/**
* rmnet_unset_logical_endpoint_config() - Un-set logical endpoing configuration
* on a device
* @dev: Device to set endpoint configuration on
* @config_id: logical endpoint id on device
*
* Retrieves the logical_endpoint_config structure and frees the egress device.
* Network device must already have association with RmNet Data driver
*
* Return:
* - RMNET_CONFIG_OK if successful
* - RMNET_CONFIG_UNKNOWN_ERROR net_device private section is null
* - RMNET_CONFIG_NO_SUCH_DEVICE device is not associated
* - RMNET_CONFIG_BAD_ARGUMENTS if logical endpoint id is out of range
*/
int rmnet_unset_logical_endpoint_config(struct net_device *dev,
int config_id)
{
LOGL("(%s, %d);", dev->name, config_id);
if (!dev
|| ((!_rmnet_is_physical_endpoint_associated(dev))
&& (!rmnet_vnd_is_vnd(dev)))) {
return RMNET_CONFIG_NO_SUCH_DEVICE;
}
return _rmnet_unset_logical_endpoint_config(dev, config_id);
}
int rmnet_vnd_get_flow_mapping(struct net_device *dev,
uint32_t map_flow_id,
uint32_t *tc_handle,
uint64_t **v4_seq,
uint64_t **v6_seq)
{
struct rmnet_vnd_private_s *dev_conf;
struct rmnet_map_flow_mapping_s *flowmap;
int i;
int error = 0;
if (!dev || !tc_handle)
BUG();
if (!rmnet_vnd_is_vnd(dev)) {
*tc_handle = 0;
return 2;
} else {
dev_conf = (struct rmnet_vnd_private_s *) netdev_priv(dev);
}
if (!dev_conf)
BUG();
if (map_flow_id == 0xFFFFFFFF) {
*tc_handle = dev_conf->flows.default_tc_handle;
*v4_seq = &dev_conf->flows.default_v4_seq;
*v6_seq = &dev_conf->flows.default_v6_seq;
if (*tc_handle == 0)
error = 1;
} else {
flowmap = &dev_conf->flows.flowmap[0];
for (i = 0; i < RMNET_MAP_MAX_FLOWS; i++) {
if ((flowmap[i].flow_id != 0)
&& (flowmap[i].flow_id == map_flow_id)) {
*tc_handle = flowmap[i].tc_handle;
*v4_seq = &flowmap[i].v4_seq;
*v6_seq = &flowmap[i].v6_seq;
error = 0;
break;
}
}
*v4_seq = 0;
*v6_seq = 0;
*tc_handle = 0;
error = 1;
}
return error;
}
/**
* rmnet_associate_network_device() - Associate network device
* @dev: Device to register with RmNet data
*
* Typically used on physical network devices. Registers RX handler and private
* metadata structures.
*
* Return:
* - RMNET_CONFIG_OK if successful
* - RMNET_CONFIG_NO_SUCH_DEVICE dev is null
* - RMNET_CONFIG_INVALID_REQUEST if the device to be associated is a vnd
* - RMNET_CONFIG_DEVICE_IN_USE if dev rx_handler is already filled
* - RMNET_CONFIG_DEVICE_IN_USE if netdev_rx_handler_register() fails
*/
int rmnet_associate_network_device(struct net_device *dev)
{
struct rmnet_phys_ep_conf_s *config;
int rc;
ASSERT_RTNL();
LOGL("(%s);\n", dev->name);
if (!dev)
return RMNET_CONFIG_NO_SUCH_DEVICE;
if (_rmnet_is_physical_endpoint_associated(dev)) {
LOGM("%s is already regestered", dev->name);
return RMNET_CONFIG_DEVICE_IN_USE;
}
if (rmnet_vnd_is_vnd(dev)) {
LOGM("%s is a vnd", dev->name);
return RMNET_CONFIG_INVALID_REQUEST;
}
config = (struct rmnet_phys_ep_conf_s *)
kmalloc(sizeof(struct rmnet_phys_ep_conf_s), GFP_ATOMIC);
if (!config)
return RMNET_CONFIG_NOMEM;
memset(config, 0, sizeof(struct rmnet_phys_ep_conf_s));
config->dev = dev;
spin_lock_init(&config->agg_lock);
rc = netdev_rx_handler_register(dev, rmnet_rx_handler, config);
if (rc) {
LOGM("netdev_rx_handler_register returns %d", rc);
kfree(config);
return RMNET_CONFIG_DEVICE_IN_USE;
}
/* Explicitly hold a reference to the device */
dev_hold(dev);
trace_rmnet_associate(dev);
return RMNET_CONFIG_OK;
}
/**
* _rmnet_get_logical_ep() - Gets the logical end point configuration
* structure for a network device
* @dev: Device to get endpoint configuration from
* @config_id: Logical endpoint id on device
* Retrieves the logical_endpoint_config structure.
*
* Return:
* - End point configuration structure
* - NULL in case of an error
*/
struct rmnet_logical_ep_conf_s *_rmnet_get_logical_ep(struct net_device *dev,
int config_id)
{
struct rmnet_phys_ep_conf_s *config;
struct rmnet_logical_ep_conf_s *epconfig_l;
if (rmnet_vnd_is_vnd(dev))
epconfig_l = rmnet_vnd_get_le_config(dev);
else {
config = _rmnet_get_phys_ep_config(dev);
if (!config)
return NULL;
if (config_id == RMNET_LOCAL_LOGICAL_ENDPOINT)
epconfig_l = &config->local_ep;
else
epconfig_l = &config->muxed_ep[config_id];
}
return epconfig_l;
}
/**
* _rmnet_set_logical_endpoint_config() - Set logical endpoing config on device
* @dev: Device to set endpoint configuration on
* @config_id: logical endpoint id on device
* @epconfig: endpoing configuration structure to set
*
* Return:
* - RMNET_CONFIG_OK if successful
* - RMNET_CONFIG_UNKNOWN_ERROR net_device private section is null
* - RMNET_CONFIG_NO_SUCH_DEVICE if device to set config on is null
* - RMNET_CONFIG_BAD_ARGUMENTS if logical endpoint id is out of range
*/
int _rmnet_set_logical_endpoint_config(struct net_device *dev,
int config_id,
struct rmnet_logical_ep_conf_s *epconfig)
{
struct rmnet_phys_ep_conf_s *config;
struct rmnet_logical_ep_conf_s *epconfig_l;
ASSERT_RTNL();
if (!dev)
return RMNET_CONFIG_NO_SUCH_DEVICE;
if (config_id < RMNET_LOCAL_LOGICAL_ENDPOINT
|| config_id >= RMNET_DATA_MAX_LOGICAL_EP)
return RMNET_CONFIG_BAD_ARGUMENTS;
if (rmnet_vnd_is_vnd(dev))
epconfig_l = rmnet_vnd_get_le_config(dev);
else {
config = _rmnet_get_phys_ep_config(dev);
if (!config)
return RMNET_CONFIG_UNKNOWN_ERROR;
if (config_id == RMNET_LOCAL_LOGICAL_ENDPOINT)
epconfig_l = &config->local_ep;
else
epconfig_l = &config->muxed_ep[config_id];
}
memcpy(epconfig_l, epconfig, sizeof(struct rmnet_logical_ep_conf_s));
if (config_id == RMNET_LOCAL_LOGICAL_ENDPOINT)
epconfig_l->mux_id = 0;
else
epconfig_l->mux_id = config_id;
return RMNET_CONFIG_OK;
}
/**
* rmnet_set_logical_endpoint_config() - Set logical endpoing configuration on a device
* @dev: Device to set endpoint configuration on
* @config_id: logical endpoint id on device
* @rmnet_mode: endpoint mode. Values from: rmnet_config_endpoint_modes_e
* @egress_device: device node to forward packet to once done processing in
* ingress/egress handlers
*
* Creates a logical_endpoint_config structure and fills in the information from
* function arguments. Calls _rmnet_set_logical_endpoint_config() to finish
* configuration. Network device must already have association with RmNet Data
* driver
*
* Return:
* - RMNET_CONFIG_OK if successful
* - RMNET_CONFIG_BAD_EGRESS_DEVICE if egress device is null
* - RMNET_CONFIG_BAD_EGRESS_DEVICE if egress device is not handled by
* RmNet data module
* - RMNET_CONFIG_UNKNOWN_ERROR net_device private section is null
* - RMNET_CONFIG_NO_SUCH_DEVICE if device to set config on is null
* - RMNET_CONFIG_BAD_ARGUMENTS if logical endpoint id is out of range
*/
int rmnet_set_logical_endpoint_config(struct net_device *dev,
int config_id,
uint8_t rmnet_mode,
struct net_device *egress_dev)
{
struct rmnet_logical_ep_conf_s epconfig;
LOGL("%s(%s, %d, %d, %s);",
__func__, dev->name, config_id, rmnet_mode, egress_dev->name);
if (!egress_dev
|| ((!_rmnet_is_physical_endpoint_associated(egress_dev))
&& (!rmnet_vnd_is_vnd(egress_dev)))) {
return RMNET_CONFIG_BAD_EGRESS_DEVICE;
}
memset(&epconfig, 0, sizeof(struct rmnet_logical_ep_conf_s));
epconfig.refcount = 1;
epconfig.rmnet_mode = rmnet_mode;
epconfig.egress_dev = egress_dev;
return _rmnet_set_logical_endpoint_config(dev, config_id, &epconfig);
}
