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984 lines
27 KiB
984 lines
27 KiB
/* |
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* NXP Wireless LAN device driver: 802.11n RX Re-ordering |
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* |
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* Copyright 2011-2020 NXP |
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* |
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* This software file (the "File") is distributed by NXP |
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* under the terms of the GNU General Public License Version 2, June 1991 |
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* (the "License"). You may use, redistribute and/or modify this File in |
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* accordance with the terms and conditions of the License, a copy of which |
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* is available by writing to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
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* |
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
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* this warranty disclaimer. |
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*/ |
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|
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#include "decl.h" |
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#include "ioctl.h" |
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#include "util.h" |
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#include "fw.h" |
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#include "main.h" |
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#include "wmm.h" |
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#include "11n.h" |
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#include "11n_rxreorder.h" |
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|
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/* This function will dispatch amsdu packet and forward it to kernel/upper |
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* layer. |
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*/ |
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static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private *priv, |
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struct sk_buff *skb) |
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{ |
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struct rxpd *local_rx_pd = (struct rxpd *)(skb->data); |
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int ret; |
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|
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if (le16_to_cpu(local_rx_pd->rx_pkt_type) == PKT_TYPE_AMSDU) { |
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struct sk_buff_head list; |
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struct sk_buff *rx_skb; |
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|
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__skb_queue_head_init(&list); |
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|
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skb_pull(skb, le16_to_cpu(local_rx_pd->rx_pkt_offset)); |
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skb_trim(skb, le16_to_cpu(local_rx_pd->rx_pkt_length)); |
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|
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ieee80211_amsdu_to_8023s(skb, &list, priv->curr_addr, |
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priv->wdev.iftype, 0, NULL, NULL); |
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|
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while (!skb_queue_empty(&list)) { |
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struct rx_packet_hdr *rx_hdr; |
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|
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rx_skb = __skb_dequeue(&list); |
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rx_hdr = (struct rx_packet_hdr *)rx_skb->data; |
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if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && |
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ntohs(rx_hdr->eth803_hdr.h_proto) == ETH_P_TDLS) { |
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mwifiex_process_tdls_action_frame(priv, |
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(u8 *)rx_hdr, |
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skb->len); |
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} |
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|
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if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) |
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ret = mwifiex_uap_recv_packet(priv, rx_skb); |
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else |
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ret = mwifiex_recv_packet(priv, rx_skb); |
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if (ret == -1) |
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mwifiex_dbg(priv->adapter, ERROR, |
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"Rx of A-MSDU failed"); |
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} |
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return 0; |
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} |
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|
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return -1; |
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} |
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|
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/* This function will process the rx packet and forward it to kernel/upper |
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* layer. |
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*/ |
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static int mwifiex_11n_dispatch_pkt(struct mwifiex_private *priv, |
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struct sk_buff *payload) |
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{ |
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|
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int ret; |
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|
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if (!payload) { |
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mwifiex_dbg(priv->adapter, INFO, "info: fw drop data\n"); |
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return 0; |
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} |
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|
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ret = mwifiex_11n_dispatch_amsdu_pkt(priv, payload); |
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if (!ret) |
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return 0; |
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|
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if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) |
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return mwifiex_handle_uap_rx_forward(priv, payload); |
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|
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return mwifiex_process_rx_packet(priv, payload); |
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} |
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|
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/* |
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* This function dispatches all packets in the Rx reorder table until the |
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* start window. |
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* |
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* There could be holes in the buffer, which are skipped by the function. |
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* Since the buffer is linear, the function uses rotation to simulate |
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* circular buffer. |
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*/ |
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static void |
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mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, |
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struct mwifiex_rx_reorder_tbl *tbl, |
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int start_win) |
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{ |
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struct sk_buff_head list; |
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struct sk_buff *skb; |
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int pkt_to_send, i; |
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|
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__skb_queue_head_init(&list); |
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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|
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pkt_to_send = (start_win > tbl->start_win) ? |
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min((start_win - tbl->start_win), tbl->win_size) : |
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tbl->win_size; |
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|
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for (i = 0; i < pkt_to_send; ++i) { |
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if (tbl->rx_reorder_ptr[i]) { |
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skb = tbl->rx_reorder_ptr[i]; |
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__skb_queue_tail(&list, skb); |
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tbl->rx_reorder_ptr[i] = NULL; |
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} |
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} |
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|
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/* |
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* We don't have a circular buffer, hence use rotation to simulate |
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* circular buffer |
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*/ |
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for (i = 0; i < tbl->win_size - pkt_to_send; ++i) { |
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tbl->rx_reorder_ptr[i] = tbl->rx_reorder_ptr[pkt_to_send + i]; |
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tbl->rx_reorder_ptr[pkt_to_send + i] = NULL; |
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} |
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|
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tbl->start_win = start_win; |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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while ((skb = __skb_dequeue(&list))) |
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mwifiex_11n_dispatch_pkt(priv, skb); |
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} |
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|
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/* |
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* This function dispatches all packets in the Rx reorder table until |
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* a hole is found. |
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* |
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* The start window is adjusted automatically when a hole is located. |
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* Since the buffer is linear, the function uses rotation to simulate |
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* circular buffer. |
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*/ |
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static void |
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mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, |
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struct mwifiex_rx_reorder_tbl *tbl) |
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{ |
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struct sk_buff_head list; |
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struct sk_buff *skb; |
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int i, j, xchg; |
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|
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__skb_queue_head_init(&list); |
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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|
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for (i = 0; i < tbl->win_size; ++i) { |
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if (!tbl->rx_reorder_ptr[i]) |
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break; |
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skb = tbl->rx_reorder_ptr[i]; |
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__skb_queue_tail(&list, skb); |
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tbl->rx_reorder_ptr[i] = NULL; |
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} |
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|
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/* |
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* We don't have a circular buffer, hence use rotation to simulate |
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* circular buffer |
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*/ |
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if (i > 0) { |
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xchg = tbl->win_size - i; |
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for (j = 0; j < xchg; ++j) { |
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tbl->rx_reorder_ptr[j] = tbl->rx_reorder_ptr[i + j]; |
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tbl->rx_reorder_ptr[i + j] = NULL; |
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} |
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} |
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tbl->start_win = (tbl->start_win + i) & (MAX_TID_VALUE - 1); |
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|
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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while ((skb = __skb_dequeue(&list))) |
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mwifiex_11n_dispatch_pkt(priv, skb); |
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} |
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|
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/* |
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* This function deletes the Rx reorder table and frees the memory. |
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* |
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* The function stops the associated timer and dispatches all the |
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* pending packets in the Rx reorder table before deletion. |
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*/ |
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static void |
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mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv, |
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struct mwifiex_rx_reorder_tbl *tbl) |
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{ |
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int start_win; |
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|
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if (!tbl) |
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return; |
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|
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spin_lock_bh(&priv->adapter->rx_proc_lock); |
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priv->adapter->rx_locked = true; |
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if (priv->adapter->rx_processing) { |
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spin_unlock_bh(&priv->adapter->rx_proc_lock); |
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flush_workqueue(priv->adapter->rx_workqueue); |
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} else { |
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spin_unlock_bh(&priv->adapter->rx_proc_lock); |
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} |
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|
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start_win = (tbl->start_win + tbl->win_size) & (MAX_TID_VALUE - 1); |
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mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); |
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|
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del_timer_sync(&tbl->timer_context.timer); |
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tbl->timer_context.timer_is_set = false; |
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|
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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list_del(&tbl->list); |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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kfree(tbl->rx_reorder_ptr); |
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kfree(tbl); |
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|
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spin_lock_bh(&priv->adapter->rx_proc_lock); |
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priv->adapter->rx_locked = false; |
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spin_unlock_bh(&priv->adapter->rx_proc_lock); |
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|
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} |
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|
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/* |
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* This function returns the pointer to an entry in Rx reordering |
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* table which matches the given TA/TID pair. |
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*/ |
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struct mwifiex_rx_reorder_tbl * |
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mwifiex_11n_get_rx_reorder_tbl(struct mwifiex_private *priv, int tid, u8 *ta) |
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{ |
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struct mwifiex_rx_reorder_tbl *tbl; |
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|
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) { |
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if (!memcmp(tbl->ta, ta, ETH_ALEN) && tbl->tid == tid) { |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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return tbl; |
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} |
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} |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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return NULL; |
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} |
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|
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/* This function retrieves the pointer to an entry in Rx reordering |
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* table which matches the given TA and deletes it. |
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*/ |
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void mwifiex_11n_del_rx_reorder_tbl_by_ta(struct mwifiex_private *priv, u8 *ta) |
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{ |
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struct mwifiex_rx_reorder_tbl *tbl, *tmp; |
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|
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if (!ta) |
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return; |
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|
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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list_for_each_entry_safe(tbl, tmp, &priv->rx_reorder_tbl_ptr, list) { |
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if (!memcmp(tbl->ta, ta, ETH_ALEN)) { |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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mwifiex_del_rx_reorder_entry(priv, tbl); |
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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} |
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} |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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return; |
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} |
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|
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/* |
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* This function finds the last sequence number used in the packets |
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* buffered in Rx reordering table. |
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*/ |
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static int |
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mwifiex_11n_find_last_seq_num(struct reorder_tmr_cnxt *ctx) |
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{ |
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struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr = ctx->ptr; |
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struct mwifiex_private *priv = ctx->priv; |
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int i; |
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|
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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for (i = rx_reorder_tbl_ptr->win_size - 1; i >= 0; --i) { |
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if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) { |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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return i; |
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} |
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} |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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|
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return -1; |
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} |
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|
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/* |
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* This function flushes all the packets in Rx reordering table. |
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* |
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* The function checks if any packets are currently buffered in the |
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* table or not. In case there are packets available, it dispatches |
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* them and then dumps the Rx reordering table. |
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*/ |
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static void |
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mwifiex_flush_data(struct timer_list *t) |
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{ |
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struct reorder_tmr_cnxt *ctx = |
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from_timer(ctx, t, timer); |
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int start_win, seq_num; |
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|
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ctx->timer_is_set = false; |
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seq_num = mwifiex_11n_find_last_seq_num(ctx); |
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|
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if (seq_num < 0) |
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return; |
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mwifiex_dbg(ctx->priv->adapter, INFO, "info: flush data %d\n", seq_num); |
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start_win = (ctx->ptr->start_win + seq_num + 1) & (MAX_TID_VALUE - 1); |
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mwifiex_11n_dispatch_pkt_until_start_win(ctx->priv, ctx->ptr, |
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start_win); |
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} |
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|
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/* |
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* This function creates an entry in Rx reordering table for the |
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* given TA/TID. |
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* |
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* The function also initializes the entry with sequence number, window |
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* size as well as initializes the timer. |
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* |
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* If the received TA/TID pair is already present, all the packets are |
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* dispatched and the window size is moved until the SSN. |
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*/ |
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static void |
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mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, |
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int tid, int win_size, int seq_num) |
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{ |
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int i; |
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struct mwifiex_rx_reorder_tbl *tbl, *new_node; |
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u16 last_seq = 0; |
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struct mwifiex_sta_node *node; |
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|
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/* |
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* If we get a TID, ta pair which is already present dispatch all the |
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* the packets and move the window size until the ssn |
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*/ |
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tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); |
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if (tbl) { |
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mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, seq_num); |
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return; |
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} |
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/* if !tbl then create one */ |
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new_node = kzalloc(sizeof(struct mwifiex_rx_reorder_tbl), GFP_KERNEL); |
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if (!new_node) |
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return; |
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|
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INIT_LIST_HEAD(&new_node->list); |
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new_node->tid = tid; |
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memcpy(new_node->ta, ta, ETH_ALEN); |
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new_node->start_win = seq_num; |
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new_node->init_win = seq_num; |
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new_node->flags = 0; |
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|
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spin_lock_bh(&priv->sta_list_spinlock); |
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if (mwifiex_queuing_ra_based(priv)) { |
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if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) { |
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node = mwifiex_get_sta_entry(priv, ta); |
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if (node) |
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last_seq = node->rx_seq[tid]; |
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} |
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} else { |
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node = mwifiex_get_sta_entry(priv, ta); |
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if (node) |
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last_seq = node->rx_seq[tid]; |
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else |
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last_seq = priv->rx_seq[tid]; |
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} |
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spin_unlock_bh(&priv->sta_list_spinlock); |
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|
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mwifiex_dbg(priv->adapter, INFO, |
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"info: last_seq=%d start_win=%d\n", |
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last_seq, new_node->start_win); |
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|
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if (last_seq != MWIFIEX_DEF_11N_RX_SEQ_NUM && |
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last_seq >= new_node->start_win) { |
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new_node->start_win = last_seq + 1; |
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new_node->flags |= RXREOR_INIT_WINDOW_SHIFT; |
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} |
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|
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new_node->win_size = win_size; |
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|
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new_node->rx_reorder_ptr = kcalloc(win_size, sizeof(void *), |
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GFP_KERNEL); |
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if (!new_node->rx_reorder_ptr) { |
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kfree(new_node); |
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mwifiex_dbg(priv->adapter, ERROR, |
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"%s: failed to alloc reorder_ptr\n", __func__); |
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return; |
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} |
|
|
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new_node->timer_context.ptr = new_node; |
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new_node->timer_context.priv = priv; |
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new_node->timer_context.timer_is_set = false; |
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|
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timer_setup(&new_node->timer_context.timer, mwifiex_flush_data, 0); |
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|
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for (i = 0; i < win_size; ++i) |
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new_node->rx_reorder_ptr[i] = NULL; |
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|
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spin_lock_bh(&priv->rx_reorder_tbl_lock); |
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list_add_tail(&new_node->list, &priv->rx_reorder_tbl_ptr); |
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spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
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} |
|
|
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static void |
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mwifiex_11n_rxreorder_timer_restart(struct mwifiex_rx_reorder_tbl *tbl) |
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{ |
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u32 min_flush_time; |
|
|
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if (tbl->win_size >= MWIFIEX_BA_WIN_SIZE_32) |
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min_flush_time = MIN_FLUSH_TIMER_15_MS; |
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else |
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min_flush_time = MIN_FLUSH_TIMER_MS; |
|
|
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mod_timer(&tbl->timer_context.timer, |
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jiffies + msecs_to_jiffies(min_flush_time * tbl->win_size)); |
|
|
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tbl->timer_context.timer_is_set = true; |
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} |
|
|
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/* |
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* This function prepares command for adding a BA request. |
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* |
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* Preparation includes - |
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* - Setting command ID and proper size |
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* - Setting add BA request buffer |
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* - Ensuring correct endian-ness |
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*/ |
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int mwifiex_cmd_11n_addba_req(struct host_cmd_ds_command *cmd, void *data_buf) |
|
{ |
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struct host_cmd_ds_11n_addba_req *add_ba_req = &cmd->params.add_ba_req; |
|
|
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cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_REQ); |
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cmd->size = cpu_to_le16(sizeof(*add_ba_req) + S_DS_GEN); |
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memcpy(add_ba_req, data_buf, sizeof(*add_ba_req)); |
|
|
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return 0; |
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} |
|
|
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/* |
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* This function prepares command for adding a BA response. |
|
* |
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* Preparation includes - |
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* - Setting command ID and proper size |
|
* - Setting add BA response buffer |
|
* - Ensuring correct endian-ness |
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*/ |
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int mwifiex_cmd_11n_addba_rsp_gen(struct mwifiex_private *priv, |
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struct host_cmd_ds_command *cmd, |
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struct host_cmd_ds_11n_addba_req |
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*cmd_addba_req) |
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{ |
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struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &cmd->params.add_ba_rsp; |
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struct mwifiex_sta_node *sta_ptr; |
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u32 rx_win_size = priv->add_ba_param.rx_win_size; |
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u8 tid; |
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int win_size; |
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uint16_t block_ack_param_set; |
|
|
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if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && |
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ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && |
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priv->adapter->is_hw_11ac_capable && |
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memcmp(priv->cfg_bssid, cmd_addba_req->peer_mac_addr, ETH_ALEN)) { |
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spin_lock_bh(&priv->sta_list_spinlock); |
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sta_ptr = mwifiex_get_sta_entry(priv, |
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cmd_addba_req->peer_mac_addr); |
|
if (!sta_ptr) { |
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spin_unlock_bh(&priv->sta_list_spinlock); |
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mwifiex_dbg(priv->adapter, ERROR, |
|
"BA setup with unknown TDLS peer %pM!\n", |
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cmd_addba_req->peer_mac_addr); |
|
return -1; |
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} |
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if (sta_ptr->is_11ac_enabled) |
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rx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE; |
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spin_unlock_bh(&priv->sta_list_spinlock); |
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} |
|
|
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cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_RSP); |
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cmd->size = cpu_to_le16(sizeof(*add_ba_rsp) + S_DS_GEN); |
|
|
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memcpy(add_ba_rsp->peer_mac_addr, cmd_addba_req->peer_mac_addr, |
|
ETH_ALEN); |
|
add_ba_rsp->dialog_token = cmd_addba_req->dialog_token; |
|
add_ba_rsp->block_ack_tmo = cmd_addba_req->block_ack_tmo; |
|
add_ba_rsp->ssn = cmd_addba_req->ssn; |
|
|
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block_ack_param_set = le16_to_cpu(cmd_addba_req->block_ack_param_set); |
|
tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) |
|
>> BLOCKACKPARAM_TID_POS; |
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add_ba_rsp->status_code = cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT); |
|
block_ack_param_set &= ~IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK; |
|
|
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/* If we don't support AMSDU inside AMPDU, reset the bit */ |
|
if (!priv->add_ba_param.rx_amsdu || |
|
(priv->aggr_prio_tbl[tid].amsdu == BA_STREAM_NOT_ALLOWED)) |
|
block_ack_param_set &= ~BLOCKACKPARAM_AMSDU_SUPP_MASK; |
|
block_ack_param_set |= rx_win_size << BLOCKACKPARAM_WINSIZE_POS; |
|
add_ba_rsp->block_ack_param_set = cpu_to_le16(block_ack_param_set); |
|
win_size = (le16_to_cpu(add_ba_rsp->block_ack_param_set) |
|
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) |
|
>> BLOCKACKPARAM_WINSIZE_POS; |
|
cmd_addba_req->block_ack_param_set = cpu_to_le16(block_ack_param_set); |
|
|
|
mwifiex_11n_create_rx_reorder_tbl(priv, cmd_addba_req->peer_mac_addr, |
|
tid, win_size, |
|
le16_to_cpu(cmd_addba_req->ssn)); |
|
return 0; |
|
} |
|
|
|
/* |
|
* This function prepares command for deleting a BA request. |
|
* |
|
* Preparation includes - |
|
* - Setting command ID and proper size |
|
* - Setting del BA request buffer |
|
* - Ensuring correct endian-ness |
|
*/ |
|
int mwifiex_cmd_11n_delba(struct host_cmd_ds_command *cmd, void *data_buf) |
|
{ |
|
struct host_cmd_ds_11n_delba *del_ba = &cmd->params.del_ba; |
|
|
|
cmd->command = cpu_to_le16(HostCmd_CMD_11N_DELBA); |
|
cmd->size = cpu_to_le16(sizeof(*del_ba) + S_DS_GEN); |
|
memcpy(del_ba, data_buf, sizeof(*del_ba)); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* This function identifies if Rx reordering is needed for a received packet. |
|
* |
|
* In case reordering is required, the function will do the reordering |
|
* before sending it to kernel. |
|
* |
|
* The Rx reorder table is checked first with the received TID/TA pair. If |
|
* not found, the received packet is dispatched immediately. But if found, |
|
* the packet is reordered and all the packets in the updated Rx reordering |
|
* table is dispatched until a hole is found. |
|
* |
|
* For sequence number less than the starting window, the packet is dropped. |
|
*/ |
|
int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *priv, |
|
u16 seq_num, u16 tid, |
|
u8 *ta, u8 pkt_type, void *payload) |
|
{ |
|
struct mwifiex_rx_reorder_tbl *tbl; |
|
int prev_start_win, start_win, end_win, win_size; |
|
u16 pkt_index; |
|
bool init_window_shift = false; |
|
int ret = 0; |
|
|
|
tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); |
|
if (!tbl) { |
|
if (pkt_type != PKT_TYPE_BAR) |
|
mwifiex_11n_dispatch_pkt(priv, payload); |
|
return ret; |
|
} |
|
|
|
if ((pkt_type == PKT_TYPE_AMSDU) && !tbl->amsdu) { |
|
mwifiex_11n_dispatch_pkt(priv, payload); |
|
return ret; |
|
} |
|
|
|
start_win = tbl->start_win; |
|
prev_start_win = start_win; |
|
win_size = tbl->win_size; |
|
end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); |
|
if (tbl->flags & RXREOR_INIT_WINDOW_SHIFT) { |
|
init_window_shift = true; |
|
tbl->flags &= ~RXREOR_INIT_WINDOW_SHIFT; |
|
} |
|
|
|
if (tbl->flags & RXREOR_FORCE_NO_DROP) { |
|
mwifiex_dbg(priv->adapter, INFO, |
|
"RXREOR_FORCE_NO_DROP when HS is activated\n"); |
|
tbl->flags &= ~RXREOR_FORCE_NO_DROP; |
|
} else if (init_window_shift && seq_num < start_win && |
|
seq_num >= tbl->init_win) { |
|
mwifiex_dbg(priv->adapter, INFO, |
|
"Sender TID sequence number reset %d->%d for SSN %d\n", |
|
start_win, seq_num, tbl->init_win); |
|
tbl->start_win = start_win = seq_num; |
|
end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); |
|
} else { |
|
/* |
|
* If seq_num is less then starting win then ignore and drop |
|
* the packet |
|
*/ |
|
if ((start_win + TWOPOW11) > (MAX_TID_VALUE - 1)) { |
|
if (seq_num >= ((start_win + TWOPOW11) & |
|
(MAX_TID_VALUE - 1)) && |
|
seq_num < start_win) { |
|
ret = -1; |
|
goto done; |
|
} |
|
} else if ((seq_num < start_win) || |
|
(seq_num >= (start_win + TWOPOW11))) { |
|
ret = -1; |
|
goto done; |
|
} |
|
} |
|
|
|
/* |
|
* If this packet is a BAR we adjust seq_num as |
|
* WinStart = seq_num |
|
*/ |
|
if (pkt_type == PKT_TYPE_BAR) |
|
seq_num = ((seq_num + win_size) - 1) & (MAX_TID_VALUE - 1); |
|
|
|
if (((end_win < start_win) && |
|
(seq_num < start_win) && (seq_num > end_win)) || |
|
((end_win > start_win) && ((seq_num > end_win) || |
|
(seq_num < start_win)))) { |
|
end_win = seq_num; |
|
if (((end_win - win_size) + 1) >= 0) |
|
start_win = (end_win - win_size) + 1; |
|
else |
|
start_win = (MAX_TID_VALUE - (win_size - end_win)) + 1; |
|
mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); |
|
} |
|
|
|
if (pkt_type != PKT_TYPE_BAR) { |
|
if (seq_num >= start_win) |
|
pkt_index = seq_num - start_win; |
|
else |
|
pkt_index = (seq_num+MAX_TID_VALUE) - start_win; |
|
|
|
if (tbl->rx_reorder_ptr[pkt_index]) { |
|
ret = -1; |
|
goto done; |
|
} |
|
|
|
tbl->rx_reorder_ptr[pkt_index] = payload; |
|
} |
|
|
|
/* |
|
* Dispatch all packets sequentially from start_win until a |
|
* hole is found and adjust the start_win appropriately |
|
*/ |
|
mwifiex_11n_scan_and_dispatch(priv, tbl); |
|
|
|
done: |
|
if (!tbl->timer_context.timer_is_set || |
|
prev_start_win != tbl->start_win) |
|
mwifiex_11n_rxreorder_timer_restart(tbl); |
|
return ret; |
|
} |
|
|
|
/* |
|
* This function deletes an entry for a given TID/TA pair. |
|
* |
|
* The TID/TA are taken from del BA event body. |
|
*/ |
|
void |
|
mwifiex_del_ba_tbl(struct mwifiex_private *priv, int tid, u8 *peer_mac, |
|
u8 type, int initiator) |
|
{ |
|
struct mwifiex_rx_reorder_tbl *tbl; |
|
struct mwifiex_tx_ba_stream_tbl *ptx_tbl; |
|
struct mwifiex_ra_list_tbl *ra_list; |
|
u8 cleanup_rx_reorder_tbl; |
|
int tid_down; |
|
|
|
if (type == TYPE_DELBA_RECEIVE) |
|
cleanup_rx_reorder_tbl = (initiator) ? true : false; |
|
else |
|
cleanup_rx_reorder_tbl = (initiator) ? false : true; |
|
|
|
mwifiex_dbg(priv->adapter, EVENT, "event: DELBA: %pM tid=%d initiator=%d\n", |
|
peer_mac, tid, initiator); |
|
|
|
if (cleanup_rx_reorder_tbl) { |
|
tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
|
peer_mac); |
|
if (!tbl) { |
|
mwifiex_dbg(priv->adapter, EVENT, |
|
"event: TID, TA not found in table\n"); |
|
return; |
|
} |
|
mwifiex_del_rx_reorder_entry(priv, tbl); |
|
} else { |
|
ptx_tbl = mwifiex_get_ba_tbl(priv, tid, peer_mac); |
|
if (!ptx_tbl) { |
|
mwifiex_dbg(priv->adapter, EVENT, |
|
"event: TID, RA not found in table\n"); |
|
return; |
|
} |
|
|
|
tid_down = mwifiex_wmm_downgrade_tid(priv, tid); |
|
ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, peer_mac); |
|
if (ra_list) { |
|
ra_list->amsdu_in_ampdu = false; |
|
ra_list->ba_status = BA_SETUP_NONE; |
|
} |
|
spin_lock_bh(&priv->tx_ba_stream_tbl_lock); |
|
mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, ptx_tbl); |
|
spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); |
|
} |
|
} |
|
|
|
/* |
|
* This function handles the command response of an add BA response. |
|
* |
|
* Handling includes changing the header fields into CPU format and |
|
* creating the stream, provided the add BA is accepted. |
|
*/ |
|
int mwifiex_ret_11n_addba_resp(struct mwifiex_private *priv, |
|
struct host_cmd_ds_command *resp) |
|
{ |
|
struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; |
|
int tid, win_size; |
|
struct mwifiex_rx_reorder_tbl *tbl; |
|
uint16_t block_ack_param_set; |
|
|
|
block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); |
|
|
|
tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) |
|
>> BLOCKACKPARAM_TID_POS; |
|
/* |
|
* Check if we had rejected the ADDBA, if yes then do not create |
|
* the stream |
|
*/ |
|
if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { |
|
mwifiex_dbg(priv->adapter, ERROR, "ADDBA RSP: failed %pM tid=%d)\n", |
|
add_ba_rsp->peer_mac_addr, tid); |
|
|
|
tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
|
add_ba_rsp->peer_mac_addr); |
|
if (tbl) |
|
mwifiex_del_rx_reorder_entry(priv, tbl); |
|
|
|
return 0; |
|
} |
|
|
|
win_size = (block_ack_param_set & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) |
|
>> BLOCKACKPARAM_WINSIZE_POS; |
|
|
|
tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
|
add_ba_rsp->peer_mac_addr); |
|
if (tbl) { |
|
if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && |
|
priv->add_ba_param.rx_amsdu && |
|
(priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) |
|
tbl->amsdu = true; |
|
else |
|
tbl->amsdu = false; |
|
} |
|
|
|
mwifiex_dbg(priv->adapter, CMD, |
|
"cmd: ADDBA RSP: %pM tid=%d ssn=%d win_size=%d\n", |
|
add_ba_rsp->peer_mac_addr, tid, add_ba_rsp->ssn, win_size); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* This function handles BA stream timeout event by preparing and sending |
|
* a command to the firmware. |
|
*/ |
|
void mwifiex_11n_ba_stream_timeout(struct mwifiex_private *priv, |
|
struct host_cmd_ds_11n_batimeout *event) |
|
{ |
|
struct host_cmd_ds_11n_delba delba; |
|
|
|
memset(&delba, 0, sizeof(struct host_cmd_ds_11n_delba)); |
|
memcpy(delba.peer_mac_addr, event->peer_mac_addr, ETH_ALEN); |
|
|
|
delba.del_ba_param_set |= |
|
cpu_to_le16((u16) event->tid << DELBA_TID_POS); |
|
delba.del_ba_param_set |= cpu_to_le16( |
|
(u16) event->origninator << DELBA_INITIATOR_POS); |
|
delba.reason_code = cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT); |
|
mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 0, 0, &delba, false); |
|
} |
|
|
|
/* |
|
* This function cleans up the Rx reorder table by deleting all the entries |
|
* and re-initializing. |
|
*/ |
|
void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private *priv) |
|
{ |
|
struct mwifiex_rx_reorder_tbl *del_tbl_ptr, *tmp_node; |
|
|
|
spin_lock_bh(&priv->rx_reorder_tbl_lock); |
|
list_for_each_entry_safe(del_tbl_ptr, tmp_node, |
|
&priv->rx_reorder_tbl_ptr, list) { |
|
spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
|
mwifiex_del_rx_reorder_entry(priv, del_tbl_ptr); |
|
spin_lock_bh(&priv->rx_reorder_tbl_lock); |
|
} |
|
INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); |
|
spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
|
|
|
mwifiex_reset_11n_rx_seq_num(priv); |
|
} |
|
|
|
/* |
|
* This function updates all rx_reorder_tbl's flags. |
|
*/ |
|
void mwifiex_update_rxreor_flags(struct mwifiex_adapter *adapter, u8 flags) |
|
{ |
|
struct mwifiex_private *priv; |
|
struct mwifiex_rx_reorder_tbl *tbl; |
|
int i; |
|
|
|
for (i = 0; i < adapter->priv_num; i++) { |
|
priv = adapter->priv[i]; |
|
if (!priv) |
|
continue; |
|
|
|
spin_lock_bh(&priv->rx_reorder_tbl_lock); |
|
list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) |
|
tbl->flags = flags; |
|
spin_unlock_bh(&priv->rx_reorder_tbl_lock); |
|
} |
|
|
|
return; |
|
} |
|
|
|
/* This function update all the rx_win_size based on coex flag |
|
*/ |
|
static void mwifiex_update_ampdu_rxwinsize(struct mwifiex_adapter *adapter, |
|
bool coex_flag) |
|
{ |
|
u8 i; |
|
u32 rx_win_size; |
|
struct mwifiex_private *priv; |
|
|
|
dev_dbg(adapter->dev, "Update rxwinsize %d\n", coex_flag); |
|
|
|
for (i = 0; i < adapter->priv_num; i++) { |
|
if (!adapter->priv[i]) |
|
continue; |
|
priv = adapter->priv[i]; |
|
rx_win_size = priv->add_ba_param.rx_win_size; |
|
if (coex_flag) { |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_UAP_COEX_AMPDU_DEF_RXWINSIZE; |
|
} else { |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; |
|
if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) |
|
priv->add_ba_param.rx_win_size = |
|
MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; |
|
} |
|
|
|
if (adapter->coex_win_size && adapter->coex_rx_win_size) |
|
priv->add_ba_param.rx_win_size = |
|
adapter->coex_rx_win_size; |
|
|
|
if (rx_win_size != priv->add_ba_param.rx_win_size) { |
|
if (!priv->media_connected) |
|
continue; |
|
for (i = 0; i < MAX_NUM_TID; i++) |
|
mwifiex_11n_delba(priv, i); |
|
} |
|
} |
|
} |
|
|
|
/* This function check coex for RX BA |
|
*/ |
|
void mwifiex_coex_ampdu_rxwinsize(struct mwifiex_adapter *adapter) |
|
{ |
|
u8 i; |
|
struct mwifiex_private *priv; |
|
u8 count = 0; |
|
|
|
for (i = 0; i < adapter->priv_num; i++) { |
|
if (adapter->priv[i]) { |
|
priv = adapter->priv[i]; |
|
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { |
|
if (priv->media_connected) |
|
count++; |
|
} |
|
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { |
|
if (priv->bss_started) |
|
count++; |
|
} |
|
} |
|
if (count >= MWIFIEX_BSS_COEX_COUNT) |
|
break; |
|
} |
|
if (count >= MWIFIEX_BSS_COEX_COUNT) |
|
mwifiex_update_ampdu_rxwinsize(adapter, true); |
|
else |
|
mwifiex_update_ampdu_rxwinsize(adapter, false); |
|
} |
|
|
|
/* This function handles rxba_sync event |
|
*/ |
|
void mwifiex_11n_rxba_sync_event(struct mwifiex_private *priv, |
|
u8 *event_buf, u16 len) |
|
{ |
|
struct mwifiex_ie_types_rxba_sync *tlv_rxba = (void *)event_buf; |
|
u16 tlv_type, tlv_len; |
|
struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; |
|
u8 i, j; |
|
u16 seq_num, tlv_seq_num, tlv_bitmap_len; |
|
int tlv_buf_left = len; |
|
int ret; |
|
u8 *tmp; |
|
|
|
mwifiex_dbg_dump(priv->adapter, EVT_D, "RXBA_SYNC event:", |
|
event_buf, len); |
|
while (tlv_buf_left >= sizeof(*tlv_rxba)) { |
|
tlv_type = le16_to_cpu(tlv_rxba->header.type); |
|
tlv_len = le16_to_cpu(tlv_rxba->header.len); |
|
if (tlv_type != TLV_TYPE_RXBA_SYNC) { |
|
mwifiex_dbg(priv->adapter, ERROR, |
|
"Wrong TLV id=0x%x\n", tlv_type); |
|
return; |
|
} |
|
|
|
tlv_seq_num = le16_to_cpu(tlv_rxba->seq_num); |
|
tlv_bitmap_len = le16_to_cpu(tlv_rxba->bitmap_len); |
|
mwifiex_dbg(priv->adapter, INFO, |
|
"%pM tid=%d seq_num=%d bitmap_len=%d\n", |
|
tlv_rxba->mac, tlv_rxba->tid, tlv_seq_num, |
|
tlv_bitmap_len); |
|
|
|
rx_reor_tbl_ptr = |
|
mwifiex_11n_get_rx_reorder_tbl(priv, tlv_rxba->tid, |
|
tlv_rxba->mac); |
|
if (!rx_reor_tbl_ptr) { |
|
mwifiex_dbg(priv->adapter, ERROR, |
|
"Can not find rx_reorder_tbl!"); |
|
return; |
|
} |
|
|
|
for (i = 0; i < tlv_bitmap_len; i++) { |
|
for (j = 0 ; j < 8; j++) { |
|
if (tlv_rxba->bitmap[i] & (1 << j)) { |
|
seq_num = (MAX_TID_VALUE - 1) & |
|
(tlv_seq_num + i * 8 + j); |
|
|
|
mwifiex_dbg(priv->adapter, ERROR, |
|
"drop packet,seq=%d\n", |
|
seq_num); |
|
|
|
ret = mwifiex_11n_rx_reorder_pkt |
|
(priv, seq_num, tlv_rxba->tid, |
|
tlv_rxba->mac, 0, NULL); |
|
|
|
if (ret) |
|
mwifiex_dbg(priv->adapter, |
|
ERROR, |
|
"Fail to drop packet"); |
|
} |
|
} |
|
} |
|
|
|
tlv_buf_left -= (sizeof(*tlv_rxba) + tlv_len); |
|
tmp = (u8 *)tlv_rxba + tlv_len + sizeof(*tlv_rxba); |
|
tlv_rxba = (struct mwifiex_ie_types_rxba_sync *)tmp; |
|
} |
|
}
|
|
|