In udp_vu_sock_recv(), collect a segment with a size defined to
IP_MAX_MTU + ETH_HLEN + sizeof(struct virtio_net_hdr_mrg_rxbuf)
The original version double counted the IP header: IP_MAX_MTU includes
the IP header, and so did hdrlen.
Signed-off-by: Laurent Vivier
---
udp_vu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/udp_vu.c b/udp_vu.c
index 9c697f3be247..41235101b69e 100644
--- a/udp_vu.c
+++ b/udp_vu.c
@@ -104,7 +104,8 @@ static int udp_vu_sock_recv(const struct ctx *c, int s, uint32_t events,
vu_init_elem(elem, iov_vu, VIRTQUEUE_MAX_SIZE);
iov_cnt = vu_collect(vdev, vq, elem, VIRTQUEUE_MAX_SIZE,
- IP_MAX_MTU - sizeof(struct udphdr) + hdrlen,
+ IP_MAX_MTU + ETH_HLEN +
+ sizeof(struct virtio_net_hdr_mrg_rxbuf),
NULL);
if (iov_cnt == 0)
return 0;
--
2.47.1