request.c

00001 /*
00002  * lib/fib_lookup/request.c     FIB Lookup Request
00003  *
00004  *      This library is free software; you can redistribute it and/or
00005  *      modify it under the terms of the GNU Lesser General Public
00006  *      License as published by the Free Software Foundation version 2.1
00007  *      of the License.
00008  *
00009  * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
00010  */
00011 
00012 /**
00013  * @ingroup fib_lookup
00014  * @defgroup flreq Request
00015  * @brief
00016  * @{
00017  */
00018 
00019 #include <netlink-local.h>
00020 #include <netlink/netlink.h>
00021 #include <netlink/attr.h>
00022 #include <netlink/utils.h>
00023 #include <netlink/object.h>
00024 #include <netlink/fib_lookup/request.h>
00025 
00026 static struct nl_object_ops request_obj_ops;
00027 
00028 /** @cond SKIP */
00029 #define REQUEST_ATTR_ADDR       0x01
00030 #define REQUEST_ATTR_FWMARK     0x02
00031 #define REQUEST_ATTR_TOS        0x04
00032 #define REQUEST_ATTR_SCOPE      0x08
00033 #define REQUEST_ATTR_TABLE      0x10
00034 /** @endcond */
00035 
00036 static void request_free_data(struct nl_object *obj)
00037 {
00038         struct flnl_request *req = REQUEST_CAST(obj);
00039 
00040         if (req)
00041                 nl_addr_put(req->lr_addr);
00042 }
00043 
00044 static int request_clone(struct nl_object *_dst, struct nl_object *_src)
00045 {
00046         struct flnl_request *dst = nl_object_priv(_dst);
00047         struct flnl_request *src = nl_object_priv(_src);
00048 
00049         if (src->lr_addr)
00050                 if (!(dst->lr_addr = nl_addr_clone(src->lr_addr)))
00051                         return -NLE_NOMEM;
00052 
00053         return 0;
00054 }
00055 
00056 static int request_compare(struct nl_object *_a, struct nl_object *_b,
00057                            uint32_t attrs, int flags)
00058 {
00059         struct flnl_request *a = (struct flnl_request *) _a;
00060         struct flnl_request *b = (struct flnl_request *) _b;
00061         int diff = 0;
00062 
00063 #define REQ_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, REQUEST_ATTR_##ATTR, a, b, EXPR)
00064 
00065         diff |= REQ_DIFF(FWMARK,        a->lr_fwmark != b->lr_fwmark);
00066         diff |= REQ_DIFF(TOS,           a->lr_tos != b->lr_tos);
00067         diff |= REQ_DIFF(SCOPE,         a->lr_scope != b->lr_scope);
00068         diff |= REQ_DIFF(TABLE,         a->lr_table != b->lr_table);
00069         diff |= REQ_DIFF(ADDR,          nl_addr_cmp(a->lr_addr, b->lr_addr));
00070 
00071 #undef REQ_DIFF
00072 
00073         return diff;
00074 }
00075 
00076 
00077 /**
00078  * @name Lookup Request Creation/Deletion
00079  * @{
00080  */
00081 
00082 struct flnl_request *flnl_request_alloc(void)
00083 {
00084         return REQUEST_CAST(nl_object_alloc(&request_obj_ops));
00085 }
00086 
00087 /** @} */
00088 
00089 /**
00090  * @name Attributes
00091  * @{
00092  */
00093 
00094 void flnl_request_set_fwmark(struct flnl_request *req, uint64_t fwmark)
00095 {
00096         req->lr_fwmark = fwmark;
00097         req->ce_mask |= REQUEST_ATTR_FWMARK;
00098 }
00099 
00100 uint64_t flnl_request_get_fwmark(struct flnl_request *req)
00101 {
00102         if (req->ce_mask & REQUEST_ATTR_FWMARK)
00103                 return req->lr_fwmark;
00104         else
00105                 return UINT_LEAST64_MAX;
00106 }
00107 
00108 void flnl_request_set_tos(struct flnl_request *req, int tos)
00109 {
00110         req->lr_tos = tos;
00111         req->ce_mask |= REQUEST_ATTR_TOS;
00112 }
00113 
00114 int flnl_request_get_tos(struct flnl_request *req)
00115 {
00116         if (req->ce_mask & REQUEST_ATTR_TOS)
00117                 return req->lr_tos;
00118         else
00119                 return -1;
00120 }
00121 
00122 void flnl_request_set_scope(struct flnl_request *req, int scope)
00123 {
00124         req->lr_scope = scope;
00125         req->ce_mask |= REQUEST_ATTR_SCOPE;
00126 }
00127 
00128 int flnl_request_get_scope(struct flnl_request *req)
00129 {
00130         if (req->ce_mask & REQUEST_ATTR_SCOPE)
00131                 return req->lr_scope;
00132         else
00133                 return -1;
00134 }
00135 
00136 void flnl_request_set_table(struct flnl_request *req, int table)
00137 {
00138         req->lr_table = table;
00139         req->ce_mask |= REQUEST_ATTR_TABLE;
00140 }
00141 
00142 int flnl_request_get_table(struct flnl_request *req)
00143 {
00144         if (req->ce_mask & REQUEST_ATTR_TABLE)
00145                 return req->lr_table;
00146         else
00147                 return -1;
00148 }
00149 
00150 int flnl_request_set_addr(struct flnl_request *req, struct nl_addr *addr)
00151 {
00152         if (addr->a_family != AF_INET)
00153                 return -NLE_AF_NOSUPPORT;
00154 
00155         if (req->lr_addr)
00156                 nl_addr_put(req->lr_addr);
00157 
00158         nl_addr_get(addr);
00159         req->lr_addr = addr;
00160 
00161         req->ce_mask |= REQUEST_ATTR_ADDR;
00162 
00163         return 0;
00164 }
00165 
00166 struct nl_addr *flnl_request_get_addr(struct flnl_request *req)
00167 {
00168         if (req->ce_mask & REQUEST_ATTR_ADDR)
00169                 return req->lr_addr;
00170         else
00171                 return NULL;
00172 }
00173 
00174 /** @} */
00175 
00176 static struct nl_object_ops request_obj_ops = {
00177         .oo_name                = "fib_lookup/request",
00178         .oo_size                = sizeof(struct flnl_request),
00179         .oo_free_data           = request_free_data,
00180         .oo_clone               = request_clone,
00181         .oo_compare             = request_compare,
00182         .oo_id_attrs            = ~0,
00183 };
00184 
00185 /** @} */