drivers/net/wireless/marvell/mwifiex/sta_event.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/marvell/mwifiex/sta_event.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/marvell/mwifiex/sta_event.c
Extension
.c
Size
32504 bytes
Lines
1099
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (ele_hdr->element_id) {
		case WLAN_EID_HT_CAPABILITY:
			sta_ptr->is_11n_enabled = true;
			ht_cap = (void *)(ele_hdr + 2);
			sta_ptr->max_amsdu = le16_to_cpu(ht_cap->cap_info) &
				IEEE80211_HT_CAP_MAX_AMSDU ?
				MWIFIEX_TX_DATA_BUF_SIZE_8K :
				MWIFIEX_TX_DATA_BUF_SIZE_4K;
			mwifiex_dbg(priv->adapter, INFO,
				    "11n enabled!, max_amsdu : %d\n",
				    sta_ptr->max_amsdu);
			break;

		case WLAN_EID_VHT_CAPABILITY:
			sta_ptr->is_11ac_enabled = true;
			vht_cap = (void *)(ele_hdr + 2);
			/* check VHT MAXMPDU capability */
			switch (le32_to_cpu(vht_cap->vht_cap_info) & 0x3) {
			case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
				sta_ptr->max_amsdu =
					MWIFIEX_TX_DATA_BUF_SIZE_12K;
				break;
			case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
				sta_ptr->max_amsdu =
					MWIFIEX_TX_DATA_BUF_SIZE_8K;
				break;
			case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
				sta_ptr->max_amsdu =
					MWIFIEX_TX_DATA_BUF_SIZE_4K;
				break;
			default:
				break;
			}

			mwifiex_dbg(priv->adapter, INFO,
				    "11ac enabled!, max_amsdu : %d\n",
				    sta_ptr->max_amsdu);
			break;
		default:
			break;
		}

		curr += (ele_len + sizeof(*ele_hdr));
		evt_len -= (ele_len + sizeof(*ele_hdr));
	}

	return 0;
}

/*
 * This function resets the connection state.
 *
 * The function is invoked after receiving a disconnect event from firmware,
 * and performs the following actions -
 *      - Set media status to disconnected
 *      - Clean up Tx and Rx packets
 *      - Resets SNR/NF/RSSI value in driver
 *      - Resets security configurations in driver
 *      - Enables auto data rate
 *      - Saves the previous SSID and BSSID so that they can
 *        be used for re-association, if required
 *      - Erases current SSID and BSSID information
 *      - Sends a disconnect event to upper layers/applications.
 */
void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code,
				 bool from_ap)
{
	struct mwifiex_adapter *adapter = priv->adapter;

	if (!priv->media_connected)
		return;

	mwifiex_dbg(adapter, INFO,
		    "info: handles disconnect event\n");

	priv->media_connected = false;

	priv->auth_flag = 0;
	priv->auth_alg = WLAN_AUTH_NONE;

	priv->scan_block = false;
	priv->port_open = false;

	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
	    ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) {
		mwifiex_disable_all_tdls_links(priv);

		if (priv->adapter->auto_tdls)
			mwifiex_clean_auto_tdls(priv);
	}

Annotation

Implementation Notes