* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-
-// #define DEBUG // error path messages, extra info
-// #define VERBOSE // more; success messages
-
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
-
-#include "usbnet.h"
+#include <linux/usb/usbnet.h>
+#include <linux/usb/rndis_host.h>
/*
* currently rare) "Ethernet Emulation Model" (EEM).
*/
-/*
- * CONTROL uses CDC "encapsulated commands" with funky notifications.
- * - control-out: SEND_ENCAPSULATED
- * - interrupt-in: RESPONSE_AVAILABLE
- * - control-in: GET_ENCAPSULATED
- *
- * We'll try to ignore the RESPONSE_AVAILABLE notifications.
- *
- * REVISIT some RNDIS implementations seem to have curious issues still
- * to be resolved.
- */
-struct rndis_msg_hdr {
- __le32 msg_type; /* RNDIS_MSG_* */
- __le32 msg_len;
- // followed by data that varies between messages
- __le32 request_id;
- __le32 status;
- // ... and more
-} __attribute__ ((packed));
-
-/* MS-Windows uses this strange size, but RNDIS spec says 1024 minimum */
-#define CONTROL_BUFFER_SIZE 1025
-
-/* RNDIS defines an (absurdly huge) 10 second control timeout,
- * but ActiveSync seems to use a more usual 5 second timeout
- * (which matches the USB 2.0 spec).
- */
-#define RNDIS_CONTROL_TIMEOUT_MS (5 * 1000)
-
-
-#define ccpu2 __constant_cpu_to_le32
-
-#define RNDIS_MSG_COMPLETION ccpu2(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_INIT_C (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_HALT ccpu2(0x00000003)
-#define RNDIS_MSG_QUERY ccpu2(0x00000004)
-#define RNDIS_MSG_QUERY_C (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_SET ccpu2(0x00000005)
-#define RNDIS_MSG_SET_C (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
-#define RNDIS_MSG_RESET ccpu2(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_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)
-
-
-struct rndis_data_hdr {
- __le32 msg_type; /* RNDIS_MSG_PACKET */
- __le32 msg_len; // rndis_data_hdr + data_len + pad
- __le32 data_offset; // 36 -- right after header
- __le32 data_len; // ... real packet size
-
- __le32 oob_data_offset; // zero
- __le32 oob_data_len; // zero
- __le32 num_oob; // zero
- __le32 packet_data_offset; // zero
-
- __le32 packet_data_len; // zero
- __le32 vc_handle; // zero
- __le32 reserved; // zero
-} __attribute__ ((packed));
-
-struct rndis_init { /* OUT */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_INIT */
- __le32 msg_len; // 24
- __le32 request_id;
- __le32 major_version; // of rndis (1.0)
- __le32 minor_version;
- __le32 max_transfer_size;
-} __attribute__ ((packed));
-
-struct rndis_init_c { /* IN */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_INIT_C */
- __le32 msg_len;
- __le32 request_id;
- __le32 status;
- __le32 major_version; // of rndis (1.0)
- __le32 minor_version;
- __le32 device_flags;
- __le32 medium; // zero == 802.3
- __le32 max_packets_per_message;
- __le32 max_transfer_size;
- __le32 packet_alignment; // max 7; (1<<n) bytes
- __le32 af_list_offset; // zero
- __le32 af_list_size; // zero
-} __attribute__ ((packed));
-
-struct rndis_halt { /* OUT (no reply) */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_HALT */
- __le32 msg_len;
- __le32 request_id;
-} __attribute__ ((packed));
-
-struct rndis_query { /* OUT */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_QUERY */
- __le32 msg_len;
- __le32 request_id;
- __le32 oid;
- __le32 len;
- __le32 offset;
-/*?*/ __le32 handle; // zero
-} __attribute__ ((packed));
-
-struct rndis_query_c { /* IN */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_QUERY_C */
- __le32 msg_len;
- __le32 request_id;
- __le32 status;
- __le32 len;
- __le32 offset;
-} __attribute__ ((packed));
-
-struct rndis_set { /* OUT */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_SET */
- __le32 msg_len;
- __le32 request_id;
- __le32 oid;
- __le32 len;
- __le32 offset;
-/*?*/ __le32 handle; // zero
-} __attribute__ ((packed));
-
-struct rndis_set_c { /* IN */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_SET_C */
- __le32 msg_len;
- __le32 request_id;
- __le32 status;
-} __attribute__ ((packed));
-
-struct rndis_reset { /* IN */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_RESET */
- __le32 msg_len;
- __le32 reserved;
-} __attribute__ ((packed));
-
-struct rndis_reset_c { /* OUT */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_RESET_C */
- __le32 msg_len;
- __le32 status;
- __le32 addressing_lost;
-} __attribute__ ((packed));
-
-struct rndis_indicate { /* IN (unrequested) */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_INDICATE */
- __le32 msg_len;
- __le32 status;
- __le32 length;
- __le32 offset;
-/**/ __le32 diag_status;
- __le32 error_offset;
-/**/ __le32 message;
-} __attribute__ ((packed));
-
-struct rndis_keepalive { /* OUT (optionally IN) */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_KEEPALIVE */
- __le32 msg_len;
- __le32 request_id;
-} __attribute__ ((packed));
-
-struct rndis_keepalive_c { /* IN (optionally OUT) */
- // header and:
- __le32 msg_type; /* RNDIS_MSG_KEEPALIVE_C */
- __le32 msg_len;
- __le32 request_id;
- __le32 status;
-} __attribute__ ((packed));
-
-/* NOTE: about 30 OIDs are "mandatory" for peripherals to support ... and
- * 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)
-
/*
* RNDIS notifications from device: command completion; "reverse"
* keepalives; etc
*/
-static void rndis_status(struct usbnet *dev, struct urb *urb)
+void rndis_status(struct usbnet *dev, struct urb *urb)
{
devdbg(dev, "rndis status urb, len %d stat %d",
urb->actual_length, urb->status);
// FIXME for keepalives, respond immediately (asynchronously)
// if not an RNDIS status, do like cdc_status(dev,urb) does
}
+EXPORT_SYMBOL_GPL(rndis_status);
/*
* RPC done RNDIS-style. Caller guarantees:
* Call context is likely probe(), before interface name is known,
* which is why we won't try to use it in the diagnostics.
*/
-static int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf)
+int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf)
{
struct cdc_state *info = (void *) &dev->data;
int master_ifnum;
request_id, xid);
/* then likely retry */
} else switch (buf->msg_type) {
- case RNDIS_MSG_INDICATE: { /* fault */
- // struct rndis_indicate *msg = (void *)buf;
- dev_info(&info->control->dev,
- "rndis fault indication\n");
+ case RNDIS_MSG_INDICATE: { /* fault/event */
+ struct rndis_indicate *msg = (void *)buf;
+ int state = 0;
+
+ switch (msg->status) {
+ case RNDIS_STATUS_MEDIA_CONNECT:
+ state = 1;
+ case RNDIS_STATUS_MEDIA_DISCONNECT:
+ dev_info(&info->control->dev,
+ "rndis media %sconnect\n",
+ !state?"dis":"");
+ if (dev->driver_info->link_change)
+ dev->driver_info->link_change(
+ dev, state);
+ break;
+ default:
+ dev_info(&info->control->dev,
+ "rndis indication: 0x%08x\n",
+ le32_to_cpu(msg->status));
+ }
}
break;
case RNDIS_MSG_KEEPALIVE: { /* ping */
dev_dbg(&info->control->dev, "rndis response timeout\n");
return -ETIMEDOUT;
}
+EXPORT_SYMBOL_GPL(rndis_command);
/*
* rndis_query:
return -EDOM;
}
-static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
+int
+generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
{
int retval;
struct net_device *net = dev->net;
struct rndis_query_c *get_c;
struct rndis_set *set;
struct rndis_set_c *set_c;
+ struct rndis_halt *halt;
} u;
- u32 tmp;
+ u32 tmp, phym_unspec, *phym;
int reply_len;
unsigned char *bp;
net->hard_header_len += sizeof (struct rndis_data_hdr);
dev->hard_mtu = net->mtu + net->hard_header_len;
+ dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
+ if (dev->maxpacket == 0) {
+ if (netif_msg_probe(dev))
+ dev_dbg(&intf->dev, "dev->maxpacket can't be 0\n");
+ retval = -EINVAL;
+ goto fail_and_release;
+ }
+
dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);
dev->rx_urb_size &= ~(dev->maxpacket - 1);
u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);
}
tmp = le32_to_cpu(u.init_c->max_transfer_size);
if (tmp < dev->hard_mtu) {
- dev_err(&intf->dev,
- "dev can't take %u byte packets (max %u)\n",
- dev->hard_mtu, tmp);
- retval = -EINVAL;
- goto fail_and_release;
+ if (tmp <= net->hard_header_len) {
+ dev_err(&intf->dev,
+ "dev can't take %u byte packets (max %u)\n",
+ dev->hard_mtu, tmp);
+ retval = -EINVAL;
+ goto halt_fail_and_release;
+ }
+ dev->hard_mtu = tmp;
+ net->mtu = dev->hard_mtu - net->hard_header_len;
+ dev_warn(&intf->dev,
+ "dev can't take %u byte packets (max %u), "
+ "adjusting MTU to %u\n",
+ dev->hard_mtu, tmp, net->mtu);
}
/* REVISIT: peripheral "alignment" request is ignored ... */
dev->hard_mtu, tmp, dev->rx_urb_size,
1 << le32_to_cpu(u.init_c->packet_alignment));
+ /* module has some device initialization code needs to be done right
+ * after RNDIS_INIT */
+ if (dev->driver_info->early_init &&
+ dev->driver_info->early_init(dev) != 0)
+ goto halt_fail_and_release;
+
+ /* Check physical medium */
+ phym = NULL;
+ reply_len = sizeof *phym;
+ retval = rndis_query(dev, intf, u.buf, OID_GEN_PHYSICAL_MEDIUM,
+ 0, (void **) &phym, &reply_len);
+ if (retval != 0 || !phym) {
+ /* OID is optional so don't fail here. */
+ phym_unspec = RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED;
+ phym = &phym_unspec;
+ }
+ if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&
+ *phym != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
+ if (netif_msg_probe(dev))
+ dev_dbg(&intf->dev, "driver requires wireless "
+ "physical medium, but device is not.\n");
+ retval = -ENODEV;
+ goto halt_fail_and_release;
+ }
+ if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) &&
+ *phym == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
+ if (netif_msg_probe(dev))
+ dev_dbg(&intf->dev, "driver requires non-wireless "
+ "physical medium, but device is wireless.\n");
+ retval = -ENODEV;
+ goto halt_fail_and_release;
+ }
+
/* Get designated host ethernet address */
reply_len = ETH_ALEN;
retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS,
48, (void **) &bp, &reply_len);
if (unlikely(retval< 0)) {
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
- goto fail_and_release;
+ goto halt_fail_and_release;
}
memcpy(net->dev_addr, bp, ETH_ALEN);
u.set->oid = OID_GEN_CURRENT_PACKET_FILTER;
u.set->len = ccpu2(4);
u.set->offset = ccpu2((sizeof *u.set) - 8);
- *(__le32 *)(u.buf + sizeof *u.set) = ccpu2(DEFAULT_FILTER);
+ *(__le32 *)(u.buf + sizeof *u.set) = RNDIS_DEFAULT_FILTER;
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
- goto fail_and_release;
+ goto halt_fail_and_release;
}
retval = 0;
kfree(u.buf);
return retval;
+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);
+ (void) rndis_command(dev, (void *)u.halt);
fail_and_release:
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
kfree(u.buf);
return retval;
}
+EXPORT_SYMBOL_GPL(generic_rndis_bind);
+
+static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS);
+}
-static void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)
+void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct rndis_halt *halt;
/* try to clear any rndis state/activity (no i/o from stack!) */
- halt = kzalloc(sizeof *halt, GFP_KERNEL);
+ halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
if (halt) {
halt->msg_type = RNDIS_MSG_HALT;
halt->msg_len = ccpu2(sizeof *halt);
kfree(halt);
}
- return usbnet_cdc_unbind(dev, intf);
+ usbnet_cdc_unbind(dev, intf);
}
+EXPORT_SYMBOL_GPL(rndis_unbind);
/*
* DATA -- host must not write zlps
*/
-static int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
/* peripheral may have batched packets to us... */
while (likely(skb->len)) {
/* caller will usbnet_skb_return the remaining packet */
return 1;
}
+EXPORT_SYMBOL_GPL(rndis_rx_fixup);
-static struct sk_buff *
+struct sk_buff *
rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
{
struct rndis_data_hdr *hdr;
/* FIXME make the last packet always be short ... */
return skb;
}
+EXPORT_SYMBOL_GPL(rndis_tx_fixup);
static const struct driver_info rndis_info = {
git.samba.org / sfrench / cifs-2.6.git / blobdiff