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Merge commit '913ec57f' into thread-next-iface
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Maria Matejka
commit
1106927213
@ -1910,7 +1910,7 @@ protocol sections.
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<label id="babel-intro">
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<p>The Babel protocol
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(<rfc id="6126">) is a loop-avoiding distance-vector routing protocol that is
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(<rfc id="8966">) is a loop-avoiding distance-vector routing protocol that is
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robust and efficient both in ordinary wired networks and in wireless mesh
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networks. Babel is conceptually very simple in its operation and "just works"
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in its default configuration, though some configuration is possible and in some
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@ -2425,6 +2425,8 @@ avoid routing loops.
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<item> <rfc id="8092"> - BGP Large Communities Attribute
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<item> <rfc id="8203"> - BGP Administrative Shutdown Communication
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<item> <rfc id="8212"> - Default EBGP Route Propagation Behavior without Policies
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<item> <rfc id="8654"> - Extended Message Support for BGP
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<item> <rfc id="9072"> - Extended Optional Parameters Length for BGP OPEN Message
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<item> <rfc id="9117"> - Revised Validation Procedure for BGP Flow Specifications
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<item> <rfc id="9234"> - Route Leak Prevention and Detection Using Roles
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</itemize>
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@ -14,9 +14,8 @@
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/**
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* DOC: The Babel protocol
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*
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* Babel (RFC6126) is a loop-avoiding distance-vector routing protocol that is
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* robust and efficient both in ordinary wired networks and in wireless mesh
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* networks.
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* The Babel is a loop-avoiding distance-vector routing protocol that is robust
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* and efficient both in ordinary wired networks and in wireless mesh networks.
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*
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* The Babel protocol keeps state for each neighbour in a &babel_neighbor
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* struct, tracking received Hello and I Heard You (IHU) messages. A
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@ -33,6 +32,12 @@
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* an entry is updated by receiving updates from the network or when modified by
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* internal timers. The function selects from feasible and reachable routes the
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* one with the lowest metric to be announced to the core.
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*
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* Supported standards:
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* RFC 8966 - The Babel Routing Protocol
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* RFC 8967 - MAC Authentication for Babel
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* RFC 9079 - Source Specific Routing for Babel
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* RFC 9229 - IPv4 Routes with IPv6 Next Hop for Babel
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*/
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#include <stdlib.h>
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@ -297,7 +302,7 @@ babel_expire_routes(struct babel_proto *p)
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}
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/*
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* Add seqno request to the table of pending requests (RFC 6216 3.2.6) and send
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* Add seqno request to the table of pending requests (RFC 8966 3.2.6) and send
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* it to network. Do nothing if it is already in the table.
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*/
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@ -1021,7 +1026,7 @@ babel_send_update_(struct babel_iface *ifa, btime changed, struct fib *rtable)
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babel_enqueue(&msg, ifa);
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/* RFC 6126 3.7.3 - update feasibility distance for redistributed routes */
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/* RFC 8966 3.7.3 - update feasibility distance for redistributed routes */
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if (e->router_id != p->router_id)
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{
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struct babel_source *s = babel_get_source(p, e, e->router_id, msg.update.seqno);
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@ -1324,7 +1329,7 @@ babel_handle_update(union babel_msg *m, struct babel_iface *ifa)
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best = e->selected;
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/*
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* RFC section 3.8.2.2 - Dealing with unfeasible updates. Generate a one-off
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* RFC 8966 3.8.2.2 - dealing with unfeasible updates. Generate a one-off
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* (not retransmitted) unicast seqno request to the originator of this update.
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* Note: !feasible -> s exists, check for 's' is just for clarity / safety.
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*/
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@ -1369,7 +1374,7 @@ babel_handle_route_request(union babel_msg *m, struct babel_iface *ifa)
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struct babel_proto *p = ifa->proto;
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struct babel_msg_route_request *msg = &m->route_request;
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/* RFC 6126 3.8.1.1 */
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/* RFC 8966 3.8.1.1 */
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/* Wildcard request - full update on the interface */
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if (msg->full)
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@ -1427,7 +1432,7 @@ babel_handle_seqno_request(union babel_msg *m, struct babel_iface *ifa)
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struct babel_proto *p = ifa->proto;
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struct babel_msg_seqno_request *msg = &m->seqno_request;
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/* RFC 6126 3.8.1.2 */
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/* RFC 8966 3.8.1.2 */
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TRACE(D_PACKETS, "Handling seqno request for %N router-id %lR seqno %d hop count %d",
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&msg->net, msg->router_id, msg->seqno, msg->hop_count);
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@ -101,9 +101,9 @@
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* RFC 8203 - BGP Administrative Shutdown Communication
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* RFC 8212 - Default EBGP Route Propagation Behavior without Policies
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* RFC 8654 - Extended Message Support for BGP
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* RFC 9072 - Extended Optional Parameters Length for BGP OPEN Message
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* RFC 9117 - Revised Validation Procedure for BGP Flow Specifications
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* RFC 9234 - Route Leak Prevention and Detection Using Roles
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* draft-ietf-idr-ext-opt-param-07
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* draft-uttaro-idr-bgp-persistence-04
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* draft-walton-bgp-hostname-capability-02
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*/
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@ -97,7 +97,7 @@ struct bgp_config {
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int capabilities; /* Enable capability handshake [RFC 5492] */
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int enable_refresh; /* Enable local support for route refresh [RFC 2918] */
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int enable_as4; /* Enable local support for 4B AS numbers [RFC 6793] */
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int enable_extended_messages; /* Enable local support for extended messages [draft] */
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int enable_extended_messages; /* Enable local support for extended messages [RFC 8654] */
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int enable_hostname; /* Enable local support for hostname [draft] */
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u32 rr_cluster_id; /* Route reflector cluster ID, if different from local ID */
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int rr_client; /* Whether neighbor is RR client of me */
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@ -237,7 +237,7 @@ struct bgp_caps {
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u32 as4_number; /* Announced ASN */
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u8 as4_support; /* Four-octet AS capability, RFC 6793 */
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u8 ext_messages; /* Extended message length, RFC draft */
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u8 ext_messages; /* Extended message length, RFC 8654 */
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u8 route_refresh; /* Route refresh capability, RFC 2918 */
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u8 enhanced_refresh; /* Enhanced route refresh, RFC 7313 */
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u8 role; /* BGP role capability, RFC 9234 */
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@ -518,7 +518,7 @@ bgp_read_capabilities(struct bgp_conn *conn, byte *pos, int len)
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}
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break;
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case 6: /* Extended message length capability, RFC draft */
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case 6: /* Extended message length capability, RFC 8654 */
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if (cl != 0)
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goto err;
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@ -711,7 +711,7 @@ bgp_read_options(struct bgp_conn *conn, byte *pos, uint len, uint rest)
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struct bgp_proto *p = conn->bgp;
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int ext = 0;
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/* Handle extended length (draft-ietf-idr-ext-opt-param-07) */
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/* Handle extended length, RFC 9072 */
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if ((len > 0) && (rest > 0) && (pos[0] == 255))
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{
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if (rest < 3)
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@ -796,7 +796,7 @@ bgp_create_open(struct bgp_conn *conn, byte *buf)
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buf[10] = 2; /* Option 2: Capability list */
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buf[11] = len; /* Option data length */
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}
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else /* draft-ietf-idr-ext-opt-param-07 */
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else /* Extended length, RFC 9072 */
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{
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/* Move capabilities 4 B forward */
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memmove(buf + 16, pos, len);
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