diff options
Diffstat (limited to 'sysdep/linux')
| -rw-r--r-- | sysdep/linux/Makefile | 4 | ||||
| -rw-r--r-- | sysdep/linux/Modules | 5 | ||||
| -rw-r--r-- | sysdep/linux/netlink.c | 433 | ||||
| -rw-r--r-- | sysdep/linux/sysio.h | 2 |
4 files changed, 277 insertions, 167 deletions
diff --git a/sysdep/linux/Makefile b/sysdep/linux/Makefile new file mode 100644 index 00000000..23cf1d9d --- /dev/null +++ b/sysdep/linux/Makefile @@ -0,0 +1,4 @@ +src := netlink.c +obj := $(src-o-files) +$(all-daemon) +$(conf-y-targets): $(s)netlink.Y diff --git a/sysdep/linux/Modules b/sysdep/linux/Modules deleted file mode 100644 index 940660b6..00000000 --- a/sysdep/linux/Modules +++ /dev/null @@ -1,5 +0,0 @@ -krt-sys.h -netlink.c -netlink.Y -sysio.h -syspriv.h diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c index b42e7b6f..8146072b 100644 --- a/sysdep/linux/netlink.c +++ b/sysdep/linux/netlink.c @@ -6,6 +6,7 @@ * Can be freely distributed and used under the terms of the GNU GPL. */ +#include <alloca.h> #include <stdio.h> #include <unistd.h> #include <fcntl.h> @@ -20,9 +21,9 @@ #include "nest/protocol.h" #include "nest/iface.h" #include "lib/alloca.h" -#include "lib/timer.h" -#include "lib/unix.h" -#include "lib/krt.h" +#include "sysdep/unix/timer.h" +#include "sysdep/unix/unix.h" +#include "sysdep/unix/krt.h" #include "lib/socket.h" #include "lib/string.h" #include "lib/hash.h" @@ -249,18 +250,16 @@ static struct nl_want_attrs ifla_attr_want[BIRD_IFLA_MAX] = { #define BIRD_IFA_MAX (IFA_ANYCAST+1) -#ifndef IPV6 static struct nl_want_attrs ifa_attr_want4[BIRD_IFA_MAX] = { [IFA_ADDRESS] = { 1, 1, sizeof(ip4_addr) }, [IFA_LOCAL] = { 1, 1, sizeof(ip4_addr) }, [IFA_BROADCAST] = { 1, 1, sizeof(ip4_addr) }, }; -#else + static struct nl_want_attrs ifa_attr_want6[BIRD_IFA_MAX] = { [IFA_ADDRESS] = { 1, 1, sizeof(ip6_addr) }, [IFA_LOCAL] = { 1, 1, sizeof(ip6_addr) }, }; -#endif #define BIRD_RTA_MAX (RTA_TABLE+1) @@ -269,7 +268,6 @@ static struct nl_want_attrs mpnh_attr_want4[BIRD_RTA_MAX] = { [RTA_GATEWAY] = { 1, 1, sizeof(ip4_addr) }, }; -#ifndef IPV6 static struct nl_want_attrs rtm_attr_want4[BIRD_RTA_MAX] = { [RTA_DST] = { 1, 1, sizeof(ip4_addr) }, [RTA_OIF] = { 1, 1, sizeof(u32) }, @@ -281,7 +279,7 @@ static struct nl_want_attrs rtm_attr_want4[BIRD_RTA_MAX] = { [RTA_FLOW] = { 1, 1, sizeof(u32) }, [RTA_TABLE] = { 1, 1, sizeof(u32) }, }; -#else + static struct nl_want_attrs rtm_attr_want6[BIRD_RTA_MAX] = { [RTA_DST] = { 1, 1, sizeof(ip6_addr) }, [RTA_IIF] = { 1, 1, sizeof(u32) }, @@ -293,7 +291,6 @@ static struct nl_want_attrs rtm_attr_want6[BIRD_RTA_MAX] = { [RTA_FLOW] = { 1, 1, sizeof(u32) }, [RTA_TABLE] = { 1, 1, sizeof(u32) }, }; -#endif static int @@ -309,7 +306,7 @@ nl_parse_attrs(struct rtattr *a, struct nl_want_attrs *want, struct rtattr **k, if (want[a->rta_type].checksize && (RTA_PAYLOAD(a) != want[a->rta_type].size)) { - log(L_ERR "nl_parse_attrs: Malformed message received"); + log(L_ERR "nl_parse_attrs: Malformed attribute received"); return 0; } @@ -334,6 +331,13 @@ static inline ip4_addr rta_get_ip4(struct rtattr *a) static inline ip6_addr rta_get_ip6(struct rtattr *a) { return ip6_ntoh(*(ip6_addr *) RTA_DATA(a)); } +static inline ip_addr rta_get_ipa(struct rtattr *a) +{ + if (RTA_PAYLOAD(a) == sizeof(ip4_addr)) + return ipa_from_ip4(rta_get_ip4(a)); + else + return ipa_from_ip6(rta_get_ip6(a)); +} struct rtattr * nl_add_attr(struct nlmsghdr *h, uint bufsize, uint code, const void *data, uint dlen) @@ -356,16 +360,32 @@ nl_add_attr(struct nlmsghdr *h, uint bufsize, uint code, const void *data, uint } static inline void -nl_add_attr_u32(struct nlmsghdr *h, unsigned bufsize, int code, u32 data) +nl_add_attr_u32(struct nlmsghdr *h, uint bufsize, int code, u32 data) { nl_add_attr(h, bufsize, code, &data, 4); } static inline void -nl_add_attr_ipa(struct nlmsghdr *h, unsigned bufsize, int code, ip_addr ipa) +nl_add_attr_ip4(struct nlmsghdr *h, uint bufsize, int code, ip4_addr ip4) +{ + ip4 = ip4_hton(ip4); + nl_add_attr(h, bufsize, code, &ip4, sizeof(ip4)); +} + +static inline void +nl_add_attr_ip6(struct nlmsghdr *h, uint bufsize, int code, ip6_addr ip6) { - ipa_hton(ipa); - nl_add_attr(h, bufsize, code, &ipa, sizeof(ipa)); + ip6 = ip6_hton(ip6); + nl_add_attr(h, bufsize, code, &ip6, sizeof(ip6)); +} + +static inline void +nl_add_attr_ipa(struct nlmsghdr *h, uint bufsize, int code, ip_addr ipa) +{ + if (ipa_is_ip4(ipa)) + nl_add_attr_ip4(h, bufsize, code, ipa_to_ip4(ipa)); + else + nl_add_attr_ip6(h, bufsize, code, ipa_to_ip6(ipa)); } static inline struct rtattr * @@ -401,7 +421,7 @@ nl_close_nexthop(struct nlmsghdr *h, struct rtnexthop *nh) } static void -nl_add_multipath(struct nlmsghdr *h, unsigned bufsize, struct mpnh *nh) +nl_add_multipath(struct nlmsghdr *h, uint bufsize, struct mpnh *nh) { struct rtattr *a = nl_open_attr(h, bufsize, RTA_MULTIPATH); @@ -463,12 +483,12 @@ nl_parse_multipath(struct krt_proto *p, struct rtattr *ra) nl_parse_attrs(RTNH_DATA(nh), mpnh_attr_want4, a, sizeof(a)); if (a[RTA_GATEWAY]) { - memcpy(&rv->gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ip_addr)); - ipa_ntoh(rv->gw); + rv->gw = rta_get_ipa(a[RTA_GATEWAY]); - neighbor *ng = neigh_find2(&p->p, &rv->gw, rv->iface, - (nh->rtnh_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); - if (!ng || (ng->scope == SCOPE_HOST)) + neighbor *nbr; + nbr = neigh_find2(&p->p, &rv->gw, rv->iface, + (nh->rtnh_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); + if (!nbr || (nbr->scope == SCOPE_HOST)) return NULL; } else @@ -603,40 +623,20 @@ nl_parse_link(struct nlmsghdr *h, int scan) } static void -nl_parse_addr(struct nlmsghdr *h, int scan) +nl_parse_addr4(struct ifaddrmsg *i, int scan, int new) { - struct ifaddrmsg *i; struct rtattr *a[BIRD_IFA_MAX]; - int new = h->nlmsg_type == RTM_NEWADDR; - struct ifa ifa; struct iface *ifi; int scope; - if (!(i = nl_checkin(h, sizeof(*i)))) + if (!nl_parse_attrs(IFA_RTA(i), ifa_attr_want4, a, sizeof(a))) return; - switch (i->ifa_family) + if (!a[IFA_LOCAL]) { -#ifndef IPV6 - case AF_INET: - if (!nl_parse_attrs(IFA_RTA(i), ifa_attr_want4, a, sizeof(a))) - return; - if (!a[IFA_LOCAL]) - { - log(L_ERR "KIF: Malformed message received (missing IFA_LOCAL)"); - return; - } - break; -#else - case AF_INET6: - if (!nl_parse_attrs(IFA_RTA(i), ifa_attr_want6, a, sizeof(a))) - return; - break; -#endif - default: - return; + log(L_ERR "KIF: Malformed message received (missing IFA_LOCAL)"); + return; } - if (!a[IFA_ADDRESS]) { log(L_ERR "KIF: Malformed message received (missing IFA_ADDRESS)"); @@ -650,59 +650,57 @@ nl_parse_addr(struct nlmsghdr *h, int scan) return; } + struct ifa ifa; bzero(&ifa, sizeof(ifa)); ifa.iface = ifi; if (i->ifa_flags & IFA_F_SECONDARY) ifa.flags |= IA_SECONDARY; - /* IFA_LOCAL can be unset for IPv6 interfaces */ - memcpy(&ifa.ip, RTA_DATA(a[IFA_LOCAL] ? : a[IFA_ADDRESS]), sizeof(ifa.ip)); - ipa_ntoh(ifa.ip); - ifa.pxlen = i->ifa_prefixlen; - if (i->ifa_prefixlen > BITS_PER_IP_ADDRESS) + ifa.ip = rta_get_ipa(a[IFA_LOCAL]); + + if (i->ifa_prefixlen > IP4_MAX_PREFIX_LENGTH) { log(L_ERR "KIF: Invalid prefix length for interface %s: %d", ifi->name, i->ifa_prefixlen); new = 0; } - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS) + if (i->ifa_prefixlen == IP4_MAX_PREFIX_LENGTH) { - ip_addr addr; - memcpy(&addr, RTA_DATA(a[IFA_ADDRESS]), sizeof(addr)); - ipa_ntoh(addr); - ifa.prefix = ifa.brd = addr; + ifa.brd = rta_get_ipa(a[IFA_ADDRESS]); + net_fill_ip4(&ifa.prefix, rta_get_ip4(a[IFA_ADDRESS]), i->ifa_prefixlen); /* It is either a host address or a peer address */ - if (ipa_equal(ifa.ip, addr)) + if (ipa_equal(ifa.ip, ifa.brd)) ifa.flags |= IA_HOST; else { ifa.flags |= IA_PEER; - ifa.opposite = addr; + ifa.opposite = ifa.brd; } } else { - ip_addr netmask = ipa_mkmask(ifa.pxlen); - ifa.prefix = ipa_and(ifa.ip, netmask); - ifa.brd = ipa_or(ifa.ip, ipa_not(netmask)); - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 1) + net_fill_ip4(&ifa.prefix, ipa_to_ip4(ifa.ip), i->ifa_prefixlen); + net_normalize(&ifa.prefix); + + if (i->ifa_prefixlen == IP4_MAX_PREFIX_LENGTH - 1) ifa.opposite = ipa_opposite_m1(ifa.ip); -#ifndef IPV6 - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 2) + if (i->ifa_prefixlen == IP4_MAX_PREFIX_LENGTH - 2) ifa.opposite = ipa_opposite_m2(ifa.ip); if ((ifi->flags & IF_BROADCAST) && a[IFA_BROADCAST]) { - ip_addr xbrd; - memcpy(&xbrd, RTA_DATA(a[IFA_BROADCAST]), sizeof(xbrd)); - ipa_ntoh(xbrd); - if (ipa_equal(xbrd, ifa.prefix) || ipa_equal(xbrd, ifa.brd)) - ifa.brd = xbrd; + ip4_addr xbrd = rta_get_ip4(a[IFA_BROADCAST]); + ip4_addr ybrd = ip4_or(ipa_to_ip4(ifa.ip), ip4_not(ip4_mkmask(i->ifa_prefixlen))); + + if (ip4_equal(xbrd, net4_prefix(&ifa.prefix)) || ip4_equal(xbrd, ybrd)) + ifa.brd = ipa_from_ip4(xbrd); else if (ifi->flags & IF_TMP_DOWN) /* Complain only during the first scan */ - log(L_ERR "KIF: Invalid broadcast address %I for %s", xbrd, ifi->name); + { + log(L_ERR "KIF: Invalid broadcast address %I4 for %s", xbrd, ifi->name); + ifa.brd = ipa_from_ip4(ybrd); + } } -#endif } scope = ipa_classify(ifa.ip); @@ -713,10 +711,93 @@ nl_parse_addr(struct nlmsghdr *h, int scan) } ifa.scope = scope & IADDR_SCOPE_MASK; - DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %I/%d, brd %I, opp %I\n", + DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %N, brd %I, opp %I\n", + ifi->index, ifi->name, + new ? "added" : "removed", + ifa.ip, ifa.flags, ifa.prefix, ifa.brd, ifa.opposite); + + if (new) + ifa_update(&ifa); + else + ifa_delete(&ifa); + + if (!scan) + if_end_partial_update(ifi); +} + +static void +nl_parse_addr6(struct ifaddrmsg *i, int scan, int new) +{ + struct rtattr *a[BIRD_IFA_MAX]; + struct iface *ifi; + int scope; + + if (!nl_parse_attrs(IFA_RTA(i), ifa_attr_want6, a, sizeof(a))) + return; + + if (!a[IFA_ADDRESS]) + { + log(L_ERR "KIF: Malformed message received (missing IFA_ADDRESS)"); + return; + } + + ifi = if_find_by_index(i->ifa_index); + if (!ifi) + { + log(L_ERR "KIF: Received address message for unknown interface %d", i->ifa_index); + return; + } + + struct ifa ifa; + bzero(&ifa, sizeof(ifa)); + ifa.iface = ifi; + if (i->ifa_flags & IFA_F_SECONDARY) + ifa.flags |= IA_SECONDARY; + + /* IFA_LOCAL can be unset for IPv6 interfaces */ + + ifa.ip = rta_get_ipa(a[IFA_LOCAL] ? : a[IFA_ADDRESS]); + + if (i->ifa_prefixlen > IP6_MAX_PREFIX_LENGTH) + { + log(L_ERR "KIF: Invalid prefix length for interface %s: %d", ifi->name, i->ifa_prefixlen); + new = 0; + } + if (i->ifa_prefixlen == IP6_MAX_PREFIX_LENGTH) + { + ifa.brd = rta_get_ipa(a[IFA_ADDRESS]); + net_fill_ip6(&ifa.prefix, rta_get_ip6(a[IFA_ADDRESS]), i->ifa_prefixlen); + + /* It is either a host address or a peer address */ + if (ipa_equal(ifa.ip, ifa.brd)) + ifa.flags |= IA_HOST; + else + { + ifa.flags |= IA_PEER; + ifa.opposite = ifa.brd; + } + } + else + { + net_fill_ip6(&ifa.prefix, ipa_to_ip6(ifa.ip), i->ifa_prefixlen); + net_normalize(&ifa.prefix); + + if (i->ifa_prefixlen == IP6_MAX_PREFIX_LENGTH - 1) + ifa.opposite = ipa_opposite_m1(ifa.ip); + } + + scope = ipa_classify(ifa.ip); + if (scope < 0) + { + log(L_ERR "KIF: Invalid interface address %I for %s", ifa.ip, ifi->name); + return; + } + ifa.scope = scope & IADDR_SCOPE_MASK; + + DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %N, brd %I, opp %I\n", ifi->index, ifi->name, new ? "added" : "removed", - ifa.ip, ifa.flags, ifa.prefix, ifa.pxlen, ifa.brd, ifa.opposite); + ifa.ip, ifa.flags, ifa.prefix, ifa.brd, ifa.opposite); if (new) ifa_update(&ifa); @@ -727,6 +808,26 @@ nl_parse_addr(struct nlmsghdr *h, int scan) if_end_partial_update(ifi); } +static void +nl_parse_addr(struct nlmsghdr *h, int scan) +{ + struct ifaddrmsg *i; + + if (!(i = nl_checkin(h, sizeof(*i)))) + return; + + int new = (h->nlmsg_type == RTM_NEWADDR); + + switch (i->ifa_family) + { + case AF_INET: + return nl_parse_addr4(i, scan, new); + + case AF_INET6: + return nl_parse_addr6(i, scan, new); + } +} + void kif_do_scan(struct kif_proto *p UNUSED) { @@ -741,7 +842,14 @@ kif_do_scan(struct kif_proto *p UNUSED) else log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type); - nl_request_dump(BIRD_AF, RTM_GETADDR); + nl_request_dump(AF_INET, RTM_GETADDR); + while (h = nl_get_scan()) + if (h->nlmsg_type == RTM_NEWADDR || h->nlmsg_type == RTM_DELADDR) + nl_parse_addr(h, 1); + else + log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type); + + nl_request_dump(AF_INET6, RTM_GETADDR); while (h = nl_get_scan()) if (h->nlmsg_type == RTM_NEWADDR || h->nlmsg_type == RTM_DELADDR) nl_parse_addr(h, 1); @@ -763,10 +871,10 @@ krt_table_id(struct krt_proto *p) static HASH(struct krt_proto) nl_table_map; -#define RTH_FN(k) u32_hash(k) -#define RTH_EQ(k1,k2) k1 == k2 -#define RTH_KEY(p) krt_table_id(p) -#define RTH_NEXT(p) p->sys.hash_next +#define RTH_KEY(p) p->af, krt_table_id(p) +#define RTH_NEXT(p) p->sys.hash_next +#define RTH_EQ(a1,i1,a2,i2) a1 == a2 && i1 == i2 +#define RTH_FN(a,i) a ^ u32_hash(i) #define RTH_REHASH rth_rehash #define RTH_PARAMS /8, *2, 2, 2, 6, 20 @@ -813,44 +921,49 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new) eattr *ea; net *net = e->net; rta *a = e->attrs; + int bufsize = 128 + KRT_METRICS_MAX*8 + nh_bufsize(a->nexthops); + struct { struct nlmsghdr h; struct rtmsg r; - char buf[128 + KRT_METRICS_MAX*8 + nh_bufsize(a->nexthops)]; - } r; + char buf[0]; + } *r; + + int rsize = sizeof(*r) + bufsize; + r = alloca(rsize); - DBG("nl_send_route(%I/%d,new=%d)\n", net->n.prefix, net->n.pxlen, new); + DBG("nl_send_route(%N,new=%d)\n", net->n.addr, new); - bzero(&r.h, sizeof(r.h)); - bzero(&r.r, sizeof(r.r)); - r.h.nlmsg_type = new ? RTM_NEWROUTE : RTM_DELROUTE; - r.h.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); - r.h.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | (new ? NLM_F_CREATE|NLM_F_EXCL : 0); + bzero(&r->h, sizeof(r->h)); + bzero(&r->r, sizeof(r->r)); + r->h.nlmsg_type = new ? RTM_NEWROUTE : RTM_DELROUTE; + r->h.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); + r->h.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | (new ? NLM_F_CREATE|NLM_F_EXCL : 0); - r.r.rtm_family = BIRD_AF; - r.r.rtm_dst_len = net->n.pxlen; - r.r.rtm_protocol = RTPROT_BIRD; - r.r.rtm_scope = RT_SCOPE_UNIVERSE; - nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net->n.prefix); + r->r.rtm_family = p->af; + r->r.rtm_dst_len = net_pxlen(net->n.addr); + r->r.rtm_protocol = RTPROT_BIRD; + r->r.rtm_scope = RT_SCOPE_UNIVERSE; + nl_add_attr_ipa(&r->h, rsize, RTA_DST, net_prefix(net->n.addr)); if (krt_table_id(p) < 256) - r.r.rtm_table = krt_table_id(p); + r->r.rtm_table = krt_table_id(p); else - nl_add_attr_u32(&r.h, sizeof(r), RTA_TABLE, krt_table_id(p)); + nl_add_attr_u32(&r->h, rsize, RTA_TABLE, krt_table_id(p)); /* For route delete, we do not specify route attributes */ if (!new) - return nl_exchange(&r.h); + return nl_exchange(&r->h); if (ea = ea_find(eattrs, EA_KRT_METRIC)) - nl_add_attr_u32(&r.h, sizeof(r), RTA_PRIORITY, ea->u.data); + nl_add_attr_u32(&r->h, rsize, RTA_PRIORITY, ea->u.data); if (ea = ea_find(eattrs, EA_KRT_PREFSRC)) - nl_add_attr_ipa(&r.h, sizeof(r), RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data); + nl_add_attr_ipa(&r->h, rsize, RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data); if (ea = ea_find(eattrs, EA_KRT_REALM)) - nl_add_attr_u32(&r.h, sizeof(r), RTA_FLOW, ea->u.data); + nl_add_attr_u32(&r->h, rsize, RTA_FLOW, ea->u.data); u32 metrics[KRT_METRICS_MAX]; @@ -865,7 +978,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new) } if (metrics[0]) - nl_add_metrics(&r.h, sizeof(r), metrics, KRT_METRICS_MAX); + nl_add_metrics(&r->h, rsize, metrics, KRT_METRICS_MAX); /* a->iface != NULL checked in krt_capable() for router and device routes */ @@ -873,32 +986,32 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new) switch (a->dest) { case RTD_ROUTER: - r.r.rtm_type = RTN_UNICAST; - nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index); - nl_add_attr_ipa(&r.h, sizeof(r), RTA_GATEWAY, a->gw); + r->r.rtm_type = RTN_UNICAST; + nl_add_attr_u32(&r->h, rsize, RTA_OIF, a->iface->index); + nl_add_attr_ipa(&r->h, rsize, RTA_GATEWAY, a->gw); break; case RTD_DEVICE: - r.r.rtm_type = RTN_UNICAST; - nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index); + r->r.rtm_type = RTN_UNICAST; + nl_add_attr_u32(&r->h, rsize, RTA_OIF, a->iface->index); break; case RTD_BLACKHOLE: - r.r.rtm_type = RTN_BLACKHOLE; + r->r.rtm_type = RTN_BLACKHOLE; break; case RTD_UNREACHABLE: - r.r.rtm_type = RTN_UNREACHABLE; + r->r.rtm_type = RTN_UNREACHABLE; break; case RTD_PROHIBIT: - r.r.rtm_type = RTN_PROHIBIT; + r->r.rtm_type = RTN_PROHIBIT; break; case RTD_MULTIPATH: - r.r.rtm_type = RTN_UNICAST; - nl_add_multipath(&r.h, sizeof(r), a->nexthops); + r->r.rtm_type = RTN_UNICAST; + nl_add_multipath(&r->h, rsize, a->nexthops); break; default: bug("krt_capable inconsistent with nl_send_route"); } - return nl_exchange(&r.h); + return nl_exchange(&r->h); } void @@ -936,9 +1049,9 @@ nl_parse_route(struct nlmsghdr *h, int scan) struct rtattr *a[BIRD_RTA_MAX]; int new = h->nlmsg_type == RTM_NEWROUTE; - ip_addr dst = IPA_NONE; + net_addr dst; u32 oif = ~0; - u32 table; + u32 table_id; int src; if (!(i = nl_checkin(h, sizeof(*i)))) @@ -946,54 +1059,54 @@ nl_parse_route(struct nlmsghdr *h, int scan) switch (i->rtm_family) { -#ifndef IPV6 - case AF_INET: - if (!nl_parse_attrs(RTM_RTA(i), rtm_attr_want4, a, sizeof(a))) - return; - break; -#else + case AF_INET: + if (!nl_parse_attrs(RTM_RTA(i), rtm_attr_want4, a, sizeof(a))) + return; + + if (a[RTA_DST]) + net_fill_ip4(&dst, rta_get_ip4(a[RTA_DST]), i->rtm_dst_len); + else + net_fill_ip4(&dst, IP4_NONE, 0); + break; + case AF_INET6: if (!nl_parse_attrs(RTM_RTA(i), rtm_attr_want6, a, sizeof(a))) return; - break; -#endif - default: - return; - } + if (a[RTA_DST]) + net_fill_ip6(&dst, rta_get_ip6(a[RTA_DST]), i->rtm_dst_len); + else + net_fill_ip6(&dst, IP6_NONE, 0); + break; - if (a[RTA_DST]) - { - memcpy(&dst, RTA_DATA(a[RTA_DST]), sizeof(dst)); - ipa_ntoh(dst); + default: + return; } if (a[RTA_OIF]) oif = rta_get_u32(a[RTA_OIF]); if (a[RTA_TABLE]) - table = rta_get_u32(a[RTA_TABLE]); + table_id = rta_get_u32(a[RTA_TABLE]); else - table = i->rtm_table; + table_id = i->rtm_table; - p = HASH_FIND(nl_table_map, RTH, table); /* Do we know this table? */ - DBG("KRT: Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, table, i->rtm_protocol, p ? p->p.name : "(none)"); + /* Do we know this table? */ + p = HASH_FIND(nl_table_map, RTH, i->rtm_family, table_id); if (!p) SKIP("unknown table %d\n", table); -#ifdef IPV6 if (a[RTA_IIF]) SKIP("IIF set\n"); -#else + if (i->rtm_tos != 0) /* We don't support TOS */ SKIP("TOS %02x\n", i->rtm_tos); -#endif if (scan && !new) SKIP("RTM_DELROUTE in scan\n"); - int c = ipa_classify_net(dst); + int c = net_classify(&dst); if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK)) SKIP("strange class/scope\n"); @@ -1025,7 +1138,7 @@ nl_parse_route(struct nlmsghdr *h, int scan) src = KRT_SRC_ALIEN; } - net *net = net_get(p->p.table, dst, i->rtm_dst_len); + net *net = net_get(p->p.main_channel->table, &dst); rta ra = { .src= p->p.main_source, @@ -1044,8 +1157,7 @@ nl_parse_route(struct nlmsghdr *h, int scan) ra.nexthops = nl_parse_multipath(p, a[RTA_MULTIPATH]); if (!ra.nexthops) { - log(L_ERR "KRT: Received strange multipath route %I/%d", - net->n.prefix, net->n.pxlen); + log(L_ERR "KRT: Received strange multipath route %N", net->n.addr); return; } @@ -1055,30 +1167,26 @@ nl_parse_route(struct nlmsghdr *h, int scan) ra.iface = if_find_by_index(oif); if (!ra.iface) { - log(L_ERR "KRT: Received route %I/%d with unknown ifindex %u", - net->n.prefix, net->n.pxlen, oif); + log(L_ERR "KRT: Received route %N with unknown ifindex %u", net->n.addr, oif); return; } if (a[RTA_GATEWAY]) { - neighbor *ng; ra.dest = RTD_ROUTER; - memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw)); - ipa_ntoh(ra.gw); + ra.gw = rta_get_ipa(a[RTA_GATEWAY]); -#ifdef IPV6 /* Silently skip strange 6to4 routes */ - if (ipa_in_net(ra.gw, IPA_NONE, 96)) + const net_addr_ip6 sit = NET_ADDR_IP6(IP6_NONE, 96); + if ((i->rtm_family == AF_INET6) && ipa_in_netX(ra.gw, (net_addr *) &sit)) return; -#endif - ng = neigh_find2(&p->p, &ra.gw, ra.iface, - (i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); - if (!ng || (ng->scope == SCOPE_HOST)) + neighbor *nbr; + nbr = neigh_find2(&p->p, &ra.gw, ra.iface, + (i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); + if (!nbr || (nbr->scope == SCOPE_HOST)) { - log(L_ERR "KRT: Received route %I/%d with strange next-hop %I", - net->n.prefix, net->n.pxlen, ra.gw); + log(L_ERR "KRT: Received route %N with strange next-hop %I", net->n.addr, ra.gw); return; } } @@ -1116,9 +1224,7 @@ nl_parse_route(struct nlmsghdr *h, int scan) if (a[RTA_PREFSRC]) { - ip_addr ps; - memcpy(&ps, RTA_DATA(a[RTA_PREFSRC]), sizeof(ps)); - ipa_ntoh(ps); + ip_addr ps = rta_get_ipa(a[RTA_PREFSRC]); ea_list *ea = alloca(sizeof(ea_list) + sizeof(eattr)); ea->next = ra.eattrs; @@ -1154,8 +1260,7 @@ nl_parse_route(struct nlmsghdr *h, int scan) if (nl_parse_metrics(a[RTA_METRICS], metrics, ARRAY_SIZE(metrics)) < 0) { - log(L_ERR "KRT: Received route %I/%d with strange RTA_METRICS attribute", - net->n.prefix, net->n.pxlen); + log(L_ERR "KRT: Received route %N with strange RTA_METRICS attribute", net->n.addr); return; } @@ -1189,7 +1294,14 @@ krt_do_scan(struct krt_proto *p UNUSED) /* CONFIG_ALL_TABLES_AT_ONCE => p is NUL { struct nlmsghdr *h; - nl_request_dump(BIRD_AF, RTM_GETROUTE); + nl_request_dump(AF_INET, RTM_GETROUTE); + while (h = nl_get_scan()) + if (h->nlmsg_type == RTM_NEWROUTE || h->nlmsg_type == RTM_DELROUTE) + nl_parse_route(h, 1); + else + log(L_DEBUG "nl_scan_fire: Unknown packet received (type=%d)", h->nlmsg_type); + + nl_request_dump(AF_INET6, RTM_GETROUTE); while (h = nl_get_scan()) if (h->nlmsg_type == RTM_NEWROUTE || h->nlmsg_type == RTM_DELROUTE) nl_parse_route(h, 1); @@ -1305,11 +1417,10 @@ nl_open_async(void) bzero(&sa, sizeof(sa)); sa.nl_family = AF_NETLINK; -#ifdef IPV6 - sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE; -#else - sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE; -#endif + sa.nl_groups = RTMGRP_LINK | + RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE | + RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE; + if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) { log(L_ERR "Unable to bind asynchronous rtnetlink socket: %m"); @@ -1341,7 +1452,7 @@ krt_sys_io_init(void) int krt_sys_start(struct krt_proto *p) { - struct krt_proto *old = HASH_FIND(nl_table_map, RTH, krt_table_id(p)); + struct krt_proto *old = HASH_FIND(nl_table_map, RTH, p->af, krt_table_id(p)); if (old) { diff --git a/sysdep/linux/sysio.h b/sysdep/linux/sysio.h index 58644417..3c07a3e7 100644 --- a/sysdep/linux/sysio.h +++ b/sysdep/linux/sysio.h @@ -184,7 +184,7 @@ sk_set_md5_auth(sock *s, ip_addr local UNUSED, ip_addr remote, struct iface *ifa struct tcp_md5sig md5; memset(&md5, 0, sizeof(md5)); - sockaddr_fill((sockaddr *) &md5.tcpm_addr, s->af, remote, ifa, 0); + sockaddr_fill((sockaddr *) &md5.tcpm_addr, fam_to_af[s->fam], remote, ifa, 0); if (passwd) { |