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collectd: fix snmp6 not showing all interfaces 

Getifaddrs() is not working all the time (e.g. wireguard interfaces).
Instead we use if_nameindex() syscall as suggested in:
 https://stackoverflow.com/a/45796495/8474618

Signed-off-by: Nick Hainke <vincent@systemli.org>
This commit is contained in:
Nick Hainke 2021-01-25 21:22:19 +01:00
parent d92f087340
commit 922e5b1a8b
2 changed files with 13 additions and 11 deletions
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2
utils/collectd/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=collectd
PKG_VERSION:=5.12.0
PKG_RELEASE:=5
PKG_RELEASE:=6
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
PKG_SOURCE_URL:=https://collectd.org/files/ \

22
utils/collectd/patches/931-snmp6-add-ipv6-statistics.patch
View File

@ -90,7 +90,7 @@ Signed-off-by: Nick Hainke <vincent@systemli.org>
# Port "8125"
--- /dev/null
+++ b/src/snmp6.c
@@ -0,0 +1,133 @@
@@ -0,0 +1,135 @@
+/*
+ This Plugin is based opn the interface.c Plugin.
+*/
@ -202,19 +202,21 @@ Signed-off-by: Nick Hainke <vincent@systemli.org>
+#ifndef HAVE_IFADDRS_H
+ return -1;
+#else
+ struct ifaddrs *addrs,*tmp;
+
+ getifaddrs(&addrs);
+ tmp = addrs;
+ // getifaddrs is not working all the time (e.g. wireguard interfaces)
+ // instead we use if_nameindex() syscall as suggested in:
+ // https://stackoverflow.com/a/45796495/8474618
+ struct if_nameindex *if_nidxs, *intf;
+
+ while (tmp)
+ {
+ if (tmp->ifa_addr && tmp->ifa_addr->sa_family == AF_PACKET)
+ snmp_read(tmp->ifa_name);
+ tmp = tmp->ifa_next;
+ if_nidxs = if_nameindex();
+
+ if (if_nidxs != NULL) {
+ for (intf = if_nidxs; intf->if_index != 0 || intf->if_name != NULL; intf++) {
+ snmp_read(intf->if_name);
+ }
+ if_freenameindex(if_nidxs);
+ }
+
+ freeifaddrs(addrs);
+ snmp_read("all");
+ return 0;
+#endif