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authorJason Wang <jasowang@redhat.com>2021-04-23 11:18:03 +0800
committerPeter Maydell <peter.maydell@linaro.org>2021-04-23 11:11:28 +0100
commitbc38e31b4e0366f3a70c0939abde4c3dd6e0fa30 (patch)
treef8e330e2edb9005a327170cffa51cd0944673806 /include/net/net.h
parentb1cffefa1b163bce9aebc3416f562c1d3886eeaa (diff)
downloadfocaccia-qemu-bc38e31b4e0366f3a70c0939abde4c3dd6e0fa30.tar.gz
focaccia-qemu-bc38e31b4e0366f3a70c0939abde4c3dd6e0fa30.zip
net: check the existence of peer before trying to pad
There could be case that peer is NULL. This can happen when during
network device hot-add where net device needs to be added first. So
the patch check the existence of peer before trying to do the pad.

Fixes: 969e50b61a285 ("net: Pad short frames to minimum size before sending from SLiRP/TAP")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20210423031803.1479-1-jasowang@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/net/net.h')
-rw-r--r--include/net/net.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/net.h b/include/net/net.h
index eff24519d2..1ef536d771 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -241,4 +241,9 @@ uint32_t net_crc32_le(const uint8_t *p, int len);
     .offset     = vmstate_offset_macaddr(_state, _field),            \
 }
 
+static inline bool net_peer_needs_padding(NetClientState *nc)
+{
+  return nc->peer && !nc->peer->do_not_pad;
+}
+
 #endif