libnl  3.2.24-rc1
cls.c
1 /*
2  * src/lib/cls.c CLI Classifier Helpers
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation version 2.1
7  * of the License.
8  *
9  * Copyright (c) 2010-2011 Thomas Graf <tgraf@suug.ch>
10  */
11 
12 /**
13  * @ingroup cli
14  * @defgroup cli_cls Classifiers
15  * @{
16  */
17 
18 #include <netlink/cli/utils.h>
19 #include <netlink/cli/cls.h>
20 #include <netlink/route/cls/ematch.h>
21 
22 struct rtnl_cls *nl_cli_cls_alloc(void)
23 {
24  struct rtnl_cls *cls;
25 
26  if (!(cls = rtnl_cls_alloc()))
27  nl_cli_fatal(ENOMEM, "Unable to allocate classifier object");
28 
29  return cls;
30 }
31 
32 struct nl_cache *nl_cli_cls_alloc_cache(struct nl_sock *sock, int ifindex,
33  uint32_t parent)
34 {
35  struct nl_cache *cache;
36  int err;
37 
38  if ((err = rtnl_cls_alloc_cache(sock, ifindex, parent, &cache)) < 0)
39  nl_cli_fatal(err, "Unable to allocate classifier cache: %s",
40  nl_geterror(err));
41 
42  return cache;
43 }
44 
45 void nl_cli_cls_parse_proto(struct rtnl_cls *cls, char *arg)
46 {
47  int proto;
48 
49  if ((proto = nl_str2ether_proto(arg)) < 0)
50  nl_cli_fatal(proto, "Unknown protocol \"%s\".", arg);
51 
52  rtnl_cls_set_protocol(cls, proto);
53 }
54 
55 struct rtnl_ematch_tree *nl_cli_cls_parse_ematch(struct rtnl_cls *cls, char *arg)
56 {
57  struct rtnl_ematch_tree *tree;
58  char *errstr = NULL;
59  int err;
60 
61  if ((err = rtnl_ematch_parse_expr(arg, &errstr, &tree)) < 0)
62  nl_cli_fatal(err, "Unable to parse ematch expression: %s",
63  errstr);
64 
65  if (errstr)
66  free(errstr);
67 
68  return tree;
69 }
70 
71 /** @} */