diff options
Diffstat (limited to 'drivers/net/wireless/libertas/debugfs.c')
-rw-r--r-- | drivers/net/wireless/libertas/debugfs.c | 282 |
1 files changed, 131 insertions, 151 deletions
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c index 44be3929c027..fd67b770dd78 100644 --- a/drivers/net/wireless/libertas/debugfs.c +++ b/drivers/net/wireless/libertas/debugfs.c @@ -347,20 +347,19 @@ static ssize_t lbs_setuserscan(struct file *file, * and returns a pointer to the first data byte of the TLV, or to NULL * if the TLV hasn't been found. */ -static void *lbs_tlv_find(u16 tlv_type, const u8 *tlv, u16 size) +static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size) { - __le16 le_type = cpu_to_le16(tlv_type); - ssize_t pos = 0; struct mrvlietypesheader *tlv_h; + uint16_t length; + ssize_t pos = 0; + while (pos < size) { - u16 length; tlv_h = (struct mrvlietypesheader *) tlv; - if (tlv_h->type == le_type) - return tlv_h; - if (tlv_h->len == 0) + if (!tlv_h->len) return NULL; - length = le16_to_cpu(tlv_h->len) + - sizeof(struct mrvlietypesheader); + if (tlv_h->type == cpu_to_le16(tlv_type)) + return tlv_h; + length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h); pos += length; tlv += length; } @@ -368,100 +367,100 @@ static void *lbs_tlv_find(u16 tlv_type, const u8 *tlv, u16 size) } -/* - * This just gets the bitmap of currently subscribed events. Used when - * adding an additonal event subscription. - */ -static u16 lbs_get_events_bitmap(struct lbs_private *priv) -{ - ssize_t res; - - struct cmd_ds_802_11_subscribe_event *events = kzalloc( - sizeof(struct cmd_ds_802_11_subscribe_event), - GFP_KERNEL); - - res = lbs_prepare_and_send_command(priv, - CMD_802_11_SUBSCRIBE_EVENT, CMD_ACT_GET, - CMD_OPTION_WAITFORRSP, 0, events); - - if (res) { - kfree(events); - return 0; - } - return le16_to_cpu(events->events); -} - - -static ssize_t lbs_threshold_read( - u16 tlv_type, u16 event_mask, - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask, + struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { + struct cmd_ds_802_11_subscribe_event *subscribed; + struct mrvlietypes_thresholds *got; struct lbs_private *priv = file->private_data; - ssize_t res = 0; + ssize_t ret = 0; size_t pos = 0; - unsigned long addr = get_zeroed_page(GFP_KERNEL); - char *buf = (char *)addr; + char *buf; u8 value; u8 freq; int events = 0; - struct cmd_ds_802_11_subscribe_event *subscribed = kzalloc( - sizeof(struct cmd_ds_802_11_subscribe_event), - GFP_KERNEL); - struct mrvlietypes_thresholds *got; + buf = (char *)get_zeroed_page(GFP_KERNEL); + if (!buf) + return -ENOMEM; - res = lbs_prepare_and_send_command(priv, - CMD_802_11_SUBSCRIBE_EVENT, CMD_ACT_GET, - CMD_OPTION_WAITFORRSP, 0, subscribed); - if (res) { - kfree(subscribed); - return res; + subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL); + if (!subscribed) { + ret = -ENOMEM; + goto out_page; } + subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed)); + subscribed->action = cpu_to_le16(CMD_ACT_GET); + + ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed); + if (ret) + goto out_cmd; + got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv)); if (got) { value = got->value; freq = got->freq; events = le16_to_cpu(subscribed->events); - } - kfree(subscribed); - if (got) pos += snprintf(buf, len, "%d %d %d\n", value, freq, - !!(events & event_mask)); + !!(events & event_mask)); + } - res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); + ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); - free_page(addr); - return res; + out_cmd: + kfree(subscribed); + + out_page: + free_page((unsigned long)buf); + return ret; } -static ssize_t lbs_threshold_write( - u16 tlv_type, u16 event_mask, - struct file *file, - const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask, + struct file *file, + const char __user *userbuf, size_t count, + loff_t *ppos) { - struct lbs_private *priv = file->private_data; - ssize_t res, buf_size; - int value, freq, curr_mask, new_mask; - unsigned long addr = get_zeroed_page(GFP_KERNEL); - char *buf = (char *)addr; struct cmd_ds_802_11_subscribe_event *events; + struct mrvlietypes_thresholds *tlv; + struct lbs_private *priv = file->private_data; + ssize_t buf_size; + int value, freq, new_mask; + uint16_t curr_mask; + char *buf; + int ret; + + buf = (char *)get_zeroed_page(GFP_KERNEL); + if (!buf) + return -ENOMEM; buf_size = min(count, len - 1); if (copy_from_user(buf, userbuf, buf_size)) { - res = -EFAULT; - goto out_unlock; + ret = -EFAULT; + goto out_page; } - res = sscanf(buf, "%d %d %d", &value, &freq, &new_mask); - if (res != 3) { - res = -EFAULT; - goto out_unlock; + ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask); + if (ret != 3) { + ret = -EINVAL; + goto out_page; } - curr_mask = lbs_get_events_bitmap(priv); + events = kzalloc(sizeof(*events), GFP_KERNEL); + if (!events) { + ret = -ENOMEM; + goto out_page; + } + + events->hdr.size = cpu_to_le16(sizeof(*events)); + events->action = cpu_to_le16(CMD_ACT_GET); + + ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events); + if (ret) + goto out_events; + + curr_mask = le16_to_cpu(events->events); if (new_mask) new_mask = curr_mask | event_mask; @@ -469,147 +468,128 @@ static ssize_t lbs_threshold_write( new_mask = curr_mask & ~event_mask; /* Now everything is set and we can send stuff down to the firmware */ - events = kzalloc( - sizeof(struct cmd_ds_802_11_subscribe_event), - GFP_KERNEL); - if (events) { - struct mrvlietypes_thresholds *tlv = - (struct mrvlietypes_thresholds *) events->tlv; - events->action = cpu_to_le16(CMD_ACT_SET); - events->events = cpu_to_le16(new_mask); - tlv->header.type = cpu_to_le16(tlv_type); - tlv->header.len = cpu_to_le16( - sizeof(struct mrvlietypes_thresholds) - - sizeof(struct mrvlietypesheader)); - tlv->value = value; - if (tlv_type != TLV_TYPE_BCNMISS) - tlv->freq = freq; - lbs_prepare_and_send_command(priv, - CMD_802_11_SUBSCRIBE_EVENT, CMD_ACT_SET, - CMD_OPTION_WAITFORRSP, 0, events); - kfree(events); - } - res = count; -out_unlock: - free_page(addr); - return res; + tlv = (void *)events->tlv; + + events->action = cpu_to_le16(CMD_ACT_SET); + events->events = cpu_to_le16(new_mask); + tlv->header.type = cpu_to_le16(tlv_type); + tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header)); + tlv->value = value; + if (tlv_type != TLV_TYPE_BCNMISS) + tlv->freq = freq; + + /* The command header, the event mask, and the one TLV */ + events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 2 + sizeof(*tlv)); + + ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events); + + if (!ret) + ret = count; + out_events: + kfree(events); + out_page: + free_page((unsigned long)buf); + return ret; } -static ssize_t lbs_lowrssi_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_lowrssi_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_lowsnr_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_lowsnr_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_failcount_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_failcount_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_highrssi_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_highrssi_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_highsnr_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_highsnr_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_bcnmiss_read( - struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } -static ssize_t lbs_bcnmiss_write( - struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) +static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) { return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS, - file, userbuf, count, ppos); + file, userbuf, count, ppos); } - - - - - static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { |