Skip to content

Commit

Permalink
rndis_host: Split up rndis_host.c
Browse files Browse the repository at this point in the history 
Split up rndis_host.c into rndis_host.h and rndis_base.c. This is done so
that rndis_wlan can reuse common parts with rndis_host.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
  • Loading branch information
Jussi Kivilinna authored and David S. Miller committed Feb 1, 2008
1 parent 6e3bbcc commit 7517579
Show file tree
Hide file tree
Showing 2 changed files with 249 additions and 222 deletions.
223 changes: 1 addition & 222 deletions drivers/net/usb/rndis_host.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
#include <linux/usb/cdc.h>

#include "usbnet.h"
#include "rndis_host.h"


/*
Expand All @@ -55,228 +56,6 @@
* 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)

/* 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)

/* default filter used with RNDIS devices */
#define RNDIS_DEFAULT_FILTER ( \
RNDIS_PACKET_TYPE_DIRECTED | \
RNDIS_PACKET_TYPE_BROADCAST | \
RNDIS_PACKET_TYPE_ALL_MULTICAST | \
RNDIS_PACKET_TYPE_PROMISCUOUS)

/*
* RNDIS notifications from device: command completion; "reverse"
* keepalives; etc
Expand Down
Loading

0 comments on commit 7517579

Please sign in to comment.