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https://gitlab.nic.cz/labs/bird.git
synced 2024-11-17 08:38:42 +00:00
Created nest/a-path.c and a-set.c which should contain general operations
on AS paths and community sets. Moved as_path_prepend() there. Pavel, please move the other functions as well.
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parent
ebff007f08
commit
c0668f3696
@ -1,4 +1,5 @@
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source=rt-table.c rt-fib.c rt-attr.c proto.c iface.c rt-dev.c password.c cli.c locks.c cmds.c neighbor.c
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source=rt-table.c rt-fib.c rt-attr.c proto.c iface.c rt-dev.c password.c cli.c locks.c cmds.c neighbor.c \
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a-path.c a-set.c
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root-rel=../
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dir-name=nest
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38
nest/a-path.c
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38
nest/a-path.c
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@ -0,0 +1,38 @@
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/*
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* BIRD -- Path Operations
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*
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* (c) 2000 Martin Mares <mj@ucw.cz>
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* (c) 2000 Pavel Machek <pavel@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "nest/bird.h"
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#include "nest/route.h"
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#include "lib/resource.h"
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#include "lib/unaligned.h"
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struct adata *
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as_path_prepend(struct linpool *pool, struct adata *olda, int as)
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{
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struct adata *newa;
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if (olda->length && olda->data[0] == 2 && olda->data[1] < 255) /* Starting with sequence => just prepend the AS number */
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{
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newa = lp_alloc(pool, sizeof(struct adata) + olda->length + 2);
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newa->length = olda->length + 2;
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newa->data[0] = 2;
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newa->data[1] = olda->data[1] + 1;
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memcpy(newa->data+4, olda->data+2, olda->length-2);
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}
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else /* Create new path segment */
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{
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newa = lp_alloc(pool, sizeof(struct adata) + olda->length + 4);
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newa->length = olda->length + 4;
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newa->data[0] = 2;
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newa->data[1] = 1;
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memcpy(newa->data+4, olda->data, olda->length);
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}
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put_u16(newa->data+2, as);
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return newa;
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}
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12
nest/a-set.c
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12
nest/a-set.c
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@ -0,0 +1,12 @@
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/*
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* BIRD -- Set/Community-list Operations
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*
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* (c) 2000 Martin Mares <mj@ucw.cz>
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* (c) 2000 Pavel Machek <pavel@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "nest/bird.h"
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#include "nest/route.h"
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#include "lib/resource.h"
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16
nest/attrs.h
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16
nest/attrs.h
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@ -0,0 +1,16 @@
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/*
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* BIRD Internet Routing Daemon -- Attribute Operations
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*
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* (c) 2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_ATTRS_H_
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#define _BIRD_ATTRS_H_
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/* a-path.c */
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struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, int as);
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#endif
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@ -12,6 +12,7 @@
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#include "nest/iface.h"
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#include "nest/protocol.h"
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#include "nest/route.h"
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#include "nest/attrs.h"
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#include "conf/conf.h"
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#include "lib/resource.h"
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#include "lib/string.h"
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@ -278,31 +279,6 @@ bgp_create_attrs(struct bgp_proto *p, rte *e, ea_list **attrs, struct linpool *p
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return 0; /* Leave decision to the filters */
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}
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struct adata *
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as_path_prepend(struct linpool *pool, struct adata *olda, int as)
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{
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struct adata *newa;
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if (olda->length && olda->data[0] == 2 && olda->data[1] < 255) /* Starting with sequence => just prepend the AS number */
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{
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newa = lp_alloc(pool, sizeof(struct adata) + olda->length + 2);
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newa->length = olda->length + 2;
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newa->data[0] = 2;
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newa->data[1] = olda->data[1] + 1;
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memcpy(newa->data+4, olda->data+2, olda->length-2);
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}
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else /* Create new path segment */
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{
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newa = lp_alloc(pool, sizeof(struct adata) + olda->length + 4);
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newa->length = olda->length + 4;
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newa->data[0] = 2;
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newa->data[1] = 1;
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memcpy(newa->data+4, olda->data, olda->length);
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}
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put_u16(newa->data+2, as);
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return newa;
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}
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static ea_list *
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bgp_path_prepend(struct linpool *pool, eattr *a, ea_list *old, int as)
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{
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@ -96,7 +96,6 @@ int bgp_get_attr(struct eattr *e, byte *buf);
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int bgp_rte_better(struct rte *, struct rte *);
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void bgp_rt_notify(struct proto *, struct network *, struct rte *, struct rte *, struct ea_list *);
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int bgp_import_control(struct proto *, struct rte **, struct ea_list **, struct linpool *);
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struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, int as);
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void bgp_attr_init(struct bgp_proto *);
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/* packets.c */
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