libnl: /data/src/libnl3/src/lib/cls.c Source File

libnl 3.7.0

cls.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2010-2011 Thomas Graf <tgraf@suug.ch>
4 */
5
6 /**
7 * @ingroup cli
8 * @defgroup cli_cls Classifiers
9 * @{
10 */
11
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/cls.h>
14 #include <netlink/route/cls/ematch.h>
15
16 struct rtnl_cls *nl_cli_cls_alloc(void)
17 {
18 struct rtnl_cls *cls;
19
20 if (!(cls = rtnl_cls_alloc()))
21 nl_cli_fatal(ENOMEM, "Unable to allocate classifier object");
22
23 return cls;
24 }
25
26 struct nl_cache *nl_cli_cls_alloc_cache(struct nl_sock *sock, int ifindex,
27 uint32_t parent)
28 {
29 struct nl_cache *cache;
30 int err;
31
32 if ((err = rtnl_cls_alloc_cache(sock, ifindex, parent, &cache)) < 0)
33 nl_cli_fatal(err, "Unable to allocate classifier cache: %s",
34 nl_geterror(err));
35
36 return cache;
37 }
38
39 void nl_cli_cls_parse_proto(struct rtnl_cls *cls, char *arg)
40 {
41 int proto;
42
43 if ((proto = nl_str2ether_proto(arg)) < 0)
44 nl_cli_fatal(proto, "Unknown protocol \"%s\".", arg);
45
46 rtnl_cls_set_protocol(cls, proto);
47 }
48
49 struct rtnl_ematch_tree *nl_cli_cls_parse_ematch(struct rtnl_cls *cls, char *arg)
50 {
51 struct rtnl_ematch_tree *tree;
52 char *errstr = NULL;
53 int err;
54
55 if ((err = rtnl_ematch_parse_expr(arg, &errstr, &tree)) < 0)
56 nl_cli_fatal(err, "Unable to parse ematch expression: %s",
57 errstr);
58
59 if (errstr)
60 free(errstr);
61
62 return tree;
63 }
64
65 /** @} */
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
rtnl_cls_alloc_cache
int rtnl_cls_alloc_cache(struct nl_sock *sk, int ifindex, uint32_t parent, struct nl_cache **result)
Allocate a cache and fill it with all configured classifiers.
Definition: cls.c:321