[PULL 05/20] tap: Call tap_receive_iov() from tap_receive()

[Jason Wang <jasowang@redhat.com>]

From: Akihiko Odaki <akihiko.odaki@daynix.com>

This will save duplicate logic found in both of tap_receive_iov() and
tap_receive().

Suggested-by: "Zhang, Chen" <chen.zhang@intel.com>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 net/tap.c | 35 +++++------------------------------
 1 file changed, 5 insertions(+), 30 deletions(-)

diff --git a/net/tap.c b/net/tap.c
index 99c59ee468..9825518ff1 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -133,39 +133,14 @@ static ssize_t tap_receive_iov(NetClientState *nc, const struct iovec *iov,
     return tap_write_packet(s, iovp, iovcnt);
 }
 
-static ssize_t tap_receive_raw(NetClientState *nc, const uint8_t *buf, size_t size)
-{
-    TAPState *s = DO_UPCAST(TAPState, nc, nc);
-    struct iovec iov[2];
-    int iovcnt = 0;
-    struct virtio_net_hdr_mrg_rxbuf hdr = { };
-
-    if (s->host_vnet_hdr_len) {
-        iov[iovcnt].iov_base = &hdr;
-        iov[iovcnt].iov_len  = s->host_vnet_hdr_len;
-        iovcnt++;
-    }
-
-    iov[iovcnt].iov_base = (char *)buf;
-    iov[iovcnt].iov_len  = size;
-    iovcnt++;
-
-    return tap_write_packet(s, iov, iovcnt);
-}
-
 static ssize_t tap_receive(NetClientState *nc, const uint8_t *buf, size_t size)
 {
-    TAPState *s = DO_UPCAST(TAPState, nc, nc);
-    struct iovec iov[1];
-
-    if (s->host_vnet_hdr_len && !s->using_vnet_hdr) {
-        return tap_receive_raw(nc, buf, size);
-    }
-
-    iov[0].iov_base = (char *)buf;
-    iov[0].iov_len  = size;
+    struct iovec iov = {
+        .iov_base = (void *)buf,
+        .iov_len = size
+    };
 
-    return tap_write_packet(s, iov, 1);
+    return tap_receive_iov(nc, &iov, 1);
 }
 
 #ifndef __sun__
-- 
2.42.0