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route/act: merge branch 'westermo/act-vlan'

Browse Source 
https://github.com/thom311/libnl/pull/198
This commit is contained in:
Thomas Haller 2018-10-10 11:40:42 +02:00
commit d1b5f55b31
6 changed files with 526 additions and 0 deletions
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3
Makefile.am
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@ -121,6 +121,7 @@ libnlinclude_netlink_route_act_HEADERS = \
include/netlink/route/act/gact.h \
include/netlink/route/act/mirred.h \
include/netlink/route/act/skbedit.h \
include/netlink/route/act/vlan.h \
$(NULL)
libnlinclude_netlink_route_clsdir = $(libnlincludedir)/netlink/route/cls
libnlinclude_netlink_route_cls_HEADERS = \
@ -252,6 +253,7 @@ noinst_HEADERS = \
include/linux-private/linux/tc_act/tc_gact.h \
include/linux-private/linux/tc_act/tc_mirred.h \
include/linux-private/linux/tc_act/tc_skbedit.h \
include/linux-private/linux/tc_act/tc_vlan.h \
include/linux-private/linux/tc_ematch/tc_em_meta.h \
include/linux-private/linux/veth.h \
include/linux-private/linux/xfrm.h \
@ -369,6 +371,7 @@ lib_libnl_route_3_la_SOURCES = \
lib/route/act/gact.c \
lib/route/act/mirred.c \
lib/route/act/skbedit.c \
lib/route/act/vlan.c \
lib/route/addr.c \
lib/route/class.c \
lib/route/classid.c \

39
include/linux-private/linux/tc_act/tc_vlan.h Normal file
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@ -0,0 +1,39 @@
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
*
* This program 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 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_TC_VLAN_H
#define __LINUX_TC_VLAN_H
#include <linux/pkt_cls.h>
#define TCA_ACT_VLAN 12
#define TCA_VLAN_ACT_POP 1
#define TCA_VLAN_ACT_PUSH 2
#define TCA_VLAN_ACT_MODIFY 3
struct tc_vlan {
tc_gen;
int v_action;
};
enum {
TCA_VLAN_UNSPEC,
TCA_VLAN_TM,
TCA_VLAN_PARMS,
TCA_VLAN_PUSH_VLAN_ID,
TCA_VLAN_PUSH_VLAN_PROTOCOL,
TCA_VLAN_PAD,
TCA_VLAN_PUSH_VLAN_PRIORITY,
__TCA_VLAN_MAX,
};
#define TCA_VLAN_MAX (__TCA_VLAN_MAX - 1)
#endif

10
include/netlink-private/types.h
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@ -30,6 +30,7 @@
#include <linux/tc_act/tc_mirred.h>
#include <linux/tc_act/tc_skbedit.h>
#include <linux/tc_act/tc_gact.h>
#include <linux/tc_act/tc_vlan.h>
#include <linux/sock_diag.h>
#include <linux/fib_rules.h>
@ -1327,4 +1328,13 @@ struct xfrmnl_sp {
struct xfrmnl_mark mark;
};
struct rtnl_vlan
{
struct tc_vlan v_parm;
uint16_t v_vid;
uint16_t v_proto;
uint8_t v_prio;
uint32_t v_flags;
};
#endif

38
include/netlink/route/act/vlan.h Normal file
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@ -0,0 +1,38 @@
/*
* netlink/route/act/vlan.h vlan action
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2018 Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com>
*/
#ifndef NETLINK_VLAN_H_
#define NETLINK_VLAN_H_
#include <netlink/netlink.h>
#include <netlink/cache.h>
#include <netlink/route/action.h>
#ifdef __cplusplus
extern "C" {
#endif
extern int rtnl_vlan_set_mode(struct rtnl_act *act, int mode);
extern int rtnl_vlan_get_mode(struct rtnl_act *act, int *out_mode);
extern int rtnl_vlan_set_action(struct rtnl_act *act, int action);
extern int rtnl_vlan_get_action(struct rtnl_act *act, int *out_action);
extern int rtnl_vlan_set_protocol(struct rtnl_act *act, uint16_t protocol);
extern int rtnl_vlan_get_protocol(struct rtnl_act *act, uint16_t *out_protocol);
extern int rtnl_vlan_set_vlan_id(struct rtnl_act *act, uint16_t vid);
extern int rtnl_vlan_get_vlan_id(struct rtnl_act *act, uint16_t *out_vid);
extern int rtnl_vlan_set_vlan_prio(struct rtnl_act *act, uint8_t prio);
extern int rtnl_vlan_get_vlan_prio(struct rtnl_act *act, uint8_t *out_prio);
#ifdef __cplusplus
}
#endif
#endif /* NETLINK_VLAN_H_ */

426
lib/route/act/vlan.c Normal file
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@ -0,0 +1,426 @@
/*
* lib/route/act/vlan.c vlan action
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2018 Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com>
*/
/**
* @ingroup act
* @defgroup act_vlan VLAN Manipulation
*
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink-private/tc.h>
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink-private/route/tc-api.h>
#include <netlink/route/act/vlan.h>
#define VLAN_F_VID (1 << 0)
#define VLAN_F_PROTO (1 << 1)
#define VLAN_F_PRIO (1 << 2)
#define VLAN_F_ACT (1 << 3)
#define VLAN_F_MODE (1 << 4)
static struct nla_policy vlan_policy[TCA_VLAN_MAX + 1] = {
[TCA_VLAN_PARMS] = { .minlen = sizeof(struct tc_vlan) },
[TCA_VLAN_PUSH_VLAN_ID] = { .type = NLA_U16 },
[TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NLA_U16 },
[TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NLA_U8 },
};
static int vlan_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_vlan *v = data;
struct nlattr *tb[TCA_VLAN_MAX + 1];
int err;
err = tca_parse(tb, TCA_VLAN_MAX, tc, vlan_policy);
if (err < 0)
return err;
v->v_flags = 0;
if (!tb[TCA_VLAN_PARMS])
return -NLE_MISSING_ATTR;
else {
nla_memcpy(&v->v_parm, tb[TCA_VLAN_PARMS], sizeof(v->v_parm));
v->v_flags |= VLAN_F_ACT;
v->v_flags |= VLAN_F_MODE;
}
if (tb[TCA_VLAN_PUSH_VLAN_ID]) {
v->v_vid = nla_get_u16(tb[TCA_VLAN_PUSH_VLAN_ID]);
v->v_flags |= VLAN_F_VID;
}
if (tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]) {
v->v_proto = nla_get_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]);
v->v_flags |= VLAN_F_PROTO;
}
if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) {
v->v_prio = nla_get_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);
v->v_flags |= VLAN_F_PRIO;
}
return 0;
}
static int vlan_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
{
struct rtnl_vlan *v = data;
if (!v)
return 0;
if (!(v->v_flags & VLAN_F_MODE))
return -NLE_MISSING_ATTR;
NLA_PUT(msg, TCA_VLAN_PARMS, sizeof(v->v_parm), &v->v_parm);
/* vid is required for PUSH & MODIFY modes */
if ((v->v_parm.v_action != TCA_VLAN_ACT_POP) && !(v->v_flags & VLAN_F_VID))
return -NLE_MISSING_ATTR;
if (v->v_flags & VLAN_F_VID)
NLA_PUT_U16(msg, TCA_VLAN_PUSH_VLAN_ID, v->v_vid);
if (v->v_flags & VLAN_F_PROTO)
NLA_PUT_U16(msg, TCA_VLAN_PUSH_VLAN_PROTOCOL, v->v_proto);
if (v->v_flags & VLAN_F_PRIO)
NLA_PUT_U8(msg, TCA_VLAN_PUSH_VLAN_PRIORITY, v->v_prio);
return 0;
nla_put_failure:
return -NLE_NOMEM;
}
static void vlan_free_data(struct rtnl_tc *tc, void *data)
{
}
static int vlan_clone(void *_dst, void *_src)
{
struct rtnl_vlan *dst = _dst, *src = _src;
memcpy(&dst->v_parm, &src->v_parm, sizeof(src->v_parm));
return 0;
}
static void vlan_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_vlan *v = data;
if (!v)
return;
if (!(v->v_flags & VLAN_F_ACT))
return;
if (TC_ACT_EXT_CMP(v->v_parm.action, TC_ACT_GOTO_CHAIN))
nl_dump(p, " goto chain %u", v->v_parm.action & TC_ACT_EXT_VAL_MASK);
if (TC_ACT_EXT_CMP(v->v_parm.action, TC_ACT_JUMP))
nl_dump(p, " jump %u", v->v_parm.action & TC_ACT_EXT_VAL_MASK);
switch(v->v_parm.action){
case TC_ACT_UNSPEC:
nl_dump(p, " unspecified");
break;
case TC_ACT_PIPE:
nl_dump(p, " pipe");
break;
case TC_ACT_STOLEN:
nl_dump(p, " stolen");
break;
case TC_ACT_SHOT:
nl_dump(p, " shot");
break;
case TC_ACT_QUEUED:
nl_dump(p, " queued");
break;
case TC_ACT_REPEAT:
nl_dump(p, " repeat");
break;
}
}
static void vlan_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_vlan *v = data;
if (!v)
return;
if (v->v_flags & VLAN_F_MODE) {
switch (v->v_parm.v_action) {
case TCA_VLAN_ACT_POP:
nl_dump(p, " mode POP");
break;
case TCA_VLAN_ACT_PUSH:
nl_dump(p, " mode PUSH");
break;
case TCA_VLAN_ACT_MODIFY:
nl_dump(p, " mode MODIFY");
break;
}
}
if (v->v_flags & VLAN_F_VID)
nl_dump(p, " vlan id %u", v->v_vid);
if (v->v_flags & VLAN_F_PRIO)
nl_dump(p, " priority %u", v->v_prio);
if (v->v_flags & VLAN_F_PROTO)
nl_dump(p, " protocol %u", v->v_proto);
}
/**
* @name Attribute Modifications
* @{
*/
/**
* Set vlan mode
* @arg act vlan action
* @arg mode one of (TCA_VLAN_ACT_*: POP, PUSH, MODIFY)
* @return 0 on success or a negative error code.
*/
int rtnl_vlan_set_mode(struct rtnl_act *act, int mode)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
if (mode > TCA_VLAN_ACT_MODIFY)
return -NLE_RANGE;
v->v_parm.v_action = mode;
v->v_flags |= VLAN_F_MODE;
return 0;
}
/**
* Get vlan mode
* @arg act vlan action
* @arg out_mode vlan mode output paramter
* @return 0 on success if the vlan mode was returned or a negative error code.
*/
int rtnl_vlan_get_mode(struct rtnl_act *act, int *out_mode)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data_peek(TC_CAST(act))))
return -NLE_INVAL;
if (!(v->v_flags & VLAN_F_MODE))
return -NLE_MISSING_ATTR;
*out_mode = v->v_parm.v_action;
return 0;
}
/**
* Set general action
* @arg act vlan action
* @arg action one of (TCA_ACT_*: PIPE, SHOT, GOTO_CHAIN, etc)
* @return 0 on success or a negative error code.
*/
int rtnl_vlan_set_action(struct rtnl_act *act, int action)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
v->v_parm.action = action;
v->v_flags |= VLAN_F_ACT;
return 0;
}
/**
* Get general action
* @arg act vlan action
* @arg out_action output parameter
* @return general 0 if out_action was set or a negative error code.
*/
int rtnl_vlan_get_action(struct rtnl_act *act, int *out_action)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data_peek(TC_CAST(act))))
return -NLE_INVAL;
if (!(v->v_flags & VLAN_F_ACT))
return -NLE_MISSING_ATTR;
*out_action = v->v_parm.action;
return 0;
}
/**
* Set protocol
* @arg act vlan action
* @arg protocol one of (ETH_P_8021Q || ETH_P_8021AD)
* @return 0 on success or a negative error code.
*/
int rtnl_vlan_set_protocol(struct rtnl_act *act, uint16_t protocol)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
v->v_proto = protocol;
v->v_flags |= VLAN_F_PROTO;
return 0;
}
/**
* Get protocol
* @arg act vlan action
* @arg out_protocol protocol output argument
* @return 0 if the protocol was returned or a negative error code.
*/
int rtnl_vlan_get_protocol(struct rtnl_act *act, uint16_t *out_protocol)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data_peek(TC_CAST(act))))
return -NLE_INVAL;
if (!(v->v_flags & VLAN_F_PROTO))
return -NLE_MISSING_ATTR;
*out_protocol = v->v_proto;
return 0;
}
/**
* Set vlan id
* @arg act vlan action
* @arg vid vlan id
* @return 0 on success or a negative error code.
*/
int rtnl_vlan_set_vlan_id(struct rtnl_act *act, uint16_t vid)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
if (vid > 4095)
return -NLE_RANGE;
v->v_vid = vid;
v->v_flags |= VLAN_F_VID;
return 0;
}
/**
* Get vlan id
* @arg act vlan action
* @arg out_vid output vlan id
* @return 0 if the vlan id was returned or a negative error code.
*/
int rtnl_vlan_get_vlan_id(struct rtnl_act *act, uint16_t *out_vid)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data_peek(TC_CAST(act))))
return -NLE_INVAL;
if (!(v->v_flags & VLAN_F_VID))
return -NLE_MISSING_ATTR;
*out_vid = v->v_vid;
return 0;
}
/**
* Set vlan prio
* @arg act vlan action
* @arg prio vlan priority (0 - 7)
* @return 0 on success or a negative error code.
*/
int rtnl_vlan_set_vlan_prio(struct rtnl_act *act, uint8_t prio)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
if (prio > 7)
return -NLE_RANGE;
v->v_prio = prio;
v->v_flags |= VLAN_F_PRIO;
return 0;
}
/**
* Get vlan prio
* @arg act vlan action
* @arg out_prio the output vlan prio
* @return 0 if the vlan prio was returned or a negative error code.
*/
int rtnl_vlan_get_vlan_prio(struct rtnl_act *act, uint8_t *out_prio)
{
struct rtnl_vlan *v;
if (!(v = (struct rtnl_vlan *) rtnl_tc_data_peek(TC_CAST(act))))
return -NLE_INVAL;
if (!(v->v_flags & VLAN_F_PRIO))
return -NLE_MISSING_ATTR;
*out_prio = v->v_prio;
return 0;
}
/** @} */
static struct rtnl_tc_ops vlan_ops = {
.to_kind = "vlan",
.to_type = RTNL_TC_TYPE_ACT,
.to_size = sizeof(struct rtnl_vlan),
.to_msg_parser = vlan_msg_parser,
.to_free_data = vlan_free_data,
.to_clone = vlan_clone,
.to_msg_fill = vlan_msg_fill,
.to_dump = {
[NL_DUMP_LINE] = vlan_dump_line,
[NL_DUMP_DETAILS] = vlan_dump_details,
},
};
static void __init vlan_init(void)
{
rtnl_tc_register(&vlan_ops);
}
static void __exit vlan_exit(void)
{
rtnl_tc_unregister(&vlan_ops);
}
/** @} */

10
libnl-route-3.sym
View File

@ -1127,4 +1127,14 @@ global:
rtnl_rule_set_sport_range;
rtnl_tc_get_chain;
rtnl_tc_set_chain;
rtnl_vlan_get_action;
rtnl_vlan_get_mode;
rtnl_vlan_get_protocol;
rtnl_vlan_get_vlan_id;
rtnl_vlan_get_vlan_prio;
rtnl_vlan_set_action;
rtnl_vlan_set_mode;
rtnl_vlan_set_protocol;
rtnl_vlan_set_vlan_id;
rtnl_vlan_set_vlan_prio;
} libnl_3_4;