static ssize_t
stp_policy_node_masters_store(struct config_item *item, const char *page,
size_t count)
{
struct stp_policy_node *policy_node = to_stp_policy_node(item);
unsigned int first, last;
struct stm_device *stm;
char *p = (char *)page;
ssize_t ret = -ENODEV;
if (sscanf(p, "%u %u", &first, &last) != 2)
return -EINVAL;
mutex_lock(&stp_policy_subsys.su_mutex);
stm = policy_node->policy->stm;
if (!stm)
goto unlock;
/* must be within [sw_start..sw_end], which is an inclusive range */
if (first > last || first < stm->data->sw_start ||
last > stm->data->sw_end) {
ret = -ERANGE;
goto unlock;
}
ret = count;
policy_node->first_master = first;
policy_node->last_master = last;
unlock:
mutex_unlock(&stp_policy_subsys.su_mutex);
return ret;
}
static ssize_t
stp_policy_node_channels_store(struct config_item *item, const char *page,
size_t count)
{
struct stp_policy_node *policy_node = to_stp_policy_node(item);
unsigned int first, last;
struct stm_device *stm;
char *p = (char *)page;
ssize_t ret = -ENODEV;
if (sscanf(p, "%u %u", &first, &last) != 2)
return -EINVAL;
mutex_lock(&stp_policy_subsys.su_mutex);
stm = policy_node->policy->stm;
if (!stm)
goto unlock;
if (first > INT_MAX || last > INT_MAX || first > last ||
last >= stm->data->sw_nchannels) {
ret = -ERANGE;
goto unlock;
}
ret = count;
policy_node->first_channel = first;
policy_node->last_channel = last;
unlock:
mutex_unlock(&stp_policy_subsys.su_mutex);
return ret;
}
static ssize_t
stp_policy_node_masters_show(struct config_item *item, char *page)
{
struct stp_policy_node *policy_node = to_stp_policy_node(item);
ssize_t count;
count = sprintf(page, "%u %u\n", policy_node->first_master,
policy_node->last_master);
return count;
}
static void stp_policy_node_release(struct config_item *item)
{
kfree(to_stp_policy_node(item));
}
void *to_pdrv_policy_node(struct config_item *item)
{
struct stp_policy_node *node = to_stp_policy_node(item);
return stp_policy_node_priv(node);
}
static void stp_policy_node_release(struct config_item *item)
{
struct stp_policy_node *node = to_stp_policy_node(item);
kfree(node);
}
