libnl 3.5.0

link.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/lib/link.c CLI Link Helpers
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
11 */
12
13 /**
14 * @ingroup cli
15 * @defgroup cli_link Links
16 *
17 * @{
18 */
19
20 #include <netlink/cli/utils.h>
21 #include <netlink/cli/link.h>
22 #include <linux/if.h>
23
24 struct rtnl_link *nl_cli_link_alloc(void)
25 {
26 struct rtnl_link *link;
27
28 link = rtnl_link_alloc();
29 if (!link)
30 nl_cli_fatal(ENOMEM, "Unable to allocate link object");
31
32 return link;
33 }
34
35 struct nl_cache *nl_cli_link_alloc_cache_family_flags(struct nl_sock *sock,
36 int family,
37 unsigned int flags)
38 {
39 struct nl_cache *cache;
40 int err;
41
42 if ((err = rtnl_link_alloc_cache_flags(sock, family, &cache, flags)) < 0)
43 nl_cli_fatal(err, "Unable to allocate link cache: %s",
44 nl_geterror(err));
45
46 nl_cache_mngt_provide(cache);
47
48 return cache;
49 }
50
51 struct nl_cache *nl_cli_link_alloc_cache_family(struct nl_sock *sock, int family)
52 {
53 return nl_cli_link_alloc_cache_family_flags(sock, family, 0);
54 }
55
56 struct nl_cache *nl_cli_link_alloc_cache(struct nl_sock *sock)
57 {
58 return nl_cli_link_alloc_cache_family(sock, AF_UNSPEC);
59 }
60
61 struct nl_cache *nl_cli_link_alloc_cache_flags(struct nl_sock *sock,
62 unsigned int flags)
63 {
64 return nl_cli_link_alloc_cache_family_flags(sock, AF_UNSPEC, flags);
65 }
66
67 void nl_cli_link_parse_family(struct rtnl_link *link, char *arg)
68 {
69 int family;
70
71 if ((family = nl_str2af(arg)) < 0)
72 nl_cli_fatal(EINVAL,
73 "Unable to translate address family \"%s\"", arg);
74
75 rtnl_link_set_family(link, family);
76 }
77
78 void nl_cli_link_parse_name(struct rtnl_link *link, char *arg)
79 {
80 rtnl_link_set_name(link, arg);
81 }
82
83 void nl_cli_link_parse_mtu(struct rtnl_link *link, char *arg)
84 {
85 uint32_t mtu = nl_cli_parse_u32(arg);
86 rtnl_link_set_mtu(link, mtu);
87 }
88
89 void nl_cli_link_parse_ifindex(struct rtnl_link *link, char *arg)
90 {
91 uint32_t index = nl_cli_parse_u32(arg);
92 rtnl_link_set_ifindex(link, index);
93 }
94
95 void nl_cli_link_parse_txqlen(struct rtnl_link *link, char *arg)
96 {
97 uint32_t qlen = nl_cli_parse_u32(arg);
98 rtnl_link_set_txqlen(link, qlen);
99 }
100
101 void nl_cli_link_parse_weight(struct rtnl_link *link, char *arg)
102 {
103 }
104
105 void nl_cli_link_parse_ifalias(struct rtnl_link *link, char *arg)
106 {
107 if (strlen(arg) > IFALIASZ)
108 nl_cli_fatal(ERANGE,
109 "Link ifalias too big, must not exceed %u in length.",
110 IFALIASZ);
111
112 rtnl_link_set_ifalias(link, arg);
113 }
114
115 /** @} */
nl_cache_mngt_provide
void nl_cache_mngt_provide(struct nl_cache *cache)
Provide a cache for global use.
Definition: cache_mngt.c:333
rtnl_link_alloc_cache_flags
int rtnl_link_alloc_cache_flags(struct nl_sock *sk, int family, struct nl_cache **result, unsigned int flags)
Allocate link cache and fill in all configured links.
Definition: link.c:1236
rtnl_link_set_ifindex
void rtnl_link_set_ifindex(struct rtnl_link *link, int ifindex)
Set interface index of link object.
Definition: link.c:2187
rtnl_link_alloc
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
Definition: link.c:1931
rtnl_link
Link object.
rtnl_link_set_ifalias
void rtnl_link_set_ifalias(struct rtnl_link *link, const char *alias)
Set alias name of link object (SNMP IfAlias)
Definition: link.c:2457
rtnl_link_set_family
void rtnl_link_set_family(struct rtnl_link *link, int family)
Set address family of link object.
Definition: link.c:2122
rtnl_link_set_name
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
Definition: link.c:1959
nl_cli_parse_u32
uint32_t nl_cli_parse_u32(const char *arg)
Parse a text based 32 bit unsigned integer argument.
Definition: utils.c:43
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
rtnl_link_set_mtu
void rtnl_link_set_mtu(struct rtnl_link *link, unsigned int mtu)
Set Maximum Transmission Unit of link object.
Definition: link.c:2215
rtnl_link_set_txqlen
void rtnl_link_set_txqlen(struct rtnl_link *link, unsigned int txqlen)
Set transmission queue length.
Definition: link.c:2244