sfc: report 4-tuple UDP hashing to ethtool, if it's enabled

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 14 insertions, 6 deletions

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 9f6d7690bc0a..e61807e6d47b 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2319,8 +2319,10 @@ static void efx_ef10_set_rss_flags(struct efx_nic *efx, u32 context)
         flags |= RSS_MODE_HASH_PORTS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV4_RSS_MODE_LBN;
         flags |= RSS_MODE_HASH_PORTS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV6_RSS_MODE_LBN;
         MCDI_SET_DWORD(inbuf, RSS_CONTEXT_SET_FLAGS_IN_FLAGS, flags);
-        efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_FLAGS, inbuf, sizeof(inbuf),
-                     NULL, 0, NULL);
+        if (!efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_FLAGS, inbuf, sizeof(inbuf),
+                          NULL, 0, NULL))
+                /* Succeeded, so UDP 4-tuple is now enabled */
+                efx->rx_hash_udp_4tuple = true;
 }
 
 static int efx_ef10_alloc_rss_context(struct efx_nic *efx, u32 *context,
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 445ccdb6bc67..bf126f935ade 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -968,20 +968,24 @@ efx_ethtool_get_rxnfc(struct net_device *net_dev,
 
                 info->data = 0;
                 switch (info->flow_type) {
+                case UDP_V4_FLOW:
+                        if (efx->rx_hash_udp_4tuple)
+                                /* fall through */
                 case TCP_V4_FLOW:
-                        info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+                                info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                         /* fall through */
-                case UDP_V4_FLOW:
                 case SCTP_V4_FLOW:
                 case AH_ESP_V4_FLOW:
                 case IPV4_FLOW:
                         info->data |= RXH_IP_SRC | RXH_IP_DST;
                         min_revision = EFX_REV_FALCON_B0;
                         break;
+                case UDP_V6_FLOW:
+                        if (efx->rx_hash_udp_4tuple)
+                                /* fall through */
                 case TCP_V6_FLOW:
-                        info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+                                info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
                         /* fall through */
-                case UDP_V6_FLOW:
                 case SCTP_V6_FLOW:
                 case AH_ESP_V6_FLOW:
                 case IPV6_FLOW:
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 99d8c82124bb..fec51c4b2607 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -853,6 +853,7 @@ struct vfdi_status;
  * @rx_hash_key: Toeplitz hash key for RSS
  * @rx_indir_table: Indirection table for RSS
  * @rx_scatter: Scatter mode enabled for receives
+ * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled
  * @int_error_count: Number of internal errors seen recently
  * @int_error_expire: Time at which error count will be expired
  * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will
@@ -990,6 +991,7 @@ struct efx_nic {
         u8 rx_hash_key[40];
         u32 rx_indir_table[128];
         bool rx_scatter;
+        bool rx_hash_udp_4tuple;
 
         unsigned int_error_count;
         unsigned long int_error_expire;