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Date: Fri, 20 Dec 2013 08:45:55 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Joseph Gasparakis <joseph.gasparakis@...el.com>,
netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next v2 06/16] i40e: Implementation of vxlan ndo's
From: Joseph Gasparakis <joseph.gasparakis@...el.com>
This adds the implementation for the vxlan ndo's. This allows
the hardware to do RX checksum offload for inner packets on the UDP
ports that vxlan notifies us about.
Signed-off-by: Joseph Gasparakis <joseph.gasparakis@...el.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/Kconfig | 1 +
drivers/net/ethernet/intel/i40e/i40e.h | 2 +
drivers/net/ethernet/intel/i40e/i40e_common.c | 57 +++++++++++++++
drivers/net/ethernet/intel/i40e/i40e_main.c | 92 ++++++++++++++++++++++++
drivers/net/ethernet/intel/i40e/i40e_prototype.h | 6 ++
drivers/net/ethernet/intel/i40e/i40e_type.h | 1 +
6 files changed, 159 insertions(+)
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 41a2fa2..38e47ed 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -244,6 +244,7 @@ config IXGBEVF
config I40E
tristate "Intel(R) Ethernet Controller XL710 Family support"
depends on PCI
+ depends on VXLAN || !VXLAN
---help---
This driver supports Intel(R) Ethernet Controller XL710 Family of
devices. For more information on how to identify your adapter, go
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 31dd265..5d88cf4 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -207,6 +207,8 @@ struct i40e_pf {
u8 atr_sample_rate;
bool wol_en;
+ __be16 vxlan_ports[I40E_MAX_PF_UDP_OFFLOAD_PORTS];
+
enum i40e_interrupt_policy int_policy;
u16 rx_itr_default;
u16 tx_itr_default;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c
index cba1eb4..ca58263 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_common.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_common.c
@@ -1671,6 +1671,63 @@ i40e_status i40e_aq_start_lldp(struct i40e_hw *hw,
}
/**
+ * i40e_aq_add_udp_tunnel
+ * @hw: pointer to the hw struct
+ * @udp_port: the UDP port to add
+ * @header_len: length of the tunneling header length in DWords
+ * @protocol_index: protocol index type
+ * @cmd_details: pointer to command details structure or NULL
+ **/
+i40e_status i40e_aq_add_udp_tunnel(struct i40e_hw *hw,
+ u16 udp_port, u8 header_len,
+ u8 protocol_index, u8 *filter_index,
+ struct i40e_asq_cmd_details *cmd_details)
+{
+ struct i40e_aq_desc desc;
+ struct i40e_aqc_add_udp_tunnel *cmd =
+ (struct i40e_aqc_add_udp_tunnel *)&desc.params.raw;
+ struct i40e_aqc_del_udp_tunnel_completion *resp =
+ (struct i40e_aqc_del_udp_tunnel_completion *)&desc.params.raw;
+ i40e_status status;
+
+ i40e_fill_default_direct_cmd_desc(&desc, i40e_aqc_opc_add_udp_tunnel);
+
+ cmd->udp_port = cpu_to_le16(udp_port);
+ cmd->header_len = header_len;
+ cmd->protocol_index = protocol_index;
+
+ status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
+
+ if (!status)
+ *filter_index = resp->index;
+
+ return status;
+}
+
+/**
+ * i40e_aq_del_udp_tunnel
+ * @hw: pointer to the hw struct
+ * @index: filter index
+ * @cmd_details: pointer to command details structure or NULL
+ **/
+i40e_status i40e_aq_del_udp_tunnel(struct i40e_hw *hw, u8 index,
+ struct i40e_asq_cmd_details *cmd_details)
+{
+ struct i40e_aq_desc desc;
+ struct i40e_aqc_remove_udp_tunnel *cmd =
+ (struct i40e_aqc_remove_udp_tunnel *)&desc.params.raw;
+ i40e_status status;
+
+ i40e_fill_default_direct_cmd_desc(&desc, i40e_aqc_opc_del_udp_tunnel);
+
+ cmd->index = index;
+
+ status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
+
+ return status;
+}
+
+/**
* i40e_aq_delete_element - Delete switch element
* @hw: pointer to the hw struct
* @seid: the SEID to delete from the switch
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index b0cfb4c..7b759a6 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -27,6 +27,9 @@
/* Local includes */
#include "i40e.h"
+#if IS_ENABLED(CONFIG_VXLAN)
+#include "net/vxlan.h"
+#endif
const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
@@ -3993,6 +3996,9 @@ static int i40e_open(struct net_device *netdev)
"couldn't set broadcast err %d aq_err %d\n",
err, pf->hw.aq.asq_last_status);
}
+#if IS_ENABLED(CONFIG_VXLAN)
+ vxlan_get_rx_port(netdev);
+#endif
return 0;
@@ -5900,6 +5906,90 @@ static int i40e_set_features(struct net_device *netdev,
return 0;
}
+/**
+ * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
+ * @pf: board private structure
+ * @port: The UDP port to look up
+ *
+ * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
+ **/
+static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
+{
+ u8 i;
+
+ for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
+ if (pf->vxlan_ports[i] == port)
+ return i;
+ }
+
+ return i;
+}
+
+/**
+ * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
+ * @netdev: This physical port's netdev
+ * @sa_family: Socket Family that VXLAN is notifying us about
+ * @port: New UDP port number that VXLAN started listening to
+ **/
+static void i40e_add_vxlan_port(struct net_device *netdev,
+ sa_family_t sa_family, __be16 port)
+{
+ struct i40e_netdev_priv *np = netdev_priv(netdev);
+ struct i40e_vsi *vsi = np->vsi;
+ struct i40e_pf *pf = vsi->back;
+ const int vxlan_hdr_qwords = 4;
+ struct i40e_hw *hw = &pf->hw;
+ i40e_status aq_ret;
+ u8 filter_index;
+
+ if (sa_family == AF_INET6)
+ return;
+
+ aq_ret = i40e_aq_add_udp_tunnel(hw, ntohs(port), vxlan_hdr_qwords,
+ I40E_AQC_TUNNEL_TYPE_UDP, &filter_index,
+ NULL);
+
+ if (!aq_ret && filter_index < I40E_MAX_PF_UDP_OFFLOAD_PORTS)
+ pf->vxlan_ports[filter_index] = port;
+ else
+ dev_warn(&pf->pdev->dev, "Could not use port %d for VXLAN offload\n",
+ ntohs(port));
+}
+
+/**
+ * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
+ * @netdev: This physical port's netdev
+ * @sa_family: Socket Family that VXLAN is notifying us about
+ * @port: UDP port number that VXLAN stopped listening to
+ **/
+static void i40e_del_vxlan_port(struct net_device *netdev,
+ sa_family_t sa_family, __be16 port)
+{
+ struct i40e_netdev_priv *np = netdev_priv(netdev);
+ struct i40e_vsi *vsi = np->vsi;
+ struct i40e_pf *pf = vsi->back;
+ struct i40e_hw *hw = &pf->hw;
+ i40e_status aq_ret;
+ u8 filter_index;
+
+ if (sa_family == AF_INET6)
+ return;
+
+ filter_index = i40e_get_vxlan_port_idx(pf, port);
+
+ if (filter_index < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
+ aq_ret = i40e_aq_del_udp_tunnel(hw, filter_index, NULL);
+ if (!aq_ret)
+ pf->vxlan_ports[filter_index] = 0;
+ else
+ dev_warn(&pf->pdev->dev, "Could not remove VXLAN port %d\n",
+ ntohs(port));
+ } else {
+ dev_warn(&pf->pdev->dev, "Received notification to remove VXLAN port %d but port was not added before.\n",
+ ntohs(port));
+ }
+}
+
static const struct net_device_ops i40e_netdev_ops = {
.ndo_open = i40e_open,
.ndo_stop = i40e_close,
@@ -5921,6 +6011,8 @@ static const struct net_device_ops i40e_netdev_ops = {
.ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan,
.ndo_set_vf_tx_rate = i40e_ndo_set_vf_bw,
.ndo_get_vf_config = i40e_ndo_get_vf_config,
+ .ndo_add_vxlan_port = i40e_add_vxlan_port,
+ .ndo_del_vxlan_port = i40e_del_vxlan_port,
};
/**
diff --git a/drivers/net/ethernet/intel/i40e/i40e_prototype.h b/drivers/net/ethernet/intel/i40e/i40e_prototype.h
index db7bf93..5c458bb 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_prototype.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_prototype.h
@@ -157,6 +157,12 @@ i40e_status i40e_aq_stop_lldp(struct i40e_hw *hw, bool shutdown_agent,
struct i40e_asq_cmd_details *cmd_details);
i40e_status i40e_aq_start_lldp(struct i40e_hw *hw,
struct i40e_asq_cmd_details *cmd_details);
+i40e_status i40e_aq_add_udp_tunnel(struct i40e_hw *hw,
+ u16 udp_port, u8 header_len,
+ u8 protocol_index, u8 *filter_index,
+ struct i40e_asq_cmd_details *cmd_details);
+i40e_status i40e_aq_del_udp_tunnel(struct i40e_hw *hw, u8 index,
+ struct i40e_asq_cmd_details *cmd_details);
i40e_status i40e_aq_delete_element(struct i40e_hw *hw, u16 seid,
struct i40e_asq_cmd_details *cmd_details);
i40e_status i40e_aq_mac_address_write(struct i40e_hw *hw,
diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h
index d683c30..bb960cd 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_type.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_type.h
@@ -59,6 +59,7 @@
#define I40E_MAX_VSI_QP 16
#define I40E_MAX_VF_VSI 3
#define I40E_MAX_CHAINED_RX_BUFFERS 5
+#define I40E_MAX_PF_UDP_OFFLOAD_PORTS 16
/* Max default timeout in ms, */
#define I40E_MAX_NVM_TIMEOUT 18000
--
1.8.3.1
--
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