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net: Strip virtio-net header when dumping

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filter-dump specifiees Ethernet as PCAP LinkType, which does not expect
virtio-net header. Having virtio-net header in such PCAP file breaks
PCAP unconsumable. Unfortunately currently there is no LinkType for
virtio-net so for now strip virtio-net header to convert the output to
Ethernet.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Akihiko Odaki
2023-02-23 19:20:05 +09:00
committed by Jason Wang
parent d921db0ae9
commit 481c52320a
4 changed files with 47 additions and 4 deletions
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18
net/net.c
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@@ -513,6 +513,15 @@ bool qemu_has_vnet_hdr_len(NetClientState *nc, int len)
return nc->info->has_vnet_hdr_len(nc, len);
}
bool qemu_get_using_vnet_hdr(NetClientState *nc)
{
if (!nc || !nc->info->get_using_vnet_hdr) {
return false;
}
return nc->info->get_using_vnet_hdr(nc);
}
void qemu_using_vnet_hdr(NetClientState *nc, bool enable)
{
if (!nc || !nc->info->using_vnet_hdr) {
@@ -532,6 +541,15 @@ void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo);
}
int qemu_get_vnet_hdr_len(NetClientState *nc)
{
if (!nc || !nc->info->get_vnet_hdr_len) {
return 0;
}
return nc->info->get_vnet_hdr_len(nc);
}
void qemu_set_vnet_hdr_len(NetClientState *nc, int len)
{
if (!nc || !nc->info->set_vnet_hdr_len) {