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Commit 00427a73 authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller
Browse files

sky2: used fixed RSS key 



Rather than generating a different RSS key on each boot, just use
a predetermined value that will map same flow to same value on
every device.

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b1cb8256

drivers/net/ethernet/marvell/sky2.c

+9 −4
Original line number Diff line number Diff line
@@ -1275,6 +1275,14 @@ static void rx_set_checksum(struct sky2_port *sky2) 
		     ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);

}



/*

 * Fixed initial key as seed to RSS.

 */

static const uint32_t rss_init_key[10] = {

	0x7c3351da, 0x51c5cf4e,	0x44adbdd1, 0xe8d38d18,	0x48897c43,

	0xb1d60e7e, 0x6a3dd760, 0x01a2e453, 0x16f46f13, 0x1a0e7b30

};



/* Enable/disable receive hash calculation (RSS) */

static void rx_set_rss(struct net_device *dev, u32 features)

{
@@ -1290,12 +1298,9 @@ static void rx_set_rss(struct net_device *dev, u32 features) 


	/* Program RSS initial values */

	if (features & NETIF_F_RXHASH) {

		u32 key[nkeys];



		get_random_bytes(key, nkeys * sizeof(u32));

		for (i = 0; i < nkeys; i++)

			sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),

				     key[i]);

				     rss_init_key[i]);



		/* Need to turn on (undocumented) flag to make hashing work  */

		sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),