You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: sctp_linux.go
    path of file: ./repos/kubernetes/vendor/github.com/ishidawataru/sctp
    
    the code of the file until where you have to start completion: // +build linux,!386
// Copyright 2019 Wataru Ishida. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this 
    
func parseSndRcvInfo(b []byte) (*SndRcvInfo, error) {
	msgs, err := syscall.ParseSocketControlMessage(b)
	if err != nil {
		return nil, err
	}
	for _, m := range msgs {
		if m.Header.Level == syscall.IPPROTO_SCTP {
			switch m.Header.Type {
			case SCTP_CMSG_SNDRCV:
				return (*SndRcvInfo)(unsafe.Pointer(&m.Data[0])), nil
			}
		}
	}
	return nil, nil
}