Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-04-01

This series contains updates to i40e driver only.

Arkadiusz fixes warnings for inconsistent indentation.

Magnus fixes an issue on xsk receive where single packets over time
are batched rather than received immediately.

Eryk corrects warnings and reporting of veb-stats.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -232,6 +232,8 @@ static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
 	I40E_STAT(struct i40e_vsi, _name, _stat)
 #define I40E_VEB_STAT(_name, _stat) \
 	I40E_STAT(struct i40e_veb, _name, _stat)
+#define I40E_VEB_TC_STAT(_name, _stat) \
+	I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
 #define I40E_PFC_STAT(_name, _stat) \
 	I40E_STAT(struct i40e_pfc_stats, _name, _stat)
 #define I40E_QUEUE_STAT(_name, _stat) \
@@ -266,11 +268,18 @@ static const struct i40e_stats i40e_gstrings_veb_stats[] = {
 	I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
 };
 
+struct i40e_cp_veb_tc_stats {
+	u64 tc_rx_packets;
+	u64 tc_rx_bytes;
+	u64 tc_tx_packets;
+	u64 tc_tx_bytes;
+};
+
 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
-	I40E_VEB_STAT("veb.tc_%u_tx_packets", tc_stats.tc_tx_packets),
-	I40E_VEB_STAT("veb.tc_%u_tx_bytes", tc_stats.tc_tx_bytes),
-	I40E_VEB_STAT("veb.tc_%u_rx_packets", tc_stats.tc_rx_packets),
-	I40E_VEB_STAT("veb.tc_%u_rx_bytes", tc_stats.tc_rx_bytes),
+	I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
+	I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
+	I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
+	I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
 };
 
 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
@@ -2217,6 +2226,29 @@ static int i40e_get_sset_count(struct net_device *netdev, int sset)
 	}
 }
 
+/**
+ * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
+ * @tc: the TC statistics in VEB structure (veb->tc_stats)
+ * @i: the index of traffic class in (veb->tc_stats) structure to copy
+ *
+ * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
+ * one dimensional structure i40e_cp_veb_tc_stats.
+ * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
+ * statistics for the given TC.
+ **/
+static struct i40e_cp_veb_tc_stats
+i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
+{
+	struct i40e_cp_veb_tc_stats veb_tc = {
+		.tc_rx_packets = tc->tc_rx_packets[i],
+		.tc_rx_bytes = tc->tc_rx_bytes[i],
+		.tc_tx_packets = tc->tc_tx_packets[i],
+		.tc_tx_bytes = tc->tc_tx_bytes[i],
+	};
+
+	return veb_tc;
+}
+
 /**
  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
  * @pf: the PF device structure
@@ -2301,8 +2333,16 @@ static void i40e_get_ethtool_stats(struct net_device *netdev,
 			       i40e_gstrings_veb_stats);
 
 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
-		i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
+		if (veb_stats) {
+			struct i40e_cp_veb_tc_stats veb_tc =
+				i40e_get_veb_tc_stats(&veb->tc_stats, i);
+
+			i40e_add_ethtool_stats(&data, &veb_tc,
+					       i40e_gstrings_veb_tc_stats);
+		} else {
+			i40e_add_ethtool_stats(&data, NULL,
 					       i40e_gstrings_veb_tc_stats);
+		}
 
 	i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
 

drivers/net/ethernet/intel/i40e/i40e_xsk.c

@@ -471,7 +471,7 @@ static bool i40e_xmit_zc(struct i40e_ring *xdp_ring, unsigned int budget)
 
 	nb_pkts = xsk_tx_peek_release_desc_batch(xdp_ring->xsk_pool, descs, budget);
 	if (!nb_pkts)
-		return false;
+		return true;
 
 	if (xdp_ring->next_to_use + nb_pkts >= xdp_ring->count) {
 		nb_processed = xdp_ring->count - xdp_ring->next_to_use;
@@ -488,7 +488,7 @@ static bool i40e_xmit_zc(struct i40e_ring *xdp_ring, unsigned int budget)
 
 	i40e_update_tx_stats(xdp_ring, nb_pkts, total_bytes);
 
-	return true;
+	return nb_pkts < budget;
 }
 
 /**