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remarkable-linux/net/ipv4/sysctl_net_ipv4.c
Anton Arapov a25de534f8 [INET]: Justification for local port range robustness. 
There is a justifying patch for Stephen's patches. Stephen's patches
disallows using a port range of one single port and brakes the meaning
of the 'remaining' variable, in some places it has different meaning.
My patch gives back the sense of 'remaining' variable. It should mean
how many ports are remaining and nothing else. Also my patch allows
using a single port.

  I sure we must be able to use mentioned port range, this does not
restricted by documentation and does not brake current behavior.

usefull links:
Patches posted by Stephen Hemminger
  http://marc.info/?l=linux-netdev&m=119206106218187&w=2
  http://marc.info/?l=linux-netdev&m=119206109918235&w=2

Andrew Morton's comment
  http://marc.info/?l=linux-kernel&m=119248225007737&w=2

1. Allows using a port range of one single port.
2. Gives back sense of 'remaining' variable.

Signed-off-by: Anton Arapov <aarapov@redhat.com>
Acked-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-18 22:00:17 -07:00

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/*
* 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/igmp.h>
#include <linux/inetdevice.h>
#include <linux/seqlock.h>
#include <net/snmp.h>
#include <net/icmp.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/tcp.h>
#include <net/cipso_ipv4.h>
#include <net/inet_frag.h>
/* From af_inet.c */
extern int sysctl_ip_nonlocal_bind;
#ifdef CONFIG_SYSCTL
static int zero;
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;
#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_ALL(FORWARDING);
int ret;
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
if (write && IPV4_DEVCONF_ALL(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)
{
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;
}
extern seqlock_t sysctl_port_range_lock;
extern int sysctl_local_port_range[2];
/* Update system visible IP port range */
static void set_local_port_range(int range[2])
{
write_seqlock(&sysctl_port_range_lock);
sysctl_local_port_range[0] = range[0];
sysctl_local_port_range[1] = range[1];
write_sequnlock(&sysctl_port_range_lock);
}
/* Validate changes from /proc interface. */
static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret;
int range[2] = { sysctl_local_port_range[0],
sysctl_local_port_range[1] };
ctl_table tmp = {
.data = &range,
.maxlen = sizeof(range),
.mode = table->mode,
.extra1 = &ip_local_port_range_min,
.extra2 = &ip_local_port_range_max,
};
ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos);
if (write && ret == 0) {
if (range[1] < range[0])
ret = -EINVAL;
else
set_local_port_range(range);
}
return ret;
}
/* Validate changes from sysctl interface. */
static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name,
int nlen, void __user *oldval,
size_t __user *oldlenp,
void __user *newval, size_t newlen)
{
int ret;
int range[2] = { sysctl_local_port_range[0],
sysctl_local_port_range[1] };
ctl_table tmp = {
.data = &range,
.maxlen = sizeof(range),
.mode = table->mode,
.extra1 = &ip_local_port_range_min,
.extra2 = &ip_local_port_range_max,
};
ret = sysctl_intvec(&tmp, name, nlen, oldval, oldlenp, newval, newlen);
if (ret == 0 && newval && newlen) {
if (range[1] < range[0])
ret = -EINVAL;
else
set_local_port_range(range);
}
return ret;
}
static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
char val[TCP_CA_NAME_MAX];
ctl_table tbl = {
.data = val,
.maxlen = TCP_CA_NAME_MAX,
};
int ret;
tcp_get_default_congestion_control(val);
ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
if (write && ret == 0)
ret = tcp_set_default_congestion_control(val);
return ret;
}
static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
int nlen, void __user *oldval,
size_t __user *oldlenp,
void __user *newval, size_t newlen)
{
char val[TCP_CA_NAME_MAX];
ctl_table tbl = {
.data = val,
.maxlen = TCP_CA_NAME_MAX,
};
int ret;
tcp_get_default_congestion_control(val);
ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
if (ret == 0 && newval && newlen)
ret = tcp_set_default_congestion_control(val);
return ret;
}
static int proc_tcp_available_congestion_control(ctl_table *ctl,
int write, struct file * filp,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
int ret;
tbl.data = kmalloc(tbl.maxlen, GFP_USER);
if (!tbl.data)
return -ENOMEM;
tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX);
ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
kfree(tbl.data);
return ret;
}
static int proc_allowed_congestion_control(ctl_table *ctl,
int write, struct file * filp,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
int ret;
tbl.data = kmalloc(tbl.maxlen, GFP_USER);
if (!tbl.data)
return -ENOMEM;
tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen);
ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
if (write && ret == 0)
ret = tcp_set_allowed_congestion_control(tbl.data);
kfree(tbl.data);
return ret;
}
static int strategy_allowed_congestion_control(ctl_table *table, int __user *name,
int nlen, void __user *oldval,
size_t __user *oldlenp,
void __user *newval,
size_t newlen)
{
ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
int ret;
tbl.data = kmalloc(tbl.maxlen, GFP_USER);
if (!tbl.data)
return -ENOMEM;
tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
if (ret == 0 && newval && newlen)
ret = tcp_set_allowed_congestion_control(tbl.data);
kfree(tbl.data);
return ret;
}
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_ALL(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_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 = &tcp_death_row.sysctl_max_tw_buckets,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH,
.procname = "ipfrag_high_thresh",
.data = &ip4_frags_ctl.high_thresh,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_IPV4_IPFRAG_LOW_THRESH,
.procname = "ipfrag_low_thresh",
.data = &ip4_frags_ctl.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 = &ip4_frags_ctl.timeout,
.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 = &tcp_death_row.sysctl_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 = &ipv4_local_port_range,
.strategy = &ipv4_sysctl_local_port_range,
},
{
.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_ICMP_ERRORS_USE_INBOUND_IFADDR,
.procname = "icmp_errors_use_inbound_ifaddr",
.data = &sysctl_icmp_errors_use_inbound_ifaddr,
.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_FRTO_RESPONSE,
.procname = "tcp_frto_response",
.data = &sysctl_tcp_frto_response,
.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 = &ip4_frags_ctl.secret_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies
},
{
.procname = "ipfrag_max_dist",
.data = &sysctl_ipfrag_max_dist,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.extra1 = &zero
},
{
.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_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_CONG_CONTROL,
.procname = "tcp_congestion_control",
.mode = 0644,
.maxlen = TCP_CA_NAME_MAX,
.proc_handler = &proc_tcp_congestion_control,
.strategy = &sysctl_tcp_congestion_control,
},
{
.ctl_name = NET_TCP_ABC,
.procname = "tcp_abc",
.data = &sysctl_tcp_abc,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_TCP_MTU_PROBING,
.procname = "tcp_mtu_probing",
.data = &sysctl_tcp_mtu_probing,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_TCP_BASE_MSS,
.procname = "tcp_base_mss",
.data = &sysctl_tcp_base_mss,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS,
.procname = "tcp_workaround_signed_windows",
.data = &sysctl_tcp_workaround_signed_windows,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
#ifdef CONFIG_NET_DMA
{
.ctl_name = NET_TCP_DMA_COPYBREAK,
.procname = "tcp_dma_copybreak",
.data = &sysctl_tcp_dma_copybreak,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
#endif
{
.ctl_name = NET_TCP_SLOW_START_AFTER_IDLE,
.procname = "tcp_slow_start_after_idle",
.data = &sysctl_tcp_slow_start_after_idle,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
#ifdef CONFIG_NETLABEL
{
.ctl_name = NET_CIPSOV4_CACHE_ENABLE,
.procname = "cipso_cache_enable",
.data = &cipso_v4_cache_enabled,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE,
.procname = "cipso_cache_bucket_size",
.data = &cipso_v4_cache_bucketsize,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_CIPSOV4_RBM_OPTFMT,
.procname = "cipso_rbm_optfmt",
.data = &cipso_v4_rbm_optfmt,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_CIPSOV4_RBM_STRICTVALID,
.procname = "cipso_rbm_strictvalid",
.data = &cipso_v4_rbm_strictvalid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif /* CONFIG_NETLABEL */
{
.procname = "tcp_available_congestion_control",
.maxlen = TCP_CA_BUF_MAX,
.mode = 0444,
.proc_handler = &proc_tcp_available_congestion_control,
},
{
.ctl_name = NET_TCP_ALLOWED_CONG_CONTROL,
.procname = "tcp_allowed_congestion_control",
.maxlen = TCP_CA_BUF_MAX,
.mode = 0644,
.proc_handler = &proc_allowed_congestion_control,
.strategy = &strategy_allowed_congestion_control,
},
{
.ctl_name = NET_TCP_MAX_SSTHRESH,
.procname = "tcp_max_ssthresh",
.data = &sysctl_tcp_max_ssthresh,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{ .ctl_name = 0 }
};
#endif /* CONFIG_SYSCTL */
EXPORT_SYMBOL(ipv4_config);
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