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wil6210: add support for headroom configuration

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Add module parameter for configuring the headroom size
in the skb allocation.

Change-Id: Ie0190a6c8fa19c7121ad77b8a9a913ce876800fe
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
[liord@codeaurora.org: SPDX license]
Signed-off-by: Lior David <liord@codeaurora.org>
This commit is contained in:
Alexei Avshalom Lazar 2019-12-04 10:12:47 +02:00
commit 60742fce45
3 changed files with 32 additions and 26 deletions
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41
drivers/net/wireless/ath/wil6210/txrx.c
View file

@ -1,18 +1,7 @@
// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/etherdevice.h>
@ -41,6 +30,32 @@ MODULE_PARM_DESC(rx_large_buf, " allocate 8KB RX buffers, default - no");
/* Drop Tx packets in case Tx ring is full */
bool drop_if_ring_full;
#define WIL6210_MAX_HEADROOM_SIZE (256)
ushort headroom_size; /* = 0; */
static int headroom_size_set(const char *val, const struct kernel_param *kp)
{
int ret;
ret = param_set_uint(val, kp);
if (ret)
return ret;
if (headroom_size > WIL6210_MAX_HEADROOM_SIZE)
return -EINVAL;
return 0;
}
static const struct kernel_param_ops headroom_ops = {
.set = headroom_size_set,
.get = param_get_ushort,
};
module_param_cb(headroom_size, &headroom_ops, &headroom_size, 0644);
MODULE_PARM_DESC(headroom_size,
" headroom size for rx skb allocation, default - 0");
static inline uint wil_rx_snaplen(void)
{
return rx_align_2 ? 6 : 0;
@ -623,7 +638,7 @@ static int wil_rx_refill(struct wil6210_priv *wil, int count)
u32 next_tail;
int rc = 0;
int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ?
WIL6210_RTAP_SIZE : 0;
WIL6210_RTAP_SIZE : headroom_size;
for (; next_tail = wil_ring_next_tail(v),
(next_tail != v->swhead) && (count-- > 0);

16
drivers/net/wireless/ath/wil6210/txrx_edma.c
View file

@ -1,17 +1,6 @@
// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/etherdevice.h>
@ -182,10 +171,11 @@ static int wil_ring_alloc_skb_edma(struct wil6210_priv *wil,
return -EAGAIN;
}
skb = dev_alloc_skb(sz);
skb = dev_alloc_skb(sz + headroom_size);
if (unlikely(!skb))
return -ENOMEM;
skb_reserve(skb, headroom_size);
skb_put(skb, sz);
/**

1
drivers/net/wireless/ath/wil6210/wil6210.h
View file

@ -28,6 +28,7 @@ extern bool rx_large_buf;
extern bool debug_fw;
extern bool disable_ap_sme;
extern bool ftm_mode;
extern ushort headroom_size;
extern bool drop_if_ring_full;
extern uint max_assoc_sta;