507 lines
13 KiB
C
507 lines
13 KiB
C
/**
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* This file contains the handling of command
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* responses as well as events generated by firmware.
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*/
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <asm/unaligned.h>
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#include <net/cfg80211.h>
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#include "cfg.h"
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#include "cmd.h"
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/**
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* @brief This function handles disconnect event. it
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* reports disconnect to upper layer, clean tx/rx packets,
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* reset link state etc.
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*
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* @param priv A pointer to struct lbs_private structure
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* @return n/a
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*/
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void lbs_mac_event_disconnected(struct lbs_private *priv)
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{
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if (priv->connect_status != LBS_CONNECTED)
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return;
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lbs_deb_enter(LBS_DEB_ASSOC);
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/*
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* Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
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* It causes problem in the Supplicant
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*/
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msleep_interruptible(1000);
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if (priv->wdev->iftype == NL80211_IFTYPE_STATION)
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lbs_send_disconnect_notification(priv);
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/* report disconnect to upper layer */
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netif_stop_queue(priv->dev);
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netif_carrier_off(priv->dev);
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/* Free Tx and Rx packets */
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kfree_skb(priv->currenttxskb);
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priv->currenttxskb = NULL;
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priv->tx_pending_len = 0;
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priv->connect_status = LBS_DISCONNECTED;
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if (priv->psstate != PS_STATE_FULL_POWER) {
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/* make firmware to exit PS mode */
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lbs_deb_cmd("disconnected, so exit PS mode\n");
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lbs_ps_wakeup(priv, 0);
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}
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lbs_deb_leave(LBS_DEB_ASSOC);
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}
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static int lbs_ret_reg_access(struct lbs_private *priv,
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u16 type, struct cmd_ds_command *resp)
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{
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int ret = 0;
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lbs_deb_enter(LBS_DEB_CMD);
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switch (type) {
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case CMD_RET(CMD_MAC_REG_ACCESS):
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{
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struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
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priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
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priv->offsetvalue.value = le32_to_cpu(reg->value);
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break;
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}
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case CMD_RET(CMD_BBP_REG_ACCESS):
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{
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struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
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priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
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priv->offsetvalue.value = reg->value;
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break;
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}
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case CMD_RET(CMD_RF_REG_ACCESS):
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{
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struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
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priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
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priv->offsetvalue.value = reg->value;
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break;
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}
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default:
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ret = -1;
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}
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lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
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return ret;
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}
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/**
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* @brief This function parses countryinfo from AP and download country info to FW
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* @param priv pointer to struct lbs_private
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* @param resp pointer to command response buffer
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* @return 0; -1
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*/
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static int lbs_ret_802_11d_domain_info(struct cmd_ds_command *resp)
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{
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struct cmd_ds_802_11d_domain_info *domaininfo =
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&resp->params.domaininforesp;
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struct mrvl_ie_domain_param_set *domain = &domaininfo->domain;
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u16 action = le16_to_cpu(domaininfo->action);
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s16 ret = 0;
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u8 nr_triplet = 0;
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lbs_deb_enter(LBS_DEB_11D);
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lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
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(int)le16_to_cpu(resp->size));
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nr_triplet = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
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sizeof(struct ieee80211_country_ie_triplet);
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lbs_deb_11d("domain info resp: nr_triplet %d\n", nr_triplet);
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if (nr_triplet > MRVDRV_MAX_TRIPLET_802_11D) {
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lbs_deb_11d("invalid number of triplets returned!!\n");
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return -1;
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}
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switch (action) {
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case CMD_ACT_SET: /*Proc set action */
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break;
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case CMD_ACT_GET:
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break;
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default:
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lbs_deb_11d("invalid action:%d\n", domaininfo->action);
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ret = -1;
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break;
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}
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lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
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return ret;
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}
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static inline int handle_cmd_response(struct lbs_private *priv,
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struct cmd_header *cmd_response)
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{
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struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
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int ret = 0;
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unsigned long flags;
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uint16_t respcmd = le16_to_cpu(resp->command);
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lbs_deb_enter(LBS_DEB_HOST);
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switch (respcmd) {
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case CMD_RET(CMD_MAC_REG_ACCESS):
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case CMD_RET(CMD_BBP_REG_ACCESS):
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case CMD_RET(CMD_RF_REG_ACCESS):
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ret = lbs_ret_reg_access(priv, respcmd, resp);
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break;
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case CMD_RET(CMD_802_11_SET_AFC):
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case CMD_RET(CMD_802_11_GET_AFC):
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spin_lock_irqsave(&priv->driver_lock, flags);
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memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
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sizeof(struct cmd_ds_802_11_afc));
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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break;
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case CMD_RET(CMD_802_11_BEACON_STOP):
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break;
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case CMD_RET(CMD_802_11_RSSI):
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ret = lbs_ret_802_11_rssi(priv, resp);
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break;
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case CMD_RET(CMD_802_11D_DOMAIN_INFO):
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ret = lbs_ret_802_11d_domain_info(resp);
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break;
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case CMD_RET(CMD_802_11_TPC_CFG):
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spin_lock_irqsave(&priv->driver_lock, flags);
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memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
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sizeof(struct cmd_ds_802_11_tpc_cfg));
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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break;
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case CMD_RET(CMD_BT_ACCESS):
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spin_lock_irqsave(&priv->driver_lock, flags);
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if (priv->cur_cmd->callback_arg)
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memcpy((void *)priv->cur_cmd->callback_arg,
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&resp->params.bt.addr1, 2 * ETH_ALEN);
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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break;
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case CMD_RET(CMD_FWT_ACCESS):
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spin_lock_irqsave(&priv->driver_lock, flags);
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if (priv->cur_cmd->callback_arg)
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memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
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sizeof(resp->params.fwt));
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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break;
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case CMD_RET(CMD_802_11_BEACON_CTRL):
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ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
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break;
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default:
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lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
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le16_to_cpu(resp->command));
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break;
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}
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lbs_deb_leave(LBS_DEB_HOST);
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return ret;
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}
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int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
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{
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uint16_t respcmd, curcmd;
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struct cmd_header *resp;
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int ret = 0;
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unsigned long flags;
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uint16_t result;
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lbs_deb_enter(LBS_DEB_HOST);
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mutex_lock(&priv->lock);
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spin_lock_irqsave(&priv->driver_lock, flags);
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if (!priv->cur_cmd) {
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lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
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ret = -1;
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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goto done;
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}
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resp = (void *)data;
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curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
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respcmd = le16_to_cpu(resp->command);
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result = le16_to_cpu(resp->result);
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lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
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respcmd, le16_to_cpu(resp->seqnum), len);
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lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
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if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
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lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
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le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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ret = -1;
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goto done;
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}
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if (respcmd != CMD_RET(curcmd) &&
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respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
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lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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ret = -1;
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goto done;
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}
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if (resp->result == cpu_to_le16(0x0004)) {
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/* 0x0004 means -EAGAIN. Drop the response, let it time out
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and be resubmitted */
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lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
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le16_to_cpu(resp->command));
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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ret = -1;
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goto done;
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}
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/* Now we got response from FW, cancel the command timer */
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del_timer(&priv->command_timer);
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priv->cmd_timed_out = 0;
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/* Store the response code to cur_cmd_retcode. */
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priv->cur_cmd_retcode = result;
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if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
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struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
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u16 action = le16_to_cpu(psmode->action);
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lbs_deb_host(
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"CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
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result, action);
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if (result) {
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lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
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result);
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/*
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* We should not re-try enter-ps command in
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* ad-hoc mode. It takes place in
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* lbs_execute_next_command().
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*/
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if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR &&
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action == CMD_SUBCMD_ENTER_PS)
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priv->psmode = LBS802_11POWERMODECAM;
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} else if (action == CMD_SUBCMD_ENTER_PS) {
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priv->needtowakeup = 0;
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priv->psstate = PS_STATE_AWAKE;
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lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
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if (priv->connect_status != LBS_CONNECTED) {
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/*
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* When Deauth Event received before Enter_PS command
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* response, We need to wake up the firmware.
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*/
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lbs_deb_host(
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"disconnected, invoking lbs_ps_wakeup\n");
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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mutex_unlock(&priv->lock);
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lbs_ps_wakeup(priv, 0);
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mutex_lock(&priv->lock);
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spin_lock_irqsave(&priv->driver_lock, flags);
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}
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} else if (action == CMD_SUBCMD_EXIT_PS) {
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priv->needtowakeup = 0;
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priv->psstate = PS_STATE_FULL_POWER;
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lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
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} else {
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lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
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}
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lbs_complete_command(priv, priv->cur_cmd, result);
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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ret = 0;
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goto done;
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}
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/* If the command is not successful, cleanup and return failure */
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if ((result != 0 || !(respcmd & 0x8000))) {
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lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
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result, respcmd);
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/*
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* Handling errors here
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*/
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switch (respcmd) {
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case CMD_RET(CMD_GET_HW_SPEC):
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case CMD_RET(CMD_802_11_RESET):
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lbs_deb_host("CMD_RESP: reset failed\n");
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break;
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}
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lbs_complete_command(priv, priv->cur_cmd, result);
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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ret = -1;
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goto done;
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}
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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if (priv->cur_cmd && priv->cur_cmd->callback) {
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ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
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resp);
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} else
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ret = handle_cmd_response(priv, resp);
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spin_lock_irqsave(&priv->driver_lock, flags);
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if (priv->cur_cmd) {
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/* Clean up and Put current command back to cmdfreeq */
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lbs_complete_command(priv, priv->cur_cmd, result);
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}
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spin_unlock_irqrestore(&priv->driver_lock, flags);
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done:
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mutex_unlock(&priv->lock);
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lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
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return ret;
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}
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int lbs_process_event(struct lbs_private *priv, u32 event)
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{
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int ret = 0;
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struct cmd_header cmd;
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lbs_deb_enter(LBS_DEB_CMD);
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switch (event) {
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case MACREG_INT_CODE_LINK_SENSED:
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lbs_deb_cmd("EVENT: link sensed\n");
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break;
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case MACREG_INT_CODE_DEAUTHENTICATED:
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lbs_deb_cmd("EVENT: deauthenticated\n");
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lbs_mac_event_disconnected(priv);
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break;
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case MACREG_INT_CODE_DISASSOCIATED:
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lbs_deb_cmd("EVENT: disassociated\n");
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lbs_mac_event_disconnected(priv);
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break;
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case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
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lbs_deb_cmd("EVENT: link lost\n");
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lbs_mac_event_disconnected(priv);
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break;
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case MACREG_INT_CODE_PS_SLEEP:
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lbs_deb_cmd("EVENT: ps sleep\n");
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/* handle unexpected PS SLEEP event */
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if (priv->psstate == PS_STATE_FULL_POWER) {
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lbs_deb_cmd(
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"EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
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break;
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}
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priv->psstate = PS_STATE_PRE_SLEEP;
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lbs_ps_confirm_sleep(priv);
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break;
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case MACREG_INT_CODE_HOST_AWAKE:
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lbs_deb_cmd("EVENT: host awake\n");
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if (priv->reset_deep_sleep_wakeup)
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priv->reset_deep_sleep_wakeup(priv);
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priv->is_deep_sleep = 0;
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lbs_cmd_async(priv, CMD_802_11_WAKEUP_CONFIRM, &cmd,
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sizeof(cmd));
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priv->is_host_sleep_activated = 0;
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wake_up_interruptible(&priv->host_sleep_q);
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break;
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case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
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if (priv->reset_deep_sleep_wakeup)
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priv->reset_deep_sleep_wakeup(priv);
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lbs_deb_cmd("EVENT: ds awake\n");
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priv->is_deep_sleep = 0;
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priv->wakeup_dev_required = 0;
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wake_up_interruptible(&priv->ds_awake_q);
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break;
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case MACREG_INT_CODE_PS_AWAKE:
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lbs_deb_cmd("EVENT: ps awake\n");
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/* handle unexpected PS AWAKE event */
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if (priv->psstate == PS_STATE_FULL_POWER) {
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lbs_deb_cmd(
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"EVENT: In FULL POWER mode - ignore PS AWAKE\n");
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break;
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}
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priv->psstate = PS_STATE_AWAKE;
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if (priv->needtowakeup) {
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/*
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* wait for the command processing to finish
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* before resuming sending
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* priv->needtowakeup will be set to FALSE
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* in lbs_ps_wakeup()
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*/
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lbs_deb_cmd("waking up ...\n");
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lbs_ps_wakeup(priv, 0);
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}
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break;
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case MACREG_INT_CODE_MIC_ERR_UNICAST:
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lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
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lbs_send_mic_failureevent(priv, event);
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break;
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case MACREG_INT_CODE_MIC_ERR_MULTICAST:
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lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
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lbs_send_mic_failureevent(priv, event);
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break;
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case MACREG_INT_CODE_MIB_CHANGED:
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lbs_deb_cmd("EVENT: MIB CHANGED\n");
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break;
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case MACREG_INT_CODE_INIT_DONE:
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lbs_deb_cmd("EVENT: INIT DONE\n");
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break;
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case MACREG_INT_CODE_ADHOC_BCN_LOST:
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lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
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break;
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case MACREG_INT_CODE_RSSI_LOW:
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lbs_pr_alert("EVENT: rssi low\n");
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break;
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case MACREG_INT_CODE_SNR_LOW:
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lbs_pr_alert("EVENT: snr low\n");
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break;
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case MACREG_INT_CODE_MAX_FAIL:
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lbs_pr_alert("EVENT: max fail\n");
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break;
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case MACREG_INT_CODE_RSSI_HIGH:
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lbs_pr_alert("EVENT: rssi high\n");
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break;
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case MACREG_INT_CODE_SNR_HIGH:
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lbs_pr_alert("EVENT: snr high\n");
|
|
break;
|
|
|
|
case MACREG_INT_CODE_MESH_AUTO_STARTED:
|
|
/* Ignore spurious autostart events */
|
|
lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
|
|
break;
|
|
|
|
default:
|
|
lbs_pr_alert("EVENT: unknown event id %d\n", event);
|
|
break;
|
|
}
|
|
|
|
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
|
|
return ret;
|
|
}
|