libnl  3.6.0
link.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 /**
7  * @ingroup cli
8  * @defgroup cli_link Links
9  *
10  * @{
11  */
12 
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/link.h>
15 #include <linux/if.h>
16 
17 struct rtnl_link *nl_cli_link_alloc(void)
18 {
19  struct rtnl_link *link;
20 
21  link = rtnl_link_alloc();
22  if (!link)
23  nl_cli_fatal(ENOMEM, "Unable to allocate link object");
24 
25  return link;
26 }
27 
28 struct nl_cache *nl_cli_link_alloc_cache_family_flags(struct nl_sock *sock,
29  int family,
30  unsigned int flags)
31 {
32  struct nl_cache *cache;
33  int err;
34 
35  if ((err = rtnl_link_alloc_cache_flags(sock, family, &cache, flags)) < 0)
36  nl_cli_fatal(err, "Unable to allocate link cache: %s",
37  nl_geterror(err));
38 
39  nl_cache_mngt_provide(cache);
40 
41  return cache;
42 }
43 
44 struct nl_cache *nl_cli_link_alloc_cache_family(struct nl_sock *sock, int family)
45 {
46  return nl_cli_link_alloc_cache_family_flags(sock, family, 0);
47 }
48 
49 struct nl_cache *nl_cli_link_alloc_cache(struct nl_sock *sock)
50 {
51  return nl_cli_link_alloc_cache_family(sock, AF_UNSPEC);
52 }
53 
54 struct nl_cache *nl_cli_link_alloc_cache_flags(struct nl_sock *sock,
55  unsigned int flags)
56 {
57  return nl_cli_link_alloc_cache_family_flags(sock, AF_UNSPEC, flags);
58 }
59 
60 void nl_cli_link_parse_family(struct rtnl_link *link, char *arg)
61 {
62  int family;
63 
64  if ((family = nl_str2af(arg)) < 0)
65  nl_cli_fatal(EINVAL,
66  "Unable to translate address family \"%s\"", arg);
67 
68  rtnl_link_set_family(link, family);
69 }
70 
71 void nl_cli_link_parse_name(struct rtnl_link *link, char *arg)
72 {
73  rtnl_link_set_name(link, arg);
74 }
75 
76 void nl_cli_link_parse_mtu(struct rtnl_link *link, char *arg)
77 {
78  uint32_t mtu = nl_cli_parse_u32(arg);
79  rtnl_link_set_mtu(link, mtu);
80 }
81 
82 void nl_cli_link_parse_ifindex(struct rtnl_link *link, char *arg)
83 {
84  uint32_t index = nl_cli_parse_u32(arg);
85  rtnl_link_set_ifindex(link, index);
86 }
87 
88 void nl_cli_link_parse_txqlen(struct rtnl_link *link, char *arg)
89 {
90  uint32_t qlen = nl_cli_parse_u32(arg);
91  rtnl_link_set_txqlen(link, qlen);
92 }
93 
94 void nl_cli_link_parse_weight(struct rtnl_link *link, char *arg)
95 {
96 }
97 
98 void nl_cli_link_parse_ifalias(struct rtnl_link *link, char *arg)
99 {
100  if (strlen(arg) > IFALIASZ)
101  nl_cli_fatal(ERANGE,
102  "Link ifalias too big, must not exceed %u in length.",
103  IFALIASZ);
104 
105  rtnl_link_set_ifalias(link, arg);
106 }
107 
108 /** @} */
void nl_cache_mngt_provide(struct nl_cache *cache)
Provide a cache for global use.
Definition: cache_mngt.c:326
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