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path: root/net/ipv4/sysctl_net_ipv4.c
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Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c555
1 files changed, 296 insertions, 259 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 4710d219f06..79a007c5255 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -12,6 +12,9 @@
#include <linux/inetdevice.h>
#include <linux/seqlock.h>
#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/nsproxy.h>
+#include <linux/swap.h>
#include <net/snmp.h>
#include <net/icmp.h>
#include <net/ip.h>
@@ -20,29 +23,44 @@
#include <net/udp.h>
#include <net/cipso_ipv4.h>
#include <net/inet_frag.h>
+#include <net/ping.h>
+#include <net/tcp_memcontrol.h>
static int zero;
+static int one = 1;
+static int four = 4;
+static int gso_max_segs = GSO_MAX_SEGS;
static int tcp_retr1_max = 255;
static int ip_local_port_range_min[] = { 1, 1 };
static int ip_local_port_range_max[] = { 65535, 65535 };
+static int tcp_adv_win_scale_min = -31;
+static int tcp_adv_win_scale_max = 31;
+static int ip_ttl_min = 1;
+static int ip_ttl_max = 255;
+static int tcp_syn_retries_min = 1;
+static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
+static int ip_ping_group_range_min[] = { 0, 0 };
+static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
/* Update system visible IP port range */
-static void set_local_port_range(int range[2])
+static void set_local_port_range(struct net *net, int range[2])
{
- write_seqlock(&sysctl_local_ports.lock);
- sysctl_local_ports.range[0] = range[0];
- sysctl_local_ports.range[1] = range[1];
- write_sequnlock(&sysctl_local_ports.lock);
+ write_seqlock(&net->ipv4.ip_local_ports.lock);
+ net->ipv4.ip_local_ports.range[0] = range[0];
+ net->ipv4.ip_local_ports.range[1] = range[1];
+ write_sequnlock(&net->ipv4.ip_local_ports.lock);
}
/* Validate changes from /proc interface. */
-static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
+static int ipv4_local_port_range(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
+ struct net *net =
+ container_of(table->data, struct net, ipv4.ip_local_ports.range);
int ret;
int range[2];
- ctl_table tmp = {
+ struct ctl_table tmp = {
.data = &range,
.maxlen = sizeof(range),
.mode = table->mode,
@@ -50,52 +68,88 @@ static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
.extra2 = &ip_local_port_range_max,
};
- inet_get_local_port_range(range, range + 1);
- ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos);
+ inet_get_local_port_range(net, &range[0], &range[1]);
+
+ ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
if (write && ret == 0) {
if (range[1] < range[0])
ret = -EINVAL;
else
- set_local_port_range(range);
+ set_local_port_range(net, range);
}
return ret;
}
-/* Validate changes from sysctl interface. */
-static int ipv4_sysctl_local_port_range(ctl_table *table,
- void __user *oldval,
- size_t __user *oldlenp,
- void __user *newval, size_t newlen)
+
+static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high)
+{
+ kgid_t *data = table->data;
+ struct net *net =
+ container_of(table->data, struct net, ipv4.ping_group_range.range);
+ unsigned int seq;
+ do {
+ seq = read_seqbegin(&net->ipv4.ip_local_ports.lock);
+
+ *low = data[0];
+ *high = data[1];
+ } while (read_seqretry(&net->ipv4.ip_local_ports.lock, seq));
+}
+
+/* Update system visible IP port range */
+static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high)
+{
+ kgid_t *data = table->data;
+ struct net *net =
+ container_of(table->data, struct net, ipv4.ping_group_range.range);
+ write_seqlock(&net->ipv4.ip_local_ports.lock);
+ data[0] = low;
+ data[1] = high;
+ write_sequnlock(&net->ipv4.ip_local_ports.lock);
+}
+
+/* Validate changes from /proc interface. */
+static int ipv4_ping_group_range(struct ctl_table *table, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
+ struct user_namespace *user_ns = current_user_ns();
int ret;
- int range[2];
- ctl_table tmp = {
- .data = &range,
- .maxlen = sizeof(range),
+ gid_t urange[2];
+ kgid_t low, high;
+ struct ctl_table tmp = {
+ .data = &urange,
+ .maxlen = sizeof(urange),
.mode = table->mode,
- .extra1 = &ip_local_port_range_min,
- .extra2 = &ip_local_port_range_max,
+ .extra1 = &ip_ping_group_range_min,
+ .extra2 = &ip_ping_group_range_max,
};
- inet_get_local_port_range(range, range + 1);
- ret = sysctl_intvec(&tmp, oldval, oldlenp, newval, newlen);
- if (ret == 0 && newval && newlen) {
- if (range[1] < range[0])
- ret = -EINVAL;
- else
- set_local_port_range(range);
+ inet_get_ping_group_range_table(table, &low, &high);
+ urange[0] = from_kgid_munged(user_ns, low);
+ urange[1] = from_kgid_munged(user_ns, high);
+ ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
+
+ if (write && ret == 0) {
+ low = make_kgid(user_ns, urange[0]);
+ high = make_kgid(user_ns, urange[1]);
+ if (!gid_valid(low) || !gid_valid(high) ||
+ (urange[1] < urange[0]) || gid_lt(high, low)) {
+ low = make_kgid(&init_user_ns, 1);
+ high = make_kgid(&init_user_ns, 0);
+ }
+ set_ping_group_range(table, low, high);
}
+
return ret;
}
-
-static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp,
+static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
char val[TCP_CA_NAME_MAX];
- ctl_table tbl = {
+ struct ctl_table tbl = {
.data = val,
.maxlen = TCP_CA_NAME_MAX,
};
@@ -103,54 +157,35 @@ static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file *
tcp_get_default_congestion_control(val);
- ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+ ret = proc_dostring(&tbl, write, 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,
- 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, oldval, oldlenp, newval, newlen);
- if (ret == 1 && 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,
+static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
+ int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
- ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
+ struct 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);
+ ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
kfree(tbl.data);
return ret;
}
-static int proc_allowed_congestion_control(ctl_table *ctl,
- int write, struct file * filp,
+static int proc_allowed_congestion_control(struct ctl_table *ctl,
+ int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
- ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+ struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
int ret;
tbl.data = kmalloc(tbl.maxlen, GFP_USER);
@@ -158,39 +193,62 @@ static int proc_allowed_congestion_control(ctl_table *ctl,
return -ENOMEM;
tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen);
- ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+ ret = proc_dostring(&tbl, write, 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,
- void __user *oldval,
- size_t __user *oldlenp,
- void __user *newval,
- size_t newlen)
+static int proc_tcp_fastopen_key(struct ctl_table *ctl, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
{
- ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+ struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
+ struct tcp_fastopen_context *ctxt;
int ret;
+ u32 user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */
- tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL);
if (!tbl.data)
return -ENOMEM;
- tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
- ret = sysctl_string(&tbl, oldval, oldlenp, newval, newlen);
- if (ret == 1 && newval && newlen)
- ret = tcp_set_allowed_congestion_control(tbl.data);
- kfree(tbl.data);
+ rcu_read_lock();
+ ctxt = rcu_dereference(tcp_fastopen_ctx);
+ if (ctxt)
+ memcpy(user_key, ctxt->key, TCP_FASTOPEN_KEY_LENGTH);
+ else
+ memset(user_key, 0, sizeof(user_key));
+ rcu_read_unlock();
- return ret;
+ snprintf(tbl.data, tbl.maxlen, "%08x-%08x-%08x-%08x",
+ user_key[0], user_key[1], user_key[2], user_key[3]);
+ ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
+ if (write && ret == 0) {
+ if (sscanf(tbl.data, "%x-%x-%x-%x", user_key, user_key + 1,
+ user_key + 2, user_key + 3) != 4) {
+ ret = -EINVAL;
+ goto bad_key;
+ }
+ /* Generate a dummy secret but don't publish it. This
+ * is needed so we don't regenerate a new key on the
+ * first invocation of tcp_fastopen_cookie_gen
+ */
+ tcp_fastopen_init_key_once(false);
+ tcp_fastopen_reset_cipher(user_key, TCP_FASTOPEN_KEY_LENGTH);
+ }
+
+bad_key:
+ pr_debug("proc FO key set 0x%x-%x-%x-%x <- 0x%s: %u\n",
+ user_key[0], user_key[1], user_key[2], user_key[3],
+ (char *)tbl.data, ret);
+ kfree(tbl.data);
+ return ret;
}
static struct ctl_table ipv4_table[] = {
{
- .ctl_name = NET_IPV4_TCP_TIMESTAMPS,
.procname = "tcp_timestamps",
.data = &sysctl_tcp_timestamps,
.maxlen = sizeof(int),
@@ -198,7 +256,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_TCP_WINDOW_SCALING,
.procname = "tcp_window_scaling",
.data = &sysctl_tcp_window_scaling,
.maxlen = sizeof(int),
@@ -206,7 +263,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_TCP_SACK,
.procname = "tcp_sack",
.data = &sysctl_tcp_sack,
.maxlen = sizeof(int),
@@ -214,7 +270,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE,
.procname = "tcp_retrans_collapse",
.data = &sysctl_tcp_retrans_collapse,
.maxlen = sizeof(int),
@@ -222,25 +277,15 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .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,
- .extra2 = &init_net,
- },
- {
- .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
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &ip_ttl_min,
+ .extra2 = &ip_ttl_max,
},
{
- .ctl_name = NET_IPV4_NONLOCAL_BIND,
.procname = "ip_nonlocal_bind",
.data = &sysctl_ip_nonlocal_bind,
.maxlen = sizeof(int),
@@ -248,15 +293,15 @@ static struct ctl_table ipv4_table[] = {
.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
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &tcp_syn_retries_min,
+ .extra2 = &tcp_syn_retries_max
},
{
- .ctl_name = NET_TCP_SYNACK_RETRIES,
.procname = "tcp_synack_retries",
.data = &sysctl_tcp_synack_retries,
.maxlen = sizeof(int),
@@ -264,7 +309,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_MAX_ORPHANS,
.procname = "tcp_max_orphans",
.data = &sysctl_tcp_max_orphans,
.maxlen = sizeof(int),
@@ -272,7 +316,6 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -280,7 +323,13 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_DYNADDR,
+ .procname = "ip_early_demux",
+ .data = &sysctl_ip_early_demux,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
.procname = "ip_dynaddr",
.data = &sysctl_ip_dynaddr,
.maxlen = sizeof(int),
@@ -288,16 +337,13 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .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),
@@ -305,26 +351,21 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -332,17 +373,14 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -351,7 +389,19 @@ static struct ctl_table ipv4_table[] = {
},
#endif
{
- .ctl_name = NET_TCP_TW_RECYCLE,
+ .procname = "tcp_fastopen",
+ .data = &sysctl_tcp_fastopen,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "tcp_fastopen_key",
+ .mode = 0600,
+ .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * 2) + 10),
+ .proc_handler = proc_tcp_fastopen_key,
+ },
+ {
.procname = "tcp_tw_recycle",
.data = &tcp_death_row.sysctl_tw_recycle,
.maxlen = sizeof(int),
@@ -359,7 +409,6 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -367,7 +416,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_STDURG,
.procname = "tcp_stdurg",
.data = &sysctl_tcp_stdurg,
.maxlen = sizeof(int),
@@ -375,7 +423,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_RFC1337,
.procname = "tcp_rfc1337",
.data = &sysctl_tcp_rfc1337,
.maxlen = sizeof(int),
@@ -383,7 +430,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_MAX_SYN_BACKLOG,
.procname = "tcp_max_syn_backlog",
.data = &sysctl_max_syn_backlog,
.maxlen = sizeof(int),
@@ -391,27 +437,13 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_LOCAL_PORT_RANGE,
- .procname = "ip_local_port_range",
- .data = &sysctl_local_ports.range,
- .maxlen = sizeof(sysctl_local_ports.range),
- .mode = 0644,
- .proc_handler = ipv4_local_port_range,
- .strategy = ipv4_sysctl_local_port_range,
- },
-#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),
@@ -419,7 +451,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_INET_PEER_THRESHOLD,
.procname = "inet_peer_threshold",
.data = &inet_peer_threshold,
.maxlen = sizeof(int),
@@ -427,43 +458,20 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -471,7 +479,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_FACK,
.procname = "tcp_fack",
.data = &sysctl_tcp_fack,
.maxlen = sizeof(int),
@@ -479,7 +486,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_REORDERING,
.procname = "tcp_reordering",
.data = &sysctl_tcp_reordering,
.maxlen = sizeof(int),
@@ -487,15 +493,6 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -503,31 +500,36 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_MEM,
.procname = "tcp_mem",
- .data = &sysctl_tcp_mem,
.maxlen = sizeof(sysctl_tcp_mem),
+ .data = &sysctl_tcp_mem,
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_doulongvec_minmax,
},
{
- .ctl_name = NET_TCP_WMEM,
.procname = "tcp_wmem",
.data = &sysctl_tcp_wmem,
.maxlen = sizeof(sysctl_tcp_wmem),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &one,
+ },
+ {
+ .procname = "tcp_notsent_lowat",
+ .data = &sysctl_tcp_notsent_lowat,
+ .maxlen = sizeof(sysctl_tcp_notsent_lowat),
+ .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
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &one,
},
{
- .ctl_name = NET_TCP_APP_WIN,
.procname = "tcp_app_win",
.data = &sysctl_tcp_app_win,
.maxlen = sizeof(int),
@@ -535,15 +537,15 @@ static struct ctl_table ipv4_table[] = {
.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
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &tcp_adv_win_scale_min,
+ .extra2 = &tcp_adv_win_scale_max,
},
{
- .ctl_name = NET_TCP_TW_REUSE,
.procname = "tcp_tw_reuse",
.data = &sysctl_tcp_tw_reuse,
.maxlen = sizeof(int),
@@ -551,7 +553,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_FRTO,
.procname = "tcp_frto",
.data = &sysctl_tcp_frto,
.maxlen = sizeof(int),
@@ -559,15 +560,6 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -575,7 +567,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_TCP_NO_METRICS_SAVE,
.procname = "tcp_no_metrics_save",
.data = &sysctl_tcp_nometrics_save,
.maxlen = sizeof(int),
@@ -583,7 +574,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_TCP_MODERATE_RCVBUF,
.procname = "tcp_moderate_rcvbuf",
.data = &sysctl_tcp_moderate_rcvbuf,
.maxlen = sizeof(int),
@@ -591,7 +581,6 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -599,23 +588,12 @@ static struct ctl_table ipv4_table[] = {
.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),
@@ -623,7 +601,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_TCP_BASE_MSS,
.procname = "tcp_base_mss",
.data = &sysctl_tcp_base_mss,
.maxlen = sizeof(int),
@@ -631,16 +608,28 @@ static struct ctl_table ipv4_table[] = {
.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
},
+ {
+ .procname = "tcp_limit_output_bytes",
+ .data = &sysctl_tcp_limit_output_bytes,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "tcp_challenge_ack_limit",
+ .data = &sysctl_tcp_challenge_ack_limit,
+ .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),
@@ -649,7 +638,6 @@ static struct ctl_table ipv4_table[] = {
},
#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),
@@ -658,7 +646,6 @@ static struct ctl_table ipv4_table[] = {
},
#ifdef CONFIG_NETLABEL
{
- .ctl_name = NET_CIPSOV4_CACHE_ENABLE,
.procname = "cipso_cache_enable",
.data = &cipso_v4_cache_enabled,
.maxlen = sizeof(int),
@@ -666,7 +653,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE,
.procname = "cipso_cache_bucket_size",
.data = &cipso_v4_cache_bucketsize,
.maxlen = sizeof(int),
@@ -674,7 +660,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_CIPSOV4_RBM_OPTFMT,
.procname = "cipso_rbm_optfmt",
.data = &cipso_v4_rbm_optfmt,
.maxlen = sizeof(int),
@@ -682,7 +667,6 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_CIPSOV4_RBM_STRICTVALID,
.procname = "cipso_rbm_strictvalid",
.data = &cipso_v4_rbm_strictvalid,
.maxlen = sizeof(int),
@@ -697,57 +681,80 @@ static struct ctl_table ipv4_table[] = {
.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,
+ .procname = "tcp_thin_linear_timeouts",
+ .data = &sysctl_tcp_thin_linear_timeouts,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "tcp_thin_dupack",
+ .data = &sysctl_tcp_thin_dupack,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "tcp_early_retrans",
+ .data = &sysctl_tcp_early_retrans,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &zero,
+ .extra2 = &four,
+ },
+ {
+ .procname = "tcp_min_tso_segs",
+ .data = &sysctl_tcp_min_tso_segs,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &zero,
+ .extra2 = &gso_max_segs,
+ },
+ {
+ .procname = "tcp_autocorking",
+ .data = &sysctl_tcp_autocorking,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &zero,
+ .extra2 = &one,
},
{
- .ctl_name = CTL_UNNUMBERED,
.procname = "udp_mem",
.data = &sysctl_udp_mem,
.maxlen = sizeof(sysctl_udp_mem),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .strategy = sysctl_intvec,
- .extra1 = &zero
+ .proc_handler = proc_doulongvec_minmax,
},
{
- .ctl_name = CTL_UNNUMBERED,
.procname = "udp_rmem_min",
.data = &sysctl_udp_rmem_min,
.maxlen = sizeof(sysctl_udp_rmem_min),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .strategy = sysctl_intvec,
- .extra1 = &zero
+ .extra1 = &one
},
{
- .ctl_name = CTL_UNNUMBERED,
.procname = "udp_wmem_min",
.data = &sysctl_udp_wmem_min,
.maxlen = sizeof(sysctl_udp_wmem_min),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .strategy = sysctl_intvec,
- .extra1 = &zero
+ .extra1 = &one
},
- { .ctl_name = 0 }
+ { }
};
static struct ctl_table ipv4_net_table[] = {
{
- .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL,
.procname = "icmp_echo_ignore_all",
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_all,
.maxlen = sizeof(int),
@@ -755,7 +762,6 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS,
.procname = "icmp_echo_ignore_broadcasts",
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts,
.maxlen = sizeof(int),
@@ -763,7 +769,6 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES,
.procname = "icmp_ignore_bogus_error_responses",
.data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses,
.maxlen = sizeof(int),
@@ -771,7 +776,6 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR,
.procname = "icmp_errors_use_inbound_ifaddr",
.data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr,
.maxlen = sizeof(int),
@@ -779,16 +783,13 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = NET_IPV4_ICMP_RATELIMIT,
.procname = "icmp_ratelimit",
.data = &init_net.ipv4.sysctl_icmp_ratelimit,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_ms_jiffies,
- .strategy = sysctl_ms_jiffies
},
{
- .ctl_name = NET_IPV4_ICMP_RATEMASK,
.procname = "icmp_ratemask",
.data = &init_net.ipv4.sysctl_icmp_ratemask,
.maxlen = sizeof(int),
@@ -796,60 +797,95 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .ctl_name = CTL_UNNUMBERED,
- .procname = "rt_cache_rebuild_count",
- .data = &init_net.ipv4.sysctl_rt_cache_rebuild_count,
+ .procname = "ping_group_range",
+ .data = &init_net.ipv4.ping_group_range.range,
+ .maxlen = sizeof(gid_t)*2,
+ .mode = 0644,
+ .proc_handler = ipv4_ping_group_range,
+ },
+ {
+ .procname = "tcp_ecn",
+ .data = &init_net.ipv4.sysctl_tcp_ecn,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
+ {
+ .procname = "ip_local_port_range",
+ .maxlen = sizeof(init_net.ipv4.ip_local_ports.range),
+ .data = &init_net.ipv4.ip_local_ports.range,
+ .mode = 0644,
+ .proc_handler = ipv4_local_port_range,
+ },
+ {
+ .procname = "ip_local_reserved_ports",
+ .data = &init_net.ipv4.sysctl_local_reserved_ports,
+ .maxlen = 65536,
+ .mode = 0644,
+ .proc_handler = proc_do_large_bitmap,
+ },
+ {
+ .procname = "ip_no_pmtu_disc",
+ .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "ip_forward_use_pmtu",
+ .data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "fwmark_reflect",
+ .data = &init_net.ipv4.sysctl_fwmark_reflect,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "tcp_fwmark_accept",
+ .data = &init_net.ipv4.sysctl_tcp_fwmark_accept,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
{ }
};
-struct ctl_path net_ipv4_ctl_path[] = {
- { .procname = "net", .ctl_name = CTL_NET, },
- { .procname = "ipv4", .ctl_name = NET_IPV4, },
- { },
-};
-EXPORT_SYMBOL_GPL(net_ipv4_ctl_path);
-
static __net_init int ipv4_sysctl_init_net(struct net *net)
{
struct ctl_table *table;
table = ipv4_net_table;
- if (net != &init_net) {
+ if (!net_eq(net, &init_net)) {
+ int i;
+
table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL);
if (table == NULL)
goto err_alloc;
- table[0].data =
- &net->ipv4.sysctl_icmp_echo_ignore_all;
- table[1].data =
- &net->ipv4.sysctl_icmp_echo_ignore_broadcasts;
- table[2].data =
- &net->ipv4.sysctl_icmp_ignore_bogus_error_responses;
- table[3].data =
- &net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr;
- table[4].data =
- &net->ipv4.sysctl_icmp_ratelimit;
- table[5].data =
- &net->ipv4.sysctl_icmp_ratemask;
- table[6].data =
- &net->ipv4.sysctl_rt_cache_rebuild_count;
+ /* Update the variables to point into the current struct net */
+ for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++)
+ table[i].data += (void *)net - (void *)&init_net;
}
- net->ipv4.sysctl_rt_cache_rebuild_count = 4;
-
- net->ipv4.ipv4_hdr = register_net_sysctl_table(net,
- net_ipv4_ctl_path, table);
+ net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
if (net->ipv4.ipv4_hdr == NULL)
goto err_reg;
+ net->ipv4.sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL);
+ if (!net->ipv4.sysctl_local_reserved_ports)
+ goto err_ports;
+
return 0;
+err_ports:
+ unregister_net_sysctl_table(net->ipv4.ipv4_hdr);
err_reg:
- if (net != &init_net)
+ if (!net_eq(net, &init_net))
kfree(table);
err_alloc:
return -ENOMEM;
@@ -859,6 +895,7 @@ static __net_exit void ipv4_sysctl_exit_net(struct net *net)
{
struct ctl_table *table;
+ kfree(net->ipv4.sysctl_local_reserved_ports);
table = net->ipv4.ipv4_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->ipv4.ipv4_hdr);
kfree(table);
@@ -873,12 +910,12 @@ static __init int sysctl_ipv4_init(void)
{
struct ctl_table_header *hdr;
- hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table);
+ hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table);
if (hdr == NULL)
return -ENOMEM;
if (register_pernet_subsys(&ipv4_sysctl_ops)) {
- unregister_sysctl_table(hdr);
+ unregister_net_sysctl_table(hdr);
return -ENOMEM;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 22:36:56 +0000