234 lines
7.9 KiB
C
234 lines
7.9 KiB
C
/****************************************************************************
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* net/procfs/procfs.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __NET_PROCFS_PROCFS_H
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#define __NET_PROCFS_PROCFS_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <nuttx/fs/procfs.h>
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#if defined(CONFIG_FS_PROCFS) && !defined(CONFIG_FS_PROCFS_EXCLUDE_NET)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_FS_PROCFS_EXCLUDE_ROUTE
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# undef CONFIG_NET_ROUTE
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#endif
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/* Determines the size of an intermediate buffer that must be large enough
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* to handle the longest line generated by this logic.
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*/
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#define NET_LINELEN 80
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* Describes the /net directory entries */
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enum netprocfs_entry_e
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{
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NETPROCFS_SUBDIR_DEV = 0 /* Multiple instances, e.g. /proc/net/eth0 */
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#ifdef CONFIG_NET_STATISTICS
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, NETPROCFS_SUBDIR_STAT /* /proc/net/stat */
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#ifdef CONFIG_NET_MLD
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, NETPROCFS_SUBDIR_MLD /* /proc/net/mld */
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#endif
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#endif
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#ifdef CONFIG_NET_ROUTE
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, NETPROCFS_SUBDIR_ROUTE /* /proc/net/route */
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#endif
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};
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/* This structure describes one open "file" */
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struct net_driver_s; /* Forward reference */
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struct netprocfs_file_s
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{
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struct procfs_file_s base; /* Base open file structure */
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FAR struct net_driver_s *dev; /* Current network device */
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uint8_t lineno; /* Line number */
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uint8_t linesize; /* Number of valid characters in line[] */
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uint8_t offset; /* Offset to first valid character in line[] */
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uint8_t entry; /* See enum netprocfs_entry_e */
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char line[NET_LINELEN]; /* Pre-allocated buffer for formatted lines */
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};
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/* Level 1 is the directory of attributes */
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struct netprocfs_level1_s
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{
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struct procfs_dir_priv_s base; /* Base directory private data */
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char name[NAME_MAX + 1]; /* Name of last node visited */
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#ifdef CONFIG_NETDEV_IFINDEX
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uint8_t ifindex; /* Next ifindex to visit */
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#endif
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};
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/* Line generating function type */
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typedef int (*linegen_t)(FAR struct netprocfs_file_s *netfile);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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# define EXTERN extern "C"
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extern "C"
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{
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#else
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# define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: netprocfs_read_linegen
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*
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* Description:
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* Read and format procfs data using a line generation table.
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*
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* Input Parameters:
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* priv - A reference to the network procfs file structure
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* buffer - The user-provided buffer into which device status will be
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* returned.
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* buflen - The size in bytes of the user provided buffer.
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* gentab - Table of line generation functions
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* nelems - The number of elements in the table
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned
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* on failure.
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*
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****************************************************************************/
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ssize_t netprocfs_read_linegen(FAR struct netprocfs_file_s *priv,
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FAR char *buffer, size_t buflen,
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FAR const linegen_t *gentab, int nelems);
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/****************************************************************************
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* Name: netprocfs_read_netstats
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*
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* Description:
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* Read and format network layer statistics.
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*
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* Input Parameters:
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* priv - A reference to the network procfs file structure
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* buffer - The user-provided buffer into which network status will be
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* returned.
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* bulen - The size in bytes of the user provided buffer.
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned
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* on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_STATISTICS
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ssize_t netprocfs_read_netstats(FAR struct netprocfs_file_s *priv,
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FAR char *buffer, size_t buflen);
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#endif
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/****************************************************************************
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* Name: netprocfs_read_mldstats
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*
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* Description:
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* Read and format MLD statistics.
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*
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* Input Parameters:
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* priv - A reference to the network procfs file structure
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* buffer - The user-provided buffer into which network status will be
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* returned.
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* bulen - The size in bytes of the user provided buffer.
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned
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* on failure.
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*
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****************************************************************************/
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#if defined(CONFIG_NET_STATISTICS) && defined(CONFIG_NET_MLD)
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ssize_t netprocfs_read_mldstats(FAR struct netprocfs_file_s *priv,
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FAR char *buffer, size_t buflen);
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#endif
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/****************************************************************************
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* Name: netprocfs_read_routes
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*
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* Description:
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* Read and format routing table entries.
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*
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* Input Parameters:
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* priv - A reference to the network procfs file structure
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* buffer - The user-provided buffer into which network status will be
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* returned.
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* bulen - The size in bytes of the user provided buffer.
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned
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* on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_ROUTE
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ssize_t netprocfs_read_routes(FAR struct netprocfs_file_s *priv,
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FAR char *buffer, size_t buflen);
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#endif
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/****************************************************************************
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* Name: netprocfs_read_devstats
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*
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* Description:
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* Read and format network device statistics.
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*
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* Input Parameters:
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* priv - A reference to the network procfs file structure
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* buffer - The user-provided buffer into which device status will be
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* returned.
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* bulen - The size in bytes of the user provided buffer.
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned
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* on failure.
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*
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****************************************************************************/
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ssize_t netprocfs_read_devstats(FAR struct netprocfs_file_s *priv,
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FAR char *buffer, size_t buflen);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_FS_PROCFS && !CONFIG_FS_PROCFS_EXCLUDE_NET */
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#endif /* __NET_PROCFS_PROCFS_H */
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