Changes between Version 44 and Version 45 of library_stdio

Timestamp:

Jan 23, 2015, 9:10:27 PM (9 years ago)

Author:

alain

Comment:

--

library_stdio

@@ -122 +122 @@
  === 1) unsigned int '''giet_nic_tx_alloc'''( unsigned int x_size,  unsigned int y_size) ===
 This function allocates a private NIC_TX channel (coming with the associated kernel NIC_TX chbuf), and a private CMA channel  to the calling task. It registers both indexes in the calling task context, and returns the NIC channel index. This channel can be shared by severals tasks of a parallel multi-tasks application. 
-The packets are transfered by the hardware to the NIC from a distributed kernel chbuf (one 4 Kbytes container per cluster), where the involved clusters are defined by the (x_size / y_size) parameters. 
+The packets are transfered by the hardware to the NIC from a distributed kernel chbuf (one 4 Kbytes container per cluster), where the involved clusters are defined by the (x_size / y_size) parameters. The (x_size / y_size) cannot be larger than the (X_SIZE / Y_SIZE) defining the max number of clusters in the hardware,
+but they can be smaller.
 The calling task exit if no available NIC_TX channel,  if no available CMA channel, if (x_size / y_size) are too large, or if there is not enough memory for the distributed kernel containers in one selected cluster.
 
  === 2) unsigned int '''giet_nic_rx_alloc'''( ) ===
 This function allocates a private NIC_RX channel (coming with the associated kernel NIC_RX chbuf), and a private CMA channel  to the calling task. It registers both indexes in the calling task context, and returns the NIC channel index. This channel can be shared by severals tasks of a parallel multi-tasks application.
-The packets are transfered by the hardware from the NIC to a distributed kernel chbuf (one 4 Kbytes container per cluster), where the involved clusters are defined by the (x_size / y_size) parameters. 
+The packets are transfered by the hardware from the NIC to a distributed kernel chbuf (one 4 Kbytes container per cluster), where the involved clusters are defined by the (x_size / y_size) parameters. The (x_size / y_size) cannot be larger than the (X_SIZE / Y_SIZE) defining the max number of clusters in the hardware,
+but they can be smaller.
 The calling task exit if no available NIC_TX channel,  if no available CMA channel, if (x_size / y_size) are too large, or if there is not enough memory for the distributed kernel containers in one selected cluster.