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>
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97e1eaa0e9
Коммит
d614cfbc2f
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@ -135,12 +135,14 @@ static inline struct falcon_board *falcon_board(struct efx_nic *efx)
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* @fw_build: Firmware build number
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* @mcdi: Management-Controller-to-Driver Interface
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* @wol_filter_id: Wake-on-LAN packet filter id
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* @ipv6_rss_key: Toeplitz hash key for IPv6 RSS
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*/
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struct siena_nic_data {
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u64 fw_version;
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u32 fw_build;
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struct efx_mcdi_iface mcdi;
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int wol_filter_id;
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u8 ipv6_rss_key[40];
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};
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extern void siena_print_fwver(struct efx_nic *efx, char *buf, size_t len);
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@ -13,6 +13,7 @@
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/random.h>
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#include "net_driver.h"
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#include "bitfield.h"
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#include "efx.h"
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@ -274,6 +275,9 @@ static int siena_probe_nic(struct efx_nic *efx)
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goto fail5;
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}
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get_random_bytes(&nic_data->ipv6_rss_key,
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sizeof(nic_data->ipv6_rss_key));
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return 0;
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fail5:
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@ -293,6 +297,7 @@ fail1:
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*/
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static int siena_init_nic(struct efx_nic *efx)
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{
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struct siena_nic_data *nic_data = efx->nic_data;
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efx_oword_t temp;
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int rc;
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@ -319,6 +324,20 @@ static int siena_init_nic(struct efx_nic *efx)
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EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_INGR_EN, 1);
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efx_writeo(efx, &temp, FR_AZ_RX_CFG);
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/* Enable IPv6 RSS */
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BUILD_BUG_ON(sizeof(nic_data->ipv6_rss_key) !=
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2 * sizeof(temp) + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8 ||
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FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN != 0);
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memcpy(&temp, nic_data->ipv6_rss_key, sizeof(temp));
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efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1);
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memcpy(&temp, nic_data->ipv6_rss_key + sizeof(temp), sizeof(temp));
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efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG2);
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EFX_POPULATE_OWORD_2(temp, FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1,
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FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, 1);
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memcpy(&temp, nic_data->ipv6_rss_key + 2 * sizeof(temp),
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FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8);
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efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG3);
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if (efx_nic_rx_xoff_thresh >= 0 || efx_nic_rx_xon_thresh >= 0)
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/* No MCDI operation has been defined to set thresholds */
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EFX_ERR(efx, "ignoring RX flow control thresholds\n");
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