![Tim Schmielau](/assets/img/avatar_default.png)
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
211 lines
5.1 KiB
C
211 lines
5.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
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* Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
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*/
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/spinlock.h>
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#include <linux/net.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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void ax25_ds_nr_error_recovery(ax25_cb *ax25)
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{
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ax25_ds_establish_data_link(ax25);
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}
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/*
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* dl1bke 960114: transmit I frames on DAMA poll
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*/
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void ax25_ds_enquiry_response(ax25_cb *ax25)
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{
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ax25_cb *ax25o;
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struct hlist_node *node;
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/* Please note that neither DK4EG´s nor DG2FEF´s
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* DAMA spec mention the following behaviour as seen
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* with TheFirmware:
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*
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* DB0ACH->DL1BKE <RR C P R0> [DAMA]
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* DL1BKE->DB0ACH <I NR=0 NS=0>
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* DL1BKE-7->DB0PRA-6 DB0ACH <I C S3 R5>
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* DL1BKE->DB0ACH <RR R F R0>
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*
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* The Flexnet DAMA Master implementation apparently
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* insists on the "proper" AX.25 behaviour:
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*
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* DB0ACH->DL1BKE <RR C P R0> [DAMA]
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* DL1BKE->DB0ACH <RR R F R0>
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* DL1BKE->DB0ACH <I NR=0 NS=0>
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* DL1BKE-7->DB0PRA-6 DB0ACH <I C S3 R5>
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*
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* Flexnet refuses to send us *any* I frame if we send
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* a REJ in case AX25_COND_REJECT is set. It is superfluous in
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* this mode anyway (a RR or RNR invokes the retransmission).
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* Is this a Flexnet bug?
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*/
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ax25_std_enquiry_response(ax25);
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if (!(ax25->condition & AX25_COND_PEER_RX_BUSY)) {
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ax25_requeue_frames(ax25);
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ax25_kick(ax25);
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}
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if (ax25->state == AX25_STATE_1 || ax25->state == AX25_STATE_2 || skb_peek(&ax25->ack_queue) != NULL)
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ax25_ds_t1_timeout(ax25);
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else
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ax25->n2count = 0;
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ax25_start_t3timer(ax25);
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ax25_ds_set_timer(ax25->ax25_dev);
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spin_lock(&ax25_list_lock);
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ax25_for_each(ax25o, node, &ax25_list) {
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if (ax25o == ax25)
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continue;
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if (ax25o->ax25_dev != ax25->ax25_dev)
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continue;
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if (ax25o->state == AX25_STATE_1 || ax25o->state == AX25_STATE_2) {
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ax25_ds_t1_timeout(ax25o);
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continue;
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}
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if (!(ax25o->condition & AX25_COND_PEER_RX_BUSY) && ax25o->state == AX25_STATE_3) {
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ax25_requeue_frames(ax25o);
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ax25_kick(ax25o);
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}
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if (ax25o->state == AX25_STATE_1 || ax25o->state == AX25_STATE_2 || skb_peek(&ax25o->ack_queue) != NULL)
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ax25_ds_t1_timeout(ax25o);
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/* do not start T3 for listening sockets (tnx DD8NE) */
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if (ax25o->state != AX25_STATE_0)
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ax25_start_t3timer(ax25o);
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}
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spin_unlock(&ax25_list_lock);
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}
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void ax25_ds_establish_data_link(ax25_cb *ax25)
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{
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ax25->condition &= AX25_COND_DAMA_MODE;
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ax25->n2count = 0;
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ax25_calculate_t1(ax25);
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ax25_start_t1timer(ax25);
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ax25_stop_t2timer(ax25);
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ax25_start_t3timer(ax25);
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}
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/*
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* :::FIXME:::
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* This is a kludge. Not all drivers recognize kiss commands.
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* We need a driver level request to switch duplex mode, that does
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* either SCC changing, PI config or KISS as required. Currently
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* this request isn't reliable.
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*/
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static void ax25_kiss_cmd(ax25_dev *ax25_dev, unsigned char cmd, unsigned char param)
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{
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struct sk_buff *skb;
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unsigned char *p;
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if (ax25_dev->dev == NULL)
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return;
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if ((skb = alloc_skb(2, GFP_ATOMIC)) == NULL)
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return;
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skb->nh.raw = skb->data;
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p = skb_put(skb, 2);
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*p++ = cmd;
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*p++ = param;
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skb->protocol = ax25_type_trans(skb, ax25_dev->dev);
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dev_queue_xmit(skb);
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}
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/*
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* A nasty problem arises if we count the number of DAMA connections
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* wrong, especially when connections on the device already existed
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* and our network node (or the sysop) decides to turn on DAMA Master
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* mode. We thus flag the 'real' slave connections with
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* ax25->dama_slave=1 and look on every disconnect if still slave
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* connections exist.
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*/
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static int ax25_check_dama_slave(ax25_dev *ax25_dev)
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{
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ax25_cb *ax25;
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int res = 0;
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struct hlist_node *node;
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spin_lock(&ax25_list_lock);
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ax25_for_each(ax25, node, &ax25_list)
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if (ax25->ax25_dev == ax25_dev && (ax25->condition & AX25_COND_DAMA_MODE) && ax25->state > AX25_STATE_1) {
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res = 1;
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break;
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}
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spin_unlock(&ax25_list_lock);
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return res;
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}
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static void ax25_dev_dama_on(ax25_dev *ax25_dev)
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{
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if (ax25_dev == NULL)
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return;
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if (ax25_dev->dama.slave == 0)
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ax25_kiss_cmd(ax25_dev, 5, 1);
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ax25_dev->dama.slave = 1;
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ax25_ds_set_timer(ax25_dev);
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}
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void ax25_dev_dama_off(ax25_dev *ax25_dev)
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{
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if (ax25_dev == NULL)
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return;
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if (ax25_dev->dama.slave && !ax25_check_dama_slave(ax25_dev)) {
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ax25_kiss_cmd(ax25_dev, 5, 0);
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ax25_dev->dama.slave = 0;
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ax25_ds_del_timer(ax25_dev);
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}
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}
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void ax25_dama_on(ax25_cb *ax25)
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{
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ax25_dev_dama_on(ax25->ax25_dev);
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ax25->condition |= AX25_COND_DAMA_MODE;
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}
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void ax25_dama_off(ax25_cb *ax25)
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{
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ax25->condition &= ~AX25_COND_DAMA_MODE;
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ax25_dev_dama_off(ax25->ax25_dev);
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}
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