@@ -31,6 +31,7 @@
#include "qemu-common.h"
#include "clients.h" /* net_init_tap */
+#include "net/eth.h"
#include "net/net.h"
#include "net/tap.h" /* tap_has_ufo, ... */
#include "qemu/error-report.h"
@@ -688,9 +689,20 @@ static void tap_win32_send(void *opaque)
uint8_t *buf;
int max_size = 4096;
int size;
+ uint8_t min_buf[ETH_ZLEN];
size = tap_win32_read(s->handle, &buf, max_size);
if (size > 0) {
+ if (!s->nc.peer->do_not_pad) {
+ /* Pad to minimum Ethernet frame length */
+ if (size < ETH_ZLEN) {
+ memcpy(min_buf, buf, size);
+ memset(&min_buf[size], 0, ETH_ZLEN - size);
+ buf = min_buf;
+ size = ETH_ZLEN;
+ }
+ }
+
qemu_send_packet(&s->nc, buf, size);
tap_win32_free_buffer(s->handle, buf);
}
@@ -32,6 +32,7 @@
#include <sys/socket.h>
#include <net/if.h>
+#include "net/eth.h"
#include "net/net.h"
#include "clients.h"
#include "monitor/monitor.h"
@@ -189,6 +190,7 @@ static void tap_send(void *opaque)
while (true) {
uint8_t *buf = s->buf;
+ uint8_t min_buf[ETH_ZLEN];
size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
if (size <= 0) {
@@ -200,6 +202,16 @@ static void tap_send(void *opaque)
size -= s->host_vnet_hdr_len;
}
+ if (!s->nc.peer->do_not_pad) {
+ /* Pad to minimum Ethernet frame length */
+ if (size < ETH_ZLEN) {
+ memcpy(min_buf, buf, size);
+ memset(&min_buf[size], 0, ETH_ZLEN - size);
+ buf = min_buf;
+ size = ETH_ZLEN;
+ }
+ }
+
size = qemu_send_packet_async(&s->nc, buf, size, tap_send_completed);
if (size == 0) {
tap_read_poll(s, false);
Do the same for tap backend as what we did for slirp. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> --- net/tap-win32.c | 12 ++++++++++++ net/tap.c | 12 ++++++++++++ 2 files changed, 24 insertions(+)