datapath/linux/compat/include/linux/net.h

   1 #ifndef __LINUX_NET_WRAPPER_H
   2 #define __LINUX_NET_WRAPPER_H 1
   3
   4 #include_next <linux/net.h>
   5 #include <linux/types.h>
   6
   7 #ifndef net_ratelimited_function
   8 #define net_ratelimited_function(function, ...)                 \
   9 do {                                                            \
  10         if (net_ratelimit())                                    \
  11                 function(__VA_ARGS__);                          \
  12 } while (0)
  13
  14 #define net_emerg_ratelimited(fmt, ...)                         \
  15         net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__)
  16 #define net_alert_ratelimited(fmt, ...)                         \
  17         net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__)
  18 #define net_crit_ratelimited(fmt, ...)                          \
  19         net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__)
  20 #define net_err_ratelimited(fmt, ...)                           \
  21         net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__)
  22 #define net_notice_ratelimited(fmt, ...)                        \
  23         net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__)
  24 #define net_warn_ratelimited(fmt, ...)                          \
  25         net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
  26 #define net_info_ratelimited(fmt, ...)                          \
  27         net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
  28 #define net_dbg_ratelimited(fmt, ...)                           \
  29         net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)
  30 #endif
  31
  32 #ifndef net_get_random_once
  33 #define __net_get_random_once rpl___net_get_random_once
  34 bool rpl___net_get_random_once(void *buf, int nbytes, bool *done,
  35                            atomic_t *done_key);
  36
  37 #define ___NET_RANDOM_STATIC_KEY_INIT   ATOMIC_INIT(0)
  38
  39
  40 #define net_get_random_once(buf, nbytes)                        \
  41 ({                                                              \
  42         bool ___ret = false;                                    \
  43         static bool ___done = false;                            \
  44         static atomic_t ___done_key =                           \
  45                         ___NET_RANDOM_STATIC_KEY_INIT;          \
  46         if (!atomic_read(&___done_key))                         \
  47                 ___ret = __net_get_random_once(buf,             \
  48                                                nbytes,          \
  49                                                &___done,        \
  50                                                &___done_key);   \
  51         ___ret;                                                 \
  52 })
  53 #endif
  54
  55 #endif