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1 office 1 /*
2 * lib/fib_lookup/request.c FIB Lookup Request
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) 2003-2008 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 /**
13 * @ingroup fib_lookup
14 * @defgroup flreq Request
15 * @brief
16 * @{
17 */
18  
19 #include <netlink-local.h>
20 #include <netlink/netlink.h>
21 #include <netlink/attr.h>
22 #include <netlink/utils.h>
23 #include <netlink/object.h>
24 #include <netlink/fib_lookup/request.h>
25  
26 static struct nl_object_ops request_obj_ops;
27  
28 /** @cond SKIP */
29 #define REQUEST_ATTR_ADDR 0x01
30 #define REQUEST_ATTR_FWMARK 0x02
31 #define REQUEST_ATTR_TOS 0x04
32 #define REQUEST_ATTR_SCOPE 0x08
33 #define REQUEST_ATTR_TABLE 0x10
34 /** @endcond */
35  
36 static void request_free_data(struct nl_object *obj)
37 {
38 struct flnl_request *req = REQUEST_CAST(obj);
39  
40 if (req)
41 nl_addr_put(req->lr_addr);
42 }
43  
44 static int request_clone(struct nl_object *_dst, struct nl_object *_src)
45 {
46 struct flnl_request *dst = nl_object_priv(_dst);
47 struct flnl_request *src = nl_object_priv(_src);
48  
49 if (src->lr_addr)
50 if (!(dst->lr_addr = nl_addr_clone(src->lr_addr)))
51 return -NLE_NOMEM;
52  
53 return 0;
54 }
55  
56 static int request_compare(struct nl_object *_a, struct nl_object *_b,
57 uint32_t attrs, int flags)
58 {
59 struct flnl_request *a = (struct flnl_request *) _a;
60 struct flnl_request *b = (struct flnl_request *) _b;
61 int diff = 0;
62  
63 #define REQ_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, REQUEST_ATTR_##ATTR, a, b, EXPR)
64  
65 diff |= REQ_DIFF(FWMARK, a->lr_fwmark != b->lr_fwmark);
66 diff |= REQ_DIFF(TOS, a->lr_tos != b->lr_tos);
67 diff |= REQ_DIFF(SCOPE, a->lr_scope != b->lr_scope);
68 diff |= REQ_DIFF(TABLE, a->lr_table != b->lr_table);
69 diff |= REQ_DIFF(ADDR, nl_addr_cmp(a->lr_addr, b->lr_addr));
70  
71 #undef REQ_DIFF
72  
73 return diff;
74 }
75  
76  
77 /**
78 * @name Lookup Request Creation/Deletion
79 * @{
80 */
81  
82 struct flnl_request *flnl_request_alloc(void)
83 {
84 return REQUEST_CAST(nl_object_alloc(&request_obj_ops));
85 }
86  
87 /** @} */
88  
89 /**
90 * @name Attributes
91 * @{
92 */
93  
94 void flnl_request_set_fwmark(struct flnl_request *req, uint64_t fwmark)
95 {
96 req->lr_fwmark = fwmark;
97 req->ce_mask |= REQUEST_ATTR_FWMARK;
98 }
99  
100 uint64_t flnl_request_get_fwmark(struct flnl_request *req)
101 {
102 if (req->ce_mask & REQUEST_ATTR_FWMARK)
103 return req->lr_fwmark;
104 else
105 return UINT_LEAST64_MAX;
106 }
107  
108 void flnl_request_set_tos(struct flnl_request *req, int tos)
109 {
110 req->lr_tos = tos;
111 req->ce_mask |= REQUEST_ATTR_TOS;
112 }
113  
114 int flnl_request_get_tos(struct flnl_request *req)
115 {
116 if (req->ce_mask & REQUEST_ATTR_TOS)
117 return req->lr_tos;
118 else
119 return -1;
120 }
121  
122 void flnl_request_set_scope(struct flnl_request *req, int scope)
123 {
124 req->lr_scope = scope;
125 req->ce_mask |= REQUEST_ATTR_SCOPE;
126 }
127  
128 int flnl_request_get_scope(struct flnl_request *req)
129 {
130 if (req->ce_mask & REQUEST_ATTR_SCOPE)
131 return req->lr_scope;
132 else
133 return -1;
134 }
135  
136 void flnl_request_set_table(struct flnl_request *req, int table)
137 {
138 req->lr_table = table;
139 req->ce_mask |= REQUEST_ATTR_TABLE;
140 }
141  
142 int flnl_request_get_table(struct flnl_request *req)
143 {
144 if (req->ce_mask & REQUEST_ATTR_TABLE)
145 return req->lr_table;
146 else
147 return -1;
148 }
149  
150 int flnl_request_set_addr(struct flnl_request *req, struct nl_addr *addr)
151 {
152 if (addr->a_family != AF_INET)
153 return -NLE_AF_NOSUPPORT;
154  
155 if (req->lr_addr)
156 nl_addr_put(req->lr_addr);
157  
158 nl_addr_get(addr);
159 req->lr_addr = addr;
160  
161 req->ce_mask |= REQUEST_ATTR_ADDR;
162  
163 return 0;
164 }
165  
166 struct nl_addr *flnl_request_get_addr(struct flnl_request *req)
167 {
168 if (req->ce_mask & REQUEST_ATTR_ADDR)
169 return req->lr_addr;
170 else
171 return NULL;
172 }
173  
174 /** @} */
175  
176 static struct nl_object_ops request_obj_ops = {
177 .oo_name = "fib_lookup/request",
178 .oo_size = sizeof(struct flnl_request),
179 .oo_free_data = request_free_data,
180 .oo_clone = request_clone,
181 .oo_compare = request_compare,
182 .oo_id_attrs = ~0,
183 };
184  
185 /** @} */