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usb: gadget: rndis: use rndis_params instead of configNr 

RNDIS function has a limitation on the number of allowed instances.
So far it has been RNDIS_MAX_CONFIGS, which happens to be one.
In order to eliminate this kind of arbitrary limitation we should not
preallocate a predefined (RNDIS_MAX_CONFIGS) array of struct rndis_params
instances but instead allow allocating them on demand.

This patch prepares the elimination of the said limit by converting all the
functions which accept rndis config number to accept a pointer to the
actual struct rndis_params. Consequently, rndis_register() returns
a pointer to a corresponding struct rndis_params instance. The pointer
is then always used by f_rndis.c instead of config number when it talks
to rndis.c API.

A nice side-effect of the changes is that many lines of code in rndis.c
become shorter and fit in 80 columns.

If a function prototype changes in rndis.h a style cleanup is made
at the same time, otherwise checkpatch complains that the patch
has style problems.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2015-03-20 08:18:47 +01:00 коммит произвёл Felipe Balbi
Родитель d74c23d36e
Коммит 83210e59ee
3 изменённых файлов: 128 добавлений и 150 удалений
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38
drivers/usb/gadget/function/f_rndis.c
Просмотреть файл

@ -76,7 +76,7 @@ struct f_rndis {
u8 ethaddr[ETH_ALEN];
u32 vendorID;
const char *manufacturer;
int config;
struct rndis_params *params;
struct usb_ep *notify;
struct usb_request *notify_req;
@ -453,7 +453,7 @@ static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req)
/* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */
// spin_lock(&dev->lock);
status = rndis_msg_parser(rndis->config, (u8 *) req->buf);
status = rndis_msg_parser(rndis->params, (u8 *) req->buf);
if (status < 0)
pr_err("RNDIS command error %d, %d/%d\n",
status, req->actual, req->length);
@ -499,12 +499,12 @@ rndis_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
u32 n;
/* return the result */
buf = rndis_get_next_response(rndis->config, &n);
buf = rndis_get_next_response(rndis->params, &n);
if (buf) {
memcpy(req->buf, buf, n);
req->complete = rndis_response_complete;
req->context = rndis;
rndis_free_response(rndis->config, buf);
rndis_free_response(rndis->params, buf);
value = n;
}
/* else stalls ... spec says to avoid that */
@ -597,7 +597,7 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (IS_ERR(net))
return PTR_ERR(net);
rndis_set_param_dev(rndis->config, net,
rndis_set_param_dev(rndis->params, net,
&rndis->port.cdc_filter);
} else
goto fail;
@ -617,7 +617,7 @@ static void rndis_disable(struct usb_function *f)
DBG(cdev, "rndis deactivated\n");
rndis_uninit(rndis->config);
rndis_uninit(rndis->params);
gether_disconnect(&rndis->port);
usb_ep_disable(rndis->notify);
@ -640,9 +640,9 @@ static void rndis_open(struct gether *geth)
DBG(cdev, "%s\n", __func__);
rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3,
rndis_set_param_medium(rndis->params, RNDIS_MEDIUM_802_3,
bitrate(cdev->gadget) / 100);
rndis_signal_connect(rndis->config);
rndis_signal_connect(rndis->params);
}
static void rndis_close(struct gether *geth)
@ -651,8 +651,8 @@ static void rndis_close(struct gether *geth)
DBG(geth->func.config->cdev, "%s\n", __func__);
rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0);
rndis_signal_disconnect(rndis->config);
rndis_set_param_medium(rndis->params, RNDIS_MEDIUM_802_3, 0);
rndis_signal_disconnect(rndis->params);
}
/*-------------------------------------------------------------------------*/
@ -796,11 +796,11 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
rndis->port.open = rndis_open;
rndis->port.close = rndis_close;
rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0);
rndis_set_host_mac(rndis->config, rndis->ethaddr);
rndis_set_param_medium(rndis->params, RNDIS_MEDIUM_802_3, 0);
rndis_set_host_mac(rndis->params, rndis->ethaddr);
if (rndis->manufacturer && rndis->vendorID &&
rndis_set_param_vendor(rndis->config, rndis->vendorID,
rndis_set_param_vendor(rndis->params, rndis->vendorID,
rndis->manufacturer)) {
status = -EINVAL;
goto fail_free_descs;
@ -944,7 +944,7 @@ static void rndis_free(struct usb_function *f)
struct f_rndis_opts *opts;
rndis = func_to_rndis(f);
rndis_deregister(rndis->config);
rndis_deregister(rndis->params);
opts = container_of(f->fi, struct f_rndis_opts, func_inst);
kfree(rndis);
mutex_lock(&opts->lock);
@ -968,7 +968,7 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi)
{
struct f_rndis *rndis;
struct f_rndis_opts *opts;
int status;
struct rndis_params *params;
/* allocate and initialize one new instance */
rndis = kzalloc(sizeof(*rndis), GFP_KERNEL);
@ -1002,12 +1002,12 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi)
rndis->port.func.disable = rndis_disable;
rndis->port.func.free_func = rndis_free;
status = rndis_register(rndis_response_available, rndis);
if (status < 0) {
params = rndis_register(rndis_response_available, rndis);
if (IS_ERR(params)) {
kfree(rndis);
return ERR_PTR(status);
return ERR_CAST(params);
}
rndis->config = status;
rndis->params = params;
return &rndis->port.func;
}

213
drivers/usb/gadget/function/rndis.c
Просмотреть файл

@ -66,7 +66,8 @@ static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
static const __le32 rndis_driver_version = cpu_to_le32(1);
/* Function Prototypes */
static rndis_resp_t *rndis_add_response(int configNr, u32 length);
static rndis_resp_t *rndis_add_response(struct rndis_params *params,
u32 length);
/* supported OIDs */
@ -160,7 +161,7 @@ static const u32 oid_supported_list[] =
/* NDIS Functions */
static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
static int gen_ndis_query_resp(struct rndis_params *params, u32 OID, u8 *buf,
unsigned buf_len, rndis_resp_t *r)
{
int retval = -ENOTSUPP;
@ -192,7 +193,7 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
outbuf = (__le32 *)&resp[1];
resp->InformationBufferOffset = cpu_to_le32(16);
net = rndis_per_dev_params[configNr].dev;
net = params->dev;
stats = dev_get_stats(net, &temp);
switch (OID) {
@ -225,7 +226,7 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_GEN_MEDIA_SUPPORTED:
pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__);
*outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
*outbuf = cpu_to_le32(params->medium);
retval = 0;
break;
@ -233,16 +234,15 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
case RNDIS_OID_GEN_MEDIA_IN_USE:
pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__);
/* one medium, one transport... (maybe you do it better) */
*outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
*outbuf = cpu_to_le32(params->medium);
retval = 0;
break;
/* mandatory */
case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE:
pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
if (rndis_per_dev_params[configNr].dev) {
*outbuf = cpu_to_le32(
rndis_per_dev_params[configNr].dev->mtu);
if (params->dev) {
*outbuf = cpu_to_le32(params->dev->mtu);
retval = 0;
}
break;
@ -251,21 +251,18 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
case RNDIS_OID_GEN_LINK_SPEED:
if (rndis_debug > 1)
pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__);
if (rndis_per_dev_params[configNr].media_state
== RNDIS_MEDIA_STATE_DISCONNECTED)
if (params->media_state == RNDIS_MEDIA_STATE_DISCONNECTED)
*outbuf = cpu_to_le32(0);
else
*outbuf = cpu_to_le32(
rndis_per_dev_params[configNr].speed);
*outbuf = cpu_to_le32(params->speed);
retval = 0;
break;
/* mandatory */
case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE:
pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
if (rndis_per_dev_params[configNr].dev) {
*outbuf = cpu_to_le32(
rndis_per_dev_params[configNr].dev->mtu);
if (params->dev) {
*outbuf = cpu_to_le32(params->dev->mtu);
retval = 0;
}
break;
@ -273,9 +270,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE:
pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
if (rndis_per_dev_params[configNr].dev) {
*outbuf = cpu_to_le32(
rndis_per_dev_params[configNr].dev->mtu);
if (params->dev) {
*outbuf = cpu_to_le32(params->dev->mtu);
retval = 0;
}
break;
@ -283,20 +279,16 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_GEN_VENDOR_ID:
pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__);
*outbuf = cpu_to_le32(
rndis_per_dev_params[configNr].vendorID);
*outbuf = cpu_to_le32(params->vendorID);
retval = 0;
break;
/* mandatory */
case RNDIS_OID_GEN_VENDOR_DESCRIPTION:
pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__);
if (rndis_per_dev_params[configNr].vendorDescr) {
length = strlen(rndis_per_dev_params[configNr].
vendorDescr);
memcpy(outbuf,
rndis_per_dev_params[configNr].vendorDescr,
length);
if (params->vendorDescr) {
length = strlen(params->vendorDescr);
memcpy(outbuf, params->vendorDescr, length);
} else {
outbuf[0] = 0;
}
@ -313,7 +305,7 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
*outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter);
*outbuf = cpu_to_le32(*params->filter);
retval = 0;
break;
@ -328,8 +320,7 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS:
if (rndis_debug > 1)
pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
*outbuf = cpu_to_le32(rndis_per_dev_params[configNr]
.media_state);
*outbuf = cpu_to_le32(params->media_state);
retval = 0;
break;
@ -409,11 +400,9 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_802_3_PERMANENT_ADDRESS:
pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__);
if (rndis_per_dev_params[configNr].dev) {
if (params->dev) {
length = ETH_ALEN;
memcpy(outbuf,
rndis_per_dev_params[configNr].host_mac,
length);
memcpy(outbuf, params->host_mac, length);
retval = 0;
}
break;
@ -421,11 +410,9 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
/* mandatory */
case RNDIS_OID_802_3_CURRENT_ADDRESS:
pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__);
if (rndis_per_dev_params[configNr].dev) {
if (params->dev) {
length = ETH_ALEN;
memcpy(outbuf,
rndis_per_dev_params [configNr].host_mac,
length);
memcpy(outbuf, params->host_mac, length);
retval = 0;
}
break;
@ -490,12 +477,11 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
return retval;
}
static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
rndis_resp_t *r)
static int gen_ndis_set_resp(struct rndis_params *params, u32 OID,
u8 *buf, u32 buf_len, rndis_resp_t *r)
{
rndis_set_cmplt_type *resp;
int i, retval = -ENOTSUPP;
struct rndis_params *params;
if (!r)
return -ENOMEM;
@ -514,7 +500,6 @@ static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
}
}
params = &rndis_per_dev_params[configNr];
switch (OID) {
case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
@ -563,16 +548,16 @@ static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
* Response Functions
*/
static int rndis_init_response(int configNr, rndis_init_msg_type *buf)
static int rndis_init_response(struct rndis_params *params,
rndis_init_msg_type *buf)
{
rndis_init_cmplt_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
if (!params->dev)
return -ENOTSUPP;
r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type));
r = rndis_add_response(params, sizeof(rndis_init_cmplt_type));
if (!r)
return -ENOMEM;
resp = (rndis_init_cmplt_type *)r->buf;
@ -599,11 +584,11 @@ static int rndis_init_response(int configNr, rndis_init_msg_type *buf)
return 0;
}
static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
static int rndis_query_response(struct rndis_params *params,
rndis_query_msg_type *buf)
{
rndis_query_cmplt_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
/* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */
if (!params->dev)
@ -615,7 +600,7 @@ static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
* rndis_query_cmplt_type followed by data.
* oid_supported_list is the largest data reply
*/
r = rndis_add_response(configNr,
r = rndis_add_response(params,
sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type));
if (!r)
return -ENOMEM;
@ -624,7 +609,7 @@ static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID),
if (gen_ndis_query_resp(params, le32_to_cpu(buf->OID),
le32_to_cpu(buf->InformationBufferOffset)
+ 8 + (u8 *)buf,
le32_to_cpu(buf->InformationBufferLength),
@ -641,14 +626,14 @@ static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
return 0;
}
static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
static int rndis_set_response(struct rndis_params *params,
rndis_set_msg_type *buf)
{
u32 BufLength, BufOffset;
rndis_set_cmplt_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
r = rndis_add_response(params, sizeof(rndis_set_cmplt_type));
if (!r)
return -ENOMEM;
resp = (rndis_set_cmplt_type *)r->buf;
@ -671,7 +656,7 @@ static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C);
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),
if (gen_ndis_set_resp(params, le32_to_cpu(buf->OID),
((u8 *)buf) + 8 + BufOffset, BufLength, r))
resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
else
@ -681,13 +666,13 @@ static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
return 0;
}
static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
static int rndis_reset_response(struct rndis_params *params,
rndis_reset_msg_type *buf)
{
rndis_reset_cmplt_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type));
r = rndis_add_response(params, sizeof(rndis_reset_cmplt_type));
if (!r)
return -ENOMEM;
resp = (rndis_reset_cmplt_type *)r->buf;
@ -702,16 +687,15 @@ static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
return 0;
}
static int rndis_keepalive_response(int configNr,
static int rndis_keepalive_response(struct rndis_params *params,
rndis_keepalive_msg_type *buf)
{
rndis_keepalive_cmplt_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
/* host "should" check only in RNDIS_DATA_INITIALIZED state */
r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type));
r = rndis_add_response(params, sizeof(rndis_keepalive_cmplt_type));
if (!r)
return -ENOMEM;
resp = (rndis_keepalive_cmplt_type *)r->buf;
@ -729,17 +713,15 @@ static int rndis_keepalive_response(int configNr,
/*
* Device to Host Comunication
*/
static int rndis_indicate_status_msg(int configNr, u32 status)
static int rndis_indicate_status_msg(struct rndis_params *params, u32 status)
{
rndis_indicate_status_msg_type *resp;
rndis_resp_t *r;
struct rndis_params *params = rndis_per_dev_params + configNr;
if (params->state == RNDIS_UNINITIALIZED)
return -ENOTSUPP;
r = rndis_add_response(configNr,
sizeof(rndis_indicate_status_msg_type));
r = rndis_add_response(params, sizeof(rndis_indicate_status_msg_type));
if (!r)
return -ENOMEM;
resp = (rndis_indicate_status_msg_type *)r->buf;
@ -754,53 +736,48 @@ static int rndis_indicate_status_msg(int configNr, u32 status)
return 0;
}
int rndis_signal_connect(int configNr)
int rndis_signal_connect(struct rndis_params *params)
{
rndis_per_dev_params[configNr].media_state
= RNDIS_MEDIA_STATE_CONNECTED;
return rndis_indicate_status_msg(configNr,
RNDIS_STATUS_MEDIA_CONNECT);
params->media_state = RNDIS_MEDIA_STATE_CONNECTED;
return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_CONNECT);
}
EXPORT_SYMBOL_GPL(rndis_signal_connect);
int rndis_signal_disconnect(int configNr)
int rndis_signal_disconnect(struct rndis_params *params)
{
rndis_per_dev_params[configNr].media_state
= RNDIS_MEDIA_STATE_DISCONNECTED;
return rndis_indicate_status_msg(configNr,
RNDIS_STATUS_MEDIA_DISCONNECT);
params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED;
return rndis_indicate_status_msg(params, RNDIS_STATUS_MEDIA_DISCONNECT);
}
EXPORT_SYMBOL_GPL(rndis_signal_disconnect);
void rndis_uninit(int configNr)
void rndis_uninit(struct rndis_params *params)
{
u8 *buf;
u32 length;
if (configNr >= RNDIS_MAX_CONFIGS)
if (!params)
return;
rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED;
params->state = RNDIS_UNINITIALIZED;
/* drain the response queue */
while ((buf = rndis_get_next_response(configNr, &length)))
rndis_free_response(configNr, buf);
while ((buf = rndis_get_next_response(params, &length)))
rndis_free_response(params, buf);
}
EXPORT_SYMBOL_GPL(rndis_uninit);
void rndis_set_host_mac(int configNr, const u8 *addr)
void rndis_set_host_mac(struct rndis_params *params, const u8 *addr)
{
rndis_per_dev_params[configNr].host_mac = addr;
params->host_mac = addr;
}
EXPORT_SYMBOL_GPL(rndis_set_host_mac);
/*
* Message Parser
*/
int rndis_msg_parser(u8 configNr, u8 *buf)
int rndis_msg_parser(struct rndis_params *params, u8 *buf)
{
u32 MsgType, MsgLength;
__le32 *tmp;
struct rndis_params *params;
if (!buf)
return -ENOMEM;
@ -809,9 +786,8 @@ int rndis_msg_parser(u8 configNr, u8 *buf)
MsgType = get_unaligned_le32(tmp++);
MsgLength = get_unaligned_le32(tmp++);
if (configNr >= RNDIS_MAX_CONFIGS)
if (!params)
return -ENOTSUPP;
params = &rndis_per_dev_params[configNr];
/* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
* rx/tx statistics and link status, in addition to KEEPALIVE traffic
@ -824,8 +800,7 @@ int rndis_msg_parser(u8 configNr, u8 *buf)
pr_debug("%s: RNDIS_MSG_INIT\n",
__func__);
params->state = RNDIS_INITIALIZED;
return rndis_init_response(configNr,
(rndis_init_msg_type *)buf);
return rndis_init_response(params, (rndis_init_msg_type *)buf);
case RNDIS_MSG_HALT:
pr_debug("%s: RNDIS_MSG_HALT\n",
@ -838,17 +813,16 @@ int rndis_msg_parser(u8 configNr, u8 *buf)
return 0;
case RNDIS_MSG_QUERY:
return rndis_query_response(configNr,
return rndis_query_response(params,
(rndis_query_msg_type *)buf);
case RNDIS_MSG_SET:
return rndis_set_response(configNr,
(rndis_set_msg_type *)buf);
return rndis_set_response(params, (rndis_set_msg_type *)buf);
case RNDIS_MSG_RESET:
pr_debug("%s: RNDIS_MSG_RESET\n",
__func__);
return rndis_reset_response(configNr,
return rndis_reset_response(params,
(rndis_reset_msg_type *)buf);
case RNDIS_MSG_KEEPALIVE:
@ -856,7 +830,7 @@ int rndis_msg_parser(u8 configNr, u8 *buf)
if (rndis_debug > 1)
pr_debug("%s: RNDIS_MSG_KEEPALIVE\n",
__func__);
return rndis_keepalive_response(configNr,
return rndis_keepalive_response(params,
(rndis_keepalive_msg_type *)
buf);
@ -876,12 +850,12 @@ int rndis_msg_parser(u8 configNr, u8 *buf)
}
EXPORT_SYMBOL_GPL(rndis_msg_parser);
int rndis_register(void (*resp_avail)(void *v), void *v)
struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v)
{
u8 i;
if (!resp_avail)
return -EINVAL;
return ERR_PTR(-EINVAL);
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
if (!rndis_per_dev_params[i].used) {
@ -889,58 +863,64 @@ int rndis_register(void (*resp_avail)(void *v), void *v)
rndis_per_dev_params[i].resp_avail = resp_avail;
rndis_per_dev_params[i].v = v;
pr_debug("%s: configNr = %d\n", __func__, i);
return i;
return &rndis_per_dev_params[i];
}
}
pr_debug("failed\n");
return -ENODEV;
return ERR_PTR(-ENODEV);
}
EXPORT_SYMBOL_GPL(rndis_register);
void rndis_deregister(int configNr)
void rndis_deregister(struct rndis_params *params)
{
pr_debug("%s:\n", __func__);
if (configNr >= RNDIS_MAX_CONFIGS) return;
rndis_per_dev_params[configNr].used = 0;
if (!params)
return;
params->used = 0;
}
EXPORT_SYMBOL_GPL(rndis_deregister);
int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter)
int rndis_set_param_dev(struct rndis_params *params, struct net_device *dev,
u16 *cdc_filter)
{
pr_debug("%s:\n", __func__);
if (!dev)
return -EINVAL;
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
if (!params)
return -1;
rndis_per_dev_params[configNr].dev = dev;
rndis_per_dev_params[configNr].filter = cdc_filter;
params->dev = dev;
params->filter = cdc_filter;
return 0;
}
EXPORT_SYMBOL_GPL(rndis_set_param_dev);
int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
int rndis_set_param_vendor(struct rndis_params *params, u32 vendorID,
const char *vendorDescr)
{
pr_debug("%s:\n", __func__);
if (!vendorDescr) return -1;
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
if (!params)
return -1;
rndis_per_dev_params[configNr].vendorID = vendorID;
rndis_per_dev_params[configNr].vendorDescr = vendorDescr;
params->vendorID = vendorID;
params->vendorDescr = vendorDescr;
return 0;
}
EXPORT_SYMBOL_GPL(rndis_set_param_vendor);
int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
int rndis_set_param_medium(struct rndis_params *params, u32 medium, u32 speed)
{
pr_debug("%s: %u %u\n", __func__, medium, speed);
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
if (!params)
return -1;
rndis_per_dev_params[configNr].medium = medium;
rndis_per_dev_params[configNr].speed = speed;
params->medium = medium;
params->speed = speed;
return 0;
}
@ -961,13 +941,12 @@ void rndis_add_hdr(struct sk_buff *skb)
}
EXPORT_SYMBOL_GPL(rndis_add_hdr);
void rndis_free_response(int configNr, u8 *buf)
void rndis_free_response(struct rndis_params *params, u8 *buf)
{
rndis_resp_t *r;
struct list_head *act, *tmp;
list_for_each_safe(act, tmp,
&(rndis_per_dev_params[configNr].resp_queue))
list_for_each_safe(act, tmp, &(params->resp_queue))
{
r = list_entry(act, rndis_resp_t, list);
if (r && r->buf == buf) {
@ -978,15 +957,14 @@ void rndis_free_response(int configNr, u8 *buf)
}
EXPORT_SYMBOL_GPL(rndis_free_response);
u8 *rndis_get_next_response(int configNr, u32 *length)
u8 *rndis_get_next_response(struct rndis_params *params, u32 *length)
{
rndis_resp_t *r;
struct list_head *act, *tmp;
if (!length) return NULL;
list_for_each_safe(act, tmp,
&(rndis_per_dev_params[configNr].resp_queue))
list_for_each_safe(act, tmp, &(params->resp_queue))
{
r = list_entry(act, rndis_resp_t, list);
if (!r->send) {
@ -1000,7 +978,7 @@ u8 *rndis_get_next_response(int configNr, u32 *length)
}
EXPORT_SYMBOL_GPL(rndis_get_next_response);
static rndis_resp_t *rndis_add_response(int configNr, u32 length)
static rndis_resp_t *rndis_add_response(struct rndis_params *params, u32 length)
{
rndis_resp_t *r;
@ -1012,8 +990,7 @@ static rndis_resp_t *rndis_add_response(int configNr, u32 length)
r->length = length;
r->send = 0;
list_add_tail(&r->list,
&(rndis_per_dev_params[configNr].resp_queue));
list_add_tail(&r->list, &(params->resp_queue));
return r;
}

27
drivers/usb/gadget/function/rndis.h
Просмотреть файл

@ -197,24 +197,25 @@ typedef struct rndis_params
} rndis_params;
/* RNDIS Message parser and other useless functions */
int rndis_msg_parser (u8 configNr, u8 *buf);
int rndis_register(void (*resp_avail)(void *v), void *v);
void rndis_deregister (int configNr);
int rndis_set_param_dev (u8 configNr, struct net_device *dev,
int rndis_msg_parser(struct rndis_params *params, u8 *buf);
struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v);
void rndis_deregister(struct rndis_params *params);
int rndis_set_param_dev(struct rndis_params *params, struct net_device *dev,
u16 *cdc_filter);
int rndis_set_param_vendor (u8 configNr, u32 vendorID,
int rndis_set_param_vendor(struct rndis_params *params, u32 vendorID,
const char *vendorDescr);
int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed);
int rndis_set_param_medium(struct rndis_params *params, u32 medium,
u32 speed);
void rndis_add_hdr (struct sk_buff *skb);
int rndis_rm_hdr(struct gether *port, struct sk_buff *skb,
struct sk_buff_head *list);
u8 *rndis_get_next_response (int configNr, u32 *length);
void rndis_free_response (int configNr, u8 *buf);
u8 *rndis_get_next_response(struct rndis_params *params, u32 *length);
void rndis_free_response(struct rndis_params *params, u8 *buf);
void rndis_uninit (int configNr);
int rndis_signal_connect (int configNr);
int rndis_signal_disconnect (int configNr);
int rndis_state (int configNr);
extern void rndis_set_host_mac (int configNr, const u8 *addr);
void rndis_uninit(struct rndis_params *params);
int rndis_signal_connect(struct rndis_params *params);
int rndis_signal_disconnect(struct rndis_params *params);
int rndis_state(struct rndis_params *params);
extern void rndis_set_host_mac(struct rndis_params *params, const u8 *addr);
#endif /* _LINUX_RNDIS_H */