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Diffstat (limited to 'lib/pbr.h')
| -rw-r--r-- | lib/pbr.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/pbr.h b/lib/pbr.h new file mode 100644 index 0000000000..b49cb562a1 --- /dev/null +++ b/lib/pbr.h @@ -0,0 +1,86 @@ +/* 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 */ |