/* Ethernet-VPN Attribute handling file
- Copyright (C) 2016 6WIND
-
-This file is part of FRRouting.
-
-FRRouting is free software; you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
-later version.
-
-FRRouting is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with FRRouting; see the file COPYING. If not, write to the Free
-Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+ * Copyright (C) 2016 6WIND
+ *
+ * This file is part of FRRouting.
+ *
+ * FRRouting is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * FRRouting is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#include <zebra.h>
#include "bgpd/bgp_attr_evpn.h"
#include "bgpd/bgp_ecommunity.h"
#include "bgpd/bgp_evpn.h"
+#include "bgpd/bgp_evpn_private.h"
void bgp_add_routermac_ecom(struct attr *attr, struct ethaddr *routermac)
{
struct ecommunity_val routermac_ecom;
- if (attr->extra) {
- memset(&routermac_ecom, 0, sizeof(struct ecommunity_val));
- routermac_ecom.val[0] = ECOMMUNITY_ENCODE_EVPN;
- routermac_ecom.val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
- memcpy(&routermac_ecom.val[2], routermac->octet, ETHER_ADDR_LEN);
- if (!attr->extra->ecommunity)
- attr->extra->ecommunity = ecommunity_new();
- ecommunity_add_val(attr->extra->ecommunity, &routermac_ecom);
- ecommunity_str (attr->extra->ecommunity);
- }
+ memset(&routermac_ecom, 0, sizeof(struct ecommunity_val));
+ routermac_ecom.val[0] = ECOMMUNITY_ENCODE_EVPN;
+ routermac_ecom.val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
+ memcpy(&routermac_ecom.val[2], routermac->octet, ETH_ALEN);
+ if (!attr->ecommunity)
+ attr->ecommunity = ecommunity_new();
+ ecommunity_add_val(attr->ecommunity, &routermac_ecom);
+ ecommunity_str(attr->ecommunity);
}
/* converts to an esi
if (!str)
return 0;
- if (sscanf (str, "%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x",
- a + 0, a + 1, a + 2, a + 3, a + 4, a + 5,
- a + 6, a + 7, a + 8, a + 9) != ESI_LEN)
- {
+ if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1,
+ a + 2, a + 3, a + 4, a + 5, a + 6, a + 7, a + 8, a + 9)
+ != ESI_LEN) {
/* error in incoming str length */
return 0;
}
char *esi2str(struct eth_segment_id *id)
{
char *ptr;
- u_char *val;
+ uint8_t *val;
if (!id)
return NULL;
val = id->val;
- ptr = (char *)XMALLOC(MTYPE_TMP, (ESI_LEN * 2 + ESI_LEN - 1 + 1) * sizeof(char));
+ ptr = (char *)XMALLOC(MTYPE_TMP,
+ (ESI_LEN * 2 + ESI_LEN - 1 + 1) * sizeof(char));
snprintf(ptr, (ESI_LEN * 2 + ESI_LEN - 1 + 1),
- "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
- val[0], val[1], val[2], val[3], val[4],
- val[5], val[6], val[7], val[8], val[9]);
+ "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", val[0],
+ val[1], val[2], val[3], val[4], val[5], val[6], val[7], val[8],
+ val[9]);
return ptr;
}
en = ecom_mac;
en += 2;
- return prefix_mac2str((struct ethaddr *)en, NULL, 0);
+
+ return prefix_mac2str((struct ethaddr *)en, NULL, 0);
+}
+
+/* Fetch router-mac from extended community */
+void bgp_attr_rmac(struct attr *attr, struct ethaddr *rmac)
+{
+ int i = 0;
+ struct ecommunity *ecom;
+
+ ecom = attr->ecommunity;
+ if (!ecom || !ecom->size)
+ return;
+
+ /* If there is a router mac extended community, set RMAC in attr */
+ for (i = 0; i < ecom->size; i++) {
+ uint8_t *pnt = NULL;
+ uint8_t type = 0;
+ uint8_t sub_type = 0;
+
+ pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
+ type = *pnt++;
+ sub_type = *pnt++;
+
+ if (!(type == ECOMMUNITY_ENCODE_EVPN
+ && sub_type == ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC))
+ continue;
+
+ memcpy(rmac, pnt, ETH_ALEN);
+ }
+}
+
+/*
+ * return true if attr contains default gw extended community
+ */
+uint8_t bgp_attr_default_gw(struct attr *attr)
+{
+ struct ecommunity *ecom;
+ int i;
+
+ ecom = attr->ecommunity;
+ if (!ecom || !ecom->size)
+ return 0;
+
+ /* If there is a default gw extendd community return true otherwise
+ * return 0 */
+ for (i = 0; i < ecom->size; i++) {
+ uint8_t *pnt;
+ uint8_t type, sub_type;
+
+ pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
+ type = *pnt++;
+ sub_type = *pnt++;
+
+ if ((type == ECOMMUNITY_ENCODE_OPAQUE
+ && sub_type == ECOMMUNITY_EVPN_SUBTYPE_DEF_GW))
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Fetch and return the sequence number from MAC Mobility extended
+ * community, if present, else 0.
+ */
+uint32_t bgp_attr_mac_mobility_seqnum(struct attr *attr, uint8_t *sticky)
+{
+ struct ecommunity *ecom;
+ int i;
+ uint8_t flags = 0;
+
+ ecom = attr->ecommunity;
+ if (!ecom || !ecom->size)
+ return 0;
+
+ /* If there is a MAC Mobility extended community, return its
+ * sequence number.
+ * TODO: RFC is silent on handling of multiple MAC mobility extended
+ * communities for the same route. We will bail out upon the first
+ * one.
+ */
+ for (i = 0; i < ecom->size; i++) {
+ uint8_t *pnt;
+ uint8_t type, sub_type;
+ uint32_t seq_num;
+
+ pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
+ type = *pnt++;
+ sub_type = *pnt++;
+ if (!(type == ECOMMUNITY_ENCODE_EVPN
+ && sub_type == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY))
+ continue;
+ flags = *pnt++;
+
+ if (flags & ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY)
+ *sticky = 1;
+ else
+ *sticky = 0;
+
+ pnt++;
+ pnt = ptr_get_be32(pnt, &seq_num);
+ (void)pnt; /* consume value */
+ return seq_num;
+ }
+
+ return 0;
+}
+
+/*
+ * return true if attr contains router flag extended community
+ */
+void bgp_attr_evpn_na_flag(struct attr *attr, uint8_t *router_flag)
+{
+ struct ecommunity *ecom;
+ int i;
+ uint8_t val;
+
+ ecom = attr->ecommunity;
+ if (!ecom || !ecom->size)
+ return;
+
+ /* If there is a evpn na extendd community set router_flag */
+ for (i = 0; i < ecom->size; i++) {
+ uint8_t *pnt;
+ uint8_t type, sub_type;
+
+ pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
+ type = *pnt++;
+ sub_type = *pnt++;
+
+ if (type == ECOMMUNITY_ENCODE_EVPN &&
+ sub_type == ECOMMUNITY_EVPN_SUBTYPE_ND) {
+ val = *pnt++;
+ if (val & ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG) {
+ *router_flag = 1;
+ break;
+ }
+ }
+ }
}
/* dst prefix must be AF_INET or AF_INET6 prefix, to forge EVPN prefix */
-extern int
-bgp_build_evpn_prefix(int evpn_type, uint32_t eth_tag, struct prefix *dst)
+extern int bgp_build_evpn_prefix(int evpn_type, uint32_t eth_tag,
+ struct prefix *dst)
{
struct evpn_addr *p_evpn_p;
struct prefix p2;
prefix_copy(src, dst);
memset(dst, 0, sizeof(struct prefix));
p_evpn_p = &(dst->u.prefix_evpn);
- dst->family = AF_ETHERNET;
+ dst->family = AF_EVPN;
p_evpn_p->route_type = evpn_type;
- if (evpn_type == EVPN_IP_PREFIX) {
- p_evpn_p->eth_tag = eth_tag;
- p_evpn_p->ip_prefix_length = p2.prefixlen;
+ if (evpn_type == BGP_EVPN_IP_PREFIX_ROUTE) {
+ p_evpn_p->prefix_addr.eth_tag = eth_tag;
+ p_evpn_p->prefix_addr.ip_prefix_length = p2.prefixlen;
if (src->family == AF_INET) {
- p_evpn_p->flags = IP_PREFIX_V4;
- memcpy(&p_evpn_p->ip.v4_addr, &src->u.prefix4,
+ SET_IPADDR_V4(&p_evpn_p->prefix_addr.ip);
+ memcpy(&p_evpn_p->prefix_addr.ip.ipaddr_v4,
+ &src->u.prefix4,
sizeof(struct in_addr));
- dst->prefixlen = (u_char) PREFIX_LEN_ROUTE_TYPE_5_IPV4;
+ dst->prefixlen = (uint8_t)PREFIX_LEN_ROUTE_TYPE_5_IPV4;
} else {
- p_evpn_p->flags = IP_PREFIX_V6;
- memcpy(&p_evpn_p->ip.v6_addr, &src->u.prefix6,
+ SET_IPADDR_V6(&p_evpn_p->prefix_addr.ip);
+ memcpy(&p_evpn_p->prefix_addr.ip.ipaddr_v6,
+ &src->u.prefix6,
sizeof(struct in6_addr));
- dst->prefixlen = (u_char) PREFIX_LEN_ROUTE_TYPE_5_IPV6;
+ dst->prefixlen = (uint8_t)PREFIX_LEN_ROUTE_TYPE_5_IPV6;
}
} else
return -1;
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