netdev - [PATCH 1/4] cdc_ether: use dev->intf to get interface information

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Tue, 14 Jul 2020 21:23:07 -0400
From:   Wxcafé <wxcafe@...afe.net>
To:     linux-usb@...r.kernel.org
Cc:     Miguel Rodríguez Pérez 
        <miguel@....uvigo.gal>, oliver@...kum.org, netdev@...r.kernel.org
Subject: [PATCH 1/4] cdc_ether: use dev->intf to get interface information

usbnet_cdc_update_filter was getting the interface number from the
usb_interface struct in cdc_state->control. However, cdc_ncm does
not initialize that structure in its bind function, but uses
cdc_ncm_cts instead. Getting intf directly from struct usbnet solves
the problem.

Signed-off-by: Miguel Rodríguez Pérez <miguel@....uvigo.gal>
---
 drivers/net/usb/cdc_ether.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index a657943c9f01..2afe258e3648 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -65,8 +65,6 @@ static const u8 mbm_guid[16] = {
 
 static void usbnet_cdc_update_filter(struct usbnet *dev)
 {
-	struct cdc_state	*info = (void *) &dev->data;
-	struct usb_interface	*intf = info->control;
 	struct net_device	*net = dev->net;
 
 	u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
@@ -86,7 +84,7 @@ static void usbnet_cdc_update_filter(struct usbnet *dev)
 			USB_CDC_SET_ETHERNET_PACKET_FILTER,
 			USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 			cdc_filter,
-			intf->cur_altsetting->desc.bInterfaceNumber,
+			dev->intf->cur_altsetting->desc.bInterfaceNumber,
 			NULL,
 			0,
 			USB_CTRL_SET_TIMEOUT
-- 
2.27.0


-- 
Wxcafé <wxcafe@...afe.net>