burstinterval = MAX_INITIAL_RTR_ADVERT_INTERVAL; - rai_old->rai_lifetime = 0; - TAILQ_FOREACH(rdn, &rai_old->rai_rdnss, rd_next) - rdn->rd_ltime = 0; - TAILQ_FOREACH(dns, &rai_old->rai_dnssl, dn_next) - dns->dn_ltime = 0; + /* The same two rai mean initial burst */ + ifi->ifi_rainfo = rai; + ifi->ifi_rainfo_trans = rai; + TAILQ_INSERT_TAIL(&railist, rai, rai_next); - make_packet(rai_old); - for (i = 0; i < retrans; i++) { - ra_output(rai_old); - sleep(MIN_DELAY_BETWEEN_RAS); + if (ifi->ifi_ra_timer == NULL) + ifi->ifi_ra_timer = rtadvd_add_timer(ra_timeout, + ra_timer_update, ifi, ifi); + ra_timer_update(ifi, &ifi->ifi_ra_timer->rat_tm); + rtadvd_set_timer(&ifi->ifi_ra_timer->rat_tm, + ifi->ifi_ra_timer); + + syslog(LOG_DEBUG, + "<%s> ifname=%s marked as TRANSITIVE (initial burst).", + __func__, ifi->ifi_ifname); + break; + case IFI_STATE_CONFIGURED: + /* CONFIGURED -> TRANSITIVE */ + rai_old = ifi->ifi_rainfo; + if (rai_old == NULL) { + syslog(LOG_ERR, + "<%s> ifi_rainfo is NULL" + " in IFI_STATE_CONFIGURED.", __func__); + ifi = NULL; + break; + } else { + struct rdnss *rdn; + struct dnssl *dns; + + rai_old->rai_lifetime = 0; + TAILQ_FOREACH(rdn, &rai_old->rai_rdnss, rd_next) + rdn->rd_ltime = 0; + TAILQ_FOREACH(dns, &rai_old->rai_dnssl, dn_next) + dns->dn_ltime = 0; + + ifi->ifi_rainfo_trans = rai_old; + ifi->ifi_state = IFI_STATE_TRANSITIVE; + ifi->ifi_burstcount = MAX_FINAL_RTR_ADVERTISEMENTS; + ifi->ifi_burstinterval = MIN_DELAY_BETWEEN_RAS; + + ra_timer_update(ifi, &ifi->ifi_ra_timer->rat_tm); + rtadvd_set_timer(&ifi->ifi_ra_timer->rat_tm, + ifi->ifi_ra_timer); + + syslog(LOG_DEBUG, + "<%s> ifname=%s marked as TRANSITIVE" + " (transitional burst)", + __func__, ifi->ifi_ifname); + } + ifi->ifi_rainfo = rai; + TAILQ_INSERT_TAIL(&railist, rai, rai_next); + break; + case IFI_STATE_TRANSITIVE: + if (ifi->ifi_rainfo != NULL) { + if (ifi->ifi_rainfo == ifi->ifi_rainfo_trans) { + /* Reinitialize initial burst */ + rm_rainfo(ifi->ifi_rainfo); + ifi->ifi_rainfo = rai; + ifi->ifi_rainfo_trans = rai; + ifi->ifi_burstcount = + MAX_INITIAL_RTR_ADVERTISEMENTS; + ifi->ifi_burstinterval = + MAX_INITIAL_RTR_ADVERT_INTERVAL; + } else { + /* Replace ifi_rainfo with the new one */ + rm_rainfo(ifi->ifi_rainfo); + ifi->ifi_rainfo = rai; + } + TAILQ_INSERT_TAIL(&railist, rai, rai_next); + + ra_timer_update(ifi, &ifi->ifi_ra_timer->rat_tm); + rtadvd_set_timer(&ifi->ifi_ra_timer->rat_tm, + ifi->ifi_ra_timer); + } else { + /* XXX: NOTREACHED. Being shut down. */ + syslog(LOG_ERR, + "<%s> %s is shutting down. Skipped.", + __func__, ifi->ifi_ifname); + rm_rainfo(rai); + + return (NULL); } - rmconfig(idx); + break; } - TAILQ_INSERT_TAIL(&railist, rai, rai_next); - /* set timer */ - rai->rai_timer = rtadvd_add_timer(ra_timeout, ra_timer_update, - rai, rai); - ra_timer_update((void *)rai, &rai->rai_timer->rat_tm); - rtadvd_set_timer(&rai->rai_timer->rat_tm, rai->rai_timer); + return (ifi); - return (0); getconfig_free_rai: free(rai); - return (-1); + return (NULL); } void @@ -854,8 +1011,9 @@ get_prefix(struct rainfo *rai) struct ifaddrs *ifap, *ifa; struct prefix *pfx; struct in6_addr *a; - u_char *p, *ep, *m, *lim; - u_char ntopbuf[INET6_ADDRSTRLEN]; + struct ifinfo *ifi; + char *p, *ep, *m, *lim; + char ntopbuf[INET6_ADDRSTRLEN]; if (getifaddrs(&ifap) < 0) { syslog(LOG_ERR, @@ -863,20 +1021,22 @@ get_prefix(struct rainfo *rai) __func__); exit(1); } + ifi = rai->rai_ifinfo; for (ifa = ifap; ifa; ifa = ifa->ifa_next) { int plen; - if (strcmp(ifa->ifa_name, rai->rai_ifname) != 0) + if (strcmp(ifa->ifa_name, ifi->ifi_ifname) != 0) continue; if (ifa->ifa_addr->sa_family != AF_INET6) continue; a = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; if (IN6_IS_ADDR_LINKLOCAL(a)) continue; + /* get prefix length */ - m = (u_char *)&((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; - lim = (u_char *)(ifa->ifa_netmask) + ifa->ifa_netmask->sa_len; + m = (char *)&((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; + lim = (char *)(ifa->ifa_netmask) + ifa->ifa_netmask->sa_len; plen = prefixlen(m, lim); if (plen <= 0 || plen > 128) { syslog(LOG_ERR, "<%s> failed to get prefixlen " @@ -897,8 +1057,8 @@ get_prefix(struct rainfo *rai) /* set prefix, sweep bits outside of prefixlen */ pfx->pfx_prefixlen = plen; memcpy(&pfx->pfx_prefix, a, sizeof(*a)); - p = (u_char *)&pfx->pfx_prefix; - ep = (u_char *)(&pfx->pfx_prefix + 1); + p = (char *)&pfx->pfx_prefix; + ep = (char *)(&pfx->pfx_prefix + 1); while (m < lim && p < ep) *p++ &= *m++; while (p < ep) @@ -910,7 +1070,7 @@ get_prefix(struct rainfo *rai) } syslog(LOG_DEBUG, "<%s> add %s/%d to prefix list on %s", - __func__, ntopbuf, pfx->pfx_prefixlen, rai->rai_ifname); + __func__, ntopbuf, pfx->pfx_prefixlen, ifi->ifi_ifname); /* set other fields with protocol defaults */ pfx->pfx_validlifetime = DEF_ADVVALIDLIFETIME; @@ -951,8 +1111,10 @@ static void add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr) { struct prefix *pfx; - u_char ntopbuf[INET6_ADDRSTRLEN]; + struct ifinfo *ifi; + char ntopbuf[INET6_ADDRSTRLEN]; + ifi = rai->rai_ifinfo; ELM_MALLOC(pfx, return); pfx->pfx_prefix = ipr->ipr_prefix.sin6_addr; pfx->pfx_prefixlen = ipr->ipr_plen; @@ -968,11 +1130,9 @@ add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr) syslog(LOG_DEBUG, "<%s> new prefix %s/%d was added on %s", __func__, inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, ntopbuf, - sizeof(ntopbuf)), ipr->ipr_plen, rai->rai_ifname); + sizeof(ntopbuf)), ipr->ipr_plen, ifi->ifi_ifname); - /* reconstruct the packet */ rai->rai_pfxs++; - make_packet(rai); } /* @@ -983,30 +1143,34 @@ add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr) void delete_prefix(struct prefix *pfx) { - u_char ntopbuf[INET6_ADDRSTRLEN]; struct rainfo *rai; + struct ifinfo *ifi; + char ntopbuf[INET6_ADDRSTRLEN]; rai = pfx->pfx_rainfo; + ifi = rai->rai_ifinfo; TAILQ_REMOVE(&rai->rai_prefix, pfx, pfx_next); syslog(LOG_DEBUG, "<%s> prefix %s/%d was deleted on %s", __func__, inet_ntop(AF_INET6, &pfx->pfx_prefix, ntopbuf, - sizeof(ntopbuf)), pfx->pfx_prefixlen, rai->rai_ifname); + sizeof(ntopbuf)), pfx->pfx_prefixlen, ifi->ifi_ifname); if (pfx->pfx_timer) rtadvd_remove_timer(pfx->pfx_timer); free(pfx); + rai->rai_pfxs--; - make_packet(rai); } void invalidate_prefix(struct prefix *pfx) { - u_char ntopbuf[INET6_ADDRSTRLEN]; struct timeval timo; struct rainfo *rai; + struct ifinfo *ifi; + char ntopbuf[INET6_ADDRSTRLEN]; rai = pfx->pfx_rainfo; + ifi = rai->rai_ifinfo; if (pfx->pfx_timer) { /* sanity check */ syslog(LOG_ERR, "<%s> assumption failure: timer already exists", @@ -1017,7 +1181,7 @@ invalidate_prefix(struct prefix *pfx) syslog(LOG_DEBUG, "<%s> prefix %s/%d was invalidated on %s, " "will expire in %ld seconds", __func__, inet_ntop(AF_INET6, &pfx->pfx_prefix, ntopbuf, sizeof(ntopbuf)), - pfx->pfx_prefixlen, rai->rai_ifname, (long)prefix_timo); + pfx->pfx_prefixlen, ifi->ifi_ifname, (long)prefix_timo); /* set the expiration timer */ pfx->pfx_timer = rtadvd_add_timer(prefix_timeout, NULL, pfx, NULL); @@ -1043,10 +1207,12 @@ prefix_timeout(void *arg) void update_prefix(struct prefix *pfx) { - u_char ntopbuf[INET6_ADDRSTRLEN]; struct rainfo *rai; + struct ifinfo *ifi; + char ntopbuf[INET6_ADDRSTRLEN]; rai = pfx->pfx_rainfo; + ifi = rai->rai_ifinfo; if (pfx->pfx_timer == NULL) { /* sanity check */ syslog(LOG_ERR, "<%s> assumption failure: timer does not exist", @@ -1056,7 +1222,7 @@ update_prefix(struct prefix *pfx) syslog(LOG_DEBUG, "<%s> prefix %s/%d was re-enabled on %s", __func__, inet_ntop(AF_INET6, &pfx->pfx_prefix, ntopbuf, - sizeof(ntopbuf)), pfx->pfx_prefixlen, rai->rai_ifname); + sizeof(ntopbuf)), pfx->pfx_prefixlen, ifi->ifi_ifname); /* stop the expiration timer */ rtadvd_remove_timer(pfx->pfx_timer); @@ -1091,7 +1257,7 @@ init_prefix(struct in6_prefixreq *ipr) /* omit other field initialization */ } else if (ipr->ipr_origin < PR_ORIG_RR) { - u_char ntopbuf[INET6_ADDRSTRLEN]; + char ntopbuf[INET6_ADDRSTRLEN]; syslog(LOG_WARNING, "<%s> Added prefix(%s)'s origin %d is" "lower than PR_ORIG_RR(router renumbering)." @@ -1143,25 +1309,25 @@ make_packet(struct rainfo *rai) struct nd_router_advert *ra; struct nd_opt_prefix_info *ndopt_pi; struct nd_opt_mtu *ndopt_mtu; -#ifdef ROUTEINFO struct nd_opt_route_info *ndopt_rti; struct rtinfo *rti; -#endif struct nd_opt_rdnss *ndopt_rdnss; struct rdnss *rdn; struct nd_opt_dnssl *ndopt_dnssl; struct dnssl *dns; size_t len; struct prefix *pfx; + struct ifinfo *ifi; + ifi = rai->rai_ifinfo; /* calculate total length */ packlen = sizeof(struct nd_router_advert); if (rai->rai_advlinkopt) { - if ((lladdroptlen = lladdropt_length(rai->rai_sdl)) == 0) { + if ((lladdroptlen = lladdropt_length(&ifi->ifi_sdl)) == 0) { syslog(LOG_INFO, "<%s> link-layer address option has" " null length on %s. Treat as not included.", - __func__, rai->rai_ifname); + __func__, ifi->ifi_ifname); rai->rai_advlinkopt = 0; } packlen += lladdroptlen; @@ -1170,11 +1336,11 @@ make_packet(struct rainfo *rai) packlen += sizeof(struct nd_opt_prefix_info) * rai->rai_pfxs; if (rai->rai_linkmtu) packlen += sizeof(struct nd_opt_mtu); -#ifdef ROUTEINFO + TAILQ_FOREACH(rti, &rai->rai_route, rti_next) packlen += sizeof(struct nd_opt_route_info) + ((rti->rti_prefixlen + 0x3f) >> 6) * 8; -#endif + TAILQ_FOREACH(rdn, &rai->rai_rdnss, rd_next) { struct rdnss_addr *rdna; @@ -1217,7 +1383,7 @@ make_packet(struct rainfo *rai) ra->nd_ra_type = ND_ROUTER_ADVERT; ra->nd_ra_code = 0; ra->nd_ra_cksum = 0; - ra->nd_ra_curhoplimit = (u_int8_t)(0xff & rai->rai_hoplimit); + ra->nd_ra_curhoplimit = (uint8_t)(0xff & rai->rai_hoplimit); ra->nd_ra_flags_reserved = 0; /* just in case */ /* * XXX: the router preference field, which is a 2-bit field, should be @@ -1234,7 +1400,7 @@ make_packet(struct rainfo *rai) buf += sizeof(*ra); if (rai->rai_advlinkopt) { - lladdropt_fill(rai->rai_sdl, (struct nd_opt_hdr *)buf); + lladdropt_fill(&ifi->ifi_sdl, (struct nd_opt_hdr *)buf); buf += lladdroptlen; } @@ -1248,7 +1414,7 @@ make_packet(struct rainfo *rai) } TAILQ_FOREACH(pfx, &rai->rai_prefix, pfx_next) { - u_int32_t vltime, pltime; + uint32_t vltime, pltime; struct timeval now; ndopt_pi = (struct nd_opt_prefix_info *)buf; @@ -1270,7 +1436,7 @@ make_packet(struct rainfo *rai) if (pfx->pfx_vltimeexpire == 0) vltime = pfx->pfx_validlifetime; else - vltime = (pfx->pfx_vltimeexpire > now.tv_sec) ? + vltime = ((time_t)pfx->pfx_vltimeexpire > now.tv_sec) ? pfx->pfx_vltimeexpire - now.tv_sec : 0; } if (pfx->pfx_timer) @@ -1279,7 +1445,7 @@ make_packet(struct rainfo *rai) if (pfx->pfx_pltimeexpire == 0) pltime = pfx->pfx_preflifetime; else - pltime = (pfx->pfx_pltimeexpire > now.tv_sec) ? + pltime = ((time_t)pfx->pfx_pltimeexpire > now.tv_sec) ? pfx->pfx_pltimeexpire - now.tv_sec : 0; } if (vltime < pltime) { @@ -1297,9 +1463,8 @@ make_packet(struct rainfo *rai) buf += sizeof(struct nd_opt_prefix_info); } -#ifdef ROUTEINFO TAILQ_FOREACH(rti, &rai->rai_route, rti_next) { - u_int8_t psize = (rti->rti_prefixlen + 0x3f) >> 6; + uint8_t psize = (rti->rti_prefixlen + 0x3f) >> 6; ndopt_rti = (struct nd_opt_route_info *)buf; ndopt_rti->nd_opt_rti_type = ND_OPT_ROUTE_INFO; @@ -1310,7 +1475,7 @@ make_packet(struct rainfo *rai) memcpy(ndopt_rti + 1, &rti->rti_prefix, psize * 8); buf += sizeof(struct nd_opt_route_info) + psize * 8; } -#endif + TAILQ_FOREACH(rdn, &rai->rai_rdnss, rd_next) { struct rdnss_addr *rdna; @@ -1331,6 +1496,7 @@ make_packet(struct rainfo *rai) syslog(LOG_DEBUG, "<%s>: nd_opt_dnss_len = %d", __func__, ndopt_rdnss->nd_opt_rdnss_len); } + TAILQ_FOREACH(dns, &rai->rai_dnssl, dn_next) { struct dnssl_addr *dnsa; |
