124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
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/*
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* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This file was originally distributed by Qualcomm Atheros, Inc.
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* under proprietary terms before Copyright ownership was assigned
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* to the Linux Foundation.
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*/
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#ifndef DSRC_SOCK_H
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#define DSRC_SOCK_H
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#include <sys/socket.h>
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#include <netpacket/packet.h>
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#include <net/ethernet.h> /* the L2 protocols */
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#include <unistd.h>
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#include <stdint.h>
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/**
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* @file dsrc_sock.h
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* @brief Simplified socket interfaces for use with dsrc library.
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*/
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#include "dsrc_ocb.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @addtogroup simplified_socket_interfaces
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@{ */
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/**
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* Opens a new socket and initializes the given sockaddr buffer.
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*
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* @param[in] iface_name Interface name to use, e.g., wlanocb0.
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* @param[out] socket On success, returns the socket descriptor. The caller must
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* release this socket with close().
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* @param[out] sockaddr Given struct sockaddr_ll buffer, which will be initialized
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* for subsequent use with bind() and sendto().
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*
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* @return
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* int returns 0 on success.
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* - EPERM -- socket() creation failed; check errno for further details.
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* - EAFNOSUPPORT -- Failed to find the interface.
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* - EACCES -- Failed to get the MAC address of the device.
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*/
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int dsrc_socket_open(const char* iface_name, int *socket,
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struct sockaddr_ll *sockaddr);
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/**
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* Closes the socket if it is open.
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*
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* @param[in] sock_fd Socket file descriptor
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*
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* @return
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* int
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*/
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static __inline
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int dsrc_socket_closeif(int* sock_fd) {
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int rc = 0;
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int sock = *sock_fd;
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*sock_fd = -1;
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if (0 <= sock) {
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rc = close(sock);
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}
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return rc;
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}
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/**
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* Receives an Ethernet frame and optionally provides the
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* per-packet header, if present.
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*
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* @param[in] sock Socket from which to receive.
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* @param[in] buf Buffer for collecting the frame.
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* @param[in] len Length of the buffer; it must atleast be 0x600.
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* @param[in] flags Flag
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* @param[in] rx_stats Pointer to the Rx stats in buf.
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* @param[in] frame Pointer to the 802.3 frame in buf.
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* @param[in] frame_len Length of the frame.
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*
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* @return
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* ssize_t -ve value on error; on success, total bytes received
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* in buf.
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*/
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ssize_t dsrc_socket_recv_eth_frame_and_stats(int sock, uint8_t *buf, size_t len,
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int flags, struct dsrc_ocb_rx_stats_hdr** rx_stats,
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uint8_t** frame, ssize_t* frame_len);
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/** @} */ /* end_addtogroup_simplified_socket_interfaces */
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#ifdef __cplusplus
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}
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#endif
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#endif /* !DSRC_SOCK_H */
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