Re: [PROBLEM]: potential unaligned memory access indrivers/usb/gadget/rndis.c

From: Andrew Morton
Date: Thu Mar 12 2009 - 02:53:43 EST

(cc linux-usb and netdev)

(it's drivers/usb/gadget/rndis.c)

On Wed, 11 Mar 2009 13:51:08 +0100 (CET) yann.poupet@xxxxxxx wrote:

> Hello,
>
> while working on a 2.6.18.2 kernel on ARM9 arch., I noticed RNDIS module might trigger lots of unaligned access exceptions.
> Looks like it comes from rndis_add_hdr() function, which uses pointer from skb_pull as if it is aligned on a 4bytes boundary.
>
> void rndis_add_hdr (struct sk_buff *skb)
> {
> struct rndis_packet_msg_type *header;
>
> if (!skb)
> return;
> header = (void *) skb_push (skb, sizeof *header);
> memset (header, 0, sizeof *header);
> header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
> header->MessageLength = cpu_to_le32(skb->len);
> header->DataOffset = __constant_cpu_to_le32 (36);
> header->DataLength = cpu_to_le32(skb->len - sizeof *header);
> }
>
>
> It happened to me that skb_pull() returns a pointer to a location not aligned on a 4 bytes boundary.
>
> As a quick workaround, I modified the code to:
>
> void rndis_add_hdr (struct sk_buff *skb)
> {
> struct rndis_packet_msg_type *header;
> static struct rndis_packet_msg_type new = {
> __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG), /* MessageType */
> 0, /* MessageLength */
> __constant_cpu_to_le32 (36), /* DataOffset */
> 0, /* DataLength */
> 0, /* OOBDataOffset */
> 0, /* OOBDataLength */
> 0, /* NumOOBDataElements */
> 0, /* PerPacketInfoOffset */
> 0, /* PerPacketInfoLength */
> 0, /* VcHandle */
> 0, /* Reserved */
> };
>
> if (!skb)
> return;
> header = (void *) skb_push (skb, sizeof *header);
> memset (header, 0, sizeof *header); /* probably not necessary */
> new.MessageLength = cpu_to_le32(skb->len);
> new.DataLength = cpu_to_le32(skb->len - sizeof *header);
> memcpy((u8*)header,(u8*)&new,sizeof(new));
> }
>
>
> and did not have the unaligned exceptions anymore.
>
> I had a look at rndis.c in latest kernel version (2.6.28.7), the rndis_add_hdr() function is the same as for 2.6.18.2.
>
>

Maybe the below fixed this? afacit it is queued for 2.6.30 in the
net-next tree:

commit 35c26c2cf6a6a2d1c48add732d8ba002bd90784c
Author: Harvey Harrison <harvey.harrison@xxxxxxxxx>
AuthorDate: Sat Feb 14 22:56:56 2009 -0800
Commit: David S. Miller <davem@xxxxxxxxxxxxx>
CommitDate: Sat Feb 14 22:56:56 2009 -0800

rndis: remove private wrapper of __constant_cpu_to_le32

Use cpu_to_le32 directly as it handles constant folding now, replace direct
uses of __constant_cpu_to_{endian} as well.

Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>

diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index bcd858c..b7f763e 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -169,7 +169,7 @@ int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen)
struct rndis_keepalive_c *msg = (void *)buf;

msg->msg_type = RNDIS_MSG_KEEPALIVE_C;
- msg->msg_len = ccpu2(sizeof *msg);
+ msg->msg_len = cpu_to_le32(sizeof *msg);
msg->status = RNDIS_STATUS_SUCCESS;
retval = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
@@ -237,7 +237,7 @@ static int rndis_query(struct usbnet *dev, struct usb_interface *intf,
u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len);
u.get->oid = oid;
u.get->len = cpu_to_le32(in_len);
- u.get->offset = ccpu2(20);
+ u.get->offset = cpu_to_le32(20);

retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
if (unlikely(retval < 0)) {
@@ -297,9 +297,9 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
goto fail;

u.init->msg_type = RNDIS_MSG_INIT;
- u.init->msg_len = ccpu2(sizeof *u.init);
- u.init->major_version = ccpu2(1);
- u.init->minor_version = ccpu2(0);
+ u.init->msg_len = cpu_to_le32(sizeof *u.init);
+ u.init->major_version = cpu_to_le32(1);
+ u.init->minor_version = cpu_to_le32(0);

/* max transfer (in spec) is 0x4000 at full speed, but for
* TX we'll stick to one Ethernet packet plus RNDIS framing.
@@ -403,10 +403,10 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
u.set->msg_type = RNDIS_MSG_SET;
- u.set->msg_len = ccpu2(4 + sizeof *u.set);
+ u.set->msg_len = cpu_to_le32(4 + sizeof *u.set);
u.set->oid = OID_GEN_CURRENT_PACKET_FILTER;
- u.set->len = ccpu2(4);
- u.set->offset = ccpu2((sizeof *u.set) - 8);
+ u.set->len = cpu_to_le32(4);
+ u.set->offset = cpu_to_le32((sizeof *u.set) - 8);
*(__le32 *)(u.buf + sizeof *u.set) = RNDIS_DEFAULT_FILTER;

retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
@@ -423,7 +423,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
halt_fail_and_release:
memset(u.halt, 0, sizeof *u.halt);
u.halt->msg_type = RNDIS_MSG_HALT;
- u.halt->msg_len = ccpu2(sizeof *u.halt);
+ u.halt->msg_len = cpu_to_le32(sizeof *u.halt);
(void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE);
fail_and_release:
usb_set_intfdata(info->data, NULL);
@@ -448,7 +448,7 @@ void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)
halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
if (halt) {
halt->msg_type = RNDIS_MSG_HALT;
- halt->msg_len = ccpu2(sizeof *halt);
+ halt->msg_len = cpu_to_le32(sizeof *halt);
(void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE);
kfree(halt);
}
@@ -543,7 +543,7 @@ fill:
memset(hdr, 0, sizeof *hdr);
hdr->msg_type = RNDIS_MSG_PACKET;
hdr->msg_len = cpu_to_le32(skb->len);
- hdr->data_offset = ccpu2(sizeof(*hdr) - 8);
+ hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8);
hdr->data_len = cpu_to_le32(len);

/* FIXME make the last packet always be short ... */
@@ -562,9 +562,6 @@ static const struct driver_info rndis_info = {
.tx_fixup = rndis_tx_fixup,
};

-#undef ccpu2
-
-
/*-------------------------------------------------------------------------*/

static const struct usb_device_id products [] = {
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 105f214..82af21e 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -90,44 +90,44 @@ MODULE_PARM_DESC(workaround_interval,


/* various RNDIS OID defs */
-#define OID_GEN_LINK_SPEED ccpu2(0x00010107)
-#define OID_GEN_RNDIS_CONFIG_PARAMETER ccpu2(0x0001021b)
-
-#define OID_GEN_XMIT_OK ccpu2(0x00020101)
-#define OID_GEN_RCV_OK ccpu2(0x00020102)
-#define OID_GEN_XMIT_ERROR ccpu2(0x00020103)
-#define OID_GEN_RCV_ERROR ccpu2(0x00020104)
-#define OID_GEN_RCV_NO_BUFFER ccpu2(0x00020105)
-
-#define OID_802_3_PERMANENT_ADDRESS ccpu2(0x01010101)
-#define OID_802_3_CURRENT_ADDRESS ccpu2(0x01010102)
-#define OID_802_3_MULTICAST_LIST ccpu2(0x01010103)
-#define OID_802_3_MAXIMUM_LIST_SIZE ccpu2(0x01010104)
-
-#define OID_802_11_BSSID ccpu2(0x0d010101)
-#define OID_802_11_SSID ccpu2(0x0d010102)
-#define OID_802_11_INFRASTRUCTURE_MODE ccpu2(0x0d010108)
-#define OID_802_11_ADD_WEP ccpu2(0x0d010113)
-#define OID_802_11_REMOVE_WEP ccpu2(0x0d010114)
-#define OID_802_11_DISASSOCIATE ccpu2(0x0d010115)
-#define OID_802_11_AUTHENTICATION_MODE ccpu2(0x0d010118)
-#define OID_802_11_PRIVACY_FILTER ccpu2(0x0d010119)
-#define OID_802_11_BSSID_LIST_SCAN ccpu2(0x0d01011a)
-#define OID_802_11_ENCRYPTION_STATUS ccpu2(0x0d01011b)
-#define OID_802_11_ADD_KEY ccpu2(0x0d01011d)
-#define OID_802_11_REMOVE_KEY ccpu2(0x0d01011e)
-#define OID_802_11_ASSOCIATION_INFORMATION ccpu2(0x0d01011f)
-#define OID_802_11_PMKID ccpu2(0x0d010123)
-#define OID_802_11_NETWORK_TYPES_SUPPORTED ccpu2(0x0d010203)
-#define OID_802_11_NETWORK_TYPE_IN_USE ccpu2(0x0d010204)
-#define OID_802_11_TX_POWER_LEVEL ccpu2(0x0d010205)
-#define OID_802_11_RSSI ccpu2(0x0d010206)
-#define OID_802_11_RSSI_TRIGGER ccpu2(0x0d010207)
-#define OID_802_11_FRAGMENTATION_THRESHOLD ccpu2(0x0d010209)
-#define OID_802_11_RTS_THRESHOLD ccpu2(0x0d01020a)
-#define OID_802_11_SUPPORTED_RATES ccpu2(0x0d01020e)
-#define OID_802_11_CONFIGURATION ccpu2(0x0d010211)
-#define OID_802_11_BSSID_LIST ccpu2(0x0d010217)
+#define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
+#define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
+
+#define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
+#define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
+#define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
+#define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
+#define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
+
+#define OID_802_3_PERMANENT_ADDRESS cpu_to_le32(0x01010101)
+#define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
+#define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
+#define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
+
+#define OID_802_11_BSSID cpu_to_le32(0x0d010101)
+#define OID_802_11_SSID cpu_to_le32(0x0d010102)
+#define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
+#define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
+#define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
+#define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
+#define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
+#define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
+#define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
+#define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
+#define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
+#define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
+#define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
+#define OID_802_11_PMKID cpu_to_le32(0x0d010123)
+#define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
+#define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
+#define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
+#define OID_802_11_RSSI cpu_to_le32(0x0d010206)
+#define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
+#define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
+#define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
+#define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
+#define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
+#define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)


/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
@@ -144,8 +144,8 @@ MODULE_PARM_DESC(workaround_interval,


/* codes for "status" field of completion messages */
-#define RNDIS_STATUS_ADAPTER_NOT_READY ccpu2(0xc0010011)
-#define RNDIS_STATUS_ADAPTER_NOT_OPEN ccpu2(0xc0010012)
+#define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
+#define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)


/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
@@ -442,7 +442,7 @@ static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)

memset(u.get, 0, sizeof *u.get);
u.get->msg_type = RNDIS_MSG_QUERY;
- u.get->msg_len = ccpu2(sizeof *u.get);
+ u.get->msg_len = cpu_to_le32(sizeof *u.get);
u.get->oid = oid;

ret = rndis_command(dev, u.header, buflen);
@@ -491,8 +491,8 @@ static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
u.set->oid = oid;
u.set->len = cpu_to_le32(len);
- u.set->offset = ccpu2(sizeof(*u.set) - 8);
- u.set->handle = ccpu2(0);
+ u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
+ u.set->handle = cpu_to_le32(0);
memcpy(u.buf + sizeof(*u.set), data, len);

ret = rndis_command(dev, u.header, buflen);
@@ -1630,7 +1630,7 @@ static int rndis_iw_set_scan(struct net_device *dev,
devdbg(usbdev, "SIOCSIWSCAN");

if (wrqu->data.flags == 0) {
- tmp = ccpu2(1);
+ tmp = cpu_to_le32(1);
ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
sizeof(tmp));
evt.data.flags = 0;
@@ -2428,7 +2428,7 @@ static void rndis_update_wireless_stats(struct work_struct *work)
/* Send scan OID. Use of both OIDs is required to get device
* working.
*/
- tmp = ccpu2(1);
+ tmp = cpu_to_le32(1);
rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
sizeof(tmp));

diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 8c26f5e..d2860a8 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -63,7 +63,7 @@ MODULE_PARM_DESC (rndis_debug, "enable debugging");
static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];

/* Driver Version */
-static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
+static const __le32 rndis_driver_version = cpu_to_le32 (1);

/* Function Prototypes */
static rndis_resp_t *rndis_add_response (int configNr, u32 length);
@@ -190,7 +190,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,

/* response goes here, right after the header */
outbuf = (__le32 *) &resp[1];
- resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
+ resp->InformationBufferOffset = cpu_to_le32 (16);

net = rndis_per_dev_params[configNr].dev;
if (net->get_stats)
@@ -221,7 +221,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
* reddite ergo quae sunt Caesaris Caesari
* et quae sunt Dei Deo!
*/
- *outbuf = __constant_cpu_to_le32 (0);
+ *outbuf = cpu_to_le32 (0);
retval = 0;
break;

@@ -256,7 +256,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
pr_debug("%s: OID_GEN_LINK_SPEED\n", __func__);
if (rndis_per_dev_params [configNr].media_state
== NDIS_MEDIA_STATE_DISCONNECTED)
- *outbuf = __constant_cpu_to_le32 (0);
+ *outbuf = cpu_to_le32 (0);
else
*outbuf = cpu_to_le32 (
rndis_per_dev_params [configNr].speed);
@@ -317,7 +317,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
/* mandatory */
case OID_GEN_MAXIMUM_TOTAL_SIZE:
pr_debug("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
- *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
+ *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
retval = 0;
break;

@@ -332,7 +332,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,

case OID_GEN_PHYSICAL_MEDIUM:
pr_debug("%s: OID_GEN_PHYSICAL_MEDIUM\n", __func__);
- *outbuf = __constant_cpu_to_le32 (0);
+ *outbuf = cpu_to_le32 (0);
retval = 0;
break;

@@ -342,7 +342,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
*/
case OID_GEN_MAC_OPTIONS: /* from WinME */
pr_debug("%s: OID_GEN_MAC_OPTIONS\n", __func__);
- *outbuf = __constant_cpu_to_le32(
+ *outbuf = cpu_to_le32(
NDIS_MAC_OPTION_RECEIVE_SERIALIZED
| NDIS_MAC_OPTION_FULL_DUPLEX);
retval = 0;
@@ -431,7 +431,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
case OID_802_3_MULTICAST_LIST:
pr_debug("%s: OID_802_3_MULTICAST_LIST\n", __func__);
/* Multicast base address only */
- *outbuf = __constant_cpu_to_le32 (0xE0000000);
+ *outbuf = cpu_to_le32 (0xE0000000);
retval = 0;
break;

@@ -439,7 +439,7 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
case OID_802_3_MAXIMUM_LIST_SIZE:
pr_debug("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __func__);
/* Multicast base address only */
- *outbuf = __constant_cpu_to_le32 (1);
+ *outbuf = cpu_to_le32 (1);
retval = 0;
break;

@@ -461,14 +461,14 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
/* mandatory */
case OID_802_3_XMIT_ONE_COLLISION:
pr_debug("%s: OID_802_3_XMIT_ONE_COLLISION\n", __func__);
- *outbuf = __constant_cpu_to_le32 (0);
+ *outbuf = cpu_to_le32 (0);
retval = 0;
break;

/* mandatory */
case OID_802_3_XMIT_MORE_COLLISIONS:
pr_debug("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __func__);
- *outbuf = __constant_cpu_to_le32 (0);
+ *outbuf = cpu_to_le32 (0);
retval = 0;
break;

@@ -572,24 +572,24 @@ static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
return -ENOMEM;
resp = (rndis_init_cmplt_type *) r->buf;

- resp->MessageType = __constant_cpu_to_le32 (
+ resp->MessageType = cpu_to_le32 (
REMOTE_NDIS_INITIALIZE_CMPLT);
- resp->MessageLength = __constant_cpu_to_le32 (52);
+ resp->MessageLength = cpu_to_le32 (52);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
- resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
- resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
- resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
- resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
- resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_SUCCESS);
+ resp->MajorVersion = cpu_to_le32 (RNDIS_MAJOR_VERSION);
+ resp->MinorVersion = cpu_to_le32 (RNDIS_MINOR_VERSION);
+ resp->DeviceFlags = cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
+ resp->Medium = cpu_to_le32 (RNDIS_MEDIUM_802_3);
+ resp->MaxPacketsPerTransfer = cpu_to_le32 (1);
resp->MaxTransferSize = cpu_to_le32 (
params->dev->mtu
+ sizeof (struct ethhdr)
+ sizeof (struct rndis_packet_msg_type)
+ 22);
- resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
- resp->AFListOffset = __constant_cpu_to_le32 (0);
- resp->AFListSize = __constant_cpu_to_le32 (0);
+ resp->PacketAlignmentFactor = cpu_to_le32 (0);
+ resp->AFListOffset = cpu_to_le32 (0);
+ resp->AFListSize = cpu_to_le32 (0);

params->resp_avail(params->v);
return 0;
@@ -617,7 +617,7 @@ static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
return -ENOMEM;
resp = (rndis_query_cmplt_type *) r->buf;

- resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
+ resp->MessageType = cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */

if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
@@ -626,13 +626,13 @@ static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
le32_to_cpu(buf->InformationBufferLength),
r)) {
/* OID not supported */
- resp->Status = __constant_cpu_to_le32 (
+ resp->Status = cpu_to_le32 (
RNDIS_STATUS_NOT_SUPPORTED);
- resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
- resp->InformationBufferLength = __constant_cpu_to_le32 (0);
- resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
+ resp->MessageLength = cpu_to_le32 (sizeof *resp);
+ resp->InformationBufferLength = cpu_to_le32 (0);
+ resp->InformationBufferOffset = cpu_to_le32 (0);
} else
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_SUCCESS);

params->resp_avail(params->v);
return 0;
@@ -665,14 +665,14 @@ static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
pr_debug("\n");
#endif

- resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
- resp->MessageLength = __constant_cpu_to_le32 (16);
+ resp->MessageType = cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
+ resp->MessageLength = cpu_to_le32 (16);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
((u8 *) buf) + 8 + BufOffset, BufLength, r))
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
else
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_SUCCESS);

params->resp_avail(params->v);
return 0;
@@ -689,11 +689,11 @@ static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
return -ENOMEM;
resp = (rndis_reset_cmplt_type *) r->buf;

- resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
- resp->MessageLength = __constant_cpu_to_le32 (16);
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
+ resp->MessageType = cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
+ resp->MessageLength = cpu_to_le32 (16);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_SUCCESS);
/* resent information */
- resp->AddressingReset = __constant_cpu_to_le32 (1);
+ resp->AddressingReset = cpu_to_le32 (1);

params->resp_avail(params->v);
return 0;
@@ -713,11 +713,11 @@ static int rndis_keepalive_response (int configNr,
return -ENOMEM;
resp = (rndis_keepalive_cmplt_type *) r->buf;

- resp->MessageType = __constant_cpu_to_le32 (
+ resp->MessageType = cpu_to_le32 (
REMOTE_NDIS_KEEPALIVE_CMPLT);
- resp->MessageLength = __constant_cpu_to_le32 (16);
+ resp->MessageLength = cpu_to_le32 (16);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
- resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
+ resp->Status = cpu_to_le32 (RNDIS_STATUS_SUCCESS);

params->resp_avail(params->v);
return 0;
@@ -742,12 +742,12 @@ static int rndis_indicate_status_msg (int configNr, u32 status)
return -ENOMEM;
resp = (rndis_indicate_status_msg_type *) r->buf;

- resp->MessageType = __constant_cpu_to_le32 (
+ resp->MessageType = cpu_to_le32 (
REMOTE_NDIS_INDICATE_STATUS_MSG);
- resp->MessageLength = __constant_cpu_to_le32 (20);
+ resp->MessageLength = cpu_to_le32 (20);
resp->Status = cpu_to_le32 (status);
- resp->StatusBufferLength = __constant_cpu_to_le32 (0);
- resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
+ resp->StatusBufferLength = cpu_to_le32 (0);
+ resp->StatusBufferOffset = cpu_to_le32 (0);

params->resp_avail(params->v);
return 0;
@@ -963,9 +963,9 @@ void rndis_add_hdr (struct sk_buff *skb)
return;
header = (void *) skb_push (skb, sizeof *header);
memset (header, 0, sizeof *header);
- header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
+ header->MessageType = cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
header->MessageLength = cpu_to_le32(skb->len);
- header->DataOffset = __constant_cpu_to_le32 (36);
+ header->DataOffset = cpu_to_le32 (36);
header->DataLength = cpu_to_le32(skb->len - sizeof *header);
}

@@ -1029,7 +1029,7 @@ int rndis_rm_hdr(struct sk_buff *skb)
__le32 *tmp = (void *) skb->data;

/* MessageType, MessageLength */
- if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
+ if (cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
!= get_unaligned(tmp++))
return -EINVAL;
tmp++;
diff --git a/include/linux/usb/rndis_host.h b/include/linux/usb/rndis_host.h
index 0a6e6d4..37836b9 100644
--- a/include/linux/usb/rndis_host.h
+++ b/include/linux/usb/rndis_host.h
@@ -49,48 +49,45 @@ struct rndis_msg_hdr {
*/
#define RNDIS_CONTROL_TIMEOUT_MS (5 * 1000)

-
-#define ccpu2 __constant_cpu_to_le32
-
-#define RNDIS_MSG_COMPLETION ccpu2(0x80000000)
+#define RNDIS_MSG_COMPLETION cpu_to_le32(0x80000000)

/* codes for "msg_type" field of rndis messages;
* only the data channel uses packet messages (maybe batched);
* everything else goes on the control channel.
*/
-#define RNDIS_MSG_PACKET ccpu2(0x00000001) /* 1-N packets */
-#define RNDIS_MSG_INIT ccpu2(0x00000002)
+#define RNDIS_MSG_PACKET cpu_to_le32(0x00000001) /* 1-N packets */
+#define RNDIS_MSG_INIT cpu_to_le32(0x00000002)
#define RNDIS_MSG_INIT_C (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_HALT ccpu2(0x00000003)
-#define RNDIS_MSG_QUERY ccpu2(0x00000004)
+#define RNDIS_MSG_HALT cpu_to_le32(0x00000003)
+#define RNDIS_MSG_QUERY cpu_to_le32(0x00000004)
#define RNDIS_MSG_QUERY_C (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_SET ccpu2(0x00000005)
+#define RNDIS_MSG_SET cpu_to_le32(0x00000005)
#define RNDIS_MSG_SET_C (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_RESET ccpu2(0x00000006)
+#define RNDIS_MSG_RESET cpu_to_le32(0x00000006)
#define RNDIS_MSG_RESET_C (RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_INDICATE ccpu2(0x00000007)
-#define RNDIS_MSG_KEEPALIVE ccpu2(0x00000008)
+#define RNDIS_MSG_INDICATE cpu_to_le32(0x00000007)
+#define RNDIS_MSG_KEEPALIVE cpu_to_le32(0x00000008)
#define RNDIS_MSG_KEEPALIVE_C (RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION)

/* codes for "status" field of completion messages */
-#define RNDIS_STATUS_SUCCESS ccpu2(0x00000000)
-#define RNDIS_STATUS_FAILURE ccpu2(0xc0000001)
-#define RNDIS_STATUS_INVALID_DATA ccpu2(0xc0010015)
-#define RNDIS_STATUS_NOT_SUPPORTED ccpu2(0xc00000bb)
-#define RNDIS_STATUS_MEDIA_CONNECT ccpu2(0x4001000b)
-#define RNDIS_STATUS_MEDIA_DISCONNECT ccpu2(0x4001000c)
+#define RNDIS_STATUS_SUCCESS cpu_to_le32(0x00000000)
+#define RNDIS_STATUS_FAILURE cpu_to_le32(0xc0000001)
+#define RNDIS_STATUS_INVALID_DATA cpu_to_le32(0xc0010015)
+#define RNDIS_STATUS_NOT_SUPPORTED cpu_to_le32(0xc00000bb)
+#define RNDIS_STATUS_MEDIA_CONNECT cpu_to_le32(0x4001000b)
+#define RNDIS_STATUS_MEDIA_DISCONNECT cpu_to_le32(0x4001000c)

/* codes for OID_GEN_PHYSICAL_MEDIUM */
-#define RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED ccpu2(0x00000000)
-#define RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN ccpu2(0x00000001)
-#define RNDIS_PHYSICAL_MEDIUM_CABLE_MODEM ccpu2(0x00000002)
-#define RNDIS_PHYSICAL_MEDIUM_PHONE_LINE ccpu2(0x00000003)
-#define RNDIS_PHYSICAL_MEDIUM_POWER_LINE ccpu2(0x00000004)
-#define RNDIS_PHYSICAL_MEDIUM_DSL ccpu2(0x00000005)
-#define RNDIS_PHYSICAL_MEDIUM_FIBRE_CHANNEL ccpu2(0x00000006)
-#define RNDIS_PHYSICAL_MEDIUM_1394 ccpu2(0x00000007)
-#define RNDIS_PHYSICAL_MEDIUM_WIRELESS_WAN ccpu2(0x00000008)
-#define RNDIS_PHYSICAL_MEDIUM_MAX ccpu2(0x00000009)
+#define RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED cpu_to_le32(0x00000000)
+#define RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN cpu_to_le32(0x00000001)
+#define RNDIS_PHYSICAL_MEDIUM_CABLE_MODEM cpu_to_le32(0x00000002)
+#define RNDIS_PHYSICAL_MEDIUM_PHONE_LINE cpu_to_le32(0x00000003)
+#define RNDIS_PHYSICAL_MEDIUM_POWER_LINE cpu_to_le32(0x00000004)
+#define RNDIS_PHYSICAL_MEDIUM_DSL cpu_to_le32(0x00000005)
+#define RNDIS_PHYSICAL_MEDIUM_FIBRE_CHANNEL cpu_to_le32(0x00000006)
+#define RNDIS_PHYSICAL_MEDIUM_1394 cpu_to_le32(0x00000007)
+#define RNDIS_PHYSICAL_MEDIUM_WIRELESS_WAN cpu_to_le32(0x00000008)
+#define RNDIS_PHYSICAL_MEDIUM_MAX cpu_to_le32(0x00000009)

struct rndis_data_hdr {
__le32 msg_type; /* RNDIS_MSG_PACKET */
@@ -228,24 +225,24 @@ struct rndis_keepalive_c { /* IN (optionally OUT) */
* there are gobs more that may optionally be supported. We'll avoid as much
* of that mess as possible.
*/
-#define OID_802_3_PERMANENT_ADDRESS ccpu2(0x01010101)
-#define OID_GEN_MAXIMUM_FRAME_SIZE ccpu2(0x00010106)
-#define OID_GEN_CURRENT_PACKET_FILTER ccpu2(0x0001010e)
-#define OID_GEN_PHYSICAL_MEDIUM ccpu2(0x00010202)
+#define OID_802_3_PERMANENT_ADDRESS cpu_to_le32(0x01010101)
+#define OID_GEN_MAXIMUM_FRAME_SIZE cpu_to_le32(0x00010106)
+#define OID_GEN_CURRENT_PACKET_FILTER cpu_to_le32(0x0001010e)
+#define OID_GEN_PHYSICAL_MEDIUM cpu_to_le32(0x00010202)

/* packet filter bits used by OID_GEN_CURRENT_PACKET_FILTER */
-#define RNDIS_PACKET_TYPE_DIRECTED ccpu2(0x00000001)
-#define RNDIS_PACKET_TYPE_MULTICAST ccpu2(0x00000002)
-#define RNDIS_PACKET_TYPE_ALL_MULTICAST ccpu2(0x00000004)
-#define RNDIS_PACKET_TYPE_BROADCAST ccpu2(0x00000008)
-#define RNDIS_PACKET_TYPE_SOURCE_ROUTING ccpu2(0x00000010)
-#define RNDIS_PACKET_TYPE_PROMISCUOUS ccpu2(0x00000020)
-#define RNDIS_PACKET_TYPE_SMT ccpu2(0x00000040)
-#define RNDIS_PACKET_TYPE_ALL_LOCAL ccpu2(0x00000080)
-#define RNDIS_PACKET_TYPE_GROUP ccpu2(0x00001000)
-#define RNDIS_PACKET_TYPE_ALL_FUNCTIONAL ccpu2(0x00002000)
-#define RNDIS_PACKET_TYPE_FUNCTIONAL ccpu2(0x00004000)
-#define RNDIS_PACKET_TYPE_MAC_FRAME ccpu2(0x00008000)
+#define RNDIS_PACKET_TYPE_DIRECTED cpu_to_le32(0x00000001)
+#define RNDIS_PACKET_TYPE_MULTICAST cpu_to_le32(0x00000002)
+#define RNDIS_PACKET_TYPE_ALL_MULTICAST cpu_to_le32(0x00000004)
+#define RNDIS_PACKET_TYPE_BROADCAST cpu_to_le32(0x00000008)
+#define RNDIS_PACKET_TYPE_SOURCE_ROUTING cpu_to_le32(0x00000010)
+#define RNDIS_PACKET_TYPE_PROMISCUOUS cpu_to_le32(0x00000020)
+#define RNDIS_PACKET_TYPE_SMT cpu_to_le32(0x00000040)
+#define RNDIS_PACKET_TYPE_ALL_LOCAL cpu_to_le32(0x00000080)
+#define RNDIS_PACKET_TYPE_GROUP cpu_to_le32(0x00001000)
+#define RNDIS_PACKET_TYPE_ALL_FUNCTIONAL cpu_to_le32(0x00002000)
+#define RNDIS_PACKET_TYPE_FUNCTIONAL cpu_to_le32(0x00004000)
+#define RNDIS_PACKET_TYPE_MAC_FRAME cpu_to_le32(0x00008000)

/* default filter used with RNDIS devices */
#define RNDIS_DEFAULT_FILTER ( \


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