ps.c

   1 #include <errno.h>
   2 #include <string.h>
   3
   4 #include <netlink/genl/genl.h>
   5 #include <netlink/msg.h>
   6 #include <netlink/attr.h>
   7
   8 #include "nl80211.h"
   9 #include "iw.h"
  10
  11 static int set_power_save(struct nl80211_state *state,
  12                           struct nl_msg *msg,
  13                           int argc, char **argv,
  14                           enum id_input id)
  15 {
  16         enum nl80211_ps_state ps_state;
  17
  18         if (argc != 1)
  19                 return 1;
  20
  21         if (strcmp(argv[0], "on") == 0)
  22                 ps_state = NL80211_PS_ENABLED;
  23         else if (strcmp(argv[0], "off") == 0)
  24                 ps_state = NL80211_PS_DISABLED;
  25         else {
  26                 printf("Invalid parameter: %s\n", argv[0]);
  27                 return 2;
  28         }
  29
  30         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
  31
  32         return 0;
  33
  34  nla_put_failure:
  35         return -ENOBUFS;
  36 }
  37
  38 COMMAND(set, power_save, "<on|off>",
  39         NL80211_CMD_SET_POWER_SAVE, 0, CIB_NETDEV, set_power_save,
  40         "Set power save state to on or off.");
  41
  42 static int print_power_save_handler(struct nl_msg *msg, void *arg)
  43 {
  44         struct nlattr *attrs[NL80211_ATTR_MAX + 1];
  45         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
  46         const char *s;
  47
  48         nla_parse(attrs, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
  49                   genlmsg_attrlen(gnlh, 0), NULL);
  50
  51         if (!attrs[NL80211_ATTR_PS_STATE])
  52                 return NL_SKIP;
  53
  54         switch (nla_get_u32(attrs[NL80211_ATTR_PS_STATE])) {
  55         case NL80211_PS_ENABLED:
  56                 s = "on";
  57                 break;
  58         case NL80211_PS_DISABLED:
  59         default:
  60                 s = "off";
  61                 break;
  62         }
  63
  64         printf("Power save: %s\n", s);
  65
  66         return NL_SKIP;
  67 }
  68
  69 static int get_power_save(struct nl80211_state *state,
  70                           struct nl_msg *msg,
  71                           int argc, char **argv,
  72                           enum id_input id)
  73 {
  74         register_handler(print_power_save_handler, NULL);
  75         return 0;
  76 }
  77
  78 COMMAND(get, power_save, "<param>",
  79         NL80211_CMD_GET_POWER_SAVE, 0, CIB_NETDEV, get_power_save,
  80         "Retrieve power save state.");