[bgpd] Merge AS4 support
2007-10-14 Paul Jakma <paul.jakma@sun.com>
* NEWS: Note that MRT dumps are now version 2
* (general) Merge in Juergen Kammer's AS4 patch.
2007-09-27 Paul Jakma <paul.jakma@sun.com>
* bgp_aspath.c: (assegment_normalise) remove duplicates from
from sets.
(aspath_reconcile_as4) disregard a broken part of the RFC around
error handling in path reconciliation.
* aspath_test.c: Test dupe-weeding from sets.
Test that reconciliation merges AS_PATH and AS4_PATH where
former is shorter than latter.
2007-09-26 Paul Jakma <paul.jakma@sun.com>
* aspath_test.c: Test AS4_PATH reconcilation where length
of AS_PATH and AS4_PATH is same.
2007-09-25 Paul Jakma <paul.jakma@sun.com>
* bgp_open.c: (peek_for_as4_capability) Fix to work.
* bgp_packet.c: (bgp_open_receive) Fix sanity check of as4.
* tests/bgp_capability_test.c: (general) Extend tests to validate
peek_for_as4_capability.
Add test of full OPEN Option block, with multiple capabilities,
both as a series of Option, and a single option.
Add some crap to beginning of stream, to prevent code depending
on getp == 0.
2007-09-18 Paul Jakma <paul.jakma@sun.com>
* bgp_open.c: (bgp_capability_as4) debug printf inline with others.
(peek_for_as4_capability) There's no need to signal failure, as
failure is better dealt with through full capability parser -
just return the AS4, simpler.
* bgp_packet.c: (bgp_open_receive) Update to match
peek_for_as4_capability change.
Allow use of BGP_AS_TRANS by 2b speakers.
Use NOTIFY_OPEN_ERR rather than CEASE for OPEN parsing errors.
(bgp_capability_msg_parse) missing argument to debug print
(bgp_capability_receive) missing return values.
* tests/bgp_capability_test.c: (parse_test) update for changes to
peek_for_as4_capability
2007-07-25 Paul Jakma <paul.jakma@sun.com>
* Remove 2-byte size macros, just make existing macros take
argument to indicate which size to use.
Adjust all users - typically they want '1'.
* bgp_aspath.c: (aspath_has_as4) New, return 1 if there are any
as4's in a path.
(aspath_put) Return the number of bytes actually written, to
fix the bug Juergen noted: Splitting of segments will change
the number of bytes written from that already written to the
AS_PATH header.
(aspath_snmp_pathseg) Pass 2-byte flag to aspath_put. SNMP
is still defined as 2b.
(aspath_aggregate) fix latent bug.
(aspath_reconcile_as4) AS_PATH+NEW_AS_PATH reconciliation
function.
(aspath_key_make) Hash the AS_PATH string, rather than
just taking the addition of assegment ASes as the hash value,
hopefully sligthly more collision resistant.
(bgp_attr_munge_as4_attrs) Collide the NEW_ attributes
together with the OLD 2-byte forms, code Juergen
had in bgp_attr_parse but re-organised a bit.
(bgp_attr_parse) Bunch of code from Juergen moves
to previous function.
(bgp_packet_attribute) Compact significantly by
just /always/ using extended-length attr header.
Fix bug Juergen noted, by using aspath_put's
(new) returned size value for the attr header rather
than the (guesstimate) of aspath_size() - the two could
differ when aspath_put had to split large segments, unlikely
this bug was ever hit in the 'wild'.
(bgp_dump_routes_attr) Always use extended-len and
use aspath_put return for header length. Output 4b ASN
for AS_PATH and AGGREGATOR.
* bgp_ecommunity.c: (ecommunity_{hash_make,cmp}) fix
hash callback declarations to match prototypes.
(ecommunity_gettoken) Updated for ECOMMUNITY_ENCODE_AS4,
complete rewrite of Juergen's changes (no asdot support)
* bgp_open.c: (bgp_capability_as4) New, does what it says
on the tin.
(peek_for_as4_capability) Rewritten to use streams and
bgp_capability_as4.
* bgp_packet.c: (bgp_open_send) minor edit
checked (in the abstract at least) with Juergen.
Changes are to be more accepting, e.g, allow AS_TRANS on
a 2-byte session.
* (general) Update all commands to use CMD_AS_RANGE.
* bgp_vty.c: (bgp_clear) Fix return vals to use CMD_..
Remove stuff replicated by VTY_GET_LONG
(bgp_clear_vty) Return bgp_clear directly to vty.
* tests/aspath_test.c: Exercise 32bit parsing. Test reconcile
function.
* tests/ecommunity_test.c: New, test AS4 ecommunity changes,
positive test only at this time, error cases not tested yet.
2007-07-25 Juergen Kammer <j.kammer@eurodata.de>
* (general) AS4 support.
* bgpd.h: as_t changes to 4-bytes.
* bgp_aspath.h: Add BGP_AS4_MAX and BGP_AS_TRANS defines.
* bgp_aspath.c: AS_VALUE_SIZE becomes 4-byte, AS16_VALUE_SIZE
added for 2-byte.
Add AS16 versions of length calc macros.
(aspath_count_numas) New, count number of ASes.
(aspath_has_as4) New, return 1 if there are any as4's in a
path.
(assegments_parse) Interpret assegment as 4 or 2 byte,
according to how the caller instructs us, with a new
argument.
(aspath_parse) Add use32bit argument to pass to
assegments_parse. Adjust all its callers to pass 1, unless
otherwise noted.
(assegment_data_put) Adjust to be able to write 2 or 4 byte
AS, according to new use32bit argument.
(aspath_put) Adjust to write 2 or 4.
(aspath_gettoken) Use a long for passed in asno.
* bgp_attr.c: (attr_str) Add BGP_ATTR_AS4_PATH and
BGP_ATTR_AS4_AGGREGATOR.
(bgp_attr_aspath) Call aspath_parse with right 2/4 arg, as
determined by received-capability flag.
(bgp_attr_aspath_check) New, code previously in attr_aspath
but moved to new func so it can be run after NEW_AS_PATH
reconciliation.
(bgp_attr_as4_path) New, handle NEW_AS_PATH.
(bgp_attr_aggregator) Adjust to cope with 2/4 byte ASes.
(bgp_attr_as4_aggregator) New, read NEW_AGGREGATOR.
(bgp_attr_parse) Add handoffs to previous parsers for the two
new AS4 NEW_ attributes.
Various checks added for NEW/OLD reconciliation.
(bgp_packet_attribute) Support 2/4 for AS_PATH and
AGGREGATOR, detect when NEW_ attrs need to be sent.
* bgp_debug.{c,h}: Add 'debug bgp as4'.
* bgp_dump.c: MRTv2 support, unconditionally enabled, which
supports AS4. Based on patches from Erik (RIPE?).
* bgp_ecommunity.c: (ecommunity_ecom2str) ECOMMUNITY_ENCODE_AS4
support.
* bgp_open.c: (peek_for_as4_capability) New, peek for AS4
capability prior to full capability parsing, so we know which
ASN to use for struct peer lookup.
(bgp_open_capability) Always send AS4 capability.
* bgp_packet.c: (bgp_open_send) AS4 handling for AS field
(bgp_open_receive) Peek for AS4 capability first, and figure
out which AS to believe.
* bgp_vty.c: (bgp_show_peer) Print AS4 cap
* tests/aspath_test.c: Support asn32 changes, call aspath_parse
with 16 bit.
* vtysh/extract.pl: AS4 compatibility for router bgp ASNUMBER
* vtysh/extract.pl.in: AS4 compatibility for router bgp ASNUMBER
* vtysh/vtysh.c: AS4 compatibility for router bgp ASNUMBER
diff --git a/tests/bgp_capability_test.c b/tests/bgp_capability_test.c
index 020dfb0..6771b57 100644
--- a/tests/bgp_capability_test.c
+++ b/tests/bgp_capability_test.c
@@ -15,8 +15,9 @@
#define VT100_YELLOW "\x1b[33m"
-#define OPEN 0
-#define DYNCAP 1
+#define CAPABILITY 0
+#define DYNCAP 1
+#define OPT_PARAM 2
/* need these to link in libbgp */
struct zebra_privs_t *bgpd_privs = NULL;
@@ -34,7 +35,8 @@
#define SHOULD_PARSE 0
#define SHOULD_ERR -1
int parses; /* whether it should parse or not */
-
+ int peek_for; /* what peek_for_as4_capability should say */
+
/* AFI/SAFI validation */
int validate_afi;
afi_t afi;
@@ -76,54 +78,55 @@
{ "MP4",
"MP IP/Uni",
{ 0x1, 0x4, 0x0, 0x1, 0x0, 0x1 },
- 6, SHOULD_PARSE, AFI_IP, SAFI_UNICAST,
+ 6, SHOULD_PARSE, 0,
+ 1, AFI_IP, SAFI_UNICAST, VALID_AFI,
},
{ "MPv6",
"MP IPv6/Uni",
{ 0x1, 0x4, 0x0, 0x2, 0x0, 0x1 },
- 6, SHOULD_PARSE,
+ 6, SHOULD_PARSE, 0,
1, AFI_IP6, SAFI_UNICAST, VALID_AFI,
},
/* 5 */
{ "MP2",
"MP IP/Multicast",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x2 },
- 6, SHOULD_PARSE,
+ 6, SHOULD_PARSE, 0,
1, AFI_IP, SAFI_MULTICAST, VALID_AFI,
},
/* 6 */
{ "MP3",
"MP IP6/VPNv4",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x2, 0x0, 0x80 },
- 6, SHOULD_PARSE, /* parses, but invalid afi,safi */
+ 6, SHOULD_PARSE, 0, /* parses, but invalid afi,safi */
1, AFI_IP6, BGP_SAFI_VPNV4, INVALID_AFI,
},
/* 7 */
{ "MP5",
"MP IP6/MPLS-VPN",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x2, 0x0, 0x4 },
- 6, SHOULD_PARSE,
+ 6, SHOULD_PARSE, 0,
1, AFI_IP6, SAFI_MPLS_VPN, VALID_AFI,
},
/* 8 */
{ "MP6",
"MP IP4/VPNv4",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x80 },
- 6, SHOULD_PARSE,
+ 6, SHOULD_PARSE, 0,
1, AFI_IP, BGP_SAFI_VPNV4, VALID_AFI,
},
/* 9 */
{ "MP7",
"MP IP4/VPNv6",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x81 },
- 6, SHOULD_PARSE, /* parses, but invalid afi,safi tuple */
+ 6, SHOULD_PARSE, 0, /* parses, but invalid afi,safi tuple */
1, AFI_IP, BGP_SAFI_VPNV6, INVALID_AFI,
},
/* 10 */
{ "MP8",
"MP unknown AFI",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0xa, 0x0, 0x81 },
- 6, SHOULD_PARSE,
+ 6, SHOULD_PARSE, 0,
1, 0xa, 0x81, INVALID_AFI, /* parses, but unknown */
},
/* 11 */
@@ -136,7 +139,7 @@
{ "MP-overflow",
"MP IP4/Unicast, length too long",
{ CAPABILITY_CODE_MP, 0x6, 0x0, 0x1, 0x0, 0x1 },
- 6, SHOULD_ERR,
+ 6, SHOULD_ERR, 0,
1, AFI_IP, SAFI_UNICAST, VALID_AFI,
},
{ NULL, NULL, {0}, 0, 0}
@@ -290,8 +293,8 @@
/* 19 */
{ "AS4",
"AS4 capability",
- { 0x41, 0x4, 0xab, 0xcd, 0xef, 0x12 },
- 6, SHOULD_PARSE,
+ { 0x41, 0x4, 0xab, 0xcd, 0xef, 0x12 }, /* AS: 2882400018 */
+ 6, SHOULD_PARSE, 2882400018,
},
/* 20 */
{ "GR",
@@ -367,7 +370,7 @@
{ NULL, NULL, {0}, 0, 0}
};
-
+/* DYNAMIC message */
struct test_segment dynamic_cap_msgs[] =
{
{ "DynCap",
@@ -397,18 +400,97 @@
},
{ NULL, NULL, {0}, 0, 0}
};
+
+/* Entire Optional-Parameters block */
+struct test_segment opt_params[] =
+{
+ { "Cap-singlets",
+ "One capability per Optional-Param",
+ { 0x02, 0x06, 0x01, 0x04, 0x00, 0x01, 0x00, 0x01, /* MP IPv4/Uni */
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x02, 0x00, 0x01, /* MP IPv6/Uni */
+ 0x02, 0x02, 0x80, 0x00, /* RR (old) */
+ 0x02, 0x02, 0x02, 0x00, /* RR */
+ },
+ 24, SHOULD_PARSE,
+ },
+ { "Cap-series",
+ "Series of capability, one Optional-Param",
+ { 0x02, 0x10,
+ 0x01, 0x04, 0x00, 0x01, 0x00, 0x01, /* MP IPv4/Uni */
+ 0x01, 0x04, 0x00, 0x02, 0x00, 0x01, /* MP IPv6/Uni */
+ 0x80, 0x00, /* RR (old) */
+ 0x02, 0x00, /* RR */
+ },
+ 18, SHOULD_PARSE,
+ },
+ { "AS4more",
+ "AS4 capability after other caps (singlets)",
+ { 0x02, 0x06, 0x01, 0x04, 0x00, 0x01, 0x00, 0x01, /* MP IPv4/Uni */
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x02, 0x00, 0x01, /* MP IPv6/Uni */
+ 0x02, 0x02, 0x80, 0x00, /* RR (old) */
+ 0x02, 0x02, 0x02, 0x00, /* RR */
+ 0x02, 0x06, 0x41, 0x04, 0x00, 0x03, 0x00, 0x06 /* AS4: 1996614 */
+ },
+ 32, SHOULD_PARSE, 196614,
+ },
+ { "AS4series",
+ "AS4 capability, in series of capabilities",
+ { 0x02, 0x16,
+ 0x01, 0x04, 0x00, 0x01, 0x00, 0x01, /* MP IPv4/Uni */
+ 0x01, 0x04, 0x00, 0x02, 0x00, 0x01, /* MP IPv6/Uni */
+ 0x80, 0x00, /* RR (old) */
+ 0x02, 0x00, /* RR */
+ 0x41, 0x04, 0x00, 0x03, 0x00, 0x06 /* AS4: 1996614 */
+ },
+ 24, SHOULD_PARSE, 196614,
+ },
+ { "AS4real",
+ "AS4 capability, in series of capabilities",
+ {
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x01, 0x00, 0x01, /* MP IPv4/uni */
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x02, 0x00, 0x01, /* MP IPv6/uni */
+ 0x02, 0x02, 0x80, 0x00, /* RR old */
+ 0x02, 0x02, 0x02, 0x00, /* RR */
+ 0x02, 0x06, 0x41, 0x04, 0x00, 0x03, 0x00, 0x06, /* AS4 */
+ },
+ 32, SHOULD_PARSE, 196614,
+ },
+ { "AS4real2",
+ "AS4 capability, in series of capabilities",
+ {
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x01, 0x00, 0x01,
+ 0x02, 0x06, 0x01, 0x04, 0x00, 0x02, 0x00, 0x01,
+ 0x02, 0x02, 0x80, 0x00,
+ 0x02, 0x02, 0x02, 0x00,
+ 0x02, 0x06, 0x41, 0x04, 0x00, 0x00, 0xfc, 0x03,
+ 0x02, 0x09, 0x82, 0x07, 0x00, 0x01, 0x00, 0x01, 0x01, 0x80, 0x03,
+ 0x02, 0x09, 0x03, 0x07, 0x00, 0x01, 0x00, 0x01, 0x01, 0x40, 0x03,
+ 0x02, 0x02, 0x42, 0x00,
+ },
+ 58, SHOULD_PARSE, 64515,
+ },
+
+ { NULL, NULL, {0}, 0, 0}
+};
+
/* basic parsing test */
static void
parse_test (struct peer *peer, struct test_segment *t, int type)
{
int ret;
int capability = 0;
+ as_t as4 = 0;
int oldfailed = failed;
+ int len = t->len;
+#define RANDOM_FUZZ 35
stream_reset (peer->ibuf);
+ stream_put (peer->ibuf, NULL, RANDOM_FUZZ);
+ stream_set_getp (peer->ibuf, RANDOM_FUZZ);
+
switch (type)
{
- case OPEN:
+ case CAPABILITY:
stream_putc (peer->ibuf, BGP_OPEN_OPT_CAP);
stream_putc (peer->ibuf, t->len);
break;
@@ -422,11 +504,20 @@
stream_write (peer->ibuf, t->data, t->len);
printf ("%s: %s\n", t->name, t->desc);
-
+
switch (type)
{
- case OPEN:
- ret = bgp_open_option_parse (peer, t->len + 2, &capability);
+ case CAPABILITY:
+ len += 2; /* to cover the OPT-Param header */
+ case OPT_PARAM:
+ printf ("len: %u\n", len);
+ /* peek_for_as4 wants getp at capibility*/
+ as4 = peek_for_as4_capability (peer, len);
+ printf ("peek_for_as4: as4 is %u\n", as4);
+ /* and it should leave getp as it found it */
+ assert (stream_get_getp (peer->ibuf) == RANDOM_FUZZ);
+
+ ret = bgp_open_option_parse (peer, len, &capability);
break;
case DYNCAP:
ret = bgp_capability_receive (peer, t->len);
@@ -458,18 +549,27 @@
}
}
+ if (as4 != t->peek_for)
+ {
+ printf ("as4 %u != %u\n", as4, t->peek_for);
+ failed++;
+ }
+
printf ("parsed?: %s\n", ret ? "no" : "yes");
if (ret != t->parses)
failed++;
if (tty)
- printf ("%s\n", (failed > oldfailed) ? VT100_RED "failed!" VT100_RESET
+ printf ("%s", (failed > oldfailed) ? VT100_RED "failed!" VT100_RESET
: VT100_GREEN "OK" VT100_RESET);
else
- printf ("%s\n", (failed > oldfailed) ? "failed!" : "OK" );
+ printf ("%s", (failed > oldfailed) ? "failed!" : "OK" );
- printf ("\n");
+ if (failed)
+ printf (" (%u)", failed);
+
+ printf ("\n\n");
}
static struct bgp *bgp;
@@ -485,10 +585,12 @@
conf_bgp_debug_events = -1UL;
conf_bgp_debug_packet = -1UL;
conf_bgp_debug_normal = -1UL;
+ conf_bgp_debug_as4 = -1UL;
term_bgp_debug_fsm = -1UL;
term_bgp_debug_events = -1UL;
term_bgp_debug_packet = -1UL;
term_bgp_debug_normal = -1UL;
+ term_bgp_debug_as4 = -1UL;
master = thread_master_create ();
bgp_master_init ();
@@ -500,6 +602,7 @@
return -1;
peer = peer_create_accept (bgp);
+ peer->host = "foo";
for (i = AFI_IP; i < AFI_MAX; i++)
for (j = SAFI_UNICAST; j < SAFI_MAX; j++)
@@ -510,18 +613,22 @@
i = 0;
while (mp_segments[i].name)
- parse_test (peer, &mp_segments[i++], OPEN);
+ parse_test (peer, &mp_segments[i++], CAPABILITY);
/* These tests assume mp_segments tests set at least
* one of the afc_nego's
*/
i = 0;
while (test_segments[i].name)
- parse_test (peer, &test_segments[i++], OPEN);
+ parse_test (peer, &test_segments[i++], CAPABILITY);
i = 0;
while (misc_segments[i].name)
- parse_test (peer, &misc_segments[i++], OPEN);
+ parse_test (peer, &misc_segments[i++], CAPABILITY);
+
+ i = 0;
+ while (opt_params[i].name)
+ parse_test (peer, &opt_params[i++], OPT_PARAM);
SET_FLAG (peer->cap, PEER_CAP_DYNAMIC_ADV);
peer->status = Established;