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

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

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/marvell/mwifiex/tdls.c
Extension
.c
Size
44762 bytes
Lines
1558
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

if (mwifiex_is_tdls_link_setup(status)) {
			ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
			ra_list->tdls_link = true;
			tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
		} else {
			tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
			ra_list = list_first_entry_or_null(tid_list,
					struct mwifiex_ra_list_tbl, list);
			tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
		}

		if (!ra_list) {
			mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
			continue;
		}

		skb_queue_tail(&ra_list->skb_head, skb);

		ra_list->ba_pkt_count++;
		ra_list->total_pkt_count++;

		if (atomic_read(&priv->wmm.highest_queued_prio) <
						       tos_to_tid_inv[tid_down])
			atomic_set(&priv->wmm.highest_queued_prio,
				   tos_to_tid_inv[tid_down]);

		atomic_inc(&priv->wmm.tx_pkts_queued);
	}

	spin_unlock_bh(&priv->wmm.ra_list_spinlock);
	return;
}

static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
				      const u8 *mac)
{
	struct mwifiex_ra_list_tbl *ra_list;
	struct list_head *ra_list_head;
	struct sk_buff *skb, *tmp;
	int i;

	mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
	spin_lock_bh(&priv->wmm.ra_list_spinlock);

	for (i = 0; i < MAX_NUM_TID; i++) {
		if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
			ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
			list_for_each_entry(ra_list, ra_list_head, list) {
				skb_queue_walk_safe(&ra_list->skb_head, skb,
						    tmp) {
					if (!ether_addr_equal(mac, skb->data))
						continue;
					__skb_unlink(skb, &ra_list->skb_head);
					atomic_dec(&priv->wmm.tx_pkts_queued);
					ra_list->total_pkt_count--;
					skb_queue_tail(&priv->tdls_txq, skb);
				}
			}
		}
	}

	spin_unlock_bh(&priv->wmm.ra_list_spinlock);
	return;
}

/* This function appends rate TLV to scan config command. */
static int
mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
			     struct sk_buff *skb)
{
	u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
	u16 rates_size, supp_rates_size, ext_rates_size;

	memset(rates, 0, sizeof(rates));
	rates_size = mwifiex_get_supported_rates(priv, rates);

	supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);

	if (skb_tailroom(skb) < rates_size + 4) {
		mwifiex_dbg(priv->adapter, ERROR,
			    "Insufficient space while adding rates\n");
		return -ENOMEM;
	}

	pos = skb_put(skb, supp_rates_size + 2);
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos++ = supp_rates_size;
	memcpy(pos, rates, supp_rates_size);

	if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {

Annotation

Implementation Notes