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Tsirkin" , Luigi Rizzo , Giuseppe Lettieri , Vincenzo Maffione , Andrew Melnychenko , Yuri Benditovich Cc: qemu-devel@nongnu.org, Akihiko Odaki X-Mailer: b4 0.14-dev Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::1033; envelope-from=akihiko.odaki@daynix.com; helo=mail-pj1-x1033.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1714287748143100005 tap prepends a zeroed virtio-net header when writing a packet to a tap with virtio-net header enabled but not in use. This only happens when s->host_vnet_hdr_len =3D=3D sizeof(struct virtio_net_hdr). Signed-off-by: Akihiko Odaki --- net/tap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tap.c b/net/tap.c index 9825518ff1f3..51f7aec39d9e 100644 --- a/net/tap.c +++ b/net/tap.c @@ -119,7 +119,7 @@ static ssize_t tap_receive_iov(NetClientState *nc, cons= t struct iovec *iov, TAPState *s =3D DO_UPCAST(TAPState, nc, nc); const struct iovec *iovp =3D iov; g_autofree struct iovec *iov_copy =3D NULL; - struct virtio_net_hdr_mrg_rxbuf hdr =3D { }; + struct virtio_net_hdr hdr =3D { }; =20 if (s->host_vnet_hdr_len && !s->using_vnet_hdr) { iov_copy =3D g_new(struct iovec, iovcnt + 1); --=20 2.44.0