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route/act: add gact tc action

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Signed-off-by: Sushma Sitaram <sushma.sitaram@intel.com>
Signed-off-by: Thomas Haller <thaller@redhat.com>

http://lists.infradead.org/pipermail/libnl/2016-November/002249.html
This commit is contained in:
Sushma Sitaram 2016-11-10 14:47:53 -08:00 committed by Thomas Haller
parent 7e88d00c09
commit 993a62d450
7 changed files with 258 additions and 0 deletions
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2
include/Makefile.am
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@ -34,6 +34,7 @@ nobase_libnlinclude_HEADERS = \
netlink/route/action.h \
netlink/route/act/mirred.h \
netlink/route/act/skbedit.h \
netlink/route/act/gact.h \
netlink/route/cls/ematch/cmp.h \
netlink/route/cls/ematch/meta.h \
netlink/route/cls/ematch/nbyte.h \
@ -158,6 +159,7 @@ noinst_HEADERS = \
linux-private/linux/socket.h \
linux-private/linux/tc_act/tc_mirred.h \
linux-private/linux/tc_act/tc_skbedit.h \
linux-private/linux/tc_act/tc_gact.h \
linux-private/linux/pkt_sched.h \
linux-private/linux/rtnetlink.h \
linux-private/linux/snmp.h \

33
include/linux-private/linux/tc_act/tc_gact.h Normal file
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@ -0,0 +1,33 @@
#ifndef __LINUX_TC_GACT_H
#define __LINUX_TC_GACT_H
#include <linux/types.h>
#include <linux/pkt_cls.h>
#define TCA_ACT_GACT 5
struct tc_gact {
tc_gen;
};
struct tc_gact_p {
#define PGACT_NONE 0
#define PGACT_NETRAND 1
#define PGACT_DETERM 2
#define MAX_RAND (PGACT_DETERM + 1 )
__u16 ptype;
__u16 pval;
int paction;
};
enum {
TCA_GACT_UNSPEC,
TCA_GACT_TM,
TCA_GACT_PARMS,
TCA_GACT_PROB,
TCA_GACT_PAD,
__TCA_GACT_MAX
};
#define TCA_GACT_MAX (__TCA_GACT_MAX - 1)
#endif

6
include/netlink-private/types.h
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@ -25,6 +25,7 @@
#include <netlink-private/route/link/sriov.h>
#include <linux/tc_act/tc_mirred.h>
#include <linux/tc_act/tc_skbedit.h>
#include <linux/tc_act/tc_gact.h>
#define NL_SOCK_PASSCRED (1<<1)
#define NL_OWN_PORT (1<<2)
@ -558,6 +559,11 @@ struct rtnl_skbedit
uint16_t s_queue_mapping;
};
struct rtnl_gact
{
struct tc_gact g_parm;
};
struct rtnl_u32
{
uint32_t cu_divisor;

31
include/netlink/route/act/gact.h Normal file
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@ -0,0 +1,31 @@
/*
* netlink/route/act/gact.h gact 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) 2016 Sushma Sitaram <sushma.sitaram@intel.com>
*/
#ifndef NETLINK_GACT_H_
#define NETLINK_GACT_H_
#include <netlink/netlink.h>
#include <netlink/cache.h>
#include <netlink/route/action.h>
#include <linux/tc_act/tc_gact.h>
#ifdef __cplusplus
extern "C" {
#endif
extern int rtnl_gact_set_action(struct rtnl_act *act, int action);
extern int rtnl_gact_get_action(struct rtnl_act *act);
#ifdef __cplusplus
}
#endif
#endif

1
lib/Makefile.am
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@ -99,6 +99,7 @@ libnl_route_3_la_SOURCES = \
\
route/act/mirred.c \
route/act/skbedit.c \
route/act/gact.c \
\
route/cls/ematch.c \
route/cls/ematch/container.c route/cls/ematch/cmp.c \

183
lib/route/act/gact.c Normal file
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@ -0,0 +1,183 @@
/*
* lib/route/act/gact.c gact 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) 2016 Sushma Sitaram <sushma.sitaram@intel.com>
*/
/**
* @ingroup act
* @defgroup act_gact GACT Editing
*
* @{
*/
#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/gact.h>
static struct nla_policy gact_policy[TCA_GACT_MAX + 1] = {
[TCA_GACT_PARMS] = { .minlen = sizeof(struct tc_gact) },
};
static int gact_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_gact *u = data;
struct nlattr *tb[TCA_GACT_MAX + 1];
int err;
err = tca_parse(tb, TCA_GACT_MAX, tc, gact_policy);
if (err < 0)
return err;
if (!tb[TCA_GACT_PARMS])
return -NLE_MISSING_ATTR;
nla_memcpy(&u->g_parm, tb[TCA_GACT_PARMS], sizeof(u->g_parm));
return 0;
}
static void gact_free_data(struct rtnl_tc *tc, void *data)
{
}
static int gact_clone(void *_dst, void *_src)
{
struct rtnl_gact *dst = _dst, *src = _src;
memcpy(&dst->g_parm, &src->g_parm, sizeof(src->g_parm));
return 0;
}
static void gact_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_gact *u = data;
if (!u)
return;
switch(u->g_parm.action){
case TC_ACT_UNSPEC:
nl_dump(p, " continue");
break;
case TC_ACT_SHOT:
nl_dump(p, " drop");
break;
case TC_ACT_RECLASSIFY:
nl_dump(p, " reclassify");
break;
case TC_ACT_OK:
nl_dump(p, " pass");
break;
}
}
static void gact_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
}
static void gact_dump_stats(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_gact *u = data;
if (!u)
return;
/* TODO */
}
static int gact_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
{
struct rtnl_gact *u = data;
if (!u)
return 0;
NLA_PUT(msg, TCA_GACT_PARMS, sizeof(u->g_parm), &u->g_parm);
return 0;
nla_put_failure:
return -NLE_NOMEM;
}
/**
* @name Attribute Modifications
* @{
*/
int rtnl_gact_set_action(struct rtnl_act *act, int action)
{
struct rtnl_gact *u;
if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
if (action > TC_ACT_SHOT || action < TC_ACT_UNSPEC)
return -NLE_INVAL;
switch (action) {
case TC_ACT_UNSPEC:
case TC_ACT_SHOT:
u->g_parm.action = action;
break;
case TC_ACT_OK:
case TC_ACT_RECLASSIFY:
default:
return NLE_OPNOTSUPP;
}
return 0;
}
int rtnl_gact_get_action(struct rtnl_act *act)
{
struct rtnl_gact *u;
if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
return -NLE_NOMEM;
return u->g_parm.action;
}
/** @} */
static struct rtnl_tc_ops gact_ops = {
.to_kind = "gact",
.to_type = RTNL_TC_TYPE_ACT,
.to_size = sizeof(struct rtnl_gact),
.to_msg_parser = gact_msg_parser,
.to_free_data = gact_free_data,
.to_clone = gact_clone,
.to_msg_fill = gact_msg_fill,
.to_dump = {
[NL_DUMP_LINE] = gact_dump_line,
[NL_DUMP_DETAILS] = gact_dump_details,
[NL_DUMP_STATS] = gact_dump_stats,
},
};
static void __init gact_init(void)
{
rtnl_tc_register(&gact_ops);
}
static void __exit gact_exit(void)
{
rtnl_tc_unregister(&gact_ops);
}
/** @} */

2
libnl-route-3.sym
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@ -949,6 +949,8 @@ global:
libnl_3_2_29 {
global:
rtnl_gact_set_action;
rtnl_gact_get_action;
rtnl_link_bridge_portstate2str;
rtnl_link_bridge_str2portstate;
rtnl_link_bridge_set_self;