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authorBen Hutchings <bhutchings@solarflare.com>2010-04-28 09:29:02 +0000
committerDavid S. Miller <davem@davemloft.net>2010-04-28 12:44:37 -0700
commitd614cfbc2f6f631e4dba72f945f185ea45ff3f78 (patch)
tree37316d72ccb0d6f363387abae2de14e32d7f60d6 /drivers/net/sfc
parent97e1eaa0e943439208a692b00dce4a8a3006760f (diff)
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sfc: Enable IPv6 RSS using random key for Toeplitz hash
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc')
-rw-r--r--drivers/net/sfc/nic.h2
-rw-r--r--drivers/net/sfc/siena.c19
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/sfc/nic.h b/drivers/net/sfc/nic.h
index 7e3bec8..5825f37 100644
--- a/drivers/net/sfc/nic.h
+++ b/drivers/net/sfc/nic.h
@@ -135,12 +135,14 @@ static inline struct falcon_board *falcon_board(struct efx_nic *efx)
* @fw_build: Firmware build number
* @mcdi: Management-Controller-to-Driver Interface
* @wol_filter_id: Wake-on-LAN packet filter id
+ * @ipv6_rss_key: Toeplitz hash key for IPv6 RSS
*/
struct siena_nic_data {
u64 fw_version;
u32 fw_build;
struct efx_mcdi_iface mcdi;
int wol_filter_id;
+ u8 ipv6_rss_key[40];
};
extern void siena_print_fwver(struct efx_nic *efx, char *buf, size_t len);
diff --git a/drivers/net/sfc/siena.c b/drivers/net/sfc/siena.c
index 38dcc42..7bf93fa 100644
--- a/drivers/net/sfc/siena.c
+++ b/drivers/net/sfc/siena.c
@@ -13,6 +13,7 @@
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/random.h>
#include "net_driver.h"
#include "bitfield.h"
#include "efx.h"
@@ -274,6 +275,9 @@ static int siena_probe_nic(struct efx_nic *efx)
goto fail5;
}
+ get_random_bytes(&nic_data->ipv6_rss_key,
+ sizeof(nic_data->ipv6_rss_key));
+
return 0;
fail5:
@@ -293,6 +297,7 @@ fail1:
*/
static int siena_init_nic(struct efx_nic *efx)
{
+ struct siena_nic_data *nic_data = efx->nic_data;
efx_oword_t temp;
int rc;
@@ -319,6 +324,20 @@ static int siena_init_nic(struct efx_nic *efx)
EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_INGR_EN, 1);
efx_writeo(efx, &temp, FR_AZ_RX_CFG);
+ /* Enable IPv6 RSS */
+ BUILD_BUG_ON(sizeof(nic_data->ipv6_rss_key) !=
+ 2 * sizeof(temp) + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8 ||
+ FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN != 0);
+ memcpy(&temp, nic_data->ipv6_rss_key, sizeof(temp));
+ efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1);
+ memcpy(&temp, nic_data->ipv6_rss_key + sizeof(temp), sizeof(temp));
+ efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG2);
+ EFX_POPULATE_OWORD_2(temp, FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1,
+ FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, 1);
+ memcpy(&temp, nic_data->ipv6_rss_key + 2 * sizeof(temp),
+ FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8);
+ efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG3);
+
if (efx_nic_rx_xoff_thresh >= 0 || efx_nic_rx_xon_thresh >= 0)
/* No MCDI operation has been defined to set thresholds */
EFX_ERR(efx, "ignoring RX flow control thresholds\n");