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From 527029312cbe37c0285240943ad02352d64d403d Mon Sep 17 00:00:00 2001
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From: Petr Mensik <pemensik@redhat.com>
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Date: Tue, 9 Jul 2019 14:05:59 +0200
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Subject: [PATCH 3/5] Cleanup interfaces no longer available
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Clean addresses and interfaces not found after enumerate. Free unused
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records to speed up checking active interfaces and reduce used memory.
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---
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src/network.c | 32 ++++++++++++++++++++++++++++++--
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1 file changed, 30 insertions(+), 2 deletions(-)
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diff --git a/src/network.c b/src/network.c
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index f247811..d6d4b01 100644
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--- a/src/network.c
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+++ b/src/network.c
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@@ -553,7 +553,30 @@ static int iface_allowed_v4(struct in_addr local, int if_index, char *label,
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return iface_allowed((struct iface_param *)vparam, if_index, label, &addr, netmask, prefix, 0);
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}
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-
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+
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+/*
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+ * Clean old interfaces no longer found.
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+ */
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+static void clean_interfaces()
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+{
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+ struct irec *iface;
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+ struct irec **up = &daemon->interfaces;
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+
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+ for (iface = *up; iface; iface = *up)
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+ {
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+ if (!iface->found && !iface->done)
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+ {
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+ *up = iface->next;
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+ free(iface->name);
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+ free(iface);
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+ }
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+ else
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+ {
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+ up = &iface->next;
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+ }
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+ }
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+}
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+
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int enumerate_interfaces(int reset)
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{
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static struct addrlist *spare = NULL;
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@@ -653,6 +676,7 @@ int enumerate_interfaces(int reset)
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in OPT_CLEVERBIND mode, that at listener will just disappear after
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a call to enumerate_interfaces, this is checked OK on all calls. */
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struct listener *l, *tmp, **up;
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+ int freed = 0;
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for (up = &daemon->listeners, l = daemon->listeners; l; l = tmp)
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{
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@@ -682,10 +706,14 @@ int enumerate_interfaces(int reset)
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close(l->tftpfd);
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free(l);
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+ freed = 1;
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}
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}
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+
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+ if (freed)
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+ clean_interfaces();
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}
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-
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+
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errno = errsave;
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spare = param.spare;
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--
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2.20.1
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