[RFC PATCH v3 08/10] hw/net: rtl8139: Remove the logic of padding short frames in the receive path

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

From: Bin Meng <bin.meng@windriver.com>

Now that we have implemented unified short frames padding in the
QEMU networking codes, remove the same logic in the NIC codes.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <1614763306-18026-8-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/net/rtl8139.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 4675ac878e9..cbfe29a2867 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -827,7 +827,6 @@ static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t
 
     uint32_t packet_header = 0;
 
-    uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
     static const uint8_t broadcast_macaddr[6] =
         { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 
@@ -939,17 +938,6 @@ static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t
         }
     }
 
-    /* if too small buffer, then expand it
-     * Include some tailroom in case a vlan tag is later removed. */
-    if (size < MIN_BUF_SIZE + VLAN_HLEN) {
-        memcpy(buf1, buf, size);
-        memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
-        buf = buf1;
-        if (size < MIN_BUF_SIZE) {
-            size = MIN_BUF_SIZE;
-        }
-    }
-
     if (rtl8139_cp_receiver_enabled(s))
     {
         if (!rtl8139_cp_rx_valid(s)) {
-- 
2.26.2