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

Pull networking updates from David Miller:

 1) Support ipv6 checksum offload in sunvnet driver, from Shannon
    Nelson.

 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
    Dumazet.

 3) Allow generic XDP to work on virtual devices, from John Fastabend.

 4) Add bpf device maps and XDP_REDIRECT, which can be used to build
    arbitrary switching frameworks using XDP. From John Fastabend.

 5) Remove UFO offloads from the tree, gave us little other than bugs.

 6) Remove the IPSEC flow cache, from Florian Westphal.

 7) Support ipv6 route offload in mlxsw driver.

 8) Support VF representors in bnxt_en, from Sathya Perla.

 9) Add support for forward error correction modes to ethtool, from
    Vidya Sagar Ravipati.

10) Add time filter for packet scheduler action dumping, from Jamal Hadi
    Salim.

11) Extend the zerocopy sendmsg() used by virtio and tap to regular
    sockets via MSG_ZEROCOPY. From Willem de Bruijn.

12) Significantly rework value tracking in the BPF verifier, from Edward
    Cree.

13) Add new jump instructions to eBPF, from Daniel Borkmann.

14) Rework rtnetlink plumbing so that operations can be run without
    taking the RTNL semaphore. From Florian Westphal.

15) Support XDP in tap driver, from Jason Wang.

16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.

17) Add Huawei hinic ethernet driver.

18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
    Delalande.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
  i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
  i40e: avoid NVM acquire deadlock during NVM update
  drivers: net: xgene: Remove return statement from void function
  drivers: net: xgene: Configure tx/rx delay for ACPI
  drivers: net: xgene: Read tx/rx delay for ACPI
  rocker: fix kcalloc parameter order
  rds: Fix non-atomic operation on shared flag variable
  net: sched: don't use GFP_KERNEL under spin lock
  vhost_net: correctly check tx avail during rx busy polling
  net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
  rxrpc: Make service connection lookup always check for retry
  net: stmmac: Delete dead code for MDIO registration
  gianfar: Fix Tx flow control deactivation
  cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
  cxgb4: Fix pause frame count in t4_get_port_stats
  cxgb4: fix memory leak
  tun: rename generic_xdp to skb_xdp
  tun: reserve extra headroom only when XDP is set
  net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
  net: dsa: bcm_sf2: Advertise number of egress queues
  ...

1 files changed, 300 insertions, 0 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
new file mode 100644
index 0000000..59efbd6
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (c) 2016-2017 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+#include "hnae3.h"
+
+static LIST_HEAD(hnae3_ae_algo_list);
+static LIST_HEAD(hnae3_client_list);
+static LIST_HEAD(hnae3_ae_dev_list);
+
+/* we are keeping things simple and using single lock for all the
+ * list. This is a non-critical code so other updations, if happen
+ * in parallel, can wait.
+ */
+static DEFINE_MUTEX(hnae3_common_lock);
+
+static bool hnae3_client_match(enum hnae3_client_type client_type,
+			       enum hnae3_dev_type dev_type)
+{
+	if ((dev_type == HNAE3_DEV_KNIC) && (client_type == HNAE3_CLIENT_KNIC ||
+					     client_type == HNAE3_CLIENT_ROCE))
+		return true;
+
+	if (dev_type == HNAE3_DEV_UNIC && client_type == HNAE3_CLIENT_UNIC)
+		return true;
+
+	return false;
+}
+
+static int hnae3_match_n_instantiate(struct hnae3_client *client,
+				     struct hnae3_ae_dev *ae_dev,
+				     bool is_reg, bool *matched)
+{
+	int ret;
+
+	*matched = false;
+
+	/* check if this client matches the type of ae_dev */
+	if (!(hnae3_client_match(client->type, ae_dev->dev_type) &&
+	      hnae_get_bit(ae_dev->flag, HNAE3_DEV_INITED_B))) {
+		return 0;
+	}
+	/* there is a match of client and dev */
+	*matched = true;
+
+	/* now, (un-)instantiate client by calling lower layer */
+	if (is_reg) {
+		ret = ae_dev->ops->init_client_instance(client, ae_dev);
+		if (ret)
+			dev_err(&ae_dev->pdev->dev,
+				"fail to instantiate client\n");
+		return ret;
+	}
+
+	ae_dev->ops->uninit_client_instance(client, ae_dev);
+	return 0;
+}
+
+int hnae3_register_client(struct hnae3_client *client)
+{
+	struct hnae3_client *client_tmp;
+	struct hnae3_ae_dev *ae_dev;
+	bool matched;
+	int ret = 0;
+
+	mutex_lock(&hnae3_common_lock);
+	/* one system should only have one client for every type */
+	list_for_each_entry(client_tmp, &hnae3_client_list, node) {
+		if (client_tmp->type == client->type)
+			goto exit;
+	}
+
+	list_add_tail(&client->node, &hnae3_client_list);
+
+	/* initialize the client on every matched port */
+	list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
+		/* if the client could not be initialized on current port, for
+		 * any error reasons, move on to next available port
+		 */
+		ret = hnae3_match_n_instantiate(client, ae_dev, true, &matched);
+		if (ret)
+			dev_err(&ae_dev->pdev->dev,
+				"match and instantiation failed for port\n");
+	}
+
+exit:
+	mutex_unlock(&hnae3_common_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(hnae3_register_client);
+
+void hnae3_unregister_client(struct hnae3_client *client)
+{
+	struct hnae3_ae_dev *ae_dev;
+	bool matched;
+
+	mutex_lock(&hnae3_common_lock);
+	/* un-initialize the client on every matched port */
+	list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
+		hnae3_match_n_instantiate(client, ae_dev, false, &matched);
+	}
+
+	list_del(&client->node);
+	mutex_unlock(&hnae3_common_lock);
+}
+EXPORT_SYMBOL(hnae3_unregister_client);
+
+/* hnae3_register_ae_algo - register a AE algorithm to hnae3 framework
+ * @ae_algo: AE algorithm
+ * NOTE: the duplicated name will not be checked
+ */
+int hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo)
+{
+	const struct pci_device_id *id;
+	struct hnae3_ae_dev *ae_dev;
+	struct hnae3_client *client;
+	bool matched;
+	int ret = 0;
+
+	mutex_lock(&hnae3_common_lock);
+
+	list_add_tail(&ae_algo->node, &hnae3_ae_algo_list);
+
+	/* Check if this algo/ops matches the list of ae_devs */
+	list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
+		id = pci_match_id(ae_algo->pdev_id_table, ae_dev->pdev);
+		if (!id)
+			continue;
+
+		/* ae_dev init should set flag */
+		ae_dev->ops = ae_algo->ops;
+		ret = ae_algo->ops->init_ae_dev(ae_dev);
+		if (ret) {
+			dev_err(&ae_dev->pdev->dev, "init ae_dev error.\n");
+			continue;
+		}
+
+		hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 1);
+
+		/* check the client list for the match with this ae_dev type and
+		 * initialize the figure out client instance
+		 */
+		list_for_each_entry(client, &hnae3_client_list, node) {
+			ret = hnae3_match_n_instantiate(client, ae_dev, true,
+							&matched);
+			if (ret)
+				dev_err(&ae_dev->pdev->dev,
+					"match and instantiation failed\n");
+			if (matched)
+				break;
+		}
+	}
+
+	mutex_unlock(&hnae3_common_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(hnae3_register_ae_algo);
+
+/* hnae3_unregister_ae_algo - unregisters a AE algorithm
+ * @ae_algo: the AE algorithm to unregister
+ */
+void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo)
+{
+	const struct pci_device_id *id;
+	struct hnae3_ae_dev *ae_dev;
+	struct hnae3_client *client;
+	bool matched;
+
+	mutex_lock(&hnae3_common_lock);
+	/* Check if there are matched ae_dev */
+	list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
+		id = pci_match_id(ae_algo->pdev_id_table, ae_dev->pdev);
+		if (!id)
+			continue;
+
+		/* check the client list for the match with this ae_dev type and
+		 * un-initialize the figure out client instance
+		 */
+		list_for_each_entry(client, &hnae3_client_list, node) {
+			hnae3_match_n_instantiate(client, ae_dev, false,
+						  &matched);
+			if (matched)
+				break;
+		}
+
+		ae_algo->ops->uninit_ae_dev(ae_dev);
+		hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0);
+	}
+
+	list_del(&ae_algo->node);
+	mutex_unlock(&hnae3_common_lock);
+}
+EXPORT_SYMBOL(hnae3_unregister_ae_algo);
+
+/* hnae3_register_ae_dev - registers a AE device to hnae3 framework
+ * @ae_dev: the AE device
+ * NOTE: the duplicated name will not be checked
+ */
+int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev)
+{
+	const struct pci_device_id *id;
+	struct hnae3_ae_algo *ae_algo;
+	struct hnae3_client *client;
+	bool matched;
+	int ret = 0;
+
+	mutex_lock(&hnae3_common_lock);
+	list_add_tail(&ae_dev->node, &hnae3_ae_dev_list);
+
+	/* Check if there are matched ae_algo */
+	list_for_each_entry(ae_algo, &hnae3_ae_algo_list, node) {
+		id = pci_match_id(ae_algo->pdev_id_table, ae_dev->pdev);
+		if (!id)
+			continue;
+
+		ae_dev->ops = ae_algo->ops;
+
+		if (!ae_dev->ops) {
+			dev_err(&ae_dev->pdev->dev, "ae_dev ops are null\n");
+			goto out_err;
+		}
+
+		/* ae_dev init should set flag */
+		ret = ae_dev->ops->init_ae_dev(ae_dev);
+		if (ret) {
+			dev_err(&ae_dev->pdev->dev, "init ae_dev error\n");
+			goto out_err;
+		}
+
+		hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 1);
+		break;
+	}
+
+	/* check the client list for the match with this ae_dev type and
+	 * initialize the figure out client instance
+	 */
+	list_for_each_entry(client, &hnae3_client_list, node) {
+		ret = hnae3_match_n_instantiate(client, ae_dev, true,
+						&matched);
+		if (ret)
+			dev_err(&ae_dev->pdev->dev,
+				"match and instantiation failed\n");
+		if (matched)
+			break;
+	}
+
+out_err:
+	mutex_unlock(&hnae3_common_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(hnae3_register_ae_dev);
+
+/* hnae3_unregister_ae_dev - unregisters a AE device
+ * @ae_dev: the AE device to unregister
+ */
+void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev)
+{
+	const struct pci_device_id *id;
+	struct hnae3_ae_algo *ae_algo;
+	struct hnae3_client *client;
+	bool matched;
+
+	mutex_lock(&hnae3_common_lock);
+	/* Check if there are matched ae_algo */
+	list_for_each_entry(ae_algo, &hnae3_ae_algo_list, node) {
+		id = pci_match_id(ae_algo->pdev_id_table, ae_dev->pdev);
+		if (!id)
+			continue;
+
+		list_for_each_entry(client, &hnae3_client_list, node) {
+			hnae3_match_n_instantiate(client, ae_dev, false,
+						  &matched);
+			if (matched)
+				break;
+		}
+
+		ae_algo->ops->uninit_ae_dev(ae_dev);
+		hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0);
+	}
+
+	list_del(&ae_dev->node);
+	mutex_unlock(&hnae3_common_lock);
+}
+EXPORT_SYMBOL(hnae3_unregister_ae_dev);
+
+MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("HNAE3(Hisilicon Network Acceleration Engine) Framework");