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#include <asm/errno.h>
#include "intf.h"
#include "trans.h"
static int process_release(struct tsnif_handle *h, struct tsnif_term *term)
{
if (!h->ops || !h->ops->cb_release)
return -1;
return h->ops->cb_release(term);
}
static int process_error(struct tsnif_handle *h, struct tsnif_term *term, int err)
{
if (!h->ops || !h->ops->cb_err)
return -1;
return h->ops->cb_err(term, err);
}
static int process_tgroup(struct tsnif_handle *h, struct tsnif_term *term,
int group)
{
int err;
err = trans_group(&h->trans, group);
term->state = err ? TSNIF_INTF_STATE_DONE : TSNIF_INTF_STATE_DATA;
TSNIF_DEBUG("adding group %d, err %d\n", group, err);
return err;
}
static int new(struct tsnif_handle *h,
struct tsnif_term *term,
struct trans_msg *msg)
{
int err = 0;
switch(msg->cmd) {
case TSNIF_CMD_TGROUP:
err = process_tgroup(h, term, msg->group);
break;
case TSNIF_CMD_RELEASE:
err = process_release(h, term);
break;
case TSNIF_CMD_ATTACH:
/* got ATTACH cmd without error ??? */
err = -EINVAL;
if (!msg->err)
break;
err = process_error(h, term, msg->error);
break;
default:
return -1;
}
return err;
}
static int process_data(struct tsnif_handle *h,
struct tsnif_term *term,
struct trans_msg *msg)
{
struct tsnif_data data;
TSNIF_DEBUG("type %d, idx %d\n",
term->type, term->idx);
if (!h->ops || !h->ops->cb_data)
return -1;
data.ptr = msg->data.ptr;
data.len = msg->data.len;
data.flags = msg->data.flags;
return h->ops->cb_data(term, &data);
}
static int data(struct tsnif_handle *h,
struct tsnif_term *term,
struct trans_msg *msg)
{
int err = 0;
switch(msg->cmd) {
case TSNIF_CMD_RELEASE:
err = process_release(h, term);
break;
case TSNIF_CMD_DATA:
err = process_data(h, term, msg);
break;
default:
return -1;
}
return err;
}
int fsm_process(struct tsnif_handle *h,
struct tsnif_term *term,
struct trans_msg *msg)
{
TSNIF_DEBUG("got cmd %d for term type %d, idx %d, state %d\n",
msg->cmd, term->type, term->idx, term->state);
switch(term->state) {
case TSNIF_INTF_STATE_NEW:
return new(h, term, msg);
case TSNIF_INTF_STATE_DATA:
return data(h, term, msg);
default:
return -1;
}
return 0;
}
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