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Filter: Ethernet and EVPN support

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This commit is contained in:
Ondrej Zajicek 2024-01-25 18:39:40 +01:00
parent dc17f1982f
commit c5c9bd811b
6 changed files with 228 additions and 9 deletions
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9
filter/config.Y
View File

@ -126,6 +126,7 @@ f_valid_set_type(int type)
case T_EC:
case T_LC:
case T_RD:
case T_MAC:
return 1;
default:
@ -357,7 +358,7 @@ CF_DECLS
CF_KEYWORDS_EXCLUSIVE(IN)
CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
ACCEPT, REJECT, ERROR,
INT, BOOL, IP, PREFIX, RD, PAIR, QUAD, EC, LC,
INT, BOOL, IP, PREFIX, RD, MAC, PAIR, QUAD, EC, LC,
SET, STRING, BYTESTRING, BGPMASK, BGPPATH, CLIST, ECLIST, LCLIST,
IF, THEN, ELSE, CASE,
FOR, DO,
@ -455,6 +456,7 @@ type:
| BOOL { $$ = T_BOOL; }
| IP { $$ = T_IP; }
| RD { $$ = T_RD; }
| MAC { $$ = T_MAC; }
| PREFIX { $$ = T_NET; }
| PAIR { $$ = T_PAIR; }
| QUAD { $$ = T_QUAD; }
@ -475,8 +477,9 @@ type:
case T_QUAD:
case T_EC:
case T_LC:
case T_RD:
case T_IP:
case T_RD:
case T_MAC:
$$ = T_SET;
break;
@ -640,6 +643,7 @@ set_atom:
NUM { $$.type = T_INT; $$.val.i = $1; }
| fipa { $$ = $1; }
| VPN_RD { $$.type = T_RD; $$.val.ec = $1; }
| MAC_ { $$.type = T_MAC; $$.val.mac = $1; }
| ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); }
| '(' term ')' {
$$ = cf_eval($2, T_VOID);
@ -797,6 +801,7 @@ constant:
| BYTETEXT { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_BYTESTRING, .val.bs = $1, }); }
| fipa { $$ = f_new_inst(FI_CONSTANT, $1); }
| VPN_RD { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_RD, .val.ec = $1, }); }
| MAC_ { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_MAC, .val.mac = $1, }); }
| net_ { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_NET, .val.net = $1, }); }
| '[' ']' { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_SET, .val.t = NULL, }); }
| '[' set_items ']' {

6
filter/data.c
View File

@ -43,6 +43,8 @@ static const char * const f_type_str[] = {
[T_ENUM_NETTYPE] = "enum nettype",
[T_ENUM_RA_PREFERENCE] = "enum ra_preference",
[T_ENUM_AF] = "enum af",
[T_ENUM_MPLS_POLICY] = "enum mpls_policy",
[T_ENUM_NET_EVPN] = "enum net_evpn",
[T_IP] = "ip",
[T_NET] = "prefix",
@ -56,6 +58,7 @@ static const char * const f_type_str[] = {
[T_LC] = "lc",
[T_LCLIST] = "lclist",
[T_RD] = "rd",
[T_MAC] = "mac",
[T_ROUTE] = "route",
[T_ROUTES_BLOCK] = "block of routes",
@ -206,6 +209,8 @@ val_compare(const struct f_val *v1, const struct f_val *v2)
return lcomm_cmp(v1->val.lc, v2->val.lc);
case T_IP:
return ipa_compare(v1->val.ip, v2->val.ip);
case T_MAC:
return mac_compare(v1->val.mac, v2->val.mac);
case T_NET:
return net_compare(v1->val.net, v2->val.net);
case T_STRING:
@ -633,6 +638,7 @@ val_format(const struct f_val *v, buffer *buf)
case T_EC: ec_format(buf2, v->val.ec); buffer_print(buf, "%s", buf2); return;
case T_LC: lc_format(buf2, v->val.lc); buffer_print(buf, "%s", buf2); return;
case T_RD: rd_format(v->val.ec, buf2, 1024); buffer_print(buf, "%s", buf2); return;
case T_MAC: buffer_print(buf, "%6b", v->val.mac.addr); return;
case T_PREFIX_SET: trie_format(v->val.ti, buf); return;
case T_SET: tree_format(v->val.t, buf); return;
case T_ENUM: buffer_print(buf, "(enum %x)%u", v->type, v->val.i); return;

3
filter/data.h
View File

@ -43,6 +43,7 @@ enum f_type {
T_ENUM_RA_PREFERENCE = 0x37,
T_ENUM_AF = 0x38,
T_ENUM_MPLS_POLICY = 0x39,
T_ENUM_NET_EVPN = 0x3a,
/* new enums go here */
T_ENUM_EMPTY = 0x3f, /* Special hack for atomic_aggr */
@ -63,6 +64,7 @@ enum f_type {
T_RD = 0x2a, /* Route distinguisher for VPN addresses */
T_PATH_MASK_ITEM = 0x2b, /* Path mask item for path mask constructors */
T_BYTESTRING = 0x2c,
T_MAC = 0x2d,
T_ROUTE = 0x78,
T_ROUTES_BLOCK = 0x79,
@ -86,6 +88,7 @@ struct f_val {
u64 ec;
lcomm lc;
ip_addr ip;
mac_addr mac;
const net_addr *net;
const char *s;
const struct adata *bs;

113
filter/f-inst.c
View File

@ -1046,16 +1046,117 @@
]]);
/* Convert prefix to IP */
METHOD_R(T_NET, ip, T_IP, ip, net_prefix(v1.val.net));
METHOD(T_NET, ip, 0, [[
const net_addr_union *net = (void *) v1.val.net;
if ((net->n.type == NET_EVPN) && (net->evpn.subtype == NET_EVPN_MAC))
RESULT(T_IP, ip, (net->n.length == sizeof(net_addr_evpn_mac_ip)) ? net->evpn.mac_ip.ip : IPA_NONE);
else
RESULT(T_IP, ip, net_prefix(v1.val.net));
]]);
/* Get route distinguisher */
METHOD(T_NET, rd, 0, [[
if (!net_type_match(v1.val.net, NB_VPN | NB_EVPN))
runtime( "VPN or EVPN address expected" );
INST(FI_ROUTE_DISTINGUISHER, 1, 1) {
ARG(1, T_NET);
METHOD_CONSTRUCTOR("rd");
if (!net_is_vpn(v1.val.net))
runtime( "VPN address expected" );
RESULT(T_RD, ec, net_rd(v1.val.net));
]]);
/* Get MAC address */
METHOD(T_NET, mac, 0, [[
const net_addr_union *net = (void *) v1.val.net;
if (net->n.type == NET_ETH)
RESULT(T_MAC, mac, net->eth.mac);
else if ((net->n.type == NET_EVPN) && (net->evpn.subtype == NET_EVPN_MAC))
RESULT(T_MAC, mac, net->evpn.mac.mac);
else
runtime( "Ethernet or EVPN MAC expected" );
]]);
/* Get VLAN ID */
METHOD(T_NET, vlan_id, 0, [[
if (v1.val.net->type != NET_ETH)
runtime( "Ethernet address expected" );
const net_addr_eth *eth = (void *) v1.val.net;
RESULT(T_INT, i, eth->vid);
]]);
/* Get EVPN type */
METHOD(T_NET, evpn_type, 0, [[
if (v1.val.net->type != NET_EVPN)
runtime( "EVPN address expected" );
const net_addr_evpn *evpn = (void *) v1.val.net;
RESULT(T_ENUM_NET_EVPN, i, evpn->subtype);
]]);
/* Get EVPN tag */
METHOD(T_NET, evpn_tag, 0, [[
if (v1.val.net->type != NET_EVPN)
runtime( "EVPN address expected" );
const net_addr_evpn *evpn = (void *) v1.val.net;
if (evpn->subtype > NET_EVPN_IMET)
runtime( "EVPN EAD/MAC/IMET address expected" );
RESULT(T_INT, i, evpn->tag);
]]);
/* Get EVPN ESI */
METHOD(T_NET, evpn_esi, 0, [[
if (v1.val.net->type != NET_EVPN)
runtime( "EVPN address expected" );
const net_addr_evpn *evpn = (void *) v1.val.net;
const evpn_esi *esi;
switch (evpn->subtype)
{
case NET_EVPN_EAD:
esi = &evpn->ead.esi;
break;
case NET_EVPN_ES:
esi = &evpn->es.esi;
break;
default:
runtime( "EVPN EAD/ES address expected" );
}
struct adata *bs;
bs = falloc(sizeof(struct adata) + sizeof(evpn_esi));
bs->length = sizeof(evpn_esi);
memcpy(bs->data, esi, sizeof(evpn_esi));
RESULT(T_BYTESTRING, bs, bs);
]]);
/* Get EVPN outer IP */
METHOD(T_NET, router_ip, 0, [[
if (v1.val.net->type != NET_EVPN)
runtime( "EVPN address expected" );
const net_addr_evpn *evpn = (void *) v1.val.net;
switch (evpn->subtype)
{
case NET_EVPN_IMET:
RESULT(T_IP, ip, evpn->imet.rtr);
break;
case NET_EVPN_ES:
RESULT(T_IP, ip, evpn->es.rtr);
break;
default:
runtime( "EVPN IMET/ES address expected" );
}
]]);
/* Get first ASN from AS PATH */
METHOD_R(T_PATH, first, T_INT, i, ({ u32 as = 0; as_path_get_first(v1.val.ad, &as); as; }));

101
filter/test.conf
View File

@ -1830,6 +1830,107 @@ bt_test_suite(t_net_sadr, "Testing IPv6 SADR nets");
/*
* Testing Ethernet nets
* ---------------------
*/
function t_net_eth()
{
prefix p;
p = eth 12:3f:c9:48:9c:9b;
bt_assert(format(p) = "12:3f:c9:48:9c:9b");
bt_assert(p.type = NET_ETH);
bt_assert(p.mac = 12:3f:c9:48:9c:9b);
bt_assert(p.vlan_id = 0);
p = eth 16:36:f8:80:5b:48 vlan 100;
bt_assert(format(p) = "16:36:f8:80:5b:48 vlan 100");
bt_assert(p.type = NET_ETH);
bt_assert(p.mac = 16:36:f8:80:5b:48);
bt_assert(p.vlan_id = 100);
}
bt_test_suite(t_net_eth, "Testing Ethernet nets");
/*
* Testing EVPN nets
* -----------------
*/
function t_net_evpn()
{
prefix p;
p = evpn ead 10:1010 210 00:10:20:30:40:50:60:70:80:90;
bt_assert(format(p) = "evpn ead 10:1010 210 00:10:20:30:40:50:60:70:80:90");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_EAD);
bt_assert(p.rd = 10:1010);
bt_assert(p.evpn_tag = 210);
bt_assert(p.evpn_esi = 00:10:20:30:40:50:60:70:80:90);
p = evpn mac 10:1020 220 12:a6:54:da:bc:bf *;
bt_assert(format(p) = "evpn mac 10:1020 220 12:a6:54:da:bc:bf *");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_MAC);
bt_assert(p.rd = 10:1020);
bt_assert(p.evpn_tag = 220);
bt_assert(p.mac = 12:a6:54:da:bc:bf);
bt_assert(p.ip = ::);
p = evpn mac 10:1020 224 16:c2:8d:50:86:c5 192.0.2.10;
bt_assert(format(p) = "evpn mac 10:1020 224 16:c2:8d:50:86:c5 192.0.2.10");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_MAC);
bt_assert(p.rd = 10:1020);
bt_assert(p.evpn_tag = 224);
bt_assert(p.mac = 16:c2:8d:50:86:c5);
bt_assert(p.ip = 192.0.2.10);
p = evpn mac 10:1020 226 2a:3b:24:3d:f0:a0 2001:db8:10:20::1;
bt_assert(format(p) = "evpn mac 10:1020 226 2a:3b:24:3d:f0:a0 2001:db8:10:20::1");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_MAC);
bt_assert(p.rd = 10:1020);
bt_assert(p.evpn_tag = 226);
bt_assert(p.mac = 2a:3b:24:3d:f0:a0);
bt_assert(p.ip = 2001:db8:10:20::1);
p = evpn imet 10:1030 234 192.0.2.20;
bt_assert(format(p) = "evpn imet 10:1030 234 192.0.2.20");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_IMET);
bt_assert(p.rd = 10:1030);
bt_assert(p.evpn_tag = 234);
bt_assert(p.router_ip = 192.0.2.20);
p = evpn imet 10:1030 236 2001:db8:10:20::2;
bt_assert(format(p) = "evpn imet 10:1030 236 2001:db8:10:20::2");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_IMET);
bt_assert(p.rd = 10:1030);
bt_assert(p.evpn_tag = 236);
bt_assert(p.router_ip = 2001:db8:10:20::2);
p = evpn es 10:1040 00:10:20:30:40:50:60:70:80:90 192.0.2.40;
bt_assert(format(p) = "evpn es 10:1040 00:10:20:30:40:50:60:70:80:90 192.0.2.40");
bt_assert(p.type = NET_EVPN);
bt_assert(p.evpn_type = NET_EVPN_ES);
bt_assert(p.rd = 10:1040);
bt_assert(p.evpn_esi = 00:10:20:30:40:50:60:70:80:90);
bt_assert(p.router_ip = 192.0.2.40);
}
bt_test_suite(t_net_evpn, "Testing EVPN nets");
/*
* Testing defined() function
* --------------------------

3
proto/aggregator/aggregator.c
View File

@ -540,6 +540,9 @@ aggregator_rt_notify(struct proto *P, struct channel *src_ch, net *net, rte *new
case T_IP:
MX(ip);
break;
case T_MAC:
MX(mac);
break;
case T_NET:
mem_hash_mix_num(&haux, net_hash(IT(net)));
break;