da8fb057e5
The current read from network is working from up to down - we have some protocol needing the data from the network, so we build the buffer space for that protocol, add the extra space for headers and pass this buffer down to be filled by nif get call in hope, we have guessed the incoming packet size right. Amazingly enough this approach mostly does work, but not always... So, this update does work from down to up - we allocate buffer (based on MTU or frame size info), fill it up, and pass on for upper layers. The obvious problem is that when we should free the buffer - if at all. In the current implementation the upper layer will free the packet on error or when the packet is no longer needed. While working on the issue, the additional issue did pop up - the bios implementation does not have generic get/put interface but is using pxe udpsend/udpreceive instead. So the udp calls are gone and undi interface is implemented instead. Which in turn means slight other changes as we do not need to have duplicated pxe implementation and can just use dev_net. To align packet content, the actual read from nic is using shifted buffer by ETHER_ALIGN (2). Reviewed by: bapt Differential Revision: https://reviews.freebsd.org/D10232
132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
/* $NetBSD: net.h,v 1.10 1995/10/20 00:46:30 cgd Exp $ */
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/*
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* Copyright (c) 1993 Adam Glass
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* Copyright (c) 1992 Regents of the University of California.
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* All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _STAND_NET_H
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#define _STAND_NET_H
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#ifndef _KERNEL /* XXX - see <netinet/in.h> */
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#undef __IPADDR
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#define __IPADDR(x) htonl((u_int32_t)(x))
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#endif
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#include "iodesc.h"
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#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
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enum net_proto {
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NET_NONE,
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NET_NFS,
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NET_TFTP
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};
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/* Returns true if n_long's on the same net */
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#define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
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#define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
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#define MAXTMO 120 /* seconds */
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#define MINTMO 2 /* seconds */
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#define FNAME_SIZE 128
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#define IFNAME_SIZE 16
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#define RECV_SIZE 1536 /* XXX delete this */
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/*
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* How much room to leave for headers:
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* 14: struct ether_header
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* 20: struct ip
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* 8: struct udphdr
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* That's 42 but let's pad it out to 48 bytes.
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*/
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#define ETHER_SIZE 14
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#define HEADER_SIZE 48
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extern u_char bcea[6];
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extern char rootpath[FNAME_SIZE];
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extern char bootfile[FNAME_SIZE];
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extern char hostname[FNAME_SIZE];
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extern int hostnamelen;
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extern char domainname[FNAME_SIZE];
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extern int domainnamelen;
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extern int netproto;
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extern char ifname[IFNAME_SIZE];
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/* All of these are in network order. */
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extern struct in_addr myip;
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extern struct in_addr rootip;
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extern struct in_addr swapip;
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extern struct in_addr gateip;
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extern struct in_addr nameip;
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extern n_long netmask;
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extern u_int intf_mtu;
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extern int debug; /* defined in the machdep sources */
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extern struct iodesc sockets[SOPEN_MAX];
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/* ARP/RevARP functions: */
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u_char *arpwhohas(struct iodesc *, struct in_addr);
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void arp_reply(struct iodesc *, void *);
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int rarp_getipaddress(int);
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/* Link functions: */
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ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
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u_char *dea, int etype);
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ssize_t readether(struct iodesc *, void **, void **, time_t, uint16_t *);
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ssize_t sendudp(struct iodesc *, void *, size_t);
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ssize_t readudp(struct iodesc *, void **, void **, time_t);
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ssize_t sendrecv(struct iodesc *,
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ssize_t (*)(struct iodesc *, void *, size_t),
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void *, size_t,
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ssize_t (*)(struct iodesc *, void **, void **, time_t),
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void **, void **);
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/* bootp/DHCP */
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void bootp(int, int);
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/* Utilities: */
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char *ether_sprintf(u_char *);
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int in_cksum(void *, int);
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char *inet_ntoa(struct in_addr);
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char *intoa(n_long); /* similar to inet_ntoa */
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n_long inet_addr(char *);
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/* Machine-dependent functions: */
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time_t getsecs(void);
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#endif /* ! _STAND_NET_H */
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