diff options
| author | Girish Gowli <c_ggowli@qti.qualcomm.com> | 2014-06-12 18:44:33 +0530 |
|---|---|---|
| committer | Akash Patel <c_akashp@qca.qualcomm.com> | 2014-06-21 02:10:04 -0700 |
| commit | 0fcad9b51b807bf56507a2fd5eefa92ebbbd8702 (patch) | |
| tree | 1b3e5754bd0081af2d842e17a6204d02f873a3a5 | |
| parent | 43fd52323d59803d9a67c475217052df2c22a40a (diff) | |
wlan: Add helper function hdd_priv_get_data for "compat" support
Compat handling is required for some ioctl handlers when used in
32U/64K environment.
Adding a common function hdd_priv_get_data() for compat handling
so that when the driver is part of 64-bit kernel, handlers can
use it to work with 32-bit userspace applications
Change-Id: Ifb1e2022301e6b34ae9c1a7aca89a891642d834e
CRs-Fixed: 681631
| -rw-r--r-- | CORE/HDD/inc/wlan_hdd_wext.h | 3 | ||||
| -rw-r--r-- | CORE/HDD/src/wlan_hdd_wext.c | 43 |
2 files changed, 46 insertions, 0 deletions
diff --git a/CORE/HDD/inc/wlan_hdd_wext.h b/CORE/HDD/inc/wlan_hdd_wext.h index 67883752dda6..b858ed6e58fb 100644 --- a/CORE/HDD/inc/wlan_hdd_wext.h +++ b/CORE/HDD/inc/wlan_hdd_wext.h @@ -386,6 +386,9 @@ extern int iw_set_var_ints_getnone(struct net_device *dev, struct iw_request_inf extern int iw_set_three_ints_getnone(struct net_device *dev, struct iw_request_info *info, union iwreq_data *wrqu, char *extra); +extern int hdd_priv_get_data(struct iw_point *p_priv_data, + union iwreq_data *wrqu); + extern VOS_STATUS wlan_hdd_get_linkspeed_for_peermac(hdd_adapter_t *pAdapter, tSirMacAddr macAddress); void hdd_clearRoamProfileIe( hdd_adapter_t *pAdapter); diff --git a/CORE/HDD/src/wlan_hdd_wext.c b/CORE/HDD/src/wlan_hdd_wext.c index 03d96dbcd2b0..bed31792b02f 100644 --- a/CORE/HDD/src/wlan_hdd_wext.c +++ b/CORE/HDD/src/wlan_hdd_wext.c @@ -616,6 +616,49 @@ static void *mem_alloc_copy_from_user_helper(const void *wrqu_data, size_t len) /**--------------------------------------------------------------------------- + \brief hdd_priv_get_data - + + Helper function to get compatible struct iw_point passed to ioctl + + \param - p_priv_data - pointer to iw_point struct to be filled + wrqu - Pointer to IOCTL Data received from userspace + + \return - 0 if p_priv_data successfully filled + error otherwise + + --------------------------------------------------------------------------*/ +int hdd_priv_get_data(struct iw_point *p_priv_data, + union iwreq_data *wrqu) +{ + if ((NULL == p_priv_data) || (NULL == wrqu)) { + return -EINVAL; + } + +#ifdef CONFIG_COMPAT + if (is_compat_task()) { + struct compat_iw_point *p_compat_priv_data; + + /* Compat task: typecast to compat structure and copy the members. */ + p_compat_priv_data = (struct compat_iw_point *) &wrqu->data; + + p_priv_data->pointer = compat_ptr(p_compat_priv_data->pointer); + p_priv_data->length = p_compat_priv_data->length; + p_priv_data->flags = p_compat_priv_data->flags; + } else { +#endif /* #ifdef CONFIG_COMPAT */ + + /* Non compat task: directly copy the structure. */ + memcpy(p_priv_data, &wrqu->data, sizeof(struct iw_point)); + +#ifdef CONFIG_COMPAT + } +#endif /* #ifdef CONFIG_COMPAT */ + + return 0; +} + +/**--------------------------------------------------------------------------- + \brief hdd_wlan_get_version() - This function use to get Wlan Driver, Firmware, & Hardware Version. |