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ixgbe: add VXLAN offload support for X550 devices

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Add support VXLAN receive checksum offload in X550 hardware.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore 2014-12-23 07:40:34 +00:00 committed by Jeff Kirsher
parent 4dedadcbae
commit 3f207800a9
4 changed files with 113 additions and 2 deletions
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11
drivers/net/ethernet/intel/Kconfig
View File

@ -192,6 +192,17 @@ config IXGBE
To compile this driver as a module, choose M here. The module
will be called ixgbe.
config IXGBE_VXLAN
bool "Virtual eXtensible Local Area Network Support"
default n
depends on IXGBE && VXLAN && !(IXGBE=y && VXLAN=m)
---help---
This allows one to create VXLAN virtual interfaces that provide
Layer 2 Networks over Layer 3 Networks. VXLAN is often used
to tunnel virtual network infrastructure in virtualized environments.
Say Y here if you want to use Virtual eXtensible Local Area Network
(VXLAN) in the driver.
config IXGBE_HWMON
bool "Intel(R) 10GbE PCI Express adapters HWMON support"
default y

1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -753,6 +753,7 @@ struct ixgbe_adapter {
u32 timer_event_accumulator;
u32 vferr_refcount;
struct ixgbe_mac_addr *mac_table;
u16 vxlan_port;
struct kobject *info_kobj;
#ifdef CONFIG_IXGBE_HWMON
struct hwmon_buff *ixgbe_hwmon_buff;

98
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -50,6 +50,7 @@
#include <linux/if_bridge.h>
#include <linux/prefetch.h>
#include <scsi/fc/fc_fcoe.h>
#include <net/vxlan.h>
#ifdef CONFIG_OF
#include <linux/of_net.h>
@ -1396,12 +1397,23 @@ static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
union ixgbe_adv_rx_desc *rx_desc,
struct sk_buff *skb)
{
__le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
__le16 hdr_info = rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
bool encap_pkt = false;
skb_checksum_none_assert(skb);
/* Rx csum disabled */
if (!(ring->netdev->features & NETIF_F_RXCSUM))
return;
if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) &&
(hdr_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_TUNNEL >> 16))) {
encap_pkt = true;
skb->encapsulation = 1;
skb->ip_summed = CHECKSUM_NONE;
}
/* if IP and error */
if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
@ -1413,8 +1425,6 @@ static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
return;
if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
__le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
/*
* 82599 errata, UDP frames with a 0 checksum can be marked as
* checksum errors.
@ -1429,6 +1439,17 @@ static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
/* It must be a TCP or UDP packet with a valid checksum */
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (encap_pkt) {
if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS))
return;
if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) {
ring->rx_stats.csum_err++;
return;
}
/* If we checked the outer header let the stack know */
skb->csum_level = 1;
}
}
static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
@ -5627,6 +5648,10 @@ static int ixgbe_open(struct net_device *netdev)
ixgbe_up_complete(adapter);
#if IS_ENABLED(CONFIG_IXGBE_VXLAN)
vxlan_get_rx_port(netdev);
#endif
return 0;
err_set_queues:
@ -7771,6 +7796,64 @@ static int ixgbe_set_features(struct net_device *netdev,
return 0;
}
/**
* ixgbe_add_vxlan_port - Get notifications about VXLAN ports that come up
* @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
**/
static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family,
__be16 port)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ixgbe_hw *hw = &adapter->hw;
u16 new_port = ntohs(port);
if (sa_family == AF_INET6)
return;
if (adapter->vxlan_port == new_port) {
netdev_info(dev, "Port %d already offloaded\n", new_port);
return;
}
if (adapter->vxlan_port) {
netdev_info(dev,
"Hit Max num of UDP ports, not adding port %d\n",
new_port);
return;
}
adapter->vxlan_port = new_port;
IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, new_port);
}
/**
* ixgbe_del_vxlan_port - Get notifications about VXLAN ports that go away
* @dev: The port's netdev
* @sa_family: Socket Family that VXLAN is notifying us about
* @port: UDP port number that VXLAN stopped listening to
**/
static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family,
__be16 port)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ixgbe_hw *hw = &adapter->hw;
u16 new_port = ntohs(port);
if (sa_family == AF_INET6)
return;
if (adapter->vxlan_port != new_port) {
netdev_info(dev, "Port %d was not found, not deleting\n",
new_port);
return;
}
adapter->vxlan_port = 0;
IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 0);
}
static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid,
@ -7982,6 +8065,8 @@ static const struct net_device_ops ixgbe_netdev_ops = {
.ndo_bridge_getlink = ixgbe_ndo_bridge_getlink,
.ndo_dfwd_add_station = ixgbe_fwd_add,
.ndo_dfwd_del_station = ixgbe_fwd_del,
.ndo_add_vxlan_port = ixgbe_add_vxlan_port,
.ndo_del_vxlan_port = ixgbe_del_vxlan_port,
};
/**
@ -8339,6 +8424,15 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->priv_flags |= IFF_SUPP_NOFCS;
switch (adapter->hw.mac.type) {
case ixgbe_mac_X550:
case ixgbe_mac_X550EM_x:
netdev->hw_enc_features |= NETIF_F_RXCSUM;
break;
default:
break;
}
#ifdef CONFIG_IXGBE_DCB
netdev->dcbnl_ops = &dcbnl_ops;
#endif

5
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
View File

@ -399,6 +399,7 @@ struct ixgbe_thermal_sensor_data {
#define IXGBE_WUPL 0x05900
#define IXGBE_WUPM 0x05A00 /* wake up pkt memory 0x5A00-0x5A7C */
#define IXGBE_VXLANCTRL 0x0000507C /* Rx filter VXLAN UDPPORT Register */
#define IXGBE_FHFT(_n) (0x09000 + ((_n) * 0x100)) /* Flex host filter table */
#define IXGBE_FHFT_EXT(_n) (0x09800 + ((_n) * 0x100)) /* Ext Flexible Host
* Filter Table */
@ -2122,6 +2123,7 @@ enum {
#define IXGBE_RXD_STAT_IPCS 0x40 /* IP xsum calculated */
#define IXGBE_RXD_STAT_PIF 0x80 /* passed in-exact filter */
#define IXGBE_RXD_STAT_CRCV 0x100 /* Speculative CRC Valid */
#define IXGBE_RXD_STAT_OUTERIPCS 0x100 /* Cloud IP xsum calculated */
#define IXGBE_RXD_STAT_VEXT 0x200 /* 1st VLAN found */
#define IXGBE_RXD_STAT_UDPV 0x400 /* Valid UDP checksum */
#define IXGBE_RXD_STAT_DYNINT 0x800 /* Pkt caused INT via DYNINT */
@ -2139,6 +2141,7 @@ enum {
#define IXGBE_RXD_ERR_IPE 0x80 /* IP Checksum Error */
#define IXGBE_RXDADV_ERR_MASK 0xfff00000 /* RDESC.ERRORS mask */
#define IXGBE_RXDADV_ERR_SHIFT 20 /* RDESC.ERRORS shift */
#define IXGBE_RXDADV_ERR_OUTERIPER 0x04000000 /* CRC IP Header error */
#define IXGBE_RXDADV_ERR_FCEOFE 0x80000000 /* FCoEFe/IPE */
#define IXGBE_RXDADV_ERR_FCERR 0x00700000 /* FCERR/FDIRERR */
#define IXGBE_RXDADV_ERR_FDIR_LEN 0x00100000 /* FDIR Length error */
@ -2227,6 +2230,8 @@ enum {
#define IXGBE_RXDADV_PKTTYPE_UDP 0x00000200 /* UDP hdr present */
#define IXGBE_RXDADV_PKTTYPE_SCTP 0x00000400 /* SCTP hdr present */
#define IXGBE_RXDADV_PKTTYPE_NFS 0x00000800 /* NFS hdr present */
#define IXGBE_RXDADV_PKTTYPE_VXLAN 0x00000800 /* VXLAN hdr present */
#define IXGBE_RXDADV_PKTTYPE_TUNNEL 0x00010000 /* Tunnel type */
#define IXGBE_RXDADV_PKTTYPE_IPSEC_ESP 0x00001000 /* IPSec ESP */
#define IXGBE_RXDADV_PKTTYPE_IPSEC_AH 0x00002000 /* IPSec AH */
#define IXGBE_RXDADV_PKTTYPE_LINKSEC 0x00004000 /* LinkSec Encap */