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Date: Mon, 30 Nov 2015 21:53:11 +0000
From: "Singhai, Anjali" <anjali.singhai@...el.com>
To: Tom Herbert <tom@...bertland.com>
CC: Linux Kernel Network Developers <netdev@...r.kernel.org>,
Jesse Gross <jesse@...nel.org>,
"Patil, Kiran" <kiran.patil@...el.com>
Subject: RE: [PATCH v1 1/6] net: Generalize udp based tunnel offload
-----Original Message-----
From: Tom Herbert [mailto:tom@...bertland.com]
Sent: Monday, November 30, 2015 8:36 AM
To: Singhai, Anjali <anjali.singhai@...el.com>
Cc: Linux Kernel Network Developers <netdev@...r.kernel.org>; Jesse Gross <jesse@...nel.org>; Patil, Kiran <kiran.patil@...el.com>
Subject: Re: [PATCH v1 1/6] net: Generalize udp based tunnel offload
On Mon, Nov 23, 2015 at 1:02 PM, Anjali Singhai Jain <anjali.singhai@...el.com> wrote:
> Replace add/del ndo ops for vxlan_port with tunnel_port so that all
> UDP based tunnels can use the same ndo op. Add a parameter to pass
> tunnel type to the ndo_op.
>
Please consider using RX ntuple filters for this instead of a new ndo op. The vxlan ndo op essentailly implements a limited filter with a rule to match a destination UDP port and the the action of processing the packet as vxlan. ntuple filters generalizes that so that the filtering becomes arbitrary. We'll need the ability to filter on 4-tuple when we implement tunnels to go through firewalls or for offloading other UDP protocols such SPUD or QUIC.
Tom
- Tom I am not sure I agree with this suggestion. The easiest way to let the hardware know about port to protocol mapping in case of udp-based tunnels is when we add udp offloads for the ports aka gro etc in the stack. This way the user gets benefit of tunnel offloads from the HWs that support it without having to do any extra filter setups from ethtool. Just like ip/tcp/udp checksum and TSO support, the user does not have to turn this ON specifically if they plan to use those protocols (of course they can turn it off). Besides these are not true filters in that sense, they are not used to guide packets to any particular destination in this case, rather used to identify packets for checksum and TSO purpose.
And I agree with your patch series that reduces protocol ossification of the stack and driver interface. My point is this set of patches help with that goal and not really hurt because any new tunnel support would mean no change in the interface and just a new type in the enum and then the drivers can decide to do the magic setup in the HW in their driver based on this new type without ever having to touch the interface. So try to explain to me why this is causing protocol ossification because I don't believe so. And I think the ntupe interface should remain for the purpose of filters which are used to route packet or drop them. Not for packet identification and checksum offload support.
> Change all drivers to use the generalized udp tunnel offload
>
> Patch was compile tested with x86_64_defconfig.
>
> Signed-off-by: Kiran Patil <kiran.patil@...el.com>
> Signed-off-by: Anjali Singhai Jain <anjali.singhai@...el.com>
> ---
> drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 15 ++++++---
> drivers/net/ethernet/broadcom/bnxt/bnxt.c | 13 +++++---
> drivers/net/ethernet/emulex/benet/be_main.c | 14 +++++---
> drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 27 ++++++++++++----
> drivers/net/ethernet/intel/i40e/i40e_main.c | 41 +++++++++++++++++-------
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 17 +++++++---
> drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 21 ++++++++----
> drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 17 +++++++---
> drivers/net/vxlan.c | 23 +++++++------
> include/linux/netdevice.h | 34 ++++++++++----------
> include/net/udp_tunnel.h | 6 ++++
> 11 files changed, 157 insertions(+), 71 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> index 2273576..ad2782f 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> @@ -47,6 +47,7 @@
> #include <net/ip.h>
> #include <net/ipv6.h>
> #include <net/tcp.h>
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
> #include <net/checksum.h>
> #include <net/ip6_checksum.h>
> @@ -10124,11 +10125,14 @@ static void __bnx2x_add_vxlan_port(struct
> bnx2x *bp, u16 port) }
>
> static void bnx2x_add_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct bnx2x *bp = netdev_priv(netdev);
> u16 t_port = ntohs(port);
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> __bnx2x_add_vxlan_port(bp, t_port); }
>
> @@ -10152,11 +10156,14 @@ static void __bnx2x_del_vxlan_port(struct
> bnx2x *bp, u16 port) }
>
> static void bnx2x_del_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct bnx2x *bp = netdev_priv(netdev);
> u16 t_port = ntohs(port);
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> __bnx2x_del_vxlan_port(bp, t_port); } #endif @@ -13008,8
> +13015,8 @@ static const struct net_device_ops bnx2x_netdev_ops = {
> .ndo_set_vf_link_state = bnx2x_set_vf_link_state,
> .ndo_features_check = bnx2x_features_check,
> #ifdef CONFIG_BNX2X_VXLAN
> - .ndo_add_vxlan_port = bnx2x_add_vxlan_port,
> - .ndo_del_vxlan_port = bnx2x_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = bnx2x_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = bnx2x_del_vxlan_port,
> #endif
> };
>
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> index f2d0dc9..5b96ddf 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> @@ -5421,7 +5421,7 @@ static void bnxt_cfg_ntp_filters(struct bnxt
> *bp) #endif /* CONFIG_RFS_ACCEL */
>
> static void bnxt_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct bnxt *bp = netdev_priv(dev);
>
> @@ -5431,6 +5431,9 @@ static void bnxt_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> if (sa_family != AF_INET6 && sa_family != AF_INET)
> return;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (bp->vxlan_port_cnt && bp->vxlan_port != port)
> return;
>
> @@ -5443,7 +5446,7 @@ static void bnxt_add_vxlan_port(struct
> net_device *dev, sa_family_t sa_family, }
>
> static void bnxt_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct bnxt *bp = netdev_priv(dev);
>
> @@ -5453,6 +5456,8 @@ static void bnxt_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> if (sa_family != AF_INET6 && sa_family != AF_INET)
> return;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> if (bp->vxlan_port_cnt && bp->vxlan_port == port) {
> bp->vxlan_port_cnt--;
>
> @@ -5491,8 +5496,8 @@ static const struct net_device_ops
> bnxt_netdev_ops = { #ifdef CONFIG_RFS_ACCEL
> .ndo_rx_flow_steer = bnxt_rx_flow_steer,
> #endif
> - .ndo_add_vxlan_port = bnxt_add_vxlan_port,
> - .ndo_del_vxlan_port = bnxt_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = bnxt_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = bnxt_del_vxlan_port,
> #ifdef CONFIG_NET_RX_BUSY_POLL
> .ndo_busy_poll = bnxt_busy_poll,
> #endif
> diff --git a/drivers/net/ethernet/emulex/benet/be_main.c
> b/drivers/net/ethernet/emulex/benet/be_main.c
> index 4cab887..e699deca 100644
> --- a/drivers/net/ethernet/emulex/benet/be_main.c
> +++ b/drivers/net/ethernet/emulex/benet/be_main.c
> @@ -23,6 +23,7 @@
> #include <linux/aer.h>
> #include <linux/if_bridge.h>
> #include <net/busy_poll.h>
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
>
> MODULE_VERSION(DRV_VER);
> @@ -5175,12 +5176,15 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
> * until after all the tunnels are removed.
> */
> static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct be_adapter *adapter = netdev_priv(netdev);
> struct device *dev = &adapter->pdev->dev;
> int status;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
> return;
>
> @@ -5229,10 +5233,12 @@ err:
> }
>
> static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct be_adapter *adapter = netdev_priv(netdev);
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
> return;
>
> @@ -5342,8 +5348,8 @@ static const struct net_device_ops be_netdev_ops = {
> .ndo_busy_poll = be_busy_poll,
> #endif
> #ifdef CONFIG_BE2NET_VXLAN
> - .ndo_add_vxlan_port = be_add_vxlan_port,
> - .ndo_del_vxlan_port = be_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = be_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = be_del_vxlan_port,
> .ndo_features_check = be_features_check,
> #endif
> .ndo_get_phys_port_id = be_get_phys_port_id,
> diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
> b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
> index 639263d..447d5e6 100644
> --- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
> +++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
> @@ -21,6 +21,7 @@
> #include "fm10k.h"
> #include <linux/vmalloc.h>
> #if IS_ENABLED(CONFIG_FM10K_VXLAN)
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
> #endif /* CONFIG_FM10K_VXLAN */
>
> @@ -439,18 +440,24 @@ static void fm10k_restore_vxlan_port(struct fm10k_intfc *interface)
> * @netdev: network interface device structure
> * @sa_family: Address family of new port
> * @port: port number used for VXLAN
> + * @type: Tunnel type
> *
> - * This funciton is called when a new VXLAN interface has added a new
> port
> + * This function is called when a new VXLAN interface has added a new
> + port
> * number to the range that is currently in use for VXLAN. The new port
> * number is always added to the tail so that the port number list should
> * match the order in which the ports were allocated. The head of the list
> * is always used as the VXLAN port number for offloads.
> **/
> static void fm10k_add_vxlan_port(struct net_device *dev,
> - sa_family_t sa_family, __be16 port) {
> + sa_family_t sa_family, __be16 port,
> + u32 type) { #if
> +IS_ENABLED(CONFIG_FM10K_VXLAN)
> struct fm10k_intfc *interface = netdev_priv(dev);
> struct fm10k_vxlan_port *vxlan_port;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> /* only the PF supports configuring tunnels */
> if (interface->hw.mac.type != fm10k_mac_pf)
> return;
> @@ -476,6 +483,7 @@ insert_tail:
> list_add_tail(&vxlan_port->list, &interface->vxlan_port);
>
> fm10k_restore_vxlan_port(interface);
> +#endif
> }
>
> /**
> @@ -483,17 +491,23 @@ insert_tail:
> * @netdev: network interface device structure
> * @sa_family: Address family of freed port
> * @port: port number used for VXLAN
> + * @type: Tunnel type
> *
> - * This funciton is called when a new VXLAN interface has freed a
> port
> + * This function is called when a new VXLAN interface has freed a
> + port
> * number from the range that is currently in use for VXLAN. The freed
> * port is removed from the list and the new head is used to determine
> * the port number for offloads.
> **/
> static void fm10k_del_vxlan_port(struct net_device *dev,
> - sa_family_t sa_family, __be16 port) {
> + sa_family_t sa_family, __be16 port,
> + u32 type) { #if
> +IS_ENABLED(CONFIG_FM10K_VXLAN)
> struct fm10k_intfc *interface = netdev_priv(dev);
> struct fm10k_vxlan_port *vxlan_port;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (interface->hw.mac.type != fm10k_mac_pf)
> return;
>
> @@ -508,6 +522,7 @@ static void fm10k_del_vxlan_port(struct net_device *dev,
> }
>
> fm10k_restore_vxlan_port(interface);
> +#endif
> }
>
> /**
> @@ -1373,8 +1388,8 @@ static const struct net_device_ops fm10k_netdev_ops = {
> .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan,
> .ndo_set_vf_rate = fm10k_ndo_set_vf_bw,
> .ndo_get_vf_config = fm10k_ndo_get_vf_config,
> - .ndo_add_vxlan_port = fm10k_add_vxlan_port,
> - .ndo_del_vxlan_port = fm10k_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = fm10k_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = fm10k_del_vxlan_port,
> .ndo_do_ioctl = fm10k_ioctl,
> .ndo_dfwd_add_station = fm10k_dfwd_add_station,
> .ndo_dfwd_del_station = fm10k_dfwd_del_station,
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c
> b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index b825f97..520e34e 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -30,6 +30,7 @@
> #ifdef CONFIG_I40E_VXLAN
> #include <net/vxlan.h>
> #endif
> +#include <net/udp_tunnel.h>
>
> const char i40e_driver_name[] = "i40e"; static const char
> i40e_driver_string[] = @@ -8296,13 +8297,18 @@ static u8
> i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port) }
>
> /**
> - * i40e_add_vxlan_port - Get notifications about VXLAN ports that
> come up
> + * i40e_add_tunnel_port - Get notifications about UDP tunnel 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
> + * @sa_family: Socket Family that tunnel netdev is associated with
> + * @port: New UDP port number that tunnel started listening to
> + * @type: Tunnel Type
> + *
> + * This function modifies a common data structure for all udp_tunnels
> + * hence it is expected that it is called under a common lock.
> **/
> -static void i40e_add_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> +static void i40e_add_tunnel_port(struct net_device *netdev,
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct i40e_netdev_priv *np = netdev_priv(netdev);
> struct i40e_vsi *vsi = np->vsi; @@ -8310,6 +8316,9 @@ static
> void i40e_add_vxlan_port(struct net_device *netdev,
> u8 next_idx;
> u8 idx;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (sa_family == AF_INET6)
> return;
>
> @@ -8338,19 +8347,27 @@ static void i40e_add_vxlan_port(struct
> net_device *netdev, }
>
> /**
> - * i40e_del_vxlan_port - Get notifications about VXLAN ports that go
> away
> + * i40e_del_tunnel_port - Get notifications about UDP tunnel 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
> + * @sa_family: Socket Family that tunnel netdev is associated with
> + * @port: UDP port number that tunnel stopped listening to
> + * @type: Tunnel Type
> + *
> + * This function modifies a common data structure for all udp_tunnels
> + * hence it is expected that it is called under common lock.
> **/
> -static void i40e_del_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> +static void i40e_del_tunnel_port(struct net_device *netdev,
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct i40e_netdev_priv *np = netdev_priv(netdev);
> struct i40e_vsi *vsi = np->vsi;
> struct i40e_pf *pf = vsi->back;
> u8 idx;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (sa_family == AF_INET6)
> return;
>
> @@ -8596,8 +8613,8 @@ static const struct net_device_ops i40e_netdev_ops = {
> .ndo_set_vf_link_state = i40e_ndo_set_vf_link_state,
> .ndo_set_vf_spoofchk = i40e_ndo_set_vf_spoofchk,
> #ifdef CONFIG_I40E_VXLAN
> - .ndo_add_vxlan_port = i40e_add_vxlan_port,
> - .ndo_del_vxlan_port = i40e_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = i40e_add_tunnel_port,
> + .ndo_del_udp_tunnel_port = i40e_del_tunnel_port,
> #endif
> .ndo_get_phys_port_id = i40e_get_phys_port_id,
> .ndo_fdb_add = i40e_ndo_fdb_add,
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index 4089d77..76ccc77 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -50,6 +50,7 @@
> #include <linux/if_bridge.h>
> #include <linux/prefetch.h>
> #include <scsi/fc/fc_fcoe.h>
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
>
> #ifdef CONFIG_OF
> @@ -8088,14 +8089,18 @@ static int ixgbe_set_features(struct net_device *netdev,
> * @dev: The port's netdev
> * @sa_family: Socket Family that VXLAN is notifiying us about
> * @port: New UDP port number that VXLAN started listening to
> + * @type: Tunnel type
> **/
> static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct ixgbe_adapter *adapter = netdev_priv(dev);
> struct ixgbe_hw *hw = &adapter->hw;
> u16 new_port = ntohs(port);
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
> return;
>
> @@ -8121,13 +8126,17 @@ static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> * @dev: The port's netdev
> * @sa_family: Socket Family that VXLAN is notifying us about
> * @port: UDP port number that VXLAN stopped listening to
> + * @type: Tunnel type
> **/
> static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
> - __be16 port)
> + __be16 port, u32 type)
> {
> struct ixgbe_adapter *adapter = netdev_priv(dev);
> u16 new_port = ntohs(port);
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
> return;
>
> @@ -8436,8 +8445,8 @@ static const struct net_device_ops ixgbe_netdev_ops = {
> .ndo_dfwd_add_station = ixgbe_fwd_add,
> .ndo_dfwd_del_station = ixgbe_fwd_del,
> #ifdef CONFIG_IXGBE_VXLAN
> - .ndo_add_vxlan_port = ixgbe_add_vxlan_port,
> - .ndo_del_vxlan_port = ixgbe_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = ixgbe_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = ixgbe_del_vxlan_port,
> #endif /* CONFIG_IXGBE_VXLAN */
> .ndo_features_check = ixgbe_features_check,
> };
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> index 659209f..2cb19c7 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> @@ -39,6 +39,7 @@
> #include <linux/hash.h>
> #include <net/ip.h>
> #include <net/busy_poll.h>
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
>
> #include <linux/mlx4/driver.h>
> @@ -2365,11 +2366,15 @@ static void mlx4_en_del_vxlan_offloads(struct
> work_struct *work) }
>
> static void mlx4_en_add_vxlan_port(struct net_device *dev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct mlx4_en_priv *priv = netdev_priv(dev);
> __be16 current_port;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
> return;
>
> @@ -2388,11 +2393,15 @@ static void mlx4_en_add_vxlan_port(struct
> net_device *dev, }
>
> static void mlx4_en_del_vxlan_port(struct net_device *dev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct mlx4_en_priv *priv = netdev_priv(dev);
> __be16 current_port;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
> return;
>
> @@ -2469,8 +2478,8 @@ static const struct net_device_ops
> mlx4_netdev_ops = { #endif
> .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
> #ifdef CONFIG_MLX4_EN_VXLAN
> - .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
> - .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = mlx4_en_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = mlx4_en_del_vxlan_port,
> .ndo_features_check = mlx4_en_features_check,
> #endif
> .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
> @@ -2507,8 +2516,8 @@ static const struct net_device_ops
> mlx4_netdev_ops_master = { #endif
> .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
> #ifdef CONFIG_MLX4_EN_VXLAN
> - .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
> - .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = mlx4_en_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = mlx4_en_del_vxlan_port,
> .ndo_features_check = mlx4_en_features_check,
> #endif
> .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
> diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
> b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
> index 1205f6f..aa38dbb 100644
> --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
> +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
> @@ -17,6 +17,7 @@
> #include <linux/log2.h>
> #include <linux/pci.h>
> #ifdef CONFIG_QLCNIC_VXLAN
> +#include <net/udp_tunnel.h>
> #include <net/vxlan.h>
> #endif
>
> @@ -476,11 +477,15 @@ static int qlcnic_get_phys_port_id(struct
> net_device *netdev,
>
> #ifdef CONFIG_QLCNIC_VXLAN
> static void qlcnic_add_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct qlcnic_adapter *adapter = netdev_priv(netdev);
> struct qlcnic_hardware_context *ahw = adapter->ahw;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> /* Adapter supports only one VXLAN port. Use very first port
> * for enabling offload
> */
> @@ -498,11 +503,15 @@ static void qlcnic_add_vxlan_port(struct
> net_device *netdev, }
>
> static void qlcnic_del_vxlan_port(struct net_device *netdev,
> - sa_family_t sa_family, __be16 port)
> + sa_family_t sa_family, __be16 port,
> + u32 type)
> {
> struct qlcnic_adapter *adapter = netdev_priv(netdev);
> struct qlcnic_hardware_context *ahw = adapter->ahw;
>
> + if (type != UDP_TUNNEL_VXLAN)
> + return;
> +
> if (!qlcnic_encap_rx_offload(adapter) || !ahw->vxlan_port_count ||
> (ahw->vxlan_port != ntohs(port)))
> return;
> @@ -540,8 +549,8 @@ static const struct net_device_ops qlcnic_netdev_ops = {
> .ndo_fdb_dump = qlcnic_fdb_dump,
> .ndo_get_phys_port_id = qlcnic_get_phys_port_id,
> #ifdef CONFIG_QLCNIC_VXLAN
> - .ndo_add_vxlan_port = qlcnic_add_vxlan_port,
> - .ndo_del_vxlan_port = qlcnic_del_vxlan_port,
> + .ndo_add_udp_tunnel_port = qlcnic_add_vxlan_port,
> + .ndo_del_udp_tunnel_port = qlcnic_del_vxlan_port,
> .ndo_features_check = qlcnic_features_check,
> #endif
> #ifdef CONFIG_NET_POLL_CONTROLLER
> diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index
> 6369a57..5490629 100644
> --- a/drivers/net/vxlan.c
> +++ b/drivers/net/vxlan.c
> @@ -628,9 +628,10 @@ static void vxlan_notify_add_rx_port(struct
> vxlan_sock *vs)
>
> rcu_read_lock();
> for_each_netdev_rcu(net, dev) {
> - if (dev->netdev_ops->ndo_add_vxlan_port)
> - dev->netdev_ops->ndo_add_vxlan_port(dev, sa_family,
> - port);
> + if (dev->netdev_ops->ndo_add_udp_tunnel_port)
> + dev->netdev_ops->ndo_add_udp_tunnel_port(dev, sa_family,
> + port,
> +
> + UDP_TUNNEL_VXLAN);
> }
> rcu_read_unlock();
> }
> @@ -646,9 +647,10 @@ static void vxlan_notify_del_rx_port(struct
> vxlan_sock *vs)
>
> rcu_read_lock();
> for_each_netdev_rcu(net, dev) {
> - if (dev->netdev_ops->ndo_del_vxlan_port)
> - dev->netdev_ops->ndo_del_vxlan_port(dev, sa_family,
> - port);
> + if (dev->netdev_ops->ndo_del_udp_tunnel_port)
> + dev->netdev_ops->ndo_del_udp_tunnel_port(dev, sa_family,
> + port,
> +
> + UDP_TUNNEL_VXLAN);
> }
> rcu_read_unlock();
>
> @@ -2422,9 +2424,9 @@ static struct device_type vxlan_type = {
> .name = "vxlan",
> };
>
> -/* Calls the ndo_add_vxlan_port of the caller in order to
> +/* Calls the ndo_add_udp_tunnel_port of the caller in order to
> * supply the listening VXLAN udp ports. Callers are expected
> - * to implement the ndo_add_vxlan_port.
> + * to implement the ndo_add_tunnel_port.
> */
> void vxlan_get_rx_port(struct net_device *dev) { @@ -2440,8 +2442,9
> @@ void vxlan_get_rx_port(struct net_device *dev)
> hlist_for_each_entry_rcu(vs, &vn->sock_list[i], hlist) {
> port = inet_sk(vs->sock->sk)->inet_sport;
> sa_family = vxlan_get_sk_family(vs);
> - dev->netdev_ops->ndo_add_vxlan_port(dev, sa_family,
> - port);
> + dev->netdev_ops->ndo_add_udp_tunnel_port(dev, sa_family,
> + port,
> +
> + UDP_TUNNEL_VXLAN);
> }
> }
> spin_unlock(&vn->sock_lock);
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 7d2d1d7..eaecc42 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -1004,18 +1004,19 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
> * not implement this, it is assumed that the hw is not able to have
> * multiple net devices on single physical port.
> *
> - * void (*ndo_add_vxlan_port)(struct net_device *dev,
> - * sa_family_t sa_family, __be16 port);
> - * Called by vxlan to notiy a driver about the UDP port and socket
> - * address family that vxlan is listnening to. It is called only when
> - * a new port starts listening. The operation is protected by the
> - * vxlan_net->sock_lock.
> - *
> - * void (*ndo_del_vxlan_port)(struct net_device *dev,
> - * sa_family_t sa_family, __be16 port);
> - * Called by vxlan to notify the driver about a UDP port and socket
> - * address family that vxlan is not listening to anymore. The operation
> - * is protected by the vxlan_net->sock_lock.
> + * void (*ndo_add_udp_tunnel_port)(struct net_device *dev,
> + * sa_family_t sa_family, __be16 port, u32 type);
> + * Called by UDP based tunnel modules to notify a driver about a UDP
> + * port and socket address family that the tunnel is listening to. It is
> + * called only when a new port starts listening. The operation is
> + * protected by udp_offload_lock across all udp based tunnels.
> + *
> + * void (*ndo_del_udp_tunnel_port)(struct net_device *dev,
> + * sa_family_t sa_family, __be16 port, u32 type);
> + * Called by UDP based tunnel modules to notify the driver about a UDP port
> + * and socket address family that tunnel is not listening to anymore.
> + * The operation is protected by udp_offload_lock across all udp based
> + * tunnels.
> *
> * void* (*ndo_dfwd_add_station)(struct net_device *pdev,
> * struct net_device *dev)
> @@ -1209,13 +1210,12 @@ struct net_device_ops {
> struct netdev_phys_item_id *ppid);
> int (*ndo_get_phys_port_name)(struct net_device *dev,
> char *name, size_t len);
> - void (*ndo_add_vxlan_port)(struct net_device *dev,
> + void (*ndo_add_udp_tunnel_port)(struct net_device *dev,
> sa_family_t sa_family,
> - __be16 port);
> - void (*ndo_del_vxlan_port)(struct net_device *dev,
> + __be16 port, u32 type);
> + void (*ndo_del_udp_tunnel_port)(struct net_device *dev,
> sa_family_t sa_family,
> - __be16 port);
> -
> + __be16 port, u32
> + type);
> void* (*ndo_dfwd_add_station)(struct net_device *pdev,
> struct net_device *dev);
> void (*ndo_dfwd_del_station)(struct net_device *pdev,
> diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h index
> cb2f89f..72415aa 100644
> --- a/include/net/udp_tunnel.h
> +++ b/include/net/udp_tunnel.h
> @@ -9,6 +9,12 @@
> #include <net/addrconf.h>
> #endif
>
> +enum udp_tunnel_type {
> + UDP_TUNNEL_UNSPEC,
> + UDP_TUNNEL_VXLAN,
> + UDP_TUNNEL_GENEVE,
> +};
> +
> struct udp_port_cfg {
> u8 family;
>
> --
> 1.8.1.4
>
> --
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