[v5,1/3] mwifiex: refactor device dump code to make it generic for usb interface

Message ID	1513064293-9400-1-git-send-email-huxm@marvell.com (mailing list archive)
State	Accepted
Commit	d0e2b44ef32814bdde8aaed307d1ae663fcf251c
Delegated to:	Kalle Valo
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: Xinming Hu <huxm@marvell.com> To: Linux Wireless <linux-wireless@vger.kernel.org> CC: Kalle Valo <kvalo@codeaurora.org>, Brian Norris <briannorris@chromium.org>, Dmitry Torokhov <dtor@google.com>, <rajatja@google.com>, Zhiyuan Yang <yangzy@marvell.com>, Tim Song <songtao@marvell.com>, Cathy Luo <cluo@marvell.com>, James Cao <jcao@marvell.com>, Ganapathi Bhat <gbhat@marvell.com>, Ellie Reeves <ellierevves@gmail.com>, Xinming Hu <huxm@marvell.com> Subject: [PATCH v5 1/3] mwifiex: refactor device dump code to make it generic for usb interface Date: Tue, 12 Dec 2017 15:38:11 +0800 Message-ID: <1513064293-9400-1-git-send-email-huxm@marvell.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c index e1aa860..b0d3d68 100644 --- a/drivers/net/wireless/marvell/mwifiex/init.c +++ b/drivers/net/wireless/marvell/mwifiex/init.c @@ -314,6 +314,7 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; adapter->active_scan_triggered = false; timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); + adapter->devdump_len = 0; } /* diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index a96bd7e..12e7399 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -1051,9 +1051,30 @@ void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) } EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); -int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info) +void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter) { - void *p; + /* Dump all the memory data into single file, a userspace script will + * be used to split all the memory data to multiple files + */ + mwifiex_dbg(adapter, MSG, + "== mwifiex dump information to /sys/class/devcoredump start\n"); + dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len, + GFP_KERNEL); + mwifiex_dbg(adapter, MSG, + "== mwifiex dump information to /sys/class/devcoredump end\n"); + + /* Device dump data will be freed in device coredump release function + * after 5 min. Here reset adapter->devdump_data and ->devdump_len + * to avoid it been accidentally reused. + */ + adapter->devdump_data = NULL; + adapter->devdump_len = 0; +} +EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); + +void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) +{ + char *p; char drv_version[64]; struct usb_card_rec *cardp; struct sdio_mmc_card *sdio_card; @@ -1061,17 +1082,12 @@ int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info) int i, idx; struct netdev_queue *txq; struct mwifiex_debug_info *debug_info; - void *drv_info_dump; mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n"); - /* memory allocate here should be free in mwifiex_upload_device_dump*/ - drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX); - - if (!drv_info_dump) - return 0; - - p = (char *)(drv_info_dump); + p = adapter->devdump_data; + strcpy(p, "========Start dump driverinfo========\n"); + p += strlen("========Start dump driverinfo========\n"); p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); mwifiex_drv_get_driver_version(adapter, drv_version, @@ -1155,21 +1171,18 @@ int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info) kfree(debug_info); } + strcpy(p, "\n========End dump========\n"); + p += strlen("\n========End dump========\n"); mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n"); - *drv_info = drv_info_dump; - return p - drv_info_dump; + adapter->devdump_len = p - (char *)adapter->devdump_data; } EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump); -void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info, - int drv_info_size) +void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter) { - u8 idx, *dump_data, *fw_dump_ptr; - u32 dump_len; - - dump_len = (strlen("========Start dump driverinfo========\n") + - drv_info_size + - strlen("\n========End dump========\n")); + u8 idx; + char *fw_dump_ptr; + u32 dump_len = 0; for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = @@ -1184,24 +1197,24 @@ void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info, } } - dump_data = vzalloc(dump_len + 1); - if (!dump_data) - goto done; - - fw_dump_ptr = dump_data; + if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) { + /* Realloc in case buffer overflow */ + fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len); + mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n"); + if (!fw_dump_ptr) { + vfree(adapter->devdump_data); + mwifiex_dbg(adapter, ERROR, + "vzalloc devdump data failure!\n"); + return; + } - /* Dump all the memory data into single file, a userspace script will - * be used to split all the memory data to multiple files - */ - mwifiex_dbg(adapter, MSG, - "== mwifiex dump information to /sys/class/devcoredump start"); + memmove(fw_dump_ptr, adapter->devdump_data, + adapter->devdump_len); + vfree(adapter->devdump_data); + adapter->devdump_data = fw_dump_ptr; + } - strcpy(fw_dump_ptr, "========Start dump driverinfo========\n"); - fw_dump_ptr += strlen("========Start dump driverinfo========\n"); - memcpy(fw_dump_ptr, drv_info, drv_info_size); - fw_dump_ptr += drv_info_size; - strcpy(fw_dump_ptr, "\n========End dump========\n"); - fw_dump_ptr += strlen("\n========End dump========\n"); + fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len; for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = @@ -1225,14 +1238,8 @@ void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info, } } - /* device dump data will be free in device coredump release function - * after 5 min - */ - dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL); - mwifiex_dbg(adapter, MSG, - "== mwifiex dump information to /sys/class/devcoredump end"); + adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data; -done: for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = &adapter->mem_type_mapping_tbl[idx]; @@ -1241,10 +1248,8 @@ void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info, entry->mem_ptr = NULL; entry->mem_size = 0; } - - vfree(drv_info); } -EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); +EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info); /* * CFG802.11 network device handler for statistics retrieval. diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h index 154c079..8b6241a 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.h +++ b/drivers/net/wireless/marvell/mwifiex/main.h @@ -94,6 +94,8 @@ enum { #define MAX_EVENT_SIZE 2048 +#define MWIFIEX_FW_DUMP_SIZE (2 * 1024 * 1024) + #define ARP_FILTER_MAX_BUF_SIZE 68 #define MWIFIEX_KEY_BUFFER_SIZE 16 @@ -1032,6 +1034,9 @@ struct mwifiex_adapter { bool wake_by_wifi; /* Aggregation parameters*/ struct bus_aggr_params bus_aggr; + /* Device dump data/length */ + void *devdump_data; + int devdump_len; }; void mwifiex_process_tx_queue(struct mwifiex_adapter *adapter); @@ -1656,9 +1661,9 @@ void mwifiex_hist_data_add(struct mwifiex_private *priv, u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv, u8 rx_rate, u8 ht_info); -int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info); -void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info, - int drv_info_size); +void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter); +void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter); +void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter); void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags); void mwifiex_queue_main_work(struct mwifiex_adapter *adapter); int mwifiex_get_wakeup_reason(struct mwifiex_private *priv, u16 action, diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index cd31494..f666cb2 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -2769,12 +2769,17 @@ static void mwifiex_pcie_fw_dump(struct mwifiex_adapter *adapter) static void mwifiex_pcie_device_dump_work(struct mwifiex_adapter *adapter) { - int drv_info_size; - void *drv_info; + adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE); + if (!adapter->devdump_data) { + mwifiex_dbg(adapter, ERROR, + "vzalloc devdump data failure!\n"); + return; + } - drv_info_size = mwifiex_drv_info_dump(adapter, &drv_info); + mwifiex_drv_info_dump(adapter); mwifiex_pcie_fw_dump(adapter); - mwifiex_upload_device_dump(adapter, drv_info, drv_info_size); + mwifiex_prepare_fw_dump_info(adapter); + mwifiex_upload_device_dump(adapter); } static void mwifiex_pcie_card_reset_work(struct mwifiex_adapter *adapter) diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index fd5183c..a828801 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2505,15 +2505,21 @@ static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter) static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) { struct sdio_mmc_card *card = adapter->card; - int drv_info_size; - void *drv_info; - drv_info_size = mwifiex_drv_info_dump(adapter, &drv_info); + adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE); + if (!adapter->devdump_data) { + mwifiex_dbg(adapter, ERROR, + "vzalloc devdump data failure!\n"); + return; + } + + mwifiex_drv_info_dump(adapter); if (card->fw_dump_enh) mwifiex_sdio_generic_fw_dump(adapter); else mwifiex_sdio_fw_dump(adapter); - mwifiex_upload_device_dump(adapter, drv_info, drv_info_size); + mwifiex_prepare_fw_dump_info(adapter); + mwifiex_upload_device_dump(adapter); } static void mwifiex_sdio_work(struct work_struct *work)

[v5,1/3] mwifiex: refactor device dump code to make it generic for usb interface

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