diff options
Diffstat (limited to 'pfinet/linux-src/net/ipv4/sysctl_net_ipv4.c')
| -rw-r--r-- | pfinet/linux-src/net/ipv4/sysctl_net_ipv4.c | 205 |
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 */ |