RTOS/PROCESSOR-SDK-AM437X: Raw Ethernet support for VLAN device patch

diff -ruP ndk_3_40_01_01/packages/ti/ndk/stack/raweth/raweth.c ndk_3_40_01_01.vlan/packages/ti/ndk/stack/raweth/raweth.c
--- ndk_3_40_01_01/packages/ti/ndk/stack/raweth/raweth.c	2018-08-31 19:18:35.000000000 +0300
+++ ndk_3_40_01_01.vlan/packages/ti/ndk/stack/raweth/raweth.c	2019-05-16 19:29:47.625761100 +0300
@@ -195,11 +195,8 @@
  */
 int RawEthRxPacket (PBM_Handle hPkt)
 {
-
     PBM_Pkt*        ptr_pkt = (PBM_Pkt *)hPkt;
-    uint32_t        Type;
     int32_t         len;
-    ETHHDR*         ptr_eth_header;
     SOCKRAWETH      *hRawEthSock;
     void            *hSBRx;
 
@@ -215,15 +212,10 @@
     ptr_pkt->ValidLen   += ptr_pkt->L2HdrLen;
     ptr_pkt->DataOffset -= ptr_pkt->L2HdrLen;
 
-    /* Get the pointer to the Ethernet Header. */
-    ptr_eth_header = (ETHHDR *) (ptr_pkt->pDataBuffer + ptr_pkt->DataOffset);
-
     /* Use the type field to determine if we have a matching
      * raw ethernet channel open
      */
-    Type = NDK_ntohs (ptr_eth_header->Type);
-
-    hRawEthSock = RawEthSockPcbFind (Type, ptr_pkt->hIFRx);
+    hRawEthSock = RawEthSockPcbFind (ptr_pkt->EtherType, ptr_pkt->hIFRx);
 
     if (!hRawEthSock)
     {
@@ -238,8 +230,8 @@
     /* If we are here, we found a valid socket */
     len = (int)ptr_pkt->ValidLen;
 
-	/* Get the receiver buffer handle */
-	hSBRx = RawEthSockGetRx(hRawEthSock);
+    /* Get the receiver buffer handle */
+    hSBRx = RawEthSockGetRx(hRawEthSock);
 
     /* Enqueue the data to the Socket buffer. */
     if( len && (SBGetSpace(hSBRx) >= len) )
diff -ruP ndk_3_40_01_01/packages/ti/ndk/stack/vlan/vlan.c ndk_3_40_01_01.vlan/packages/ti/ndk/stack/vlan/vlan.c
--- ndk_3_40_01_01/packages/ti/ndk/stack/vlan/vlan.c	2018-08-31 19:18:35.000000000 +0300
+++ ndk_3_40_01_01.vlan/packages/ti/ndk/stack/vlan/vlan.c	2019-05-16 19:17:48.215837700 +0300
@@ -140,31 +140,39 @@
     if (ptr_src_device == NULL)
         return encap_protocol;
 
-    /* Get the VLAN Source Interface: If none exists then this interface is not
-     * capable of receiving VLAN frames. */
-    ptr_src = VLANFindSourceInterface (ptr_src_device->index);
-    if (ptr_src == NULL)
-        return encap_protocol;
-
     /* Get the pointer to the VLAN Header */
     ptr_vlanhdr = (VLANHDR *) (ptr_pkt->pDataBuffer + ptr_pkt->DataOffset);
 
     /* Extract the VLAN Identifier. */
     vlan_id = NDK_ntohs(ptr_vlanhdr->TCI) & MAX_VLAN_ID;
 
-    /* Get the VLAN Node matching the VLAN ID: If none exists then it indicates there
-     * is no VLAN node; hence no NIMU network interface object capable of handling the
-     * VLAN Identifier.  */
-    ptr_node = VLANFindNode (vlan_id, ptr_src);
-    if (ptr_node == NULL)
-        return encap_protocol;
+    /* The null VLAN ID. Indicates that the tag header contains only priority information;
+     * no VLAN identifier is present in the frame.
+     */
+    if (vlan_id != 0)
+    {
+        /* Get the VLAN Source Interface: If none exists then this interface is not
+         * capable of receiving VLAN frames. */
+        ptr_src = VLANFindSourceInterface (ptr_src_device->index);
+        if (ptr_src == NULL)
+            return encap_protocol;
+
+        /* Get the VLAN Node matching the VLAN ID: If none exists then it indicates there
+         * is no VLAN node; hence no NIMU network interface object capable of handling the
+         * VLAN Identifier.  */
+        ptr_node = VLANFindNode (vlan_id, ptr_src);
+        if (ptr_node == NULL)
+            return encap_protocol;
+
+        /* Associate packet with the right vlan device. */
+        ptr_pkt->hIFRx = (void *)ptr_node->ptr_vlan_device;
+    }
 
     /* We can proceed with the packet. Modify the fields in the packet appropriately. */
     ptr_pkt->ValidLen   -= VLANHDR_SIZE;
     ptr_pkt->DataOffset += VLANHDR_SIZE;
     ptr_pkt->EtherType   = NDK_ntohs(ptr_vlanhdr->EncapProtocol);
     ptr_pkt->L2HdrLen   += VLANHDR_SIZE;
-    ptr_pkt->hIFRx       = (void *)ptr_node->ptr_vlan_device;
 
     /* Return the encapsulated protocol in host order. */
     return ptr_pkt->EtherType;