From 7baef812eb5f02ccacf6fac3888c1cfa36293e91 Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Sat, 21 Jan 2012 15:22:50 +0530 Subject: [PATCH] ath6kl: Define a structure for connection specific aggregation information This patch just groups connection specific aggregation information from struct aggr_info into a new structure (struct aggr_info_conn) so that, in softAP mode, this can be used when each connected station is made to have it's own aggregation state. Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/cfg80211.c | 2 +- drivers/net/wireless/ath/ath6kl/core.h | 11 +- drivers/net/wireless/ath/ath6kl/txrx.c | 166 +++++++++++---------- 3 files changed, 98 insertions(+), 81 deletions(-) diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c index 594d246da8e1..8bf447a6a84e 100644 --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c @@ -2694,7 +2694,7 @@ void ath6kl_cfg80211_stop_all(struct ath6kl *ar) static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif) { - vif->aggr_cntxt = aggr_init(vif->ndev); + vif->aggr_cntxt = aggr_init(vif); if (!vif->aggr_cntxt) { ath6kl_err("failed to initialize aggr\n"); return -ENOMEM; diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h index 67b22e4bbcc2..1b9054f8f4e4 100644 --- a/drivers/net/wireless/ath/ath6kl/core.h +++ b/drivers/net/wireless/ath/ath6kl/core.h @@ -242,14 +242,19 @@ struct rxtid_stats { u32 num_bar; }; -struct aggr_info { +struct aggr_info_conn { u8 aggr_sz; u8 timer_scheduled; struct timer_list timer; struct net_device *dev; struct rxtid rx_tid[NUM_OF_TIDS]; - struct sk_buff_head free_q; struct rxtid_stats stat[NUM_OF_TIDS]; + struct aggr_info *aggr_info; +}; + +struct aggr_info { + struct aggr_info_conn *aggr_conn; + struct sk_buff_head rx_amsdu_freeq; }; struct ath6kl_wep_key { @@ -707,7 +712,7 @@ struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar); void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie); int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev); -struct aggr_info *aggr_init(struct net_device *dev); +struct aggr_info *aggr_init(struct ath6kl_vif *vif); void ath6kl_rx_refill(struct htc_target *target, enum htc_endpoint_id endpoint); void ath6kl_refill_amsdu_rxbufs(struct ath6kl *ar, int count); diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c index cb7421a31619..8407d0103dcd 100644 --- a/drivers/net/wireless/ath/ath6kl/txrx.c +++ b/drivers/net/wireless/ath/ath6kl/txrx.c @@ -819,10 +819,12 @@ static struct sk_buff *aggr_get_free_skb(struct aggr_info *p_aggr) { struct sk_buff *skb = NULL; - if (skb_queue_len(&p_aggr->free_q) < (AGGR_NUM_OF_FREE_NETBUFS >> 2)) - ath6kl_alloc_netbufs(&p_aggr->free_q, AGGR_NUM_OF_FREE_NETBUFS); + if (skb_queue_len(&p_aggr->rx_amsdu_freeq) < + (AGGR_NUM_OF_FREE_NETBUFS >> 2)) + ath6kl_alloc_netbufs(&p_aggr->rx_amsdu_freeq, + AGGR_NUM_OF_FREE_NETBUFS); - skb = skb_dequeue(&p_aggr->free_q); + skb = skb_dequeue(&p_aggr->rx_amsdu_freeq); return skb; } @@ -998,12 +1000,14 @@ static void aggr_deque_frms(struct aggr_info *p_aggr, u8 tid, struct skb_hold_q *node; u16 idx, idx_end, seq_end; struct rxtid_stats *stats; + struct aggr_info_conn *agg_conn; - if (!p_aggr) + if (!p_aggr || !p_aggr->aggr_conn) return; - rxtid = &p_aggr->rx_tid[tid]; - stats = &p_aggr->stat[tid]; + agg_conn = p_aggr->aggr_conn; + rxtid = &agg_conn->rx_tid[tid]; + stats = &agg_conn->stat[tid]; idx = AGGR_WIN_IDX(rxtid->seq_next, rxtid->hold_q_sz); @@ -1048,7 +1052,7 @@ static void aggr_deque_frms(struct aggr_info *p_aggr, u8 tid, stats->num_delivered += skb_queue_len(&rxtid->q); while ((skb = skb_dequeue(&rxtid->q))) - ath6kl_deliver_frames_to_nw_stack(p_aggr->dev, skb); + ath6kl_deliver_frames_to_nw_stack(agg_conn->dev, skb); } static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, @@ -1062,9 +1066,10 @@ static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, u16 idx, st, cur, end; bool is_queued = false; u16 extended_end; + struct aggr_info_conn *agg_conn = agg_info->aggr_conn; - rxtid = &agg_info->rx_tid[tid]; - stats = &agg_info->stat[tid]; + rxtid = &agg_conn->rx_tid[tid]; + stats = &agg_conn->stat[tid]; stats->num_into_aggr++; @@ -1074,7 +1079,7 @@ static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, is_queued = true; stats->num_amsdu++; while ((skb = skb_dequeue(&rxtid->q))) - ath6kl_deliver_frames_to_nw_stack(agg_info->dev, + ath6kl_deliver_frames_to_nw_stack(agg_conn->dev, skb); } return is_queued; @@ -1152,7 +1157,7 @@ static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, aggr_deque_frms(agg_info, tid, 0, 1); - if (agg_info->timer_scheduled) + if (agg_conn->timer_scheduled) rxtid->progress = true; else for (idx = 0 ; idx < rxtid->hold_q_sz; idx++) { @@ -1163,8 +1168,8 @@ static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, * the frame doesn't remain stuck * forever. */ - agg_info->timer_scheduled = true; - mod_timer(&agg_info->timer, + agg_conn->timer_scheduled = true; + mod_timer(&agg_conn->timer, (jiffies + HZ * (AGGR_RX_TIMEOUT) / 1000)); rxtid->progress = false; @@ -1525,13 +1530,13 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet) static void aggr_timeout(unsigned long arg) { u8 i, j; - struct aggr_info *p_aggr = (struct aggr_info *) arg; + struct aggr_info_conn *aggr_conn = (struct aggr_info_conn *) arg; struct rxtid *rxtid; struct rxtid_stats *stats; for (i = 0; i < NUM_OF_TIDS; i++) { - rxtid = &p_aggr->rx_tid[i]; - stats = &p_aggr->stat[i]; + rxtid = &aggr_conn->rx_tid[i]; + stats = &aggr_conn->stat[i]; if (!rxtid->aggr || !rxtid->timer_mon || rxtid->progress) continue; @@ -1542,18 +1547,18 @@ static void aggr_timeout(unsigned long arg) rxtid->seq_next, ((rxtid->seq_next + rxtid->hold_q_sz-1) & ATH6KL_MAX_SEQ_NO)); - aggr_deque_frms(p_aggr, i, 0, 0); + aggr_deque_frms(aggr_conn->aggr_info, i, 0, 0); } - p_aggr->timer_scheduled = false; + aggr_conn->timer_scheduled = false; for (i = 0; i < NUM_OF_TIDS; i++) { - rxtid = &p_aggr->rx_tid[i]; + rxtid = &aggr_conn->rx_tid[i]; if (rxtid->aggr && rxtid->hold_q) { for (j = 0; j < rxtid->hold_q_sz; j++) { if (rxtid->hold_q[j].skb) { - p_aggr->timer_scheduled = true; + aggr_conn->timer_scheduled = true; rxtid->timer_mon = true; rxtid->progress = false; break; @@ -1565,24 +1570,24 @@ static void aggr_timeout(unsigned long arg) } } - if (p_aggr->timer_scheduled) - mod_timer(&p_aggr->timer, + if (aggr_conn->timer_scheduled) + mod_timer(&aggr_conn->timer, jiffies + msecs_to_jiffies(AGGR_RX_TIMEOUT)); } -static void aggr_delete_tid_state(struct aggr_info *p_aggr, u8 tid) +static void aggr_delete_tid_state(struct aggr_info_conn *aggr_conn, u8 tid) { struct rxtid *rxtid; struct rxtid_stats *stats; - if (!p_aggr || tid >= NUM_OF_TIDS) + if (!aggr_conn || tid >= NUM_OF_TIDS) return; - rxtid = &p_aggr->rx_tid[tid]; - stats = &p_aggr->stat[tid]; + rxtid = &aggr_conn->rx_tid[tid]; + stats = &aggr_conn->stat[tid]; if (rxtid->aggr) - aggr_deque_frms(p_aggr, tid, 0, 0); + aggr_deque_frms(aggr_conn->aggr_info, tid, 0, 0); rxtid->aggr = false; rxtid->progress = false; @@ -1601,22 +1606,25 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no, u8 win_sz) { struct aggr_info *p_aggr = vif->aggr_cntxt; + struct aggr_info_conn *aggr_conn; struct rxtid *rxtid; struct rxtid_stats *stats; u16 hold_q_size; - if (!p_aggr) + if (!p_aggr || !p_aggr->aggr_conn) return; - rxtid = &p_aggr->rx_tid[tid]; - stats = &p_aggr->stat[tid]; + aggr_conn = p_aggr->aggr_conn; + + rxtid = &aggr_conn->rx_tid[tid]; + stats = &aggr_conn->stat[tid]; if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX) ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n", __func__, win_sz, tid); if (rxtid->aggr) - aggr_delete_tid_state(p_aggr, tid); + aggr_delete_tid_state(aggr_conn, tid); rxtid->seq_next = seq_no; hold_q_size = TID_WINDOW_SZ(win_sz) * sizeof(struct skb_hold_q); @@ -1632,31 +1640,23 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no, rxtid->aggr = true; } -struct aggr_info *aggr_init(struct net_device *dev) +static void aggr_conn_init(struct ath6kl_vif *vif, + struct aggr_info_conn *aggr_conn) { - struct aggr_info *p_aggr = NULL; struct rxtid *rxtid; u8 i; - p_aggr = kzalloc(sizeof(struct aggr_info), GFP_KERNEL); - if (!p_aggr) { - ath6kl_err("failed to alloc memory for aggr_node\n"); - return NULL; - } - - p_aggr->aggr_sz = AGGR_SZ_DEFAULT; - p_aggr->dev = dev; - init_timer(&p_aggr->timer); - p_aggr->timer.function = aggr_timeout; - p_aggr->timer.data = (unsigned long) p_aggr; - - p_aggr->timer_scheduled = false; - skb_queue_head_init(&p_aggr->free_q); + aggr_conn->aggr_sz = AGGR_SZ_DEFAULT; + aggr_conn->dev = vif->ndev; + init_timer(&aggr_conn->timer); + aggr_conn->timer.function = aggr_timeout; + aggr_conn->timer.data = (unsigned long) aggr_conn; + aggr_conn->aggr_info = vif->aggr_cntxt; - ath6kl_alloc_netbufs(&p_aggr->free_q, AGGR_NUM_OF_FREE_NETBUFS); + aggr_conn->timer_scheduled = false; for (i = 0; i < NUM_OF_TIDS; i++) { - rxtid = &p_aggr->rx_tid[i]; + rxtid = &aggr_conn->rx_tid[i]; rxtid->aggr = false; rxtid->progress = false; rxtid->timer_mon = false; @@ -1664,6 +1664,30 @@ struct aggr_info *aggr_init(struct net_device *dev) spin_lock_init(&rxtid->lock); } +} + +struct aggr_info *aggr_init(struct ath6kl_vif *vif) +{ + struct aggr_info *p_aggr = NULL; + + p_aggr = kzalloc(sizeof(struct aggr_info), GFP_KERNEL); + if (!p_aggr) { + ath6kl_err("failed to alloc memory for aggr_node\n"); + return NULL; + } + + p_aggr->aggr_conn = kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL); + if (!p_aggr->aggr_conn) { + ath6kl_err("failed to alloc memory for connection specific aggr info\n"); + kfree(p_aggr); + return NULL; + } + + aggr_conn_init(vif, p_aggr->aggr_conn); + + skb_queue_head_init(&p_aggr->rx_amsdu_freeq); + ath6kl_alloc_netbufs(&p_aggr->rx_amsdu_freeq, AGGR_NUM_OF_FREE_NETBUFS); + return p_aggr; } @@ -1671,27 +1695,32 @@ void aggr_recv_delba_req_evt(struct ath6kl_vif *vif, u8 tid) { struct aggr_info *p_aggr = vif->aggr_cntxt; struct rxtid *rxtid; + struct aggr_info_conn *aggr_conn; - if (!p_aggr) + if (!p_aggr || !p_aggr->aggr_conn) return; - rxtid = &p_aggr->rx_tid[tid]; + aggr_conn = p_aggr->aggr_conn; + rxtid = &aggr_conn->rx_tid[tid]; if (rxtid->aggr) - aggr_delete_tid_state(p_aggr, tid); + aggr_delete_tid_state(aggr_conn, tid); } void aggr_reset_state(struct aggr_info *aggr_info) { u8 tid; - if (aggr_info->timer_scheduled) { - del_timer(&aggr_info->timer); - aggr_info->timer_scheduled = false; + if (!aggr_info || !aggr_info->aggr_conn) + return; + + if (aggr_info->aggr_conn->timer_scheduled) { + del_timer(&aggr_info->aggr_conn->timer); + aggr_info->aggr_conn->timer_scheduled = false; } for (tid = 0; tid < NUM_OF_TIDS; tid++) - aggr_delete_tid_state(aggr_info, tid); + aggr_delete_tid_state(aggr_info->aggr_conn, tid); } /* clean up our amsdu buffer list */ @@ -1718,28 +1747,11 @@ void ath6kl_cleanup_amsdu_rxbufs(struct ath6kl *ar) void aggr_module_destroy(struct aggr_info *aggr_info) { - struct rxtid *rxtid; - u8 i, k; - - if (!aggr_info) + if (!aggr_info || !aggr_info->aggr_conn) return; - if (aggr_info->timer_scheduled) { - del_timer(&aggr_info->timer); - aggr_info->timer_scheduled = false; - } - - for (i = 0; i < NUM_OF_TIDS; i++) { - rxtid = &aggr_info->rx_tid[i]; - if (rxtid->hold_q) { - for (k = 0; k < rxtid->hold_q_sz; k++) - dev_kfree_skb(rxtid->hold_q[k].skb); - kfree(rxtid->hold_q); - } - - skb_queue_purge(&rxtid->q); - } - - skb_queue_purge(&aggr_info->free_q); + aggr_reset_state(aggr_info); + skb_queue_purge(&aggr_info->rx_amsdu_freeq); + kfree(aggr_info->aggr_conn); kfree(aggr_info); } -- 2.30.2