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Commit c342b39e authored by Laura Mihaela Vasilescu's avatar Laura Mihaela Vasilescu Committed by Jeff Kirsher
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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: default avatarLaura Mihaela Vasilescu <laura.vasilescu@rosedu.org>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 7dc98a62

drivers/net/ethernet/intel/igb/igb.h

+2 −0
Original line number Diff line number Diff line
@@ -343,6 +343,8 @@ struct hwmon_buff { 
	};

#endif



#define IGB_RETA_SIZE	128



/* board specific private data structure */

struct igb_adapter {

	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];

drivers/net/ethernet/intel/igb/igb_main.c

+1 −1
Original line number Diff line number Diff line
@@ -3157,7 +3157,7 @@ static void igb_setup_mrqc(struct igb_adapter *adapter) 
	 * 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);