From bc38e31b4e0366f3a70c0939abde4c3dd6e0fa30 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Fri, 23 Apr 2021 11:18:03 +0800 Subject: 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 Reviewed-by: Bin Meng Reviewed-by: Stefan Weil Message-id: 20210423031803.1479-1-jasowang@redhat.com Signed-off-by: Peter Maydell --- include/net/net.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') 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 -- cgit v1.2.3-55-g7522