Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 86b4db3b authored by John Fastabend's avatar John Fastabend Committed by Jeff Kirsher
Browse files

ixgbe: setup redirection table for multiple packet buffers 



Setup RSS redirection table to be compatible with multiple packet
buffers. Currently, this works on 82599 devices because the RSS
redirection index is masked by the number of queues per packet
buffer.

This sets the cap on the RSS table to maxq.

Signed-off-by: default avatarJohn Fastabend <john.r.fastabend@intel.com>
Tested-by: default avatarRoss Brattain <ross.b.brattain@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent aba70d5e

drivers/net/ixgbe/ixgbe_main.c

+5 −1
Original line number Diff line number Diff line
@@ -2939,6 +2939,10 @@ static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 
	u32 rxcsum;

	int i, j;

	u8 tcs = netdev_get_num_tc(adapter->netdev);

	int maxq = adapter->ring_feature[RING_F_RSS].indices;



	if (tcs)

		maxq = min(maxq, adapter->num_tx_queues / tcs);



	/* Fill out hash function seeds */

	for (i = 0; i < 10; i++)
@@ -2946,7 +2950,7 @@ static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 


	/* Fill out redirection table */

	for (i = 0, j = 0; i < 128; i++, j++) {

		if (j == adapter->ring_feature[RING_F_RSS].indices)

		if (j == maxq)

			j = 0;

		/* reta = 4-byte sliding window of

		 * 0x00..(indices-1)(indices-1)00..etc. */