| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1595351666-28193-6-git-send-email-pillair@codeaurora.org>
Date: Tue, 21 Jul 2020 22:44:24 +0530
From: Rakesh Pillai <pillair@...eaurora.org>
To: ath10k@...ts.infradead.org
Cc: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
kvalo@...eaurora.org, johannes@...solutions.net,
davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
dianders@...omium.org, evgreen@...omium.org,
Rakesh Pillai <pillair@...eaurora.org>
Subject: [RFC 5/7] ath10k: Handle the rx packet processing in thread
Add the support to handle the receive packet and
the tx completion processing in a thread context
if the feature has been enabled via module parameter.
Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1
Signed-off-by: Rakesh Pillai <pillair@...eaurora.org>
---
drivers/net/wireless/ath/ath10k/core.c | 8 ++++++
drivers/net/wireless/ath/ath10k/core.h | 4 +++
drivers/net/wireless/ath/ath10k/htt.h | 2 ++
drivers/net/wireless/ath/ath10k/htt_rx.c | 46 +++++++++++++++++++++++++++-----
drivers/net/wireless/ath/ath10k/snoc.c | 12 +++++++--
5 files changed, 64 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 2b520a0..4064fa2 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -668,6 +668,14 @@ static unsigned int ath10k_core_get_fw_feature_str(char *buf,
return scnprintf(buf, buf_len, "%s", ath10k_core_fw_feature_str[feat]);
}
+void ath10k_core_thread_post_event(struct ath10k_thread *thread,
+ enum ath10k_thread_events event)
+{
+ set_bit(event, thread->event_flags);
+ wake_up(&thread->wait_q);
+}
+EXPORT_SYMBOL(ath10k_core_thread_post_event);
+
int ath10k_core_thread_shutdown(struct ath10k *ar,
struct ath10k_thread *thread)
{
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 59bdf11..596d31b 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -974,6 +974,8 @@ struct ath10k_bus_params {
enum ath10k_thread_events {
ATH10K_THREAD_EVENT_SHUTDOWN,
+ ATH10K_THREAD_EVENT_RX_POST,
+ ATH10K_THREAD_EVENT_TX_POST,
ATH10K_THREAD_EVENT_MAX,
};
@@ -1294,6 +1296,8 @@ static inline bool ath10k_peer_stats_enabled(struct ath10k *ar)
extern unsigned long ath10k_coredump_mask;
+void ath10k_core_thread_post_event(struct ath10k_thread *thread,
+ enum ath10k_thread_events event);
int ath10k_core_thread_shutdown(struct ath10k *ar,
struct ath10k_thread *thread);
int ath10k_core_thread_init(struct ath10k *ar,
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index cad5949..e3cb723 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -1970,6 +1970,8 @@ struct ath10k_htt {
spinlock_t lock;
} rx_ring;
+ /* Protects access to in order indication queue */
+ spinlock_t rx_in_ord_q_lock;
unsigned int prefetch_len;
/* Protects access to pending_tx, num_pending_tx */
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index a4a6618..becbd56 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -796,6 +796,7 @@ int ath10k_htt_rx_alloc(struct ath10k_htt *htt)
timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0);
spin_lock_init(&htt->rx_ring.lock);
+ spin_lock_init(&htt->rx_in_ord_q_lock);
htt->rx_ring.fill_cnt = 0;
htt->rx_ring.sw_rd_idx.msdu_payld = 0;
@@ -2702,10 +2703,17 @@ static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
*/
if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
ath10k_txrx_tx_unref(htt, &tx_done);
- } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
- ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
- tx_done.msdu_id, tx_done.status);
- ath10k_txrx_tx_unref(htt, &tx_done);
+ } else {
+ if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
+ ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
+ tx_done.msdu_id, tx_done.status);
+ ath10k_txrx_tx_unref(htt, &tx_done);
+ continue;
+ }
+ if (ar->rx_thread_enable)
+ ath10k_core_thread_post_event(
+ &ar->rx_thread,
+ ATH10K_THREAD_EVENT_TX_POST);
}
}
@@ -3903,7 +3911,16 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
break;
}
case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
- skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
+ if (!ar->rx_thread_enable) {
+ skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
+ } else {
+ spin_lock_bh(&htt->rx_in_ord_q_lock);
+ skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
+ spin_unlock_bh(&htt->rx_in_ord_q_lock);
+ ath10k_core_thread_post_event(
+ &ar->rx_thread,
+ ATH10K_THREAD_EVENT_RX_POST);
+ }
return false;
}
case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
@@ -4032,6 +4049,23 @@ int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
}
EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
+static inline struct sk_buff *
+ath10k_htt_dequeue_in_ord_q(struct ath10k_htt *htt)
+{
+ struct ath10k *ar = htt->ar;
+ struct sk_buff *skb = NULL;
+
+ if (ar->rx_thread_enable) {
+ spin_lock_bh(&htt->rx_in_ord_q_lock);
+ skb = skb_dequeue(&htt->rx_in_ord_compl_q);
+ spin_unlock_bh(&htt->rx_in_ord_q_lock);
+ } else {
+ skb = skb_dequeue(&htt->rx_in_ord_compl_q);
+ }
+
+ return skb;
+}
+
int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
{
struct ath10k_htt *htt = &ar->htt;
@@ -4053,7 +4087,7 @@ int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
goto exit;
}
- while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
+ while ((skb = ath10k_htt_dequeue_in_ord_q(htt))) {
spin_lock_bh(&htt->rx_ring.lock);
ret = ath10k_htt_rx_in_ord_ind(ar, skb);
spin_unlock_bh(&htt->rx_ring.lock);
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index f01725b..3eb5eac 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -920,6 +920,7 @@ int ath10k_snoc_rx_thread_loop(void *data)
struct ath10k_thread *rx_thread = data;
struct ath10k *ar = rx_thread->ar;
bool shutdown = false;
+ u32 thread_budget = 8192;
ath10k_dbg(ar, ATH10K_DBG_SNOC, "rx thread started\n");
set_user_nice(current, -1);
@@ -927,8 +928,14 @@ int ath10k_snoc_rx_thread_loop(void *data)
while (!shutdown) {
wait_event_interruptible(
rx_thread->wait_q,
- (test_bit(ATH10K_THREAD_EVENT_SHUTDOWN,
+ (test_and_clear_bit(ATH10K_THREAD_EVENT_RX_POST,
+ rx_thread->event_flags) ||
+ test_and_clear_bit(ATH10K_THREAD_EVENT_TX_POST,
+ rx_thread->event_flags) ||
+ test_bit(ATH10K_THREAD_EVENT_SHUTDOWN,
rx_thread->event_flags)));
+
+ ath10k_htt_txrx_compl_task(ar, thread_budget);
if (test_and_clear_bit(ATH10K_THREAD_EVENT_SHUTDOWN,
rx_thread->event_flags))
shutdown = true;
@@ -1235,7 +1242,8 @@ static int ath10k_snoc_napi_poll(struct napi_struct *ctx, int budget)
ath10k_ce_enable_interrupt(ar, ce_id);
}
- done = ath10k_htt_txrx_compl_task(ar, budget);
+ if (!ar->rx_thread_enable)
+ done = ath10k_htt_txrx_compl_task(ar, budget);
if (done < budget)
napi_complete(ctx);
--
2.7.4
Powered by blists - more mailing lists