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[Qemu-devel] [PATCH 4/7] net: Prevent multiple slirp instances
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH 4/7] net: Prevent multiple slirp instances |
Date: |
Tue, 14 Apr 2009 19:29:55 +0200 |
User-agent: |
StGIT/0.14.2 |
The slirp stack is full of global variables which prevents instantiating
it more than once. Catch this during net_slirp_init to prevent more harm
later on.
Signed-off-by: Jan Kiszka <address@hidden>
---
net.c | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/net.c b/net.c
index 787f249..0486f7c 100644
--- a/net.c
+++ b/net.c
@@ -519,15 +519,27 @@ static void slirp_receive(void *opaque, const uint8_t
*buf, int size)
slirp_input(buf, size);
}
+static int slirp_in_use;
+
+static void net_slirp_cleanup(void *opaque)
+{
+ slirp_in_use = 0;
+}
+
static int net_slirp_init(VLANState *vlan, const char *model, const char *name)
{
+ if (slirp_in_use) {
+ /* slirp only supports a single instance so far */
+ return -1;
+ }
if (!slirp_inited) {
slirp_inited = 1;
slirp_init(slirp_restrict, slirp_ip);
}
slirp_vc = qemu_new_vlan_client(vlan, model, name,
- slirp_receive, NULL, NULL, NULL);
+ slirp_receive, NULL, net_slirp_cleanup,
NULL);
slirp_vc->info_str[0] = '\0';
+ slirp_in_use = 1;
return 0;
}
- [Qemu-devel] [PATCH 0/7] Various small networking improvements, Jan Kiszka, 2009/04/14
- [Qemu-devel] [PATCH 4/7] net: Prevent multiple slirp instances,
Jan Kiszka <=
- [Qemu-devel] [PATCH 1/7] net: Fix -net socket,listen, Jan Kiszka, 2009/04/14
- [Qemu-devel] [PATCH 2/7] net: Add VLAN client cleanup handler, Jan Kiszka, 2009/04/14
- [Qemu-devel] Re: [PATCH 2/7] net: Add VLAN client cleanup handler, Jan Kiszka, 2009/04/15
- [Qemu-devel] Re: [PATCH 2/7] net: Add VLAN client cleanup handler, Mark McLoughlin, 2009/04/15