From 9c8928f5176766bec79f272bd47b7124e11cccbd Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Mon, 16 Mar 2015 09:08:07 +0200 Subject: iwlwifi: dvm: run INIT firmware again upon .start() The assumption before this patch was that we don't need to run again the INIT firmware after the system booted. The INIT firmware runs calibrations which impact the physical layer's behavior. Users reported that it may be helpful to run these calibrations again every time the interface is brought up. The penatly is minimal, since the calibrations run fast. This fixes: https://bugzilla.kernel.org/show_bug.cgi?id=94341 CC: Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/dvm/dev.h | 1 - drivers/net/wireless/iwlwifi/dvm/ucode.c | 5 ----- 2 files changed, 6 deletions(-) (limited to 'drivers/net/wireless/iwlwifi') diff --git a/drivers/net/wireless/iwlwifi/dvm/dev.h b/drivers/net/wireless/iwlwifi/dvm/dev.h index a6f22c32a279..3811878ab9cd 100644 --- a/drivers/net/wireless/iwlwifi/dvm/dev.h +++ b/drivers/net/wireless/iwlwifi/dvm/dev.h @@ -708,7 +708,6 @@ struct iwl_priv { unsigned long reload_jiffies; int reload_count; bool ucode_loaded; - bool init_ucode_run; /* Don't run init uCode again */ u8 plcp_delta_threshold; diff --git a/drivers/net/wireless/iwlwifi/dvm/ucode.c b/drivers/net/wireless/iwlwifi/dvm/ucode.c index 4dbef7e58c2e..5244e43bfafb 100644 --- a/drivers/net/wireless/iwlwifi/dvm/ucode.c +++ b/drivers/net/wireless/iwlwifi/dvm/ucode.c @@ -418,9 +418,6 @@ int iwl_run_init_ucode(struct iwl_priv *priv) if (!priv->fw->img[IWL_UCODE_INIT].sec[0].len) return 0; - if (priv->init_ucode_run) - return 0; - iwl_init_notification_wait(&priv->notif_wait, &calib_wait, calib_complete, ARRAY_SIZE(calib_complete), iwlagn_wait_calib, priv); @@ -440,8 +437,6 @@ int iwl_run_init_ucode(struct iwl_priv *priv) */ ret = iwl_wait_notification(&priv->notif_wait, &calib_wait, UCODE_CALIB_TIMEOUT); - if (!ret) - priv->init_ucode_run = true; goto out; -- cgit From dcbc17ad7c7525ed04a45a94cfc5640d5cccf480 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Mar 2015 21:24:34 +0100 Subject: iwlwifi: mvm: protect rate scaling against non-mvm IBSS stations When the driver callback returns that it's out of space for new stations, the mac80211 IBSS code still keeps the station so it doesn't try to add it over and over again. Since the rate scaling algorithm is separate in mac80211, it also invokes the rate scaling algorithm for such stations. It doesn't know that our rate scaling algorithm is tightly integrated with the MVM code and relies on those data structures, and it cannot as the abstraction doesn't allow for it. This leads to crashes when the rate scaling algorithm tries to use uninitialized data, notably the mvmsta->vif pointer. Protect against this in the rate scaling algorithm. We cannot get good rates with such peers anyway since the firmware cannot do anything with them. This should fix https://bugzilla.kernel.org/show_bug.cgi?id=93461 CC: Reported-by: Richard Taylor Signed-off-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/rs.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/iwlwifi') diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c index efa9688a4cf1..078f24cf4af3 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/iwlwifi/mvm/rs.c @@ -1278,6 +1278,9 @@ static void rs_mac80211_tx_status(void *mvm_r, struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + if (!iwl_mvm_sta_from_mac80211(sta)->vif) + return; + if (!ieee80211_is_data(hdr->frame_control) || info->flags & IEEE80211_TX_CTL_NO_ACK) return; @@ -2511,6 +2514,14 @@ static void rs_get_rate(void *mvm_r, struct ieee80211_sta *sta, void *mvm_sta, struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct iwl_lq_sta *lq_sta = mvm_sta; + if (sta && !iwl_mvm_sta_from_mac80211(sta)->vif) { + /* if vif isn't initialized mvm doesn't know about + * this station, so don't do anything with the it + */ + sta = NULL; + mvm_sta = NULL; + } + /* TODO: handle rate_idx_mask and rate_idx_mcs_mask */ /* Treat uninitialized rate scaling data same as non-existing. */ @@ -2827,6 +2838,9 @@ static void rs_rate_update(void *mvm_r, (struct iwl_op_mode *)mvm_r; struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + if (!iwl_mvm_sta_from_mac80211(sta)->vif) + return; + /* Stop any ongoing aggregations as rs starts off assuming no agg */ for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) ieee80211_stop_tx_ba_session(sta, tid); @@ -3587,9 +3601,15 @@ static ssize_t iwl_dbgfs_ss_force_write(struct iwl_lq_sta *lq_sta, char *buf, MVM_DEBUGFS_READ_WRITE_FILE_OPS(ss_force, 32); -static void rs_add_debugfs(void *mvm, void *mvm_sta, struct dentry *dir) +static void rs_add_debugfs(void *mvm, void *priv_sta, struct dentry *dir) { - struct iwl_lq_sta *lq_sta = mvm_sta; + struct iwl_lq_sta *lq_sta = priv_sta; + struct iwl_mvm_sta *mvmsta; + + mvmsta = container_of(lq_sta, struct iwl_mvm_sta, lq_sta); + + if (!mvmsta->vif) + return; debugfs_create_file("rate_scale_table", S_IRUSR | S_IWUSR, dir, lq_sta, &rs_sta_dbgfs_scale_table_ops); -- cgit From 132fee062655e90948e189c8c14ce21f115ebbda Mon Sep 17 00:00:00 2001 From: Oren Givon Date: Thu, 19 Mar 2015 12:46:06 +0200 Subject: iwlwifi: add new 3165 series PCI IDs Add new 3165 PCI IDs for new 1x1 cards. Signed-off-by: Oren Givon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/pcie/drv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/iwlwifi') diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c index dbd6bcf52205..686dd301cd53 100644 --- a/drivers/net/wireless/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/iwlwifi/pcie/drv.c @@ -368,10 +368,12 @@ static const struct pci_device_id iwl_hw_card_ids[] = { /* 3165 Series */ {IWL_PCI_DEVICE(0x3165, 0x4010, iwl3165_2ac_cfg)}, {IWL_PCI_DEVICE(0x3165, 0x4012, iwl3165_2ac_cfg)}, - {IWL_PCI_DEVICE(0x3165, 0x4110, iwl3165_2ac_cfg)}, - {IWL_PCI_DEVICE(0x3165, 0x4210, iwl3165_2ac_cfg)}, {IWL_PCI_DEVICE(0x3165, 0x4410, iwl3165_2ac_cfg)}, {IWL_PCI_DEVICE(0x3165, 0x4510, iwl3165_2ac_cfg)}, + {IWL_PCI_DEVICE(0x3165, 0x4110, iwl3165_2ac_cfg)}, + {IWL_PCI_DEVICE(0x3166, 0x4310, iwl3165_2ac_cfg)}, + {IWL_PCI_DEVICE(0x3166, 0x4210, iwl3165_2ac_cfg)}, + {IWL_PCI_DEVICE(0x3165, 0x8010, iwl3165_2ac_cfg)}, /* 7265 Series */ {IWL_PCI_DEVICE(0x095A, 0x5010, iwl7265_2ac_cfg)}, -- cgit From 1f16ea294d2ef63013740f4c8539e430b6c12dff Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 6 Mar 2015 09:17:37 +0100 Subject: iwlwifi: mvm: remove WARN_ON for invalid BA notification The firmware frequently manages to trigger this, and there's no known driver workaround, so stop warning. Signed-off-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/tx.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/iwlwifi') diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c index 07304e1fd64a..96a05406babf 100644 --- a/drivers/net/wireless/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/iwlwifi/mvm/tx.c @@ -949,8 +949,10 @@ int iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, mvmsta = iwl_mvm_sta_from_mac80211(sta); tid_data = &mvmsta->tid_data[tid]; - if (WARN_ONCE(tid_data->txq_id != scd_flow, "Q %d, tid %d, flow %d", - tid_data->txq_id, tid, scd_flow)) { + if (tid_data->txq_id != scd_flow) { + IWL_ERR(mvm, + "invalid BA notification: Q %d, tid %d, flow %d\n", + tid_data->txq_id, tid, scd_flow); rcu_read_unlock(); return 0; } -- cgit From a71aaf66725e8fc02253a3bbea15d27e656434fe Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Mon, 23 Mar 2015 14:07:57 -0500 Subject: iwlwifi: Fix memory leak in iwl_req_fw_callback() In this routine, kzalloc allocates a memory block. This allocation is freed in the error paths, but not in the normal exit, thus the allocation is leaked. The kmemleak facility was used to find the leak. Signed-off-by: Larry Finger Cc: Johannes Berg Cc: Emmanuel Grumbach Cc: Intel Linux Wireless --- drivers/net/wireless/iwlwifi/iwl-drv.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/iwlwifi') diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c index 996e7f16adf9..c7154ac42c8c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -1257,6 +1257,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context) op->name, err); #endif } + kfree(pieces); return; try_again: -- cgit