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liquidio: Vxlan support

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This patch adds support for Vxaln offloads in liquidio driver.

Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Raghu Vatsavayi 2016-07-03 13:56:47 -07:00 committed by David S. Miller
parent 13c5c240f7
commit 01fb237ac0
6 changed files with 254 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
View File

@ -106,6 +106,7 @@ static const char oct_stats_strings[][ETH_GSTRING_LEN] = {
"tx_tso",
"tx_tso_packets",
"tx_tso_err",
"tx_vxlan",
"mac_tx_total_pkts",
"mac_tx_total_bytes",
@ -129,6 +130,9 @@ static const char oct_stats_strings[][ETH_GSTRING_LEN] = {
"rx_err_link",
"rx_err_drop",
"rx_vxlan",
"rx_vxlan_err",
"rx_lro_pkts",
"rx_lro_bytes",
"rx_total_lro",
@ -167,6 +171,7 @@ static const char oct_iq_stats_strings[][ETH_GSTRING_LEN] = {
"fw_bytes_sent",
"tso",
"vxlan",
"txq_restart",
};
@ -186,6 +191,7 @@ static const char oct_droq_stats_strings[][ETH_GSTRING_LEN] = {
"fw_bytes_received",
"fw_dropped_nodispatch",
"vxlan",
"buffer_alloc_failure",
};
@ -675,6 +681,10 @@ lio_get_ethtool_stats(struct net_device *netdev,
*fw_err_tso
*/
data[i++] = CVM_CAST64(oct_dev->link_stats.fromhost.fw_err_tso);
/*per_core_stats[cvmx_get_core_num()].link_stats[idx].fromhost.
*fw_tx_vxlan
*/
data[i++] = CVM_CAST64(oct_dev->link_stats.fromhost.fw_tx_vxlan);
/* mac tx statistics */
/*CVMX_BGXX_CMRX_TX_STAT5 */
@ -729,6 +739,15 @@ lio_get_ethtool_stats(struct net_device *netdev,
*/
data[i++] = CVM_CAST64(oct_dev->link_stats.fromwire.fw_err_drop);
/*per_core_stats[cvmx_get_core_num()].link_stats[lro_ctx->ifidx].
*fromwire.fw_rx_vxlan
*/
data[i++] = CVM_CAST64(oct_dev->link_stats.fromwire.fw_rx_vxlan);
/*per_core_stats[cvmx_get_core_num()].link_stats[lro_ctx->ifidx].
*fromwire.fw_rx_vxlan_err
*/
data[i++] = CVM_CAST64(oct_dev->link_stats.fromwire.fw_rx_vxlan_err);
/* LRO */
/*per_core_stats[cvmx_get_core_num()].link_stats[ifidx].fromwire.
*fw_lro_pkts
@ -822,6 +841,8 @@ lio_get_ethtool_stats(struct net_device *netdev,
/*tso request*/
data[i++] = CVM_CAST64(oct_dev->instr_queue[j]->stats.tx_gso);
/*vxlan request*/
data[i++] = CVM_CAST64(oct_dev->instr_queue[j]->stats.tx_vxlan);
/*txq restart*/
data[i++] =
CVM_CAST64(oct_dev->instr_queue[j]->stats.tx_restart);
@ -858,6 +879,9 @@ lio_get_ethtool_stats(struct net_device *netdev,
CVM_CAST64(oct_dev->droq[j]->stats.bytes_received);
data[i++] =
CVM_CAST64(oct_dev->droq[j]->stats.dropped_nodispatch);
data[i++] =
CVM_CAST64(oct_dev->droq[j]->stats.rx_vxlan);
data[i++] =
CVM_CAST64(oct_dev->droq[j]->stats.rx_alloc_failure);
}
@ -1083,6 +1107,9 @@ octnet_nic_stats_callback(struct octeon_device *oct_dev,
rstats->fw_err_pko = rsp_rstats->fw_err_pko;
rstats->fw_err_link = rsp_rstats->fw_err_link;
rstats->fw_err_drop = rsp_rstats->fw_err_drop;
rstats->fw_rx_vxlan = rsp_rstats->fw_rx_vxlan;
rstats->fw_rx_vxlan_err = rsp_rstats->fw_rx_vxlan_err;
/* Number of packets that are LROed */
rstats->fw_lro_pkts = rsp_rstats->fw_lro_pkts;
/* Number of octets that are LROed */
@ -1127,6 +1154,8 @@ octnet_nic_stats_callback(struct octeon_device *oct_dev,
tstats->fw_tso = rsp_tstats->fw_tso;
tstats->fw_tso_fwd = rsp_tstats->fw_tso_fwd;
tstats->fw_err_tso = rsp_tstats->fw_err_tso;
tstats->fw_tx_vxlan = rsp_tstats->fw_tx_vxlan;
resp->status = 1;
} else {
resp->status = -1;

208
drivers/net/ethernet/cavium/liquidio/lio_main.c
View File

@ -37,6 +37,7 @@
#include <linux/list.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <net/vxlan.h>
#include "octeon_config.h"
#include "liquidio_common.h"
#include "octeon_droq.h"
@ -2000,14 +2001,25 @@ liquidio_push_packet(u32 octeon_id,
}
skb->protocol = eth_type_trans(skb, skb->dev);
if ((netdev->features & NETIF_F_RXCSUM) &&
(rh->r_dh.csum_verified == CNNIC_CSUM_VERIFIED))
(((rh->r_dh.encap_on) &&
(rh->r_dh.csum_verified & CNNIC_TUN_CSUM_VERIFIED)) ||
(!(rh->r_dh.encap_on) &&
(rh->r_dh.csum_verified & CNNIC_CSUM_VERIFIED))))
/* checksum has already been verified */
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
/* Setting Encapsulation field on basis of status received
* from the firmware
*/
if (rh->r_dh.encap_on) {
skb->encapsulation = 1;
skb->csum_level = 1;
droq->stats.rx_vxlan++;
}
/* inbound VLAN tag */
if ((netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
(rh->r_dh.vlan != 0)) {
@ -2410,6 +2422,55 @@ void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr)
netdev->name);
break;
/* Case to handle "OCTNET_CMD_TNL_RX_CSUM_CTL"
* Command passed by NIC driver
*/
case OCTNET_CMD_TNL_RX_CSUM_CTL:
if (nctrl->ncmd.s.param1 == OCTNET_CMD_RXCSUM_ENABLE) {
netif_info(lio, probe, lio->netdev,
"%s RX Checksum Offload Enabled\n",
netdev->name);
} else if (nctrl->ncmd.s.param1 ==
OCTNET_CMD_RXCSUM_DISABLE) {
netif_info(lio, probe, lio->netdev,
"%s RX Checksum Offload Disabled\n",
netdev->name);
}
break;
/* Case to handle "OCTNET_CMD_TNL_TX_CSUM_CTL"
* Command passed by NIC driver
*/
case OCTNET_CMD_TNL_TX_CSUM_CTL:
if (nctrl->ncmd.s.param1 == OCTNET_CMD_TXCSUM_ENABLE) {
netif_info(lio, probe, lio->netdev,
"%s TX Checksum Offload Enabled\n",
netdev->name);
} else if (nctrl->ncmd.s.param1 ==
OCTNET_CMD_TXCSUM_DISABLE) {
netif_info(lio, probe, lio->netdev,
"%s TX Checksum Offload Disabled\n",
netdev->name);
}
break;
/* Case to handle "OCTNET_CMD_VXLAN_PORT_CONFIG"
* Command passed by NIC driver
*/
case OCTNET_CMD_VXLAN_PORT_CONFIG:
if (nctrl->ncmd.s.more == OCTNET_CMD_VXLAN_PORT_ADD) {
netif_info(lio, probe, lio->netdev,
"%s VxLAN Destination UDP PORT:%d ADDED\n",
netdev->name,
nctrl->ncmd.s.param1);
} else if (nctrl->ncmd.s.more ==
OCTNET_CMD_VXLAN_PORT_DEL) {
netif_info(lio, probe, lio->netdev,
"%s VxLAN Destination UDP PORT:%d DELETED\n",
netdev->name,
nctrl->ncmd.s.param1);
}
break;
case OCTNET_CMD_SET_FLOW_CTL:
netif_info(lio, probe, lio->netdev, "Set RX/TX flow control parameters\n");
@ -2899,9 +2960,14 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
cmdsetup.u64 = 0;
cmdsetup.s.iq_no = iq_no;
if (skb->ip_summed == CHECKSUM_PARTIAL)
cmdsetup.s.transport_csum = 1;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
if (skb->encapsulation) {
cmdsetup.s.tnl_csum = 1;
stats->tx_vxlan++;
} else {
cmdsetup.s.transport_csum = 1;
}
}
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
cmdsetup.s.timestamp = 1;
@ -3124,6 +3190,72 @@ static int liquidio_vlan_rx_kill_vid(struct net_device *netdev,
return ret;
}
/** Sending command to enable/disable RX checksum offload
* @param netdev pointer to network device
* @param command OCTNET_CMD_TNL_RX_CSUM_CTL
* @param rx_cmd_bit OCTNET_CMD_RXCSUM_ENABLE/
* OCTNET_CMD_RXCSUM_DISABLE
* @returns SUCCESS or FAILURE
*/
int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
u8 rx_cmd)
{
struct lio *lio = GET_LIO(netdev);
struct octeon_device *oct = lio->oct_dev;
struct octnic_ctrl_pkt nctrl;
int ret = 0;
nctrl.ncmd.u64 = 0;
nctrl.ncmd.s.cmd = command;
nctrl.ncmd.s.param1 = rx_cmd;
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
nctrl.wait_time = 100;
nctrl.netpndev = (u64)netdev;
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
if (ret < 0) {
dev_err(&oct->pci_dev->dev,
"DEVFLAGS RXCSUM change failed in core(ret:0x%x)\n",
ret);
}
return ret;
}
/** Sending command to add/delete VxLAN UDP port to firmware
* @param netdev pointer to network device
* @param command OCTNET_CMD_VXLAN_PORT_CONFIG
* @param vxlan_port VxLAN port to be added or deleted
* @param vxlan_cmd_bit OCTNET_CMD_VXLAN_PORT_ADD,
* OCTNET_CMD_VXLAN_PORT_DEL
* @returns SUCCESS or FAILURE
*/
static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
u16 vxlan_port, u8 vxlan_cmd_bit)
{
struct lio *lio = GET_LIO(netdev);
struct octeon_device *oct = lio->oct_dev;
struct octnic_ctrl_pkt nctrl;
int ret = 0;
nctrl.ncmd.u64 = 0;
nctrl.ncmd.s.cmd = command;
nctrl.ncmd.s.more = vxlan_cmd_bit;
nctrl.ncmd.s.param1 = vxlan_port;
nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
nctrl.wait_time = 100;
nctrl.netpndev = (u64)netdev;
nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
if (ret < 0) {
dev_err(&oct->pci_dev->dev,
"VxLAN port add/delete failed in core (ret:0x%x)\n",
ret);
}
return ret;
}
int liquidio_set_feature(struct net_device *netdev, int cmd, u16 param1)
{
struct lio *lio = GET_LIO(netdev);
@ -3204,9 +3336,48 @@ static int liquidio_set_features(struct net_device *netdev,
liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
/* Sending command to firmware to enable/disable RX checksum
* offload settings using ethtool
*/
if (!(netdev->features & NETIF_F_RXCSUM) &&
(lio->enc_dev_capability & NETIF_F_RXCSUM) &&
(features & NETIF_F_RXCSUM))
liquidio_set_rxcsum_command(netdev,
OCTNET_CMD_TNL_RX_CSUM_CTL,
OCTNET_CMD_RXCSUM_ENABLE);
else if ((netdev->features & NETIF_F_RXCSUM) &&
(lio->enc_dev_capability & NETIF_F_RXCSUM) &&
!(features & NETIF_F_RXCSUM))
liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
OCTNET_CMD_RXCSUM_DISABLE);
return 0;
}
static void liquidio_add_vxlan_port(struct net_device *netdev,
struct udp_tunnel_info *ti)
{
if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
return;
liquidio_vxlan_port_command(netdev,
OCTNET_CMD_VXLAN_PORT_CONFIG,
htons(ti->port),
OCTNET_CMD_VXLAN_PORT_ADD);
}
static void liquidio_del_vxlan_port(struct net_device *netdev,
struct udp_tunnel_info *ti)
{
if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
return;
liquidio_vxlan_port_command(netdev,
OCTNET_CMD_VXLAN_PORT_CONFIG,
htons(ti->port),
OCTNET_CMD_VXLAN_PORT_DEL);
}
static struct net_device_ops lionetdevops = {
.ndo_open = liquidio_open,
.ndo_stop = liquidio_stop,
@ -3222,6 +3393,8 @@ static struct net_device_ops lionetdevops = {
.ndo_do_ioctl = liquidio_ioctl,
.ndo_fix_features = liquidio_fix_features,
.ndo_set_features = liquidio_set_features,
.ndo_udp_tunnel_add = liquidio_add_vxlan_port,
.ndo_udp_tunnel_del = liquidio_del_vxlan_port,
};
/** \brief Entry point for the liquidio module
@ -3479,6 +3652,22 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
| NETIF_F_LRO;
netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
/* Copy of transmit encapsulation capabilities:
* TSO, TSO6, Checksums for this device
*/
lio->enc_dev_capability = NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
| NETIF_F_GSO_UDP_TUNNEL
| NETIF_F_HW_CSUM | NETIF_F_SG
| NETIF_F_RXCSUM
| NETIF_F_TSO | NETIF_F_TSO6
| NETIF_F_LRO;
netdev->hw_enc_features = (lio->enc_dev_capability &
~NETIF_F_LRO);
lio->dev_capability |= NETIF_F_GSO_UDP_TUNNEL;
netdev->vlan_features = lio->dev_capability;
/* Add any unchangeable hw features */
lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
@ -3561,6 +3750,15 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
ifstate_set(lio, LIO_IFSTATE_REGISTERED);
/* Sending command to firmware to enable Rx checksum offload
* by default at the time of setup of Liquidio driver for
* this device
*/
liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
OCTNET_CMD_RXCSUM_ENABLE);
liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
OCTNET_CMD_TXCSUM_ENABLE);
dev_dbg(&octeon_dev->pci_dev->dev,
"NIC ifidx:%d Setup successful\n", i);

12
drivers/net/ethernet/cavium/liquidio/liquidio_common.h
View File

@ -216,6 +216,13 @@ static inline void add_sg_size(struct octeon_sg_entry *sg_entry,
#define OCTNET_CMD_ENABLE_VLAN_FILTER 0x16
#define OCTNET_CMD_ADD_VLAN_FILTER 0x17
#define OCTNET_CMD_DEL_VLAN_FILTER 0x18
#define OCTNET_CMD_VXLAN_PORT_CONFIG 0x19
#define OCTNET_CMD_VXLAN_PORT_ADD 0x0
#define OCTNET_CMD_VXLAN_PORT_DEL 0x1
#define OCTNET_CMD_RXCSUM_ENABLE 0x0
#define OCTNET_CMD_RXCSUM_DISABLE 0x1
#define OCTNET_CMD_TXCSUM_ENABLE 0x0
#define OCTNET_CMD_TXCSUM_DISABLE 0x1
/* RX(packets coming from wire) Checksum verification flags */
/* TCP/UDP csum */
@ -533,6 +540,7 @@ union octeon_rh {
u64 priority:3;
u64 csum_verified:3; /** checksum verified. */
u64 has_hwtstamp:1; /** Has hardware timestamp. 1 = yes. */
u64 encap_on:1;
} r_dh;
struct {
u64 opcode:4;
@ -562,6 +570,7 @@ union octeon_rh {
u64 opcode:4;
} r;
struct {
u64 encap_on:1;
u64 has_hwtstamp:1; /** 1 = has hwtstamp */
u64 csum_verified:3; /** checksum verified. */
u64 priority:3;
@ -736,6 +745,8 @@ struct nic_rx_stats {
u64 fw_err_pko;
u64 fw_err_link;
u64 fw_err_drop;
u64 fw_rx_vxlan;
u64 fw_rx_vxlan_err;
/* LRO */
u64 fw_lro_pkts; /* Number of packets that are LROed */
@ -776,6 +787,7 @@ struct nic_tx_stats {
u64 fw_err_tso;
u64 fw_tso; /* number of tso requests */
u64 fw_tso_fwd; /* number of packets segmented in tso */
u64 fw_tx_vxlan;
};
struct oct_link_stats {

3
drivers/net/ethernet/cavium/liquidio/octeon_droq.h
View File

@ -121,6 +121,9 @@ struct oct_droq_stats {
/** Num of Packets dropped due to receive path failures. */
u64 rx_dropped;
/** Num of vxlan packets received; */
u64 rx_vxlan;
/** Num of failures of recv_buffer_alloc() */
u64 rx_alloc_failure;

1
drivers/net/ethernet/cavium/liquidio/octeon_iq.h
View File

@ -66,6 +66,7 @@ struct oct_iq_stats {
u64 tx_dropped;/**< Numof pkts dropped dueto xmitpath errors. */
u64 tx_tot_bytes;/**< Total count of bytes sento to network. */
u64 tx_gso; /* count of tso */
u64 tx_vxlan; /* tunnel */
u64 tx_dmamap_fail;
u64 tx_restart;
/*u64 tx_timeout_count;*/

6
drivers/net/ethernet/cavium/liquidio/octeon_network.h
View File

@ -96,6 +96,12 @@ struct lio {
/** Copy of Interface capabilities: TSO, TSO6, LRO, Chescksums . */
u64 dev_capability;
/* Copy of transmit encapsulation capabilities:
* TSO, TSO6, Checksums for this device for Kernel
* 3.10.0 onwards
*/
u64 enc_dev_capability;
/** Copy of beacaon reg in phy */
u32 phy_beacon_val;