void bgp_add_routermac_ecom(struct attr *attr, struct ethaddr *routermac)
{
- struct ecommunity_val routermac_ecom;
-
- 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->ecommunity)
- attr->ecommunity = ecommunity_new();
- ecommunity_add_val(attr->ecommunity, &routermac_ecom);
- ecommunity_str (attr->ecommunity);
+ struct ecommunity_val routermac_ecom;
+
+ 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
*/
int str2esi(const char *str, struct eth_segment_id *id)
{
- unsigned int a[ESI_LEN];
- int i;
-
- 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)
- {
- /* error in incoming str length */
- return 0;
- }
- /* valid mac address */
- if (!id)
- return 1;
- for (i = 0; i < ESI_LEN; ++i)
- id->val[i] = a[i] & 0xff;
- return 1;
+ unsigned int a[ESI_LEN];
+ int i;
+
+ 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) {
+ /* error in incoming str length */
+ return 0;
+ }
+ /* valid mac address */
+ if (!id)
+ return 1;
+ for (i = 0; i < ESI_LEN; ++i)
+ id->val[i] = a[i] & 0xff;
+ return 1;
}
char *esi2str(struct eth_segment_id *id)
{
- char *ptr;
- u_char *val;
+ char *ptr;
+ uint8_t *val;
- if (!id)
- return NULL;
+ if (!id)
+ return NULL;
- val = id->val;
- ptr = (char *)XMALLOC(MTYPE_TMP, (ESI_LEN * 2 + ESI_LEN - 1 + 1) * sizeof(char));
+ val = id->val;
+ 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]);
+ 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]);
- return ptr;
+ return ptr;
}
char *ecom_mac2str(char *ecom_mac)
{
- char *en;
+ char *en;
+
+ en = ecom_mac;
+ en += 2;
+
+ 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;
- en = ecom_mac;
- en += 2;
+ /* 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;
- return prefix_mac2str((struct ethaddr *)en, NULL, 0);
+ 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.
*/
-u_int32_t
-bgp_attr_mac_mobility_seqnum (struct attr *attr, u_char *sticky)
+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;
- u_char 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++)
- {
- u_char *pnt;
- u_char type, sub_type;
- u_int32_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++;
- seq_num = (*pnt++ << 24);
- seq_num |= (*pnt++ << 16);
- seq_num |= (*pnt++ << 8);
- seq_num |= (*pnt++);
-
- return seq_num;
- }
-
- return 0;
+ 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;
- struct prefix *src = &p2;
-
- if (!dst || dst->family == 0)
- return -1;
- /* store initial prefix in src */
- prefix_copy(src, dst);
- memset(dst, 0, sizeof(struct prefix));
- p_evpn_p = &(dst->u.prefix_evpn);
- dst->family = AF_ETHERNET;
- p_evpn_p->route_type = evpn_type;
- if (evpn_type == BGP_EVPN_IP_PREFIX_ROUTE) {
- p_evpn_p->eth_tag = eth_tag;
- p_evpn_p->ip_prefix_length = p2.prefixlen;
- if (src->family == AF_INET) {
- SET_IPADDR_V4 (&p_evpn_p->ip);
- memcpy(&p_evpn_p->ip.ipaddr_v4, &src->u.prefix4,
- sizeof(struct in_addr));
- dst->prefixlen = (u_char) PREFIX_LEN_ROUTE_TYPE_5_IPV4;
- } else {
- SET_IPADDR_V6 (&p_evpn_p->ip);
- memcpy(&p_evpn_p->ip.ipaddr_v6, &src->u.prefix6,
- sizeof(struct in6_addr));
- dst->prefixlen = (u_char) PREFIX_LEN_ROUTE_TYPE_5_IPV6;
- }
- } else
- return -1;
- return 0;
+ struct evpn_addr *p_evpn_p;
+ struct prefix p2;
+ struct prefix *src = &p2;
+
+ if (!dst || dst->family == 0)
+ return -1;
+ /* store initial prefix in src */
+ prefix_copy(src, dst);
+ memset(dst, 0, sizeof(struct prefix));
+ p_evpn_p = &(dst->u.prefix_evpn);
+ dst->family = AF_EVPN;
+ p_evpn_p->route_type = evpn_type;
+ 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) {
+ 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 = (uint8_t)PREFIX_LEN_ROUTE_TYPE_5_IPV4;
+ } else {
+ 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 = (uint8_t)PREFIX_LEN_ROUTE_TYPE_5_IPV6;
+ }
+ } else
+ return -1;
+ return 0;
}