1 files changed, 26 insertions, 14 deletions

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 24b3558b8e67..18ff5df7ec02 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -141,7 +141,11 @@ static const struct snmp_mib snmp6_udplite6_list[] = {
         SNMP_MIB_SENTINEL
 };
 
-static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **mib)
+/* can be called either with percpu mib (pcpumib != NULL),
+ * or shared one (smib != NULL)
+ */
+static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **pcpumib,
+                                     atomic_long_t *smib)
 {
         char name[32];
         int i;
@@ -158,14 +162,14 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **mib)
                 snprintf(name, sizeof(name), "Icmp6%s%s",
                         i & 0x100 ? "Out" : "In", p);
                 seq_printf(seq, "%-32s\t%lu\n", name,
-                        snmp_fold_field(mib, i));
+                        pcpumib ? snmp_fold_field(pcpumib, i) : atomic_long_read(smib + i));
         }
 
         /* print by number (nonzero only) - ICMPMsgStat format */
         for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
                 unsigned long val;
 
-                val = snmp_fold_field(mib, i);
+                val = pcpumib ? snmp_fold_field(pcpumib, i) : atomic_long_read(smib + i);
                 if (!val)
                         continue;
                 snprintf(name, sizeof(name), "Icmp6%sType%u",
@@ -174,14 +178,22 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **mib)
         }
 }
 
-static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **mib,
+/* 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,
+                                atomic_long_t *smib,
                                 const struct snmp_mib *itemlist)
 {
         int i;
+        unsigned long val;
 
-        for (i = 0; itemlist[i].name; i++)
-                seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
-                           snmp_fold_field(mib, itemlist[i].entry));
+        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);
+        }
 }
 
 static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib,
@@ -201,13 +213,13 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
         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,
-                            snmp6_icmp6_list);
+                            NULL, snmp6_icmp6_list);
         snmp6_seq_show_icmpv6msg(seq,
-                            (void __percpu **)net->mib.icmpv6msg_statistics);
+                            (void __percpu **)net->mib.icmpv6msg_statistics, NULL);
         snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
-                            snmp6_udp6_list);
+                            NULL, snmp6_udp6_list);
         snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6,
-                            snmp6_udplite6_list);
+                            NULL, snmp6_udplite6_list);
         return 0;
 }
 
@@ -229,11 +241,11 @@ 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_item(seq, (void __percpu **)idev->stats.ipv6,
+        snmp6_seq_show_item(seq, (void __percpu **)idev->stats.ipv6, NULL,
                             snmp6_ipstats_list);
-        snmp6_seq_show_item(seq, (void __percpu **)idev->stats.icmpv6,
+        snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
                             snmp6_icmp6_list);
-        snmp6_seq_show_icmpv6msg(seq, (void __percpu **)idev->stats.icmpv6msg);
+        snmp6_seq_show_icmpv6msg(seq, NULL, idev->stats.icmpv6msgdev->mibs);
         return 0;
 }