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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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115
filter/f-inst.c
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@@ -1046,15 +1046,116 @@
]]);
/* 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; }));