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bgpd: support for policy-routing context used with flowspec

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BGP flowspec will be able to inject or remove policy-routing contexts,
thanks to some protocols like flowspec. This commit adds some the APIS
necessary to create/delete policy routing contexts that will be injected
then into zebra.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
Philippe Guibert 2018-03-08 15:37:06 +01:00
parent 397123370b
commit bbe6ffd61f
3 changed files with 127 additions and 2 deletions
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4
bgpd/Makefile.am
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@ -87,7 +87,7 @@ libbgp_a_SOURCES = \
bgp_encap_tlv.c $(BGP_VNC_RFAPI_SRC) bgp_attr_evpn.c \
bgp_evpn.c bgp_evpn_vty.c bgp_vpn.c bgp_label.c bgp_rd.c \
bgp_keepalives.c bgp_io.c bgp_flowspec.c bgp_flowspec_util.c \
bgp_flowspec_vty.c bgp_labelpool.c
bgp_flowspec_vty.c bgp_labelpool.c bgp_pbr.c
noinst_HEADERS = \
bgp_memory.h \
@ -101,7 +101,7 @@ noinst_HEADERS = \
$(BGP_VNC_RFAPI_HD) bgp_attr_evpn.h bgp_evpn.h bgp_evpn_vty.h \
bgp_vpn.h bgp_label.h bgp_rd.h bgp_evpn_private.h bgp_keepalives.h \
bgp_io.h bgp_flowspec.h bgp_flowspec_private.h bgp_flowspec_util.h \
bgp_labelpool.h
bgp_labelpool.h bgp_pbr.h
bgpd_SOURCES = bgp_main.c
bgpd_LDADD = libbgp.a $(BGP_VNC_RFP_LIB) ../lib/libfrr.la @LIBCAP@ @LIBM@

44
bgpd/bgp_pbr.c Normal file
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@ -0,0 +1,44 @@
/*
* BGP pbr
* Copyright (C) 6WIND
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "zebra.h"
#include "prefix.h"
#include "zclient.h"
#include "bgpd/bgp_pbr.h"
struct bgp_pbr_action *bgp_pbr_action_rule_lookup(uint32_t unique)
{
return NULL;
}
struct bgp_pbr_match *bgp_pbr_match_ipset_lookup(vrf_id_t vrf_id,
uint32_t unique)
{
return NULL;
}
struct bgp_pbr_match_entry *bgp_pbr_match_ipset_entry_lookup(vrf_id_t vrf_id,
char *ipset_name,
uint32_t unique)
{
return NULL;
}

81
bgpd/bgp_pbr.h Normal file
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@ -0,0 +1,81 @@
/*
* BGP pbr
* Copyright (C) 6WIND
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __BGP_PBR_H__
#define __BGP_PBR_H__
#include "nexthop.h"
#include "zclient.h"
struct bgp_pbr_match {
char ipset_name[ZEBRA_IPSET_NAME_SIZE];
/* mapped on enum ipset_type
*/
uint32_t type;
uint32_t unique;
bool installed;
};
struct bgp_pbr_match_entry {
struct bgp_pbr_match *backpointer;
uint32_t unique;
struct prefix src;
struct prefix dst;
bool installed;
bool install_in_progress;
};
struct bgp_pbr_action {
/*
* The Unique identifier of this specific pbrms
*/
uint32_t unique;
uint32_t fwmark;
uint32_t table_id;
/*
* nexthop information, or drop information
* contains src vrf_id and nh contains dest vrf_id
*/
vrf_id_t vrf_id;
struct nexthop nh;
bool installed;
bool install_in_progress;
struct bgp_pbr_match *match;
};
extern struct bgp_pbr_action *bgp_pbr_action_rule_lookup(uint32_t unique);
extern struct bgp_pbr_match *bgp_pbr_match_ipset_lookup(vrf_id_t vrf_id,
uint32_t unique);
extern struct bgp_pbr_match_entry *bgp_pbr_match_ipset_entry_lookup(
vrf_id_t vrf_id, char *name,
uint32_t unique);
#endif /* __BGP_PBR_H__ */