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Merge pull request #17987 from pguibert6WIND/evpn_bgp_l2_attr_ext_community

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bgpd: add L2 attr community support as per RFC8214
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Russ White 2025-02-05 10:17:46 -05:00 committed by GitHub
parent 0b42b4ce6d af8e792205
commit a02ec27693
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2 changed files with 31 additions and 0 deletions
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25
bgpd/bgp_ecommunity.c
View file

@ -1337,6 +1337,31 @@ char *ecommunity_ecom2str(struct ecommunity *ecom, int format, int filter)
snprintf(encbuf, sizeof(encbuf),
"DF: (alg: %u, pref: %u)", alg,
pref);
} else if (*pnt == ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR) {
uint16_t flags, l2mtu;
++pnt;
memcpy(&flags, pnt, 2);
++pnt;
++pnt;
memcpy(&l2mtu, pnt, 2);
snprintf(encbuf, sizeof(encbuf),
"L2: P flag:%c, B Flag %c, C word %c, MTU %d",
CHECK_FLAG(flags,
ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_PRIMARY_PE_FLAG)
? 'Y'
: 'N',
CHECK_FLAG(flags,
ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_BACKUP_PE_FLAG)
? 'Y'
: 'N',
CHECK_FLAG(flags,
ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_CONTROL_WORD_FLAG)
? 'Y'
: 'N',
l2mtu);
} else
unk_ecom = true;
} else if (type == ECOMMUNITY_ENCODE_REDIRECT_IP_NH) {

6
bgpd/bgp_ecommunity.h
View file

@ -68,12 +68,18 @@
#define ECOMMUNITY_EVPN_SUBTYPE_ESI_LABEL 0x01
#define ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT 0x02
#define ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC 0x03
#define ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR 0x04
#define ECOMMUNITY_EVPN_SUBTYPE_DF_ELECTION 0x06
#define ECOMMUNITY_EVPN_SUBTYPE_DEF_GW 0x0d
#define ECOMMUNITY_EVPN_SUBTYPE_ND 0x08
#define ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY 0x01
/* Layer2 Attributes: RFC8214 */
#define ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_PRIMARY_PE_FLAG 0x01
#define ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_BACKUP_PE_FLAG 0x02
#define ECOMMUNITY_EVPN_SUBTYPE_LAYER2_ATTR_CONTROL_WORD_FLAG 0x04
/* DF alg bits - only lower 5 bits are applicable */
#define ECOMMUNITY_EVPN_SUBTYPE_DF_ALG_BITS 0x1f