Re: [PATCH 1/2] staging: rtl8192u: Refactoring setKey function

From: Greg KH
Date: Mon Apr 13 2020 - 08:53:24 EST


On Mon, Apr 13, 2020 at 03:01:28AM +0000, Camylla Goncalves Cantanheide wrote:
> Changes of the local variable value and
> modification in the seletive repetition structure.
>
> Signed-off-by: Camylla Goncalves Cantanheide <c.cantanheide@xxxxxxxxx>
> ---
> drivers/staging/rtl8192u/r8192U_core.c | 52 ++++++++++++--------------
> 1 file changed, 24 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
> index 9b8d85a4855d..87c02aee3854 100644
> --- a/drivers/staging/rtl8192u/r8192U_core.c
> +++ b/drivers/staging/rtl8192u/r8192U_core.c
> @@ -4880,7 +4880,7 @@ void EnableHWSecurityConfig8192(struct net_device *dev)
> void setKey(struct net_device *dev, u8 entryno, u8 keyindex, u16 keytype,
> u8 *macaddr, u8 defaultkey, u32 *keycontent)
> {
> - u32 target_command = 0;
> + u32 target_command = CAM_CONTENT_COUNT * entryno | BIT(31) | BIT(16);
> u32 target_content = 0;
> u16 us_config = 0;
> u8 i;
> @@ -4890,39 +4890,35 @@ void setKey(struct net_device *dev, u8 entryno, u8 keyindex, u16 keytype,
>
> RT_TRACE(COMP_SEC,
> "====>to %s, dev:%p, EntryNo:%d, KeyIndex:%d, KeyType:%d, MacAddr%pM\n",
> - __func__, dev, entryno, keyindex, keytype, macaddr);
> + __func__, dev, entryno, keyindex, keytype, macaddr);
>
> if (defaultkey)
> us_config |= BIT(15) | (keytype << 2);
> else
> us_config |= BIT(15) | (keytype << 2) | keyindex;
>
> - for (i = 0; i < CAM_CONTENT_COUNT; i++) {
> - target_command = i + CAM_CONTENT_COUNT * entryno;
> - target_command |= BIT(31) | BIT(16);
> -
> - if (i == 0) { /* MAC|Config */
> - target_content = (u32)(*(macaddr + 0)) << 16 |
> - (u32)(*(macaddr + 1)) << 24 |
> - (u32)us_config;
> -
> - write_nic_dword(dev, WCAMI, target_content);
> - write_nic_dword(dev, RWCAM, target_command);
> - } else if (i == 1) { /* MAC */
> - target_content = (u32)(*(macaddr + 2)) |
> - (u32)(*(macaddr + 3)) << 8 |
> - (u32)(*(macaddr + 4)) << 16 |
> - (u32)(*(macaddr + 5)) << 24;
> - write_nic_dword(dev, WCAMI, target_content);
> - write_nic_dword(dev, RWCAM, target_command);
> - } else {
> - /* Key Material */
> - if (keycontent) {
> - write_nic_dword(dev, WCAMI,
> - *(keycontent + i - 2));
> - write_nic_dword(dev, RWCAM, target_command);
> - }
> - }
> + target_content = macaddr[0] << 16 |
> + macaddr[0] << 24 |
> + (u32)us_config;
> +
> + write_nic_dword(dev, WCAMI, target_content);
> + write_nic_dword(dev, RWCAM, target_command++);
> +
> + /* MAC */
> + target_content = macaddr[2] |
> + macaddr[3] << 8 |
> + macaddr[4] << 16 |
> + macaddr[5] << 24;
> + write_nic_dword(dev, WCAMI, target_content);
> + write_nic_dword(dev, RWCAM, target_command++);
> +
> + /* Key Material */
> + if (!keycontent)
> + return;
> +
> + for (i = 2; i < CAM_CONTENT_COUNT; i++) {
> + write_nic_dword(dev, WCAMI, *keycontent++);
> + write_nic_dword(dev, RWCAM, target_command++);
> }
> }
>
> --
> 2.20.1
>
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Hi,

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