diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/ipv4/sysctl_net_ipv4.c | |
download | linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
-rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c new file mode 100644 index 00000000000..3aafb298c1c --- /dev/null +++ b/net/ipv4/sysctl_net_ipv4.c @@ -0,0 +1,698 @@ +/* + * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem. + * + * $Id: sysctl_net_ipv4.c,v 1.50 2001/10/20 00:00:11 davem Exp $ + * + * Begun April 1, 1996, Mike Shaver. + * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS] + */ + +#include <linux/mm.h> +#include <linux/module.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> + +/* From af_inet.c */ +extern int sysctl_ip_nonlocal_bind; + +/* 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; +extern int sysctl_ipfrag_secret_interval; + +/* From ip_output.c */ +extern int sysctl_ip_dynaddr; + +/* From icmp.c */ +extern int sysctl_icmp_ratelimit; +extern int sysctl_icmp_ratemask; + +/* From igmp.c */ +extern int sysctl_igmp_max_memberships; +extern int sysctl_igmp_max_msf; + +/* From inetpeer.c */ +extern int inet_peer_threshold; +extern int inet_peer_minttl; +extern int inet_peer_maxttl; +extern int inet_peer_gc_mintime; +extern int inet_peer_gc_maxtime; + +#ifdef CONFIG_SYSCTL +static int tcp_retr1_max = 255; +static int ip_local_port_range_min[] = { 1, 1 }; +static int ip_local_port_range_max[] = { 65535, 65535 }; +#endif + +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 __user *buffer, size_t *lenp, loff_t *ppos) +{ + int val = ipv4_devconf.forwarding; + int ret; + + ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); + + if (write && ipv4_devconf.forwarding != val) + inet_forward_change(); + + return ret; +} + +static int ipv4_sysctl_forward_strategy(ctl_table *table, + int __user *name, int nlen, + void __user *oldval, size_t __user *oldlenp, + void __user *newval, size_t newlen, + void **context) +{ + int *valp = table->data; + int new; + + if (!newval || !newlen) + return 0; + + if (newlen != sizeof(int)) + return -EINVAL; + + if (get_user(new, (int __user *)newval)) + return -EFAULT; + + if (new == *valp) + return 0; + + if (oldval && oldlenp) { + size_t len; + + if (get_user(len, oldlenp)) + return -EFAULT; + + if (len) { + if (len > table->maxlen) + len = table->maxlen; + if (copy_to_user(oldval, valp, len)) + return -EFAULT; + if (put_user(len, oldlenp)) + return -EFAULT; + } + } + + *valp = new; + inet_forward_change(); + return 1; +} + +ctl_table ipv4_table[] = { + { + .ctl_name = NET_IPV4_TCP_TIMESTAMPS, + .procname = "tcp_timestamps", + .data = &sysctl_tcp_timestamps, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_WINDOW_SCALING, + .procname = "tcp_window_scaling", + .data = &sysctl_tcp_window_scaling, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_SACK, + .procname = "tcp_sack", + .data = &sysctl_tcp_sack, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE, + .procname = "tcp_retrans_collapse", + .data = &sysctl_tcp_retrans_collapse, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_FORWARD, + .procname = "ip_forward", + .data = &ipv4_devconf.forwarding, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &ipv4_sysctl_forward, + .strategy = &ipv4_sysctl_forward_strategy + }, + { + .ctl_name = NET_IPV4_DEFAULT_TTL, + .procname = "ip_default_ttl", + .data = &sysctl_ip_default_ttl, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &ipv4_doint_and_flush, + .strategy = &ipv4_doint_and_flush_strategy, + }, + { + .ctl_name = NET_IPV4_AUTOCONFIG, + .procname = "ip_autoconfig", + .data = &ipv4_config.autoconfig, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_NO_PMTU_DISC, + .procname = "ip_no_pmtu_disc", + .data = &ipv4_config.no_pmtu_disc, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_NONLOCAL_BIND, + .procname = "ip_nonlocal_bind", + .data = &sysctl_ip_nonlocal_bind, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_SYN_RETRIES, + .procname = "tcp_syn_retries", + .data = &sysctl_tcp_syn_retries, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_SYNACK_RETRIES, + .procname = "tcp_synack_retries", + .data = &sysctl_tcp_synack_retries, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_MAX_ORPHANS, + .procname = "tcp_max_orphans", + .data = &sysctl_tcp_max_orphans, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_MAX_TW_BUCKETS, + .procname = "tcp_max_tw_buckets", + .data = &sysctl_tcp_max_tw_buckets, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH, + .procname = "ipfrag_high_thresh", + .data = &sysctl_ipfrag_high_thresh, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_IPFRAG_LOW_THRESH, + .procname = "ipfrag_low_thresh", + .data = &sysctl_ipfrag_low_thresh, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_DYNADDR, + .procname = "ip_dynaddr", + .data = &sysctl_ip_dynaddr, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_IPFRAG_TIME, + .procname = "ipfrag_time", + .data = &sysctl_ipfrag_time, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME, + .procname = "tcp_keepalive_time", + .data = &sysctl_tcp_keepalive_time, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES, + .procname = "tcp_keepalive_probes", + .data = &sysctl_tcp_keepalive_probes, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL, + .procname = "tcp_keepalive_intvl", + .data = &sysctl_tcp_keepalive_intvl, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_TCP_RETRIES1, + .procname = "tcp_retries1", + .data = &sysctl_tcp_retries1, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra2 = &tcp_retr1_max + }, + { + .ctl_name = NET_IPV4_TCP_RETRIES2, + .procname = "tcp_retries2", + .data = &sysctl_tcp_retries2, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT, + .procname = "tcp_fin_timeout", + .data = &sysctl_tcp_fin_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, +#ifdef CONFIG_SYN_COOKIES + { + .ctl_name = NET_TCP_SYNCOOKIES, + .procname = "tcp_syncookies", + .data = &sysctl_tcp_syncookies, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, +#endif + { + .ctl_name = NET_TCP_TW_RECYCLE, + .procname = "tcp_tw_recycle", + .data = &sysctl_tcp_tw_recycle, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_ABORT_ON_OVERFLOW, + .procname = "tcp_abort_on_overflow", + .data = &sysctl_tcp_abort_on_overflow, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_STDURG, + .procname = "tcp_stdurg", + .data = &sysctl_tcp_stdurg, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_RFC1337, + .procname = "tcp_rfc1337", + .data = &sysctl_tcp_rfc1337, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_MAX_SYN_BACKLOG, + .procname = "tcp_max_syn_backlog", + .data = &sysctl_max_syn_backlog, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_LOCAL_PORT_RANGE, + .procname = "ip_local_port_range", + .data = &sysctl_local_port_range, + .maxlen = sizeof(sysctl_local_port_range), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = ip_local_port_range_min, + .extra2 = ip_local_port_range_max + }, + { + .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL, + .procname = "icmp_echo_ignore_all", + .data = &sysctl_icmp_echo_ignore_all, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, + .procname = "icmp_echo_ignore_broadcasts", + .data = &sysctl_icmp_echo_ignore_broadcasts, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, + .procname = "icmp_ignore_bogus_error_responses", + .data = &sysctl_icmp_ignore_bogus_error_responses, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_ROUTE, + .procname = "route", + .maxlen = 0, + .mode = 0555, + .child = ipv4_route_table + }, +#ifdef CONFIG_IP_MULTICAST + { + .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS, + .procname = "igmp_max_memberships", + .data = &sysctl_igmp_max_memberships, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + +#endif + { + .ctl_name = NET_IPV4_IGMP_MAX_MSF, + .procname = "igmp_max_msf", + .data = &sysctl_igmp_max_msf, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_INET_PEER_THRESHOLD, + .procname = "inet_peer_threshold", + .data = &inet_peer_threshold, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_INET_PEER_MINTTL, + .procname = "inet_peer_minttl", + .data = &inet_peer_minttl, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_INET_PEER_MAXTTL, + .procname = "inet_peer_maxttl", + .data = &inet_peer_maxttl, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME, + .procname = "inet_peer_gc_mintime", + .data = &inet_peer_gc_mintime, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME, + .procname = "inet_peer_gc_maxtime", + .data = &inet_peer_gc_maxtime, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_TCP_ORPHAN_RETRIES, + .procname = "tcp_orphan_retries", + .data = &sysctl_tcp_orphan_retries, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_FACK, + .procname = "tcp_fack", + .data = &sysctl_tcp_fack, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_REORDERING, + .procname = "tcp_reordering", + .data = &sysctl_tcp_reordering, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_ECN, + .procname = "tcp_ecn", + .data = &sysctl_tcp_ecn, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_DSACK, + .procname = "tcp_dsack", + .data = &sysctl_tcp_dsack, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_MEM, + .procname = "tcp_mem", + .data = &sysctl_tcp_mem, + .maxlen = sizeof(sysctl_tcp_mem), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_WMEM, + .procname = "tcp_wmem", + .data = &sysctl_tcp_wmem, + .maxlen = sizeof(sysctl_tcp_wmem), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_RMEM, + .procname = "tcp_rmem", + .data = &sysctl_tcp_rmem, + .maxlen = sizeof(sysctl_tcp_rmem), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_APP_WIN, + .procname = "tcp_app_win", + .data = &sysctl_tcp_app_win, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_ADV_WIN_SCALE, + .procname = "tcp_adv_win_scale", + .data = &sysctl_tcp_adv_win_scale, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_ICMP_RATELIMIT, + .procname = "icmp_ratelimit", + .data = &sysctl_icmp_ratelimit, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_ICMP_RATEMASK, + .procname = "icmp_ratemask", + .data = &sysctl_icmp_ratemask, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_TW_REUSE, + .procname = "tcp_tw_reuse", + .data = &sysctl_tcp_tw_reuse, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_FRTO, + .procname = "tcp_frto", + .data = &sysctl_tcp_frto, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_TCP_LOW_LATENCY, + .procname = "tcp_low_latency", + .data = &sysctl_tcp_low_latency, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL, + .procname = "ipfrag_secret_interval", + .data = &sysctl_ipfrag_secret_interval, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_jiffies, + .strategy = &sysctl_jiffies + }, + { + .ctl_name = NET_TCP_NO_METRICS_SAVE, + .procname = "tcp_no_metrics_save", + .data = &sysctl_tcp_nometrics_save, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_WESTWOOD, + .procname = "tcp_westwood", + .data = &sysctl_tcp_westwood, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_VEGAS, + .procname = "tcp_vegas_cong_avoid", + .data = &sysctl_tcp_vegas_cong_avoid, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_VEGAS_ALPHA, + .procname = "tcp_vegas_alpha", + .data = &sysctl_tcp_vegas_alpha, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_VEGAS_BETA, + .procname = "tcp_vegas_beta", + .data = &sysctl_tcp_vegas_beta, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_VEGAS_GAMMA, + .procname = "tcp_vegas_gamma", + .data = &sysctl_tcp_vegas_gamma, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_BIC, + .procname = "tcp_bic", + .data = &sysctl_tcp_bic, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_BIC_FAST_CONVERGENCE, + .procname = "tcp_bic_fast_convergence", + .data = &sysctl_tcp_bic_fast_convergence, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_BIC_LOW_WINDOW, + .procname = "tcp_bic_low_window", + .data = &sysctl_tcp_bic_low_window, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_MODERATE_RCVBUF, + .procname = "tcp_moderate_rcvbuf", + .data = &sysctl_tcp_moderate_rcvbuf, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_TSO_WIN_DIVISOR, + .procname = "tcp_tso_win_divisor", + .data = &sysctl_tcp_tso_win_divisor, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = NET_TCP_BIC_BETA, + .procname = "tcp_bic_beta", + .data = &sysctl_tcp_bic_beta, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { .ctl_name = 0 } +}; + +#endif /* CONFIG_SYSCTL */ + +EXPORT_SYMBOL(ipv4_config); |