Jerry/bird
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
bird/filter/f-inst.c
Maria Matejka 4c553c5a5b Filter refactoring: dropped the recursion from the interpreter 
This is a major change of how the filters are interpreted. If everything
works how it should, it should not affect you unless you are hacking the
filters themselves.

Anyway, this change should make a huge improvement in the filter performance
as previous benchmarks showed that our major problem lies in the
recursion itself.

There are also some changes in nest and protocols, related mostly to
spreading const declarations throughout the whole BIRD and also to
refactored dynamic attribute definitions. The need of these came up
during the whole work and it is too difficult to split out these
not-so-related changes.
2019-02-20 22:30:54 +01:00

948 lines
24 KiB
C
Raw Blame History

/*
* Filters: Instructions themselves
*
* Copyright 1998 Pavel Machek <pavel@ucw.cz>
* Copyright 2018 Maria Matejka <mq@jmq.cz>
* Copyright 2018 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*
*/
/* Binary operators */
INST(FI_ADD, 2, 1) {
ARG(1,T_INT);
ARG(2,T_INT);
res.val.i += v2.val.i;
RESULT_OK;
}
INST(FI_SUBTRACT, 2, 1) {
ARG(1,T_INT);
ARG(2,T_INT);
res.val.i -= v2.val.i;
RESULT_OK;
}
INST(FI_MULTIPLY, 2, 1) {
ARG(1,T_INT);
ARG(2,T_INT);
res.val.i *= v2.val.i;
RESULT_OK;
}
INST(FI_DIVIDE, 2, 1) {
ARG(1,T_INT);
ARG(2,T_INT);
if (v2.val.i == 0) runtime( "Mother told me not to divide by 0" );
res.val.i /= v2.val.i;
RESULT_OK;
}
INST(FI_AND, 1, 1) {
ARG(1,T_BOOL);
if (res.val.i)
LINE(2,0);
else
RESULT_OK;
}
INST(FI_OR, 1, 1) {
ARG(1,T_BOOL);
if (!res.val.i)
LINE(2,0);
else
RESULT_OK;
}
INST(FI_PAIR_CONSTRUCT, 2, 1) {
ARG(1,T_INT);
ARG(2,T_INT);
uint u1 = v1.val.i;
uint u2 = v2.val.i;
if ((u1 > 0xFFFF) || (u2 > 0xFFFF))
runtime( "Can't operate with value out of bounds in pair constructor" );
RESULT(T_PAIR, i, (u1 << 16) | u2);
}
INST(FI_EC_CONSTRUCT, 2, 1) {
ARG_ANY(1);
ARG(2, T_INT);
ECS;
int check, ipv4_used;
u32 key, val;
if (v1.type == T_INT) {
ipv4_used = 0; key = v1.val.i;
}
else if (v1.type == T_QUAD) {
ipv4_used = 1; key = v1.val.i;
}
/* IP->Quad implicit conversion */
else if (val_is_ip4(&v1)) {
ipv4_used = 1; key = ipa_to_u32(v1.val.ip);
}
else
runtime("Argument 1 of instruction FI_EC_CONSTRUCT must be integer or IPv4 address, got 0x%02x");
val = v2.val.i;
if (ecs == EC_GENERIC) {
check = 0; RESULT(T_EC, ec, ec_generic(key, val));
}
else if (ipv4_used) {
check = 1; RESULT(T_EC, ec, ec_ip4(ecs, key, val));
}
else if (key < 0x10000) {
check = 0; RESULT(T_EC, ec, ec_as2(ecs, key, val));
}
else {
check = 1; RESULT(T_EC, ec, ec_as4(ecs, key, val));
}
if (check && (val > 0xFFFF))
runtime("Value %u > %u out of bounds in EC constructor", val, 0xFFFF);
}
INST(FI_LC_CONSTRUCT, 3, 1) {
ARG(1, T_INT);
ARG(2, T_INT);
ARG(3, T_INT);
RESULT(T_LC, lc, [[(lcomm) { v1.val.i, v2.val.i, v3.val.i }]]);
}
INST(FI_PATHMASK_CONSTRUCT, 0, 1) {
ARG_ANY(1);
COUNT(2);
if (vstk.cnt < what->count) /* TODO: make this check systematic */
runtime("Construction of BGP path mask from %u elements must have at least that number of elements", what->count);
struct f_path_mask *pm = lp_alloc(fs->pool, sizeof(struct f_path_mask) + what->count * sizeof(struct f_path_mask_item));
for (uint i=0; i<what->count; i++) {
//#define pv vstk.val[vstk.cnt-i-1]
#define pv vstk.val[vstk.cnt - what->count + i]
switch (pv.type) {
case T_PATH_MASK_ITEM:
pm->item[i] = pv.val.pmi;
break;
case T_INT:
pm->item[i] = (struct f_path_mask_item) {
.asn = pv.val.i,
.kind = PM_ASN,
};
break;
default:
runtime( "Error resolving path mask template: value not an integer" );
}
}
vstk.cnt -= what->count;
pm->len = what->count;
RESULT(T_PATH_MASK, path_mask, pm);
}
/* Relational operators */
INST(FI_NEQ, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
RESULT(T_BOOL, i, !val_same(&v1, &v2));
}
INST(FI_EQ, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
RESULT(T_BOOL, i, val_same(&v1, &v2));
}
INST(FI_LT, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
int i = val_compare(&v1, &v2);
if (i == CMP_ERROR)
runtime( "Can't compare values of incompatible types" );
RESULT(T_BOOL, i, (i == -1));
}
INST(FI_LTE, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
int i = val_compare(&v1, &v2);
if (i == CMP_ERROR)
runtime( "Can't compare values of incompatible types" );
RESULT(T_BOOL, i, (i != 1));
}
INST(FI_NOT, 1, 1) {
ARG(1,T_BOOL);
RESULT(T_BOOL, i, !v1.val.i);
}
INST(FI_MATCH, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
int i = val_in_range(&v1, &v2);
if (i == CMP_ERROR)
runtime( "~ applied on unknown type pair" );
RESULT(T_BOOL, i, !!i);
}
INST(FI_NOT_MATCH, 2, 1) {
ARG_ANY(1);
ARG_ANY(2);
int i = val_in_range(&v1, &v2);
if (res.val.i == CMP_ERROR)
runtime( "!~ applied on unknown type pair" );
RESULT(T_BOOL, i, !i);
}
INST(FI_DEFINED, 1, 1) {
ARG_ANY(1);
RESULT(T_BOOL, i, (v1.type != T_VOID) && !undef_value(v1));
}
INST(FI_TYPE, 1, 1) {
ARG_ANY(1); /* There may be more types supporting this operation */
switch (v1.type)
{
case T_NET:
RESULT(T_ENUM_NETTYPE, i, v1.val.net->type);
break;
default:
runtime( "Can't determine type of this item" );
}
}
INST(FI_IS_V4, 1, 1) {
ARG(1, T_IP);
RESULT(T_BOOL, i, ipa_is_ip4(v1.val.ip));
}
/* Set to indirect value prepared in v1 */
INST(FI_SET, 1, 0) {
ARG_ANY(2);
SYMBOL(1);
if ((sym->class != (SYM_VARIABLE | v1.type)) && (v1.type != T_VOID))
{
/* IP->Quad implicit conversion */
if ((sym->class == (SYM_VARIABLE | T_QUAD)) && val_is_ip4(&v1))
{
*((struct f_val *) sym->def) = (struct f_val) {
.type = T_QUAD,
.val.i = ipa_to_u32(v1.val.ip),
};
break;
}
runtime( "Assigning to variable of incompatible type" );
}
*((struct f_val *) sym->def) = v1;
}
/* some constants have value in a[1], some in *a[0].p, strange. */
INST(FI_CONSTANT, 0, 1) { /* integer (or simple type) constant, string, set, or prefix_set */
VALI; // res = what->val;
RESULT_OK;
}
INST(FI_VARIABLE, 0, 1) {
VALP(1); // res = * ((struct f_val *) what->a[0].p);
SAME([[if (strcmp(f1->sym->name, f2->sym->name)) return 0; ]]);
RESULT_OK;
}
INST(FI_CONSTANT_INDIRECT, 0, 1) {
VALP(1);
SAME([[if (!val_same(f1->vp, f2->vp)) return 0; ]]);
RESULT_OK;
}
INST(FI_PRINT, 1, 0) {
ARG_ANY(1);
val_format(&(v1), &fs->buf);
}
INST(FI_CONDITION, 1, 0) {
ARG(1, T_BOOL);
if (res.val.i)
LINE(2,0);
else
LINE(3,1);
}
INST(FI_PRINT_AND_DIE, 0, 0) {
POSTFIXIFY([[
if (what->a[0].p) {
pos = postfixify(dest, what->a[0].p, pos);
dest->items[pos].flags |= FIF_PRINTED;
}
]]);
LINE_SIZE([[
if (what->a[0].p) {
cnt += inst_line_size(what->a[0].p);
}
]]);
FRET(2);
if ((fret == F_NOP || (fret != F_NONL && (what->flags & FIF_PRINTED))) &&
!(fs->flags & FF_SILENT))
log_commit(*L_INFO, &fs->buf);
switch (fret) {
case F_QUITBIRD:
die( "Filter asked me to die" );
case F_ACCEPT:
/* Should take care about turning ACCEPT into MODIFY */
case F_ERROR:
case F_REJECT: /* FIXME (noncritical) Should print complete route along with reason to reject route */
return fret; /* We have to return now, no more processing. */
case F_NONL:
case F_NOP:
break;
default:
bug( "unknown return type: Can't happen");
}
}
INST(FI_RTA_GET, 0, 1) { /* rta access */
{
STATIC_ATTR;
ACCESS_RTE;
struct rta *rta = (*fs->rte)->attrs;
switch (sa.sa_code)
{
case SA_FROM: RESULT(sa.f_type, ip, rta->from); break;
case SA_GW: RESULT(sa.f_type, ip, rta->nh.gw); break;
case SA_NET: RESULT(sa.f_type, net, (*fs->rte)->net->n.addr); break;
case SA_PROTO: RESULT(sa.f_type, s, rta->src->proto->name); break;
case SA_SOURCE: RESULT(sa.f_type, i, rta->source); break;
case SA_SCOPE: RESULT(sa.f_type, i, rta->scope); break;
case SA_DEST: RESULT(sa.f_type, i, rta->dest); break;
case SA_IFNAME: RESULT(sa.f_type, s, rta->nh.iface ? rta->nh.iface->name : ""); break;
case SA_IFINDEX: RESULT(sa.f_type, i, rta->nh.iface ? rta->nh.iface->index : 0); break;
default:
bug("Invalid static attribute access (%u/%u)", sa.f_type, sa.sa_code);
}
}
}
INST(FI_RTA_SET, 1, 0) {
STATIC_ATTR;
ACCESS_RTE;
ARG_ANY(1);
if (sa.f_type != v1.type)
runtime( "Attempt to set static attribute to incompatible type" );
f_rta_cow(fs);
{
struct rta *rta = (*fs->rte)->attrs;
switch (sa.sa_code)
{
case SA_FROM:
rta->from = v1.val.ip;
break;
case SA_GW:
{
ip_addr ip = v1.val.ip;
neighbor *n = neigh_find(rta->src->proto, ip, NULL, 0);
if (!n || (n->scope == SCOPE_HOST))
runtime( "Invalid gw address" );
rta->dest = RTD_UNICAST;
rta->nh.gw = ip;
rta->nh.iface = n->iface;
rta->nh.next = NULL;
rta->hostentry = NULL;
}
break;
case SA_SCOPE:
rta->scope = v1.val.i;
break;
case SA_DEST:
{
int i = v1.val.i;
if ((i != RTD_BLACKHOLE) && (i != RTD_UNREACHABLE) && (i != RTD_PROHIBIT))
runtime( "Destination can be changed only to blackhole, unreachable or prohibit" );
rta->dest = i;
rta->nh.gw = IPA_NONE;
rta->nh.iface = NULL;
rta->nh.next = NULL;
rta->hostentry = NULL;
}
break;
case SA_IFNAME:
{
struct iface *ifa = if_find_by_name(v1.val.s);
if (!ifa)
runtime( "Invalid iface name" );
rta->dest = RTD_UNICAST;
rta->nh.gw = IPA_NONE;
rta->nh.iface = ifa;
rta->nh.next = NULL;
rta->hostentry = NULL;
}
break;
default:
bug("Invalid static attribute access (%u/%u)", sa.f_type, sa.sa_code);
}
}
}
INST(FI_EA_GET, 0, 1) { /* Access to extended attributes */
DYNAMIC_ATTR;
ACCESS_RTE;
ACCESS_EATTRS;
{
eattr *e = ea_find(*fs->eattrs, da.ea_code);
if (!e) {
/* A special case: undefined as_path looks like empty as_path */
if (da.type == EAF_TYPE_AS_PATH) {
RESULT(T_PATH, ad, &null_adata);
break;
}
/* The same special case for int_set */
if (da.type == EAF_TYPE_INT_SET) {
RESULT(T_CLIST, ad, &null_adata);
break;
}
/* The same special case for ec_set */
if (da.type == EAF_TYPE_EC_SET) {
RESULT(T_ECLIST, ad, &null_adata);
break;
}
/* The same special case for lc_set */
if (da.type == EAF_TYPE_LC_SET) {
RESULT(T_LCLIST, ad, &null_adata);
break;
}
/* Undefined value */
res.type = T_VOID;
RESULT_OK;
break;
}
switch (e->type & EAF_TYPE_MASK) {
case EAF_TYPE_INT:
RESULT(da.f_type, i, e->u.data);
break;
case EAF_TYPE_ROUTER_ID:
RESULT(T_QUAD, i, e->u.data);
break;
case EAF_TYPE_OPAQUE:
RESULT(T_ENUM_EMPTY, i, 0);
break;
case EAF_TYPE_IP_ADDRESS:
RESULT(T_IP, ip, *((ip_addr *) e->u.ptr->data));
break;
case EAF_TYPE_AS_PATH:
RESULT(T_PATH, ad, e->u.ptr);
break;
case EAF_TYPE_BITFIELD:
RESULT(T_BOOL, i, !!(e->u.data & (1u << da.bit)));
break;
case EAF_TYPE_INT_SET:
RESULT(T_CLIST, ad, e->u.ptr);
break;
case EAF_TYPE_EC_SET:
RESULT(T_ECLIST, ad, e->u.ptr);
break;
case EAF_TYPE_LC_SET:
RESULT(T_LCLIST, ad, e->u.ptr);
break;
case EAF_TYPE_UNDEF:
res.type = T_VOID;
RESULT_OK;
break;
default:
bug("Unknown dynamic attribute type");
}
}
}
INST(FI_EA_SET, 1, 0) {
DYNAMIC_ATTR;
ACCESS_RTE;
ACCESS_EATTRS;
ARG_ANY(1);
{
struct ea_list *l = lp_alloc(fs->pool, sizeof(struct ea_list) + sizeof(eattr));
l->next = NULL;
l->flags = EALF_SORTED;
l->count = 1;
l->attrs[0].id = da.ea_code;
l->attrs[0].flags = 0;
l->attrs[0].type = da.type | EAF_ORIGINATED | EAF_FRESH;
switch (da.type) {
case EAF_TYPE_INT:
if (v1.type != da.f_type)
runtime( "Setting int attribute to non-int value" );
l->attrs[0].u.data = v1.val.i;
break;
case EAF_TYPE_ROUTER_ID:
/* IP->Quad implicit conversion */
if (val_is_ip4(&v1)) {
l->attrs[0].u.data = ipa_to_u32(v1.val.ip);
break;
}
/* T_INT for backward compatibility */
if ((v1.type != T_QUAD) && (v1.type != T_INT))
runtime( "Setting quad attribute to non-quad value" );
l->attrs[0].u.data = v1.val.i;
break;
case EAF_TYPE_OPAQUE:
runtime( "Setting opaque attribute is not allowed" );
break;
case EAF_TYPE_IP_ADDRESS:
if (v1.type != T_IP)
runtime( "Setting ip attribute to non-ip value" );
int len = sizeof(ip_addr);
struct adata *ad = lp_alloc(fs->pool, sizeof(struct adata) + len);
ad->length = len;
(* (ip_addr *) ad->data) = v1.val.ip;
l->attrs[0].u.ptr = ad;
break;
case EAF_TYPE_AS_PATH:
if (v1.type != T_PATH)
runtime( "Setting path attribute to non-path value" );
l->attrs[0].u.ptr = v1.val.ad;
break;
case EAF_TYPE_BITFIELD:
if (v1.type != T_BOOL)
runtime( "Setting bit in bitfield attribute to non-bool value" );
{
/* First, we have to find the old value */
eattr *e = ea_find(*fs->eattrs, da.ea_code);
u32 data = e ? e->u.data : 0;
if (v1.val.i)
l->attrs[0].u.data = data | (1u << da.bit);
else
l->attrs[0].u.data = data & ~(1u << da.bit);
}
break;
case EAF_TYPE_INT_SET:
if (v1.type != T_CLIST)
runtime( "Setting clist attribute to non-clist value" );
l->attrs[0].u.ptr = v1.val.ad;
break;
case EAF_TYPE_EC_SET:
if (v1.type != T_ECLIST)
runtime( "Setting eclist attribute to non-eclist value" );
l->attrs[0].u.ptr = v1.val.ad;
break;
case EAF_TYPE_LC_SET:
if (v1.type != T_LCLIST)
runtime( "Setting lclist attribute to non-lclist value" );
l->attrs[0].u.ptr = v1.val.ad;
break;
case EAF_TYPE_UNDEF:
if (v1.type != T_VOID)
runtime( "Setting void attribute to non-void value" );
l->attrs[0].u.data = 0;
break;
default: bug("Unknown type in e,S");
}
f_rta_cow(fs);
l->next = *fs->eattrs;
*fs->eattrs = l;
}
}
INST(FI_PREF_GET, 0, 1) {
ACCESS_RTE;
RESULT(T_INT, i, (*fs->rte)->pref);
}
INST(FI_PREF_SET, 1, 0) {
ACCESS_RTE;
ARG(1,T_INT);
if (v1.val.i > 0xFFFF)
runtime( "Setting preference value out of bounds" );
f_rte_cow(fs);
(*fs->rte)->pref = v1.val.i;
}
INST(FI_LENGTH, 1, 1) { /* Get length of */
ARG_ANY(1);
switch(v1.type) {
case T_NET: RESULT(T_INT, i, net_pxlen(v1.val.net)); break;
case T_PATH: RESULT(T_INT, i, as_path_getlen(v1.val.ad)); break;
case T_CLIST: RESULT(T_INT, i, int_set_get_size(v1.val.ad)); break;
case T_ECLIST: RESULT(T_INT, i, ec_set_get_size(v1.val.ad)); break;
case T_LCLIST: RESULT(T_INT, i, lc_set_get_size(v1.val.ad)); break;
default: runtime( "Prefix, path, clist or eclist expected" );
}
}
INST(FI_SADR_SRC, 1, 1) { /* Get SADR src prefix */
ARG(1, T_NET);
if (!net_is_sadr(v1.val.net))
runtime( "SADR expected" );
net_addr_ip6_sadr *net = (void *) v1.val.net;
net_addr *src = lp_alloc(fs->pool, sizeof(net_addr_ip6));
net_fill_ip6(src, net->src_prefix, net->src_pxlen);
RESULT(T_NET, net, src);
}
INST(FI_ROA_MAXLEN, 1, 1) { /* Get ROA max prefix length */
ARG(1, T_NET);
if (!net_is_roa(v1.val.net))
runtime( "ROA expected" );
RESULT(T_INT, i, (v1.val.net->type == NET_ROA4) ?
((net_addr_roa4 *) v1.val.net)->max_pxlen :
((net_addr_roa6 *) v1.val.net)->max_pxlen);
}
INST(FI_ROA_ASN, 1, 1) { /* Get ROA ASN */
ARG(1, T_NET);
if (!net_is_roa(v1.val.net))
runtime( "ROA expected" );
RESULT(T_INT, i, (v1.val.net->type == NET_ROA4) ?
((net_addr_roa4 *) v1.val.net)->asn :
((net_addr_roa6 *) v1.val.net)->asn);
}
INST(FI_IP, 1, 1) { /* Convert prefix to ... */
ARG(1, T_NET);
RESULT(T_IP, ip, net_prefix(v1.val.net));
}
INST(FI_ROUTE_DISTINGUISHER, 1, 1) {
ARG(1, T_NET);
if (!net_is_vpn(v1.val.net))
runtime( "VPN address expected" );
RESULT(T_RD, ec, net_rd(v1.val.net));
}
INST(FI_AS_PATH_FIRST, 1, 1) { /* Get first ASN from AS PATH */
ARG(1, T_PATH);
int as = 0;
as_path_get_first(v1.val.ad, &as);
RESULT(T_INT, i, as);
}
INST(FI_AS_PATH_LAST, 1, 1) { /* Get last ASN from AS PATH */
ARG(1, T_PATH);
int as = 0;
as_path_get_last(v1.val.ad, &as);
RESULT(T_INT, i, as);
}
INST(FI_AS_PATH_LAST_NAG, 1, 1) { /* Get last ASN from non-aggregated part of AS PATH */
ARG(1, T_PATH);
RESULT(T_INT, i, as_path_get_last_nonaggregated(v1.val.ad));
}
INST(FI_RETURN, 1, 1) {
/* Acquire the return value */
ARG_ANY(1);
uint retpos = vstk.cnt;
/* Drop every sub-block including ourselves */
while ((estk.cnt-- > 0) && !(estk.item[estk.cnt].emask & FE_RETURN))
;
/* Now we are at the caller frame; if no such, try to convert to accept/reject. */
if (!estk.cnt)
if (vstk.val[retpos].type == T_BOOL)
if (vstk.val[retpos].val.i)
return F_ACCEPT;
else
return F_REJECT;
else
runtime("Can't return non-bool from non-function");
/* Set the value stack position */
vstk.cnt = estk.item[estk.cnt].ventry;
/* Copy the return value */
RESULT_VAL(vstk.val[retpos]);
}
INST(FI_CALL, 0, 1) {
/* First push the code */
LINEP(2,0);
curline.emask |= FE_RETURN;
/* Then push the arguments */
LINE(1,1);
}
INST(FI_DROP_RESULT, 1, 0) {
ARG_ANY(1);
}
INST(FI_CLEAR_LOCAL_VARS, 0, 0) { /* Clear local variables */
SYMBOL(1);
for ( ; sym != NULL; sym = sym->aux2)
((struct f_val *) sym->def)->type = T_VOID;
}
INST(FI_SWITCH, 1, 0) {
ARG_ANY(1);
POSTFIXIFY([[
dest->items[pos].tree = what->a[1].p;
]]);
const struct f_tree *t = find_tree(what->tree, &v1);
if (!t) {
v1.type = T_VOID;
t = find_tree(what->tree, &v1);
if (!t) {
debug( "No else statement?\n");
break;
}
}
/* It is actually possible to have t->data NULL */
LINEX(t->data);
}
INST(FI_IP_MASK, 2, 1) { /* IP.MASK(val) */
ARG(1, T_IP);
ARG(2, T_INT);
RESULT(T_IP, ip, [[ ipa_is_ip4(v1.val.ip) ?
ipa_from_ip4(ip4_and(ipa_to_ip4(v1.val.ip), ip4_mkmask(v2.val.i))) :
ipa_from_ip6(ip6_and(ipa_to_ip6(v1.val.ip), ip6_mkmask(v2.val.i))) ]]);
}
INST(FI_PATH_PREPEND, 2, 1) { /* Path prepend */
ARG(1, T_PATH);
ARG(2, T_INT);
RESULT(T_PATH, ad, [[ as_path_prepend(fs->pool, v1.val.ad, v2.val.i) ]]);
}
INST(FI_CLIST_ADD, 2, 1) { /* (Extended) Community list add */
ARG_ANY(1);
ARG_ANY(2);
if (v1.type == T_PATH)
runtime("Can't add to path");
else if (v1.type == T_CLIST)
{
/* Community (or cluster) list */
struct f_val dummy;
if ((v2.type == T_PAIR) || (v2.type == T_QUAD))
RESULT(T_CLIST, ad, [[ int_set_add(fs->pool, v1.val.ad, v2.val.i) ]]);
/* IP->Quad implicit conversion */
else if (val_is_ip4(&v2))
RESULT(T_CLIST, ad, [[ int_set_add(fs->pool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]);
else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy))
runtime("Can't add set");
else if (v2.type == T_CLIST)
RESULT(T_CLIST, ad, [[ int_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]);
else
runtime("Can't add non-pair");
}
else if (v1.type == T_ECLIST)
{
/* v2.val is either EC or EC-set */
if ((v2.type == T_SET) && eclist_set_type(v2.val.t))
runtime("Can't add set");
else if (v2.type == T_ECLIST)
RESULT(T_ECLIST, ad, [[ ec_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]);
else if (v2.type != T_EC)
runtime("Can't add non-ec");
else
RESULT(T_ECLIST, ad, [[ ec_set_add(fs->pool, v1.val.ad, v2.val.ec) ]]);
}
else if (v1.type == T_LCLIST)
{
/* v2.val is either LC or LC-set */
if ((v2.type == T_SET) && lclist_set_type(v2.val.t))
runtime("Can't add set");
else if (v2.type == T_LCLIST)
RESULT(T_LCLIST, ad, [[ lc_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]);
else if (v2.type != T_LC)
runtime("Can't add non-lc");
else
RESULT(T_LCLIST, ad, [[ lc_set_add(fs->pool, v1.val.ad, v2.val.lc) ]]);
}
else
runtime("Can't add to non-[e|l]clist");
}
INST(FI_CLIST_DEL, 2, 1) { /* (Extended) Community list add or delete */
ARG_ANY(1);
ARG_ANY(2);
if (v1.type == T_PATH)
{
const struct f_tree *set = NULL;
u32 key = 0;
if (v2.type == T_INT)
key = v2.val.i;
else if ((v2.type == T_SET) && (v2.val.t->from.type == T_INT))
set = v2.val.t;
else
runtime("Can't delete non-integer (set)");
RESULT(T_PATH, ad, [[ as_path_filter(fs->pool, v1.val.ad, set, key, 0) ]]);
}
else if (v1.type == T_CLIST)
{
/* Community (or cluster) list */
struct f_val dummy;
if ((v2.type == T_PAIR) || (v2.type == T_QUAD))
RESULT(T_CLIST, ad, [[ int_set_del(fs->pool, v1.val.ad, v2.val.i) ]]);
/* IP->Quad implicit conversion */
else if (val_is_ip4(&v2))
RESULT(T_CLIST, ad, [[ int_set_del(fs->pool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]);
else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST))
RESULT(T_CLIST, ad, [[ clist_filter(fs->pool, v1.val.ad, &v2, 0) ]]);
else
runtime("Can't delete non-pair");
}
else if (v1.type == T_ECLIST)
{
/* v2.val is either EC or EC-set */
if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST))
RESULT(T_ECLIST, ad, [[ eclist_filter(fs->pool, v1.val.ad, &v2, 0) ]]);
else if (v2.type != T_EC)
runtime("Can't delete non-ec");
else
RESULT(T_ECLIST, ad, [[ ec_set_del(fs->pool, v1.val.ad, v2.val.ec) ]]);
}
else if (v1.type == T_LCLIST)
{
/* v2.val is either LC or LC-set */
if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST))
RESULT(T_LCLIST, ad, [[ lclist_filter(fs->pool, v1.val.ad, &v2, 0) ]]);
else if (v2.type != T_LC)
runtime("Can't delete non-lc");
else
RESULT(T_LCLIST, ad, [[ lc_set_del(fs->pool, v1.val.ad, v2.val.lc) ]]);
}
else
runtime("Can't delete in non-[e|l]clist");
}
INST(FI_CLIST_FILTER, 2, 1) { /* (Extended) Community list add or delete */
ARG_ANY(1);
ARG_ANY(2);
if (v1.type == T_PATH)
{
u32 key = 0;
if ((v2.type == T_SET) && (v2.val.t->from.type == T_INT))
RESULT(T_PATH, ad, [[ as_path_filter(fs->pool, v1.val.ad, v2.val.t, key, 1) ]]);
else
runtime("Can't filter integer");
}
else if (v1.type == T_CLIST)
{
/* Community (or cluster) list */
struct f_val dummy;
if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST))
RESULT(T_CLIST, ad, [[ clist_filter(fs->pool, v1.val.ad, &v2, 1) ]]);
else
runtime("Can't filter pair");
}
else if (v1.type == T_ECLIST)
{
/* v2.val is either EC or EC-set */
if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST))
RESULT(T_ECLIST, ad, [[ eclist_filter(fs->pool, v1.val.ad, &v2, 1) ]]);
else
runtime("Can't filter ec");
}
else if (v1.type == T_LCLIST)
{
/* v2.val is either LC or LC-set */
if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST))
RESULT(T_LCLIST, ad, [[ lclist_filter(fs->pool, v1.val.ad, &v2, 1) ]]);
else
runtime("Can't filter lc");
}
else
runtime("Can't filter non-[e|l]clist");
}
INST(FI_ROA_CHECK_IMPLICIT, 0, 1) { /* ROA Check */
RTC(1);
ACCESS_RTE;
ACCESS_EATTRS;
const net_addr *net = (*fs->rte)->net->n.addr;
/* We ignore temporary attributes, probably not a problem here */
/* 0x02 is a value of BA_AS_PATH, we don't want to include BGP headers */
eattr *e = ea_find(*fs->eattrs, EA_CODE(PROTOCOL_BGP, 0x02));
if (!e || ((e->type & EAF_TYPE_MASK) != EAF_TYPE_AS_PATH))
runtime("Missing AS_PATH attribute");
u32 as = 0;
as_path_get_last(e->u.ptr, &as);
if (!table)
runtime("Missing ROA table");
if (table->addr_type != NET_ROA4 && table->addr_type != NET_ROA6)
runtime("Table type must be either ROA4 or ROA6");
if (table->addr_type != (net->type == NET_IP4 ? NET_ROA4 : NET_ROA6))
RESULT(T_ENUM_ROA, i, ROA_UNKNOWN); /* Prefix and table type mismatch */
else
RESULT(T_ENUM_ROA, i, [[ net_roa_check(table, net, as) ]]);
}
INST(FI_ROA_CHECK_EXPLICIT, 2, 1) { /* ROA Check */
ARG(1, T_NET);
ARG(2, T_INT);
RTC(3);
u32 as = v2.val.i;
if (!table)
runtime("Missing ROA table");
if (table->addr_type != NET_ROA4 && table->addr_type != NET_ROA6)
runtime("Table type must be either ROA4 or ROA6");
if (table->addr_type != (v1.val.net->type == NET_IP4 ? NET_ROA4 : NET_ROA6))
RESULT(T_ENUM_ROA, i, ROA_UNKNOWN); /* Prefix and table type mismatch */
else
RESULT(T_ENUM_ROA, i, [[ net_roa_check(table, v1.val.net, as) ]]);
}
INST(FI_FORMAT, 1, 0) { /* Format */
ARG_ANY(1);
RESULT(T_STRING, s, val_format_str(fs, &v1));
}
INST(FI_ASSERT, 1, 0) { /* Birdtest Assert */
ARG(1, T_BOOL);
POSTFIXIFY([[
dest->items[pos].s = what->a[1].p;
]]);
CALL(bt_assert_hook, res.val.i, what);
}
Reference in a new issue View git blame Copy permalink