| 1 | --- a/info.c |
| 2 | +++ b/info.c |
| 3 | @@ -156,6 +156,14 @@ static int print_phy_handler(struct nl_m |
| 4 | printf("\tRTS threshold: %d\n", rts); |
| 5 | } |
| 6 | |
| 7 | + if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { |
| 8 | + unsigned char coverage; |
| 9 | + |
| 10 | + coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); |
| 11 | + /* See handle_distance() for an explanation where the '450' comes from */ |
| 12 | + printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage); |
| 13 | + } |
| 14 | + |
| 15 | if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES]) |
| 16 | goto commands; |
| 17 | |
| 18 | --- a/phy.c |
| 19 | +++ b/phy.c |
| 20 | @@ -164,3 +164,61 @@ static int handle_netns(struct nl80211_s |
| 21 | COMMAND(set, netns, "<pid>", |
| 22 | NL80211_CMD_SET_WIPHY_NETNS, 0, CIB_PHY, handle_netns, |
| 23 | "Put this wireless device into a different network namespace"); |
| 24 | + |
| 25 | +static int handle_coverage(struct nl80211_state *state, |
| 26 | + struct nl_cb *cb, |
| 27 | + struct nl_msg *msg, |
| 28 | + int argc, char **argv) |
| 29 | +{ |
| 30 | + unsigned int coverage; |
| 31 | + |
| 32 | + if (argc != 1) |
| 33 | + return 1; |
| 34 | + |
| 35 | + coverage = strtoul(argv[0], NULL, 10); |
| 36 | + if (coverage > 255) |
| 37 | + return 1; |
| 38 | + |
| 39 | + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage); |
| 40 | + |
| 41 | + return 0; |
| 42 | + nla_put_failure: |
| 43 | + return -ENOBUFS; |
| 44 | +} |
| 45 | +COMMAND(set, coverage, "<coverage class>", |
| 46 | + NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_coverage, |
| 47 | + "Set coverage class (1 for every 3 usec of air propagation time).\n" |
| 48 | + "Valid values: 0 - 255."); |
| 49 | + |
| 50 | +static int handle_distance(struct nl80211_state *state, |
| 51 | + struct nl_cb *cb, |
| 52 | + struct nl_msg *msg, |
| 53 | + int argc, char **argv) |
| 54 | +{ |
| 55 | + unsigned int distance, coverage; |
| 56 | + |
| 57 | + if (argc != 1) |
| 58 | + return 1; |
| 59 | + |
| 60 | + distance = strtoul(argv[0], NULL, 10); |
| 61 | + |
| 62 | + /* |
| 63 | + * Divide double the distance by the speed of light in m/usec (300) to |
| 64 | + * get round-trip time in microseconds and then divide the result by |
| 65 | + * three to get coverage class as specified in IEEE 802.11-2007 table |
| 66 | + * 7-27. Values are rounded upwards. |
| 67 | + */ |
| 68 | + coverage = (distance + 449) / 450; |
| 69 | + if (coverage > 255) |
| 70 | + return 1; |
| 71 | + |
| 72 | + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage); |
| 73 | + |
| 74 | + return 0; |
| 75 | + nla_put_failure: |
| 76 | + return -ENOBUFS; |
| 77 | +} |
| 78 | +COMMAND(set, distance, "<distance>", |
| 79 | + NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_distance, |
| 80 | + "Set appropriate coverage class for given link distance in meters.\n" |
| 81 | + "Valid values: 0 - 114750"); |
| 82 | |
