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[75/81] NetRxPkt: Do not try to pull more data than present

Message ID 1490051325-3770-76-git-send-email-mdroth@linux.vnet.ibm.com
State New
Headers show

Commit Message

Michael Roth March 20, 2017, 11:08 p.m. UTC 
From: Dmitry Fleytman <dmitry@daynix.com>

In case of VLAN stripping, ETH header put into a
separate buffer, therefore amont of data copied
from original IOV should be smaller.

Cc: qemu-stable@nongnu.org
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit d5e772146d2bbc92e5126c145eddef3b2843d026)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/net/net_rx_pkt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/hw/net/net_rx_pkt.c b/hw/net/net_rx_pkt.c
index 7c0beac..d38babe 100644
--- a/hw/net/net_rx_pkt.c
+++ b/hw/net/net_rx_pkt.c
@@ -96,7 +96,8 @@  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);
+                                iov, iovcnt, ploff,
+                                pkt->tot_len - pkt->ehdr_buf_len);
     } else {
         net_rx_pkt_iovec_realloc(pkt, iovcnt);