From ca25f76e8210aaa553b499daa46d13ea060eb6d8 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 27 Sep 2014 21:19:27 +0000 Subject: [PATCH] iw: add support for dynamic distance selection (supported by ath9k now) Signed-off-by: Felix Fietkau SVN-Revision: 42689 --- .../network/utils/iw/patches/010-dynack.patch | 94 +++++++++++++++++++ .../utils/iw/patches/120-antenna_gain.patch | 2 +- .../utils/iw/patches/200-reduce_size.patch | 10 +- 3 files changed, 100 insertions(+), 6 deletions(-) create mode 100644 package/network/utils/iw/patches/010-dynack.patch diff --git a/package/network/utils/iw/patches/010-dynack.patch b/package/network/utils/iw/patches/010-dynack.patch new file mode 100644 index 000000000000..00e4bf2467fb --- /dev/null +++ b/package/network/utils/iw/patches/010-dynack.patch @@ -0,0 +1,94 @@ + + +Add auto parameter to set distance command in order to enable ACK timeout +estimation algorithm (dynack). Dynack is automatically disabled setting valid +value for coverage class. Currently dynack is supported just by ath9k + +This patch is based on "configure dynack through mac80211/cfg80211 stack" +patchset sent on linux-wireless + +Signed-off-by: Lorenzo Bianconi +--- + info.c | 2 ++ + nl80211.h | 12 ++++++++++++ + phy.c | 43 +++++++++++++++++++++++++------------------ + 3 files changed, 39 insertions(+), 18 deletions(-) + +--- a/info.c ++++ b/info.c +@@ -551,6 +551,8 @@ broken_combination: + printf("\tDevice supports scan flush.\n"); + if (features & NL80211_FEATURE_AP_SCAN) + printf("\tDevice supports AP scan.\n"); ++ if (features & NL80211_FEATURE_ACKTO_ESTIMATION) ++ printf("\tDevice supports ACK timeout estimation.\n"); + } + + if (tb_msg[NL80211_ATTR_TDLS_SUPPORT]) +--- a/phy.c ++++ b/phy.c +@@ -362,39 +362,46 @@ static int handle_distance(struct nl8021 + int argc, char **argv, + enum id_input id) + { +- char *end; +- unsigned int distance, coverage; +- + if (argc != 1) + return 1; + + if (!*argv[0]) + return 1; + +- distance = strtoul(argv[0], &end, 10); ++ if (strcmp("auto", argv[0]) == 0) { ++ NLA_PUT_FLAG(msg, NL80211_ATTR_WIPHY_DYN_ACK); ++ } else { ++ char *end; ++ unsigned int distance, coverage; + +- if (*end) +- return 1; ++ distance = strtoul(argv[0], &end, 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; ++ if (*end) ++ return 1; ++ ++ /* ++ * 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); ++ NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage); ++ } + + return 0; + nla_put_failure: + return -ENOBUFS; + } +-COMMAND(set, distance, "", ++COMMAND(set, distance, "", + NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_distance, +- "Set appropriate coverage class for given link distance in meters.\n" ++ "Enable ACK timeout estimation algorithm (dynack) or set appropriate\n" ++ "coverage class for given link distance in meters.\n" ++ "To disable dynack set valid value for coverage class.\n" + "Valid values: 0 - 114750"); + + static int handle_txpower(struct nl80211_state *state, diff --git a/package/network/utils/iw/patches/120-antenna_gain.patch b/package/network/utils/iw/patches/120-antenna_gain.patch index 2c11a150dee3..cf6a3fa22166 100644 --- a/package/network/utils/iw/patches/120-antenna_gain.patch +++ b/package/network/utils/iw/patches/120-antenna_gain.patch @@ -1,6 +1,6 @@ --- a/phy.c +++ b/phy.c -@@ -488,3 +488,31 @@ COMMAND(set, antenna, " | all | +@@ -495,3 +495,31 @@ COMMAND(set, antenna, " | all | NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_antenna, "Set a bitmap of allowed antennas to use for TX and RX.\n" "The driver may reject antenna configurations it cannot support."); diff --git a/package/network/utils/iw/patches/200-reduce_size.patch b/package/network/utils/iw/patches/200-reduce_size.patch index 8f5c0eb76d18..a6499b301708 100644 --- a/package/network/utils/iw/patches/200-reduce_size.patch +++ b/package/network/utils/iw/patches/200-reduce_size.patch @@ -83,15 +83,15 @@ if (tb_msg[NL80211_ATTR_FEATURE_FLAGS]) { unsigned int features = nla_get_u32(tb_msg[NL80211_ATTR_FEATURE_FLAGS]); -@@ -552,6 +561,7 @@ broken_combination: - if (features & NL80211_FEATURE_AP_SCAN) - printf("\tDevice supports AP scan.\n"); +@@ -554,6 +563,7 @@ broken_combination: + if (features & NL80211_FEATURE_ACKTO_ESTIMATION) + printf("\tDevice supports ACK timeout estimation.\n"); } +#endif if (tb_msg[NL80211_ATTR_TDLS_SUPPORT]) printf("\tDevice supports T-DLS.\n"); -@@ -601,6 +611,7 @@ TOPLEVEL(list, NULL, NL80211_CMD_GET_WIP +@@ -603,6 +613,7 @@ TOPLEVEL(list, NULL, NL80211_CMD_GET_WIP "List all wireless devices and their capabilities."); TOPLEVEL(phy, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info, NULL); @@ -99,7 +99,7 @@ static int handle_commands(struct nl80211_state *state, struct nl_cb *cb, struct nl_msg *msg, int argc, char **argv, enum id_input id) -@@ -613,6 +624,7 @@ static int handle_commands(struct nl8021 +@@ -615,6 +626,7 @@ static int handle_commands(struct nl8021 } TOPLEVEL(commands, NULL, NL80211_CMD_GET_WIPHY, 0, CIB_NONE, handle_commands, "list all known commands and their decimal & hex value"); -- 2.30.2