libnl  3.6.0
tc.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/tc.h>
8 #include <netlink-private/route/tc-api.h>
9 
10 /**
11  * @ingroup cli
12  * @defgroup cli_tc Traffic Control
13  * @{
14  */
15 void nl_cli_tc_parse_dev(struct rtnl_tc *tc, struct nl_cache *link_cache, char *name)
16 {
17  struct rtnl_link *link;
18 
19  link = rtnl_link_get_by_name(link_cache, name);
20  if (!link)
21  nl_cli_fatal(ENOENT, "Link \"%s\" does not exist.", name);
22 
23  rtnl_tc_set_link(tc, link);
24  rtnl_link_put(link);
25 }
26 
27 void nl_cli_tc_parse_parent(struct rtnl_tc *tc, char *arg)
28 {
29  uint32_t parent;
30  int err;
31 
32  if ((err = rtnl_tc_str2handle(arg, &parent)) < 0)
33  nl_cli_fatal(err, "Unable to parse handle \"%s\": %s",
34  arg, nl_geterror(err));
35 
36  rtnl_tc_set_parent(tc, parent);
37 }
38 
39 void nl_cli_tc_parse_handle(struct rtnl_tc *tc, char *arg, int create)
40 {
41  uint32_t handle, parent;
42  int err;
43 
44  parent = rtnl_tc_get_parent(tc);
45 
46  if ((err = rtnl_tc_str2handle(arg, &handle)) < 0) {
47  if (err == -NLE_OBJ_NOTFOUND && create)
48  err = rtnl_classid_generate(arg, &handle, parent);
49 
50  if (err < 0)
51  nl_cli_fatal(err, "Unable to parse handle \"%s\": %s",
52  arg, nl_geterror(err));
53  }
54 
55  rtnl_tc_set_handle(tc, handle);
56 }
57 
58 void nl_cli_tc_parse_mtu(struct rtnl_tc *tc, char *arg)
59 {
61 }
62 
63 void nl_cli_tc_parse_mpu(struct rtnl_tc *tc, char *arg)
64 {
66 }
67 
68 void nl_cli_tc_parse_overhead(struct rtnl_tc *tc, char *arg)
69 {
71 }
72 
73 void nl_cli_tc_parse_kind(struct rtnl_tc *tc, char *arg)
74 {
75  rtnl_tc_set_kind(tc, arg);
76 }
77 
78 void nl_cli_tc_parse_linktype(struct rtnl_tc *tc, char *arg)
79 {
80  int type;
81 
82  if ((type = nl_str2llproto(arg)) < 0)
83  nl_cli_fatal(type, "Unable to parse linktype \"%s\": %s",
84  arg, nl_geterror(type));
85 
86  rtnl_tc_set_linktype(tc, type);
87 }
88 
89 static NL_LIST_HEAD(tc_modules);
90 
91 static struct nl_cli_tc_module *__nl_cli_tc_lookup(struct rtnl_tc_ops *ops)
92 {
93  struct nl_cli_tc_module *tm;
94 
95  nl_list_for_each_entry(tm, &tc_modules, tm_list)
96  if (tm->tm_ops == ops)
97  return tm;
98 
99  return NULL;
100 }
101 
102 struct nl_cli_tc_module *nl_cli_tc_lookup(struct rtnl_tc_ops *ops)
103 {
104  struct nl_cli_tc_module *tm;
105 
106  if ((tm = __nl_cli_tc_lookup(ops)))
107  return tm;
108 
109  switch (ops->to_type) {
110  case RTNL_TC_TYPE_QDISC:
111  case RTNL_TC_TYPE_CLASS:
112  nl_cli_load_module("cli/qdisc", ops->to_kind);
113  break;
114 
115  case RTNL_TC_TYPE_CLS:
116  nl_cli_load_module("cli/cls", ops->to_kind);
117  break;
118 
119  default:
120  nl_cli_fatal(EINVAL, "BUG: unhandled TC object type %d",
121  ops->to_type);
122  }
123 
124  if (!(tm = __nl_cli_tc_lookup(ops))) {
125  nl_cli_fatal(EINVAL, "Application bug: The shared library for "
126  "the tc object \"%s\" was successfully loaded but it "
127  "seems that module did not register itself",
128  ops->to_kind);
129  }
130 
131  return tm;
132 }
133 
134 void nl_cli_tc_register(struct nl_cli_tc_module *tm)
135 {
136  struct rtnl_tc_ops *ops;
137 
138  if (!(ops = rtnl_tc_lookup_ops(tm->tm_type, tm->tm_name))) {
139  nl_cli_fatal(ENOENT, "Unable to register CLI TC module "
140  "\"%s\": No matching libnl TC module found.", tm->tm_name);
141  }
142 
143  if (__nl_cli_tc_lookup(ops)) {
144  nl_cli_fatal(EEXIST, "Unable to register CLI TC module "
145  "\"%s\": Module already registered.", tm->tm_name);
146  }
147 
148  tm->tm_ops = ops;
149 
150  nl_list_add_tail(&tm->tm_list, &tc_modules);
151 }
152 
153 void nl_cli_tc_unregister(struct nl_cli_tc_module *tm)
154 {
155  nl_list_del(&tm->tm_list);
156 }
157 
158 
159 /** @} */
int rtnl_tc_str2handle(const char *str, uint32_t *res)
Convert a charactering strint to a traffic control handle.
Definition: classid.c:148
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
uint32_t nl_cli_parse_u32(const char *arg)
Parse a text based 32 bit unsigned integer argument.
Definition: utils.c:36
void rtnl_tc_set_mpu(struct rtnl_tc *tc, uint32_t mpu)
Set the Minimum Packet Unit (MPU) of a traffic control object.
Definition: tc.c:393
uint32_t rtnl_tc_get_parent(struct rtnl_tc *tc)
Return parent identifier of a traffic control object.
Definition: tc.c:511
void rtnl_tc_set_linktype(struct rtnl_tc *tc, uint32_t type)
Set the linktype of a traffic control object.
Definition: tc.c:450
int rtnl_tc_set_kind(struct rtnl_tc *tc, const char *kind)
Define the type of traffic control object.
Definition: tc.c:523
void rtnl_tc_set_overhead(struct rtnl_tc *tc, uint32_t overhead)
Set per packet overhead of a traffic control object.
Definition: tc.c:422
void rtnl_tc_set_link(struct rtnl_tc *tc, struct rtnl_link *link)
Set link of traffic control object.
Definition: tc.c:304
void rtnl_tc_set_handle(struct rtnl_tc *tc, uint32_t id)
Set identifier of traffic control object.
Definition: tc.c:480
void rtnl_tc_set_parent(struct rtnl_tc *tc, uint32_t parent)
Set the parent identifier of a traffic control object.
Definition: tc.c:501
void rtnl_tc_set_mtu(struct rtnl_tc *tc, uint32_t mtu)
Set the Maximum Transmission Unit (MTU) of traffic control object.
Definition: tc.c:358