[Qemu-devel] [PATCH 76/81] NetRxPkt: Account buffer with ETH header in IOV length

[Michael Roth]

From: Dmitry Fleytman <address@hidden>

In case of VLAN stripping ETH header is stored in a
separate chunk and length of IOV should take this into
account.

This patch fixes checksum validation for RX packets
with VLAN header.

Devices affected by this problem: e1000e and vmxnet3.

Cc: address@hidden
Signed-off-by: Dmitry Fleytman <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
(cherry picked from commit c5d083c561a4f5297cc2e44a2f3cef3324d77a88)
Signed-off-by: Michael Roth <address@hidden>
---
 hw/net/net_rx_pkt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/net/net_rx_pkt.c b/hw/net/net_rx_pkt.c
index d38babe..c7ae33d 100644
--- a/hw/net/net_rx_pkt.c
+++ b/hw/net/net_rx_pkt.c
@@ -97,7 +97,7 @@ net_rx_pkt_pull_data(struct NetRxPkt *pkt,
         pkt->tot_len = iov_size(iov, iovcnt) - ploff + pkt->ehdr_buf_len;
         pkt->vec_len = iov_copy(pkt->vec + 1, pkt->vec_len_total - 1,
                                 iov, iovcnt, ploff,
-                                pkt->tot_len - pkt->ehdr_buf_len);
+                                pkt->tot_len - pkt->ehdr_buf_len) + 1;
     } else {
         net_rx_pkt_iovec_realloc(pkt, iovcnt);
 
-- 
2.7.4