net: Untangle nested qemu_send_packet (Jan Kiszka)

Queue packets that are send during an ongoing packet delivery. This
ensures that packets will always arrive in their logical order at each
client of a VLAN. Currently, slirp generates such immediate relies, and
e.g. packet-sniffing clients on the same VLAN may get confused.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7203 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 11 insertions, 0 deletions

diff --git a/net.h b/net.h
index 413f7054b2..fe5ece7c0e 100644
--- a/net.h
+++ b/net.h
@@ -29,11 +29,22 @@ struct VLANClientState {
     char info_str[256];
 };
 
+typedef struct VLANPacket VLANPacket;
+
+struct VLANPacket {
+    struct VLANPacket *next;
+    VLANClientState *sender;
+    int size;
+    uint8_t data[0];
+};
+
 struct VLANState {
     int id;
     VLANClientState *first_client;
     struct VLANState *next;
     unsigned int nb_guest_devs, nb_host_devs;
+    VLANPacket *send_queue;
+    int delivering;
 };
 
 VLANState *qemu_find_vlan(int id);