diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/071-rt2x00-clear-IV-s-on-start-to-fix-AP-mode-regression.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/rt2x00/071-rt2x00-clear-IV-s-on-start-to-fix-AP-mode-regression.patch | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/071-rt2x00-clear-IV-s-on-start-to-fix-AP-mode-regression.patch b/package/kernel/mac80211/patches/rt2x00/071-rt2x00-clear-IV-s-on-start-to-fix-AP-mode-regression.patch new file mode 100644 index 0000000000..917204f9ca --- /dev/null +++ b/package/kernel/mac80211/patches/rt2x00/071-rt2x00-clear-IV-s-on-start-to-fix-AP-mode-regression.patch @@ -0,0 +1,102 @@ +From 95844124385eae4bd9ca5f9514a0fc33d561ac3c Mon Sep 17 00:00:00 2001 +From: Stanislaw Gruszka <sgruszka@redhat.com> +Date: Mon, 19 Aug 2019 13:20:07 +0200 +Subject: [PATCH 12/15] rt2x00: clear IV's on start to fix AP mode regression + +To do not brake HW restart we should keep initialization vectors data. +I assumed that on start the data is already initialized to zeros, but +that not true on some scenarios and we should clear it. So add +additional flag to check if we are under HW restart and clear IV's +data if we are not. + +Patch fixes AP mode regression. + +Reported-and-tested-by: Emil Karlson <jekarl@iki.fi> +Fixes: 710e6cc1595e ("rt2800: do not nullify initialization vector data") +Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 9 +++++++++ + drivers/net/wireless/ralink/rt2x00/rt2x00.h | 1 + + drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 13 ++++++++----- + 3 files changed, 18 insertions(+), 5 deletions(-) + +--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +@@ -6106,6 +6106,15 @@ static int rt2800_init_registers(struct + } + + /* ++ * Clear encryption initialization vectors on start, but keep them ++ * for watchdog reset. Otherwise we will have wrong IVs and not be ++ * able to keep connections after reset. ++ */ ++ if (!test_bit(DEVICE_STATE_RESET, &rt2x00dev->flags)) ++ for (i = 0; i < 256; i++) ++ rt2800_register_write(rt2x00dev, MAC_IVEIV_ENTRY(i), 0); ++ ++ /* + * Clear all beacons + */ + for (i = 0; i < 8; i++) +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h +@@ -669,6 +669,7 @@ enum rt2x00_state_flags { + DEVICE_STATE_ENABLED_RADIO, + DEVICE_STATE_SCANNING, + DEVICE_STATE_FLUSHING, ++ DEVICE_STATE_RESET, + + /* + * Driver configuration +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c +@@ -1267,13 +1267,14 @@ static int rt2x00lib_initialize(struct r + + int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) + { +- int retval; ++ int retval = 0; + + if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) { + /* + * This is special case for ieee80211_restart_hw(), otherwise + * mac80211 never call start() two times in row without stop(); + */ ++ set_bit(DEVICE_STATE_RESET, &rt2x00dev->flags); + rt2x00dev->ops->lib->pre_reset_hw(rt2x00dev); + rt2x00lib_stop(rt2x00dev); + } +@@ -1284,14 +1285,14 @@ int rt2x00lib_start(struct rt2x00_dev *r + */ + retval = rt2x00lib_load_firmware(rt2x00dev); + if (retval) +- return retval; ++ goto out; + + /* + * Initialize the device. + */ + retval = rt2x00lib_initialize(rt2x00dev); + if (retval) +- return retval; ++ goto out; + + rt2x00dev->intf_ap_count = 0; + rt2x00dev->intf_sta_count = 0; +@@ -1300,11 +1301,13 @@ int rt2x00lib_start(struct rt2x00_dev *r + /* Enable the radio */ + retval = rt2x00lib_enable_radio(rt2x00dev); + if (retval) +- return retval; ++ goto out; + + set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); + +- return 0; ++out: ++ clear_bit(DEVICE_STATE_RESET, &rt2x00dev->flags); ++ return retval; + } + + void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |