| Message ID | 1480499414-19543-1-git-send-email-mohammed@qca.qualcomm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Kalle Valo |
| Headers | show |
Heh, I had to do something like this for freebsd too for my ath10k port. So thanks. :) Suggestion - take a look at where tasklets, completions, locks, etc are all re-allocated multiple times, once upon initial VAP bringup. I had to also undo this in FreeBSD, as we don't allow re-init of tasks, completions, callouts and locks without first freeing/zero'ing them appropriately. :) -adrian On 30 November 2016 at 01:50, Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> wrote: > From: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> > > With maximum number of vap's configured in a two radio supported > systems of ~256 Mb RAM, doing a continuous wifi down/up and > intermittent traffic streaming from the connected stations results > in failure to allocate contiguous memory for tx buffers. This results > in the disappearance of all VAP's and a manual reboot is needed as > this is not a crash (or) OOM(for OOM killer to be invoked). To address > this allocate contiguous memory for tx buffers one time and re-use them > until the modules are unloaded but this results in a slight increase in > memory footprint of ath10k when the wifi is down, but the modules are > still loaded. Also as of now we use a separate bool 'tx_mem_allocated' > to keep track of the one time memory allocation, as we cannot come up > with something like 'ath10k_tx_{register,unregister}' before > 'ath10k_probe_fw' is called as 'ath10k_htt_tx_alloc_cont_frag_desc' > memory allocation is dependent on the hw_param 'continuous_frag_desc' > > a) memory footprint of ath10k without the change > > lsmod | grep ath10k > ath10k_core 414498 1 ath10k_pci > ath10k_pci 38236 0 > > b) memory footprint of ath10k with the change > > ath10k_core 414980 1 ath10k_pci > ath10k_pci 38236 0 > > Memory Failure Call trace: > > hostapd: page allocation failure: order:6, mode:0xd0 > [<c021f150>] (__dma_alloc_buffer.isra.23) from > [<c021f23c>] (__alloc_remap_buffer.isra.26+0x14/0xb8) > [<c021f23c>] (__alloc_remap_buffer.isra.26) from > [<c021f664>] (__dma_alloc+0x224/0x2b8) > [<c021f664>] (__dma_alloc) from [<c021f810>] > (arm_dma_alloc+0x84/0x90) > [<c021f810>] (arm_dma_alloc) from [<bf954764>] > (ath10k_htt_tx_alloc+0xe0/0x2e4 [ath10k_core]) > [<bf954764>] (ath10k_htt_tx_alloc [ath10k_core]) from > [<bf94e6ac>] (ath10k_core_start+0x538/0xcf8 [ath10k_core]) > [<bf94e6ac>] (ath10k_core_start [ath10k_core]) from > [<bf947eec>] (ath10k_start+0xbc/0x56c [ath10k_core]) > [<bf947eec>] (ath10k_start [ath10k_core]) from > [<bf8a7a04>] (drv_start+0x40/0x5c [mac80211]) > [<bf8a7a04>] (drv_start [mac80211]) from [<bf8b7cf8>] > (ieee80211_do_open+0x170/0x82c [mac80211]) > [<bf8b7cf8>] (ieee80211_do_open [mac80211]) from > [<c056afc8>] (__dev_open+0xa0/0xf4) > [21053.491752] Normal: 641*4kB (UEMR) 505*8kB (UEMR) 330*16kB (UEMR) > 126*32kB (UEMR) 762*64kB (UEMR) 237*128kB (UEMR) 1*256kB (M) 0*512kB > 0*1024kB 0*2048kB 0*4096kB = 95276kB > > Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> > --- > drivers/net/wireless/ath/ath10k/core.c | 5 +-- > drivers/net/wireless/ath/ath10k/htt.h | 6 +++- > drivers/net/wireless/ath/ath10k/htt_tx.c | 54 +++++++++++++++++++++++++------- > 3 files changed, 51 insertions(+), 14 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c > index 5bc6847..f7ea4de 100644 > --- a/drivers/net/wireless/ath/ath10k/core.c > +++ b/drivers/net/wireless/ath/ath10k/core.c > @@ -1857,7 +1857,7 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode, > goto err_wmi_detach; > } > > - status = ath10k_htt_tx_alloc(&ar->htt); > + status = ath10k_htt_tx_start(&ar->htt); > if (status) { > ath10k_err(ar, "failed to alloc htt tx: %d\n", status); > goto err_wmi_detach; > @@ -2052,7 +2052,7 @@ void ath10k_core_stop(struct ath10k *ar) > ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR); > > ath10k_hif_stop(ar); > - ath10k_htt_tx_free(&ar->htt); > + ath10k_htt_tx_stop(&ar->htt); > ath10k_htt_rx_free(&ar->htt); > ath10k_wmi_detach(ar); > } > @@ -2385,6 +2385,7 @@ void ath10k_core_destroy(struct ath10k *ar) > destroy_workqueue(ar->workqueue_aux); > > ath10k_debug_destroy(ar); > + ath10k_htt_tx_destroy(&ar->htt); > ath10k_wmi_free_host_mem(ar); > ath10k_mac_destroy(ar); > } > diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h > index 0d2ed09..96bf7bf 100644 > --- a/drivers/net/wireless/ath/ath10k/htt.h > +++ b/drivers/net/wireless/ath/ath10k/htt.h > @@ -1692,6 +1692,8 @@ struct ath10k_htt { > enum htt_tx_mode_switch_mode mode; > enum htt_q_depth_type type; > } tx_q_state; > + > + bool tx_mem_allocated; > }; > > #define RX_HTT_HDR_STATUS_LEN 64 > @@ -1754,7 +1756,9 @@ struct htt_rx_desc { > int ath10k_htt_init(struct ath10k *ar); > int ath10k_htt_setup(struct ath10k_htt *htt); > > -int ath10k_htt_tx_alloc(struct ath10k_htt *htt); > +int ath10k_htt_tx_start(struct ath10k_htt *htt); > +void ath10k_htt_tx_stop(struct ath10k_htt *htt); > +void ath10k_htt_tx_destroy(struct ath10k_htt *htt); > void ath10k_htt_tx_free(struct ath10k_htt *htt); > > int ath10k_htt_rx_alloc(struct ath10k_htt *htt); > diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c > index ccbc8c03..27e49db 100644 > --- a/drivers/net/wireless/ath/ath10k/htt_tx.c > +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c > @@ -350,21 +350,15 @@ static int ath10k_htt_tx_alloc_txdone_fifo(struct ath10k_htt *htt) > return ret; > } > > -int ath10k_htt_tx_alloc(struct ath10k_htt *htt) > +static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt) > { > struct ath10k *ar = htt->ar; > int ret; > > - ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", > - htt->max_num_pending_tx); > - > - spin_lock_init(&htt->tx_lock); > - idr_init(&htt->pending_tx); > - > ret = ath10k_htt_tx_alloc_cont_txbuf(htt); > if (ret) { > ath10k_err(ar, "failed to alloc cont tx buffer: %d\n", ret); > - goto free_idr_pending_tx; > + return ret; > } > > ret = ath10k_htt_tx_alloc_cont_frag_desc(htt); > @@ -396,6 +390,31 @@ int ath10k_htt_tx_alloc(struct ath10k_htt *htt) > free_txbuf: > ath10k_htt_tx_free_cont_txbuf(htt); > > + return ret; > +} > + > +int ath10k_htt_tx_start(struct ath10k_htt *htt) > +{ > + struct ath10k *ar = htt->ar; > + int ret; > + > + ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", > + htt->max_num_pending_tx); > + > + spin_lock_init(&htt->tx_lock); > + idr_init(&htt->pending_tx); > + > + if (htt->tx_mem_allocated) > + return 0; > + > + ret = ath10k_htt_tx_alloc_buf(htt); > + if (ret) > + goto free_idr_pending_tx; > + > + htt->tx_mem_allocated = true; > + > + return 0; > + > free_idr_pending_tx: > idr_destroy(&htt->pending_tx); > > @@ -418,15 +437,28 @@ static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx) > return 0; > } > > -void ath10k_htt_tx_free(struct ath10k_htt *htt) > +void ath10k_htt_tx_destroy(struct ath10k_htt *htt) > { > - idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); > - idr_destroy(&htt->pending_tx); > + if (!htt->tx_mem_allocated) > + return; > > ath10k_htt_tx_free_cont_txbuf(htt); > ath10k_htt_tx_free_txq(htt); > ath10k_htt_tx_free_cont_frag_desc(htt); > ath10k_htt_tx_free_txdone_fifo(htt); > + htt->tx_mem_allocated = false; > +} > + > +void ath10k_htt_tx_stop(struct ath10k_htt *htt) > +{ > + idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); > + idr_destroy(&htt->pending_tx); > +} > + > +void ath10k_htt_tx_free(struct ath10k_htt *htt) > +{ > + ath10k_htt_tx_stop(htt); > + ath10k_htt_tx_destroy(htt); > } > > void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb) > -- > 1.9.1 > > > _______________________________________________ > ath10k mailing list > ath10k@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/ath10k
Hi Adrian, On Wed, Nov 30, 2016 at 10:27:25AM -0800, Adrian Chadd wrote: > Heh, I had to do something like this for freebsd too for my ath10k > port. So thanks. :) [shafi] thanks :):) > > Suggestion - take a look at where tasklets, completions, locks, etc > are all re-allocated multiple times, once upon initial VAP bringup. I > had to also undo this in FreeBSD, as we don't allow re-init of tasks, > completions, callouts and locks without first freeing/zero'ing them > appropriately. :) > > [shafi] sure, I just added some basic debug prints In ath10k_htt_tx_start and init tx_lock and pending_tx In ath10k_htt_tx_start and tx mem allocated set to true In ath10k_htt_tx_start and init tx_lock and pending_tx (initialized second time) In ath10k_htt_tx_start and tx mem is already allocated In ath10k_htt_tx_destroy and tx mem allocated set to false But I see 'ath10k_htt_tx_stop' is called when the interface is brought down and in that scenario we need to do 'idr_init(&htt->pending_tx) ' ? while doing a tx_lock might be a duplicate. Also if i understand correctly the existing ath10k already calls tx buffer allocation twice via 4 2145 core.c <<ath10k_core_probe_fw>> ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL, 5 4471 mac.c <<ath10k_start>> ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL, Also there is a suggestion to enhance this patch using DMA API's (thanks Michal) and we will work on this once this goes fine without any issues regards, shafi > > > > On 30 November 2016 at 01:50, Mohammed Shafi Shajakhan > <mohammed@qti.qualcomm.com> wrote: > > From: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> > > > > With maximum number of vap's configured in a two radio supported > > systems of ~256 Mb RAM, doing a continuous wifi down/up and > > intermittent traffic streaming from the connected stations results > > in failure to allocate contiguous memory for tx buffers. This results > > in the disappearance of all VAP's and a manual reboot is needed as > > this is not a crash (or) OOM(for OOM killer to be invoked). To address > > this allocate contiguous memory for tx buffers one time and re-use them > > until the modules are unloaded but this results in a slight increase in > > memory footprint of ath10k when the wifi is down, but the modules are > > still loaded. Also as of now we use a separate bool 'tx_mem_allocated' > > to keep track of the one time memory allocation, as we cannot come up > > with something like 'ath10k_tx_{register,unregister}' before > > 'ath10k_probe_fw' is called as 'ath10k_htt_tx_alloc_cont_frag_desc' > > memory allocation is dependent on the hw_param 'continuous_frag_desc' > > > > a) memory footprint of ath10k without the change > > > > lsmod | grep ath10k > > ath10k_core 414498 1 ath10k_pci > > ath10k_pci 38236 0 > > > > b) memory footprint of ath10k with the change > > > > ath10k_core 414980 1 ath10k_pci > > ath10k_pci 38236 0 > > > > Memory Failure Call trace: > > > > hostapd: page allocation failure: order:6, mode:0xd0 > > [<c021f150>] (__dma_alloc_buffer.isra.23) from > > [<c021f23c>] (__alloc_remap_buffer.isra.26+0x14/0xb8) > > [<c021f23c>] (__alloc_remap_buffer.isra.26) from > > [<c021f664>] (__dma_alloc+0x224/0x2b8) > > [<c021f664>] (__dma_alloc) from [<c021f810>] > > (arm_dma_alloc+0x84/0x90) > > [<c021f810>] (arm_dma_alloc) from [<bf954764>] > > (ath10k_htt_tx_alloc+0xe0/0x2e4 [ath10k_core]) > > [<bf954764>] (ath10k_htt_tx_alloc [ath10k_core]) from > > [<bf94e6ac>] (ath10k_core_start+0x538/0xcf8 [ath10k_core]) > > [<bf94e6ac>] (ath10k_core_start [ath10k_core]) from > > [<bf947eec>] (ath10k_start+0xbc/0x56c [ath10k_core]) > > [<bf947eec>] (ath10k_start [ath10k_core]) from > > [<bf8a7a04>] (drv_start+0x40/0x5c [mac80211]) > > [<bf8a7a04>] (drv_start [mac80211]) from [<bf8b7cf8>] > > (ieee80211_do_open+0x170/0x82c [mac80211]) > > [<bf8b7cf8>] (ieee80211_do_open [mac80211]) from > > [<c056afc8>] (__dev_open+0xa0/0xf4) > > [21053.491752] Normal: 641*4kB (UEMR) 505*8kB (UEMR) 330*16kB (UEMR) > > 126*32kB (UEMR) 762*64kB (UEMR) 237*128kB (UEMR) 1*256kB (M) 0*512kB > > 0*1024kB 0*2048kB 0*4096kB = 95276kB > > > > Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> > > --- > > drivers/net/wireless/ath/ath10k/core.c | 5 +-- > > drivers/net/wireless/ath/ath10k/htt.h | 6 +++- > > drivers/net/wireless/ath/ath10k/htt_tx.c | 54 +++++++++++++++++++++++++------- > > 3 files changed, 51 insertions(+), 14 deletions(-) > > > > diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c > > index 5bc6847..f7ea4de 100644 > > --- a/drivers/net/wireless/ath/ath10k/core.c > > +++ b/drivers/net/wireless/ath/ath10k/core.c > > @@ -1857,7 +1857,7 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode, > > goto err_wmi_detach; > > } > > > > - status = ath10k_htt_tx_alloc(&ar->htt); > > + status = ath10k_htt_tx_start(&ar->htt); > > if (status) { > > ath10k_err(ar, "failed to alloc htt tx: %d\n", status); > > goto err_wmi_detach; > > @@ -2052,7 +2052,7 @@ void ath10k_core_stop(struct ath10k *ar) > > ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR); > > > > ath10k_hif_stop(ar); > > - ath10k_htt_tx_free(&ar->htt); > > + ath10k_htt_tx_stop(&ar->htt); > > ath10k_htt_rx_free(&ar->htt); > > ath10k_wmi_detach(ar); > > } > > @@ -2385,6 +2385,7 @@ void ath10k_core_destroy(struct ath10k *ar) > > destroy_workqueue(ar->workqueue_aux); > > > > ath10k_debug_destroy(ar); > > + ath10k_htt_tx_destroy(&ar->htt); > > ath10k_wmi_free_host_mem(ar); > > ath10k_mac_destroy(ar); > > } > > diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h > > index 0d2ed09..96bf7bf 100644 > > --- a/drivers/net/wireless/ath/ath10k/htt.h > > +++ b/drivers/net/wireless/ath/ath10k/htt.h > > @@ -1692,6 +1692,8 @@ struct ath10k_htt { > > enum htt_tx_mode_switch_mode mode; > > enum htt_q_depth_type type; > > } tx_q_state; > > + > > + bool tx_mem_allocated; > > }; > > > > #define RX_HTT_HDR_STATUS_LEN 64 > > @@ -1754,7 +1756,9 @@ struct htt_rx_desc { > > int ath10k_htt_init(struct ath10k *ar); > > int ath10k_htt_setup(struct ath10k_htt *htt); > > > > -int ath10k_htt_tx_alloc(struct ath10k_htt *htt); > > +int ath10k_htt_tx_start(struct ath10k_htt *htt); > > +void ath10k_htt_tx_stop(struct ath10k_htt *htt); > > +void ath10k_htt_tx_destroy(struct ath10k_htt *htt); > > void ath10k_htt_tx_free(struct ath10k_htt *htt); > > > > int ath10k_htt_rx_alloc(struct ath10k_htt *htt); > > diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c > > index ccbc8c03..27e49db 100644 > > --- a/drivers/net/wireless/ath/ath10k/htt_tx.c > > +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c > > @@ -350,21 +350,15 @@ static int ath10k_htt_tx_alloc_txdone_fifo(struct ath10k_htt *htt) > > return ret; > > } > > > > -int ath10k_htt_tx_alloc(struct ath10k_htt *htt) > > +static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt) > > { > > struct ath10k *ar = htt->ar; > > int ret; > > > > - ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", > > - htt->max_num_pending_tx); > > - > > - spin_lock_init(&htt->tx_lock); > > - idr_init(&htt->pending_tx); > > - > > ret = ath10k_htt_tx_alloc_cont_txbuf(htt); > > if (ret) { > > ath10k_err(ar, "failed to alloc cont tx buffer: %d\n", ret); > > - goto free_idr_pending_tx; > > + return ret; > > } > > > > ret = ath10k_htt_tx_alloc_cont_frag_desc(htt); > > @@ -396,6 +390,31 @@ int ath10k_htt_tx_alloc(struct ath10k_htt *htt) > > free_txbuf: > > ath10k_htt_tx_free_cont_txbuf(htt); > > > > + return ret; > > +} > > + > > +int ath10k_htt_tx_start(struct ath10k_htt *htt) > > +{ > > + struct ath10k *ar = htt->ar; > > + int ret; > > + > > + ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", > > + htt->max_num_pending_tx); > > + > > + spin_lock_init(&htt->tx_lock); > > + idr_init(&htt->pending_tx); > > + > > + if (htt->tx_mem_allocated) > > + return 0; > > + > > + ret = ath10k_htt_tx_alloc_buf(htt); > > + if (ret) > > + goto free_idr_pending_tx; > > + > > + htt->tx_mem_allocated = true; > > + > > + return 0; > > + > > free_idr_pending_tx: > > idr_destroy(&htt->pending_tx); > > > > @@ -418,15 +437,28 @@ static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx) > > return 0; > > } > > > > -void ath10k_htt_tx_free(struct ath10k_htt *htt) > > +void ath10k_htt_tx_destroy(struct ath10k_htt *htt) > > { > > - idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); > > - idr_destroy(&htt->pending_tx); > > + if (!htt->tx_mem_allocated) > > + return; > > > > ath10k_htt_tx_free_cont_txbuf(htt); > > ath10k_htt_tx_free_txq(htt); > > ath10k_htt_tx_free_cont_frag_desc(htt); > > ath10k_htt_tx_free_txdone_fifo(htt); > > + htt->tx_mem_allocated = false; > > +} > > + > > +void ath10k_htt_tx_stop(struct ath10k_htt *htt) > > +{ > > + idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); > > + idr_destroy(&htt->pending_tx); > > +} > > + > > +void ath10k_htt_tx_free(struct ath10k_htt *htt) > > +{ > > + ath10k_htt_tx_stop(htt); > > + ath10k_htt_tx_destroy(htt); > > } > > > > void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb) > > -- > > 1.9.1 > > > > > > _______________________________________________ > > ath10k mailing list > > ath10k@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/ath10k
Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> wrote: > From: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> > > With maximum number of vap's configured in a two radio supported > systems of ~256 Mb RAM, doing a continuous wifi down/up and > intermittent traffic streaming from the connected stations results > in failure to allocate contiguous memory for tx buffers. This results > in the disappearance of all VAP's and a manual reboot is needed as > this is not a crash (or) OOM(for OOM killer to be invoked). To address > this allocate contiguous memory for tx buffers one time and re-use them > until the modules are unloaded but this results in a slight increase in > memory footprint of ath10k when the wifi is down, but the modules are > still loaded. Also as of now we use a separate bool 'tx_mem_allocated' > to keep track of the one time memory allocation, as we cannot come up > with something like 'ath10k_tx_{register,unregister}' before > 'ath10k_probe_fw' is called as 'ath10k_htt_tx_alloc_cont_frag_desc' > memory allocation is dependent on the hw_param 'continuous_frag_desc' > > a) memory footprint of ath10k without the change > > lsmod | grep ath10k > ath10k_core 414498 1 ath10k_pci > ath10k_pci 38236 0 > > b) memory footprint of ath10k with the change > > ath10k_core 414980 1 ath10k_pci > ath10k_pci 38236 0 > > Memory Failure Call trace: > > hostapd: page allocation failure: order:6, mode:0xd0 > [<c021f150>] (__dma_alloc_buffer.isra.23) from > [<c021f23c>] (__alloc_remap_buffer.isra.26+0x14/0xb8) > [<c021f23c>] (__alloc_remap_buffer.isra.26) from > [<c021f664>] (__dma_alloc+0x224/0x2b8) > [<c021f664>] (__dma_alloc) from [<c021f810>] > (arm_dma_alloc+0x84/0x90) > [<c021f810>] (arm_dma_alloc) from [<bf954764>] > (ath10k_htt_tx_alloc+0xe0/0x2e4 [ath10k_core]) > [<bf954764>] (ath10k_htt_tx_alloc [ath10k_core]) from > [<bf94e6ac>] (ath10k_core_start+0x538/0xcf8 [ath10k_core]) > [<bf94e6ac>] (ath10k_core_start [ath10k_core]) from > [<bf947eec>] (ath10k_start+0xbc/0x56c [ath10k_core]) > [<bf947eec>] (ath10k_start [ath10k_core]) from > [<bf8a7a04>] (drv_start+0x40/0x5c [mac80211]) > [<bf8a7a04>] (drv_start [mac80211]) from [<bf8b7cf8>] > (ieee80211_do_open+0x170/0x82c [mac80211]) > [<bf8b7cf8>] (ieee80211_do_open [mac80211]) from > [<c056afc8>] (__dev_open+0xa0/0xf4) > [21053.491752] Normal: 641*4kB (UEMR) 505*8kB (UEMR) 330*16kB (UEMR) > 126*32kB (UEMR) 762*64kB (UEMR) 237*128kB (UEMR) 1*256kB (M) 0*512kB > 0*1024kB 0*2048kB 0*4096kB = 95276kB > > Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> Patch applied to ath-next branch of ath.git, thanks. 9ec34a86195a ath10k: fix Tx DMA alloc failure during continuous wifi down/up
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 5bc6847..f7ea4de 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -1857,7 +1857,7 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode, goto err_wmi_detach; } - status = ath10k_htt_tx_alloc(&ar->htt); + status = ath10k_htt_tx_start(&ar->htt); if (status) { ath10k_err(ar, "failed to alloc htt tx: %d\n", status); goto err_wmi_detach; @@ -2052,7 +2052,7 @@ void ath10k_core_stop(struct ath10k *ar) ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR); ath10k_hif_stop(ar); - ath10k_htt_tx_free(&ar->htt); + ath10k_htt_tx_stop(&ar->htt); ath10k_htt_rx_free(&ar->htt); ath10k_wmi_detach(ar); } @@ -2385,6 +2385,7 @@ void ath10k_core_destroy(struct ath10k *ar) destroy_workqueue(ar->workqueue_aux); ath10k_debug_destroy(ar); + ath10k_htt_tx_destroy(&ar->htt); ath10k_wmi_free_host_mem(ar); ath10k_mac_destroy(ar); } diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 0d2ed09..96bf7bf 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -1692,6 +1692,8 @@ struct ath10k_htt { enum htt_tx_mode_switch_mode mode; enum htt_q_depth_type type; } tx_q_state; + + bool tx_mem_allocated; }; #define RX_HTT_HDR_STATUS_LEN 64 @@ -1754,7 +1756,9 @@ struct htt_rx_desc { int ath10k_htt_init(struct ath10k *ar); int ath10k_htt_setup(struct ath10k_htt *htt); -int ath10k_htt_tx_alloc(struct ath10k_htt *htt); +int ath10k_htt_tx_start(struct ath10k_htt *htt); +void ath10k_htt_tx_stop(struct ath10k_htt *htt); +void ath10k_htt_tx_destroy(struct ath10k_htt *htt); void ath10k_htt_tx_free(struct ath10k_htt *htt); int ath10k_htt_rx_alloc(struct ath10k_htt *htt); diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index ccbc8c03..27e49db 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -350,21 +350,15 @@ static int ath10k_htt_tx_alloc_txdone_fifo(struct ath10k_htt *htt) return ret; } -int ath10k_htt_tx_alloc(struct ath10k_htt *htt) +static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt) { struct ath10k *ar = htt->ar; int ret; - ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", - htt->max_num_pending_tx); - - spin_lock_init(&htt->tx_lock); - idr_init(&htt->pending_tx); - ret = ath10k_htt_tx_alloc_cont_txbuf(htt); if (ret) { ath10k_err(ar, "failed to alloc cont tx buffer: %d\n", ret); - goto free_idr_pending_tx; + return ret; } ret = ath10k_htt_tx_alloc_cont_frag_desc(htt); @@ -396,6 +390,31 @@ int ath10k_htt_tx_alloc(struct ath10k_htt *htt) free_txbuf: ath10k_htt_tx_free_cont_txbuf(htt); + return ret; +} + +int ath10k_htt_tx_start(struct ath10k_htt *htt) +{ + struct ath10k *ar = htt->ar; + int ret; + + ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", + htt->max_num_pending_tx); + + spin_lock_init(&htt->tx_lock); + idr_init(&htt->pending_tx); + + if (htt->tx_mem_allocated) + return 0; + + ret = ath10k_htt_tx_alloc_buf(htt); + if (ret) + goto free_idr_pending_tx; + + htt->tx_mem_allocated = true; + + return 0; + free_idr_pending_tx: idr_destroy(&htt->pending_tx); @@ -418,15 +437,28 @@ static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx) return 0; } -void ath10k_htt_tx_free(struct ath10k_htt *htt) +void ath10k_htt_tx_destroy(struct ath10k_htt *htt) { - idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); - idr_destroy(&htt->pending_tx); + if (!htt->tx_mem_allocated) + return; ath10k_htt_tx_free_cont_txbuf(htt); ath10k_htt_tx_free_txq(htt); ath10k_htt_tx_free_cont_frag_desc(htt); ath10k_htt_tx_free_txdone_fifo(htt); + htt->tx_mem_allocated = false; +} + +void ath10k_htt_tx_stop(struct ath10k_htt *htt) +{ + idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); + idr_destroy(&htt->pending_tx); +} + +void ath10k_htt_tx_free(struct ath10k_htt *htt) +{ + ath10k_htt_tx_stop(htt); + ath10k_htt_tx_destroy(htt); } void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb)