Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 205 insertions, 0 deletions

diff --git a/pfinet/linux-src/net/ipv4/sysctl_net_ipv4.c b/pfinet/linux-src/net/ipv4/sysctl_net_ipv4.c
new file mode 100644
index 00000000..e578e4e7
--- /dev/null
+++ b/pfinet/linux-src/net/ipv4/sysctl_net_ipv4.c
@@ -0,0 +1,205 @@
+/*
+ * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem.
+ *
+ * $Id: sysctl_net_ipv4.c,v 1.38.2.1 1999/08/08 08:43:14 davem Exp $
+ *
+ * Begun April 1, 1996, Mike Shaver.
+ * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS]
+ */
+
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+#include <linux/config.h>
+#include <net/snmp.h>
+#include <net/ip.h>
+#include <net/route.h>
+#include <net/tcp.h>
+
+/*
+ *	TCP configuration parameters
+ */
+
+#define TCP_PMTU_DISC	0x00000001	/* perform PMTU discovery	  */
+#define TCP_CONG_AVOID	0x00000002	/* congestion avoidance algorithm */
+#define TCP_DELAY_ACKS	0x00000003	/* delayed ack stategy		  */
+
+#if 0
+static int boolean_min = 0;
+static int boolean_max = 1;
+#endif
+
+/* From icmp.c */
+extern int sysctl_icmp_echo_ignore_all;
+extern int sysctl_icmp_echo_ignore_broadcasts;
+extern int sysctl_icmp_ignore_bogus_error_responses;
+
+/* From ip_fragment.c */
+extern int sysctl_ipfrag_low_thresh;
+extern int sysctl_ipfrag_high_thresh; 
+extern int sysctl_ipfrag_time;
+
+/* From ip_output.c */
+extern int sysctl_ip_dynaddr;
+
+/* From ip_masq.c */
+extern int sysctl_ip_masq_debug;
+
+extern int sysctl_tcp_timestamps;
+extern int sysctl_tcp_window_scaling;
+extern int sysctl_tcp_sack;
+extern int sysctl_tcp_retrans_collapse;
+extern int sysctl_tcp_keepalive_time;
+extern int sysctl_tcp_keepalive_probes;
+extern int sysctl_tcp_max_ka_probes;
+extern int sysctl_tcp_retries1;
+extern int sysctl_tcp_retries2;
+extern int sysctl_tcp_fin_timeout;
+extern int sysctl_tcp_syncookies;
+extern int sysctl_tcp_syn_retries;
+extern int sysctl_tcp_stdurg;
+extern int sysctl_tcp_rfc1337;
+extern int sysctl_tcp_syn_taildrop; 
+extern int sysctl_max_syn_backlog; 
+
+/* From icmp.c */
+extern int sysctl_icmp_destunreach_time;
+extern int sysctl_icmp_timeexceed_time;
+extern int sysctl_icmp_paramprob_time;
+extern int sysctl_icmp_echoreply_time;
+
+/* From igmp.c */
+extern int sysctl_igmp_max_memberships;
+
+int tcp_retr1_max = 255; 
+
+struct ipv4_config ipv4_config;
+
+extern ctl_table ipv4_route_table[];
+
+#ifdef CONFIG_SYSCTL
+
+static
+int ipv4_sysctl_forward(ctl_table *ctl, int write, struct file * filp,
+			void *buffer, size_t *lenp)
+{
+	int val = ipv4_devconf.forwarding;
+	int ret;
+
+	ret = proc_dointvec(ctl, write, filp, buffer, lenp);
+
+	if (write && ipv4_devconf.forwarding != val)
+		inet_forward_change();
+
+	return ret;
+}
+
+static int ipv4_sysctl_forward_strategy(ctl_table *table, int *name, int nlen,
+			 void *oldval, size_t *oldlenp,
+			 void *newval, size_t newlen, 
+			 void **context)
+{
+	int new;
+	if (newlen != sizeof(int))
+		return -EINVAL;
+	if (get_user(new,(int *)newval))
+		return -EFAULT; 
+	if (new != ipv4_devconf.forwarding) 
+		inet_forward_change(); 
+	return 0; /* caller does change again and handles handles oldval */ 
+}
+
+ctl_table ipv4_table[] = {
+        {NET_IPV4_TCP_TIMESTAMPS, "tcp_timestamps",
+         &sysctl_tcp_timestamps, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_TCP_WINDOW_SCALING, "tcp_window_scaling",
+         &sysctl_tcp_window_scaling, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_TCP_SACK, "tcp_sack",
+         &sysctl_tcp_sack, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_TCP_RETRANS_COLLAPSE, "tcp_retrans_collapse",
+         &sysctl_tcp_retrans_collapse, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_FORWARD, "ip_forward",
+         &ipv4_devconf.forwarding, sizeof(int), 0644, NULL,
+         &ipv4_sysctl_forward,&ipv4_sysctl_forward_strategy},
+        {NET_IPV4_DEFAULT_TTL, "ip_default_ttl",
+         &ip_statistics.IpDefaultTTL, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_AUTOCONFIG, "ip_autoconfig",
+         &ipv4_config.autoconfig, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+        {NET_IPV4_NO_PMTU_DISC, "ip_no_pmtu_disc",
+         &ipv4_config.no_pmtu_disc, sizeof(int), 0644, NULL,
+         &proc_dointvec},
+	{NET_IPV4_TCP_SYN_RETRIES, "tcp_syn_retries",
+	 &sysctl_tcp_syn_retries, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_IPFRAG_HIGH_THRESH, "ipfrag_high_thresh",
+	 &sysctl_ipfrag_high_thresh, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_IPFRAG_LOW_THRESH, "ipfrag_low_thresh",
+	 &sysctl_ipfrag_low_thresh, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_DYNADDR, "ip_dynaddr",
+	 &sysctl_ip_dynaddr, sizeof(int), 0644, NULL, &proc_dointvec},
+#ifdef CONFIG_IP_MASQUERADE
+	{NET_IPV4_IP_MASQ_DEBUG, "ip_masq_debug",
+	 &sysctl_ip_masq_debug, sizeof(int), 0644, NULL, &proc_dointvec},
+#endif
+	{NET_IPV4_IPFRAG_TIME, "ipfrag_time",
+	 &sysctl_ipfrag_time, sizeof(int), 0644, NULL, &proc_dointvec_jiffies, 
+	 &sysctl_jiffies},
+	{NET_IPV4_TCP_MAX_KA_PROBES, "tcp_max_ka_probes",
+	 &sysctl_tcp_max_ka_probes, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_TCP_KEEPALIVE_TIME, "tcp_keepalive_time",
+	 &sysctl_tcp_keepalive_time, sizeof(int), 0644, NULL, 
+	 &proc_dointvec_jiffies, &sysctl_jiffies},
+	{NET_IPV4_TCP_KEEPALIVE_PROBES, "tcp_keepalive_probes",
+	 &sysctl_tcp_keepalive_probes, sizeof(int), 0644, NULL, 
+	 &proc_dointvec},
+	{NET_IPV4_TCP_RETRIES1, "tcp_retries1",
+	 &sysctl_tcp_retries1, sizeof(int), 0644, NULL, &proc_dointvec_minmax, 
+	 &sysctl_intvec, NULL, NULL, &tcp_retr1_max},
+	{NET_IPV4_TCP_RETRIES2, "tcp_retries2",
+	 &sysctl_tcp_retries2, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_TCP_FIN_TIMEOUT, "tcp_fin_timeout",
+	 &sysctl_tcp_fin_timeout, sizeof(int), 0644, NULL, 
+	 &proc_dointvec_jiffies, &sysctl_jiffies},
+#ifdef CONFIG_SYN_COOKIES
+	{NET_TCP_SYNCOOKIES, "tcp_syncookies",
+	 &sysctl_tcp_syncookies, sizeof(int), 0644, NULL, &proc_dointvec},
+#endif
+	{NET_TCP_STDURG, "tcp_stdurg", &sysctl_tcp_stdurg,
+	 sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_TCP_RFC1337, "tcp_rfc1337", &sysctl_tcp_rfc1337,
+	 sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_TCP_MAX_SYN_BACKLOG, "tcp_max_syn_backlog", &sysctl_max_syn_backlog,
+	 sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_LOCAL_PORT_RANGE, "ip_local_port_range",
+	 &sysctl_local_port_range, sizeof(sysctl_local_port_range), 0644, 
+	 NULL, &proc_dointvec},
+	{NET_IPV4_ICMP_ECHO_IGNORE_ALL, "icmp_echo_ignore_all",
+	 &sysctl_icmp_echo_ignore_all, sizeof(int), 0644, NULL,
+	 &proc_dointvec},
+	{NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, "icmp_echo_ignore_broadcasts",
+	 &sysctl_icmp_echo_ignore_broadcasts, sizeof(int), 0644, NULL,
+	 &proc_dointvec},
+	{NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, "icmp_ignore_bogus_error_responses",
+	 &sysctl_icmp_ignore_bogus_error_responses, sizeof(int), 0644, NULL,
+	 &proc_dointvec},
+	{NET_IPV4_ICMP_DESTUNREACH_RATE, "icmp_destunreach_rate",
+	 &sysctl_icmp_destunreach_time, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_ICMP_TIMEEXCEED_RATE, "icmp_timeexceed_rate",
+	 &sysctl_icmp_timeexceed_time, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_ICMP_PARAMPROB_RATE, "icmp_paramprob_rate",
+	 &sysctl_icmp_paramprob_time, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_ICMP_ECHOREPLY_RATE, "icmp_echoreply_rate",
+	 &sysctl_icmp_echoreply_time, sizeof(int), 0644, NULL, &proc_dointvec},
+	{NET_IPV4_ROUTE, "route", NULL, 0, 0555, ipv4_route_table},
+#ifdef CONFIG_IP_MULTICAST
+	{NET_IPV4_IGMP_MAX_MEMBERSHIPS, "igmp_max_memberships",
+	 &sysctl_igmp_max_memberships, sizeof(int), 0644, NULL, &proc_dointvec},
+#endif
+	{0}
+};
+
+#endif /* CONFIG_SYSCTL */