libnl: /data/src/libnl/lib/route/act/gact.c Source File

libnl 3.12.0

gact.c
1/* SPDX-License-Identifier: LGPL-2.1-only */
2/*
3 * Copyright (c) 2016 Sushma Sitaram <sushma.sitaram@intel.com>
4 */
5
6/**
7 * @ingroup act
8 * @defgroup act_gact GACT Editing
9 *
10 * @{
11 */
12
13#include "nl-default.h"
14
15#include <netlink/netlink.h>
16#include <netlink/attr.h>
17#include <netlink/utils.h>
18#include <netlink/route/act/gact.h>
19
20#include "tc-api.h"
21
22 struct rtnl_gact {
23 struct tc_gact g_parm;
24};
25
26static struct nla_policy gact_policy[TCA_GACT_MAX + 1] = {
27 [TCA_GACT_PARMS] = { .minlen = sizeof(struct tc_gact) },
28};
29
30static int gact_msg_parser(struct rtnl_tc *tc, void *data)
31{
32 struct rtnl_gact *u = data;
33 struct nlattr *tb[TCA_GACT_MAX + 1];
34 int err;
35
36 err = tca_parse(tb, TCA_GACT_MAX, tc, gact_policy);
37 if (err < 0)
38 return err;
39
40 if (!tb[TCA_GACT_PARMS])
41 return -NLE_MISSING_ATTR;
42
43 nla_memcpy(&u->g_parm, tb[TCA_GACT_PARMS], sizeof(u->g_parm));
44
45 return 0;
46}
47
48static void gact_free_data(struct rtnl_tc *tc, void *data)
49{
50}
51
52static void gact_dump_line(struct rtnl_tc *tc, void *data,
53 struct nl_dump_params *p)
54{
55 struct rtnl_gact *u = data;
56
57 if (!u)
58 return;
59
60 switch(u->g_parm.action){
61 case TC_ACT_UNSPEC:
62 nl_dump(p, " continue");
63 break;
64 case TC_ACT_SHOT:
65 nl_dump(p, " drop");
66 break;
67 case TC_ACT_RECLASSIFY:
68 nl_dump(p, " reclassify");
69 break;
70 case TC_ACT_OK:
71 nl_dump(p, " pass");
72 break;
73 }
74
75}
76
77static void gact_dump_details(struct rtnl_tc *tc, void *data,
78 struct nl_dump_params *p)
79{
80}
81
82static void gact_dump_stats(struct rtnl_tc *tc, void *data,
83 struct nl_dump_params *p)
84{
85 struct rtnl_gact *u = data;
86
87 if (!u)
88 return;
89 /* TODO */
90}
91
92
93static int gact_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
94{
95 struct rtnl_gact *u = data;
96
97 if (!u)
98 return 0;
99
100 NLA_PUT(msg, TCA_GACT_PARMS, sizeof(u->g_parm), &u->g_parm);
101
102 return 0;
103
104nla_put_failure:
105 return -NLE_NOMEM;
106}
107
108/**
109 * @name Attribute Modifications
110 * @{
111 */
112
113int rtnl_gact_set_action(struct rtnl_act *act, int action)
114{
115 struct rtnl_gact *u;
116
117 if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
118 return -NLE_NOMEM;
119
120 u->g_parm.action = action;
121
122 return 0;
123}
124
125int rtnl_gact_get_action(struct rtnl_act *act)
126{
127 struct rtnl_gact *u;
128
129 if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
130 return -NLE_NOMEM;
131 return u->g_parm.action;
132}
133
134
135/** @} */
136
137static struct rtnl_tc_ops gact_ops = {
138 .to_kind = "gact",
139 .to_type = RTNL_TC_TYPE_ACT,
140 .to_size = sizeof(struct rtnl_gact),
141 .to_msg_parser = gact_msg_parser,
142 .to_free_data = gact_free_data,
143 .to_clone = NULL,
144 .to_msg_fill = gact_msg_fill,
145 .to_dump = {
146 [NL_DUMP_LINE] = gact_dump_line,
147 [NL_DUMP_DETAILS] = gact_dump_details,
148 [NL_DUMP_STATS] = gact_dump_stats,
149 },
150};
151
152static void _nl_init gact_init(void)
153{
154 rtnl_tc_register(&gact_ops);
155}
156
157static void _nl_exit gact_exit(void)
158{
159 rtnl_tc_unregister(&gact_ops);
160}
161
162/** @} */
NLA_PUT
#define NLA_PUT(msg, attrtype, attrlen, data)
Add unspecific attribute to netlink message.
Definition attr.h:166
nla_memcpy
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
Definition attr.c:355
TC_CAST
#define TC_CAST(ptr)
Macro to cast qdisc/class/classifier to tc object.
Definition tc.h:50
rtnl_tc_data
void * rtnl_tc_data(struct rtnl_tc *)
Return pointer to private data of traffic control object.
Definition tc.c:1079
rtnl_tc_register
int rtnl_tc_register(struct rtnl_tc_ops *)
Register a traffic control module.
Definition tc.c:1018
rtnl_tc_unregister
void rtnl_tc_unregister(struct rtnl_tc_ops *)
Unregister a traffic control module.
Definition tc.c:1052
nl_dump
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition utils.c:1015
NL_DUMP_STATS
@ NL_DUMP_STATS
Dump all attributes including statistics.
Definition types.h:22
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition types.h:20
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition types.h:21
nl_dump_params
Dumping parameters.
Definition types.h:32
nla_policy
Attribute validation policy.
Definition attr.h:66
rtnl_act
Definition nl-route.h:123
rtnl_gact
Definition gact.c:22
rtnl_tc
Definition nl-route.h:115