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1468 lines
37 KiB
1468 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem. |
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* |
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* Begun April 1, 1996, Mike Shaver. |
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* Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS] |
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*/ |
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|
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#include <linux/sysctl.h> |
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#include <linux/seqlock.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <net/icmp.h> |
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#include <net/ip.h> |
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#include <net/ip_fib.h> |
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#include <net/tcp.h> |
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#include <net/udp.h> |
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#include <net/cipso_ipv4.h> |
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#include <net/ping.h> |
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#include <net/protocol.h> |
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#include <net/netevent.h> |
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|
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static int two = 2; |
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static int three __maybe_unused = 3; |
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static int four = 4; |
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static int thousand = 1000; |
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static int tcp_retr1_max = 255; |
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static int ip_local_port_range_min[] = { 1, 1 }; |
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static int ip_local_port_range_max[] = { 65535, 65535 }; |
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static int tcp_adv_win_scale_min = -31; |
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static int tcp_adv_win_scale_max = 31; |
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static int tcp_min_snd_mss_min = TCP_MIN_SND_MSS; |
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static int tcp_min_snd_mss_max = 65535; |
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static int ip_privileged_port_min; |
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static int ip_privileged_port_max = 65535; |
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static int ip_ttl_min = 1; |
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static int ip_ttl_max = 255; |
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static int tcp_syn_retries_min = 1; |
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static int tcp_syn_retries_max = MAX_TCP_SYNCNT; |
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static int ip_ping_group_range_min[] = { 0, 0 }; |
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static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; |
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static u32 u32_max_div_HZ = UINT_MAX / HZ; |
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static int one_day_secs = 24 * 3600; |
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static u32 fib_multipath_hash_fields_all_mask __maybe_unused = |
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FIB_MULTIPATH_HASH_FIELD_ALL_MASK; |
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|
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/* obsolete */ |
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static int sysctl_tcp_low_latency __read_mostly; |
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|
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/* Update system visible IP port range */ |
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static void set_local_port_range(struct net *net, int range[2]) |
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{ |
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bool same_parity = !((range[0] ^ range[1]) & 1); |
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|
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write_seqlock_bh(&net->ipv4.ip_local_ports.lock); |
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if (same_parity && !net->ipv4.ip_local_ports.warned) { |
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net->ipv4.ip_local_ports.warned = true; |
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pr_err_ratelimited("ip_local_port_range: prefer different parity for start/end values.\n"); |
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} |
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net->ipv4.ip_local_ports.range[0] = range[0]; |
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net->ipv4.ip_local_ports.range[1] = range[1]; |
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write_sequnlock_bh(&net->ipv4.ip_local_ports.lock); |
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} |
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|
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/* Validate changes from /proc interface. */ |
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static int ipv4_local_port_range(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net = |
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container_of(table->data, struct net, ipv4.ip_local_ports.range); |
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int ret; |
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int range[2]; |
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struct ctl_table tmp = { |
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.data = &range, |
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.maxlen = sizeof(range), |
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.mode = table->mode, |
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.extra1 = &ip_local_port_range_min, |
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.extra2 = &ip_local_port_range_max, |
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}; |
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|
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inet_get_local_port_range(net, &range[0], &range[1]); |
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|
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ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
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|
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if (write && ret == 0) { |
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/* Ensure that the upper limit is not smaller than the lower, |
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* and that the lower does not encroach upon the privileged |
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* port limit. |
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*/ |
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if ((range[1] < range[0]) || |
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(range[0] < net->ipv4.sysctl_ip_prot_sock)) |
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ret = -EINVAL; |
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else |
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set_local_port_range(net, range); |
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} |
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|
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return ret; |
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} |
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|
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/* Validate changes from /proc interface. */ |
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static int ipv4_privileged_ports(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net = container_of(table->data, struct net, |
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ipv4.sysctl_ip_prot_sock); |
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int ret; |
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int pports; |
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int range[2]; |
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struct ctl_table tmp = { |
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.data = &pports, |
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.maxlen = sizeof(pports), |
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.mode = table->mode, |
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.extra1 = &ip_privileged_port_min, |
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.extra2 = &ip_privileged_port_max, |
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}; |
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pports = net->ipv4.sysctl_ip_prot_sock; |
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|
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ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
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|
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if (write && ret == 0) { |
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inet_get_local_port_range(net, &range[0], &range[1]); |
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/* Ensure that the local port range doesn't overlap with the |
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* privileged port range. |
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*/ |
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if (range[0] < pports) |
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ret = -EINVAL; |
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else |
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net->ipv4.sysctl_ip_prot_sock = pports; |
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} |
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|
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return ret; |
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} |
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|
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static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) |
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{ |
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kgid_t *data = table->data; |
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struct net *net = |
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container_of(table->data, struct net, ipv4.ping_group_range.range); |
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unsigned int seq; |
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do { |
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seq = read_seqbegin(&net->ipv4.ping_group_range.lock); |
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|
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*low = data[0]; |
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*high = data[1]; |
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} while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); |
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} |
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|
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/* Update system visible IP port range */ |
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static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) |
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{ |
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kgid_t *data = table->data; |
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struct net *net = |
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container_of(table->data, struct net, ipv4.ping_group_range.range); |
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write_seqlock(&net->ipv4.ping_group_range.lock); |
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data[0] = low; |
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data[1] = high; |
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write_sequnlock(&net->ipv4.ping_group_range.lock); |
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} |
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|
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/* Validate changes from /proc interface. */ |
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static int ipv4_ping_group_range(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct user_namespace *user_ns = current_user_ns(); |
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int ret; |
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gid_t urange[2]; |
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kgid_t low, high; |
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struct ctl_table tmp = { |
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.data = &urange, |
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.maxlen = sizeof(urange), |
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.mode = table->mode, |
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.extra1 = &ip_ping_group_range_min, |
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.extra2 = &ip_ping_group_range_max, |
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}; |
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|
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inet_get_ping_group_range_table(table, &low, &high); |
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urange[0] = from_kgid_munged(user_ns, low); |
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urange[1] = from_kgid_munged(user_ns, high); |
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ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
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|
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if (write && ret == 0) { |
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low = make_kgid(user_ns, urange[0]); |
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high = make_kgid(user_ns, urange[1]); |
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if (!gid_valid(low) || !gid_valid(high)) |
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return -EINVAL; |
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if (urange[1] < urange[0] || gid_lt(high, low)) { |
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low = make_kgid(&init_user_ns, 1); |
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high = make_kgid(&init_user_ns, 0); |
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} |
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set_ping_group_range(table, low, high); |
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} |
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|
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return ret; |
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} |
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|
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static int ipv4_fwd_update_priority(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net; |
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int ret; |
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|
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net = container_of(table->data, struct net, |
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ipv4.sysctl_ip_fwd_update_priority); |
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ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
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if (write && ret == 0) |
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call_netevent_notifiers(NETEVENT_IPV4_FWD_UPDATE_PRIORITY_UPDATE, |
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net); |
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|
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return ret; |
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} |
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|
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static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net = container_of(ctl->data, struct net, |
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ipv4.tcp_congestion_control); |
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char val[TCP_CA_NAME_MAX]; |
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struct ctl_table tbl = { |
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.data = val, |
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.maxlen = TCP_CA_NAME_MAX, |
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}; |
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int ret; |
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|
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tcp_get_default_congestion_control(net, val); |
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|
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ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
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if (write && ret == 0) |
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ret = tcp_set_default_congestion_control(net, val); |
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return ret; |
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} |
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|
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static int proc_tcp_available_congestion_control(struct ctl_table *ctl, |
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int write, void *buffer, |
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size_t *lenp, loff_t *ppos) |
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{ |
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struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
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int ret; |
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|
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tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
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if (!tbl.data) |
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return -ENOMEM; |
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tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); |
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ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
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kfree(tbl.data); |
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return ret; |
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} |
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|
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static int proc_allowed_congestion_control(struct ctl_table *ctl, |
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int write, void *buffer, |
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size_t *lenp, loff_t *ppos) |
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{ |
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struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
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int ret; |
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|
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tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
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if (!tbl.data) |
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return -ENOMEM; |
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|
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tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); |
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ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
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if (write && ret == 0) |
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ret = tcp_set_allowed_congestion_control(tbl.data); |
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kfree(tbl.data); |
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return ret; |
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} |
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|
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static int sscanf_key(char *buf, __le32 *key) |
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{ |
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u32 user_key[4]; |
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int i, ret = 0; |
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|
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if (sscanf(buf, "%x-%x-%x-%x", user_key, user_key + 1, |
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user_key + 2, user_key + 3) != 4) { |
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ret = -EINVAL; |
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} else { |
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for (i = 0; i < ARRAY_SIZE(user_key); i++) |
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key[i] = cpu_to_le32(user_key[i]); |
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} |
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pr_debug("proc TFO key set 0x%x-%x-%x-%x <- 0x%s: %u\n", |
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user_key[0], user_key[1], user_key[2], user_key[3], buf, ret); |
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|
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return ret; |
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} |
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|
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static int proc_tcp_fastopen_key(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net = container_of(table->data, struct net, |
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ipv4.sysctl_tcp_fastopen); |
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/* maxlen to print the list of keys in hex (*2), with dashes |
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* separating doublewords and a comma in between keys. |
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*/ |
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struct ctl_table tbl = { .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * |
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2 * TCP_FASTOPEN_KEY_MAX) + |
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(TCP_FASTOPEN_KEY_MAX * 5)) }; |
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u32 user_key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(u32)]; |
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__le32 key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(__le32)]; |
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char *backup_data; |
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int ret, i = 0, off = 0, n_keys; |
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|
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tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL); |
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if (!tbl.data) |
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return -ENOMEM; |
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|
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n_keys = tcp_fastopen_get_cipher(net, NULL, (u64 *)key); |
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if (!n_keys) { |
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memset(&key[0], 0, TCP_FASTOPEN_KEY_LENGTH); |
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n_keys = 1; |
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} |
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|
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for (i = 0; i < n_keys * 4; i++) |
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user_key[i] = le32_to_cpu(key[i]); |
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|
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for (i = 0; i < n_keys; i++) { |
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off += snprintf(tbl.data + off, tbl.maxlen - off, |
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"%08x-%08x-%08x-%08x", |
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user_key[i * 4], |
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user_key[i * 4 + 1], |
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user_key[i * 4 + 2], |
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user_key[i * 4 + 3]); |
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|
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if (WARN_ON_ONCE(off >= tbl.maxlen - 1)) |
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break; |
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|
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if (i + 1 < n_keys) |
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off += snprintf(tbl.data + off, tbl.maxlen - off, ","); |
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} |
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|
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ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
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|
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if (write && ret == 0) { |
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backup_data = strchr(tbl.data, ','); |
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if (backup_data) { |
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*backup_data = '\0'; |
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backup_data++; |
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} |
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if (sscanf_key(tbl.data, key)) { |
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ret = -EINVAL; |
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goto bad_key; |
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} |
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if (backup_data) { |
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if (sscanf_key(backup_data, key + 4)) { |
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ret = -EINVAL; |
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goto bad_key; |
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} |
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} |
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tcp_fastopen_reset_cipher(net, NULL, key, |
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backup_data ? key + 4 : NULL); |
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} |
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|
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bad_key: |
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kfree(tbl.data); |
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return ret; |
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} |
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|
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static void proc_configure_early_demux(int enabled, int protocol) |
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{ |
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struct net_protocol *ipprot; |
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#if IS_ENABLED(CONFIG_IPV6) |
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struct inet6_protocol *ip6prot; |
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#endif |
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|
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rcu_read_lock(); |
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|
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ipprot = rcu_dereference(inet_protos[protocol]); |
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if (ipprot) |
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ipprot->early_demux = enabled ? ipprot->early_demux_handler : |
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NULL; |
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|
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#if IS_ENABLED(CONFIG_IPV6) |
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ip6prot = rcu_dereference(inet6_protos[protocol]); |
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if (ip6prot) |
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ip6prot->early_demux = enabled ? ip6prot->early_demux_handler : |
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NULL; |
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#endif |
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rcu_read_unlock(); |
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} |
|
|
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static int proc_tcp_early_demux(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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int ret = 0; |
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|
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ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
|
|
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if (write && !ret) { |
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int enabled = init_net.ipv4.sysctl_tcp_early_demux; |
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|
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proc_configure_early_demux(enabled, IPPROTO_TCP); |
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} |
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|
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return ret; |
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} |
|
|
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static int proc_udp_early_demux(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos) |
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{ |
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int ret = 0; |
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|
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ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
|
|
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if (write && !ret) { |
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int enabled = init_net.ipv4.sysctl_udp_early_demux; |
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|
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proc_configure_early_demux(enabled, IPPROTO_UDP); |
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} |
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|
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return ret; |
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} |
|
|
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static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, |
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int write, void *buffer, |
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size_t *lenp, loff_t *ppos) |
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{ |
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struct net *net = container_of(table->data, struct net, |
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ipv4.sysctl_tcp_fastopen_blackhole_timeout); |
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int ret; |
|
|
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ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); |
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if (write && ret == 0) |
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atomic_set(&net->ipv4.tfo_active_disable_times, 0); |
|
|
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return ret; |
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} |
|
|
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static int proc_tcp_available_ulp(struct ctl_table *ctl, |
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int write, void *buffer, size_t *lenp, |
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loff_t *ppos) |
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{ |
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struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; |
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int ret; |
|
|
|
tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
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if (!tbl.data) |
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return -ENOMEM; |
|
tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX); |
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ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
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kfree(tbl.data); |
|
|
|
return ret; |
|
} |
|
|
|
#ifdef CONFIG_IP_ROUTE_MULTIPATH |
|
static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, |
|
void *buffer, size_t *lenp, |
|
loff_t *ppos) |
|
{ |
|
struct net *net = container_of(table->data, struct net, |
|
ipv4.sysctl_fib_multipath_hash_policy); |
|
int ret; |
|
|
|
ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
|
if (write && ret == 0) |
|
call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); |
|
|
|
return ret; |
|
} |
|
|
|
static int proc_fib_multipath_hash_fields(struct ctl_table *table, int write, |
|
void *buffer, size_t *lenp, |
|
loff_t *ppos) |
|
{ |
|
struct net *net; |
|
int ret; |
|
|
|
net = container_of(table->data, struct net, |
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ipv4.sysctl_fib_multipath_hash_fields); |
|
ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos); |
|
if (write && ret == 0) |
|
call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); |
|
|
|
return ret; |
|
} |
|
#endif |
|
|
|
static struct ctl_table ipv4_table[] = { |
|
{ |
|
.procname = "tcp_max_orphans", |
|
.data = &sysctl_tcp_max_orphans, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "inet_peer_threshold", |
|
.data = &inet_peer_threshold, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "inet_peer_minttl", |
|
.data = &inet_peer_minttl, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_jiffies, |
|
}, |
|
{ |
|
.procname = "inet_peer_maxttl", |
|
.data = &inet_peer_maxttl, |
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.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_jiffies, |
|
}, |
|
{ |
|
.procname = "tcp_mem", |
|
.maxlen = sizeof(sysctl_tcp_mem), |
|
.data = &sysctl_tcp_mem, |
|
.mode = 0644, |
|
.proc_handler = proc_doulongvec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_low_latency", |
|
.data = &sysctl_tcp_low_latency, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
#ifdef CONFIG_NETLABEL |
|
{ |
|
.procname = "cipso_cache_enable", |
|
.data = &cipso_v4_cache_enabled, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "cipso_cache_bucket_size", |
|
.data = &cipso_v4_cache_bucketsize, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "cipso_rbm_optfmt", |
|
.data = &cipso_v4_rbm_optfmt, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "cipso_rbm_strictvalid", |
|
.data = &cipso_v4_rbm_strictvalid, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
#endif /* CONFIG_NETLABEL */ |
|
{ |
|
.procname = "tcp_available_ulp", |
|
.maxlen = TCP_ULP_BUF_MAX, |
|
.mode = 0444, |
|
.proc_handler = proc_tcp_available_ulp, |
|
}, |
|
{ |
|
.procname = "icmp_msgs_per_sec", |
|
.data = &sysctl_icmp_msgs_per_sec, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
}, |
|
{ |
|
.procname = "icmp_msgs_burst", |
|
.data = &sysctl_icmp_msgs_burst, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
}, |
|
{ |
|
.procname = "udp_mem", |
|
.data = &sysctl_udp_mem, |
|
.maxlen = sizeof(sysctl_udp_mem), |
|
.mode = 0644, |
|
.proc_handler = proc_doulongvec_minmax, |
|
}, |
|
{ |
|
.procname = "fib_sync_mem", |
|
.data = &sysctl_fib_sync_mem, |
|
.maxlen = sizeof(sysctl_fib_sync_mem), |
|
.mode = 0644, |
|
.proc_handler = proc_douintvec_minmax, |
|
.extra1 = &sysctl_fib_sync_mem_min, |
|
.extra2 = &sysctl_fib_sync_mem_max, |
|
}, |
|
{ } |
|
}; |
|
|
|
static struct ctl_table ipv4_net_table[] = { |
|
{ |
|
.procname = "icmp_echo_ignore_all", |
|
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "icmp_echo_enable_probe", |
|
.data = &init_net.ipv4.sysctl_icmp_echo_enable_probe, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE |
|
}, |
|
{ |
|
.procname = "icmp_echo_ignore_broadcasts", |
|
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "icmp_ignore_bogus_error_responses", |
|
.data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "icmp_errors_use_inbound_ifaddr", |
|
.data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "icmp_ratelimit", |
|
.data = &init_net.ipv4.sysctl_icmp_ratelimit, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_ms_jiffies, |
|
}, |
|
{ |
|
.procname = "icmp_ratemask", |
|
.data = &init_net.ipv4.sysctl_icmp_ratemask, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.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, |
|
}, |
|
#ifdef CONFIG_NET_L3_MASTER_DEV |
|
{ |
|
.procname = "raw_l3mdev_accept", |
|
.data = &init_net.ipv4.sysctl_raw_l3mdev_accept, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
#endif |
|
{ |
|
.procname = "tcp_ecn", |
|
.data = &init_net.ipv4.sysctl_tcp_ecn, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_ecn_fallback", |
|
.data = &init_net.ipv4.sysctl_tcp_ecn_fallback, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "ip_dynaddr", |
|
.data = &init_net.ipv4.sysctl_ip_dynaddr, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "ip_early_demux", |
|
.data = &init_net.ipv4.sysctl_ip_early_demux, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "udp_early_demux", |
|
.data = &init_net.ipv4.sysctl_udp_early_demux, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_udp_early_demux |
|
}, |
|
{ |
|
.procname = "tcp_early_demux", |
|
.data = &init_net.ipv4.sysctl_tcp_early_demux, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_tcp_early_demux |
|
}, |
|
{ |
|
.procname = "nexthop_compat_mode", |
|
.data = &init_net.ipv4.sysctl_nexthop_compat_mode, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "ip_default_ttl", |
|
.data = &init_net.ipv4.sysctl_ip_default_ttl, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = &ip_ttl_min, |
|
.extra2 = &ip_ttl_max, |
|
}, |
|
{ |
|
.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(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "ip_forward_use_pmtu", |
|
.data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "ip_forward_update_priority", |
|
.data = &init_net.ipv4.sysctl_ip_fwd_update_priority, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = ipv4_fwd_update_priority, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "ip_nonlocal_bind", |
|
.data = &init_net.ipv4.sysctl_ip_nonlocal_bind, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "ip_autobind_reuse", |
|
.data = &init_net.ipv4.sysctl_ip_autobind_reuse, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "fwmark_reflect", |
|
.data = &init_net.ipv4.sysctl_fwmark_reflect, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_fwmark_accept", |
|
.data = &init_net.ipv4.sysctl_tcp_fwmark_accept, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
#ifdef CONFIG_NET_L3_MASTER_DEV |
|
{ |
|
.procname = "tcp_l3mdev_accept", |
|
.data = &init_net.ipv4.sysctl_tcp_l3mdev_accept, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
#endif |
|
{ |
|
.procname = "tcp_mtu_probing", |
|
.data = &init_net.ipv4.sysctl_tcp_mtu_probing, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_base_mss", |
|
.data = &init_net.ipv4.sysctl_tcp_base_mss, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "tcp_min_snd_mss", |
|
.data = &init_net.ipv4.sysctl_tcp_min_snd_mss, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = &tcp_min_snd_mss_min, |
|
.extra2 = &tcp_min_snd_mss_max, |
|
}, |
|
{ |
|
.procname = "tcp_mtu_probe_floor", |
|
.data = &init_net.ipv4.sysctl_tcp_mtu_probe_floor, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = &tcp_min_snd_mss_min, |
|
.extra2 = &tcp_min_snd_mss_max, |
|
}, |
|
{ |
|
.procname = "tcp_probe_threshold", |
|
.data = &init_net.ipv4.sysctl_tcp_probe_threshold, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "tcp_probe_interval", |
|
.data = &init_net.ipv4.sysctl_tcp_probe_interval, |
|
.maxlen = sizeof(u32), |
|
.mode = 0644, |
|
.proc_handler = proc_douintvec_minmax, |
|
.extra2 = &u32_max_div_HZ, |
|
}, |
|
{ |
|
.procname = "igmp_link_local_mcast_reports", |
|
.data = &init_net.ipv4.sysctl_igmp_llm_reports, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "igmp_max_memberships", |
|
.data = &init_net.ipv4.sysctl_igmp_max_memberships, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "igmp_max_msf", |
|
.data = &init_net.ipv4.sysctl_igmp_max_msf, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
#ifdef CONFIG_IP_MULTICAST |
|
{ |
|
.procname = "igmp_qrv", |
|
.data = &init_net.ipv4.sysctl_igmp_qrv, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ONE |
|
}, |
|
#endif |
|
{ |
|
.procname = "tcp_congestion_control", |
|
.data = &init_net.ipv4.tcp_congestion_control, |
|
.mode = 0644, |
|
.maxlen = TCP_CA_NAME_MAX, |
|
.proc_handler = proc_tcp_congestion_control, |
|
}, |
|
{ |
|
.procname = "tcp_available_congestion_control", |
|
.maxlen = TCP_CA_BUF_MAX, |
|
.mode = 0444, |
|
.proc_handler = proc_tcp_available_congestion_control, |
|
}, |
|
{ |
|
.procname = "tcp_allowed_congestion_control", |
|
.maxlen = TCP_CA_BUF_MAX, |
|
.mode = 0644, |
|
.proc_handler = proc_allowed_congestion_control, |
|
}, |
|
{ |
|
.procname = "tcp_keepalive_time", |
|
.data = &init_net.ipv4.sysctl_tcp_keepalive_time, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_jiffies, |
|
}, |
|
{ |
|
.procname = "tcp_keepalive_probes", |
|
.data = &init_net.ipv4.sysctl_tcp_keepalive_probes, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_keepalive_intvl", |
|
.data = &init_net.ipv4.sysctl_tcp_keepalive_intvl, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_jiffies, |
|
}, |
|
{ |
|
.procname = "tcp_syn_retries", |
|
.data = &init_net.ipv4.sysctl_tcp_syn_retries, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = &tcp_syn_retries_min, |
|
.extra2 = &tcp_syn_retries_max |
|
}, |
|
{ |
|
.procname = "tcp_synack_retries", |
|
.data = &init_net.ipv4.sysctl_tcp_synack_retries, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
#ifdef CONFIG_SYN_COOKIES |
|
{ |
|
.procname = "tcp_syncookies", |
|
.data = &init_net.ipv4.sysctl_tcp_syncookies, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
#endif |
|
{ |
|
.procname = "tcp_migrate_req", |
|
.data = &init_net.ipv4.sysctl_tcp_migrate_req, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE |
|
}, |
|
{ |
|
.procname = "tcp_reordering", |
|
.data = &init_net.ipv4.sysctl_tcp_reordering, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_retries1", |
|
.data = &init_net.ipv4.sysctl_tcp_retries1, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra2 = &tcp_retr1_max |
|
}, |
|
{ |
|
.procname = "tcp_retries2", |
|
.data = &init_net.ipv4.sysctl_tcp_retries2, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_orphan_retries", |
|
.data = &init_net.ipv4.sysctl_tcp_orphan_retries, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_fin_timeout", |
|
.data = &init_net.ipv4.sysctl_tcp_fin_timeout, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_jiffies, |
|
}, |
|
{ |
|
.procname = "tcp_notsent_lowat", |
|
.data = &init_net.ipv4.sysctl_tcp_notsent_lowat, |
|
.maxlen = sizeof(unsigned int), |
|
.mode = 0644, |
|
.proc_handler = proc_douintvec, |
|
}, |
|
{ |
|
.procname = "tcp_tw_reuse", |
|
.data = &init_net.ipv4.sysctl_tcp_tw_reuse, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &two, |
|
}, |
|
{ |
|
.procname = "tcp_max_tw_buckets", |
|
.data = &init_net.ipv4.tcp_death_row.sysctl_max_tw_buckets, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_max_syn_backlog", |
|
.data = &init_net.ipv4.sysctl_max_syn_backlog, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_fastopen", |
|
.data = &init_net.ipv4.sysctl_tcp_fastopen, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec, |
|
}, |
|
{ |
|
.procname = "tcp_fastopen_key", |
|
.mode = 0600, |
|
.data = &init_net.ipv4.sysctl_tcp_fastopen, |
|
/* maxlen to print the list of keys in hex (*2), with dashes |
|
* separating doublewords and a comma in between keys. |
|
*/ |
|
.maxlen = ((TCP_FASTOPEN_KEY_LENGTH * |
|
2 * TCP_FASTOPEN_KEY_MAX) + |
|
(TCP_FASTOPEN_KEY_MAX * 5)), |
|
.proc_handler = proc_tcp_fastopen_key, |
|
}, |
|
{ |
|
.procname = "tcp_fastopen_blackhole_timeout_sec", |
|
.data = &init_net.ipv4.sysctl_tcp_fastopen_blackhole_timeout, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_tfo_blackhole_detect_timeout, |
|
.extra1 = SYSCTL_ZERO, |
|
}, |
|
#ifdef CONFIG_IP_ROUTE_MULTIPATH |
|
{ |
|
.procname = "fib_multipath_use_neigh", |
|
.data = &init_net.ipv4.sysctl_fib_multipath_use_neigh, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "fib_multipath_hash_policy", |
|
.data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_fib_multipath_hash_policy, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &three, |
|
}, |
|
{ |
|
.procname = "fib_multipath_hash_fields", |
|
.data = &init_net.ipv4.sysctl_fib_multipath_hash_fields, |
|
.maxlen = sizeof(u32), |
|
.mode = 0644, |
|
.proc_handler = proc_fib_multipath_hash_fields, |
|
.extra1 = SYSCTL_ONE, |
|
.extra2 = &fib_multipath_hash_fields_all_mask, |
|
}, |
|
#endif |
|
{ |
|
.procname = "ip_unprivileged_port_start", |
|
.maxlen = sizeof(int), |
|
.data = &init_net.ipv4.sysctl_ip_prot_sock, |
|
.mode = 0644, |
|
.proc_handler = ipv4_privileged_ports, |
|
}, |
|
#ifdef CONFIG_NET_L3_MASTER_DEV |
|
{ |
|
.procname = "udp_l3mdev_accept", |
|
.data = &init_net.ipv4.sysctl_udp_l3mdev_accept, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
#endif |
|
{ |
|
.procname = "tcp_sack", |
|
.data = &init_net.ipv4.sysctl_tcp_sack, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_window_scaling", |
|
.data = &init_net.ipv4.sysctl_tcp_window_scaling, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_timestamps", |
|
.data = &init_net.ipv4.sysctl_tcp_timestamps, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_early_retrans", |
|
.data = &init_net.ipv4.sysctl_tcp_early_retrans, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &four, |
|
}, |
|
{ |
|
.procname = "tcp_recovery", |
|
.data = &init_net.ipv4.sysctl_tcp_recovery, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_thin_linear_timeouts", |
|
.data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_slow_start_after_idle", |
|
.data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_retrans_collapse", |
|
.data = &init_net.ipv4.sysctl_tcp_retrans_collapse, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_stdurg", |
|
.data = &init_net.ipv4.sysctl_tcp_stdurg, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_rfc1337", |
|
.data = &init_net.ipv4.sysctl_tcp_rfc1337, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_abort_on_overflow", |
|
.data = &init_net.ipv4.sysctl_tcp_abort_on_overflow, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_fack", |
|
.data = &init_net.ipv4.sysctl_tcp_fack, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_max_reordering", |
|
.data = &init_net.ipv4.sysctl_tcp_max_reordering, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_dsack", |
|
.data = &init_net.ipv4.sysctl_tcp_dsack, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_app_win", |
|
.data = &init_net.ipv4.sysctl_tcp_app_win, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_adv_win_scale", |
|
.data = &init_net.ipv4.sysctl_tcp_adv_win_scale, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = &tcp_adv_win_scale_min, |
|
.extra2 = &tcp_adv_win_scale_max, |
|
}, |
|
{ |
|
.procname = "tcp_frto", |
|
.data = &init_net.ipv4.sysctl_tcp_frto, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_no_metrics_save", |
|
.data = &init_net.ipv4.sysctl_tcp_nometrics_save, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_no_ssthresh_metrics_save", |
|
.data = &init_net.ipv4.sysctl_tcp_no_ssthresh_metrics_save, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "tcp_moderate_rcvbuf", |
|
.data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_tso_win_divisor", |
|
.data = &init_net.ipv4.sysctl_tcp_tso_win_divisor, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_workaround_signed_windows", |
|
.data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_limit_output_bytes", |
|
.data = &init_net.ipv4.sysctl_tcp_limit_output_bytes, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_challenge_ack_limit", |
|
.data = &init_net.ipv4.sysctl_tcp_challenge_ack_limit, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec |
|
}, |
|
{ |
|
.procname = "tcp_min_tso_segs", |
|
.data = &init_net.ipv4.sysctl_tcp_min_tso_segs, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "tcp_min_rtt_wlen", |
|
.data = &init_net.ipv4.sysctl_tcp_min_rtt_wlen, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &one_day_secs |
|
}, |
|
{ |
|
.procname = "tcp_autocorking", |
|
.data = &init_net.ipv4.sysctl_tcp_autocorking, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "tcp_invalid_ratelimit", |
|
.data = &init_net.ipv4.sysctl_tcp_invalid_ratelimit, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_ms_jiffies, |
|
}, |
|
{ |
|
.procname = "tcp_pacing_ss_ratio", |
|
.data = &init_net.ipv4.sysctl_tcp_pacing_ss_ratio, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &thousand, |
|
}, |
|
{ |
|
.procname = "tcp_pacing_ca_ratio", |
|
.data = &init_net.ipv4.sysctl_tcp_pacing_ca_ratio, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &thousand, |
|
}, |
|
{ |
|
.procname = "tcp_wmem", |
|
.data = &init_net.ipv4.sysctl_tcp_wmem, |
|
.maxlen = sizeof(init_net.ipv4.sysctl_tcp_wmem), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "tcp_rmem", |
|
.data = &init_net.ipv4.sysctl_tcp_rmem, |
|
.maxlen = sizeof(init_net.ipv4.sysctl_tcp_rmem), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "tcp_comp_sack_delay_ns", |
|
.data = &init_net.ipv4.sysctl_tcp_comp_sack_delay_ns, |
|
.maxlen = sizeof(unsigned long), |
|
.mode = 0644, |
|
.proc_handler = proc_doulongvec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_comp_sack_slack_ns", |
|
.data = &init_net.ipv4.sysctl_tcp_comp_sack_slack_ns, |
|
.maxlen = sizeof(unsigned long), |
|
.mode = 0644, |
|
.proc_handler = proc_doulongvec_minmax, |
|
}, |
|
{ |
|
.procname = "tcp_comp_sack_nr", |
|
.data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
}, |
|
{ |
|
.procname = "tcp_reflect_tos", |
|
.data = &init_net.ipv4.sysctl_tcp_reflect_tos, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = SYSCTL_ONE, |
|
}, |
|
{ |
|
.procname = "udp_rmem_min", |
|
.data = &init_net.ipv4.sysctl_udp_rmem_min, |
|
.maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ONE |
|
}, |
|
{ |
|
.procname = "udp_wmem_min", |
|
.data = &init_net.ipv4.sysctl_udp_wmem_min, |
|
.maxlen = sizeof(init_net.ipv4.sysctl_udp_wmem_min), |
|
.mode = 0644, |
|
.proc_handler = proc_dointvec_minmax, |
|
.extra1 = SYSCTL_ONE |
|
}, |
|
{ |
|
.procname = "fib_notify_on_flag_change", |
|
.data = &init_net.ipv4.sysctl_fib_notify_on_flag_change, |
|
.maxlen = sizeof(u8), |
|
.mode = 0644, |
|
.proc_handler = proc_dou8vec_minmax, |
|
.extra1 = SYSCTL_ZERO, |
|
.extra2 = &two, |
|
}, |
|
{ } |
|
}; |
|
|
|
static __net_init int ipv4_sysctl_init_net(struct net *net) |
|
{ |
|
struct ctl_table *table; |
|
|
|
table = ipv4_net_table; |
|
if (!net_eq(net, &init_net)) { |
|
int i; |
|
|
|
table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
|
if (!table) |
|
goto err_alloc; |
|
|
|
for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) { |
|
if (table[i].data) { |
|
/* Update the variables to point into |
|
* the current struct net |
|
*/ |
|
table[i].data += (void *)net - (void *)&init_net; |
|
} else { |
|
/* Entries without data pointer are global; |
|
* Make them read-only in non-init_net ns |
|
*/ |
|
table[i].mode &= ~0222; |
|
} |
|
} |
|
} |
|
|
|
net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); |
|
if (!net->ipv4.ipv4_hdr) |
|
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_eq(net, &init_net)) |
|
kfree(table); |
|
err_alloc: |
|
return -ENOMEM; |
|
} |
|
|
|
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); |
|
} |
|
|
|
static __net_initdata struct pernet_operations ipv4_sysctl_ops = { |
|
.init = ipv4_sysctl_init_net, |
|
.exit = ipv4_sysctl_exit_net, |
|
}; |
|
|
|
static __init int sysctl_ipv4_init(void) |
|
{ |
|
struct ctl_table_header *hdr; |
|
|
|
hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table); |
|
if (!hdr) |
|
return -ENOMEM; |
|
|
|
if (register_pernet_subsys(&ipv4_sysctl_ops)) { |
|
unregister_net_sysctl_table(hdr); |
|
return -ENOMEM; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
__initcall(sysctl_ipv4_init);
|
|
|