fix ethernet TX firmware: pad packet with zeros to reach size divisible by 4 (TX cannot deal with other sizes) (ab3c9fb) - mips_sys · BlinkenArea

fix ethernet TX firmware: pad packet with zeros to reach size divisible by 4 (TX cannot deal with other sizes)

Stefan Schuermans commited on 2012-03-19 23:32:26
Showing 1 changed files, with 2 additions and 0 deletions.

fw/eth.c 4fe8b3e..6e4cd5a

fw/eth.c

@@ -99,6 +99,8 @@ int eth_rx(void **pptr, unsigned int *psz)
  */
 void eth_tx(const void *ptr, unsigned int sz)
 {
+  while(sz & 3) /* pad with zeros up to next 4 byte boundary */
+    ((unsigned char *)ptr)[sz++] = 0;
   eth_ptr[8] = (unsigned int)ptr; /* start */
   eth_ptr[9] = (unsigned int)ptr + sz; /* end */
   eth_ptr[10] = 1; /* set flag */


...	...	@@ -99,6 +99,8 @@ int eth_rx(void *pptr, unsigned int psz)
99	99	*/
100	100	void eth_tx(const void *ptr, unsigned int sz)
101	101	{
	102	+ while(sz & 3) /* pad with zeros up to next 4 byte boundary */
	103	+ ((unsigned char *)ptr)[sz++] = 0;
102	104	eth_ptr[8] = (unsigned int)ptr; /* start */
103	105	eth_ptr[9] = (unsigned int)ptr + sz; /* end */
104	106	eth_ptr[10] = 1; /* set flag */
105	107