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mac80211: Use a shared function to release frames from RX reorder buf

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No need to duplicate the same code in two places (and that would be
three after the followup patch).

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-05-05 20:35:13 +03:00 committed by John W. Linville
parent 358623c22c
commit 2d3babd11f
1 changed files with 31 additions and 39 deletions
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70
net/mac80211/rx.c
View file

@ -2284,6 +2284,34 @@ static inline u16 seq_sub(u16 sq1, u16 sq2)
}
static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
struct tid_ampdu_rx *tid_agg_rx,
int index)
{
struct ieee80211_supported_band *sband;
struct ieee80211_rate *rate;
struct ieee80211_rx_status status;
if (!tid_agg_rx->reorder_buf[index])
goto no_frame;
/* release the reordered frames to stack */
memcpy(&status, tid_agg_rx->reorder_buf[index]->cb, sizeof(status));
sband = hw->wiphy->bands[status.band];
if (status.flag & RX_FLAG_HT)
rate = sband->bitrates; /* TODO: HT rates */
else
rate = &sband->bitrates[status.rate_idx];
__ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
&status, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
no_frame:
tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
}
/*
* As it function blongs to Rx path it must be called with
* the proper rcu_read_lock protection for its flow.
@ -2295,12 +2323,8 @@ static u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
u16 mpdu_seq_num,
int bar_req)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rx_status status;
u16 head_seq_num, buf_size;
int index;
struct ieee80211_supported_band *sband;
struct ieee80211_rate *rate;
buf_size = tid_agg_rx->buf_size;
head_seq_num = tid_agg_rx->head_seq_num;
@ -2325,28 +2349,8 @@ static u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
index = seq_sub(tid_agg_rx->head_seq_num,
tid_agg_rx->ssn)
% tid_agg_rx->buf_size;
if (tid_agg_rx->reorder_buf[index]) {
/* release the reordered frames to stack */
memcpy(&status,
tid_agg_rx->reorder_buf[index]->cb,
sizeof(status));
sband = local->hw.wiphy->bands[status.band];
if (status.flag & RX_FLAG_HT) {
/* TODO: HT rates */
rate = sband->bitrates;
} else {
rate = &sband->bitrates
[status.rate_idx];
}
__ieee80211_rx_handle_packet(hw,
tid_agg_rx->reorder_buf[index],
&status, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
}
tid_agg_rx->head_seq_num =
seq_inc(tid_agg_rx->head_seq_num);
ieee80211_release_reorder_frame(hw, tid_agg_rx,
index);
}
if (bar_req)
return 1;
@ -2380,19 +2384,7 @@ static u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn)
% tid_agg_rx->buf_size;
while (tid_agg_rx->reorder_buf[index]) {
/* release the reordered frame back to stack */
memcpy(&status, tid_agg_rx->reorder_buf[index]->cb,
sizeof(status));
sband = local->hw.wiphy->bands[status.band];
if (status.flag & RX_FLAG_HT)
rate = sband->bitrates; /* TODO: HT rates */
else
rate = &sband->bitrates[status.rate_idx];
__ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
&status, rate);
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
ieee80211_release_reorder_frame(hw, tid_agg_rx, index);
index = seq_sub(tid_agg_rx->head_seq_num,
tid_agg_rx->ssn) % tid_agg_rx->buf_size;
}