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Merge commit 'e2f08c38'

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This commit is contained in:
Maria Matejka 2023-10-12 11:39:56 +02:00
commit 88fb91a556
4 changed files with 39 additions and 51 deletions
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19
proto/bgp/attrs.c
View File

@ -1158,14 +1158,6 @@ bgp_attr_name(uint code)
return (code < ARRAY_SIZE(bgp_attr_table)) ? bgp_attr_table[code].name : NULL;
}
void bgp_fix_attr_flags(ea_list *attrs)
{
for (u8 i = 0; i < attrs->count; i++)
{
attrs->attrs[i].flags = bgp_attr_table[EA_ID(attrs->attrs[i].id)].flags;
}
}
/*
* Attribute export
*/
@ -1645,6 +1637,9 @@ bgp_defer_bucket(struct bgp_channel *c, struct bgp_bucket *b)
void
bgp_withdraw_bucket(struct bgp_channel *c, struct bgp_bucket *b)
{
if (b->bmp)
return;
struct bgp_proto *p = (void *) c->c.proto;
struct bgp_bucket *wb = bgp_get_withdraw_bucket(c);
@ -1724,6 +1719,14 @@ bgp_get_prefix(struct bgp_channel *c, net_addr *net, u32 path_id)
void
bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
{
/* BMP hack */
if (
!NODE_VALID(px->buck_node.prev) &&
!NODE_VALID(px->buck_node.next) &&
!SKIP_BACK(struct bgp_bucket, prefixes.head, px->buck_node.prev)->bmp
)
return;
rem_node(&px->buck_node);
HASH_REMOVE2(c->prefix_hash, PXH, c->pool, px);

7
proto/bgp/bgp.c
View File

@ -125,7 +125,9 @@
#include "lib/string.h"
#include "bgp.h"
#ifdef CONFIG_BMP
#include "proto/bmp/bmp.h"
#endif
static list STATIC_LIST_INIT(bgp_sockets); /* Global list of listening sockets */
@ -694,8 +696,11 @@ bgp_conn_enter_established_state(struct bgp_conn *conn)
bgp_conn_set_state(conn, BS_ESTABLISHED);
proto_notify_state(&p->p, PS_UP);
#ifdef CONFIG_BMP
bmp_peer_up(p, conn->local_open_msg, conn->local_open_length,
conn->remote_open_msg, conn->remote_open_length);
#endif
}
static void
@ -708,9 +713,11 @@ bgp_conn_leave_established_state(struct bgp_conn *conn, struct bgp_proto *p)
if (p->p.proto_state == PS_UP)
bgp_stop(p, 0, NULL, 0);
#ifdef CONFIG_BMP
bmp_peer_down(p, p->last_error_class,
conn->notify_code, conn->notify_subcode,
conn->notify_data, conn->notify_size);
#endif
}
void

4
proto/bgp/bgp.h
View File

@ -414,6 +414,7 @@ struct bgp_bucket {
struct bgp_bucket *next; /* Node in bucket hash table */
list prefixes; /* Prefixes in this bucket (struct bgp_prefix) */
u32 hash; /* Hash over extended attributes */
u32 bmp:1; /* Temporary bucket for BMP encoding */
ea_list eattrs[0]; /* Per-bucket extended attributes */
};
@ -440,7 +441,6 @@ struct bgp_write_state {
int as4_session;
int add_path;
int mpls;
int sham;
eattr *mp_next_hop;
const adata *mpls_labels;
@ -557,8 +557,6 @@ void bgp_store_error(struct bgp_proto *p, struct bgp_conn *c, u8 class, u32 code
void bgp_stop(struct bgp_proto *p, int subcode, byte *data, uint len);
const char *bgp_format_role_name(u8 role);
void bgp_fix_attr_flags(ea_list *attrs);
static inline int
rte_resolvable(rte *rt)
{

60
proto/bgp/packets.c
View File

@ -26,7 +26,9 @@
#include "nest/cli.h"
#include "bgp.h"
#ifdef CONFIG_BMP
#include "proto/bmp/bmp.h"
#endif
#define BGP_RR_REQUEST 0
@ -1578,10 +1580,7 @@ bgp_encode_nlri_ip4(struct bgp_write_state *s, struct bgp_bucket *buck, byte *bu
memcpy(pos, &a, b);
ADVANCE(pos, size, b);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -1666,10 +1665,7 @@ bgp_encode_nlri_ip6(struct bgp_write_state *s, struct bgp_bucket *buck, byte *bu
memcpy(pos, &a, b);
ADVANCE(pos, size, b);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -1757,10 +1753,7 @@ bgp_encode_nlri_vpn4(struct bgp_write_state *s, struct bgp_bucket *buck, byte *b
memcpy(pos, &a, b);
ADVANCE(pos, size, b);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -1857,10 +1850,7 @@ bgp_encode_nlri_vpn6(struct bgp_write_state *s, struct bgp_bucket *buck, byte *b
memcpy(pos, &a, b);
ADVANCE(pos, size, b);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -1947,10 +1937,7 @@ bgp_encode_nlri_flow4(struct bgp_write_state *s, struct bgp_bucket *buck, byte *
memcpy(pos, net->data, flen);
ADVANCE(pos, size, flen);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -2042,10 +2029,7 @@ bgp_encode_nlri_flow6(struct bgp_write_state *s, struct bgp_bucket *buck, byte *
memcpy(pos, net->data, flen);
ADVANCE(pos, size, flen);
if (!s->sham)
bgp_free_prefix(s->channel, px);
else
rem_node(&px->buck_node);
bgp_free_prefix(s->channel, px);
}
return pos - buf;
@ -2289,8 +2273,7 @@ bgp_create_ip_reach(struct bgp_write_state *s, struct bgp_bucket *buck, byte *bu
if (la < 0)
{
/* Attribute list too long */
if (!s->sham)
bgp_withdraw_bucket(s->channel, buck);
bgp_withdraw_bucket(s->channel, buck);
return NULL;
}
@ -2337,8 +2320,7 @@ bgp_create_mp_reach(struct bgp_write_state *s, struct bgp_bucket *buck, byte *bu
if (la < 0)
{
/* Attribute list too long */
if (!s->sham)
bgp_withdraw_bucket(s->channel, buck);
bgp_withdraw_bucket(s->channel, buck);
return NULL;
}
@ -2430,9 +2412,6 @@ bgp_create_update_bmp(struct bgp_channel *c, byte *buf, struct bgp_bucket *buck,
byte *res = NULL;
/* FIXME: must be a bit shorter */
struct lp_state tmpp;
lp_save(tmp_linpool, &tmpp);
struct bgp_caps *peer = p->conn->remote_caps;
const struct bgp_af_caps *rem = bgp_find_af_caps(peer, c->afi);
@ -2444,7 +2423,6 @@ bgp_create_update_bmp(struct bgp_channel *c, byte *buf, struct bgp_bucket *buck,
.as4_session = 1,
.add_path = c->add_path_rx,
.mpls = c->desc->mpls,
.sham = 1,
};
if (!update)
@ -2460,8 +2438,6 @@ bgp_create_update_bmp(struct bgp_channel *c, byte *buf, struct bgp_bucket *buck,
bgp_create_mp_reach(&s, buck, buf, end);
}
lp_restore(tmp_linpool, &tmpp);
return res;
}
@ -2487,17 +2463,19 @@ bgp_bmp_encode_rte(struct bgp_channel *c, byte *buf, const net_addr *n,
uint bucket_size = sizeof(struct bgp_bucket) + ea_size;
uint prefix_size = sizeof(struct bgp_prefix) + n->length;
/* Sham bucket */
struct bgp_bucket *b = alloca(bucket_size);
*b = (struct bgp_bucket) { };
struct lp_state tmpp;
lp_save(tmp_linpool, &tmpp);
/* Temporary bucket */
struct bgp_bucket *b = tmp_allocz(bucket_size);
b->bmp = 1;
init_list(&b->prefixes);
if (attrs)
memcpy(b->eattrs, attrs, ea_size);
/* Sham prefix */
struct bgp_prefix *px = alloca(prefix_size);
*px = (struct bgp_prefix) { };
/* Temporary prefix */
struct bgp_prefix *px = tmp_allocz(prefix_size);
px->path_id = (u32) src->private_id;
net_copy(px->net, n);
add_tail(&b->prefixes, &px->buck_node);
@ -2507,6 +2485,8 @@ bgp_bmp_encode_rte(struct bgp_channel *c, byte *buf, const net_addr *n,
if (end)
bgp_bmp_prepare_bgp_hdr(buf, end - buf, PKT_UPDATE);
lp_restore(tmp_linpool, &tmpp);
return end;
}