From 7e4e5d2cd0817b91eb07c7abe297012bf76616ea Mon Sep 17 00:00:00 2001 From: Zhaoyang Liu Date: Fri, 18 Sep 2015 06:32:17 -0700 Subject: [PATCH] mwifiex: add usb multi endpoints resync support This patch add support for usb multi endpoints resync. Once multi channel event is received from firmware, update usb_mc_setp flag to block TX data until setup is over. And available data endpoint will be attached to BSS interface. Signed-off-by: Zhaoyang Liu Signed-off-by: Cathy Luo Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/mwifiex/main.c | 54 +++++++++++++++++++++++++--- drivers/net/wireless/mwifiex/main.h | 3 ++ drivers/net/wireless/mwifiex/sta_cmdresp.c | 11 ++++++ drivers/net/wireless/mwifiex/sta_event.c | 5 +++ drivers/net/wireless/mwifiex/usb.c | 56 ++++++++++++++++++++++++++++++ drivers/net/wireless/mwifiex/usb.h | 2 ++ 6 files changed, 127 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c index 4b2110d..6e3faa7 100644 --- a/drivers/net/wireless/mwifiex/main.c +++ b/drivers/net/wireless/mwifiex/main.c @@ -294,9 +294,15 @@ process_start: /* We have tried to wakeup the card already */ if (adapter->pm_wakeup_fw_try) break; - if (adapter->ps_state != PS_STATE_AWAKE || - adapter->tx_lock_flag) + if (adapter->ps_state != PS_STATE_AWAKE) break; + if (adapter->tx_lock_flag) { + if (adapter->iface_type == MWIFIEX_USB) { + if (!adapter->usb_mc_setup) + break; + } else + break; + } if ((!adapter->scan_chan_gap_enabled && adapter->scan_processing) || adapter->data_sent || @@ -345,11 +351,18 @@ process_start: */ if ((adapter->ps_state == PS_STATE_SLEEP) || (adapter->ps_state == PS_STATE_PRE_SLEEP) || - (adapter->ps_state == PS_STATE_SLEEP_CFM) || - adapter->tx_lock_flag){ + (adapter->ps_state == PS_STATE_SLEEP_CFM)) { continue; } + if (adapter->tx_lock_flag) { + if (adapter->iface_type == MWIFIEX_USB) { + if (!adapter->usb_mc_setup) + continue; + } else + continue; + } + if (!adapter->cmd_sent && !adapter->curr_cmd && mwifiex_is_send_cmd_allowed (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { @@ -359,6 +372,13 @@ process_start: } } + /** If USB Multi channel setup ongoing, + * wait for ready to tx data. + */ + if (adapter->iface_type == MWIFIEX_USB && + adapter->usb_mc_setup) + continue; + if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && @@ -928,6 +948,32 @@ mwifiex_tx_timeout(struct net_device *dev) } } +void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = adapter->card; + struct mwifiex_private *priv; + u16 tx_buf_size; + int i, ret; + + card->mc_resync_flag = true; + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + if (atomic_read(&card->port[i].tx_data_urb_pending)) { + mwifiex_dbg(adapter, WARN, "pending data urb in sys\n"); + return; + } + } + + card->mc_resync_flag = false; + tx_buf_size = 0xffff; + priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); + ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, + HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false); + if (ret) + mwifiex_dbg(adapter, ERROR, + "send reconfig tx buf size cmd err\n"); +} +EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); + void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) { void *p; diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index 9772a18..8813002 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -816,6 +816,7 @@ struct mwifiex_if_ops { void (*iface_work)(struct work_struct *work); void (*submit_rem_rx_urbs)(struct mwifiex_adapter *adapter); void (*deaggr_pkt)(struct mwifiex_adapter *, struct sk_buff *); + void (*multi_port_resync)(struct mwifiex_adapter *); }; struct mwifiex_adapter { @@ -991,6 +992,7 @@ struct mwifiex_adapter { bool drcs_enabled; u8 active_scan_triggered; bool usb_mc_status; + bool usb_mc_setup; }; void mwifiex_process_tx_queue(struct mwifiex_adapter *adapter); @@ -1564,6 +1566,7 @@ void mwifiex_process_tx_pause_event(struct mwifiex_private *priv, struct sk_buff *event); void mwifiex_process_multi_chan_event(struct mwifiex_private *priv, struct sk_buff *event_skb); +void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter); #ifdef CONFIG_DEBUG_FS void mwifiex_debugfs_init(void); diff --git a/drivers/net/wireless/mwifiex/sta_cmdresp.c b/drivers/net/wireless/mwifiex/sta_cmdresp.c index 87b69d8..d0961635 100644 --- a/drivers/net/wireless/mwifiex/sta_cmdresp.c +++ b/drivers/net/wireless/mwifiex/sta_cmdresp.c @@ -1128,6 +1128,17 @@ int mwifiex_process_sta_cmdresp(struct mwifiex_private *priv, u16 cmdresp_no, ret = mwifiex_ret_11n_addba_resp(priv, resp); break; case HostCmd_CMD_RECONFIGURE_TX_BUFF: + if (0xffff == (u16)le16_to_cpu(resp->params.tx_buf.buff_size)) { + if (adapter->iface_type == MWIFIEX_USB && + adapter->usb_mc_setup) { + if (adapter->if_ops.multi_port_resync) + adapter->if_ops. + multi_port_resync(adapter); + adapter->usb_mc_setup = false; + adapter->tx_lock_flag = false; + } + break; + } adapter->tx_buf_size = (u16) le16_to_cpu(resp->params. tx_buf.buff_size); adapter->tx_buf_size = (adapter->tx_buf_size diff --git a/drivers/net/wireless/mwifiex/sta_event.c b/drivers/net/wireless/mwifiex/sta_event.c index 6792089..c333b24 100644 --- a/drivers/net/wireless/mwifiex/sta_event.c +++ b/drivers/net/wireless/mwifiex/sta_event.c @@ -381,6 +381,11 @@ void mwifiex_process_multi_chan_event(struct mwifiex_private *priv, sizeof(struct mwifiex_ie_types_header)); } + if (adapter->iface_type == MWIFIEX_USB) { + adapter->tx_lock_flag = true; + adapter->usb_mc_setup = true; + mwifiex_multi_chan_resync(adapter); + } } void mwifiex_process_tx_pause_event(struct mwifiex_private *priv, diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c index df7e7df..78ad857 100644 --- a/drivers/net/wireless/mwifiex/usb.c +++ b/drivers/net/wireless/mwifiex/usb.c @@ -290,6 +290,9 @@ static void mwifiex_usb_tx_complete(struct urb *urb) urb->status ? -1 : 0); } + if (card->mc_resync_flag) + mwifiex_multi_chan_resync(adapter); + mwifiex_queue_main_work(adapter); return; @@ -671,6 +674,10 @@ static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) if (!port->tx_data_ep) continue; port->tx_data_ix = 0; + if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) + port->block_status = false; + else + port->block_status = true; for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { port->tx_data_list[j].adapter = adapter; port->tx_data_list[j].ep = port->tx_data_ep; @@ -769,6 +776,53 @@ static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, return ret; } +static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) +{ + struct usb_card_rec *card = adapter->card; + u8 active_port = MWIFIEX_USB_EP_DATA; + struct mwifiex_private *priv = NULL; + int i; + + if (adapter->usb_mc_status) { + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (!priv) + continue; + if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && + !priv->bss_started) || + (priv->bss_role == MWIFIEX_BSS_ROLE_STA && + !priv->media_connected)) + priv->usb_port = MWIFIEX_USB_EP_DATA; + } + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) + card->port[i].block_status = false; + } else { + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (!priv) + continue; + if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && + priv->bss_started) || + (priv->bss_role == MWIFIEX_BSS_ROLE_STA && + priv->media_connected)) { + active_port = priv->usb_port; + break; + } + } + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (priv) + priv->usb_port = active_port; + } + for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { + if (active_port == card->port[i].tx_data_ep) + card->port[i].block_status = false; + else + card->port[i].block_status = true; + } + } +} + /* This function write a command/data packet to card. */ static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, struct sk_buff *skb, @@ -903,6 +957,7 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter) } adapter->usb_mc_status = false; + adapter->usb_mc_setup = false; return 0; } @@ -1133,6 +1188,7 @@ static struct mwifiex_if_ops usb_ops = { .event_complete = mwifiex_usb_cmd_event_complete, .host_to_card = mwifiex_usb_host_to_card, .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, + .multi_port_resync = mwifiex_usb_port_resync, }; /* This function initializes the USB driver module. diff --git a/drivers/net/wireless/mwifiex/usb.h b/drivers/net/wireless/mwifiex/usb.h index 0a756f2..bab10ee 100644 --- a/drivers/net/wireless/mwifiex/usb.h +++ b/drivers/net/wireless/mwifiex/usb.h @@ -67,6 +67,7 @@ struct urb_context { struct usb_tx_data_port { u8 tx_data_ep; + u8 block_status; atomic_t tx_data_urb_pending; int tx_data_ix; struct urb_context tx_data_list[MWIFIEX_TX_DATA_URB]; @@ -87,6 +88,7 @@ struct usb_card_rec { atomic_t tx_cmd_urb_pending; int bulk_out_maxpktsize; struct urb_context tx_cmd; + u8 mc_resync_flag; struct usb_tx_data_port port[MWIFIEX_TX_DATA_PORT]; }; -- 2.7.4