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Netlink and BSD: Integrating IPv4 and IPv6

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Squashing and minor changes by Ondrej Santiago Zajicek
This commit is contained in:
Jan Moskyto Matejka 2015-12-07 16:24:18 +01:00 committed by Ondrej Zajicek (work)
parent 04ae8ddaa1
commit 9b136840d9
6 changed files with 287 additions and 108 deletions
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1
lib/Modules
View file

@ -31,3 +31,4 @@ event.h
checksum.c
checksum.h
alloca.h
net.c

60
lib/net.c
View file

@ -8,9 +8,9 @@ const u16 net_addr_length[] = {
[NET_IP6] = sizeof(net_addr_ip6),
[NET_VPN4] = sizeof(net_addr_vpn4),
[NET_VPN6] = sizeof(net_addr_vpn6)
}
};
char *
int
net_format(const net_addr *N, char *buf, int buflen)
{
net_addr_union *n = (void *) N;
@ -27,6 +27,58 @@ net_format(const net_addr *N, char *buf, int buflen)
case NET_VPN6:
return bsnprintf(buf, buflen, "%u:%u %I/%d", (u32) (n->vpn6.rd >> 32), (u32) n->vpn6.rd, n->vpn6.prefix, n->vpn6.pxlen);
}
return 0;
}
ip_addr
net_pxmask(const net_addr *a)
{
switch (a->type)
{
case NET_IP4:
case NET_VPN4:
return ipa_from_ip4(ip4_mkmask(net4_pxlen(a)));
case NET_IP6:
case NET_VPN6:
return ipa_from_ip6(ip6_mkmask(net6_pxlen(a)));
default:
return IPA_NONE;
}
}
static inline int net_validate_ip4(const net_addr_ip4 *n)
{
return (n->pxlen <= IP4_MAX_PREFIX_LENGTH) &&
ip4_zero(ip4_and(n->prefix, ip4_not(ip4_mkmask(n->pxlen))));
}
static inline int net_validate_ip6(const net_addr_ip6 *n)
{
return (n->pxlen <= IP6_MAX_PREFIX_LENGTH) &&
ip6_zero(ip6_and(n->prefix, ip6_not(ip6_mkmask(n->pxlen))));
}
int
net_validate(const net_addr *N)
{
switch (a->type)
{
case NET_IP4:
case NET_VPN4:
return net_validate_ip4((net_addr_ip4 *) N);
case NET_IP6:
case NET_VPN6:
return net_validate_ip6((net_addr_ip6 *) N);
default:
return 0;
}
}
int
@ -42,6 +94,8 @@ net_classify(const net_addr *N)
case NET_IP6:
case NET_VPN6:
return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(n->ip6.prefix);
return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(&n->ip6.prefix);
}
return 0;
}

5
lib/net.h
View file

@ -131,6 +131,8 @@ static inline uint net6_pxlen(const net_addr *a)
static inline uint net_pxlen(const net_addr *a)
{ return a->pxlen; }
ip_addr net_pxmask(const net_addr *a);
static inline int net_equal(const net_addr *a, const net_addr *b)
{ return (a->length == b->length) && !memcmp(a, b, a->length); }
@ -203,8 +205,9 @@ static inline void net_normalize_ip6(net_addr_ip6 *n)
void net_normalize(net_addr *N);
int net_validate(const net_addr *N);
int net_classify(const net_addr *N);
char * net_format(const net_addr *N, char *buf, int buflen);
int net_format(const net_addr *N, char *buf, int buflen);
int ipa_in_netX(const ip_addr A, const net_addr *N);

8
nest/neighbor.c
View file

@ -81,15 +81,15 @@ if_connected(ip_addr *a, struct iface *i, struct ifa **ap)
{
if (ipa_in_netX(*a, &b->prefix))
{
#ifndef IPV6
if ((b->pxlen < (BITS_PER_IP_ADDRESS - 1)) &&
(ipa_equal(*a, b->prefix) || /* Network address */
/* Do not allow IPv4 network and broadcast addresses */
if (ipa_is_ip4(*a) &&
(net_pxlen(&b->prefix) < (BITS_PER_IP_ADDRESS - 1)) &&
(ipa_equal(*a, net_prefix(&b->prefix)) || /* Network address */
ipa_equal(*a, b->brd))) /* Broadcast */
{
*ap = NULL;
return -1;
}
#endif
return b->scope;
}

52
sysdep/bsd/krt-sock.c
View file

@ -207,7 +207,7 @@ krt_send_route(struct krt_proto *p, int cmd, rte *e)
msg.rtm.rtm_addrs = RTA_DST;
msg.rtm.rtm_flags = RTF_UP | RTF_PROTO1;
if (net->n.pxlen == MAX_PREFIX_LENGTH)
if (net_prefix(net->n.addr) == MAX_PREFIX_LENGTH)
msg.rtm.rtm_flags |= RTF_HOST;
else
msg.rtm.rtm_addrs |= RTA_NETMASK;
@ -251,9 +251,24 @@ krt_send_route(struct krt_proto *p, int cmd, rte *e)
_I0(gw) = 0xfe800000 | (i->index & 0x0000ffff);
#endif
sockaddr_fill(&dst, BIRD_AF, net->n.prefix, NULL, 0);
sockaddr_fill(&mask, BIRD_AF, ipa_mkmask(net->n.pxlen), NULL, 0);
sockaddr_fill(&gate, BIRD_AF, gw, NULL, 0);
int af = AF_UNSPEC;
switch (net->n.addr->type) {
case NET_IP4:
af = AF_INET;
break;
case NET_IP6:
af = AF_INET6;
break;
default:
log(L_ERR "KRT: Not sending VPN route %N to kernel", net->n.addr);
return -1;
}
sockaddr_fill(&dst, af, net_prefix(net->n.addr), NULL, 0);
sockaddr_fill(&mask, af, net_pxmask(net->n.addr), NULL, 0);
sockaddr_fill(&gate, af, gw, NULL, 0);
switch (a->dest)
{
@ -299,7 +314,7 @@ krt_send_route(struct krt_proto *p, int cmd, rte *e)
msg.rtm.rtm_msglen = l;
if ((l = write(p->sys.sk->fd, (char *)&msg, l)) < 0) {
log(L_ERR "KRT: Error sending route %I/%d to kernel: %m", net->n.prefix, net->n.pxlen);
log(L_ERR "KRT: Error sending route %N to kernel: %m", net->n.addr);
return -1;
}
@ -335,6 +350,7 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
net *net;
sockaddr dst, gate, mask;
ip_addr idst, igate, imask;
net_addr ndst;
void *body = (char *)msg->buf;
int new = (msg->rtm.rtm_type != RTM_DELETE);
char *errmsg = "KRT: Invalid route received";
@ -386,8 +402,11 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
if (pxlen < 0)
{ log(L_ERR "%s (%I) - netmask %I", errmsg, idst, imask); return; }
/* XXXX */
net_fill_ipa(&ndst, idst, pxlen);
if ((flags & RTF_GATEWAY) && ipa_zero(igate))
{ log(L_ERR "%s (%I/%d) - missing gateway", errmsg, idst, pxlen); return; }
{ log(L_ERR "%s (%N) - missing gateway", errmsg, ndst); return; }
u32 self_mask = RTF_PROTO1;
u32 alien_mask = RTF_STATIC | RTF_PROTO1 | RTF_GATEWAY;
@ -426,7 +445,7 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
else
src = KRT_SRC_KERNEL;
net = net_get(p->p.table, idst, pxlen);
net = net_get(p->p.table, &ndst);
rta a = {
.src = p->p.main_source,
@ -455,8 +474,8 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
a.iface = if_find_by_index(msg->rtm.rtm_index);
if (!a.iface)
{
log(L_ERR "KRT: Received route %I/%d with unknown ifindex %u",
net->n.prefix, net->n.pxlen, msg->rtm.rtm_index);
log(L_ERR "KRT: Received route %N with unknown ifindex %u",
net->n.addr, msg->rtm.rtm_index);
return;
}
@ -480,8 +499,8 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
if (ipa_classify(a.gw) == (IADDR_HOST | SCOPE_HOST))
return;
log(L_ERR "KRT: Received route %I/%d with strange next-hop %I",
net->n.prefix, net->n.pxlen, a.gw);
log(L_ERR "KRT: Received route %N with strange next-hop %I",
net->n.addr, a.gw);
return;
}
}
@ -652,7 +671,7 @@ krt_read_addr(struct ks_msg *msg, int scan)
imask = ipa_from_sa(&mask);
ibrd = ipa_from_sa(&brd);
/* XXXX */
if ((masklen = ipa_masklen(imask)) < 0)
{
log(L_ERR "KIF: Invalid masklen %I for %s", imask, iface->name);
@ -673,7 +692,6 @@ krt_read_addr(struct ks_msg *msg, int scan)
bzero(&ifa, sizeof(ifa));
ifa.iface = iface;
ifa.ip = iaddr;
ifa.pxlen = masklen;
scope = ipa_classify(ifa.ip);
if (scope < 0)
@ -685,7 +703,8 @@ krt_read_addr(struct ks_msg *msg, int scan)
if (masklen < BITS_PER_IP_ADDRESS)
{
ifa.prefix = ipa_and(ifa.ip, ipa_mkmask(masklen));
net_fill_ipa(&ifa.prefix, ifa.ip, masklen);
net_normalize(&ifa.prefix);
if (masklen == (BITS_PER_IP_ADDRESS - 1))
ifa.opposite = ipa_opposite_m1(ifa.ip);
@ -703,12 +722,13 @@ krt_read_addr(struct ks_msg *msg, int scan)
}
else if (!(iface->flags & IF_MULTIACCESS) && ipa_nonzero(ibrd))
{
ifa.prefix = ifa.opposite = ibrd;
net_fill_ipa(&ifa.prefix, ibrd, BITS_PER_IP_ADDRESS);
ifa.opposite = ibrd;
ifa.flags |= IA_PEER;
}
else
{
ifa.prefix = ifa.ip;
net_fill_ipa(&ifa.prefix, ifa.ip, BITS_PER_IP_ADDRESS);
ifa.flags |= IA_HOST;
}

269
sysdep/linux/netlink.c
View file

@ -241,7 +241,6 @@ static struct nl_want_attrs ifla_attr_want[BIRD_IFLA_MAX] = {
[IFLA_WIRELESS] = { 1, 0, 0 },
};
#define BIRD_IFA_MAX (IFA_ANYCAST+1)
#ifndef IPV6
@ -257,7 +256,6 @@ static struct nl_want_attrs ifa_attr_want6[BIRD_IFA_MAX] = {
};
#endif
#define BIRD_RTA_MAX (RTA_TABLE+1)
static struct nl_want_attrs mpnh_attr_want4[BIRD_RTA_MAX] = {
@ -304,7 +302,7 @@ 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;
}
@ -329,6 +327,13 @@ 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)
@ -357,10 +362,18 @@ nl_add_attr_u32(struct nlmsghdr *h, unsigned bufsize, int code, u32 data)
}
static inline void
nl_add_attr_ipa(struct nlmsghdr *h, unsigned bufsize, int code, ip_addr ipa)
nl_add_attr_ipa(struct nlmsghdr *h, unsigned bufsize, int code, ip_addr ipa, int af)
{
ipa_hton(ipa);
nl_add_attr(h, bufsize, code, &ipa, sizeof(ipa));
if (af == AF_INET)
{
ip4_addr ip4 = ip4_hton(ipa_to_ip4(ipa));
nl_add_attr(h, bufsize, code, &ip4, sizeof(ip4));
}
else
{
ip6_addr ip6 = ip6_hton(ipa_to_ip6(ipa));
nl_add_attr(h, bufsize, code, &ip6, sizeof(ip6));
}
}
static inline struct rtattr *
@ -408,7 +421,7 @@ nl_add_multipath(struct nlmsghdr *h, unsigned bufsize, struct mpnh *nh)
rtnh->rtnh_hops = nh->weight;
rtnh->rtnh_ifindex = nh->iface->index;
nl_add_attr_ipa(h, bufsize, RTA_GATEWAY, nh->gw);
nl_add_attr_ipa(h, bufsize, RTA_GATEWAY, nh->gw, AF_INET);
nl_close_nexthop(h, rtnh);
}
@ -598,39 +611,117 @@ 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)");
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.ip = rta_get_ipa(a[IFA_LOCAL]);
if (i->ifa_prefixlen > BITS_PER_IP_ADDRESS)
{
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)
{
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, ifa.brd))
ifa.flags |= IA_HOST;
else
{
ifa.flags |= IA_PEER;
ifa.opposite = ifa.brd;
}
}
else
{
net_fill_ip4(&ifa.prefix, ipa_to_ip4(ifa.ip), i->ifa_prefixlen);
net_normalize(&ifa.prefix);
if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 1)
ifa.opposite = ipa_opposite_m1(ifa.ip);
if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 2)
ifa.opposite = ipa_opposite_m2(ifa.ip);
if ((ifi->flags & IF_BROADCAST) && a[IFA_BROADCAST])
{
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);
ifa.brd = ipa_from_ip4(ybrd);
}
}
}
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.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])
{
@ -645,15 +736,16 @@ 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;
ifa.ip = rta_get_ipa(a[IFA_LOCAL] ? : a[IFA_ADDRESS]);
if (i->ifa_prefixlen > BITS_PER_IP_ADDRESS)
{
log(L_ERR "KIF: Invalid prefix length for interface %s: %d", ifi->name, i->ifa_prefixlen);
@ -661,43 +753,25 @@ nl_parse_addr(struct nlmsghdr *h, int scan)
}
if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS)
{
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_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, 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));
net_fill_ip6(&ifa.prefix, ipa_to_ip6(ifa.ip), i->ifa_prefixlen);
net_normalize(&ifa.prefix);
if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 1)
ifa.opposite = ipa_opposite_m1(ifa.ip);
#ifndef IPV6
if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 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;
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);
}
#endif
}
scope = ipa_classify(ifa.ip);
@ -708,10 +782,10 @@ 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.pxlen, ifa.brd, ifa.opposite);
ifa.ip, ifa.flags, ifa.prefix, ifa.brd, ifa.opposite);
if (new)
ifa_update(&ifa);
@ -722,6 +796,28 @@ 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)
{
#ifndef IPV6
case AF_INET:
return nl_parse_addr4(i, scan, new);
#else
case AF_INET6:
return nl_parse_addr6(i, scan, new);
#endif
}
}
void
kif_do_scan(struct kif_proto *p UNUSED)
{
@ -814,7 +910,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
char buf[128 + KRT_METRICS_MAX*8 + nh_bufsize(a->nexthops)];
} r;
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));
@ -822,11 +918,24 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
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;
int af = AF_UNSPEC;
switch(net->n.addr->type) {
case NET_IP4:
af = AF_INET;
break;
case NET_IP6:
af = AF_INET6;
break;
default:
bug("should not send vpn route to kernel");
}
r.r.rtm_family = 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, sizeof(r), RTA_DST, net->n.prefix);
nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net_prefix(net->n.addr), af);
if (krt_table_id(p) < 256)
r.r.rtm_table = krt_table_id(p);
@ -842,7 +951,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
nl_add_attr_u32(&r.h, sizeof(r), 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, sizeof(r), RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data, af);
if (ea = ea_find(eattrs, EA_KRT_REALM))
nl_add_attr_u32(&r.h, sizeof(r), RTA_FLOW, ea->u.data);
@ -870,7 +979,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
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);
nl_add_attr_ipa(&r.h, sizeof(r), RTA_GATEWAY, a->gw, af);
break;
case RTD_DEVICE:
r.r.rtm_type = RTN_UNICAST;
@ -931,11 +1040,13 @@ 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 = { 0 };
u32 oif = ~0;
u32 table;
int src;
int ipv6 = 0;
if (!(i = nl_checkin(h, sizeof(*i))))
return;
@ -950,18 +1061,15 @@ nl_parse_route(struct nlmsghdr *h, int scan)
case AF_INET6:
if (!nl_parse_attrs(RTM_RTA(i), rtm_attr_want6, a, sizeof(a)))
return;
ipv6 = 1;
break;
#endif
default:
return;
}
if (a[RTA_DST])
{
memcpy(&dst, RTA_DATA(a[RTA_DST]), sizeof(dst));
ipa_ntoh(dst);
}
net_fill_ipa(&dst, rta_get_ipa(a[RTA_DST]), i->rtm_dst_len);
if (a[RTA_OIF])
oif = rta_get_u32(a[RTA_OIF]);
@ -977,18 +1085,15 @@ nl_parse_route(struct nlmsghdr *h, int scan)
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");
@ -1020,7 +1125,7 @@ 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.table, &dst);
rta ra = {
.src= p->p.main_source,
@ -1060,11 +1165,9 @@ nl_parse_route(struct nlmsghdr *h, int scan)
memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw));
ipa_ntoh(ra.gw);
#ifdef IPV6
/* Silently skip strange 6to4 routes */
if (ipa_in_net(ra.gw, IPA_NONE, 96))
if (ipv6 && ipa_in_net(ra.gw, IPA_NONE, 96))
return;
#endif
ng = neigh_find2(&p->p, &ra.gw, ra.iface,
(i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0);
@ -1107,9 +1210,7 @@ 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;