Commit bcb83935 authored by David Johnson's avatar David Johnson

Bump ipod linux patch up to ~ 2.6.40 era kernels.

parent 9d61684c
--- linux-2.6.39.i686/net/ipv4/Kconfig.orig 2011-05-18 22:06:34.000000000 -0600
+++ linux-2.6.39.i686/net/ipv4/Kconfig 2011-08-12 15:55:10.000000000 -0600
@@ -624,3 +624,9 @@
on the Internet.
If unsure, say N.
+
+#
+# Emulab special
+#
+config ICMP_PINGOFDEATH
+ bool "ICMP: ICMP Ping-of-Death (Emulab)"
--- linux-2.6.39.i686/net/ipv4/icmp.c.orig 2011-08-12 15:35:55.000000000 -0600
+++ linux-2.6.39.i686/net/ipv4/icmp.c 2011-08-12 16:03:20.000000000 -0600
@@ -950,6 +950,67 @@
}
}
+#ifdef CONFIG_ICMP_PINGOFDEATH
+#include <linux/reboot.h>
+
+int sysctl_ipod_version = 2;
+int sysctl_ipod_enabled = 0;
+u32 sysctl_ipod_host = 0xffffffff;
+u32 sysctl_ipod_mask = 0xffffffff;
+char sysctl_ipod_key[32+1] = { "SETMETOSOMETHINGTHIRTYTWOBYTES!!" };
+#define IPOD_CHECK_KEY \
+ (sysctl_ipod_key[0] != 0)
+#define IPOD_VALID_KEY(d) \
+ (strncmp(sysctl_ipod_key, (char *)(d), strlen(sysctl_ipod_key)) == 0)
+
+static void icmp_ping_of_death(struct sk_buff *skb)
+{
+ struct icmphdr *icmph = icmp_hdr(skb);
+ struct iphdr *iph = ip_hdr(skb);
+ int doit = 0;
+
+#if 0
+ printk(KERN_INFO "IPOD: got type=6, code=%d, host=%pI4\n", icmph->code, ntohs(iph->tot_len), &iph->saddr);
+#endif
+
+ /*
+ * If IPOD not enabled or wrong ICMP code, ignore.
+ */
+ if (!sysctl_ipod_enabled || icmph->code != 6)
+ return;
+
+ /*
+ * First check the source address info.
+ * If host not set, ignore.
+ */
+ if (sysctl_ipod_host != 0xffffffff &&
+ (ntohl(iph->saddr) & sysctl_ipod_mask) == sysctl_ipod_host) {
+ /*
+ * Now check the key if enabled.
+ * If packet doesn't contain enough data or key
+ * is otherwise invalid, ignore.
+ */
+ if (IPOD_CHECK_KEY) {
+ if (pskb_may_pull(skb, sizeof(sysctl_ipod_key)-1) &&
+ IPOD_VALID_KEY(skb->data))
+ doit = 1;
+ } else {
+ doit = 1;
+ }
+ }
+
+ if (doit) {
+ sysctl_ipod_enabled = 0;
+ printk(KERN_CRIT "IPOD: reboot forced by %pI4...\n",
+ &iph->saddr);
+ machine_restart(NULL);
+ } else {
+ printk(KERN_WARNING "IPOD: from %pI4 rejected\n",
+ &iph->saddr);
+ }
+}
+#endif
+
static void icmp_discard(struct sk_buff *skb)
{
}
@@ -1073,10 +1134,18 @@
.handler = icmp_redirect,
.error = 1,
},
+#ifdef CONFIG_ICMP_PINGOFDEATH
+ /* PING_OF_DEATH (6) */
+ [6] = {
+ .handler = icmp_ping_of_death,
+ .error = 1,
+ },
+#else
[6] = {
.handler = icmp_discard,
.error = 1,
},
+#endif
[7] = {
.handler = icmp_discard,
.error = 1,
--- linux-2.6.39.i686/net/ipv4/sysctl_net_ipv4.c.orig 2011-08-12 15:35:55.000000000 -0600
+++ linux-2.6.39.i686/net/ipv4/sysctl_net_ipv4.c 2011-08-12 16:24:06.000000000 -0600
@@ -24,6 +24,14 @@
#include <net/inet_frag.h>
#include <net/ping.h>
+#ifdef CONFIG_ICMP_PINGOFDEATH
+extern int sysctl_ipod_version;
+extern int sysctl_ipod_enabled;
+extern u32 sysctl_ipod_host;
+extern u32 sysctl_ipod_mask;
+extern char sysctl_ipod_key[32+1];
+#endif
+
static int zero;
static int tcp_retr1_max = 255;
static int ip_local_port_range_min[] = { 1, 1 };
@@ -675,6 +683,43 @@
.proc_handler = proc_dointvec_minmax,
.extra1 = &zero
},
+#ifdef CONFIG_ICMP_PINGOFDEATH
+ {
+ .procname = "icmp_ipod_version",
+ .data = &sysctl_ipod_version,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .procname = "icmp_ipod_enabled",
+ .data = &sysctl_ipod_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .procname = "icmp_ipod_host",
+ .data = &sysctl_ipod_host,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .procname = "icmp_ipod_mask",
+ .data = &sysctl_ipod_mask,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .procname = "icmp_ipod_key",
+ .data = sysctl_ipod_key,
+ .maxlen = sizeof(sysctl_ipod_key),
+ .mode = 0600,
+ .proc_handler = &proc_dostring,
+ },
+#endif
{ }
};
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