From 424eb834a9be49273c4b32d0d6395dfdbe768a1a Mon Sep 17 00:00:00 2001
From: Salil Mehta <salil.mehta@huawei.com>
Date: Thu, 14 Dec 2017 18:03:06 +0000
Subject: [PATCH] net: hns3: Unified HNS3 {VF|PF} Ethernet Driver for hip08 SoC
Most of the NAPI handling interface, skb buffer management,
management of the RX/TX descriptors, ethool interface etc.
has quite a bit of code which is common to VF and PF driver.
This patch makes the exisitng PF's HNS3 ENET driver as the
common ENET driver for both Virtual & Physical Function. This
will help in reduction of redundancy and better management of
code.
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/hisilicon/hns3/Makefile | 5 +++++
drivers/net/ethernet/hisilicon/hns3/hnae3.c | 14 ++++++++++--
drivers/net/ethernet/hisilicon/hns3/hnae3.h | 7 +++---
.../hisilicon/hns3/{hns3pf => }/hns3_dcbnl.c | 2 +-
.../hisilicon/hns3/{hns3pf => }/hns3_enet.c | 2 ++
.../hisilicon/hns3/{hns3pf => }/hns3_enet.h | 0
.../hns3/{hns3pf => }/hns3_ethtool.c | 22 ++++++++++++++++++-
.../ethernet/hisilicon/hns3/hns3pf/Makefile | 5 -----
.../hisilicon/hns3/hns3vf/hclgevf_main.c | 1 +
9 files changed, 46 insertions(+), 12 deletions(-)
rename drivers/net/ethernet/hisilicon/hns3/{hns3pf => }/hns3_dcbnl.c (97%)
rename drivers/net/ethernet/hisilicon/hns3/{hns3pf => }/hns3_enet.c (99%)
rename drivers/net/ethernet/hisilicon/hns3/{hns3pf => }/hns3_enet.h (100%)
rename drivers/net/ethernet/hisilicon/hns3/{hns3pf => }/hns3_ethtool.c (97%)
diff --git a/drivers/net/ethernet/hisilicon/hns3/Makefile b/drivers/net/ethernet/hisilicon/hns3/Makefile
index c45094513c871f..002534f12b661d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/Makefile
+++ b/drivers/net/ethernet/hisilicon/hns3/Makefile
@@ -7,3 +7,8 @@ obj-$(CONFIG_HNS3) += hns3pf/
obj-$(CONFIG_HNS3) += hns3vf/
obj-$(CONFIG_HNS3) += hnae3.o
+
+obj-$(CONFIG_HNS3_ENET) += hns3.o
+hns3-objs = hns3_enet.o hns3_ethtool.o
+
+hns3-$(CONFIG_HNS3_DCB) += hns3_dcbnl.o
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
index 5bcb2238acb2b1..02145f2de82030 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
@@ -196,9 +196,18 @@ 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;
- int ret = 0;
+ int ret = 0, lock_acquired;
+
+ /* we can get deadlocked if SRIOV is being enabled in context to probe
+ * and probe gets called again in same context. This can happen when
+ * pci_enable_sriov() is called to create VFs from PF probes context.
+ * Therefore, for simplicity uniformly defering further probing in all
+ * cases where we detect contention.
+ */
+ lock_acquired = mutex_trylock(&hnae3_common_lock);
+ if (!lock_acquired)
+ return -EPROBE_DEFER;
- mutex_lock(&hnae3_common_lock);
list_add_tail(&ae_dev->node, &hnae3_ae_dev_list);
/* Check if there are matched ae_algo */
@@ -211,6 +220,7 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev)
if (!ae_dev->ops) {
dev_err(&ae_dev->pdev->dev, "ae_dev ops are null\n");
+ ret = -EOPNOTSUPP;
goto out_err;
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 67c59e1039f22c..a9e2b32834c58f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -452,9 +452,10 @@ struct hnae3_unic_private_info {
struct hnae3_queue **tqp; /* array base of all TQPs of this instance */
};
-#define HNAE3_SUPPORT_MAC_LOOPBACK 1
-#define HNAE3_SUPPORT_PHY_LOOPBACK 2
-#define HNAE3_SUPPORT_SERDES_LOOPBACK 4
+#define HNAE3_SUPPORT_MAC_LOOPBACK BIT(0)
+#define HNAE3_SUPPORT_PHY_LOOPBACK BIT(1)
+#define HNAE3_SUPPORT_SERDES_LOOPBACK BIT(2)
+#define HNAE3_SUPPORT_VF BIT(3)
struct hnae3_handle {
struct hnae3_client *client;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_dcbnl.c b/drivers/net/ethernet/hisilicon/hns3/hns3_dcbnl.c
similarity index 97%
rename from drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_dcbnl.c
rename to drivers/net/ethernet/hisilicon/hns3/hns3_dcbnl.c
index 925619a7c50abe..eb82700da7d0db 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_dcbnl.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_dcbnl.c
@@ -93,7 +93,7 @@ void hns3_dcbnl_setup(struct hnae3_handle *handle)
{
struct net_device *dev = handle->kinfo.netdev;
- if (!handle->kinfo.dcb_ops)
+ if ((!handle->kinfo.dcb_ops) || (handle->flags & HNAE3_SUPPORT_VF))
return;
dev->dcbnl_ops = &hns3_dcbnl_ops;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
similarity index 99%
rename from drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
rename to drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 59415090ff0f78..c2c13238db526c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -52,6 +52,8 @@ static const struct pci_device_id hns3_pci_tbl[] = {
HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
{PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC),
HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0},
+ {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF), 0},
/* required last entry */
{0, }
};
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
similarity index 100%
rename from drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.h
rename to drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
similarity index 97%
rename from drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_ethtool.c
rename to drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index a21470c72da34c..65a69b4394570a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -849,6 +849,21 @@ static int hns3_nway_reset(struct net_device *netdev)
return genphy_restart_aneg(phy);
}
+static const struct ethtool_ops hns3vf_ethtool_ops = {
+ .get_drvinfo = hns3_get_drvinfo,
+ .get_ringparam = hns3_get_ringparam,
+ .set_ringparam = hns3_set_ringparam,
+ .get_strings = hns3_get_strings,
+ .get_ethtool_stats = hns3_get_stats,
+ .get_sset_count = hns3_get_sset_count,
+ .get_rxnfc = hns3_get_rxnfc,
+ .get_rxfh_key_size = hns3_get_rss_key_size,
+ .get_rxfh_indir_size = hns3_get_rss_indir_size,
+ .get_rxfh = hns3_get_rss,
+ .set_rxfh = hns3_set_rss,
+ .get_link_ksettings = hns3_get_link_ksettings,
+};
+
static const struct ethtool_ops hns3_ethtool_ops = {
.self_test = hns3_self_test,
.get_drvinfo = hns3_get_drvinfo,
@@ -872,5 +887,10 @@ static const struct ethtool_ops hns3_ethtool_ops = {
void hns3_ethtool_set_ops(struct net_device *netdev)
{
- netdev->ethtool_ops = &hns3_ethtool_ops;
+ struct hnae3_handle *h = hns3_get_handle(netdev);
+
+ if (h->flags & HNAE3_SUPPORT_VF)
+ netdev->ethtool_ops = &hns3vf_ethtool_ops;
+ else
+ netdev->ethtool_ops = &hns3_ethtool_ops;
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
index d2b20d01a58c5d..d077fa02b66e36 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
@@ -8,8 +8,3 @@ obj-$(CONFIG_HNS3_HCLGE) += hclge.o
hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o
hclge-$(CONFIG_HNS3_DCB) += hclge_dcb.o
-
-obj-$(CONFIG_HNS3_ENET) += hns3.o
-hns3-objs = hns3_enet.o hns3_ethtool.o
-
-hns3-$(CONFIG_HNS3_DCB) += hns3_dcbnl.o
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index f5a2a69f82491f..31866057bc7def 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -310,6 +310,7 @@ static int hclgevf_set_handle_info(struct hclgevf_dev *hdev)
nic->ae_algo = &ae_algovf;
nic->pdev = hdev->pdev;
nic->numa_node_mask = hdev->numa_node_mask;
+ nic->flags |= HNAE3_SUPPORT_VF;
if (hdev->ae_dev->dev_type != HNAE3_DEV_KNIC) {
dev_err(&hdev->pdev->dev, "unsupported device type %d\n",
--
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