diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2010-04-28 09:29:02 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-28 12:44:37 -0700 |
| commit | d614cfbc2f6f631e4dba72f945f185ea45ff3f78 (patch) | |
| tree | 37316d72ccb0d6f363387abae2de14e32d7f60d6 | |
| parent | 97e1eaa0e943439208a692b00dce4a8a3006760f (diff) | |
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>
| -rw-r--r-- | drivers/net/sfc/nic.h | 2 | ||||
| -rw-r--r-- | drivers/net/sfc/siena.c | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/sfc/nic.h b/drivers/net/sfc/nic.h index 7e3bec8561b8..5825f37b51bd 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 38dcc42c4f79..7bf93faff3ab 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"); |