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-rw-r--r--net/ipv6/proc.c199
1 files changed, 94 insertions, 105 deletions
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 51c3285b5d9b..73296f38c252 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/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
@@ -8,12 +9,7 @@
* except it reports the sockets in the INET6 address family.
*
* Authors: David S. Miller (davem@caip.rutgers.edu)
- * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
- *
- * 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.
+ * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
*/
#include <linux/socket.h>
#include <linux/net.h>
@@ -30,6 +26,11 @@
#include <net/transp_v6.h>
#include <net/ipv6.h>
+#define MAX4(a, b, c, d) \
+ MAX_T(u32, MAX_T(u32, a, b), MAX_T(u32, c, d))
+#define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
+ IPSTATS_MIB_MAX, ICMP_MIB_MAX)
+
static int sockstat6_seq_show(struct seq_file *seq, void *v)
{
struct net *net = seq->private;
@@ -42,24 +43,12 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v)
sock_prot_inuse_get(net, &udplitev6_prot));
seq_printf(seq, "RAW6: inuse %d\n",
sock_prot_inuse_get(net, &rawv6_prot));
- seq_printf(seq, "FRAG6: inuse %d memory %d\n",
- ip6_frag_nqueues(net), ip6_frag_mem(net));
+ seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
+ atomic_read(&net->ipv6.fqdir->rhashtable.nelems),
+ frag_mem_limit(net->ipv6.fqdir));
return 0;
}
-static int sockstat6_seq_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, sockstat6_seq_show);
-}
-
-static const struct file_operations sockstat6_seq_fops = {
- .owner = THIS_MODULE,
- .open = sockstat6_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release_net,
-};
-
static const struct snmp_mib snmp6_ipstats_list[] = {
/* ipv6 mib according to RFC 2465 */
SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
@@ -72,7 +61,7 @@ static const struct snmp_mib snmp6_ipstats_list[] = {
SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
- SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
+ SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
@@ -91,7 +80,11 @@ static const struct snmp_mib snmp6_ipstats_list[] = {
SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
+ SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
+ SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
+ SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
+ SNMP_MIB_ITEM("Ip6OutTransmits", IPSTATS_MIB_OUTPKTS),
};
static const struct snmp_mib snmp6_icmp6_list[] = {
@@ -101,29 +94,10 @@ static const struct snmp_mib snmp6_icmp6_list[] = {
SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
- SNMP_MIB_SENTINEL
+/* ICMP6_MIB_RATELIMITHOST needs to be last, see snmp6_dev_seq_show(). */
+ SNMP_MIB_ITEM("Icmp6OutRateLimitHost", ICMP6_MIB_RATELIMITHOST),
};
-/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
-static const char *const icmp6type2name[256] = {
- [ICMPV6_DEST_UNREACH] = "DestUnreachs",
- [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
- [ICMPV6_TIME_EXCEED] = "TimeExcds",
- [ICMPV6_PARAMPROB] = "ParmProblems",
- [ICMPV6_ECHO_REQUEST] = "Echos",
- [ICMPV6_ECHO_REPLY] = "EchoReplies",
- [ICMPV6_MGM_QUERY] = "GroupMembQueries",
- [ICMPV6_MGM_REPORT] = "GroupMembResponses",
- [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
- [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
- [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
- [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
- [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
- [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
- [NDISC_REDIRECT] = "Redirects",
-};
-
-
static const struct snmp_mib snmp6_udp6_list[] = {
SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
@@ -132,7 +106,8 @@ static const struct snmp_mib snmp6_udp6_list[] = {
SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
+ SNMP_MIB_ITEM("Udp6MemErrors", UDP_MIB_MEMERRORS),
};
static const struct snmp_mib snmp6_udplite6_list[] = {
@@ -143,7 +118,7 @@ static const struct snmp_mib snmp6_udplite6_list[] = {
SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
- SNMP_MIB_SENTINEL
+ SNMP_MIB_ITEM("UdpLite6MemErrors", UDP_MIB_MEMERRORS),
};
static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
@@ -153,11 +128,31 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
/* print by name -- deprecated items */
for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
+ const char *p = NULL;
int icmptype;
- const char *p;
+
+#define CASE(TYP, STR) case TYP: p = STR; break;
icmptype = i & 0xff;
- p = icmp6type2name[icmptype];
+ switch (icmptype) {
+/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
+ CASE(ICMPV6_DEST_UNREACH, "DestUnreachs")
+ CASE(ICMPV6_PKT_TOOBIG, "PktTooBigs")
+ CASE(ICMPV6_TIME_EXCEED, "TimeExcds")
+ CASE(ICMPV6_PARAMPROB, "ParmProblems")
+ CASE(ICMPV6_ECHO_REQUEST, "Echos")
+ CASE(ICMPV6_ECHO_REPLY, "EchoReplies")
+ CASE(ICMPV6_MGM_QUERY, "GroupMembQueries")
+ CASE(ICMPV6_MGM_REPORT, "GroupMembResponses")
+ CASE(ICMPV6_MGM_REDUCTION, "GroupMembReductions")
+ CASE(ICMPV6_MLD2_REPORT, "MLDv2Reports")
+ CASE(NDISC_ROUTER_ADVERTISEMENT, "RouterAdvertisements")
+ CASE(NDISC_ROUTER_SOLICITATION, "RouterSolicits")
+ CASE(NDISC_NEIGHBOUR_ADVERTISEMENT, "NeighborAdvertisements")
+ CASE(NDISC_NEIGHBOUR_SOLICITATION, "NeighborSolicits")
+ CASE(NDISC_REDIRECT, "Redirects")
+ }
+#undef CASE
if (!p) /* don't print un-named types here */
continue;
snprintf(name, sizeof(name), "Icmp6%s%s",
@@ -182,86 +177,81 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
/* can be called either with percpu mib (pcpumib != NULL),
* or shared one (smib != NULL)
*/
-static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib,
+static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib,
atomic_long_t *smib,
- const struct snmp_mib *itemlist)
+ const struct snmp_mib *itemlist,
+ int cnt)
{
+ unsigned long buff[SNMP_MIB_MAX];
int i;
- unsigned long val;
- for (i = 0; itemlist[i].name; i++) {
- val = pcpumib ?
- snmp_fold_field(pcpumib, itemlist[i].entry) :
- atomic_long_read(smib + itemlist[i].entry);
- seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val);
+ if (pcpumib) {
+ memset(buff, 0, sizeof(unsigned long) * cnt);
+
+ snmp_get_cpu_field_batch_cnt(buff, itemlist, cnt, pcpumib);
+ for (i = 0; i < cnt; i++)
+ seq_printf(seq, "%-32s\t%lu\n",
+ itemlist[i].name, buff[i]);
+ } else {
+ for (i = 0; i < cnt; i++)
+ seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
+ atomic_long_read(smib + itemlist[i].entry));
}
}
-static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib,
- const struct snmp_mib *itemlist, size_t syncpoff)
+static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
+ const struct snmp_mib *itemlist,
+ int cnt, size_t syncpoff)
{
+ u64 buff64[SNMP_MIB_MAX];
int i;
- for (i = 0; itemlist[i].name; i++)
- seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name,
- snmp_fold_field64(mib, itemlist[i].entry, syncpoff));
+ memset(buff64, 0, sizeof(u64) * cnt);
+
+ snmp_get_cpu_field64_batch_cnt(buff64, itemlist, cnt, mib, syncpoff);
+ for (i = 0; i < cnt; i++)
+ seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
}
static int snmp6_seq_show(struct seq_file *seq, void *v)
{
struct net *net = (struct net *)seq->private;
- snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics,
- snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
- snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
- NULL, snmp6_icmp6_list);
+ snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
+ snmp6_ipstats_list,
+ ARRAY_SIZE(snmp6_ipstats_list),
+ offsetof(struct ipstats_mib, syncp));
+ snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
+ NULL, snmp6_icmp6_list,
+ ARRAY_SIZE(snmp6_icmp6_list));
snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
- snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
- NULL, snmp6_udp6_list);
- snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6,
- NULL, snmp6_udplite6_list);
+ snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
+ NULL, snmp6_udp6_list,
+ ARRAY_SIZE(snmp6_udp6_list));
+ snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
+ NULL, snmp6_udplite6_list,
+ ARRAY_SIZE(snmp6_udplite6_list));
return 0;
}
-static int snmp6_seq_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, snmp6_seq_show);
-}
-
-static const struct file_operations snmp6_seq_fops = {
- .owner = THIS_MODULE,
- .open = snmp6_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release_net,
-};
-
static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
{
struct inet6_dev *idev = (struct inet6_dev *)seq->private;
seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
- snmp6_seq_show_item64(seq, (void __percpu **)idev->stats.ipv6,
- snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
+ snmp6_seq_show_item64(seq, idev->stats.ipv6,
+ snmp6_ipstats_list,
+ ARRAY_SIZE(snmp6_ipstats_list),
+ offsetof(struct ipstats_mib, syncp));
+
+ /* Per idev icmp stats do not have ICMP6_MIB_RATELIMITHOST */
snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
- snmp6_icmp6_list);
+ snmp6_icmp6_list, ARRAY_SIZE(snmp6_icmp6_list) - 1);
+
snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
return 0;
}
-static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
-{
- return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode));
-}
-
-static const struct file_operations snmp6_dev_seq_fops = {
- .owner = THIS_MODULE,
- .open = snmp6_dev_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
int snmp6_register_dev(struct inet6_dev *idev)
{
struct proc_dir_entry *p;
@@ -274,9 +264,8 @@ int snmp6_register_dev(struct inet6_dev *idev)
if (!net->mib.proc_net_devsnmp6)
return -ENOENT;
- p = proc_create_data(idev->dev->name, S_IRUGO,
- net->mib.proc_net_devsnmp6,
- &snmp6_dev_seq_fops, idev);
+ p = proc_create_single_data(idev->dev->name, 0444,
+ net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev);
if (!p)
return -ENOMEM;
@@ -298,11 +287,12 @@ int snmp6_unregister_dev(struct inet6_dev *idev)
static int __net_init ipv6_proc_init_net(struct net *net)
{
- if (!proc_create("sockstat6", S_IRUGO, net->proc_net,
- &sockstat6_seq_fops))
+ if (!proc_create_net_single("sockstat6", 0444, net->proc_net,
+ sockstat6_seq_show, NULL))
return -ENOMEM;
- if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
+ if (!proc_create_net_single("snmp6", 0444, net->proc_net,
+ snmp6_seq_show, NULL))
goto proc_snmp6_fail;
net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
@@ -338,4 +328,3 @@ void ipv6_misc_proc_exit(void)
{
unregister_pernet_subsys(&ipv6_proc_ops);
}
-
generated by cgit (git 2.34.1) at 2025-12-22 00:33:53 +0000