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/*!
* @file librmnetctl.h
* @brief rmnet control API's header file
*/
#ifndef LIBRMNETCTL_H
#define LIBRMNETCTL_H
/* RMNET API succeeded */
#define RMNETCTL_SUCCESS 0
/* RMNET API encountered an error while executing within the library. Check the
* error code in this case */
#define RMNETCTL_LIB_ERR 1
/* RMNET API encountered an error while executing in the kernel. Check the
* error code in this case */
#define RMNETCTL_KERNEL_ERR 2
/* RMNET API encountered an error because of invalid arguments*/
#define RMNETCTL_INVALID_ARG 3
/* Flag to associate a network device*/
#define RMNETCTL_DEVICE_ASSOCIATE 1
/* Flag to unassociate a network device*/
#define RMNETCTL_DEVICE_UNASSOCIATE 0
/* Flag to create a new virtual network device*/
#define RMNETCTL_NEW_VND 1
/* Flag to free a new virtual network device*/
#define RMNETCTL_FREE_VND 0
/* Flag to add a new flow*/
#define RMNETCTL_ADD_FLOW 1
/* Flag to delete an existing flow*/
#define RMNETCTL_DEL_FLOW 0
enum rmnetctl_error_codes_e {
/* API succeeded. This should always be the first element. */
RMNETCTL_API_SUCCESS = 0,
RMNETCTL_API_FIRST_ERR = 1,
/* API failed because not enough memory to create buffer to send
* message */
RMNETCTL_API_ERR_REQUEST_INVALID = RMNETCTL_API_FIRST_ERR,
/* API failed because not enough memory to create buffer for the
* response message */
RMNETCTL_API_ERR_RESPONSE_INVALID = 2,
/* API failed because could not send the message to kernel */
RMNETCTL_API_ERR_MESSAGE_SEND = 3,
/* API failed because could not receive message from the kernel */
RMNETCTL_API_ERR_MESSAGE_RECEIVE = 4,
RMNETCTL_INIT_FIRST_ERR = 5,
/* Invalid process id. So return an error. */
RMNETCTL_INIT_ERR_PROCESS_ID = RMNETCTL_INIT_FIRST_ERR,
/* Invalid socket descriptor id. So return an error. */
RMNETCTL_INIT_ERR_NETLINK_FD = 6,
/* Could not bind the socket to the Netlink file descriptor */
RMNETCTL_INIT_ERR_BIND = 7,
/* Invalid user id. Only root has access to this function. (NA) */
RMNETCTL_INIT_ERR_INVALID_USER = 8,
RMNETCTL_API_SECOND_ERR = 9,
/* API failed because the RmNet handle for the transaction was NULL */
RMNETCTL_API_ERR_HNDL_INVALID = RMNETCTL_API_SECOND_ERR,
/* API failed because the request buffer for the transaction was NULL */
RMNETCTL_API_ERR_REQUEST_NULL = 10,
/* API failed because the response buffer for the transaction was NULL*/
RMNETCTL_API_ERR_RESPONSE_NULL = 11,
/* API failed because the request and response type do not match*/
RMNETCTL_API_ERR_MESSAGE_TYPE = 12,
/* API failed because the return type is invalid */
RMNETCTL_API_ERR_RETURN_TYPE = 13,
/* API failed because the string was truncated */
RMNETCTL_API_ERR_STRING_TRUNCATION = 14,
/* These error are 1-to-1 with rmnet_data config errors in rmnet_data.h
for each conversion.
please keep the enums synced.
*/
RMNETCTL_KERNEL_FIRST_ERR = 15,
/* No error */
RMNETCTL_KERNEL_ERROR_NO_ERR = RMNETCTL_KERNEL_FIRST_ERR,
/* Invalid / unsupported message */
RMNETCTL_KERNEL_ERR_UNKNOWN_MESSAGE = 16,
/* Internal problem in the kernel module */
RMNETCTL_KERNEL_ERR_INTERNAL = 17,
/* Kernel is temporarily out of memory */
RMNETCTL_KERNEL_ERR_OUT_OF_MEM = 18,
/* Device already exists / Still in use */
RMETNCTL_KERNEL_ERR_DEVICE_IN_USE = 19,
/* Invalid request / Unsupported scenario */
RMNETCTL_KERNEL_ERR_INVALID_REQUEST = 20,
/* Device doesn't exist */
RMNETCTL_KERNEL_ERR_NO_SUCH_DEVICE = 21,
/* One or more of the arguments is invalid */
RMNETCTL_KERNEL_ERR_BAD_ARGS = 22,
/* Egress device is invalid */
RMNETCTL_KERNEL_ERR_BAD_EGRESS_DEVICE = 23,
/* TC handle is full */
RMNETCTL_KERNEL_ERR_TC_HANDLE_FULL = 24,
/* This should always be the last element */
RMNETCTL_API_ERR_ENUM_LENGTH
};
#define RMNETCTL_ERR_MSG_SIZE 100
/*!
* @brief Contains a list of error message from API
*/
char rmnetctl_error_code_text
[RMNETCTL_API_ERR_ENUM_LENGTH][RMNETCTL_ERR_MSG_SIZE] = {
"ERROR: API succeeded\n",
"ERROR: Unable to allocate the buffer to send message\n",
"ERROR: Unable to allocate the buffer to receive message\n",
"ERROR: Could not send the message to kernel\n",
"ERROR: Unable to receive message from the kernel\n",
"ERROR: Invalid process id\n",
"ERROR: Invalid socket descriptor id\n",
"ERROR: Could not bind to netlink socket\n",
"ERROR: Only root can access this API\n",
"ERROR: RmNet handle for the transaction was NULL\n",
"ERROR: Request buffer for the transaction was NULL\n",
"ERROR: Response buffer for the transaction was NULL\n",
"ERROR: Request and response type do not match\n",
"ERROR: Return type is invalid\n",
"ERROR: String was truncated\n",
/* Kernel errors */
"ERROR: Kernel call succeeded\n",
"ERROR: Invalid / Unsupported directive\n",
"ERROR: Internal problem in the kernel module\n",
"ERROR: The kernel is temporarily out of memory\n",
"ERROR: Device already exists / Still in use\n",
"ERROR: Invalid request / Unsupported scenario\n",
"ERROR: Device doesn't exist\n",
"ERROR: One or more of the arguments is invalid\n",
"ERROR: Egress device is invalid\n",
"ERROR: TC handle is full\n"
};
/*===========================================================================
DEFINITIONS AND DECLARATIONS
===========================================================================*/
typedef struct rmnetctl_hndl_s rmnetctl_hndl_t;
/*!
* @brief Public API to initialize the RMNET control driver
* @details Allocates memory for the RmNet handle. Creates and binds to a and
* netlink socket if successful
* @param **rmnetctl_hndl_t_val RmNet handle to be initialized
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnetctl_init(rmnetctl_hndl_t **hndl, uint16_t *error_code);
/*!
* @brief Public API to clean up the RmNeT control handle
* @details Close the socket and free the RmNet handle
* @param *rmnetctl_hndl_t_val RmNet handle to be initialized
* @return void
*/
void rmnetctl_cleanup(rmnetctl_hndl_t *hndl);
/*!
* @brief Public API to register/unregister a RMNET driver on a particular device
* @details Message type is RMNET_NETLINK_ASSOCIATE_NETWORK_DEVICE or
* RMNET_NETLINK_UNASSOCIATE_NETWORK_DEVICE based on the flag for assoc_dev
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param dev_name Device on which to register the RmNet driver
* @param error_code Status code of this operation
* @param assoc_dev registers the device if RMNETCTL_DEVICE_ASSOCIATE or
* unregisters the device if RMNETCTL_DEVICE_UNASSOCIATE
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_associate_network_device(rmnetctl_hndl_t *hndl,
const char *dev_name,
uint16_t *error_code,
uint8_t assoc_dev);
/*!
* @brief Public API to get if a RMNET driver is registered on a particular
* device
* @details Message type is RMNET_NETLINK_GET_NETWORK_DEVICE_ASSOCIATED.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param dev_name Device on which to check if the RmNet driver is registered
* @param register_status 1 if RmNet data driver is registered on a particular
* device, 0 if not
* @param error_code Status code of this operation
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_get_network_device_associated(rmnetctl_hndl_t *hndl,
const char *dev_name,
int *register_status,
uint16_t *error_code);
/*!
* @brief Public API to set the egress data format for a particular link.
* @details Message type is RMNET_NETLINK_SET_LINK_EGRESS_DATA_FORMAT.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param egress_flags Egress flags to be set on the device
* @param agg_size Max size of aggregated packets
* @param agg_count Number of packets to be aggregated
* @param dev_name Device on which to set the egress data format
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_set_link_egress_data_format(rmnetctl_hndl_t *hndl,
uint32_t egress_flags,
uint16_t agg_size,
uint16_t agg_count,
const char *dev_name,
uint16_t *error_code);
/*!
* @brief Public API to get the egress data format for a particular link.
* @details Message type is RMNET_NETLINK_GET_LINK_EGRESS_DATA_FORMAT.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param dev_name Device on which to get the egress data format
* @param egress_flags Egress flags from the device
* @param agg_count Number of packets to be aggregated
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_get_link_egress_data_format(rmnetctl_hndl_t *hndl,
const char *dev_name,
uint32_t *egress_flags,
uint16_t *agg_size,
uint16_t *agg_count,
uint16_t *error_code);
/*!
* @brief Public API to set the ingress data format for a particular link.
* @details Message type is RMNET_NETLINK_SET_LINK_INGRESS_DATA_FORMAT.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param ingress_flags Ingress flags from the device
* @param tail_spacing Tail spacing needed for the packet
* @param dev_name Device on which to set the ingress data format
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_set_link_ingress_data_format_tailspace(rmnetctl_hndl_t *hndl,
uint32_t ingress_flags,
uint8_t tail_spacing,
const char *dev_name,
uint16_t *error_code);
/*!
* @brief Public API to get the ingress data format for a particular link.
* @details Message type is RMNET_NETLINK_GET_LINK_INGRESS_DATA_FORMAT.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param dev_name Device on which to get the ingress data format
* @param ingress_flags Ingress flags from the device
* @param tail_spacing Tail spacing needed for the packet
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_get_link_ingress_data_format_tailspace(rmnetctl_hndl_t *hndl,
const char *dev_name,
uint32_t *ingress_flags,
uint8_t *tail_spacing,
uint16_t *error_code);
inline int rmnet_set_link_ingress_data_format(rmnetctl_hndl_t *hndl,
uint32_t ingress_flags,
const char *dev_name,
uint16_t *error_code)
{
return rmnet_set_link_ingress_data_format_tailspace(hndl,
ingress_flags,
0,
dev_name,
error_code);
}
inline int rmnet_get_link_ingress_data_format(rmnetctl_hndl_t *hndl,
const char *dev_name,
uint32_t *ingress_flags,
uint16_t *error_code)
{
return rmnet_get_link_ingress_data_format_tailspace(hndl,
dev_name,
ingress_flags,
0,
error_code);
}
/*!
* @brief Public API to set the logical endpoint configuration for a
* particular link.
* @details Message type is RMNET_NETLINK_SET_LOGICAL_EP_CONFIG.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param logical_ep_id Logical end point id on which the configuration is to be
* set
* @param rmnet_mode RmNet mode to be set on the device
* @param dev_name Device on which to set the logical end point configuration
* @param egress_dev_name Egress Device if operating in bridge mode
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_set_logical_ep_config(rmnetctl_hndl_t *hndl,
int32_t ep_id,
uint8_t operating_mode,
const char *dev_name,
const char *next_dev,
uint16_t *error_code);
/*!
* @brief Public API to un-set the logical endpoint configuration for a
* particular link.
* @details Message type is RMNET_NETLINK_UNSET_LOGICAL_EP_CONFIG.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param logical_ep_id Logical end point id on which the configuration is to be
* un-set
* @param dev_name Device on which to un-set the logical end point configuration
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_unset_logical_ep_config(rmnetctl_hndl_t *hndl,
int32_t ep_id,
const char *dev_name,
uint16_t *error_code);
/*!
* @brief Public API to get the logical endpoint configuration for a
* particular link.
* @details Message type is RMNET_NETLINK_GET_LOGICAL_EP_CONFIG.
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param logical_ep_id Logical end point id from which to get the configuration
* @param dev_name Device on which to get the logical end point configuration
* @param rmnet_mode RmNet mode from the device
* @param next_dev Egress Device name
* @param next_dev_len Egress Device I/O string len
* @param error_code Status code of this operation returned from the kernel
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_get_logical_ep_config(rmnetctl_hndl_t *hndl,
int32_t ep_id,
const char *dev_name,
uint8_t *operating_mode,
char **next_dev,
uint32_t next_dev_len,
uint16_t *error_code);
/*!
* @brief Public API to create a new virtual device node
* @details Message type is RMNET_NETLINK_NEW_VND or
* RMNETCTL_FREE_VND based on the flag for new_vnd
* @param hndl RmNet handle for the Netlink message
* @param id Node number to create the virtual network device node
* @param error_code Status code of this operation returned from the kernel
* @param new_vnd creates a new virtual network device if RMNETCTL_NEW_VND or
* frees the device if RMNETCTL_FREE_VND
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_new_vnd(rmnetctl_hndl_t *hndl,
uint32_t id,
uint16_t *error_code,
uint8_t new_vnd);
/*!
* @brief Public API to create a new virtual device node with a custom prefix
* @details Message type is RMNET_NETLINK_NEW_VND or
* RMNETCTL_FREE_VND based on the flag for new_vnd
* @param hndl RmNet handle for the Netlink message
* @param id Node number to create the virtual network device node
* @param error_code Status code of this operation returned from the kernel
* @param new_vnd creates a new virtual network device if RMNETCTL_NEW_VND or
* frees the device if RMNETCTL_FREE_VND
* @param prefix Prefix to be used when naming the network interface
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_new_vnd_prefix(rmnetctl_hndl_t *hndl,
uint32_t id,
uint16_t *error_code,
uint8_t new_vnd,
const char *prefix);
/*!
* @brief API to get the ASCII name of a virtual network device from its ID
* @param hndl RmNet handle for the Netlink message
* @param id Node number to create the virtual network device node
* @param error_code Status code of this operation returned from the kernel
* @param buf Buffer to store ASCII representation of device name
* @param buflen Length of the buffer
* @param prefix Prefix to be used when naming the network interface
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_get_vnd_name(rmnetctl_hndl_t *hndl,
uint32_t id,
uint16_t *error_code,
char *buf,
uint32_t buflen);
/*!
* @brief Public API to set or clear a flow
* @details Message type is RMNET_NETLINK_ADD_VND_TC_FLOW or
* RMNET_NETLINK_DEL_VND_TC_FLOW based on the flag for set_flow
* @param *rmnetctl_hndl_t_val RmNet handle for the Netlink message
* @param id Node number to set or clear the flow on the virtual network
* device node
* @param map_flow_id Flow handle of the modem
* @param tc_flow_id Software flow handle
* @param set_flow sets the flow if RMNET_NETLINK_SET_FLOW or
* clears the flow if RMNET_NETLINK_CLEAR_FLOW
* @return RMNETCTL_SUCCESS if successful
* @return RMNETCTL_LIB_ERR if there was a library error. Check error_code
* @return RMNETCTL_KERNEL_ERR if there was an error in the kernel.
* Check error_code
* @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API
*/
int rmnet_add_del_vnd_tc_flow(rmnetctl_hndl_t *hndl,
uint32_t id,
uint32_t map_flow_id,
uint32_t tc_flow_id,
uint8_t set_flow,
uint16_t *error_code);
#endif /* not defined LIBRMNETCTL_H */