igb: Add macro for size of RETA indirection table
RETA indirection table is used to assign the received data to a CPU
in order to maintain an efficient distribution of network receive
processing across multiple CPUs.
This patch removes the hard-coded value for the size of the indirection
table and defines a new macro.
Signed-off-by: Laura Mihaela Vasilescu <laura.vasilescu@rosedu.org>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index 15ea8dc..5a2659b 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -343,6 +343,8 @@
};
#endif
+#define IGB_RETA_SIZE 128
+
/* board specific private data structure */
struct igb_adapter {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 7f6cf65..1acd9c0 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -3157,7 +3157,7 @@
* we are generating the results for n and n+2 and then interleaving
* those with the results with n+1 and n+3.
*/
- for (j = 0; j < 32; j++) {
+ for (j = 0; j < IGB_RETA_SIZE / 4; j++) {
/* first pass generates n and n+2 */
u32 base = ((j * 0x00040004) + 0x00020000) * num_rx_queues;
u32 reta = (base & 0x07800780) >> (7 - shift);
