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Merge commit '950775f6fa3d569a9d7cd05e33538d35e895d688' into haugesund

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There were quite a lot of conflicts in flowspec validation code which
ultimately led to some code being a bit rewritten, not only adapted from
this or that branch, yet it is still in a limit of a merge.
This commit is contained in:
Maria Matejka
2022-06-08 11:47:49 +02:00
parent 8fd3811d9d 950775f6fa
commit cae5979871
21 changed files with 303 additions and 241 deletions
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78
sysdep/linux/netlink.c
View File

@@ -1407,11 +1407,16 @@ HASH_DEFINE_REHASH_FN(RTH, struct krt_proto)
int
krt_capable(rte *e)
{
rta *a = e->attrs;
eattr *ea = ea_find(e->attrs->eattrs, &ea_gen_nexthop);
if (!ea)
return 0;
switch (a->dest)
struct nexthop_adata *nhad = (void *) ea->u.ptr;
if (NEXTHOP_IS_REACHABLE(nhad))
return 1;
switch (nhad->dest)
{
case RTD_UNICAST:
case RTD_BLACKHOLE:
case RTD_UNREACHABLE:
case RTD_PROHIBIT:
@@ -1590,7 +1595,7 @@ nl_add_rte(struct krt_proto *p, rte *e)
eattr *nhea = ea_find(a->eattrs, &ea_gen_nexthop);
struct nexthop_adata *nhad = nhea ? (struct nexthop_adata *) nhea->u.ptr : NULL;
if (krt_ecmp6(p) && nhad && !NEXTHOP_ONE(nhad))
if (krt_ecmp6(p) && nhad && NEXTHOP_IS_REACHABLE(nhad) && !NEXTHOP_ONE(nhad))
{
uint cnt = 0;
NEXTHOP_WALK(nh, nhad)
@@ -1615,7 +1620,8 @@ nl_add_rte(struct krt_proto *p, rte *e)
return err;
}
return nl_send_route(p, e, NL_OP_ADD, a->dest, nhad);
return nl_send_route(p, e, NL_OP_ADD,
NEXTHOP_IS_REACHABLE(nhad) ? RTD_UNICAST : nhad->dest, nhad);
}
static inline int
@@ -1637,7 +1643,8 @@ nl_replace_rte(struct krt_proto *p, rte *e)
rta *a = e->attrs;
eattr *nhea = ea_find(a->eattrs, &ea_gen_nexthop);
struct nexthop_adata *nhad = nhea ? (struct nexthop_adata *) nhea->u.ptr : NULL;
return nl_send_route(p, e, NL_OP_REPLACE, a->dest, nhad);
return nl_send_route(p, e, NL_OP_REPLACE,
NEXTHOP_IS_REACHABLE(nhad) ? RTD_UNICAST : nhad->dest, nhad);
}
@@ -1900,8 +1907,6 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
switch (i->rtm_type)
{
case RTN_UNICAST:
ra->dest = RTD_UNICAST;
if (a[RTA_MULTIPATH])
{
struct nexthop_adata *nh = nl_parse_multipath(s, p, net, a[RTA_MULTIPATH], i->rtm_family, krt_src);
@@ -1952,15 +1957,40 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
}
}
#ifdef HAVE_MPLS_KERNEL
if ((i->rtm_family == AF_MPLS) && a[RTA_NEWDST] && !a[RTA_MULTIPATH])
nhad.nh.labels = rta_get_mpls(a[RTA_NEWDST], nhad.nh.label);
if (a[RTA_ENCAP] && a[RTA_ENCAP_TYPE] && !a[RTA_MULTIPATH])
{
switch (rta_get_u16(a[RTA_ENCAP_TYPE]))
{
case LWTUNNEL_ENCAP_MPLS:
{
struct rtattr *enca[BIRD_RTA_MAX];
nl_attr_len = RTA_PAYLOAD(a[RTA_ENCAP]);
nl_parse_attrs(RTA_DATA(a[RTA_ENCAP]), encap_mpls_want, enca, sizeof(enca));
nhad.nh.labels = rta_get_mpls(enca[RTA_DST], nhad.nh.label);
break;
}
default:
SKIP("unknown encapsulation method %d\n", rta_get_u16(a[RTA_ENCAP_TYPE]));
break;
}
}
#endif
/* Finalize the nexthop */
nhad.ad.length = (void *) NEXTHOP_NEXT(&nhad.nh) - (void *) nhad.ad.data;
break;
case RTN_BLACKHOLE:
ra->dest = RTD_BLACKHOLE;
nhad.nhad = NEXTHOP_DEST_LITERAL(RTD_BLACKHOLE);
break;
case RTN_UNREACHABLE:
ra->dest = RTD_UNREACHABLE;
nhad.nhad = NEXTHOP_DEST_LITERAL(RTD_UNREACHABLE);
break;
case RTN_PROHIBIT:
ra->dest = RTD_PROHIBIT;
nhad.nhad = NEXTHOP_DEST_LITERAL(RTD_PROHIBIT);
break;
/* FIXME: What about RTN_THROW? */
default:
@@ -1968,32 +1998,6 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
return;
}
#ifdef HAVE_MPLS_KERNEL
if ((i->rtm_family == AF_MPLS) && a[RTA_NEWDST] && !a[RTA_MULTIPATH])
nhad.nh.labels = rta_get_mpls(a[RTA_NEWDST], nhad.nh.label);
if (a[RTA_ENCAP] && a[RTA_ENCAP_TYPE] && !a[RTA_MULTIPATH])
{
switch (rta_get_u16(a[RTA_ENCAP_TYPE]))
{
case LWTUNNEL_ENCAP_MPLS:
{
struct rtattr *enca[BIRD_RTA_MAX];
nl_attr_len = RTA_PAYLOAD(a[RTA_ENCAP]);
nl_parse_attrs(RTA_DATA(a[RTA_ENCAP]), encap_mpls_want, enca, sizeof(enca));
nhad.nh.labels = rta_get_mpls(enca[RTA_DST], nhad.nh.label);
break;
}
default:
SKIP("unknown encapsulation method %d\n", rta_get_u16(a[RTA_ENCAP_TYPE]));
break;
}
}
#endif
/* Finalize the nexthop */
nhad.ad.length = (void *) NEXTHOP_NEXT(&nhad.nh) - (void *) nhad.ad.data;
if (i->rtm_scope != def_scope)
ea_set_attr(&ra->eattrs,
EA_LITERAL_EMBEDDED(&ea_krt_scope, 0, i->rtm_scope));