Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Add Maglev hashing scheduler to IPVS, from Inju Song.

 2) Lots of new TC subsystem tests from Roman Mashak.

 3) Add TCP zero copy receive and fix delayed acks and autotuning with
    SO_RCVLOWAT, from Eric Dumazet.

 4) Add XDP_REDIRECT support to mlx5 driver, from Jesper Dangaard
    Brouer.

 5) Add ttl inherit support to vxlan, from Hangbin Liu.

 6) Properly separate ipv6 routes into their logically independant
    components. fib6_info for the routing table, and fib6_nh for sets of
    nexthops, which thus can be shared. From David Ahern.

 7) Add bpf_xdp_adjust_tail helper, which can be used to generate ICMP
    messages from XDP programs. From Nikita V. Shirokov.

 8) Lots of long overdue cleanups to the r8169 driver, from Heiner
    Kallweit.

 9) Add BTF ("BPF Type Format"), from Martin KaFai Lau.

10) Add traffic condition monitoring to iwlwifi, from Luca Coelho.

11) Plumb extack down into fib_rules, from Roopa Prabhu.

12) Add Flower classifier offload support to igb, from Vinicius Costa
    Gomes.

13) Add UDP GSO support, from Willem de Bruijn.

14) Add documentation for eBPF helpers, from Quentin Monnet.

15) Add TLS tx offload to mlx5, from Ilya Lesokhin.

16) Allow applications to be given the number of bytes available to read
    on a socket via a control message returned from recvmsg(), from
    Soheil Hassas Yeganeh.

17) Add x86_32 eBPF JIT compiler, from Wang YanQing.

18) Add AF_XDP sockets, with zerocopy support infrastructure as well.
    From Björn Töpel.

19) Remove indirect load support from all of the BPF JITs and handle
    these operations in the verifier by translating them into native BPF
    instead. From Daniel Borkmann.

20) Add GRO support to ipv6 gre tunnels, from Eran Ben Elisha.

21) Allow XDP programs to do lookups in the main kernel routing tables
    for forwarding. From David Ahern.

22) Allow drivers to store hardware state into an ELF section of kernel
    dump vmcore files, and use it in cxgb4. From Rahul Lakkireddy.

23) Various RACK and loss detection improvements in TCP, from Yuchung
    Cheng.

24) Add TCP SACK compression, from Eric Dumazet.

25) Add User Mode Helper support and basic bpfilter infrastructure, from
    Alexei Starovoitov.

26) Support ports and protocol values in RTM_GETROUTE, from Roopa
    Prabhu.

27) Support bulking in ->ndo_xdp_xmit() API, from Jesper Dangaard
    Brouer.

28) Add lots of forwarding selftests, from Petr Machata.

29) Add generic network device failover driver, from Sridhar Samudrala.

* ra.kernel.org:/pub/scm/linux/kernel/git/davem/net-next: (1959 commits)
  strparser: Add __strp_unpause and use it in ktls.
  rxrpc: Fix terminal retransmission connection ID to include the channel
  net: hns3: Optimize PF CMDQ interrupt switching process
  net: hns3: Fix for VF mailbox receiving unknown message
  net: hns3: Fix for VF mailbox cannot receiving PF response
  bnx2x: use the right constant
  Revert "net: sched: cls: Fix offloading when ingress dev is vxlan"
  net: dsa: b53: Fix for brcm tag issue in Cygnus SoC
  enic: fix UDP rss bits
  netdev-FAQ: clarify DaveM's position for stable backports
  rtnetlink: validate attributes in do_setlink()
  mlxsw: Add extack messages for port_{un, }split failures
  netdevsim: Add extack error message for devlink reload
  devlink: Add extack to reload and port_{un, }split operations
  net: metrics: add proper netlink validation
  ipmr: fix error path when ipmr_new_table fails
  ip6mr: only set ip6mr_table from setsockopt when ip6mr_new_table succeeds
  net: hns3: remove unused hclgevf_cfg_func_mta_filter
  netfilter: provide udp*_lib_lookup for nf_tproxy
  qed*: Utilize FW 8.37.2.0
  ...

9 files changed, 252 insertions, 117 deletions

diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
index d5a32b7c7dc5..031f6e6ee9c1 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
@@ -683,10 +683,11 @@ static int emac_tx_q_desc_alloc(struct emac_adapter *adpt,
 				struct emac_tx_queue *tx_q)
 {
 	struct emac_ring_header *ring_header = &adpt->ring_header;
+	int node = dev_to_node(adpt->netdev->dev.parent);
 	size_t size;
 
 	size = sizeof(struct emac_buffer) * tx_q->tpd.count;
-	tx_q->tpd.tpbuff = kzalloc(size, GFP_KERNEL);
+	tx_q->tpd.tpbuff = kzalloc_node(size, GFP_KERNEL, node);
 	if (!tx_q->tpd.tpbuff)
 		return -ENOMEM;
 
@@ -723,11 +724,12 @@ static void emac_rx_q_bufs_free(struct emac_adapter *adpt)
 static int emac_rx_descs_alloc(struct emac_adapter *adpt)
 {
 	struct emac_ring_header *ring_header = &adpt->ring_header;
+	int node = dev_to_node(adpt->netdev->dev.parent);
 	struct emac_rx_queue *rx_q = &adpt->rx_q;
 	size_t size;
 
 	size = sizeof(struct emac_buffer) * rx_q->rfd.count;
-	rx_q->rfd.rfbuff = kzalloc(size, GFP_KERNEL);
+	rx_q->rfd.rfbuff = kzalloc_node(size, GFP_KERNEL, node);
 	if (!rx_q->rfd.rfbuff)
 		return -ENOMEM;
 
@@ -920,14 +922,13 @@ static void emac_mac_rx_descs_refill(struct emac_adapter *adpt,
 static void emac_adjust_link(struct net_device *netdev)
 {
 	struct emac_adapter *adpt = netdev_priv(netdev);
-	struct emac_sgmii *sgmii = &adpt->phy;
 	struct phy_device *phydev = netdev->phydev;
 
 	if (phydev->link) {
 		emac_mac_start(adpt);
-		sgmii->link_up(adpt);
+		emac_sgmii_link_change(adpt, true);
 	} else {
-		sgmii->link_down(adpt);
+		emac_sgmii_link_change(adpt, false);
 		emac_mac_stop(adpt);
 	}
 
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c
index e8ab512ee7e3..e78e5db39458 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c
@@ -53,6 +53,46 @@
 
 #define SERDES_START_WAIT_TIMES			100
 
+int emac_sgmii_init(struct emac_adapter *adpt)
+{
+	if (!(adpt->phy.sgmii_ops && adpt->phy.sgmii_ops->init))
+		return 0;
+
+	return adpt->phy.sgmii_ops->init(adpt);
+}
+
+int emac_sgmii_open(struct emac_adapter *adpt)
+{
+	if (!(adpt->phy.sgmii_ops && adpt->phy.sgmii_ops->open))
+		return 0;
+
+	return adpt->phy.sgmii_ops->open(adpt);
+}
+
+void emac_sgmii_close(struct emac_adapter *adpt)
+{
+	if (!(adpt->phy.sgmii_ops && adpt->phy.sgmii_ops->close))
+		return;
+
+	adpt->phy.sgmii_ops->close(adpt);
+}
+
+int emac_sgmii_link_change(struct emac_adapter *adpt, bool link_state)
+{
+	if (!(adpt->phy.sgmii_ops && adpt->phy.sgmii_ops->link_change))
+		return 0;
+
+	return adpt->phy.sgmii_ops->link_change(adpt, link_state);
+}
+
+void emac_sgmii_reset(struct emac_adapter *adpt)
+{
+	if (!(adpt->phy.sgmii_ops && adpt->phy.sgmii_ops->reset))
+		return;
+
+	adpt->phy.sgmii_ops->reset(adpt);
+}
+
 /* Initialize the SGMII link between the internal and external PHYs. */
 static void emac_sgmii_link_init(struct emac_adapter *adpt)
 {
@@ -163,21 +203,21 @@ static void emac_sgmii_reset_prepare(struct emac_adapter *adpt)
 	msleep(50);
 }
 
-void emac_sgmii_reset(struct emac_adapter *adpt)
+static void emac_sgmii_common_reset(struct emac_adapter *adpt)
 {
 	int ret;
 
 	emac_sgmii_reset_prepare(adpt);
 	emac_sgmii_link_init(adpt);
 
-	ret = adpt->phy.initialize(adpt);
+	ret = emac_sgmii_init(adpt);
 	if (ret)
 		netdev_err(adpt->netdev,
 			   "could not reinitialize internal PHY (error=%i)\n",
 			   ret);
 }
 
-static int emac_sgmii_open(struct emac_adapter *adpt)
+static int emac_sgmii_common_open(struct emac_adapter *adpt)
 {
 	struct emac_sgmii *sgmii = &adpt->phy;
 	int ret;
@@ -201,43 +241,63 @@ static int emac_sgmii_open(struct emac_adapter *adpt)
 	return 0;
 }
 
-static int emac_sgmii_close(struct emac_adapter *adpt)
+static void emac_sgmii_common_close(struct emac_adapter *adpt)
 {
 	struct emac_sgmii *sgmii = &adpt->phy;
 
 	/* Make sure interrupts are disabled */
 	writel(0, sgmii->base + EMAC_SGMII_PHY_INTERRUPT_MASK);
 	free_irq(sgmii->irq, adpt);
-
-	return 0;
 }
 
 /* The error interrupts are only valid after the link is up */
-static int emac_sgmii_link_up(struct emac_adapter *adpt)
+static int emac_sgmii_common_link_change(struct emac_adapter *adpt, bool linkup)
 {
 	struct emac_sgmii *sgmii = &adpt->phy;
 	int ret;
 
-	/* Clear and enable interrupts */
-	ret = emac_sgmii_irq_clear(adpt, 0xff);
-	if (ret)
-		return ret;
+	if (linkup) {
+		/* Clear and enable interrupts */
+		ret = emac_sgmii_irq_clear(adpt, 0xff);
+		if (ret)
+			return ret;
 
-	writel(SGMII_ISR_MASK, sgmii->base + EMAC_SGMII_PHY_INTERRUPT_MASK);
+		writel(SGMII_ISR_MASK,
+		       sgmii->base + EMAC_SGMII_PHY_INTERRUPT_MASK);
+	} else {
+		/* Disable interrupts */
+		writel(0, sgmii->base + EMAC_SGMII_PHY_INTERRUPT_MASK);
+		synchronize_irq(sgmii->irq);
+	}
 
 	return 0;
 }
 
-static int emac_sgmii_link_down(struct emac_adapter *adpt)
-{
-	struct emac_sgmii *sgmii = &adpt->phy;
+static struct sgmii_ops fsm9900_ops = {
+	.init = emac_sgmii_init_fsm9900,
+	.open = emac_sgmii_common_open,
+	.close = emac_sgmii_common_close,
+	.link_change = emac_sgmii_common_link_change,
+	.reset = emac_sgmii_common_reset,
+};
 
-	/* Disable interrupts */
-	writel(0, sgmii->base + EMAC_SGMII_PHY_INTERRUPT_MASK);
-	synchronize_irq(sgmii->irq);
+static struct sgmii_ops qdf2432_ops = {
+	.init = emac_sgmii_init_qdf2432,
+	.open = emac_sgmii_common_open,
+	.close = emac_sgmii_common_close,
+	.link_change = emac_sgmii_common_link_change,
+	.reset = emac_sgmii_common_reset,
+};
 
-	return 0;
-}
+#ifdef CONFIG_ACPI
+static struct sgmii_ops qdf2400_ops = {
+	.init = emac_sgmii_init_qdf2400,
+	.open = emac_sgmii_common_open,
+	.close = emac_sgmii_common_close,
+	.link_change = emac_sgmii_common_link_change,
+	.reset = emac_sgmii_common_reset,
+};
+#endif
 
 static int emac_sgmii_acpi_match(struct device *dev, void *data)
 {
@@ -249,7 +309,7 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data)
 		{}
 	};
 	const struct acpi_device_id *id = acpi_match_device(match_table, dev);
-	emac_sgmii_function *initialize = data;
+	struct sgmii_ops **ops = data;
 
 	if (id) {
 		acpi_handle handle = ACPI_HANDLE(dev);
@@ -270,10 +330,10 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data)
 
 		switch (hrv) {
 		case 1:
-			*initialize = emac_sgmii_init_qdf2432;
+			*ops = &qdf2432_ops;
 			return 1;
 		case 2:
-			*initialize = emac_sgmii_init_qdf2400;
+			*ops = &qdf2400_ops;
 			return 1;
 		}
 	}
@@ -285,23 +345,15 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data)
 static const struct of_device_id emac_sgmii_dt_match[] = {
 	{
 		.compatible = "qcom,fsm9900-emac-sgmii",
-		.data = emac_sgmii_init_fsm9900,
+		.data = &fsm9900_ops,
 	},
 	{
 		.compatible = "qcom,qdf2432-emac-sgmii",
-		.data = emac_sgmii_init_qdf2432,
+		.data = &qdf2432_ops,
 	},
 	{}
 };
 
-/* Dummy function for systems without an internal PHY. This avoids having
- * to check for NULL pointers before calling the functions.
- */
-static int emac_sgmii_dummy(struct emac_adapter *adpt)
-{
-	return 0;
-}
-
 int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
 {
 	struct platform_device *sgmii_pdev = NULL;
@@ -312,22 +364,11 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
 	if (has_acpi_companion(&pdev->dev)) {
 		struct device *dev;
 
-		dev = device_find_child(&pdev->dev, &phy->initialize,
+		dev = device_find_child(&pdev->dev, &phy->sgmii_ops,
 					emac_sgmii_acpi_match);
 
 		if (!dev) {
 			dev_warn(&pdev->dev, "cannot find internal phy node\n");
-			/* There is typically no internal PHY on emulation
-			 * systems, so if we can't find the node, assume
-			 * we are on an emulation system and stub-out
-			 * support for the internal PHY.  These systems only
-			 * use ACPI.
-			 */
-			phy->open = emac_sgmii_dummy;
-			phy->close = emac_sgmii_dummy;
-			phy->link_up = emac_sgmii_dummy;
-			phy->link_down = emac_sgmii_dummy;
-
 			return 0;
 		}
 
@@ -355,14 +396,9 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
 			goto error_put_device;
 		}
 
-		phy->initialize = (emac_sgmii_function)match->data;
+		phy->sgmii_ops = (struct sgmii_ops *)match->data;
 	}
 
-	phy->open = emac_sgmii_open;
-	phy->close = emac_sgmii_close;
-	phy->link_up = emac_sgmii_link_up;
-	phy->link_down = emac_sgmii_link_down;
-
 	/* Base address is the first address */
 	res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0);
 	if (!res) {
@@ -386,7 +422,7 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt)
 		}
 	}
 
-	ret = phy->initialize(adpt);
+	ret = emac_sgmii_init(adpt);
 	if (ret)
 		goto error;
 
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h
index e7c0c3b2baa4..31ba21eb61d2 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h
+++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h
@@ -16,36 +16,44 @@
 struct emac_adapter;
 struct platform_device;
 
-typedef int (*emac_sgmii_function)(struct emac_adapter *adpt);
+/** emac_sgmii - internal emac phy
+ * @init initialization function
+ * @open called when the driver is opened
+ * @close called when the driver is closed
+ * @link_change called when the link state changes
+ */
+struct sgmii_ops {
+	int (*init)(struct emac_adapter *adpt);
+	int (*open)(struct emac_adapter *adpt);
+	void (*close)(struct emac_adapter *adpt);
+	int (*link_change)(struct emac_adapter *adpt, bool link_state);
+	void (*reset)(struct emac_adapter *adpt);
+};
 
 /** emac_sgmii - internal emac phy
  * @base base address
  * @digital per-lane digital block
  * @irq the interrupt number
  * @decode_error_count reference count of consecutive decode errors
- * @initialize initialization function
- * @open called when the driver is opened
- * @close called when the driver is closed
- * @link_up called when the link comes up
- * @link_down called when the link comes down
+ * @sgmii_ops sgmii ops
  */
 struct emac_sgmii {
 	void __iomem		*base;
 	void __iomem		*digital;
 	unsigned int		irq;
 	atomic_t		decode_error_count;
-	emac_sgmii_function	initialize;
-	emac_sgmii_function	open;
-	emac_sgmii_function	close;
-	emac_sgmii_function	link_up;
-	emac_sgmii_function	link_down;
+	struct	sgmii_ops	*sgmii_ops;
 };
 
 int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt);
-void emac_sgmii_reset(struct emac_adapter *adpt);
 
 int emac_sgmii_init_fsm9900(struct emac_adapter *adpt);
 int emac_sgmii_init_qdf2432(struct emac_adapter *adpt);
 int emac_sgmii_init_qdf2400(struct emac_adapter *adpt);
 
+int emac_sgmii_init(struct emac_adapter *adpt);
+int emac_sgmii_open(struct emac_adapter *adpt);
+void emac_sgmii_close(struct emac_adapter *adpt);
+int emac_sgmii_link_change(struct emac_adapter *adpt, bool link_state);
+void emac_sgmii_reset(struct emac_adapter *adpt);
 #endif
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c
index 13235baf4766..2a0cbc535a2e 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -253,7 +253,7 @@ static int emac_open(struct net_device *netdev)
 		return ret;
 	}
 
-	ret = adpt->phy.open(adpt);
+	ret = emac_sgmii_open(adpt);
 	if (ret) {
 		emac_mac_rx_tx_rings_free_all(adpt);
 		free_irq(irq->irq, irq);
@@ -264,7 +264,7 @@ static int emac_open(struct net_device *netdev)
 	if (ret) {
 		emac_mac_rx_tx_rings_free_all(adpt);
 		free_irq(irq->irq, irq);
-		adpt->phy.close(adpt);
+		emac_sgmii_close(adpt);
 		return ret;
 	}
 
@@ -278,7 +278,7 @@ static int emac_close(struct net_device *netdev)
 
 	mutex_lock(&adpt->reset_lock);
 
-	adpt->phy.close(adpt);
+	emac_sgmii_close(adpt);
 	emac_mac_down(adpt);
 	emac_mac_rx_tx_rings_free_all(adpt);
 
@@ -761,11 +761,10 @@ static void emac_shutdown(struct platform_device *pdev)
 {
 	struct net_device *netdev = dev_get_drvdata(&pdev->dev);
 	struct emac_adapter *adpt = netdev_priv(netdev);
-	struct emac_sgmii *sgmii = &adpt->phy;
 
 	if (netdev->flags & IFF_UP) {
 		/* Closing the SGMII turns off its interrupts */
-		sgmii->close(adpt);
+		emac_sgmii_close(adpt);
 
 		/* Resetting the MAC turns off all DMA and its interrupts */
 		emac_mac_reset(adpt);
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
index 0b5b5da80198..34ac45a774e7 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h
@@ -54,11 +54,24 @@ struct rmnet_pcpu_stats {
 	struct u64_stats_sync syncp;
 };
 
+struct rmnet_priv_stats {
+	u64 csum_ok;
+	u64 csum_valid_unset;
+	u64 csum_validation_failed;
+	u64 csum_err_bad_buffer;
+	u64 csum_err_invalid_ip_version;
+	u64 csum_err_invalid_transport;
+	u64 csum_fragmented_pkt;
+	u64 csum_skipped;
+	u64 csum_sw;
+};
+
 struct rmnet_priv {
 	u8 mux_id;
 	struct net_device *real_dev;
 	struct rmnet_pcpu_stats __percpu *pcpu_stats;
 	struct gro_cells gro_cells;
+	struct rmnet_priv_stats stats;
 };
 
 struct rmnet_port *rmnet_get_port(struct net_device *real_dev);
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index 6fcd586e9804..7fd86d40a337 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -148,7 +148,7 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
 
 	if (skb_headroom(skb) < required_headroom) {
 		if (pskb_expand_head(skb, required_headroom, 0, GFP_KERNEL))
-			goto fail;
+			return -ENOMEM;
 	}
 
 	if (port->data_format & RMNET_FLAGS_EGRESS_MAP_CKSUMV4)
@@ -156,17 +156,13 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
 
 	map_header = rmnet_map_add_map_header(skb, additional_header_len, 0);
 	if (!map_header)
-		goto fail;
+		return -ENOMEM;
 
 	map_header->mux_id = mux_id;
 
 	skb->protocol = htons(ETH_P_MAP);
 
 	return 0;
-
-fail:
-	kfree_skb(skb);
-	return -ENOMEM;
 }
 
 static void
@@ -228,15 +224,18 @@ void rmnet_egress_handler(struct sk_buff *skb)
 	mux_id = priv->mux_id;
 
 	port = rmnet_get_port(skb->dev);
-	if (!port) {
-		kfree_skb(skb);
-		return;
-	}
+	if (!port)
+		goto drop;
 
 	if (rmnet_map_egress_handler(skb, port, mux_id, orig_dev))
-		return;
+		goto drop;
 
 	rmnet_vnd_tx_fixup(skb, orig_dev);
 
 	dev_queue_xmit(skb);
+	return;
+
+drop:
+	this_cpu_inc(priv->pcpu_stats->stats.tx_drops);
+	kfree_skb(skb);
 }
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
index 78fdad0c6f76..3ee8ae9b6838 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
@@ -67,28 +67,20 @@ static void rmnet_map_send_ack(struct sk_buff *skb,
 			       struct rmnet_port *port)
 {
 	struct rmnet_map_control_command *cmd;
-	int xmit_status;
-
-	if (port->data_format & RMNET_FLAGS_INGRESS_MAP_CKSUMV4) {
-		if (skb->len < sizeof(struct rmnet_map_header) +
-		    RMNET_MAP_GET_LENGTH(skb) +
-		    sizeof(struct rmnet_map_dl_csum_trailer)) {
-			kfree_skb(skb);
-			return;
-		}
-
-		skb_trim(skb, skb->len -
-			 sizeof(struct rmnet_map_dl_csum_trailer));
-	}
+	struct net_device *dev = skb->dev;
+
+	if (port->data_format & RMNET_FLAGS_INGRESS_MAP_CKSUMV4)
+		skb_trim(skb,
+			 skb->len - sizeof(struct rmnet_map_dl_csum_trailer));
 
 	skb->protocol = htons(ETH_P_MAP);
 
 	cmd = RMNET_MAP_GET_CMD_START(skb);
 	cmd->cmd_type = type & 0x03;
 
-	netif_tx_lock(skb->dev);
-	xmit_status = skb->dev->netdev_ops->ndo_start_xmit(skb, skb->dev);
-	netif_tx_unlock(skb->dev);
+	netif_tx_lock(dev);
+	dev->netdev_ops->ndo_start_xmit(skb, dev);
+	netif_tx_unlock(dev);
 }
 
 /* Process MAP command frame and send N/ACK message as appropriate. Message cmd
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index a6ea09416f8d..57a9c314a665 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
@@ -48,7 +48,8 @@ static __sum16 *rmnet_map_get_csum_field(unsigned char protocol,
 
 static int
 rmnet_map_ipv4_dl_csum_trailer(struct sk_buff *skb,
-			       struct rmnet_map_dl_csum_trailer *csum_trailer)
+			       struct rmnet_map_dl_csum_trailer *csum_trailer,
+			       struct rmnet_priv *priv)
 {
 	__sum16 *csum_field, csum_temp, pseudo_csum, hdr_csum, ip_payload_csum;
 	u16 csum_value, csum_value_final;
@@ -58,19 +59,25 @@ rmnet_map_ipv4_dl_csum_trailer(struct sk_buff *skb,
 
 	ip4h = (struct iphdr *)(skb->data);
 	if ((ntohs(ip4h->frag_off) & IP_MF) ||
-	    ((ntohs(ip4h->frag_off) & IP_OFFSET) > 0))
+	    ((ntohs(ip4h->frag_off) & IP_OFFSET) > 0)) {
+		priv->stats.csum_fragmented_pkt++;
 		return -EOPNOTSUPP;
+	}
 
 	txporthdr = skb->data + ip4h->ihl * 4;
 
 	csum_field = rmnet_map_get_csum_field(ip4h->protocol, txporthdr);
 
-	if (!csum_field)
+	if (!csum_field) {
+		priv->stats.csum_err_invalid_transport++;
 		return -EPROTONOSUPPORT;
+	}
 
 	/* RFC 768 - Skip IPv4 UDP packets where sender checksum field is 0 */
-	if (*csum_field == 0 && ip4h->protocol == IPPROTO_UDP)
+	if (*csum_field == 0 && ip4h->protocol == IPPROTO_UDP) {
+		priv->stats.csum_skipped++;
 		return 0;
+	}
 
 	csum_value = ~ntohs(csum_trailer->csum_value);
 	hdr_csum = ~ip_fast_csum(ip4h, (int)ip4h->ihl);
@@ -102,16 +109,20 @@ rmnet_map_ipv4_dl_csum_trailer(struct sk_buff *skb,
 		}
 	}
 
-	if (csum_value_final == ntohs((__force __be16)*csum_field))
+	if (csum_value_final == ntohs((__force __be16)*csum_field)) {
+		priv->stats.csum_ok++;
 		return 0;
-	else
+	} else {
+		priv->stats.csum_validation_failed++;
 		return -EINVAL;
+	}
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static int
 rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
-			       struct rmnet_map_dl_csum_trailer *csum_trailer)
+			       struct rmnet_map_dl_csum_trailer *csum_trailer,
+			       struct rmnet_priv *priv)
 {
 	__sum16 *csum_field, ip6_payload_csum, pseudo_csum, csum_temp;
 	u16 csum_value, csum_value_final;
@@ -125,8 +136,10 @@ rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
 	txporthdr = skb->data + sizeof(struct ipv6hdr);
 	csum_field = rmnet_map_get_csum_field(ip6h->nexthdr, txporthdr);
 
-	if (!csum_field)
+	if (!csum_field) {
+		priv->stats.csum_err_invalid_transport++;
 		return -EPROTONOSUPPORT;
+	}
 
 	csum_value = ~ntohs(csum_trailer->csum_value);
 	ip6_hdr_csum = (__force __be16)
@@ -164,10 +177,13 @@ rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
 		}
 	}
 
-	if (csum_value_final == ntohs((__force __be16)*csum_field))
+	if (csum_value_final == ntohs((__force __be16)*csum_field)) {
+		priv->stats.csum_ok++;
 		return 0;
-	else
+	} else {
+		priv->stats.csum_validation_failed++;
 		return -EINVAL;
+	}
 }
 #endif
 
@@ -339,24 +355,34 @@ struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
  */
 int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len)
 {
+	struct rmnet_priv *priv = netdev_priv(skb->dev);
 	struct rmnet_map_dl_csum_trailer *csum_trailer;
 
-	if (unlikely(!(skb->dev->features & NETIF_F_RXCSUM)))
+	if (unlikely(!(skb->dev->features & NETIF_F_RXCSUM))) {
+		priv->stats.csum_sw++;
 		return -EOPNOTSUPP;
+	}
 
 	csum_trailer = (struct rmnet_map_dl_csum_trailer *)(skb->data + len);
 
-	if (!csum_trailer->valid)
+	if (!csum_trailer->valid) {
+		priv->stats.csum_valid_unset++;
 		return -EINVAL;
+	}
 
-	if (skb->protocol == htons(ETH_P_IP))
-		return rmnet_map_ipv4_dl_csum_trailer(skb, csum_trailer);
-	else if (skb->protocol == htons(ETH_P_IPV6))
+	if (skb->protocol == htons(ETH_P_IP)) {
+		return rmnet_map_ipv4_dl_csum_trailer(skb, csum_trailer, priv);
+	} else if (skb->protocol == htons(ETH_P_IPV6)) {
 #if IS_ENABLED(CONFIG_IPV6)
-		return rmnet_map_ipv6_dl_csum_trailer(skb, csum_trailer);
+		return rmnet_map_ipv6_dl_csum_trailer(skb, csum_trailer, priv);
 #else
+		priv->stats.csum_err_invalid_ip_version++;
 		return -EPROTONOSUPPORT;
 #endif
+	} else {
+		priv->stats.csum_err_invalid_ip_version++;
+		return -EPROTONOSUPPORT;
+	}
 
 	return 0;
 }
@@ -367,6 +393,7 @@ int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len)
 void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
 				      struct net_device *orig_dev)
 {
+	struct rmnet_priv *priv = netdev_priv(orig_dev);
 	struct rmnet_map_ul_csum_header *ul_header;
 	void *iphdr;
 
@@ -389,8 +416,11 @@ void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
 			rmnet_map_ipv6_ul_csum_header(iphdr, ul_header, skb);
 			return;
 #else
+			priv->stats.csum_err_invalid_ip_version++;
 			goto sw_csum;
 #endif
+		} else {
+			priv->stats.csum_err_invalid_ip_version++;
 		}
 	}
 
@@ -399,4 +429,6 @@ sw_csum:
 	ul_header->csum_insert_offset = 0;
 	ul_header->csum_enabled = 0;
 	ul_header->udp_ip4_ind = 0;
+
+	priv->stats.csum_sw++;
 }
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index 2ea16a088de8..b9a7548ec6a0 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -152,6 +152,56 @@ static const struct net_device_ops rmnet_vnd_ops = {
 	.ndo_get_stats64 = rmnet_get_stats64,
 };
 
+static const char rmnet_gstrings_stats[][ETH_GSTRING_LEN] = {
+	"Checksum ok",
+	"Checksum valid bit not set",
+	"Checksum validation failed",
+	"Checksum error bad buffer",
+	"Checksum error bad ip version",
+	"Checksum error bad transport",
+	"Checksum skipped on ip fragment",
+	"Checksum skipped",
+	"Checksum computed in software",
+};
+
+static void rmnet_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
+{
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(buf, &rmnet_gstrings_stats,
+		       sizeof(rmnet_gstrings_stats));
+		break;
+	}
+}
+
+static int rmnet_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(rmnet_gstrings_stats);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void rmnet_get_ethtool_stats(struct net_device *dev,
+				    struct ethtool_stats *stats, u64 *data)
+{
+	struct rmnet_priv *priv = netdev_priv(dev);
+	struct rmnet_priv_stats *st = &priv->stats;
+
+	if (!data)
+		return;
+
+	memcpy(data, st, ARRAY_SIZE(rmnet_gstrings_stats) * sizeof(u64));
+}
+
+static const struct ethtool_ops rmnet_ethtool_ops = {
+	.get_ethtool_stats = rmnet_get_ethtool_stats,
+	.get_strings = rmnet_get_strings,
+	.get_sset_count = rmnet_get_sset_count,
+};
+
 /* Called by kernel whenever a new rmnet<n> device is created. Sets MTU,
  * flags, ARP type, needed headroom, etc...
  */
@@ -170,6 +220,11 @@ void rmnet_vnd_setup(struct net_device *rmnet_dev)
 	rmnet_dev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST);
 
 	rmnet_dev->needs_free_netdev = true;
+	rmnet_dev->ethtool_ops = &rmnet_ethtool_ops;
+
+	/* This perm addr will be used as interface identifier by IPv6 */
+	rmnet_dev->addr_assign_type = NET_ADDR_RANDOM;
+	eth_random_addr(rmnet_dev->perm_addr);
 }
 
 /* Exposed API */