LinuxLists.cc - [PATCH] mwifiex: add device specific ioctl handler

2017-09-20 06:44:24

Subject: [PATCH] mwifiex: add device specific ioctl handler

From: Xinming Hu <[email protected]>

Add net_dev ndo_do_ioctl handler, which could be used for
downloading host command by utility in manufactory test

Signed-off-by: Xinming Hu <[email protected]>
Signed-off-by: Cathy Luo <[email protected]>
Signed-off-by: Ganapathi Bhat <[email protected]>
---
drivers/net/wireless/marvell/mwifiex/cmdevt.c | 59 +++++++++++++++++++++++++++
drivers/net/wireless/marvell/mwifiex/main.c | 23 +++++++++++
drivers/net/wireless/marvell/mwifiex/main.h | 7 +++-
3 files changed, 88 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 0edc5d6..86ee399 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -839,6 +839,8 @@ int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
hostcmd = adapter->curr_cmd->data_buf;
hostcmd->len = size;
memcpy(hostcmd->cmd, resp, size);
+ adapter->hostcmd_resp_data.len = size;
+ memcpy(adapter->hostcmd_resp_data.cmd, resp, size);
}
}
orig_cmdresp_no = le16_to_cpu(resp->command);
@@ -1221,6 +1223,63 @@ int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
}
EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);

+/* This function get hostcmd data from userspace and construct a cmd
+ * to be download to FW.
+ */
+int mwifiex_process_host_command(struct mwifiex_private *priv,
+ struct ifreq *req)
+{
+ struct mwifiex_ds_misc_cmd *hostcmd_buf;
+ struct host_cmd_ds_command *cmd;
+ struct mwifiex_adapter *adapter = priv->adapter;
+ int ret;
+
+ hostcmd_buf = kzalloc(sizeof(*hostcmd_buf), GFP_KERNEL);
+ if (!hostcmd_buf)
+ return -ENOMEM;
+
+ cmd = (void *)hostcmd_buf->cmd;
+
+ if (copy_from_user(cmd, req->ifr_data,
+ sizeof(cmd->command) + sizeof(cmd->size))) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ hostcmd_buf->len = le16_to_cpu(cmd->size);
+ if (hostcmd_buf->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ if (copy_from_user(cmd, req->ifr_data, hostcmd_buf->len)) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ if (mwifiex_send_cmd(priv, 0, 0, 0, hostcmd_buf, true)) {
+ dev_err(priv->adapter->dev, "Failed to process hostcmd\n");
+ ret = -EFAULT;
+ goto done;
+ }
+
+ if (adapter->hostcmd_resp_data.len > hostcmd_buf->len) {
+ ret = -EFBIG;
+ goto done;
+ }
+
+ if (copy_to_user(req->ifr_data, adapter->hostcmd_resp_data.cmd,
+ adapter->hostcmd_resp_data.len)) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ ret = 0;
+done:
+ kfree(hostcmd_buf);
+ return ret;
+}
+
/*
* This function handles the command response of a sleep confirm command.
*
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index ee40b73..3e7700f 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1265,12 +1265,35 @@ static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
return mwifiex_1d_to_wmm_queue[skb->priority];
}

+static int mwifiex_do_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
+{
+ struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
+ int ret;
+
+ if (!priv->adapter->mfg_mode)
+ return -EINVAL;
+
+ mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
+
+ switch (cmd) {
+ case MWIFIEX_HOSTCMD_IOCTL:
+ ret = mwifiex_process_host_command(priv, req);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
/* Network device handlers */
static const struct net_device_ops mwifiex_netdev_ops = {
.ndo_open = mwifiex_open,
.ndo_stop = mwifiex_close,
.ndo_start_xmit = mwifiex_hard_start_xmit,
.ndo_set_mac_address = mwifiex_ndo_set_mac_address,
+ .ndo_do_ioctl = mwifiex_do_ioctl,
.ndo_validate_addr = eth_validate_addr,
.ndo_tx_timeout = mwifiex_tx_timeout,
.ndo_get_stats = mwifiex_get_stats,
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index a76bd79..4639f49 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -160,6 +160,9 @@ enum {
/* Threshold for tx_timeout_cnt before we trigger a card reset */
#define TX_TIMEOUT_THRESHOLD 6

+/* IOCTL number used for hostcmd process*/
+#define MWIFIEX_HOSTCMD_IOCTL (SIOCDEVPRIVATE + 1)
+
#define MWIFIEX_DRV_INFO_SIZE_MAX 0x40000

/* Address alignment */
@@ -912,6 +915,7 @@ struct mwifiex_adapter {
u8 event_received;
u8 data_received;
u16 seq_num;
+ struct mwifiex_ds_misc_cmd hostcmd_resp_data;
struct cmd_ctrl_node *cmd_pool;
struct cmd_ctrl_node *curr_cmd;
/* spin lock for command */
@@ -1611,7 +1615,8 @@ int mwifiex_get_tdls_list(struct mwifiex_private *priv,
u8 mwifiex_get_center_freq_index(struct mwifiex_private *priv, u8 band,
u32 pri_chan, u8 chan_bw);
int mwifiex_init_channel_scan_gap(struct mwifiex_adapter *adapter);
-
+int mwifiex_process_host_command(struct mwifiex_private *priv,
+ struct ifreq *req);
int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb);
void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv);
void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
--
1.9.1

2017-09-20 08:39:41

by Arend Van Spriel

[permalink] [raw]

Subject: Re: [PATCH] mwifiex: add device specific ioctl handler

On 9/20/2017 8:44 AM, Xinming Hu wrote:
> From: Xinming Hu <[email protected]>
>
> Add net_dev ndo_do_ioctl handler, which could be used for
> downloading host command by utility in manufactory test

Not sure if we want ioctls in upstream wireless drivers. You could look
at nl80211 vendor commands, but that is also under scrutiny if common
wifi functionality is provided by it. I am pretty sure Kalle has his
ideas about this :-)

Regards,
Arend

2017-09-20 08:06:34

by Souptick Joarder

[permalink] [raw]

Subject: Re: [PATCH] mwifiex: add device specific ioctl handler

On Wed, Sep 20, 2017 at 12:14 PM, Xinming Hu <[email protected]> wrote:
> From: Xinming Hu <[email protected]>
>
> Add net_dev ndo_do_ioctl handler, which could be used for
> downloading host command by utility in manufactory test
>
> Signed-off-by: Xinming Hu <[email protected]>
> Signed-off-by: Cathy Luo <[email protected]>
> Signed-off-by: Ganapathi Bhat <[email protected]>
> ---
> drivers/net/wireless/marvell/mwifiex/cmdevt.c | 59 +++++++++++++++++++++++++++
> drivers/net/wireless/marvell/mwifiex/main.c | 23 +++++++++++
> drivers/net/wireless/marvell/mwifiex/main.h | 7 +++-
> 3 files changed, 88 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> index 0edc5d6..86ee399 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> @@ -839,6 +839,8 @@ int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
> hostcmd = adapter->curr_cmd->data_buf;
> hostcmd->len = size;
> memcpy(hostcmd->cmd, resp, size);
> + adapter->hostcmd_resp_data.len = size;
> + memcpy(adapter->hostcmd_resp_data.cmd, resp, size);
> }
> }
> orig_cmdresp_no = le16_to_cpu(resp->command);
> @@ -1221,6 +1223,63 @@ int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
> }
> EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
>
> +/* This function get hostcmd data from userspace and construct a cmd
> + * to be download to FW.
> + */
> +int mwifiex_process_host_command(struct mwifiex_private *priv,
> + struct ifreq *req)
> +{
> + struct mwifiex_ds_misc_cmd *hostcmd_buf;
> + struct host_cmd_ds_command *cmd;
> + struct mwifiex_adapter *adapter = priv->adapter;
> + int ret;
> +
> + hostcmd_buf = kzalloc(sizeof(*hostcmd_buf), GFP_KERNEL);

will it be sizeof(*hostcmd_buf) or sizeof( struct mwifiex_ds_misc_cmd *) ?

> + if (!hostcmd_buf)
> + return -ENOMEM;
> +
> + cmd = (void *)hostcmd_buf->cmd;
> +
> + if (copy_from_user(cmd, req->ifr_data,
> + sizeof(cmd->command) + sizeof(cmd->size))) {
> + ret = -EFAULT;
> + goto done;
> + }
> +
> + hostcmd_buf->len = le16_to_cpu(cmd->size);
> + if (hostcmd_buf->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
> + ret = -EINVAL;
> + goto done;
> + }
> +
> + if (copy_from_user(cmd, req->ifr_data, hostcmd_buf->len)) {
> + ret = -EFAULT;
> + goto done;
> + }
> +
> + if (mwifiex_send_cmd(priv, 0, 0, 0, hostcmd_buf, true)) {
> + dev_err(priv->adapter->dev, "Failed to process hostcmd\n");
> + ret = -EFAULT;
> + goto done;
> + }
> +
> + if (adapter->hostcmd_resp_data.len > hostcmd_buf->len) {
> + ret = -EFBIG;
> + goto done;
> + }
> +
> + if (copy_to_user(req->ifr_data, adapter->hostcmd_resp_data.cmd,
> + adapter->hostcmd_resp_data.len)) {
> + ret = -EFAULT;
> + goto done;
> + }
> +
> + ret = 0;
> +done:
> + kfree(hostcmd_buf);
> + return ret;
> +}
> +
> /*
> * This function handles the command response of a sleep confirm command.
> *
> diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
> index ee40b73..3e7700f 100644
> --- a/drivers/net/wireless/marvell/mwifiex/main.c
> +++ b/drivers/net/wireless/marvell/mwifiex/main.c
> @@ -1265,12 +1265,35 @@ static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
> return mwifiex_1d_to_wmm_queue[skb->priority];
> }
>
> +static int mwifiex_do_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
> +{
> + struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
> + int ret;
> +
> + if (!priv->adapter->mfg_mode)
> + return -EINVAL;

ret can be used instead of returning -EINVAL.

> +
> + mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
> +
> + switch (cmd) {
> + case MWIFIEX_HOSTCMD_IOCTL:
> + ret = mwifiex_process_host_command(priv, req);
> + break;
> + default:
> + ret = -EINVAL;
> + break;
> + }
> +
> + return ret;
> +}
> +
> /* Network device handlers */
> static const struct net_device_ops mwifiex_netdev_ops = {
> .ndo_open = mwifiex_open,
> .ndo_stop = mwifiex_close,
> .ndo_start_xmit = mwifiex_hard_start_xmit,
> .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
> + .ndo_do_ioctl = mwifiex_do_ioctl,
> .ndo_validate_addr = eth_validate_addr,
> .ndo_tx_timeout = mwifiex_tx_timeout,
> .ndo_get_stats = mwifiex_get_stats,
> diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
> index a76bd79..4639f49 100644
> --- a/drivers/net/wireless/marvell/mwifiex/main.h
> +++ b/drivers/net/wireless/marvell/mwifiex/main.h
> @@ -160,6 +160,9 @@ enum {
> /* Threshold for tx_timeout_cnt before we trigger a card reset */
> #define TX_TIMEOUT_THRESHOLD 6
>
> +/* IOCTL number used for hostcmd process*/
> +#define MWIFIEX_HOSTCMD_IOCTL (SIOCDEVPRIVATE + 1)
> +
> #define MWIFIEX_DRV_INFO_SIZE_MAX 0x40000
>
> /* Address alignment */
> @@ -912,6 +915,7 @@ struct mwifiex_adapter {
> u8 event_received;
> u8 data_received;
> u16 seq_num;
> + struct mwifiex_ds_misc_cmd hostcmd_resp_data;
> struct cmd_ctrl_node *cmd_pool;
> struct cmd_ctrl_node *curr_cmd;
> /* spin lock for command */
> @@ -1611,7 +1615,8 @@ int mwifiex_get_tdls_list(struct mwifiex_private *priv,
> u8 mwifiex_get_center_freq_index(struct mwifiex_private *priv, u8 band,
> u32 pri_chan, u8 chan_bw);
> int mwifiex_init_channel_scan_gap(struct mwifiex_adapter *adapter);
> -
> +int mwifiex_process_host_command(struct mwifiex_private *priv,
> + struct ifreq *req);
> int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb);
> void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv);
> void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
> --
> 1.9.1
>

2017-09-23 02:30:08

by kernel test robot

[permalink] [raw]

Subject: Re: [PATCH] mwifiex: add device specific ioctl handler

Hi Xinming,

[auto build test ERROR on wireless-drivers-next/master]
[also build test ERROR on v4.14-rc1 next-20170922]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Xinming-Hu/mwifiex-add-device-specific-ioctl-handler/20170923-094243
base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master
config: x86_64-randconfig-x000-201738 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All error/warnings (new ones prefixed by >>):

In file included from drivers/net/wireless/marvell/mwifiex/main.c:22:0:
drivers/net/wireless/marvell/mwifiex/main.c: In function 'mwifiex_do_ioctl':
drivers/net/wireless/marvell/mwifiex/main.h:209:24: error: pasting "MWIFIEX_DBG_" and ""ioctl cmd = 0x%x\n"" does not give a valid preprocessing token
_mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
^
>> drivers/net/wireless/marvell/mwifiex/main.c:1276:2: note: in expansion of macro 'mwifiex_dbg'
mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
^~~~~~~~~~~
>> drivers/net/wireless/marvell/mwifiex/main.h:209:24: error: 'MWIFIEX_DBG_' undeclared (first use in this function)
_mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
^
>> drivers/net/wireless/marvell/mwifiex/main.c:1276:2: note: in expansion of macro 'mwifiex_dbg'
mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
^~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/main.h:209:24: note: each undeclared identifier is reported only once for each function it appears in
_mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
^
>> drivers/net/wireless/marvell/mwifiex/main.c:1276:2: note: in expansion of macro 'mwifiex_dbg'
mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
^~~~~~~~~~~
>> drivers/net/wireless/marvell/mwifiex/main.c:1276:29: error: expected ')' before string constant
mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
^
drivers/net/wireless/marvell/mwifiex/main.h:209:38: note: in definition of macro 'mwifiex_dbg'
_mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
^~~~
>> drivers/net/wireless/marvell/mwifiex/main.h:209:2: error: too few arguments to function '_mwifiex_dbg'
_mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
^
>> drivers/net/wireless/marvell/mwifiex/main.c:1276:2: note: in expansion of macro 'mwifiex_dbg'
mwifiex_dbg(priv->adapter, "ioctl cmd = 0x%x\n", cmd);
^~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/main.h:206:6: note: declared here
void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
^~~~~~~~~~~~

vim +209 drivers/net/wireless/marvell/mwifiex/main.h

c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 200
c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 201 #define MWIFIEX_DEFAULT_DEBUG_MASK (MWIFIEX_DBG_MSG | \
c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 202 MWIFIEX_DBG_FATAL | \
c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 203 MWIFIEX_DBG_ERROR)
c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 204
36925e52c drivers/net/wireless/mwifiex/main.h Joe Perches 2015-08-31 205 __printf(3, 4)
36925e52c drivers/net/wireless/mwifiex/main.h Joe Perches 2015-08-31 206 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
36925e52c drivers/net/wireless/mwifiex/main.h Joe Perches 2015-08-31 207 const char *fmt, ...);
36925e52c drivers/net/wireless/mwifiex/main.h Joe Perches 2015-08-31 208 #define mwifiex_dbg(adapter, mask, fmt, ...) \
36925e52c drivers/net/wireless/mwifiex/main.h Joe Perches 2015-08-31 @209 _mwifiex_dbg(adapter, MWIFIEX_DBG_##mask, fmt, ##__VA_ARGS__)
c687a0077 drivers/net/wireless/mwifiex/main.h Zhaoyang Liu 2015-05-12 210

:::::: The code at line 209 was first introduced by commit
:::::: 36925e52c5ac9d10a553d1339e13a61bfbdd4ba4 mwifiex: Make mwifiex_dbg a function, reduce object size

:::::: TO: Joe Perches <[email protected]>
:::::: CC: Kalle Valo <[email protected]>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation

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2017-09-23 03:01:28

by kernel test robot

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Subject: Re: [PATCH] mwifiex: add device specific ioctl handler

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2017-09-20 11:38:56

by Kalle Valo

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Subject: Re: [PATCH] mwifiex: add device specific ioctl handler

Arend van Spriel <[email protected]> writes:

> On 9/20/2017 8:44 AM, Xinming Hu wrote:
>> From: Xinming Hu <[email protected]>
>>
>> Add net_dev ndo_do_ioctl handler, which could be used for
>> downloading host command by utility in manufactory test
>
> Not sure if we want ioctls in upstream wireless drivers.

Yeah, patches adding ioctls to wireless drivers are automatically
rejected.

> You could look at nl80211 vendor commands, but that is also under
> scrutiny if common wifi functionality is provided by it. I am pretty
> sure Kalle has his ideas about this :-)

For manufacturing tests we have nl80211 testmode command and event.
There are upstream drivers already using it so you even have examples.

--
Kalle Valo

2017-09-20 09:11:54

by Xinming Hu

[permalink] [raw]

Subject: RE: [EXT] Re: [PATCH] mwifiex: add device specific ioctl handler

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