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1fd47357f7
Some third-party network libraries use PACKET_ADD_MEMBERSHIP to add MAC addresses to devices, and this patch can add support for this. Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/****************************************************************************
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* net/pkt/pkt_getsockopt.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/time.h>
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#include <stdint.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/pkt.h>
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#include "socket/socket.h"
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#include "utils/utils.h"
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#include "pkt/pkt.h"
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#ifdef CONFIG_NET_PKTPROTO_OPTIONS
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pkt_getsockopt
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*
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* Description:
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* pkt_getsockopt() retrieves the value for the option specified by the
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* 'option' argument for the socket specified by the 'psock' argument. If
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* the size of the option value is greater than 'value_len', the value
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* stored in the object pointed to by the 'value' argument will be silently
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* truncated. Otherwise, the length pointed to by the 'value_len' argument
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* will be modified to indicate the actual length of the 'value'.
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*
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* See <sys/socket.h> a complete list of values for the socket-level
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* 'option' argument. Protocol-specific options are are protocol specific
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* header files (such as nuttx/pkt.h for the case of the PKT protocol).
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*
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* Input Parameters:
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* psock Socket structure of the socket to query
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* level Protocol level to set the option
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* option identifies the option to get
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error. See psock_getsockopt() for
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* the complete list of appropriate return error codes.
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*
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****************************************************************************/
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int pkt_getsockopt(FAR struct socket *psock, int level, int option,
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FAR void *value, FAR socklen_t *value_len)
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{
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int ret = OK;
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DEBUGASSERT(value != NULL && value_len != NULL);
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if (level != SOL_PACKET)
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{
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return -ENOPROTOOPT;
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}
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if (psock->s_type != SOCK_RAW)
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{
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nerr("ERROR: Not a RAW PKT socket\n");
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return -ENOTCONN;
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}
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switch (option)
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{
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#if defined(CONFIG_NET_PKT_WRITE_BUFFERS) && CONFIG_NET_SEND_BUFSIZE > 0
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case SO_SNDBUF:
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{
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FAR struct pkt_conn_s *conn;
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conn = psock->s_conn;
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/* Verify that option is the size of an 'int'. Should also check
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* that 'value' is properly aligned for an 'int'
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*/
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if (*value_len < sizeof(int))
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{
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return -EINVAL;
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}
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*(FAR int *)value = conn->sndbufs;
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break;
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}
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#endif
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default:
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nerr("ERROR: Unrecognized RAW PKT socket option: %d\n", option);
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ret = -ENOPROTOOPT;
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break;
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}
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return ret;
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}
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#endif /* CONFIG_NET_PKTPROTO_OPTIONS */
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