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path: root/drivers/net/wireless/ath/ath9k/recv.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/recv.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/recv.c82
1 files changed, 43 insertions, 39 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 0e666fbe0842..1c4583c7ff7c 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -169,22 +169,17 @@ static void ath_rx_addbuffer_edma(struct ath_softc *sc,
enum ath9k_rx_qtype qtype, int size)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- u32 nbuf = 0;
+ struct ath_buf *bf, *tbf;
if (list_empty(&sc->rx.rxbuf)) {
ath_dbg(common, QUEUE, "No free rx buf available\n");
return;
}
- while (!list_empty(&sc->rx.rxbuf)) {
- nbuf++;
-
+ list_for_each_entry_safe(bf, tbf, &sc->rx.rxbuf, list)
if (!ath_rx_edma_buf_link(sc, qtype))
break;
- if (nbuf >= size)
- break;
- }
}
static void ath_rx_remove_buffer(struct ath_softc *sc,
@@ -232,7 +227,6 @@ static void ath_rx_edma_cleanup(struct ath_softc *sc)
static void ath_rx_edma_init_queue(struct ath_rx_edma *rx_edma, int size)
{
skb_queue_head_init(&rx_edma->rx_fifo);
- skb_queue_head_init(&rx_edma->rx_buffers);
rx_edma->rx_fifo_hwsize = size;
}
@@ -658,7 +652,9 @@ static void ath_rx_ps(struct ath_softc *sc, struct sk_buff *skb, bool mybeacon)
}
static bool ath_edma_get_buffers(struct ath_softc *sc,
- enum ath9k_rx_qtype qtype)
+ enum ath9k_rx_qtype qtype,
+ struct ath_rx_status *rs,
+ struct ath_buf **dest)
{
struct ath_rx_edma *rx_edma = &sc->rx.rx_edma[qtype];
struct ath_hw *ah = sc->sc_ah;
@@ -677,7 +673,7 @@ static bool ath_edma_get_buffers(struct ath_softc *sc,
dma_sync_single_for_cpu(sc->dev, bf->bf_buf_addr,
common->rx_bufsize, DMA_FROM_DEVICE);
- ret = ath9k_hw_process_rxdesc_edma(ah, NULL, skb->data);
+ ret = ath9k_hw_process_rxdesc_edma(ah, rs, skb->data);
if (ret == -EINPROGRESS) {
/*let device gain the buffer again*/
dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
@@ -690,20 +686,21 @@ static bool ath_edma_get_buffers(struct ath_softc *sc,
/* corrupt descriptor, skip this one and the following one */
list_add_tail(&bf->list, &sc->rx.rxbuf);
ath_rx_edma_buf_link(sc, qtype);
- skb = skb_peek(&rx_edma->rx_fifo);
- if (!skb)
- return true;
- bf = SKB_CB_ATHBUF(skb);
- BUG_ON(!bf);
+ skb = skb_peek(&rx_edma->rx_fifo);
+ if (skb) {
+ bf = SKB_CB_ATHBUF(skb);
+ BUG_ON(!bf);
- __skb_unlink(skb, &rx_edma->rx_fifo);
- list_add_tail(&bf->list, &sc->rx.rxbuf);
- ath_rx_edma_buf_link(sc, qtype);
- return true;
+ __skb_unlink(skb, &rx_edma->rx_fifo);
+ list_add_tail(&bf->list, &sc->rx.rxbuf);
+ ath_rx_edma_buf_link(sc, qtype);
+ } else {
+ bf = NULL;
+ }
}
- skb_queue_tail(&rx_edma->rx_buffers, skb);
+ *dest = bf;
return true;
}
@@ -711,18 +708,15 @@ static struct ath_buf *ath_edma_get_next_rx_buf(struct ath_softc *sc,
struct ath_rx_status *rs,
enum ath9k_rx_qtype qtype)
{
- struct ath_rx_edma *rx_edma = &sc->rx.rx_edma[qtype];
- struct sk_buff *skb;
- struct ath_buf *bf;
+ struct ath_buf *bf = NULL;
- while (ath_edma_get_buffers(sc, qtype));
- skb = __skb_dequeue(&rx_edma->rx_buffers);
- if (!skb)
- return NULL;
+ while (ath_edma_get_buffers(sc, qtype, rs, &bf)) {
+ if (!bf)
+ continue;
- bf = SKB_CB_ATHBUF(skb);
- ath9k_hw_process_rxdesc_edma(sc->sc_ah, rs, skb->data);
- return bf;
+ return bf;
+ }
+ return NULL;
}
static struct ath_buf *ath_get_next_rx_buf(struct ath_softc *sc,
@@ -822,6 +816,14 @@ static bool ath9k_rx_accept(struct ath_common *common,
(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_CRC | ATH9K_RXERR_MIC |
ATH9K_RXERR_KEYMISS));
+ /*
+ * Key miss events are only relevant for pairwise keys where the
+ * descriptor does contain a valid key index. This has been observed
+ * mostly with CCMP encryption.
+ */
+ if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID)
+ rx_stats->rs_status &= ~ATH9K_RXERR_KEYMISS;
+
if (!rx_stats->rs_datalen)
return false;
/*
@@ -946,6 +948,7 @@ static void ath9k_process_rssi(struct ath_common *common,
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = common->ah;
int last_rssi;
+ int rssi = rx_stats->rs_rssi;
if (!rx_stats->is_mybeacon ||
((ah->opmode != NL80211_IFTYPE_STATION) &&
@@ -957,13 +960,12 @@ static void ath9k_process_rssi(struct ath_common *common,
last_rssi = sc->last_rssi;
if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
- rx_stats->rs_rssi = ATH_EP_RND(last_rssi,
- ATH_RSSI_EP_MULTIPLIER);
- if (rx_stats->rs_rssi < 0)
- rx_stats->rs_rssi = 0;
+ rssi = ATH_EP_RND(last_rssi, ATH_RSSI_EP_MULTIPLIER);
+ if (rssi < 0)
+ rssi = 0;
/* Update Beacon RSSI, this is used by ANI. */
- ah->stats.avgbrssi = rx_stats->rs_rssi;
+ ah->stats.avgbrssi = rssi;
}
/*
@@ -980,8 +982,6 @@ static int ath9k_rx_skb_preprocess(struct ath_common *common,
{
struct ath_hw *ah = common->ah;
- memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
-
/*
* everything but the rate is checked here, the rate check is done
* separately to avoid doing two lookups for a rate for each frame.
@@ -1003,6 +1003,8 @@ static int ath9k_rx_skb_preprocess(struct ath_common *common,
rx_status->signal = ah->noise + rx_stats->rs_rssi;
rx_status->antenna = rx_stats->rs_antenna;
rx_status->flag |= RX_FLAG_MACTIME_MPDU;
+ if (rx_stats->rs_moreaggr)
+ rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
return 0;
}
@@ -1837,6 +1839,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
if (sc->sc_flags & SC_OP_RXFLUSH)
goto requeue_drop_frag;
+ memset(rxs, 0, sizeof(struct ieee80211_rx_status));
+
rxs->mactime = (tsf & ~0xffffffffULL) | rs.rs_tstamp;
if (rs.rs_tstamp > tsf_lower &&
unlikely(rs.rs_tstamp - tsf_lower > 0x10000000))
@@ -1909,13 +1913,13 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
if (sc->rx.frag) {
int space = skb->len - skb_tailroom(hdr_skb);
- sc->rx.frag = NULL;
-
if (pskb_expand_head(hdr_skb, 0, space, GFP_ATOMIC) < 0) {
dev_kfree_skb(skb);
goto requeue_drop_frag;
}
+ sc->rx.frag = NULL;
+
skb_copy_from_linear_data(skb, skb_put(hdr_skb, skb->len),
skb->len);
dev_kfree_skb_any(skb);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-19 07:35:23 +0300