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linux-stable/drivers/net/vmxnet3/vmxnet3_ethtool.c
William Tu 54f00cce11 vmxnet3: Add XDP support. 
The patch adds native-mode XDP support: XDP DROP, PASS, TX, and REDIRECT.

Background:
The vmxnet3 rx consists of three rings: ring0, ring1, and dataring.
For r0 and r1, buffers at r0 are allocated using alloc_skb APIs and dma
mapped to the ring's descriptor. If LRO is enabled and packet size larger
than 3K, VMXNET3_MAX_SKB_BUF_SIZE, then r1 is used to mapped the rest of
the buffer larger than VMXNET3_MAX_SKB_BUF_SIZE. Each buffer in r1 is
allocated using alloc_page. So for LRO packets, the payload will be in one
buffer from r0 and multiple from r1, for non-LRO packets, only one
descriptor in r0 is used for packet size less than 3k.

When receiving a packet, the first descriptor will have the sop (start of
packet) bit set, and the last descriptor will have the eop (end of packet)
bit set. Non-LRO packets will have only one descriptor with both sop and
eop set.

Other than r0 and r1, vmxnet3 dataring is specifically designed for
handling packets with small size, usually 128 bytes, defined in
VMXNET3_DEF_RXDATA_DESC_SIZE, by simply copying the packet from the backend
driver in ESXi to the ring's memory region at front-end vmxnet3 driver, in
order to avoid memory mapping/unmapping overhead. In summary, packet size:
    A. < 128B: use dataring
    B. 128B - 3K: use ring0 (VMXNET3_RX_BUF_SKB)
    C. > 3K: use ring0 and ring1 (VMXNET3_RX_BUF_SKB + VMXNET3_RX_BUF_PAGE)
As a result, the patch adds XDP support for packets using dataring
and r0 (case A and B), not the large packet size when LRO is enabled.

XDP Implementation:
When user loads and XDP prog, vmxnet3 driver checks configurations, such
as mtu, lro, and re-allocate the rx buffer size for reserving the extra
headroom, XDP_PACKET_HEADROOM, for XDP frame. The XDP prog will then be
associated with every rx queue of the device. Note that when using dataring
for small packet size, vmxnet3 (front-end driver) doesn't control the
buffer allocation, as a result we allocate a new page and copy packet
from the dataring to XDP frame.

The receive side of XDP is implemented for case A and B, by invoking the
bpf program at vmxnet3_rq_rx_complete and handle its returned action.
The vmxnet3_process_xdp(), vmxnet3_process_xdp_small() function handles
the ring0 and dataring case separately, and decides the next journey of
the packet afterward.

For TX, vmxnet3 has split header design. Outgoing packets are parsed
first and protocol headers (L2/L3/L4) are copied to the backend. The
rest of the payload are dma mapped. Since XDP_TX does not parse the
packet protocol, the entire XDP frame is dma mapped for transmission
and transmitted in a batch. Later on, the frame is freed and recycled
back to the memory pool.

Performance:
Tested using two VMs inside one ESXi vSphere 7.0 machine, using single
core on each vmxnet3 device, sender using DPDK testpmd tx-mode attached
to vmxnet3 device, sending 64B or 512B UDP packet.

VM1 txgen:
$ dpdk-testpmd -l 0-3 -n 1 -- -i --nb-cores=3 \
--forward-mode=txonly --eth-peer=0,<mac addr of vm2>
option: add "--txonly-multi-flow"
option: use --txpkts=512 or 64 byte

VM2 running XDP:
$ ./samples/bpf/xdp_rxq_info -d ens160 -a <options> --skb-mode
$ ./samples/bpf/xdp_rxq_info -d ens160 -a <options>
options: XDP_DROP, XDP_PASS, XDP_TX

To test REDIRECT to cpu 0, use
$ ./samples/bpf/xdp_redirect_cpu -d ens160 -c 0 -e drop

Single core performance comparison with skb-mode.
64B:      skb-mode -> native-mode
XDP_DROP: 1.6Mpps -> 2.4Mpps
XDP_PASS: 338Kpps -> 367Kpps
XDP_TX:   1.1Mpps -> 2.3Mpps
REDIRECT-drop: 1.3Mpps -> 2.3Mpps

512B:     skb-mode -> native-mode
XDP_DROP: 863Kpps -> 1.3Mpps
XDP_PASS: 275Kpps -> 376Kpps
XDP_TX:   554Kpps -> 1.2Mpps
REDIRECT-drop: 659Kpps -> 1.2Mpps

Demo: https://youtu.be/4lm1CSCi78Q

Future work:
- XDP frag support
- use napi_consume_skb() instead of dev_kfree_skb_any at unmap
- stats using u64_stats_t
- using bitfield macro BIT()
- optimization for DMA synchronization using actual frame length,
  instead of always max_len

Signed-off-by: William Tu <u9012063@gmail.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-08-14 08:03:52 +01:00

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/*
* Linux driver for VMware's vmxnet3 ethernet NIC.
*
* Copyright (C) 2008-2022, VMware, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Maintained by: pv-drivers@vmware.com
*
*/
#include "vmxnet3_int.h"
#include <net/vxlan.h>
#include <net/geneve.h>
#include "vmxnet3_xdp.h"
#define VXLAN_UDP_PORT 8472
struct vmxnet3_stat_desc {
char desc[ETH_GSTRING_LEN];
int offset;
};
/* per tq stats maintained by the device */
static const struct vmxnet3_stat_desc
vmxnet3_tq_dev_stats[] = {
/* description, offset */
{ "Tx Queue#", 0 },
{ " TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
{ " TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
{ " ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
{ " ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
{ " mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
{ " mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
{ " bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
{ " bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
{ " pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
{ " pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
};
/* per tq stats maintained by the driver */
static const struct vmxnet3_stat_desc
vmxnet3_tq_driver_stats[] = {
/* description, offset */
{" drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
drop_total) },
{ " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
drop_too_many_frags) },
{ " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
drop_oversized_hdr) },
{ " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
drop_hdr_inspect_err) },
{ " tso", offsetof(struct vmxnet3_tq_driver_stats,
drop_tso) },
{ " ring full", offsetof(struct vmxnet3_tq_driver_stats,
tx_ring_full) },
{ " pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
linearized) },
{ " hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
copy_skb_header) },
{ " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
oversized_hdr) },
{ " xdp xmit", offsetof(struct vmxnet3_tq_driver_stats,
xdp_xmit) },
{ " xdp xmit err", offsetof(struct vmxnet3_tq_driver_stats,
xdp_xmit_err) },
};
/* per rq stats maintained by the device */
static const struct vmxnet3_stat_desc
vmxnet3_rq_dev_stats[] = {
{ "Rx Queue#", 0 },
{ " LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
{ " LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
{ " ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
{ " ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
{ " mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
{ " mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
{ " bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
{ " bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
{ " pkts rx OOB", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
{ " pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
};
/* per rq stats maintained by the driver */
static const struct vmxnet3_stat_desc
vmxnet3_rq_driver_stats[] = {
/* description, offset */
{ " drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
drop_total) },
{ " err", offsetof(struct vmxnet3_rq_driver_stats,
drop_err) },
{ " fcs", offsetof(struct vmxnet3_rq_driver_stats,
drop_fcs) },
{ " rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
rx_buf_alloc_failure) },
{ " xdp packets", offsetof(struct vmxnet3_rq_driver_stats,
xdp_packets) },
{ " xdp tx", offsetof(struct vmxnet3_rq_driver_stats,
xdp_tx) },
{ " xdp redirects", offsetof(struct vmxnet3_rq_driver_stats,
xdp_redirects) },
{ " xdp drops", offsetof(struct vmxnet3_rq_driver_stats,
xdp_drops) },
{ " xdp aborted", offsetof(struct vmxnet3_rq_driver_stats,
xdp_aborted) },
};
/* global stats maintained by the driver */
static const struct vmxnet3_stat_desc
vmxnet3_global_stats[] = {
/* description, offset */
{ "tx timeout count", offsetof(struct vmxnet3_adapter,
tx_timeout_count) }
};
void
vmxnet3_get_stats64(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct vmxnet3_adapter *adapter;
struct vmxnet3_tq_driver_stats *drvTxStats;
struct vmxnet3_rq_driver_stats *drvRxStats;
struct UPT1_TxStats *devTxStats;
struct UPT1_RxStats *devRxStats;
unsigned long flags;
int i;
adapter = netdev_priv(netdev);
/* Collect the dev stats into the shared area */
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
for (i = 0; i < adapter->num_tx_queues; i++) {
devTxStats = &adapter->tqd_start[i].stats;
drvTxStats = &adapter->tx_queue[i].stats;
stats->tx_packets += devTxStats->ucastPktsTxOK +
devTxStats->mcastPktsTxOK +
devTxStats->bcastPktsTxOK;
stats->tx_bytes += devTxStats->ucastBytesTxOK +
devTxStats->mcastBytesTxOK +
devTxStats->bcastBytesTxOK;
stats->tx_errors += devTxStats->pktsTxError;
stats->tx_dropped += drvTxStats->drop_total;
}
for (i = 0; i < adapter->num_rx_queues; i++) {
devRxStats = &adapter->rqd_start[i].stats;
drvRxStats = &adapter->rx_queue[i].stats;
stats->rx_packets += devRxStats->ucastPktsRxOK +
devRxStats->mcastPktsRxOK +
devRxStats->bcastPktsRxOK;
stats->rx_bytes += devRxStats->ucastBytesRxOK +
devRxStats->mcastBytesRxOK +
devRxStats->bcastBytesRxOK;
stats->rx_errors += devRxStats->pktsRxError;
stats->rx_dropped += drvRxStats->drop_total;
stats->multicast += devRxStats->mcastPktsRxOK;
}
}
static int
vmxnet3_get_sset_count(struct net_device *netdev, int sset)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
switch (sset) {
case ETH_SS_STATS:
return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
adapter->num_tx_queues +
(ARRAY_SIZE(vmxnet3_rq_dev_stats) +
ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
adapter->num_rx_queues +
ARRAY_SIZE(vmxnet3_global_stats);
default:
return -EOPNOTSUPP;
}
}
/* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
* the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
* Therefore, if any registers are added, removed or modified, then a version
* bump and a corresponding change in the vmxnet3 support for ethtool(8)
* --register-dump would be required.
*/
static int
vmxnet3_get_regs_len(struct net_device *netdev)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
return ((9 /* BAR1 registers */ +
(1 + adapter->intr.num_intrs) +
(1 + adapter->num_tx_queues * 17 /* Tx queue registers */) +
(1 + adapter->num_rx_queues * 23 /* Rx queue registers */)) *
sizeof(u32));
}
static void
vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
strscpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
strscpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
sizeof(drvinfo->version));
strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
sizeof(drvinfo->bus_info));
}
static void
vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
int i, j;
if (stringset != ETH_SS_STATS)
return;
for (j = 0; j < adapter->num_tx_queues; j++) {
for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
ethtool_sprintf(&buf, vmxnet3_tq_dev_stats[i].desc);
for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
ethtool_sprintf(&buf, vmxnet3_tq_driver_stats[i].desc);
}
for (j = 0; j < adapter->num_rx_queues; j++) {
for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
ethtool_sprintf(&buf, vmxnet3_rq_dev_stats[i].desc);
for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
ethtool_sprintf(&buf, vmxnet3_rq_driver_stats[i].desc);
}
for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
ethtool_sprintf(&buf, vmxnet3_global_stats[i].desc);
}
netdev_features_t vmxnet3_fix_features(struct net_device *netdev,
netdev_features_t features)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
/* If Rx checksum is disabled, then LRO should also be disabled */
if (!(features & NETIF_F_RXCSUM))
features &= ~NETIF_F_LRO;
/* If XDP is enabled, then LRO should not be enabled */
if (vmxnet3_xdp_enabled(adapter) && (features & NETIF_F_LRO)) {
netdev_err(netdev, "LRO is not supported with XDP");
features &= ~NETIF_F_LRO;
}
return features;
}
netdev_features_t vmxnet3_features_check(struct sk_buff *skb,
struct net_device *netdev,
netdev_features_t features)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
/* Validate if the tunneled packet is being offloaded by the device */
if (VMXNET3_VERSION_GE_4(adapter) &&
skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL) {
u8 l4_proto = 0;
u16 port;
struct udphdr *udph;
switch (vlan_get_protocol(skb)) {
case htons(ETH_P_IP):
l4_proto = ip_hdr(skb)->protocol;
break;
case htons(ETH_P_IPV6):
l4_proto = ipv6_hdr(skb)->nexthdr;
break;
default:
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
switch (l4_proto) {
case IPPROTO_UDP:
udph = udp_hdr(skb);
port = be16_to_cpu(udph->dest);
/* Check if offloaded port is supported */
if (port != GENEVE_UDP_PORT &&
port != IANA_VXLAN_UDP_PORT &&
port != VXLAN_UDP_PORT) {
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
break;
default:
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
}
return features;
}
static void vmxnet3_enable_encap_offloads(struct net_device *netdev, netdev_features_t features)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
if (VMXNET3_VERSION_GE_4(adapter)) {
netdev->hw_enc_features |= NETIF_F_SG | NETIF_F_RXCSUM |
NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_LRO;
if (features & NETIF_F_GSO_UDP_TUNNEL)
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM)
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
if (VMXNET3_VERSION_GE_7(adapter)) {
unsigned long flags;
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD;
}
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD;
}
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_GENEVE_TSO)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_TSO;
}
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_VXLAN_TSO)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_TSO;
}
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD;
}
if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD;
}
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR, adapter->dev_caps[0]);
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_DCR0_REG);
adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
if (!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD)) &&
!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD)) &&
!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_TSO)) &&
!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_TSO))) {
netdev->hw_enc_features &= ~NETIF_F_GSO_UDP_TUNNEL;
}
if (!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD)) &&
!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD))) {
netdev->hw_enc_features &= ~NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
}
}
static void vmxnet3_disable_encap_offloads(struct net_device *netdev)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
if (VMXNET3_VERSION_GE_4(adapter)) {
netdev->hw_enc_features &= ~(NETIF_F_SG | NETIF_F_RXCSUM |
NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM);
}
if (VMXNET3_VERSION_GE_7(adapter)) {
unsigned long flags;
adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD |
1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD |
1UL << VMXNET3_CAP_GENEVE_TSO |
1UL << VMXNET3_CAP_VXLAN_TSO |
1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD |
1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR, adapter->dev_caps[0]);
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_DCR0_REG);
adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
}
}
int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
unsigned long flags;
netdev_features_t changed = features ^ netdev->features;
netdev_features_t tun_offload_mask = NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM;
u8 udp_tun_enabled = (netdev->features & tun_offload_mask) != 0;
if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
NETIF_F_HW_VLAN_CTAG_RX | tun_offload_mask)) {
if (features & NETIF_F_RXCSUM)
adapter->shared->devRead.misc.uptFeatures |=
UPT1_F_RXCSUM;
else
adapter->shared->devRead.misc.uptFeatures &=
~UPT1_F_RXCSUM;
/* update hardware LRO capability accordingly */
if (features & NETIF_F_LRO)
adapter->shared->devRead.misc.uptFeatures |=
UPT1_F_LRO;
else
adapter->shared->devRead.misc.uptFeatures &=
~UPT1_F_LRO;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
adapter->shared->devRead.misc.uptFeatures |=
UPT1_F_RXVLAN;
else
adapter->shared->devRead.misc.uptFeatures &=
~UPT1_F_RXVLAN;
if ((features & tun_offload_mask) != 0) {
vmxnet3_enable_encap_offloads(netdev, features);
adapter->shared->devRead.misc.uptFeatures |=
UPT1_F_RXINNEROFLD;
} else if ((features & tun_offload_mask) == 0 &&
udp_tun_enabled) {
vmxnet3_disable_encap_offloads(netdev);
adapter->shared->devRead.misc.uptFeatures &=
~UPT1_F_RXINNEROFLD;
}
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_FEATURE);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
}
return 0;
}
static void
vmxnet3_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *buf)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
unsigned long flags;
u8 *base;
int i;
int j = 0;
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
/* this does assume each counter is 64-bit wide */
for (j = 0; j < adapter->num_tx_queues; j++) {
base = (u8 *)&adapter->tqd_start[j].stats;
*buf++ = (u64)j;
for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
*buf++ = *(u64 *)(base +
vmxnet3_tq_dev_stats[i].offset);
base = (u8 *)&adapter->tx_queue[j].stats;
for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
*buf++ = *(u64 *)(base +
vmxnet3_tq_driver_stats[i].offset);
}
for (j = 0; j < adapter->num_rx_queues; j++) {
base = (u8 *)&adapter->rqd_start[j].stats;
*buf++ = (u64) j;
for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
*buf++ = *(u64 *)(base +
vmxnet3_rq_dev_stats[i].offset);
base = (u8 *)&adapter->rx_queue[j].stats;
for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
*buf++ = *(u64 *)(base +
vmxnet3_rq_driver_stats[i].offset);
}
base = (u8 *)adapter;
for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
*buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
}
/* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
* the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
* Therefore, if any registers are added, removed or modified, then a version
* bump and a corresponding change in the vmxnet3 support for ethtool(8)
* --register-dump would be required.
*/
static void
vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
u32 *buf = p;
int i = 0, j = 0;
memset(p, 0, vmxnet3_get_regs_len(netdev));
regs->version = 2;
/* Update vmxnet3_get_regs_len if we want to dump more registers */
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
buf[j++] = adapter->intr.num_intrs;
for (i = 0; i < adapter->intr.num_intrs; i++) {
buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
+ i * VMXNET3_REG_ALIGN);
}
buf[j++] = adapter->num_tx_queues;
for (i = 0; i < adapter->num_tx_queues; i++) {
struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->tx_prod_offset +
i * VMXNET3_REG_ALIGN);
buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
buf[j++] = tq->tx_ring.size;
buf[j++] = tq->tx_ring.next2fill;
buf[j++] = tq->tx_ring.next2comp;
buf[j++] = tq->tx_ring.gen;
buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
buf[j++] = tq->data_ring.size;
buf[j++] = tq->txdata_desc_size;
buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
buf[j++] = tq->comp_ring.size;
buf[j++] = tq->comp_ring.next2proc;
buf[j++] = tq->comp_ring.gen;
buf[j++] = tq->stopped;
}
buf[j++] = adapter->num_rx_queues;
for (i = 0; i < adapter->num_rx_queues; i++) {
struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->rx_prod_offset +
i * VMXNET3_REG_ALIGN);
buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->rx_prod2_offset +
i * VMXNET3_REG_ALIGN);
buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
buf[j++] = rq->rx_ring[0].size;
buf[j++] = rq->rx_ring[0].next2fill;
buf[j++] = rq->rx_ring[0].next2comp;
buf[j++] = rq->rx_ring[0].gen;
buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
buf[j++] = rq->rx_ring[1].size;
buf[j++] = rq->rx_ring[1].next2fill;
buf[j++] = rq->rx_ring[1].next2comp;
buf[j++] = rq->rx_ring[1].gen;
buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
buf[j++] = rq->rx_ring[0].size;
buf[j++] = rq->data_ring.desc_size;
buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
buf[j++] = rq->comp_ring.size;
buf[j++] = rq->comp_ring.next2proc;
buf[j++] = rq->comp_ring.gen;
}
}
static void
vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
wol->wolopts = adapter->wol;
}
static int
vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
WAKE_MAGICSECURE)) {
return -EOPNOTSUPP;
}
adapter->wol = wol->wolopts;
device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
return 0;
}
static int
vmxnet3_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *ecmd)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
ethtool_link_ksettings_zero_link_mode(ecmd, supported);
ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
ecmd->base.port = PORT_TP;
if (adapter->link_speed) {
ecmd->base.speed = adapter->link_speed;
ecmd->base.duplex = DUPLEX_FULL;
} else {
ecmd->base.speed = SPEED_UNKNOWN;
ecmd->base.duplex = DUPLEX_UNKNOWN;
}
return 0;
}
static void
vmxnet3_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *param,
struct kernel_ethtool_ringparam *kernel_param,
struct netlink_ext_ack *extack)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
param->rx_pending = adapter->rx_ring_size;
param->tx_pending = adapter->tx_ring_size;
param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
adapter->rxdata_desc_size : 0;
param->rx_jumbo_pending = adapter->rx_ring2_size;
}
static int
vmxnet3_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *param,
struct kernel_ethtool_ringparam *kernel_param,
struct netlink_ext_ack *extack)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
u16 new_rxdata_desc_size;
u32 sz;
int err = 0;
if (param->tx_pending == 0 || param->tx_pending >
VMXNET3_TX_RING_MAX_SIZE)
return -EINVAL;
if (param->rx_pending == 0 || param->rx_pending >
VMXNET3_RX_RING_MAX_SIZE)
return -EINVAL;
if (param->rx_jumbo_pending == 0 ||
param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
return -EINVAL;
/* if adapter not yet initialized, do nothing */
if (adapter->rx_buf_per_pkt == 0) {
netdev_err(netdev, "adapter not completely initialized, "
"ring size cannot be changed yet\n");
return -EOPNOTSUPP;
}
if (VMXNET3_VERSION_GE_3(adapter)) {
if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
return -EINVAL;
} else if (param->rx_mini_pending != 0) {
return -EINVAL;
}
/* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
~VMXNET3_RING_SIZE_MASK;
new_tx_ring_size = min_t(u32, new_tx_ring_size,
VMXNET3_TX_RING_MAX_SIZE);
if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
VMXNET3_RING_SIZE_ALIGN) != 0)
return -EINVAL;
/* ring0 has to be a multiple of
* rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
*/
sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
new_rx_ring_size = min_t(u32, new_rx_ring_size,
VMXNET3_RX_RING_MAX_SIZE / sz * sz);
if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
sz) != 0)
return -EINVAL;
/* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
~VMXNET3_RING_SIZE_MASK;
new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
VMXNET3_RX_RING2_MAX_SIZE);
/* For v7 and later, keep ring size power of 2 for UPT */
if (VMXNET3_VERSION_GE_7(adapter)) {
new_tx_ring_size = rounddown_pow_of_two(new_tx_ring_size);
new_rx_ring_size = rounddown_pow_of_two(new_rx_ring_size);
new_rx_ring2_size = rounddown_pow_of_two(new_rx_ring2_size);
}
/* rx data ring buffer size has to be a multiple of
* VMXNET3_RXDATA_DESC_SIZE_ALIGN
*/
new_rxdata_desc_size =
(param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
~VMXNET3_RXDATA_DESC_SIZE_MASK;
new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
VMXNET3_RXDATA_DESC_MAX_SIZE);
if (new_tx_ring_size == adapter->tx_ring_size &&
new_rx_ring_size == adapter->rx_ring_size &&
new_rx_ring2_size == adapter->rx_ring2_size &&
new_rxdata_desc_size == adapter->rxdata_desc_size) {
return 0;
}
/*
* Reset_work may be in the middle of resetting the device, wait for its
* completion.
*/
while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
usleep_range(1000, 2000);
if (netif_running(netdev)) {
vmxnet3_quiesce_dev(adapter);
vmxnet3_reset_dev(adapter);
/* recreate the rx queue and the tx queue based on the
* new sizes */
vmxnet3_tq_destroy_all(adapter);
vmxnet3_rq_destroy_all(adapter);
err = vmxnet3_create_queues(adapter, new_tx_ring_size,
new_rx_ring_size, new_rx_ring2_size,
adapter->txdata_desc_size,
new_rxdata_desc_size);
if (err) {
/* failed, most likely because of OOM, try default
* size */
netdev_err(netdev, "failed to apply new sizes, "
"try the default ones\n");
new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
err = vmxnet3_create_queues(adapter,
new_tx_ring_size,
new_rx_ring_size,
new_rx_ring2_size,
adapter->txdata_desc_size,
new_rxdata_desc_size);
if (err) {
netdev_err(netdev, "failed to create queues "
"with default sizes. Closing it\n");
goto out;
}
}
err = vmxnet3_activate_dev(adapter);
if (err)
netdev_err(netdev, "failed to re-activate, error %d."
" Closing it\n", err);
}
adapter->tx_ring_size = new_tx_ring_size;
adapter->rx_ring_size = new_rx_ring_size;
adapter->rx_ring2_size = new_rx_ring2_size;
adapter->rxdata_desc_size = new_rxdata_desc_size;
out:
clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
if (err)
vmxnet3_force_close(adapter);
return err;
}
static int
vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
struct ethtool_rxnfc *info)
{
enum Vmxnet3_RSSField rss_fields;
if (netif_running(adapter->netdev)) {
unsigned long flags;
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_GET_RSS_FIELDS);
rss_fields = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
} else {
rss_fields = adapter->rss_fields;
}
info->data = 0;
/* Report default options for RSS on vmxnet3 */
switch (info->flow_type) {
case TCP_V4_FLOW:
case TCP_V6_FLOW:
info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
RXH_IP_SRC | RXH_IP_DST;
break;
case UDP_V4_FLOW:
if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP4)
info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
info->data |= RXH_IP_SRC | RXH_IP_DST;
break;
case AH_ESP_V4_FLOW:
case AH_V4_FLOW:
case ESP_V4_FLOW:
if (rss_fields & VMXNET3_RSS_FIELDS_ESPIP4)
info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
fallthrough;
case SCTP_V4_FLOW:
case IPV4_FLOW:
info->data |= RXH_IP_SRC | RXH_IP_DST;
break;
case UDP_V6_FLOW:
if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP6)
info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
info->data |= RXH_IP_SRC | RXH_IP_DST;
break;
case AH_ESP_V6_FLOW:
case AH_V6_FLOW:
case ESP_V6_FLOW:
if (VMXNET3_VERSION_GE_6(adapter) &&
(rss_fields & VMXNET3_RSS_FIELDS_ESPIP6))
info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
fallthrough;
case SCTP_V6_FLOW:
case IPV6_FLOW:
info->data |= RXH_IP_SRC | RXH_IP_DST;
break;
default:
return -EINVAL;
}
return 0;
}
static int
vmxnet3_set_rss_hash_opt(struct net_device *netdev,
struct vmxnet3_adapter *adapter,
struct ethtool_rxnfc *nfc)
{
enum Vmxnet3_RSSField rss_fields = adapter->rss_fields;
/* RSS does not support anything other than hashing
* to queues on src and dst IPs and ports
*/
if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
RXH_L4_B_0_1 | RXH_L4_B_2_3))
return -EINVAL;
switch (nfc->flow_type) {
case TCP_V4_FLOW:
case TCP_V6_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST) ||
!(nfc->data & RXH_L4_B_0_1) ||
!(nfc->data & RXH_L4_B_2_3))
return -EINVAL;
break;
case UDP_V4_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST))
return -EINVAL;
switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
case 0:
rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP4;
break;
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
rss_fields |= VMXNET3_RSS_FIELDS_UDPIP4;
break;
default:
return -EINVAL;
}
break;
case UDP_V6_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST))
return -EINVAL;
switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
case 0:
rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP6;
break;
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
rss_fields |= VMXNET3_RSS_FIELDS_UDPIP6;
break;
default:
return -EINVAL;
}
break;
case ESP_V4_FLOW:
case AH_V4_FLOW:
case AH_ESP_V4_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST))
return -EINVAL;
switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
case 0:
rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP4;
break;
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
rss_fields |= VMXNET3_RSS_FIELDS_ESPIP4;
break;
default:
return -EINVAL;
}
break;
case ESP_V6_FLOW:
case AH_V6_FLOW:
case AH_ESP_V6_FLOW:
if (!VMXNET3_VERSION_GE_6(adapter))
return -EOPNOTSUPP;
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST))
return -EINVAL;
switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
case 0:
rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP6;
break;
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
rss_fields |= VMXNET3_RSS_FIELDS_ESPIP6;
break;
default:
return -EINVAL;
}
break;
case SCTP_V4_FLOW:
case SCTP_V6_FLOW:
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST) ||
(nfc->data & RXH_L4_B_0_1) ||
(nfc->data & RXH_L4_B_2_3))
return -EINVAL;
break;
default:
return -EINVAL;
}
/* if we changed something we need to update flags */
if (rss_fields != adapter->rss_fields) {
adapter->default_rss_fields = false;
if (netif_running(netdev)) {
struct Vmxnet3_DriverShared *shared = adapter->shared;
union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
unsigned long flags;
if (VMXNET3_VERSION_GE_7(adapter)) {
if ((rss_fields & VMXNET3_RSS_FIELDS_UDPIP4 ||
rss_fields & VMXNET3_RSS_FIELDS_UDPIP6) &&
vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_UDP_RSS)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_UDP_RSS;
} else {
adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_UDP_RSS);
}
if ((rss_fields & VMXNET3_RSS_FIELDS_ESPIP4) &&
vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_ESP_RSS_IPV4)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_ESP_RSS_IPV4;
} else {
adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_ESP_RSS_IPV4);
}
if ((rss_fields & VMXNET3_RSS_FIELDS_ESPIP6) &&
vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
VMXNET3_CAP_ESP_RSS_IPV6)) {
adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_ESP_RSS_IPV6;
} else {
adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_ESP_RSS_IPV6);
}
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR,
adapter->dev_caps[0]);
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_GET_DCR0_REG);
adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter,
VMXNET3_REG_CMD);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
}
spin_lock_irqsave(&adapter->cmd_lock, flags);
cmdInfo->setRssFields = rss_fields;
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_SET_RSS_FIELDS);
/* Not all requested RSS may get applied, so get and
* cache what was actually applied.
*/
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_GET_RSS_FIELDS);
adapter->rss_fields =
VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
} else {
/* When the device is activated, we will try to apply
* these rules and cache the applied value later.
*/
adapter->rss_fields = rss_fields;
}
}
return 0;
}
static int
vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
u32 *rules)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
int err = 0;
switch (info->cmd) {
case ETHTOOL_GRXRINGS:
info->data = adapter->num_rx_queues;
break;
case ETHTOOL_GRXFH:
if (!VMXNET3_VERSION_GE_4(adapter)) {
err = -EOPNOTSUPP;
break;
}
#ifdef VMXNET3_RSS
if (!adapter->rss) {
err = -EOPNOTSUPP;
break;
}
#endif
err = vmxnet3_get_rss_hash_opts(adapter, info);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int
vmxnet3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
int err = 0;
if (!VMXNET3_VERSION_GE_4(adapter)) {
err = -EOPNOTSUPP;
goto done;
}
#ifdef VMXNET3_RSS
if (!adapter->rss) {
err = -EOPNOTSUPP;
goto done;
}
#endif
switch (info->cmd) {
case ETHTOOL_SRXFH:
err = vmxnet3_set_rss_hash_opt(netdev, adapter, info);
break;
default:
err = -EOPNOTSUPP;
break;
}
done:
return err;
}
#ifdef VMXNET3_RSS
static u32
vmxnet3_get_rss_indir_size(struct net_device *netdev)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct UPT1_RSSConf *rssConf = adapter->rss_conf;
return rssConf->indTableSize;
}
static int
vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct UPT1_RSSConf *rssConf = adapter->rss_conf;
unsigned int n = rssConf->indTableSize;
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
if (!p)
return 0;
if (n > UPT1_RSS_MAX_IND_TABLE_SIZE)
return 0;
while (n--)
p[n] = rssConf->indTable[n];
return 0;
}
static int
vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
const u8 hfunc)
{
unsigned int i;
unsigned long flags;
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct UPT1_RSSConf *rssConf = adapter->rss_conf;
/* We do not allow change in unsupported parameters */
if (key ||
(hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
return -EOPNOTSUPP;
if (!p)
return 0;
for (i = 0; i < rssConf->indTableSize; i++)
rssConf->indTable[i] = p[i];
spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_RSSIDT);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
return 0;
}
#endif
static int vmxnet3_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
if (!VMXNET3_VERSION_GE_3(adapter))
return -EOPNOTSUPP;
switch (adapter->coal_conf->coalMode) {
case VMXNET3_COALESCE_DISABLED:
/* struct ethtool_coalesce is already initialized to 0 */
break;
case VMXNET3_COALESCE_ADAPT:
ec->use_adaptive_rx_coalesce = true;
break;
case VMXNET3_COALESCE_STATIC:
ec->tx_max_coalesced_frames =
adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
ec->rx_max_coalesced_frames =
adapter->coal_conf->coalPara.coalStatic.rx_depth;
break;
case VMXNET3_COALESCE_RBC: {
u32 rbc_rate;
rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
}
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int vmxnet3_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct Vmxnet3_DriverShared *shared = adapter->shared;
union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
unsigned long flags;
if (!VMXNET3_VERSION_GE_3(adapter))
return -EOPNOTSUPP;
if ((ec->rx_coalesce_usecs == 0) &&
(ec->use_adaptive_rx_coalesce == 0) &&
(ec->tx_max_coalesced_frames == 0) &&
(ec->rx_max_coalesced_frames == 0)) {
memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
goto done;
}
if (ec->rx_coalesce_usecs != 0) {
u32 rbc_rate;
if ((ec->use_adaptive_rx_coalesce != 0) ||
(ec->tx_max_coalesced_frames != 0) ||
(ec->rx_max_coalesced_frames != 0)) {
return -EINVAL;
}
rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
return -EINVAL;
}
memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
goto done;
}
if (ec->use_adaptive_rx_coalesce != 0) {
if (ec->tx_max_coalesced_frames != 0 ||
ec->rx_max_coalesced_frames != 0) {
return -EINVAL;
}
memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
goto done;
}
if ((ec->tx_max_coalesced_frames != 0) ||
(ec->rx_max_coalesced_frames != 0)) {
if ((ec->tx_max_coalesced_frames >
VMXNET3_COAL_STATIC_MAX_DEPTH) ||
(ec->rx_max_coalesced_frames >
VMXNET3_COAL_STATIC_MAX_DEPTH)) {
return -EINVAL;
}
memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
(ec->tx_max_coalesced_frames ?
ec->tx_max_coalesced_frames :
VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
adapter->coal_conf->coalPara.coalStatic.rx_depth =
(ec->rx_max_coalesced_frames ?
ec->rx_max_coalesced_frames :
VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
adapter->coal_conf->coalPara.coalStatic.tx_depth =
VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
goto done;
}
done:
adapter->default_coal_mode = false;
if (netif_running(netdev)) {
spin_lock_irqsave(&adapter->cmd_lock, flags);
cmdInfo->varConf.confVer = 1;
cmdInfo->varConf.confLen =
cpu_to_le32(sizeof(*adapter->coal_conf));
cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_SET_COALESCE);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
}
return 0;
}
static void vmxnet3_get_channels(struct net_device *netdev,
struct ethtool_channels *ec)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
if (IS_ENABLED(CONFIG_PCI_MSI) && adapter->intr.type == VMXNET3_IT_MSIX) {
if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) {
ec->combined_count = adapter->num_tx_queues;
} else {
ec->rx_count = adapter->num_rx_queues;
ec->tx_count =
adapter->share_intr == VMXNET3_INTR_TXSHARE ?
1 : adapter->num_tx_queues;
}
} else {
ec->combined_count = 1;
}
ec->other_count = 1;
/* Number of interrupts cannot be changed on the fly */
/* Just set maximums to actual values */
ec->max_rx = ec->rx_count;
ec->max_tx = ec->tx_count;
ec->max_combined = ec->combined_count;
ec->max_other = ec->other_count;
}
static const struct ethtool_ops vmxnet3_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
.get_drvinfo = vmxnet3_get_drvinfo,
.get_regs_len = vmxnet3_get_regs_len,
.get_regs = vmxnet3_get_regs,
.get_wol = vmxnet3_get_wol,
.set_wol = vmxnet3_set_wol,
.get_link = ethtool_op_get_link,
.get_coalesce = vmxnet3_get_coalesce,
.set_coalesce = vmxnet3_set_coalesce,
.get_strings = vmxnet3_get_strings,
.get_sset_count = vmxnet3_get_sset_count,
.get_ethtool_stats = vmxnet3_get_ethtool_stats,
.get_ringparam = vmxnet3_get_ringparam,
.set_ringparam = vmxnet3_set_ringparam,
.get_rxnfc = vmxnet3_get_rxnfc,
.set_rxnfc = vmxnet3_set_rxnfc,
#ifdef VMXNET3_RSS
.get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
.get_rxfh = vmxnet3_get_rss,
.set_rxfh = vmxnet3_set_rss,
#endif
.get_link_ksettings = vmxnet3_get_link_ksettings,
.get_channels = vmxnet3_get_channels,
};
void vmxnet3_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &vmxnet3_ethtool_ops;
}
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