diff options
Diffstat (limited to 'drivers/net/macvtap.c')
| -rw-r--r-- | drivers/net/macvtap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 2aa5e973ef17..4a34bcb6549f 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -871,6 +871,7 @@ static ssize_t macvtap_aio_read(struct kiocb *iocb, const struct iovec *iv, } ret = macvtap_do_read(q, iv, len, file->f_flags & O_NONBLOCK); + ret = min_t(ssize_t, ret, len); /* XXX copied from tun.c. Why? */ if (ret > 0) iocb->ki_pos = ret; out: @@ -1105,6 +1106,10 @@ static int macvtap_recvmsg(struct kiocb *iocb, struct socket *sock, return -EINVAL; ret = macvtap_do_read(q, m->msg_iov, total_len, flags & MSG_DONTWAIT); + if (ret > total_len) { + m->msg_flags |= MSG_TRUNC; + ret = flags & MSG_TRUNC ? ret : total_len; + } return ret; } |