2000-02-03 Roland McGrath <roland@baalperazim.frob.com>

	Complete overhaul of pfinet based on the IPv4 networking code from the
	Linux 2.2.12 kernel sources.  This page describes a single unified set
	of interdependent changes, but there are so many changes that I have
	broken up the log entry into paragraphs based on rough topical
	divisions of the work involved.

	Subset of verbatim Linux 2.2.12 sources imported on a vendor branch.
	* linux-src: New directory, see README for details.
	* README: New file, describes linux-src layout and procedures for
	tracking Linux source updates.

	Light modifications to linux-src files to avoid really bending over
	backwards with the glue macros.  All modifications to files in
	linux-src are conditionalized by #ifdef _HURD_.
	* linux-src/include/linux/net.h [_HURD_] (struct socket): New members
	refcnt and identity; elide members fasync_list, file.
	* linux-src/include/linux/rtnetlink.h [! CONFIG_RTNETLINK]
	(rtnl_shlock, rtnl_shunlock) [! _HURD_]: Conditionalize contents on
	this, making these no-ops #ifdef _HURD_.
	* linux-src/net/core/dev.c [_HURD_] (dev_ioctl): Don't define the
	function, instead #define it to 0.
	* linux-src/net/ipv4/af_inet.c [_HURD_] (inet_ioctl): Likewise.
	* linux-src/net/ipv4/arp.c [_HURD_] (arp_ioctl): Likewise.
	* linux-src/net/ipv4/udp.c [_HURD_] (udp_ioctl): Likewise.
	* linux-src/net/ipv4/tcp.c [_HURD_] (tcp_ioctl): Likewise.
	[_HURD_] (tcp_tiocinq): New function, TIOCINQ code from tcp_ioctl.
	* linux-src/net/ipv4/devinet.c [_HURD_] (devinet_ioctl): Don't define
	the function, instead #define it to 0.
	[_HURD_] (configure_device): New function, cobbled from SIOCSIFADDR
	and SIOCSIFNETMASK code from devinet_ioctl.

	* glue-include/asm, glue-include/linux: New directories.
	These contain glue kludge headers that replace all of the
	Linux <asm/*.h> headers except checksum.h, and several of
	the Linux <linux/*.h> headers (the remainder come from
	linux-src/include/linux and are mostly unmodified).
	* glue-include/asm/atomic.h: New file, glue replacement header.
	* glue-include/asm/bitops.h: New file, glue replacement header.
	* glue-include/asm/byteorder.h: New file, glue replacement header.
	* glue-include/asm/checksum.h: New file, glue replacement header.
	* glue-include/asm/errno.h: New file, glue replacement header.
	* glue-include/asm/hardirq.h: New file, glue replacement header.
	* glue-include/asm/init.h: New file, glue replacement header.
	* glue-include/asm/segment.h: New file, glue replacement header.
	* glue-include/asm/spinlock.h: New file, glue replacement header.
	* glue-include/asm/system.h: New file, glue replacement header.
	* glue-include/asm/types.h: New file, glue replacement header.
	* glue-include/asm/uaccess.h: New file, glue replacement header.
	* glue-include/linux/autoconf.h: New file, glue replacement header.
	* glue-include/linux/binfmts.h: New file, glue replacement header.
	* glue-include/linux/config.h: New file, glue replacement header.
	* glue-include/linux/errno.h: New file, glue replacement header.
	* glue-include/linux/fcntl.h: New file, glue replacement header.
	* glue-include/linux/fs.h: New file, glue replacement header.
	* glue-include/linux/in.h: New file, glue replacement header.
	* glue-include/linux/in6.h: New file, glue replacement header.
	* glue-include/linux/interrupt.h: New file, glue replacement header.
	* glue-include/linux/ioctl.h: New file, glue replacement header.
	* glue-include/linux/ipv6.h: New file, glue replacement header.
	* glue-include/linux/kernel.h: New file, glue replacement header.
	* glue-include/linux/limits.h: New file, glue replacement header.
	* glue-include/linux/major.h: New file, glue replacement header.
	* glue-include/linux/malloc.h: New file, glue replacement header.
	* glue-include/linux/mm.h: New file, glue replacement header.
	* glue-include/linux/param.h: New file, glue replacement header.
	* glue-include/linux/personality.h: New file, glue replacement header.
	* glue-include/linux/poll.h: New file, glue replacement header.
	* glue-include/linux/proc_fs.h: New file, glue replacement header.
	* glue-include/linux/sched.h: New file, glue replacement header.
	* glue-include/linux/slab.h: New file, glue replacement header.
	* glue-include/linux/socket.h: New file, glue replacement header.
	* glue-include/linux/sockios.h: New file, glue replacement header.
	* glue-include/linux/stat.h: New file, glue replacement header.
	* glue-include/linux/string.h: New file, glue replacement header.
	* glue-include/linux/termios.h: New file, glue replacement header.
	* glue-include/linux/time.h: New file, glue replacement header.
	* glue-include/linux/timer.h: New file, glue replacement header.
	* glue-include/linux/timex.h: New file, glue replacement header.
	* glue-include/linux/types.h: New file, glue replacement header.
	* glue-include/linux/un.h: New file, glue replacement header.
	* glue-include/linux/version.h: New file, glue replacement header.
	* glue-include/linux/wait.h: New file, glue replacement header.

	* kmem_cache.c: New file.  Glue code replaces Linux kmem_cache_t et al.
	* stubs.c: New file.  No-op functions and stub variables for a few
	things the Linux networking code needs to link.

	* Makefile (core-srcs, arch-lib-srcs, ethernet-srcs, ipv4-srcs): New
	variables, listing sources used from linux-src subdirectories.
	(LINUXSRCS): Define using those.
	(SRCS): Remove devices.c; add kmem_cache.c, stubs.c.
	(UNUSEDSRC): Variable removed.
	(vpath %.c): Remove vpath for $(srcdir)/linux-inet directory.
	Add vpaths for $(srcdir)/linux-src subdirectories.
	(CPPFLAGS): Add -D_HURD_SYSTYPE defining it to $(asm_syntax) as a
	double-quoted string.  Add -I's for glue-include and linux-src/include.

	* pfinet.h: Include <sys/socket.h>, and not <linux/netdevice.h>.
	(master_device): Remove decl.
	(global_lock, packet_queue_lock): Remove common defns.
	(global_lock, net_bh_lock): Declare them as externs.
	(struct sockaddr): Remove len member, make address member just a
	struct sockaddr rather than a 0-length array.
	(setup_loopback_device, become_task_protid, become_task): Remove decls.
	(ethernet_initialize): Declare it.
	(input_work_thread): Remove decl.
	(net_bh_thread): Declare it.
	(tcp_readable): Remove decl.
	(tcp_tiocinq): Declare it.

	* config.h: Rewritten based on Linux 2.2.12 set of CONFIG_* options.
	(CONFIG_NET, CONFIG_INET, CONFIG_SKB_LARGE): These are the only
	Linux config options we set.
	(CONFIG_IP_NOSIOCRT): New macro (not a proper config option, but
	used conveniently in the code).
	* ethernet.c (ethernet_set_multi): Take only one parameter.
	Remove assert, since we always get passed IGMP_ALL_HOSTS.
	(ethernet_thread): Make static.
	(ethernet_demuxer): Use __mutex_lock in place of mutex_lock, so as to
	get cthreads instead of linux/spinlock.h glue macros.  Lock
	net_bh_lock instead of global_lock.  Set SKB->protocol with
	eth_type_trans before calling netif_rx.
	(ethernet_initialize): New function, one-time initialization broken
	out of ethernet_open.
	(ethernet_open): Ports setup moved to ethernet_initialize.
	Don't use `errno' to avoid glue conflicts.
	Use get_privileged_ports here to get the master device port, and
	deallocate it after calling device_open.
	(ethernet_xmit): Use assert_perror.  Only one arg to dev_kfree_skb now.
	(setup_ethernet_device): Change initializations for structure changes.
	Call dev_init_buffers and register_netdevice on the device.
	* timer-emul.c (all functions): Use __mutex_lock instead of mutex_lock.
	Adjust for renaming of `prevp' member to `prev' in struct timer_list.
	(mod_timer): New function.
	* socket.c (proto_ops): Variable removed.
	(net_families): New variable replaces it.
	(sock_register): Rewritten for new calling convention, set
	net_families rather than proto_ops.
	(make_sock_user, clean_socketport, sock_alloc, sock_release):
	Functions moved here from misc.c.
	* sched.c (packet_queue_lock): Variable removed.
	(net_bh_lock, net_bh_wakeup): New variables.
	(current): Variable removed (now a macro in the glue headers).
	(interruptible_sleep_on, wake_up_interruptible): Functions removed.
	They are replaced by inlines in the glue headers.
	(become_task, become_task_protid): Functions removed; they are
	replaced by macros in glue-include/linux/sched.h.
	(net_bh_worker): New function.
	* loopback.c: Completely rewritten, mostly copied from linux-2.2.12's
	drivers/net/loopback.c source file.

	* io-ops.c (all functions): Use __mutex_lock in place of mutex_lock.
	(S_io_write): Call ops->sendmsg instead of ops->write,
	which no longer exists.  If O_NONBLOCK is set, set MSG_DONTWAIT in
	msg_flags.
	(S_io_read): Call ops->recvmsg instead of ops->read,
	which no longer exists  If O_NONBLOCK is set, pass MSG_DONTWAIT.
	(S_io_readable): Use USER->sock->data in place of USER->sock->sk.
	For SOCK_STREAM and SOCK_SEQPACKET types, call tcp_tiocinq.
	(S_io_set_all_openmodes, S_io_get_openmodes, S_io_set_some_openmodes,
	S_io_clear_some_openmodes): Member USER->sock->userflags is now
	renamed USER->sock->flags.
	(S_io_select): Completely rewritten using ops->poll.
	(select_wait): Function removed.
	(S_io_stat): Set st_mode to reflect S_IFSOCK.
	* socket-ops.c (all functions): Use __mutex_lock instead of mutex_lock.
	(S_socket_create): Don't set SOCK->ops or call SOCK->ops->create.
	Instead, call net_families[PF_INET]->create.
	(S_socket_listen): Remove extra checks; just call ops->listen.
	(S_socket_accept): Remove extra checks before ops->accept call.
	Avoid use of goto.
	(S_socket_connect): Remove extra checks; just call ops->connect.
	(S_socket_bind): Adjust for struct sock_addr changes.
	(S_socket_create_address): Likewise.
	(S_socket_whatis_address): Likewise.
	(S_socket_connect2): Don't diddle data structures after
	ops->socketpair call.
	(S_socket_getopt): Use sock_getsockopt if LEVEL is SOL_SOCKET.
	Accept any data size, not just sizeof (int).
	(S_socket_setopt): Use sock_setsockopt if LEVEL is SOL_SOCKET.
	(S_socket_send): Always use ops->sendmsg instead of ops->send or
	ops->sendto, which no longer exist.  If O_NONBLOCK is set, set
	MSG_DONTWAIT in msg_flags.
	(S_socket_recv): Always use ops->recvmsg instead of ops->recv, which
	no longer exists.  If O_NONBLOCK is set, set MSG_DONTWAIT in flags.
	Check for error from S_socket_create_address.

	* main.c (find_device): Don't try to set ether_dev.pa_mask (it's gone).
	(main): Don't call init_devices.  Call ethernet_initialize.
	Start net_bh_worker instead of input_work_thread.  Don't call
	setup_loopback_device.  Instead, take global_lock, do prepare_current,
	and then call sk_init, skb_init, inet_proto_init, and net_dev_init.
	Keep global_lock held while calling argp_parse.
	Call arrange_shutdown_notification only after all that.
	Fix error call for "contacting parent" to pass ERR instead of errno.
	* options.c (ADDR): #undef before defining macro.
	(parse_opt): #if 0 out EDESTADDRREQ check (I don't understand it).
	To apply settings, call configure_devices.
	(ADD_ADDR_OPT): #if 0 --address and --netmask options.  Needs fixed.
	* misc.c (make_sock_user, clean_socketport, sock_alloc, sock_release):
	Functions moved to socket.c.
	(sock_release_peer): Function removed.
	(make_sockaddr_port): Use struct sockaddr_storage to size buffer.
	Fix size calculation for new struct sock_addr layout.
	Initialize sa_family and sa_len of new struct sock_addr.

	Remove the old Linux (2.0.??) network stack and the glue code for it.
	* linux-inet, asm, linux: Directories and all files removed.
	Some of the new files in glue-include came from the old glue headers
	in the asm and linux directories, but most were substantially modified.
	* devices.c: File removed.  The equivalent glue is now elsewhere.

1 files changed, 0 insertions, 147 deletions

diff --git a/pfinet/linux/ip_fw.h b/pfinet/linux/ip_fw.h
deleted file mode 100644
index f80cccbf..00000000
--- a/pfinet/linux/ip_fw.h
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- *	IP firewalling code. This is taken from 4.4BSD. Please note the 
- *	copyright message below. As per the GPL it must be maintained
- *	and the licenses thus do not conflict. While this port is subject
- *	to the GPL I also place my modifications under the original 
- *	license in recognition of the original copyright. 
- *
- *	Ported from BSD to Linux,
- *		Alan Cox 22/Nov/1994.
- *	Merged and included the FreeBSD-Current changes at Ugen's request
- *	(but hey it's a lot cleaner now). Ugen would prefer in some ways
- *	we waited for his final product but since Linux 1.2.0 is about to
- *	appear it's not practical - Read: It works, it's not clean but please
- *	don't consider it to be his standard of finished work.
- *		Alan.
- *
- *	All the real work was done by .....
- */
-
-/*
- * Copyright (c) 1993 Daniel Boulet
- * Copyright (c) 1994 Ugen J.S.Antsilevich
- *
- * Redistribution and use in source forms, with and without modification,
- * are permitted provided that this entire comment appears intact.
- *
- * Redistribution in binary form may occur without any restrictions.
- * Obviously, it would be nice if you gave credit where credit is due
- * but requiring it would be too onerous.
- *
- * This software is provided ``AS IS'' without any warranties of any kind.
- */
-
-/*
- * 	Format of an IP firewall descriptor
- *
- * 	src, dst, src_mask, dst_mask are always stored in network byte order.
- * 	flags and num_*_ports are stored in host byte order (of course).
- * 	Port numbers are stored in HOST byte order.
- */
- 
-#ifndef _IP_FW_H
-#define _IP_FW_H
-
-struct ip_fw 
-{
-	struct ip_fw  *fw_next;			/* Next firewall on chain */
-	struct in_addr fw_src, fw_dst;		/* Source and destination IP addr */
-	struct in_addr fw_smsk, fw_dmsk;	/* Mask for src and dest IP addr */
-	struct in_addr fw_via;			/* IP address of interface "via" */
-	unsigned short fw_flg;			/* Flags word */
-	unsigned short fw_nsp, fw_ndp;          /* N'of src ports and # of dst ports */
-						/* in ports array (dst ports follow */
-    						/* src ports; max of 10 ports in all; */
-    						/* count of 0 means match all ports) */
-#define IP_FW_MAX_PORTS	10      		/* A reasonable maximum */
-	unsigned short fw_pts[IP_FW_MAX_PORTS]; /* Array of port numbers to match */
-	unsigned long  fw_pcnt,fw_bcnt;		/* Packet and byte counters */
-};
-
-/*
- *	Values for "flags" field .
- */
-
-#define IP_FW_F_ALL	0x000	/* This is a universal packet firewall*/
-#define IP_FW_F_TCP	0x001	/* This is a TCP packet firewall      */
-#define IP_FW_F_UDP	0x002	/* This is a UDP packet firewall      */
-#define IP_FW_F_ICMP	0x003	/* This is a ICMP packet firewall     */
-#define IP_FW_F_KIND	0x003	/* Mask to isolate firewall kind      */
-#define IP_FW_F_ACCEPT	0x004	/* This is an accept firewall (as     *
-				 *         opposed to a deny firewall)*
-				 *                                    */
-#define IP_FW_F_SRNG	0x008	/* The first two src ports are a min  *
-				 * and max range (stored in host byte *
-				 * order).                            *
-				 *                                    */
-#define IP_FW_F_DRNG	0x010	/* The first two dst ports are a min  *
-				 * and max range (stored in host byte *
-				 * order).                            *
-				 * (ports[0] <= port <= ports[1])     *
-				 *                                    */
-#define IP_FW_F_PRN	0x020	/* In verbose mode print this firewall*/
-#define IP_FW_F_BIDIR	0x040	/* For bidirectional firewalls        */
-#define IP_FW_F_TCPSYN	0x080	/* For tcp packets-check SYN only     */
-#define IP_FW_F_ICMPRPL 0x100	/* Send back icmp unreachable packet  */
-#define IP_FW_F_MASK	0x1FF	/* All possible flag bits mask        */
-
-/*    
- *	New IP firewall options for [gs]etsockopt at the RAW IP level.
- *	Unlike BSD Linux inherits IP options so you don't have to use
- *	a raw socket for this. Instead we check rights in the calls.
- */     
-
-#define IP_FW_BASE_CTL   64
-
-#define IP_FW_ADD_BLK    (IP_FW_BASE_CTL)
-#define IP_FW_ADD_FWD    (IP_FW_BASE_CTL+1)   
-#define IP_FW_CHK_BLK    (IP_FW_BASE_CTL+2)
-#define IP_FW_CHK_FWD    (IP_FW_BASE_CTL+3)
-#define IP_FW_DEL_BLK    (IP_FW_BASE_CTL+4)
-#define IP_FW_DEL_FWD    (IP_FW_BASE_CTL+5)
-#define IP_FW_FLUSH_BLK  (IP_FW_BASE_CTL+6)
-#define IP_FW_FLUSH_FWD  (IP_FW_BASE_CTL+7)
-#define IP_FW_ZERO_BLK   (IP_FW_BASE_CTL+8)
-#define IP_FW_ZERO_FWD   (IP_FW_BASE_CTL+9)
-#define IP_FW_POLICY_BLK (IP_FW_BASE_CTL+10)
-#define IP_FW_POLICY_FWD (IP_FW_BASE_CTL+11)
-
-#define IP_ACCT_ADD      (IP_FW_BASE_CTL+16)
-#define IP_ACCT_DEL      (IP_FW_BASE_CTL+17)
-#define IP_ACCT_FLUSH    (IP_FW_BASE_CTL+18)
-#define IP_ACCT_ZERO     (IP_FW_BASE_CTL+19)
-
-struct ip_fwpkt
-{
-	struct iphdr fwp_iph;			/* IP header */
-	union {
-		struct tcphdr fwp_tcph;		/* TCP header or */
-		struct udphdr fwp_udph;		/* UDP header */
-	} fwp_protoh;
-	struct in_addr fwp_via;			/* interface address */
-};
-
-/*
- *	Main firewall chains definitions and global var's definitions.
- */
-
-#ifdef __KERNEL__
-
-#include <linux/config.h>
-
-#ifdef CONFIG_IP_FIREWALL
-extern struct ip_fw *ip_fw_blk_chain;
-extern struct ip_fw *ip_fw_fwd_chain;
-extern int ip_fw_blk_policy;
-extern int ip_fw_fwd_policy;
-extern int ip_fw_ctl(int, void *, int);
-#endif
-#ifdef CONFIG_IP_ACCT
-extern struct ip_fw *ip_acct_chain;
-extern void ip_acct_cnt(struct iphdr *, struct device *, struct ip_fw *);
-extern int ip_acct_ctl(int, void *, int);
-#endif
-extern int ip_fw_chk(struct iphdr *, struct device *rif,struct ip_fw *, int, int);
-#endif /* KERNEL */
-
-#endif /* _IP_FW_H */