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- --- a/info.c
- +++ b/info.c
- @@ -156,6 +156,14 @@ static int print_phy_handler(struct nl_m
- printf("\tRTS threshold: %d\n", rts);
- }
-
- + if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
- + unsigned char coverage;
- +
- + coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
- + /* See handle_distance() for an explanation where the '450' comes from */
- + printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage);
- + }
- +
- if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES])
- goto commands;
-
- --- a/phy.c
- +++ b/phy.c
- @@ -164,3 +164,61 @@ static int handle_netns(struct nl80211_s
- COMMAND(set, netns, "<pid>",
- NL80211_CMD_SET_WIPHY_NETNS, 0, CIB_PHY, handle_netns,
- "Put this wireless device into a different network namespace");
- +
- +static int handle_coverage(struct nl80211_state *state,
- + struct nl_cb *cb,
- + struct nl_msg *msg,
- + int argc, char **argv)
- +{
- + unsigned int coverage;
- +
- + if (argc != 1)
- + return 1;
- +
- + coverage = strtoul(argv[0], NULL, 10);
- + if (coverage > 255)
- + return 1;
- +
- + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage);
- +
- + return 0;
- + nla_put_failure:
- + return -ENOBUFS;
- +}
- +COMMAND(set, coverage, "<coverage class>",
- + NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_coverage,
- + "Set coverage class (1 for every 3 usec of air propagation time).\n"
- + "Valid values: 0 - 255.");
- +
- +static int handle_distance(struct nl80211_state *state,
- + struct nl_cb *cb,
- + struct nl_msg *msg,
- + int argc, char **argv)
- +{
- + unsigned int distance, coverage;
- +
- + if (argc != 1)
- + return 1;
- +
- + distance = strtoul(argv[0], NULL, 10);
- +
- + /*
- + * Divide double the distance by the speed of light in m/usec (300) to
- + * get round-trip time in microseconds and then divide the result by
- + * three to get coverage class as specified in IEEE 802.11-2007 table
- + * 7-27. Values are rounded upwards.
- + */
- + coverage = (distance + 449) / 450;
- + if (coverage > 255)
- + return 1;
- +
- + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage);
- +
- + return 0;
- + nla_put_failure:
- + return -ENOBUFS;
- +}
- +COMMAND(set, distance, "<distance>",
- + NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_distance,
- + "Set appropriate coverage class for given link distance in meters.\n"
- + "Valid values: 0 - 114750");
|
