libnl 3.5.0

cls.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/lib/cls.c CLI Classifier 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) 2010-2011 Thomas Graf <tgraf@suug.ch>
11 */
12
13 /**
14 * @ingroup cli
15 * @defgroup cli_cls Classifiers
16 * @{
17 */
18
19 #include <netlink/cli/utils.h>
20 #include <netlink/cli/cls.h>
21 #include <netlink/route/cls/ematch.h>
22
23 struct rtnl_cls *nl_cli_cls_alloc(void)
24 {
25 struct rtnl_cls *cls;
26
27 if (!(cls = rtnl_cls_alloc()))
28 nl_cli_fatal(ENOMEM, "Unable to allocate classifier object");
29
30 return cls;
31 }
32
33 struct nl_cache *nl_cli_cls_alloc_cache(struct nl_sock *sock, int ifindex,
34 uint32_t parent)
35 {
36 struct nl_cache *cache;
37 int err;
38
39 if ((err = rtnl_cls_alloc_cache(sock, ifindex, parent, &cache)) < 0)
40 nl_cli_fatal(err, "Unable to allocate classifier cache: %s",
41 nl_geterror(err));
42
43 return cache;
44 }
45
46 void nl_cli_cls_parse_proto(struct rtnl_cls *cls, char *arg)
47 {
48 int proto;
49
50 if ((proto = nl_str2ether_proto(arg)) < 0)
51 nl_cli_fatal(proto, "Unknown protocol \"%s\".", arg);
52
53 rtnl_cls_set_protocol(cls, proto);
54 }
55
56 struct rtnl_ematch_tree *nl_cli_cls_parse_ematch(struct rtnl_cls *cls, char *arg)
57 {
58 struct rtnl_ematch_tree *tree;
59 char *errstr = NULL;
60 int err;
61
62 if ((err = rtnl_ematch_parse_expr(arg, &errstr, &tree)) < 0)
63 nl_cli_fatal(err, "Unable to parse ematch expression: %s",
64 errstr);
65
66 if (errstr)
67 free(errstr);
68
69 return tree;
70 }
71
72 /** @} */
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:328
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78