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authorNick Hibma <n_hibma@FreeBSD.org>2020-12-08 15:09:42 +0000
committerNick Hibma <n_hibma@FreeBSD.org>2020-12-08 15:09:42 +0000
commite8db04c38959c882fe17e7c2b26fbabe74f26311 (patch)
treeba192d38b7931b1c488b120a909f6500feff40b5 /sys/netgraph/ng_macfilter.h
parentb7b5d7d7f5bad47e2a07d86d3f97d8c9cd7c9604 (diff)
downloadsrc-e8db04c38959c882fe17e7c2b26fbabe74f26311.tar.gz
src-e8db04c38959c882fe17e7c2b26fbabe74f26311.zip
New Netgraph module ng_macfilter:
Macfilter to route packets through different hooks based on sender MAC address. Based on ng_macfilter written by Pekka Nikander Sponsered by Retina b.v. Reviewed by: afedorov MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D27268
Notes
Notes: svn path=/head/; revision=368443
Diffstat (limited to 'sys/netgraph/ng_macfilter.h')
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1 files changed, 132 insertions, 0 deletions
diff --git a/sys/netgraph/ng_macfilter.h b/sys/netgraph/ng_macfilter.h
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+/*
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2002 Ericsson Research & Pekka Nikander
+ * Copyright (c) 2020 Nick Hibma <n_hibma@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice unmodified, this list of conditions, and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _NETGRAPH_MACFILTER_H_
+#define _NETGRAPH_MACFILTER_H_
+
+#define NG_MACFILTER_NODE_TYPE "macfilter"
+#define NGM_MACFILTER_COOKIE 1042445461
+
+/* Hook names */
+#define NG_MACFILTER_HOOK_ETHER "ether" /* connected to ether:lower */
+#define NG_MACFILTER_HOOK_DEFAULT "default" /* connected to ether:upper; upper[0] */
+/* Other hooks may be named freely connected to ether:upper; upper[1..n]*/
+#define NG_MACFILTER_HOOK_DEFAULT_ID 0
+
+#define OFFSETOF(s, e) ((char *)&((s *)0)->e - (char *)((s *)0))
+
+/* Netgraph commands understood/sent by this node type */
+enum {
+ NGM_MACFILTER_RESET = 1,
+ NGM_MACFILTER_DIRECT = 2,
+ NGM_MACFILTER_DIRECT_HOOKID = 3,
+ NGM_MACFILTER_GET_MACS = 4,
+ NGM_MACFILTER_GETCLR_MACS = 5,
+ NGM_MACFILTER_CLR_MACS = 6,
+ NGM_MACFILTER_GET_HOOKS = 7
+};
+
+/* This structure is supplied with the NGM_MACFILTER_DIRECT command */
+struct ngm_macfilter_direct {
+ u_char ether[ETHER_ADDR_LEN]; /* MAC address */
+ u_char hookname[NG_HOOKSIZ]; /* Upper hook name*/
+};
+#define NGM_MACFILTER_DIRECT_FIELDS { \
+ { "ether", &ng_parse_enaddr_type }, \
+ { "hookname", &ng_parse_hookbuf_type }, \
+ { NULL } \
+}
+
+/* This structure is supplied with the NGM_MACFILTER_DIRECT_HOOKID command */
+struct ngm_macfilter_direct_hookid {
+ u_char ether[ETHER_ADDR_LEN]; /* MAC address */
+ u_int16_t hookid; /* Upper hook hookid */
+};
+#define NGM_MACFILTER_DIRECT_NDX_FIELDS { \
+ { "ether", &ng_parse_enaddr_type }, \
+ { "hookid", &ng_parse_uint16_type }, \
+ { NULL } \
+}
+
+/* This structure is returned in the array by the NGM_MACFILTER_GET(CLR)_MACS commands */
+struct ngm_macfilter_mac {
+ u_char ether[ETHER_ADDR_LEN]; /* MAC address */
+ u_int16_t hookid; /* Upper hook hookid */
+ u_int64_t packets_in; /* packets in from downstream */
+ u_int64_t bytes_in; /* bytes in from upstream */
+ u_int64_t packets_out; /* packets out towards downstream */
+ u_int64_t bytes_out; /* bytes out towards downstream */
+};
+#define NGM_MACFILTER_MAC_FIELDS { \
+ { "ether", &ng_parse_enaddr_type }, \
+ { "hookid", &ng_parse_uint16_type }, \
+ { "packets_in", &ng_parse_uint64_type }, \
+ { "bytes_in", &ng_parse_uint64_type }, \
+ { "packets_out", &ng_parse_uint64_type }, \
+ { "bytes_out", &ng_parse_uint64_type }, \
+ { NULL } \
+}
+/* This structure is returned by the NGM_MACFILTER_GET(CLR)_MACS commands */
+struct ngm_macfilter_macs {
+ u_int32_t n; /* Number of entries in macs */
+ struct ngm_macfilter_mac macs[]; /* Macs table */
+};
+#define NGM_MACFILTER_MACS_FIELDS { \
+ { "n", &ng_parse_uint32_type }, \
+ { "macs", &ng_macfilter_macs_array_type },\
+ { NULL } \
+}
+
+/* This structure is returned in an array by the NGM_MACFILTER_GET_HOOKS command */
+struct ngm_macfilter_hook {
+ u_char hookname[NG_HOOKSIZ]; /* Upper hook name*/
+ u_int16_t hookid; /* Upper hook hookid */
+ u_int32_t maccnt; /* Number of mac addresses associated with hook */
+};
+#define NGM_MACFILTER_HOOK_FIELDS { \
+ { "hookname", &ng_parse_hookbuf_type }, \
+ { "hookid", &ng_parse_uint16_type }, \
+ { "maccnt", &ng_parse_uint32_type }, \
+ { NULL } \
+}
+/* This structure is returned by the NGM_MACFILTER_GET_HOOKS command */
+struct ngm_macfilter_hooks {
+ u_int32_t n; /* Number of entries in hooks */
+ struct ngm_macfilter_hook hooks[]; /* Hooks table */
+};
+#define NGM_MACFILTER_HOOKS_FIELDS { \
+ { "n", &ng_parse_uint32_type }, \
+ { "hooks", &ng_macfilter_hooks_array_type },\
+ { NULL } \
+}
+
+#endif /* _NETGRAPH_MACFILTER_H_ */