1 /* 2 * netlink-local.h Local Netlink Interface 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 (at) suug.ch> 10 */ 11 12 #ifndef NETLINK_LOCAL_H_ 13 #define NETLINK_LOCAL_H_ 14 15 #include <stdio.h> 16 #include <errno.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include <unistd.h> 20 #include <fcntl.h> 21 #include <math.h> 22 #include <time.h> 23 #include <stdarg.h> 24 #include <ctype.h> 25 #include <sys/types.h> 26 #include <sys/stat.h> 27 #include <sys/socket.h> 28 #include <inttypes.h> 29 #include <assert.h> 30 #include <limits.h> 31 32 #include <arpa/inet.h> 33 #include <netdb.h> 34 35 #ifndef SOL_NETLINK 36 #define SOL_NETLINK 270 37 #endif 38 39 #include <linux/types.h> 40 41 /* local header copies */ 42 #include <linux/if.h> 43 #include <linux/if_arp.h> 44 #include <linux/if_ether.h> 45 #include <linux/pkt_sched.h> 46 #include <linux/pkt_cls.h> 47 #include <linux/gen_stats.h> 48 #include <linux/ip_mp_alg.h> 49 50 #include <netlink/netlink.h> 51 #include <netlink/handlers.h> 52 #include <netlink/cache.h> 53 #include <netlink/route/tc.h> 54 #include <netlink/object-api.h> 55 #include <netlink/cache-api.h> 56 #include <netlink-types.h> 57 58 struct trans_tbl { 59 int i; 60 const char *a; 61 }; 62 63 #define __ADD(id, name) { .i = id, .a = #name }, 64 65 struct trans_list { 66 int i; 67 char *a; 68 struct nl_list_head list; 69 }; 70 71 #define NL_DEBUG 1 72 73 #define NL_DBG(LVL,FMT,ARG...) \ 74 do { \ 75 if (LVL <= nl_debug) \ 76 fprintf(stderr, "DBG<" #LVL ">: " FMT, ##ARG); \ 77 } while (0) 78 79 #define BUG() \ 80 do { \ 81 fprintf(stderr, "BUG: %s:%d\n", \ 82 __FILE__, __LINE__); \ 83 assert(0); \ 84 } while (0) 85 86 extern int __nl_read_num_str_file(const char *path, 87 int (*cb)(long, const char *)); 88 89 extern int __trans_list_add(int, const char *, struct nl_list_head *); 90 extern void __trans_list_clear(struct nl_list_head *); 91 92 extern char *__type2str(int, char *, size_t, struct trans_tbl *, size_t); 93 extern int __str2type(const char *, struct trans_tbl *, size_t); 94 95 extern char *__list_type2str(int, char *, size_t, struct nl_list_head *); 96 extern int __list_str2type(const char *, struct nl_list_head *); 97 98 extern char *__flags2str(int, char *, size_t, struct trans_tbl *, size_t); 99 extern int __str2flags(const char *, struct trans_tbl *, size_t); 100 101 extern void dump_from_ops(struct nl_object *, struct nl_dump_params *); 102 103 static inline struct nl_cache *dp_cache(struct nl_object *obj) 104 { 105 if (obj->ce_cache == NULL) 106 return nl_cache_mngt_require(obj->ce_ops->oo_name); 107 108 return obj->ce_cache; 109 } 110 111 static inline int nl_cb_call(struct nl_cb *cb, int type, struct nl_msg *msg) 112 { 113 return cb->cb_set[type](msg, cb->cb_args[type]); 114 } 115 116 #define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0])) 117 #ifndef offsetof 118 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) 119 #endif 120 121 #define __init __attribute__ ((constructor)) 122 #define __exit __attribute__ ((destructor)) 123 #undef __deprecated 124 #define __deprecated __attribute__ ((deprecated)) 125 126 #define min(x,y) ({ \ 127 typeof(x) _x = (x); \ 128 typeof(y) _y = (y); \ 129 (void) (&_x == &_y); \ 130 _x < _y ? _x : _y; }) 131 132 #define max(x,y) ({ \ 133 typeof(x) _x = (x); \ 134 typeof(y) _y = (y); \ 135 (void) (&_x == &_y); \ 136 _x > _y ? _x : _y; }) 137 138 #define min_t(type,x,y) \ 139 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) 140 #define max_t(type,x,y) \ 141 ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) 142 143 extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *, 144 struct nlmsghdr *, struct nl_parser_param *); 145 146 147 static inline void rtnl_copy_ratespec(struct rtnl_ratespec *dst, 148 struct tc_ratespec *src) 149 { 150 dst->rs_cell_log = src->cell_log; 151 dst->rs_feature = src->feature; 152 dst->rs_addend = src->addend; 153 dst->rs_mpu = src->mpu; 154 dst->rs_rate = src->rate; 155 } 156 157 static inline void rtnl_rcopy_ratespec(struct tc_ratespec *dst, 158 struct rtnl_ratespec *src) 159 { 160 dst->cell_log = src->rs_cell_log; 161 dst->feature = src->rs_feature; 162 dst->addend = src->rs_addend; 163 dst->mpu = src->rs_mpu; 164 dst->rate = src->rs_rate; 165 } 166 167 static inline char *nl_cache_name(struct nl_cache *cache) 168 { 169 return cache->c_ops ? cache->c_ops->co_name : "unknown"; 170 } 171 172 #define GENL_FAMILY(id, name) \ 173 { \ 174 { id, NL_ACT_UNSPEC, name }, \ 175 END_OF_MSGTYPES_LIST, \ 176 } 177 178 static inline int wait_for_ack(struct nl_sock *sk) 179 { 180 if (sk->s_flags & NL_NO_AUTO_ACK) 181 return 0; 182 else 183 return nl_wait_for_ack(sk); 184 } 185 186 #endif 187
