IOB: Remove private data. Not needed

nuttx/include/nuttx/net/iob.h

@@ -65,8 +65,8 @@
  ****************************************************************************/
 
 /* Represents one I/O buffer.  A packet is contained by one or more I/O
- * buffers in a chain.  Theio_pktlen and io_priv fields are only valid for
- * the I/O buffer at the head of the chain.
+ * buffers in a chain.  The io_pktlen is only valid for the I/O buffer at
+ * the head of the chain.
  */
 
 struct iob_s
@@ -85,7 +85,6 @@ struct iob_s
   uint16_t io_offset;   /* Data begins at this offset */
 #endif
   uint16_t io_pktlen;   /* Total length of the packet */
-  void    *io_priv;     /* User private data attached to the I/O buffer */
 
   uint8_t  io_data[CONFIG_IOB_BUFSIZE];
 };

nuttx/net/iob/iob_alloc.c

@@ -96,7 +96,6 @@ FAR struct iob_s *iob_alloc(void)
       iob->io_len    = 0;    /* Length of the data in the entry */
       iob->io_offset = 0;    /* Offset to the beginning of data */
       iob->io_pktlen = 0;    /* Total length of the packet */
-      iob->io_priv   = NULL; /* User private data attached to the I/O buffer */
       return iob;
     }
 

nuttx/net/iob/iob_clone.c

@@ -93,10 +93,9 @@ int iob_clone(FAR struct iob_s *iob1, FAR struct iob_s *iob2)
   DEBUGASSERT(iob2->io_len == 0 && iob2->io_offset == 0 &&
               iob2->io_pktlen == 0 && iob2->io_flink == NULL);
 
-  /* Copy the header information */
+  /* Copy the total packet size from the I/O buffer at the head of the chain */
 
   iob2->io_pktlen = iob1->io_pktlen;
-  iob2->io_priv = iob1->io_priv;
 
   /* Handle special case where there are empty buffers at the head
    * the the list.

nuttx/net/iob/iob_concat.c

@@ -86,10 +86,7 @@ void iob_concat(FAR struct iob_s *iob1, FAR struct iob_s *iob2)
 
   iob1->io_flink = iob2;
 
-  /* Combine the total packet size.  flags, VLAN, tags, and private
-  * data from iob2 are lost.
-  */
+  /* Combine the total packet size */
 
   iob1->io_pktlen += iob2->io_pktlen;
-  iob2->io_priv    = NULL;
 }

nuttx/net/iob/iob_free.c

@@ -86,9 +86,6 @@ FAR struct iob_s *iob_free(FAR struct iob_s *iob)
 
   if (next)
     {
-      /* Just copy the flags and private information to the next entry. */
-
-      next->io_priv  = iob->io_priv;
 
       /* Copy and decrement the total packet length, being careful to
        * do nothing too crazy.

nuttx/net/iob/iob_test.c

@@ -86,8 +86,7 @@ static void dump_chain(struct iob_s *iob)
 
   while (iob)
     {
-      printf("%d. len=%d, offset=%d, priv=%p\n",
-             n, iob->io_len, iob->io_offset, iob->io_priv);
+      printf("%d. len=%d, offset=%d\n", n, iob->io_len, iob->io_offset);
 
       pktlen += iob->io_len;
       iob = iob->io_flink;