diff mbox

[RFC,v2,3/4] net: model specific announcing support

Message ID 20111022053857.21526.82999.stgit@dhcp-8-146.nay.redhat.com
State RFC, archived
Delegated to: David Miller
Headers show

Commit Message

Jason Wang Oct. 22, 2011, 5:38 a.m. UTC 
This patch introduce a function pointer in NetClientInfo which is
called during self announcement to do the model specific announcement
such as sending gratuitous packet. Previous method is kept when model
specific announcing fails or without it.

The first user would be virtio-net.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 net.h    |    2 ++
 savevm.c |    8 +++++---
 2 files changed, 7 insertions(+), 3 deletions(-)


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diff mbox

Patch

diff --git a/net.h b/net.h
index 4943d4b..1845f01 100644
--- a/net.h
+++ b/net.h
@@ -46,6 +46,7 @@  typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
 typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
 typedef void (NetCleanup) (VLANClientState *);
 typedef void (LinkStatusChanged)(VLANClientState *);
+typedef int (NetAnnounce)(VLANClientState *);
 
 typedef struct NetClientInfo {
     net_client_type type;
@@ -57,6 +58,7 @@  typedef struct NetClientInfo {
     NetCleanup *cleanup;
     LinkStatusChanged *link_status_changed;
     NetPoll *poll;
+    NetAnnounce *announce;
 } NetClientInfo;
 
 struct VLANClientState {
diff --git a/savevm.c b/savevm.c
index 8293ee6..de6a01a 100644
--- a/savevm.c
+++ b/savevm.c
@@ -89,10 +89,12 @@  static void qemu_announce_self_iter(NICState *nic, void *opaque)
 {
     uint8_t buf[60];
     int len;
+    NetAnnounce *func = nic->nc.info->announce;
 
-    len = announce_self_create(buf, nic->conf->macaddr.a);
-
-    qemu_send_packet_raw(&nic->nc, buf, len);
+    if (func == NULL || func(&nic->nc) != 0) {
+        len = announce_self_create(buf, nic->conf->macaddr.a);
+        qemu_send_packet_raw(&nic->nc, buf, len);
+    }
 }