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i40e: geneve tunnel offload support 

This patch adds driver hooks to implement ndo_ops to add/del
udp port in the HW to identify GENEVE tunnels.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Singhai, Anjali 2015-12-14 12:21:18 -08:00 committed by David S. Miller
parent a8170d2b9e
commit 6a89902405
4 changed files with 150 additions and 43 deletions
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16
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -245,6 +245,11 @@ struct i40e_tc_configuration {
struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
};
struct i40e_udp_port_config {
__be16 index;
u8 type;
};
/* struct that defines the Ethernet device */
struct i40e_pf {
struct pci_dev *pdev;
@ -281,11 +286,9 @@ struct i40e_pf {
u32 fd_atr_cnt;
u32 fd_tcp_rule;
#ifdef CONFIG_I40E_VXLAN
__be16 vxlan_ports[I40E_MAX_PF_UDP_OFFLOAD_PORTS];
u16 pending_vxlan_bitmap;
struct i40e_udp_port_config udp_ports[I40E_MAX_PF_UDP_OFFLOAD_PORTS];
u16 pending_udp_bitmap;
#endif
enum i40e_interrupt_policy int_policy;
u16 rx_itr_default;
u16 tx_itr_default;
@ -322,9 +325,7 @@ struct i40e_pf {
#define I40E_FLAG_FD_ATR_ENABLED BIT_ULL(22)
#define I40E_FLAG_PTP BIT_ULL(25)
#define I40E_FLAG_MFP_ENABLED BIT_ULL(26)
#ifdef CONFIG_I40E_VXLAN
#define I40E_FLAG_VXLAN_FILTER_SYNC BIT_ULL(27)
#endif
#define I40E_FLAG_UDP_FILTER_SYNC BIT_ULL(27)
#define I40E_FLAG_PORT_ID_VALID BIT_ULL(28)
#define I40E_FLAG_DCB_CAPABLE BIT_ULL(29)
#define I40E_FLAG_RSS_AQ_CAPABLE BIT_ULL(31)
@ -336,6 +337,7 @@ struct i40e_pf {
#define I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE BIT_ULL(38)
#define I40E_FLAG_LINK_POLLING_ENABLED BIT_ULL(39)
#define I40E_FLAG_VEB_MODE_ENABLED BIT_ULL(40)
#define I40E_FLAG_GENEVE_OFFLOAD_CAPABLE BIT_ULL(41)
#define I40E_FLAG_NO_PCI_LINK_CHECK BIT_ULL(42)
/* tracks features that get auto disabled by errors */

167
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -27,9 +27,12 @@
/* Local includes */
#include "i40e.h"
#include "i40e_diag.h"
#ifdef CONFIG_I40E_VXLAN
#if IS_ENABLED(CONFIG_VXLAN)
#include <net/vxlan.h>
#endif
#if IS_ENABLED(CONFIG_GENEVE)
#include <net/geneve.h>
#endif
const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
@ -7036,30 +7039,30 @@ static void i40e_handle_mdd_event(struct i40e_pf *pf)
i40e_flush(hw);
}
#ifdef CONFIG_I40E_VXLAN
/**
* i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
* i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
* @pf: board private structure
**/
static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
{
#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
__be16 port;
int i;
if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
return;
pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
port = pf->vxlan_ports[i];
if (pf->pending_udp_bitmap & BIT_ULL(i)) {
pf->pending_udp_bitmap &= ~BIT_ULL(i);
port = pf->udp_ports[i].index;
if (port)
ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
I40E_AQC_TUNNEL_TYPE_VXLAN,
pf->udp_ports[i].type,
NULL, NULL);
else
ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
@ -7072,13 +7075,13 @@ static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
pf->vxlan_ports[i] = 0;
pf->udp_ports[i].index = 0;
}
}
}
#endif
}
#endif
/**
* i40e_service_task - Run the driver's async subtasks
* @work: pointer to work_struct containing our data
@ -7103,8 +7106,8 @@ static void i40e_service_task(struct work_struct *work)
i40e_watchdog_subtask(pf);
i40e_fdir_reinit_subtask(pf);
i40e_sync_filters_subtask(pf);
#ifdef CONFIG_I40E_VXLAN
i40e_sync_vxlan_filters_subtask(pf);
#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
i40e_sync_udp_filters_subtask(pf);
#endif
i40e_clean_adminq_subtask(pf);
@ -8380,7 +8383,8 @@ static int i40e_sw_init(struct i40e_pf *pf)
I40E_FLAG_HW_ATR_EVICT_CAPABLE |
I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
I40E_FLAG_WB_ON_ITR_CAPABLE |
I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
}
pf->eeprom_version = 0xDEAD;
pf->lan_veb = I40E_NO_VEB;
@ -8479,26 +8483,27 @@ static int i40e_set_features(struct net_device *netdev,
return 0;
}
#ifdef CONFIG_I40E_VXLAN
#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
/**
* i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
* i40e_get_udp_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)
static u8 i40e_get_udp_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)
if (pf->udp_ports[i].index == port)
return i;
}
return i;
}
#endif
/**
* i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
* @netdev: This physical port's netdev
@ -8508,6 +8513,7 @@ static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
static void i40e_add_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
#if IS_ENABLED(CONFIG_VXLAN)
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
@ -8517,7 +8523,7 @@ static void i40e_add_vxlan_port(struct net_device *netdev,
if (sa_family == AF_INET6)
return;
idx = i40e_get_vxlan_port_idx(pf, port);
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
@ -8527,7 +8533,7 @@ static void i40e_add_vxlan_port(struct net_device *netdev,
}
/* Now check if there is space to add the new port */
next_idx = i40e_get_vxlan_port_idx(pf, 0);
next_idx = i40e_get_udp_port_idx(pf, 0);
if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
@ -8536,9 +8542,11 @@ static void i40e_add_vxlan_port(struct net_device *netdev,
}
/* New port: add it and mark its index in the bitmap */
pf->vxlan_ports[next_idx] = port;
pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
pf->udp_ports[next_idx].index = port;
pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
pf->pending_udp_bitmap |= BIT_ULL(next_idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
#endif
}
/**
@ -8550,6 +8558,7 @@ static void i40e_add_vxlan_port(struct net_device *netdev,
static void i40e_del_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
#if IS_ENABLED(CONFIG_VXLAN)
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
@ -8558,23 +8567,108 @@ static void i40e_del_vxlan_port(struct net_device *netdev,
if (sa_family == AF_INET6)
return;
idx = i40e_get_vxlan_port_idx(pf, port);
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
/* if port exists, set it to 0 (mark for deletion)
* and make it pending
*/
pf->vxlan_ports[idx] = 0;
pf->pending_vxlan_bitmap |= BIT_ULL(idx);
pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
pf->udp_ports[idx].index = 0;
pf->pending_udp_bitmap |= BIT_ULL(idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
} else {
netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
ntohs(port));
}
#endif
}
/**
* i40e_add_geneve_port - Get notifications about GENEVE ports that come up
* @netdev: This physical port's netdev
* @sa_family: Socket Family that GENEVE is notifying us about
* @port: New UDP port number that GENEVE started listening to
**/
static void i40e_add_geneve_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
#if IS_ENABLED(CONFIG_GENEVE)
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 next_idx;
u8 idx;
if (sa_family == AF_INET6)
return;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "udp port %d already offloaded\n",
ntohs(port));
return;
}
/* Now check if there is space to add the new port */
next_idx = i40e_get_udp_port_idx(pf, 0);
if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
ntohs(port));
return;
}
/* New port: add it and mark its index in the bitmap */
pf->udp_ports[next_idx].index = port;
pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
pf->pending_udp_bitmap |= BIT_ULL(next_idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
#endif
}
/**
* i40e_del_geneve_port - Get notifications about GENEVE ports that go away
* @netdev: This physical port's netdev
* @sa_family: Socket Family that GENEVE is notifying us about
* @port: UDP port number that GENEVE stopped listening to
**/
static void i40e_del_geneve_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
#if IS_ENABLED(CONFIG_GENEVE)
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 idx;
if (sa_family == AF_INET6)
return;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
/* if port exists, set it to 0 (mark for deletion)
* and make it pending
*/
pf->udp_ports[idx].index = 0;
pf->pending_udp_bitmap |= BIT_ULL(idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
ntohs(port));
} else {
netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
ntohs(port));
}
#endif
}
static int i40e_get_phys_port_id(struct net_device *netdev,
struct netdev_phys_item_id *ppid)
{
@ -8752,7 +8846,10 @@ static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
nlflags, 0, 0, filter_mask, NULL);
}
#define I40E_MAX_TUNNEL_HDR_LEN 80
/* Hardware supports L4 tunnel length of 128B (=2^7) which includes
* inner mac plus all inner ethertypes.
*/
#define I40E_MAX_TUNNEL_HDR_LEN 128
/**
* i40e_features_check - Validate encapsulated packet conforms to limits
* @skb: skb buff
@ -8764,7 +8861,7 @@ static netdev_features_t i40e_features_check(struct sk_buff *skb,
netdev_features_t features)
{
if (skb->encapsulation &&
(skb_inner_mac_header(skb) - skb_transport_header(skb) >
((skb_inner_network_header(skb) - skb_transport_header(skb)) >
I40E_MAX_TUNNEL_HDR_LEN))
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
@ -8799,9 +8896,13 @@ static const struct net_device_ops i40e_netdev_ops = {
.ndo_get_vf_config = i40e_ndo_get_vf_config,
.ndo_set_vf_link_state = i40e_ndo_set_vf_link_state,
.ndo_set_vf_spoofchk = i40e_ndo_set_vf_spoofchk,
#ifdef CONFIG_I40E_VXLAN
#if IS_ENABLED(CONFIG_VXLAN)
.ndo_add_vxlan_port = i40e_add_vxlan_port,
.ndo_del_vxlan_port = i40e_del_vxlan_port,
#endif
#if IS_ENABLED(CONFIG_GENEVE)
.ndo_add_geneve_port = i40e_add_geneve_port,
.ndo_del_geneve_port = i40e_del_geneve_port,
#endif
.ndo_get_phys_port_id = i40e_get_phys_port_id,
.ndo_fdb_add = i40e_ndo_fdb_add,
@ -8836,6 +8937,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
np->vsi = vsi;
netdev->hw_enc_features |= NETIF_F_IP_CSUM |
NETIF_F_RXCSUM |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_GRE |
NETIF_F_TSO;
@ -10348,6 +10450,9 @@ static void i40e_print_features(struct i40e_pf *pf)
i += snprintf(&buf[i], REMAIN(i), " DCB");
#if IS_ENABLED(CONFIG_VXLAN)
i += snprintf(&buf[i], REMAIN(i), " VxLAN");
#endif
#if IS_ENABLED(CONFIG_GENEVE)
i += snprintf(&buf[i], REMAIN(i), " Geneve");
#endif
if (pf->flags & I40E_FLAG_PTP)
i += snprintf(&buf[i], REMAIN(i), " PTP");

8
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -1380,7 +1380,7 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
if (rx_error & BIT(I40E_RX_DESC_ERROR_PPRS_SHIFT))
return;
/* If VXLAN traffic has an outer UDPv4 checksum we need to check
/* If VXLAN/GENEVE traffic has an outer UDPv4 checksum we need to check
* it in the driver, hardware does not do it for us.
* Since L3L4P bit was set we assume a valid IHL value (>=5)
* so the total length of IPv4 header is IHL*4 bytes
@ -2001,7 +2001,7 @@ static void i40e_atr(struct i40e_ring *tx_ring, struct sk_buff *skb,
if (!(tx_flags & (I40E_TX_FLAGS_IPV4 | I40E_TX_FLAGS_IPV6)))
return;
if (!(tx_flags & I40E_TX_FLAGS_VXLAN_TUNNEL)) {
if (!(tx_flags & I40E_TX_FLAGS_UDP_TUNNEL)) {
/* snag network header to get L4 type and address */
hdr.network = skb_network_header(skb);
@ -2086,7 +2086,7 @@ static void i40e_atr(struct i40e_ring *tx_ring, struct sk_buff *skb,
I40E_TXD_FLTR_QW1_FD_STATUS_SHIFT;
dtype_cmd |= I40E_TXD_FLTR_QW1_CNT_ENA_MASK;
if (!(tx_flags & I40E_TX_FLAGS_VXLAN_TUNNEL))
if (!(tx_flags & I40E_TX_FLAGS_UDP_TUNNEL))
dtype_cmd |=
((u32)I40E_FD_ATR_STAT_IDX(pf->hw.pf_id) <<
I40E_TXD_FLTR_QW1_CNTINDEX_SHIFT) &
@ -2319,7 +2319,7 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags,
oudph = udp_hdr(skb);
oiph = ip_hdr(skb);
l4_tunnel = I40E_TXD_CTX_UDP_TUNNELING;
*tx_flags |= I40E_TX_FLAGS_VXLAN_TUNNEL;
*tx_flags |= I40E_TX_FLAGS_UDP_TUNNEL;
break;
case IPPROTO_GRE:
l4_tunnel = I40E_TXD_CTX_GRE_TUNNELING;

2
drivers/net/ethernet/intel/i40e/i40e_txrx.h
View File

@ -163,7 +163,7 @@ enum i40e_dyn_idx_t {
#define I40E_TX_FLAGS_FSO BIT(7)
#define I40E_TX_FLAGS_TSYN BIT(8)
#define I40E_TX_FLAGS_FD_SB BIT(9)
#define I40E_TX_FLAGS_VXLAN_TUNNEL BIT(10)
#define I40E_TX_FLAGS_UDP_TUNNEL BIT(10)
#define I40E_TX_FLAGS_VLAN_MASK 0xffff0000
#define I40E_TX_FLAGS_VLAN_PRIO_MASK 0xe0000000
#define I40E_TX_FLAGS_VLAN_PRIO_SHIFT 29