@@ -710,23 +710,28 @@ ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
int iovcnt, unsigned flags)
{
- uint8_t buf[NET_BUFSIZE];
- uint8_t *buffer;
+ uint8_t *buffer, *dynbuf = NULL;
size_t offset;
+ ssize_t ret;
if (iovcnt == 1) {
buffer = iov[0].iov_base;
offset = iov[0].iov_len;
} else {
- buffer = buf;
- offset = iov_to_buf(iov, iovcnt, 0, buf, sizeof(buf));
+ buffer = dynbuf = g_new(uint8_t, NET_BUFSIZE);
+ offset = iov_to_buf(iov, iovcnt, 0, buffer,
+ NET_BUFSIZE * sizeof(uint8_t));
}
if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
- return nc->info->receive_raw(nc, buffer, offset);
+ ret = nc->info->receive_raw(nc, buffer, offset);
} else {
- return nc->info->receive(nc, buffer, offset);
+ ret = nc->info->receive(nc, buffer, offset);
}
+
+ g_free(dynbuf);
+
+ return ret;
}
ssize_t qemu_deliver_packet_iov(NetClientState *sender,
Allocate large array in nc_sendv_compat on the heap to reduce stack frame size, as stated in the BiteSizedTasks wiki page. Signed-off-by: Nikos Filippakis <aesmade@gmail.com> --- net/net.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)