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Commit 4251ea5b authored by Maxime Chevallier's avatar Maxime Chevallier Committed by David S. Miller
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net: mvpp2: use round-robin scheduling for TX queues on the same CPU 



This commit allows each TXQ to be picked in a round-robin fashion by
the PPv2 transmit scheduling mechanism. This is opposed to the default
behaviour that prioritizes the highest numbered queues.

Suggested-by: default avatarYan Markman <ymarkman@marvell.com>
Signed-off-by: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0d283ab5

drivers/net/ethernet/marvell/mvpp2/mvpp2.h

+1 −0
Original line number Diff line number Diff line
@@ -331,6 +331,7 @@ 
#define     MVPP2_TXP_SCHED_ENQ_MASK		0xff

#define     MVPP2_TXP_SCHED_DISQ_OFFSET		8

#define MVPP2_TXP_SCHED_CMD_1_REG		0x8010

#define MVPP2_TXP_SCHED_FIXED_PRIO_REG		0x8014

#define MVPP2_TXP_SCHED_PERIOD_REG		0x8018

#define MVPP2_TXP_SCHED_MTU_REG			0x801c

#define     MVPP2_TXP_MTU_MAX			0x7FFFF

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

+3 −0
Original line number Diff line number Diff line
@@ -1448,6 +1448,9 @@ static void mvpp2_defaults_set(struct mvpp2_port *port) 
		    tx_port_num);

	mvpp2_write(port->priv, MVPP2_TXP_SCHED_CMD_1_REG, 0);



	/* Set TXQ scheduling to Round-Robin */

	mvpp2_write(port->priv, MVPP2_TXP_SCHED_FIXED_PRIO_REG, 0);



	/* Close bandwidth for all queues */

	for (queue = 0; queue < MVPP2_MAX_TXQ; queue++) {

		ptxq = mvpp2_txq_phys(port->id, queue);