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-rw-r--r--net/ipv4/proc.c160
1 files changed, 102 insertions, 58 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index c3610b37bb4c..974afc4ecbe2 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
@@ -25,17 +26,14 @@
* split functions for more readibility.
* Andi Kleen : Add support for /proc/net/netstat
* Arnaldo C. Melo : Convert to seq_file
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/types.h>
#include <net/net_namespace.h>
#include <net/icmp.h>
#include <net/protocol.h>
#include <net/tcp.h>
+#include <net/mptcp.h>
+#include <net/proto_memory.h>
#include <net/udp.h>
#include <net/udplite.h>
#include <linux/bottom_half.h>
@@ -46,7 +44,7 @@
#include <net/sock.h>
#include <net/raw.h>
-#define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX)
+#define TCPUDP_MIB_MAX MAX_T(u32, UDP_MIB_MAX, TCP_MIB_MAX)
/*
* Report socket allocation statistics [mea@utu.fi]
@@ -56,14 +54,14 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
struct net *net = seq->private;
int orphans, sockets;
- orphans = percpu_counter_sum_positive(&tcp_orphan_count);
+ orphans = tcp_orphan_count_sum();
sockets = proto_sockets_allocated_sum_positive(&tcp_prot);
socket_seq_show(seq);
seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
sock_prot_inuse_get(net, &tcp_prot), orphans,
- atomic_read(&net->ipv4.tcp_death_row.tw_count), sockets,
- proto_memory_allocated(&tcp_prot));
+ refcount_read(&net->ipv4.tcp_death_row.tw_refcount) - 1,
+ sockets, proto_memory_allocated(&tcp_prot));
seq_printf(seq, "UDP: inuse %d mem %ld\n",
sock_prot_inuse_get(net, &udp_prot),
proto_memory_allocated(&udp_prot));
@@ -72,8 +70,8 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "RAW: inuse %d\n",
sock_prot_inuse_get(net, &raw_prot));
seq_printf(seq, "FRAG: inuse %u memory %lu\n",
- atomic_read(&net->ipv4.frags.rhashtable.nelems),
- frag_mem_limit(&net->ipv4.frags));
+ atomic_read(&net->ipv4.fqdir->rhashtable.nelems),
+ frag_mem_limit(net->ipv4.fqdir));
return 0;
}
@@ -86,7 +84,7 @@ static const struct snmp_mib snmp4_ipstats_list[] = {
SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
- SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
+ SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
@@ -96,7 +94,7 @@ static const struct snmp_mib snmp4_ipstats_list[] = {
SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("OutTransmits", IPSTATS_MIB_OUTPKTS),
};
/* Following items are displayed in /proc/net/netstat */
@@ -120,7 +118,6 @@ static const struct snmp_mib snmp4_ipextstats_list[] = {
SNMP_MIB_ITEM("InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
SNMP_MIB_ITEM("InCEPkts", IPSTATS_MIB_CEPKTS),
SNMP_MIB_ITEM("ReasmOverlaps", IPSTATS_MIB_REASM_OVERLAPS),
- SNMP_MIB_SENTINEL
};
static const struct {
@@ -158,7 +155,6 @@ static const struct snmp_mib snmp4_tcp_list[] = {
SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS),
- SNMP_MIB_SENTINEL
};
static const struct snmp_mib snmp4_udp_list[] = {
@@ -170,7 +166,7 @@ static const struct snmp_mib snmp4_udp_list[] = {
SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS),
SNMP_MIB_ITEM("IgnoredMulti", UDP_MIB_IGNOREDMULTI),
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("MemErrors", UDP_MIB_MEMERRORS),
};
static const struct snmp_mib snmp4_net_list[] = {
@@ -189,6 +185,10 @@ static const struct snmp_mib snmp4_net_list[] = {
SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
+ SNMP_MIB_ITEM("BeyondWindow", LINUX_MIB_BEYOND_WINDOW),
+ SNMP_MIB_ITEM("TSEcrRejected", LINUX_MIB_TSECRREJECTED),
+ SNMP_MIB_ITEM("PAWSOldAck", LINUX_MIB_PAWS_OLD_ACK),
+ SNMP_MIB_ITEM("PAWSTimewait", LINUX_MIB_PAWS_TW_REJECTED),
SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
@@ -291,7 +291,20 @@ static const struct snmp_mib snmp4_net_list[] = {
SNMP_MIB_ITEM("TCPAckCompressed", LINUX_MIB_TCPACKCOMPRESSED),
SNMP_MIB_ITEM("TCPZeroWindowDrop", LINUX_MIB_TCPZEROWINDOWDROP),
SNMP_MIB_ITEM("TCPRcvQDrop", LINUX_MIB_TCPRCVQDROP),
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("TCPWqueueTooBig", LINUX_MIB_TCPWQUEUETOOBIG),
+ SNMP_MIB_ITEM("TCPFastOpenPassiveAltKey", LINUX_MIB_TCPFASTOPENPASSIVEALTKEY),
+ SNMP_MIB_ITEM("TcpTimeoutRehash", LINUX_MIB_TCPTIMEOUTREHASH),
+ SNMP_MIB_ITEM("TcpDuplicateDataRehash", LINUX_MIB_TCPDUPLICATEDATAREHASH),
+ SNMP_MIB_ITEM("TCPDSACKRecvSegs", LINUX_MIB_TCPDSACKRECVSEGS),
+ SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS),
+ SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS),
+ SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE),
+ SNMP_MIB_ITEM("TCPPLBRehash", LINUX_MIB_TCPPLBREHASH),
+ SNMP_MIB_ITEM("TCPAORequired", LINUX_MIB_TCPAOREQUIRED),
+ SNMP_MIB_ITEM("TCPAOBad", LINUX_MIB_TCPAOBAD),
+ SNMP_MIB_ITEM("TCPAOKeyNotFound", LINUX_MIB_TCPAOKEYNOTFOUND),
+ SNMP_MIB_ITEM("TCPAOGood", LINUX_MIB_TCPAOGOOD),
+ SNMP_MIB_ITEM("TCPAODroppedIcmps", LINUX_MIB_TCPAODROPPEDICMPS),
};
static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
@@ -346,7 +359,7 @@ static void icmp_put(struct seq_file *seq)
seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors");
for (i = 0; icmpmibmap[i].name; i++)
seq_printf(seq, " In%s", icmpmibmap[i].name);
- seq_puts(seq, " OutMsgs OutErrors");
+ seq_puts(seq, " OutMsgs OutErrors OutRateLimitGlobal OutRateLimitHost");
for (i = 0; icmpmibmap[i].name; i++)
seq_printf(seq, " Out%s", icmpmibmap[i].name);
seq_printf(seq, "\nIcmp: %lu %lu %lu",
@@ -356,9 +369,11 @@ static void icmp_put(struct seq_file *seq)
for (i = 0; icmpmibmap[i].name; i++)
seq_printf(seq, " %lu",
atomic_long_read(ptr + icmpmibmap[i].index));
- seq_printf(seq, " %lu %lu",
+ seq_printf(seq, " %lu %lu %lu %lu",
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
- snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
+ snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS),
+ snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_RATELIMITGLOBAL),
+ snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_RATELIMITHOST));
for (i = 0; icmpmibmap[i].name; i++)
seq_printf(seq, " %lu",
atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
@@ -369,25 +384,26 @@ static void icmp_put(struct seq_file *seq)
*/
static int snmp_seq_show_ipstats(struct seq_file *seq, void *v)
{
+ const int cnt = ARRAY_SIZE(snmp4_ipstats_list);
+ u64 buff64[ARRAY_SIZE(snmp4_ipstats_list)];
struct net *net = seq->private;
- u64 buff64[IPSTATS_MIB_MAX];
int i;
- memset(buff64, 0, IPSTATS_MIB_MAX * sizeof(u64));
+ memset(buff64, 0, sizeof(buff64));
seq_puts(seq, "Ip: Forwarding DefaultTTL");
- for (i = 0; snmp4_ipstats_list[i].name; i++)
+ for (i = 0; i < cnt; i++)
seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
seq_printf(seq, "\nIp: %d %d",
- IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
- net->ipv4.sysctl_ip_default_ttl);
+ IPV4_DEVCONF_ALL_RO(net, FORWARDING) ? 1 : 2,
+ READ_ONCE(net->ipv4.sysctl_ip_default_ttl));
BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
- snmp_get_cpu_field64_batch(buff64, snmp4_ipstats_list,
- net->mib.ip_statistics,
- offsetof(struct ipstats_mib, syncp));
- for (i = 0; snmp4_ipstats_list[i].name; i++)
+ snmp_get_cpu_field64_batch_cnt(buff64, snmp4_ipstats_list, cnt,
+ net->mib.ip_statistics,
+ offsetof(struct ipstats_mib, syncp));
+ for (i = 0; i < cnt; i++)
seq_printf(seq, " %llu", buff64[i]);
return 0;
@@ -395,20 +411,23 @@ static int snmp_seq_show_ipstats(struct seq_file *seq, void *v)
static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v)
{
+ const int udp_cnt = ARRAY_SIZE(snmp4_udp_list);
+ const int tcp_cnt = ARRAY_SIZE(snmp4_tcp_list);
unsigned long buff[TCPUDP_MIB_MAX];
struct net *net = seq->private;
int i;
- memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
+ memset(buff, 0, tcp_cnt * sizeof(unsigned long));
seq_puts(seq, "\nTcp:");
- for (i = 0; snmp4_tcp_list[i].name; i++)
+ for (i = 0; i < tcp_cnt; i++)
seq_printf(seq, " %s", snmp4_tcp_list[i].name);
seq_puts(seq, "\nTcp:");
- snmp_get_cpu_field_batch(buff, snmp4_tcp_list,
- net->mib.tcp_statistics);
- for (i = 0; snmp4_tcp_list[i].name; i++) {
+ snmp_get_cpu_field_batch_cnt(buff, snmp4_tcp_list,
+ tcp_cnt,
+ net->mib.tcp_statistics);
+ for (i = 0; i < tcp_cnt; i++) {
/* MaxConn field is signed, RFC 2012 */
if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
seq_printf(seq, " %ld", buff[i]);
@@ -416,27 +435,29 @@ static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v)
seq_printf(seq, " %lu", buff[i]);
}
- memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
+ memset(buff, 0, udp_cnt * sizeof(unsigned long));
- snmp_get_cpu_field_batch(buff, snmp4_udp_list,
- net->mib.udp_statistics);
+ snmp_get_cpu_field_batch_cnt(buff, snmp4_udp_list,
+ udp_cnt,
+ net->mib.udp_statistics);
seq_puts(seq, "\nUdp:");
- for (i = 0; snmp4_udp_list[i].name; i++)
+ for (i = 0; i < udp_cnt; i++)
seq_printf(seq, " %s", snmp4_udp_list[i].name);
seq_puts(seq, "\nUdp:");
- for (i = 0; snmp4_udp_list[i].name; i++)
+ for (i = 0; i < udp_cnt; i++)
seq_printf(seq, " %lu", buff[i]);
- memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
+ memset(buff, 0, udp_cnt * sizeof(unsigned long));
/* the UDP and UDP-Lite MIBs are the same */
seq_puts(seq, "\nUdpLite:");
- snmp_get_cpu_field_batch(buff, snmp4_udp_list,
- net->mib.udplite_statistics);
- for (i = 0; snmp4_udp_list[i].name; i++)
+ snmp_get_cpu_field_batch_cnt(buff, snmp4_udp_list,
+ udp_cnt,
+ net->mib.udplite_statistics);
+ for (i = 0; i < udp_cnt; i++)
seq_printf(seq, " %s", snmp4_udp_list[i].name);
seq_puts(seq, "\nUdpLite:");
- for (i = 0; snmp4_udp_list[i].name; i++)
+ for (i = 0; i < udp_cnt; i++)
seq_printf(seq, " %lu", buff[i]);
seq_putc(seq, '\n');
@@ -460,31 +481,54 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
*/
static int netstat_seq_show(struct seq_file *seq, void *v)
{
- int i;
+ const int ip_cnt = ARRAY_SIZE(snmp4_ipextstats_list);
+ const int tcp_cnt = ARRAY_SIZE(snmp4_net_list);
struct net *net = seq->private;
+ unsigned long *buff;
+ int i;
seq_puts(seq, "TcpExt:");
- for (i = 0; snmp4_net_list[i].name; i++)
+ for (i = 0; i < tcp_cnt; i++)
seq_printf(seq, " %s", snmp4_net_list[i].name);
seq_puts(seq, "\nTcpExt:");
- for (i = 0; snmp4_net_list[i].name; i++)
- seq_printf(seq, " %lu",
- snmp_fold_field(net->mib.net_statistics,
- snmp4_net_list[i].entry));
-
+ buff = kzalloc(max(tcp_cnt * sizeof(long), ip_cnt * sizeof(u64)),
+ GFP_KERNEL);
+ if (buff) {
+ snmp_get_cpu_field_batch_cnt(buff, snmp4_net_list, tcp_cnt,
+ net->mib.net_statistics);
+ for (i = 0; i < tcp_cnt; i++)
+ seq_printf(seq, " %lu", buff[i]);
+ } else {
+ for (i = 0; i < tcp_cnt; i++)
+ seq_printf(seq, " %lu",
+ snmp_fold_field(net->mib.net_statistics,
+ snmp4_net_list[i].entry));
+ }
seq_puts(seq, "\nIpExt:");
- for (i = 0; snmp4_ipextstats_list[i].name; i++)
+ for (i = 0; i < ip_cnt; i++)
seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
seq_puts(seq, "\nIpExt:");
- for (i = 0; snmp4_ipextstats_list[i].name; i++)
- seq_printf(seq, " %llu",
- snmp_fold_field64(net->mib.ip_statistics,
- snmp4_ipextstats_list[i].entry,
- offsetof(struct ipstats_mib, syncp)));
-
+ if (buff) {
+ u64 *buff64 = (u64 *)buff;
+
+ memset(buff64, 0, ip_cnt * sizeof(u64));
+ snmp_get_cpu_field64_batch_cnt(buff64, snmp4_ipextstats_list, ip_cnt,
+ net->mib.ip_statistics,
+ offsetof(struct ipstats_mib, syncp));
+ for (i = 0; i < ip_cnt; i++)
+ seq_printf(seq, " %llu", buff64[i]);
+ } else {
+ for (i = 0; i < ip_cnt; i++)
+ seq_printf(seq, " %llu",
+ snmp_fold_field64(net->mib.ip_statistics,
+ snmp4_ipextstats_list[i].entry,
+ offsetof(struct ipstats_mib, syncp)));
+ }
+ kfree(buff);
seq_putc(seq, '\n');
+ mptcp_seq_show(seq);
return 0;
}
generated by cgit (git 2.34.1) at 2025-12-22 11:20:00 +0000