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-rw-r--r--sysdep/linux/netlink.c147
1 files changed, 71 insertions, 76 deletions
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index d5c8a2ab..5015eba3 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -241,20 +241,20 @@ 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
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)
@@ -262,7 +262,6 @@ 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) },
@@ -274,7 +273,7 @@ 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) },
@@ -286,7 +285,6 @@ 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
@@ -356,24 +354,32 @@ 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, int af)
+nl_add_attr_ip4(struct nlmsghdr *h, uint bufsize, int code, ip4_addr ip4)
{
- if (af == AF_INET)
- {
- ip4_addr ip4 = ip4_hton(ipa_to_ip4(ipa));
- nl_add_attr(h, bufsize, code, &ip4, sizeof(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)
+{
+ 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
- {
- ip6_addr ip6 = ip6_hton(ipa_to_ip6(ipa));
- nl_add_attr(h, bufsize, code, &ip6, sizeof(ip6));
- }
+ nl_add_attr_ip6(h, bufsize, code, ipa_to_ip6(ipa));
}
static inline struct rtattr *
@@ -409,7 +415,7 @@ 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);
@@ -421,7 +427,7 @@ 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, AF_INET);
+ nl_add_attr_ipa(h, bufsize, RTA_GATEWAY, nh->gw);
nl_close_nexthop(h, rtnh);
}
@@ -808,13 +814,11 @@ nl_parse_addr(struct nlmsghdr *h, int scan)
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
}
}
@@ -831,21 +835,21 @@ kif_do_scan(struct kif_proto *p UNUSED)
nl_parse_link(h, 1);
else
log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type);
-#ifndef IPV6
+
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);
-#else
+
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);
else
log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type);
-#endif
+
if_end_update();
}
@@ -861,10 +865,10 @@ 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
@@ -925,24 +929,11 @@ 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);
- 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_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, sizeof(r), RTA_DST, net_prefix(net->n.addr), af);
+ nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net_prefix(net->n.addr));
if (krt_table_id(p) < 256)
r.r.rtm_table = krt_table_id(p);
@@ -958,7 +949,7 @@ 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, af);
+ nl_add_attr_ipa(&r.h, sizeof(r), 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);
@@ -986,7 +977,7 @@ 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, af);
+ nl_add_attr_ipa(&r.h, sizeof(r), RTA_GATEWAY, a->gw);
break;
case RTD_DEVICE:
r.r.rtm_type = RTN_UNICAST;
@@ -1047,53 +1038,60 @@ nl_parse_route(struct nlmsghdr *h, int scan)
struct rtattr *a[BIRD_RTA_MAX];
int new = h->nlmsg_type == RTM_NEWROUTE;
- net_addr dst = { 0 };
+ net_addr dst;
u32 oif = ~0;
- u32 table;
+ u32 table_id;
int src;
- int ipv6 = 0;
-
if (!(i = nl_checkin(h, sizeof(*i))))
return;
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;
- ipv6 = 1;
- 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;
+
+ default:
+ return;
}
if (a[RTA_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]);
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);
if (a[RTA_IIF])
SKIP("IIF set\n");
+
if (i->rtm_tos != 0) /* We don't support TOS */
SKIP("TOS %02x\n", i->rtm_tos);
@@ -1173,7 +1171,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
ipa_ntoh(ra.gw);
/* Silently skip strange 6to4 routes */
- if (ipv6 && ipa_in_net(ra.gw, IPA_NONE, 96))
+ if ((i->rtm_family == AF_INET6) && ipa_in_net(ra.gw, IPA_NONE, 96))
return;
ng = neigh_find2(&p->p, &ra.gw, ra.iface,
@@ -1287,21 +1285,19 @@ krt_do_scan(struct krt_proto *p UNUSED) /* CONFIG_ALL_TABLES_AT_ONCE => p is NUL
{
struct nlmsghdr *h;
-#ifndef IPV6
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);
-#else
+
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);
else
log(L_DEBUG "nl_scan_fire: Unknown packet received (type=%d)", h->nlmsg_type);
-#endif
}
/*
@@ -1407,11 +1403,10 @@ 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");
@@ -1443,7 +1438,7 @@ 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)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 16:32:58 +0000