[PATCH] nwfilter: Remove error report in virNWFilterDHCPSnoopEnd

[Stefan Berger <stefanb@xxxxxxxxxxxxxxxxxx>]

Remove error reporting when calling the virNWFilterDHCPSnoopEnd
function with an interface for which no thread is snooping traffic.

Document the usage of this function.

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxxxxxxx>

---
 src/nwfilter/nwfilter_dhcpsnoop.c |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

Index: libvirt/src/nwfilter/nwfilter_dhcpsnoop.c
===================================================================
--- libvirt.orig/src/nwfilter/nwfilter_dhcpsnoop.c
+++ libvirt/src/nwfilter/nwfilter_dhcpsnoop.c
@@ -2117,6 +2117,16 @@ err_exit:
     return -1;
 }

+/**
+ * End a DHCP snoop thread on the given interface or end all
+ * DHCP snoop threads.
+ *
+ * @ifname: Name of an interface or NULL to stop all snoop threads
+ *
+ * It is not an error to call this function with an interface name
+ * for which no thread is snooping traffic. In this case the call will
+ * be a no-op.
+ */
 void
 virNWFilterDHCPSnoopEnd(const char *ifname)
 {
@@ -2130,11 +2140,8 @@ virNWFilterDHCPSnoopEnd(const char *ifna
     if (ifname) {
         ifkey = (char *)virHashLookup(virNWFilterSnoopState.ifnameToKey,
                                       ifname);
-        if (!ifkey) {
-            virReportError(VIR_ERR_INTERNAL_ERROR,
-                           _("ifname \"%s\" not in key map"), ifname);
+        if (!ifkey)
             goto cleanup;
-        }

ignore_value(virHashRemoveEntry(virNWFilterSnoopState.ifnameToKey,
                                         ifname));

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