1 files changed, 46 insertions, 43 deletions

diff --git a/drivers/net/ethernet/sfc/falcon/ethtool.c b/drivers/net/ethernet/sfc/falcon/ethtool.c
index f4db683b80f7..27d1cd6f24ca 100644
--- a/drivers/net/ethernet/sfc/falcon/ethtool.c
+++ b/drivers/net/ethernet/sfc/falcon/ethtool.c
@@ -353,7 +353,7 @@ static int ef4_ethtool_fill_self_tests(struct ef4_nic *efx,
 	return n;
 }
 
-static size_t ef4_describe_per_queue_stats(struct ef4_nic *efx, u8 *strings)
+static size_t ef4_describe_per_queue_stats(struct ef4_nic *efx, u8 **strings)
 {
 	size_t n_stats = 0;
 	struct ef4_channel *channel;
@@ -361,24 +361,22 @@ static size_t ef4_describe_per_queue_stats(struct ef4_nic *efx, u8 *strings)
 	ef4_for_each_channel(channel, efx) {
 		if (ef4_channel_has_tx_queues(channel)) {
 			n_stats++;
-			if (strings != NULL) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 "tx-%u.tx_packets",
-					 channel->tx_queue[0].queue /
-					 EF4_TXQ_TYPES);
+			if (!strings)
+				continue;
 
-				strings += ETH_GSTRING_LEN;
-			}
+			ethtool_sprintf(strings, "tx-%u.tx_packets",
+					channel->tx_queue[0].queue /
+						EF4_TXQ_TYPES);
 		}
 	}
 	ef4_for_each_channel(channel, efx) {
 		if (ef4_channel_has_rx_queue(channel)) {
 			n_stats++;
-			if (strings != NULL) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 "rx-%d.rx_packets", channel->channel);
-				strings += ETH_GSTRING_LEN;
-			}
+			if (!strings)
+				continue;
+
+			ethtool_sprintf(strings, "rx-%d.rx_packets",
+					channel->channel);
 		}
 	}
 	return n_stats;
@@ -409,14 +407,10 @@ static void ef4_ethtool_get_strings(struct net_device *net_dev,
 
 	switch (string_set) {
 	case ETH_SS_STATS:
-		strings += (efx->type->describe_stats(efx, strings) *
-			    ETH_GSTRING_LEN);
+		efx->type->describe_stats(efx, &strings);
 		for (i = 0; i < EF4_ETHTOOL_SW_STAT_COUNT; i++)
-			strscpy(strings + i * ETH_GSTRING_LEN,
-				ef4_sw_stat_desc[i].name, ETH_GSTRING_LEN);
-		strings += EF4_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
-		strings += (ef4_describe_per_queue_stats(efx, strings) *
-			    ETH_GSTRING_LEN);
+			ethtool_puts(&strings, ef4_sw_stat_desc[i].name);
+		ef4_describe_per_queue_stats(efx, &strings);
 		break;
 	case ETH_SS_TEST:
 		ef4_ethtool_fill_self_tests(efx, NULL, strings, NULL);
@@ -950,6 +944,37 @@ static int ef4_ethtool_get_class_rule(struct ef4_nic *efx,
 }
 
 static int
+ef4_ethtool_get_rxfh_fields(struct net_device *net_dev,
+			    struct ethtool_rxfh_fields *info)
+{
+	struct ef4_nic *efx = netdev_priv(net_dev);
+
+	info->data = 0;
+	/* Falcon A0 and A1 had a 4-tuple hash for TCP and UDP, but it was
+	 * broken so we do not enable it.
+	 * Falcon B0 adds a Toeplitz hash, 4-tuple for TCP and 2-tuple for
+	 * other IPv4, including UDP.
+	 * See falcon_init_rx_cfg().
+	 */
+	if (ef4_nic_rev(efx) < EF4_REV_FALCON_B0)
+		return 0;
+	switch (info->flow_type) {
+	case TCP_V4_FLOW:
+		info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		fallthrough;
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+	case AH_ESP_V4_FLOW:
+	case IPV4_FLOW:
+		info->data |= RXH_IP_SRC | RXH_IP_DST;
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static int
 ef4_ethtool_get_rxnfc(struct net_device *net_dev,
 		      struct ethtool_rxnfc *info, u32 *rule_locs)
 {
@@ -960,29 +985,6 @@ ef4_ethtool_get_rxnfc(struct net_device *net_dev,
 		info->data = efx->n_rx_channels;
 		return 0;
 
-	case ETHTOOL_GRXFH: {
-		unsigned min_revision = 0;
-
-		info->data = 0;
-		switch (info->flow_type) {
-		case TCP_V4_FLOW:
-			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
-			fallthrough;
-		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 = EF4_REV_FALCON_B0;
-			break;
-		default:
-			break;
-		}
-		if (ef4_nic_rev(efx) < min_revision)
-			info->data = 0;
-		return 0;
-	}
-
 	case ETHTOOL_GRXCLSRLCNT:
 		info->data = ef4_filter_get_rx_id_limit(efx);
 		if (info->data == 0)
@@ -1349,6 +1351,7 @@ const struct ethtool_ops ef4_ethtool_ops = {
 	.get_rxfh_indir_size	= ef4_ethtool_get_rxfh_indir_size,
 	.get_rxfh		= ef4_ethtool_get_rxfh,
 	.set_rxfh		= ef4_ethtool_set_rxfh,
+	.get_rxfh_fields	= ef4_ethtool_get_rxfh_fields,
 	.get_module_info	= ef4_ethtool_get_module_info,
 	.get_module_eeprom	= ef4_ethtool_get_module_eeprom,
 	.get_link_ksettings	= ef4_ethtool_get_link_ksettings,