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/* Policy Based Routing (PBR) main header
* Copyright (C) 2018 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 FRR; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _PBR_H
#define _PBR_H
/*
* A PBR filter
*
* The filter or match criteria in a PBR rule.
* For simplicity, all supported filters are grouped into a structure rather
* than delineating further. A bitmask denotes which filters are actually
* specified.
*/
struct pbr_filter {
uint32_t filter_bm; /* not encoded by zapi
*/
#define PBR_FILTER_SRC_IP (1 << 0)
#define PBR_FILTER_DST_IP (1 << 1)
#define PBR_FILTER_SRC_PORT (1 << 2)
#define PBR_FILTER_DST_PORT (1 << 3)
#define PBR_FILTER_FWMARK (1 << 4)
/* Source and Destination IP address with masks. */
struct prefix src_ip;
struct prefix dst_ip;
/* Source and Destination higher-layer (TCP/UDP) port numbers. */
uint16_t src_port;
uint16_t dst_port;
/* Filter with fwmark */
uint32_t fwmark;
};
/*
* A PBR action
*
* The action corresponding to a PBR rule.
* While the user specifies the action in a particular way, the forwarding
* plane implementation (Linux only) requires that to be encoded into a
* route table and the rule then point to that route table; in some cases,
* the user criteria may directly point to a table too.
*/
struct pbr_action {
uint32_t table;
};
/*
* A PBR rule
*
* This is a combination of the filter criteria and corresponding action.
* Rules also have a user-defined sequence number which defines the relative
* order amongst rules.
*/
struct pbr_rule {
vrf_id_t vrf_id;
uint32_t seq;
uint32_t priority;
uint32_t unique;
struct pbr_filter filter;
struct pbr_action action;
uint32_t ifindex;
};
extern int zapi_pbr_rule_encode(uint8_t cmd, struct stream *s,
struct pbr_rule *zrule);
#endif /* _PBR_H */
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