diff options
Diffstat (limited to 'recipes/linux/unslung-kernel/netconsole.patch')
| -rw-r--r-- | recipes/linux/unslung-kernel/netconsole.patch | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/recipes/linux/unslung-kernel/netconsole.patch b/recipes/linux/unslung-kernel/netconsole.patch new file mode 100644 index 0000000000..9d297300e1 --- /dev/null +++ b/recipes/linux/unslung-kernel/netconsole.patch @@ -0,0 +1,394 @@ +diff -Naur linux-2.4.22/drivers/net/Config.in.orig linux-2.4.22/drivers/net/Config.in +--- linux-2.4.22/drivers/net/Config.in.orig 2006-02-26 11:49:28.000000000 -0600 ++++ linux-2.4.22/drivers/net/Config.in 2006-02-26 11:40:31.000000000 -0600 +@@ -338,6 +338,8 @@ + dep_tristate ' SysKonnect FDDI PCI support' CONFIG_SKFP $CONFIG_PCI + fi + ++dep_tristate 'Network logging support' CONFIG_NETCONSOLE ++ + if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then + if [ "$CONFIG_INET" = "y" ]; then + bool 'HIPPI driver support (EXPERIMENTAL)' CONFIG_HIPPI +diff -Naur linux-2.4.22/drivers/net/Makefile.orig linux-2.4.22/drivers/net/Makefile +--- linux-2.4.22/drivers/net/Makefile.orig 2006-02-26 11:49:45.000000000 -0600 ++++ linux-2.4.22/drivers/net/Makefile 2006-02-26 11:38:58.000000000 -0600 +@@ -272,6 +272,8 @@ + obj-y += ../acorn/net/acorn-net.o + endif + ++obj-$(CONFIG_NETCONSOLE) += netconsole.o ++ + # + # HIPPI adapters + # +diff -Naur linux-2.4.22/drivers/net/netconsole.c.orig linux-2.4.22/drivers/net/netconsole.c +--- linux-2.4.22/drivers/net/netconsole.c.orig 2006-07-02 23:40:44.597695500 -0500 ++++ linux-2.4.22/drivers/net/netconsole.c 2006-07-10 15:58:44.000000000 -0500 +@@ -0,0 +1,353 @@ ++/* linux/drivers/net/netconsole.c ++ * ++ * Copyright (C) 2001 Ingo Molnar <mingo@redhat.com> ++ * ++ * This file contains the implementation of an IRQ-safe, crash-safe ++ * kernel console implementation that outputs kernel messages to the ++ * network. ++ * ++ * Modification history: ++ * ++ * 2001-09-17 started by Ingo Molnar. ++ * 2006-02-26 very minor modifications to suit the NSLU2 w/Unslung -- Mike Westerhof. ++ * 2006-07-10 usability mods for Unslung (text only, and IP addrs) -- Mike Westerhof. ++ */ ++ ++/**************************************************************** ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2, or (at your option) ++ * any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ * ++ ****************************************************************/ ++ ++#include <net/tcp.h> ++#include <net/udp.h> ++#include <linux/mm.h> ++#include <linux/tty.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <asm/unaligned.h> ++#include <linux/console.h> ++#include <linux/smp_lock.h> ++#include <linux/netdevice.h> ++#include <linux/tty_driver.h> ++#include <linux/etherdevice.h> ++ ++static struct net_device *netconsole_dev; ++static u16 source_port, target_port; ++static u32 source_ip, target_ip, target_ipaddr; ++static unsigned char daddr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff} ; ++ ++#define NETCONSOLE_VERSION 0x01 ++/* HEADER_LEN was "5" -- it's zero for Unslung; makes it work better with netcat */ ++#define HEADER_LEN 0 ++ ++#define MAX_UDP_CHUNK 1460 ++#define MAX_PRINT_CHUNK (MAX_UDP_CHUNK-HEADER_LEN) ++ ++/* ++ * We maintain a small pool of fully-sized skbs, ++ * to make sure the message gets out even in ++ * extreme OOM situations. ++ */ ++/* Was 32, lowered to 16 for Unslung (to save memory) */ ++#define MAX_NETCONSOLE_SKBS 16 ++ ++ ++static spinlock_t netconsole_lock = SPIN_LOCK_UNLOCKED; ++static int nr_netconsole_skbs; ++static struct sk_buff *netconsole_skbs; ++ ++#define MAX_SKB_SIZE \ ++ (MAX_UDP_CHUNK + sizeof(struct udphdr) + \ ++ sizeof(struct iphdr) + sizeof(struct ethhdr)) ++ ++static void __refill_netconsole_skbs(void) ++{ ++ struct sk_buff *skb; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&netconsole_lock, flags); ++ while (nr_netconsole_skbs < MAX_NETCONSOLE_SKBS) { ++ skb = alloc_skb(MAX_SKB_SIZE, GFP_ATOMIC); ++ if (!skb) ++ break; ++ if (netconsole_skbs) ++ skb->next = netconsole_skbs; ++ else ++ skb->next = NULL; ++ netconsole_skbs = skb; ++ nr_netconsole_skbs++; ++ } ++ spin_unlock_irqrestore(&netconsole_lock, flags); ++} ++ ++static struct sk_buff * get_netconsole_skb(void) ++{ ++ struct sk_buff *skb; ++ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&netconsole_lock, flags); ++ skb = netconsole_skbs; ++ if (skb) ++ netconsole_skbs = skb->next; ++ skb->next = NULL; ++ nr_netconsole_skbs--; ++ spin_unlock_irqrestore(&netconsole_lock, flags); ++ ++ return skb; ++} ++ ++static spinlock_t sequence_lock = SPIN_LOCK_UNLOCKED; ++static unsigned int offset; ++ ++static void send_netconsole_skb(struct net_device *dev, const char *msg, unsigned int msg_len) ++{ ++ int total_len, eth_len, ip_len, udp_len; ++ unsigned long flags; ++ struct sk_buff *skb; ++ struct udphdr *udph; ++ struct iphdr *iph; ++ struct ethhdr *eth; ++ ++ udp_len = msg_len + HEADER_LEN + sizeof(*udph); ++ ip_len = eth_len = udp_len + sizeof(*iph); ++ total_len = eth_len + ETH_HLEN; ++ ++ if (nr_netconsole_skbs < MAX_NETCONSOLE_SKBS) ++ __refill_netconsole_skbs(); ++ ++ skb = alloc_skb(total_len, GFP_ATOMIC); ++ if (!skb) { ++ skb = get_netconsole_skb(); ++ if (!skb) ++ /* tough! */ ++ return; ++ } ++ ++ atomic_set(&skb->users, 1); ++ skb_reserve(skb, total_len - msg_len - HEADER_LEN); ++/* Header data removed for Unslung -- its presence makes netcat less useful ++ * skb->data[0] = NETCONSOLE_VERSION; ++ * ++ * spin_lock_irqsave(&sequence_lock, flags); ++ * put_unaligned(htonl(offset), (u32 *) (skb->data + 1)); ++ * offset += msg_len; ++ * spin_unlock_irqrestore(&sequence_lock, flags); ++ */ ++ memcpy(skb->data + HEADER_LEN, msg, msg_len); ++ skb->len += msg_len + HEADER_LEN; ++ ++ udph = (struct udphdr *) skb_push(skb, sizeof(*udph)); ++ udph->source = source_port; ++ udph->dest = target_port; ++ udph->len = htons(udp_len); ++ udph->check = 0; ++ ++ iph = (struct iphdr *)skb_push(skb, sizeof(*iph)); ++ ++ iph->version = 4; ++ iph->ihl = 5; ++ iph->tos = 0; ++ iph->tot_len = htons(ip_len); ++ iph->id = 0; ++ iph->frag_off = 0; ++ iph->ttl = 64; ++ iph->protocol = IPPROTO_UDP; ++ iph->check = 0; ++ iph->saddr = source_ip; ++ iph->daddr = target_ip; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++ ++ eth = (struct ethhdr *) skb_push(skb, ETH_HLEN); ++ ++ eth->h_proto = htons(ETH_P_IP); ++ memcpy(eth->h_source, dev->dev_addr, dev->addr_len); ++ memcpy(eth->h_dest, daddr, dev->addr_len); ++ ++repeat: ++ spin_lock(&dev->xmit_lock); ++ dev->xmit_lock_owner = smp_processor_id(); ++ ++ if (netif_queue_stopped(dev)) { ++ dev->xmit_lock_owner = -1; ++ spin_unlock(&dev->xmit_lock); ++ ++ dev->poll_controller(dev); ++ goto repeat; ++ } ++ ++ dev->hard_start_xmit(skb, dev); ++ ++ dev->xmit_lock_owner = -1; ++ spin_unlock(&dev->xmit_lock); ++} ++ ++static void write_netconsole_msg(struct console *con, const char *msg, unsigned int msg_len) ++{ ++ int len, left; ++ struct net_device *dev; ++ ++ dev = netconsole_dev; ++ if (!dev) ++ return; ++ ++ if (dev->poll_controller && netif_running(dev)) { ++ unsigned long flags; ++ ++ __save_flags(flags); ++ __cli(); ++ left = msg_len; ++repeat: ++ if (left > MAX_PRINT_CHUNK) ++ len = MAX_PRINT_CHUNK; ++ else ++ len = left; ++ send_netconsole_skb(dev, msg, len); ++ msg += len; ++ left -= len; ++ if (left) ++ goto repeat; ++ __restore_flags(flags); ++ } ++} ++ ++static char *dev; ++static int target_eth_byte0 = 255; ++static int target_eth_byte1 = 255; ++static int target_eth_byte2 = 255; ++static int target_eth_byte3 = 255; ++static int target_eth_byte4 = 255; ++static int target_eth_byte5 = 255; ++ ++MODULE_AUTHOR("Ingo Molnar <mingo@redhat.com>"); ++MODULE_DESCRIPTION("kernel network console implementation"); ++MODULE_LICENSE("GPL"); ++MODULE_PARM(target_ip, "i"); ++MODULE_PARM(target_ipaddr, "s"); ++MODULE_PARM(target_eth_byte0, "i"); ++MODULE_PARM(target_eth_byte1, "i"); ++MODULE_PARM(target_eth_byte2, "i"); ++MODULE_PARM(target_eth_byte3, "i"); ++MODULE_PARM(target_eth_byte4, "i"); ++MODULE_PARM(target_eth_byte5, "i"); ++MODULE_PARM(source_port, "h"); ++MODULE_PARM(target_port, "h"); ++MODULE_PARM(dev, "s"); ++ ++static struct console netconsole = ++ { flags: CON_ENABLED, write: write_netconsole_msg }; ++ ++static int init_netconsole(void) ++{ ++ struct net_device *ndev = NULL; ++ struct in_device *in_dev; ++ ++ // Set some reasonable defaults, at least for the NSLU2 device ++ if (!target_port) ++ target_port = 6666; ++ if (!source_port) ++ source_port = 6665; ++ if (!dev) ++ dev = "ixp0"; ++ ++ printk(KERN_INFO "netconsole: using network device <%s>\n", dev); ++ // this will be valid once the device goes up. ++ if (dev) ++ ndev = dev_get_by_name(dev); ++ if (!ndev) { ++ printk(KERN_ERR "netconsole: network device %s does not exist, aborting.\n", dev); ++ return -1; ++ } ++ if (!ndev->poll_controller) { ++ printk(KERN_ERR "netconsole: %s's network driver does not implement netlogging yet, aborting.\n", dev); ++ return -1; ++ } ++ in_dev = in_dev_get(ndev); ++ if (!in_dev) { ++ printk(KERN_ERR "netconsole: network device %s is not an IP protocol device, aborting.\n", dev); ++ return -1; ++ } ++ source_ip = ntohl(in_dev->ifa_list->ifa_local); ++ if (!source_ip) { ++ printk(KERN_ERR "netconsole: network device %s has no local address, aborting.\n", dev); ++ return -1; ++ } ++ source_ip = htonl(source_ip); ++#define IP(x) ((char *)&source_ip)[x] ++ printk(KERN_INFO "netconsole: using source IP %i.%i.%i.%i\n", ++ IP(0), IP(1), IP(2), IP(3)); ++#undef IP ++ if (!target_ipaddr) { ++ if (!target_ip) { ++ printk(KERN_ERR "netconsole: neither target_ipaddr nor target_ip parameter not specified, aborting.\n"); ++ return -1; ++ } else { ++ target_ip = htonl(target_ip); ++ } ++ } else { ++ target_ip = in_aton(target_ipaddr); ++ } ++#define IP(x) ((char *)&target_ip)[x] ++ printk(KERN_INFO "netconsole: using target IP %i.%i.%i.%i\n", ++ IP(0), IP(1), IP(2), IP(3)); ++#undef IP ++ if (!source_port) { ++ printk(KERN_ERR "netconsole: source_port parameter not specified, aborting.\n"); ++ return -1; ++ } ++ printk(KERN_INFO "netconsole: using source UDP port: %i\n", source_port); ++ source_port = htons(source_port); ++ if (!target_port) { ++ printk(KERN_ERR "netconsole: target_port parameter not specified, aborting.\n"); ++ return -1; ++ } ++ printk(KERN_INFO "netconsole: using target UDP port: %i\n", target_port); ++ target_port = htons(target_port); ++ ++ daddr[0] = target_eth_byte0; ++ daddr[1] = target_eth_byte1; ++ daddr[2] = target_eth_byte2; ++ daddr[3] = target_eth_byte3; ++ daddr[4] = target_eth_byte4; ++ daddr[5] = target_eth_byte5; ++ ++ if ((daddr[0] & daddr[1] & daddr[2] & daddr[3] & daddr[4] & daddr[5]) == 255) ++ printk(KERN_INFO "netconsole: using broadcast ethernet frames to send packets.\n"); ++ else ++ printk(KERN_INFO "netconsole: using target ethernet address %02x:%02x:%02x:%02x:%02x:%02x.\n", daddr[0], daddr[1], daddr[2], daddr[3], daddr[4], daddr[5]); ++ ++ netconsole_dev = ndev; ++#define STARTUP_MSG "[...network console startup...]\n" ++ write_netconsole_msg(NULL, STARTUP_MSG, strlen(STARTUP_MSG)); ++ ++ register_console(&netconsole); ++ printk(KERN_INFO "netconsole: network logging started up successfully!\n"); ++ return 0; ++} ++ ++static void cleanup_netconsole(void) ++{ ++ printk(KERN_INFO "netconsole: network logging shut down.\n"); ++ unregister_console(&netconsole); ++ ++#define SHUTDOWN_MSG "[...network console shutdown...]\n" ++ write_netconsole_msg(NULL, SHUTDOWN_MSG, strlen(SHUTDOWN_MSG)); ++ netconsole_dev = NULL; ++} ++ ++module_init(init_netconsole); ++module_exit(cleanup_netconsole); ++ ++int dummy = MAX_SKB_SIZE; +diff -Naur linux-2.4.22/include/linux/netdevice.h.orig linux-2.4.22/include/linux/netdevice.h +--- linux-2.4.22/include/linux/netdevice.h.orig 2006-02-26 11:50:24.000000000 -0600 ++++ linux-2.4.22/include/linux/netdevice.h 2006-02-26 11:37:14.000000000 -0600 +@@ -428,6 +428,9 @@ + int (*neigh_setup)(struct net_device *dev, struct neigh_parms *); + int (*accept_fastpath)(struct net_device *, struct dst_entry*); + ++#define HAVE_POLL_CONTROLLER ++ void (*poll_controller)(struct net_device *dev); ++ + /* open/release and usage marking */ + struct module *owner; + |