diff options
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/mwifiex/11n_rxreorder.c | 160 |
1 files changed, 73 insertions, 87 deletions
diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c index 491cd85cb6f2..06f5d3684027 100644 --- a/drivers/net/wireless/mwifiex/11n_rxreorder.c +++ b/drivers/net/wireless/mwifiex/11n_rxreorder.c @@ -27,31 +27,31 @@ #include "11n_rxreorder.h" /* - * This function dispatches all packets in the Rx reorder table. + * This function dispatches all packets in the Rx reorder table until the + * start window. * * There could be holes in the buffer, which are skipped by the function. * Since the buffer is linear, the function uses rotation to simulate * circular buffer. */ static void -mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl - *rx_reor_tbl_ptr, int start_win) +mwifiex_11n_dispatch_pkt(struct mwifiex_private *priv, + struct mwifiex_rx_reorder_tbl *tbl, int start_win) { - int no_pkt_to_send, i; + int pkt_to_send, i; void *rx_tmp_ptr; unsigned long flags; - no_pkt_to_send = (start_win > rx_reor_tbl_ptr->start_win) ? - min((start_win - rx_reor_tbl_ptr->start_win), - rx_reor_tbl_ptr->win_size) : rx_reor_tbl_ptr->win_size; + pkt_to_send = (start_win > tbl->start_win) ? + min((start_win - tbl->start_win), tbl->win_size) : + tbl->win_size; - for (i = 0; i < no_pkt_to_send; ++i) { + for (i = 0; i < pkt_to_send; ++i) { spin_lock_irqsave(&priv->rx_pkt_lock, flags); rx_tmp_ptr = NULL; - if (rx_reor_tbl_ptr->rx_reorder_ptr[i]) { - rx_tmp_ptr = rx_reor_tbl_ptr->rx_reorder_ptr[i]; - rx_reor_tbl_ptr->rx_reorder_ptr[i] = NULL; + if (tbl->rx_reorder_ptr[i]) { + rx_tmp_ptr = tbl->rx_reorder_ptr[i]; + tbl->rx_reorder_ptr[i] = NULL; } spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); if (rx_tmp_ptr) @@ -63,13 +63,12 @@ mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, * We don't have a circular buffer, hence use rotation to simulate * circular buffer */ - for (i = 0; i < rx_reor_tbl_ptr->win_size - no_pkt_to_send; ++i) { - rx_reor_tbl_ptr->rx_reorder_ptr[i] = - rx_reor_tbl_ptr->rx_reorder_ptr[no_pkt_to_send + i]; - rx_reor_tbl_ptr->rx_reorder_ptr[no_pkt_to_send + i] = NULL; + for (i = 0; i < tbl->win_size - pkt_to_send; ++i) { + tbl->rx_reorder_ptr[i] = tbl->rx_reorder_ptr[pkt_to_send + i]; + tbl->rx_reorder_ptr[pkt_to_send + i] = NULL; } - rx_reor_tbl_ptr->start_win = start_win; + tbl->start_win = start_win; spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); } @@ -83,20 +82,20 @@ mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, */ static void mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr) + struct mwifiex_rx_reorder_tbl *tbl) { int i, j, xchg; void *rx_tmp_ptr; unsigned long flags; - for (i = 0; i < rx_reor_tbl_ptr->win_size; ++i) { + for (i = 0; i < tbl->win_size; ++i) { spin_lock_irqsave(&priv->rx_pkt_lock, flags); - if (!rx_reor_tbl_ptr->rx_reorder_ptr[i]) { + if (!tbl->rx_reorder_ptr[i]) { spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); break; } - rx_tmp_ptr = rx_reor_tbl_ptr->rx_reorder_ptr[i]; - rx_reor_tbl_ptr->rx_reorder_ptr[i] = NULL; + rx_tmp_ptr = tbl->rx_reorder_ptr[i]; + tbl->rx_reorder_ptr[i] = NULL; spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); mwifiex_process_rx_packet(priv->adapter, rx_tmp_ptr); } @@ -107,15 +106,13 @@ mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, * circular buffer */ if (i > 0) { - xchg = rx_reor_tbl_ptr->win_size - i; + xchg = tbl->win_size - i; for (j = 0; j < xchg; ++j) { - rx_reor_tbl_ptr->rx_reorder_ptr[j] = - rx_reor_tbl_ptr->rx_reorder_ptr[i + j]; - rx_reor_tbl_ptr->rx_reorder_ptr[i + j] = NULL; + tbl->rx_reorder_ptr[j] = tbl->rx_reorder_ptr[i + j]; + tbl->rx_reorder_ptr[i + j] = NULL; } } - rx_reor_tbl_ptr->start_win = (rx_reor_tbl_ptr->start_win + i) - &(MAX_TID_VALUE - 1); + tbl->start_win = (tbl->start_win + i) & (MAX_TID_VALUE - 1); spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); } @@ -126,28 +123,25 @@ mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, * pending packets in the Rx reorder table before deletion. */ static void -mwifiex_11n_delete_rx_reorder_tbl_entry(struct mwifiex_private *priv, - struct mwifiex_rx_reorder_tbl - *rx_reor_tbl_ptr) +mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv, + struct mwifiex_rx_reorder_tbl *tbl) { unsigned long flags; - if (!rx_reor_tbl_ptr) + if (!tbl) return; - mwifiex_11n_dispatch_pkt_until_start_win(priv, rx_reor_tbl_ptr, - (rx_reor_tbl_ptr->start_win + - rx_reor_tbl_ptr->win_size) - &(MAX_TID_VALUE - 1)); + mwifiex_11n_dispatch_pkt(priv, tbl, (tbl->start_win + tbl->win_size) & + (MAX_TID_VALUE - 1)); - del_timer(&rx_reor_tbl_ptr->timer_context.timer); + del_timer(&tbl->timer_context.timer); spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_del(&rx_reor_tbl_ptr->list); + list_del(&tbl->list); spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - kfree(rx_reor_tbl_ptr->rx_reorder_ptr); - kfree(rx_reor_tbl_ptr); + kfree(tbl->rx_reorder_ptr); + kfree(tbl); } /* @@ -157,16 +151,15 @@ mwifiex_11n_delete_rx_reorder_tbl_entry(struct mwifiex_private *priv, static struct mwifiex_rx_reorder_tbl * mwifiex_11n_get_rx_reorder_tbl(struct mwifiex_private *priv, int tid, u8 *ta) { - struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; + struct mwifiex_rx_reorder_tbl *tbl; unsigned long flags; spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); - list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) { - if ((!memcmp(rx_reor_tbl_ptr->ta, ta, ETH_ALEN)) - && (rx_reor_tbl_ptr->tid == tid)) { + list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) { + if (!memcmp(tbl->ta, ta, ETH_ALEN) && tbl->tid == tid) { spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - return rx_reor_tbl_ptr; + return tbl; } } spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); @@ -200,22 +193,19 @@ mwifiex_11n_find_last_seq_num(struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr) static void mwifiex_flush_data(unsigned long context) { - struct reorder_tmr_cnxt *reorder_cnxt = + struct reorder_tmr_cnxt *ctx = (struct reorder_tmr_cnxt *) context; int start_win; - start_win = mwifiex_11n_find_last_seq_num(reorder_cnxt->ptr); + start_win = mwifiex_11n_find_last_seq_num(ctx->ptr); if (start_win < 0) return; - dev_dbg(reorder_cnxt->priv->adapter->dev, "info: flush data %d\n", - start_win); - mwifiex_11n_dispatch_pkt_until_start_win(reorder_cnxt->priv, - reorder_cnxt->ptr, - ((reorder_cnxt->ptr->start_win - + start_win + 1) & - (MAX_TID_VALUE - 1))); + dev_dbg(ctx->priv->adapter->dev, "info: flush data %d\n", start_win); + mwifiex_11n_dispatch_pkt(ctx->priv, ctx->ptr, + (ctx->ptr->start_win + start_win + 1) & + (MAX_TID_VALUE - 1)); } /* @@ -233,7 +223,7 @@ mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, int tid, int win_size, int seq_num) { int i; - struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr, *new_node; + struct mwifiex_rx_reorder_tbl *tbl, *new_node; u16 last_seq = 0; unsigned long flags; @@ -241,13 +231,12 @@ mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, * If we get a TID, ta pair which is already present dispatch all the * the packets and move the window size until the ssn */ - rx_reor_tbl_ptr = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); - if (rx_reor_tbl_ptr) { - mwifiex_11n_dispatch_pkt_until_start_win(priv, rx_reor_tbl_ptr, - seq_num); + tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); + if (tbl) { + mwifiex_11n_dispatch_pkt(priv, tbl, seq_num); return; } - /* if !rx_reor_tbl_ptr then create one */ + /* if !tbl then create one */ new_node = kzalloc(sizeof(struct mwifiex_rx_reorder_tbl), GFP_KERNEL); if (!new_node) { dev_err(priv->adapter->dev, "%s: failed to alloc new_node\n", @@ -404,24 +393,23 @@ 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 *rx_reor_tbl_ptr; + struct mwifiex_rx_reorder_tbl *tbl; int start_win, end_win, win_size; u16 pkt_index; - rx_reor_tbl_ptr = - mwifiex_11n_get_rx_reorder_tbl((struct mwifiex_private *) priv, - tid, ta); - if (!rx_reor_tbl_ptr) { + tbl = mwifiex_11n_get_rx_reorder_tbl((struct mwifiex_private *) priv, + tid, ta); + if (!tbl) { if (pkt_type != PKT_TYPE_BAR) mwifiex_process_rx_packet(priv->adapter, payload); return 0; } - start_win = rx_reor_tbl_ptr->start_win; - win_size = rx_reor_tbl_ptr->win_size; + start_win = tbl->start_win; + win_size = tbl->win_size; end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); - del_timer(&rx_reor_tbl_ptr->timer_context.timer); - mod_timer(&rx_reor_tbl_ptr->timer_context.timer, jiffies - + (MIN_FLUSH_TIMER_MS * win_size * HZ) / 1000); + del_timer(&tbl->timer_context.timer); + mod_timer(&tbl->timer_context.timer, + jiffies + (MIN_FLUSH_TIMER_MS * win_size * HZ) / 1000); /* * If seq_num is less then starting win then ignore and drop the @@ -452,8 +440,7 @@ int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *priv, start_win = (end_win - win_size) + 1; else start_win = (MAX_TID_VALUE - (win_size - seq_num)) + 1; - mwifiex_11n_dispatch_pkt_until_start_win(priv, - rx_reor_tbl_ptr, start_win); + mwifiex_11n_dispatch_pkt(priv, tbl, start_win); } if (pkt_type != PKT_TYPE_BAR) { @@ -462,17 +449,17 @@ int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *priv, else pkt_index = (seq_num+MAX_TID_VALUE) - start_win; - if (rx_reor_tbl_ptr->rx_reorder_ptr[pkt_index]) + if (tbl->rx_reorder_ptr[pkt_index]) return -1; - rx_reor_tbl_ptr->rx_reorder_ptr[pkt_index] = payload; + 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, rx_reor_tbl_ptr); + mwifiex_11n_scan_and_dispatch(priv, tbl); return 0; } @@ -486,7 +473,7 @@ void mwifiex_del_ba_tbl(struct mwifiex_private *priv, int tid, u8 *peer_mac, u8 type, int initiator) { - struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; + struct mwifiex_rx_reorder_tbl *tbl; struct mwifiex_tx_ba_stream_tbl *ptx_tbl; u8 cleanup_rx_reorder_tbl; unsigned long flags; @@ -500,14 +487,14 @@ mwifiex_del_ba_tbl(struct mwifiex_private *priv, int tid, u8 *peer_mac, "initiator=%d\n", peer_mac, tid, initiator); if (cleanup_rx_reorder_tbl) { - rx_reor_tbl_ptr = mwifiex_11n_get_rx_reorder_tbl(priv, tid, + tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, peer_mac); - if (!rx_reor_tbl_ptr) { + if (!tbl) { dev_dbg(priv->adapter->dev, "event: TID, TA not found in table\n"); return; } - mwifiex_11n_delete_rx_reorder_tbl_entry(priv, rx_reor_tbl_ptr); + mwifiex_del_rx_reorder_entry(priv, tbl); } else { ptx_tbl = mwifiex_get_ba_tbl(priv, tid, peer_mac); if (!ptx_tbl) { @@ -535,7 +522,7 @@ int mwifiex_ret_11n_addba_resp(struct mwifiex_private *priv, (struct host_cmd_ds_11n_addba_rsp *) &resp->params.add_ba_rsp; int tid, win_size; - struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; + 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); @@ -557,13 +544,12 @@ int mwifiex_ret_11n_addba_resp(struct mwifiex_private *priv, tid, add_ba_rsp->ssn, win_size); } else { dev_err(priv->adapter->dev, "ADDBA RSP: failed %pM tid=%d)\n", - add_ba_rsp->peer_mac_addr, tid); + add_ba_rsp->peer_mac_addr, tid); - rx_reor_tbl_ptr = mwifiex_11n_get_rx_reorder_tbl(priv, - tid, add_ba_rsp->peer_mac_addr); - if (rx_reor_tbl_ptr) - mwifiex_11n_delete_rx_reorder_tbl_entry(priv, - rx_reor_tbl_ptr); + 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; @@ -602,7 +588,7 @@ void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private *priv) list_for_each_entry_safe(del_tbl_ptr, tmp_node, &priv->rx_reorder_tbl_ptr, list) { spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); - mwifiex_11n_delete_rx_reorder_tbl_entry(priv, del_tbl_ptr); + mwifiex_del_rx_reorder_entry(priv, del_tbl_ptr); spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); } spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); |