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linux-kernel-test/drivers/net/qlge/qlge_ethtool.c
Ron Mercer b2014ff8ac qlge: Get rid of 'default' rx_ring type. 
Currently we have three types of RX rings.

1) Default ring - services rx_ring for broadcast/multicast, handles
firmware events, and errors.

2) TX completion ring - handles only outbound completions.

3) RSS ring - handles only inbound completions.

This patch gets rid of the default ring type and moves it's functionality
into the first RSS ring.  This makes better use of MSIX vectors since
they are a limited resource on some platforms.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-28 23:22:28 -07:00

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#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/pagemap.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/dmapool.h>
#include <linux/mempool.h>
#include <linux/spinlock.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ipv6.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <linux/if_vlan.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include "qlge.h"
static int ql_update_ring_coalescing(struct ql_adapter *qdev)
{
int i, status = 0;
struct rx_ring *rx_ring;
struct cqicb *cqicb;
if (!netif_running(qdev->ndev))
return status;
spin_lock(&qdev->hw_lock);
/* Skip the default queue, and update the outbound handler
* queues if they changed.
*/
cqicb = (struct cqicb *)&qdev->rx_ring[qdev->rss_ring_count];
if (le16_to_cpu(cqicb->irq_delay) != qdev->tx_coalesce_usecs ||
le16_to_cpu(cqicb->pkt_delay) !=
qdev->tx_max_coalesced_frames) {
for (i = qdev->rss_ring_count; i < qdev->rx_ring_count; i++) {
rx_ring = &qdev->rx_ring[i];
cqicb = (struct cqicb *)rx_ring;
cqicb->irq_delay = cpu_to_le16(qdev->tx_coalesce_usecs);
cqicb->pkt_delay =
cpu_to_le16(qdev->tx_max_coalesced_frames);
cqicb->flags = FLAGS_LI;
status = ql_write_cfg(qdev, cqicb, sizeof(*cqicb),
CFG_LCQ, rx_ring->cq_id);
if (status) {
QPRINTK(qdev, IFUP, ERR,
"Failed to load CQICB.\n");
goto exit;
}
}
}
/* Update the inbound (RSS) handler queues if they changed. */
cqicb = (struct cqicb *)&qdev->rx_ring[0];
if (le16_to_cpu(cqicb->irq_delay) != qdev->rx_coalesce_usecs ||
le16_to_cpu(cqicb->pkt_delay) !=
qdev->rx_max_coalesced_frames) {
for (i = 0; i < qdev->rss_ring_count; i++, rx_ring++) {
rx_ring = &qdev->rx_ring[i];
cqicb = (struct cqicb *)rx_ring;
cqicb->irq_delay = cpu_to_le16(qdev->rx_coalesce_usecs);
cqicb->pkt_delay =
cpu_to_le16(qdev->rx_max_coalesced_frames);
cqicb->flags = FLAGS_LI;
status = ql_write_cfg(qdev, cqicb, sizeof(*cqicb),
CFG_LCQ, rx_ring->cq_id);
if (status) {
QPRINTK(qdev, IFUP, ERR,
"Failed to load CQICB.\n");
goto exit;
}
}
}
exit:
spin_unlock(&qdev->hw_lock);
return status;
}
static void ql_update_stats(struct ql_adapter *qdev)
{
u32 i;
u64 data;
u64 *iter = &qdev->nic_stats.tx_pkts;
spin_lock(&qdev->stats_lock);
if (ql_sem_spinlock(qdev, qdev->xg_sem_mask)) {
QPRINTK(qdev, DRV, ERR,
"Couldn't get xgmac sem.\n");
goto quit;
}
/*
* Get TX statistics.
*/
for (i = 0x200; i < 0x280; i += 8) {
if (ql_read_xgmac_reg64(qdev, i, &data)) {
QPRINTK(qdev, DRV, ERR,
"Error reading status register 0x%.04x.\n", i);
goto end;
} else
*iter = data;
iter++;
}
/*
* Get RX statistics.
*/
for (i = 0x300; i < 0x3d0; i += 8) {
if (ql_read_xgmac_reg64(qdev, i, &data)) {
QPRINTK(qdev, DRV, ERR,
"Error reading status register 0x%.04x.\n", i);
goto end;
} else
*iter = data;
iter++;
}
end:
ql_sem_unlock(qdev, qdev->xg_sem_mask);
quit:
spin_unlock(&qdev->stats_lock);
QL_DUMP_STAT(qdev);
return;
}
static char ql_stats_str_arr[][ETH_GSTRING_LEN] = {
{"tx_pkts"},
{"tx_bytes"},
{"tx_mcast_pkts"},
{"tx_bcast_pkts"},
{"tx_ucast_pkts"},
{"tx_ctl_pkts"},
{"tx_pause_pkts"},
{"tx_64_pkts"},
{"tx_65_to_127_pkts"},
{"tx_128_to_255_pkts"},
{"tx_256_511_pkts"},
{"tx_512_to_1023_pkts"},
{"tx_1024_to_1518_pkts"},
{"tx_1519_to_max_pkts"},
{"tx_undersize_pkts"},
{"tx_oversize_pkts"},
{"rx_bytes"},
{"rx_bytes_ok"},
{"rx_pkts"},
{"rx_pkts_ok"},
{"rx_bcast_pkts"},
{"rx_mcast_pkts"},
{"rx_ucast_pkts"},
{"rx_undersize_pkts"},
{"rx_oversize_pkts"},
{"rx_jabber_pkts"},
{"rx_undersize_fcerr_pkts"},
{"rx_drop_events"},
{"rx_fcerr_pkts"},
{"rx_align_err"},
{"rx_symbol_err"},
{"rx_mac_err"},
{"rx_ctl_pkts"},
{"rx_pause_pkts"},
{"rx_64_pkts"},
{"rx_65_to_127_pkts"},
{"rx_128_255_pkts"},
{"rx_256_511_pkts"},
{"rx_512_to_1023_pkts"},
{"rx_1024_to_1518_pkts"},
{"rx_1519_to_max_pkts"},
{"rx_len_err_pkts"},
};
static void ql_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
{
switch (stringset) {
case ETH_SS_STATS:
memcpy(buf, ql_stats_str_arr, sizeof(ql_stats_str_arr));
break;
}
}
static int ql_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return ARRAY_SIZE(ql_stats_str_arr);
default:
return -EOPNOTSUPP;
}
}
static void
ql_get_ethtool_stats(struct net_device *ndev,
struct ethtool_stats *stats, u64 *data)
{
struct ql_adapter *qdev = netdev_priv(ndev);
struct nic_stats *s = &qdev->nic_stats;
ql_update_stats(qdev);
*data++ = s->tx_pkts;
*data++ = s->tx_bytes;
*data++ = s->tx_mcast_pkts;
*data++ = s->tx_bcast_pkts;
*data++ = s->tx_ucast_pkts;
*data++ = s->tx_ctl_pkts;
*data++ = s->tx_pause_pkts;
*data++ = s->tx_64_pkt;
*data++ = s->tx_65_to_127_pkt;
*data++ = s->tx_128_to_255_pkt;
*data++ = s->tx_256_511_pkt;
*data++ = s->tx_512_to_1023_pkt;
*data++ = s->tx_1024_to_1518_pkt;
*data++ = s->tx_1519_to_max_pkt;
*data++ = s->tx_undersize_pkt;
*data++ = s->tx_oversize_pkt;
*data++ = s->rx_bytes;
*data++ = s->rx_bytes_ok;
*data++ = s->rx_pkts;
*data++ = s->rx_pkts_ok;
*data++ = s->rx_bcast_pkts;
*data++ = s->rx_mcast_pkts;
*data++ = s->rx_ucast_pkts;
*data++ = s->rx_undersize_pkts;
*data++ = s->rx_oversize_pkts;
*data++ = s->rx_jabber_pkts;
*data++ = s->rx_undersize_fcerr_pkts;
*data++ = s->rx_drop_events;
*data++ = s->rx_fcerr_pkts;
*data++ = s->rx_align_err;
*data++ = s->rx_symbol_err;
*data++ = s->rx_mac_err;
*data++ = s->rx_ctl_pkts;
*data++ = s->rx_pause_pkts;
*data++ = s->rx_64_pkts;
*data++ = s->rx_65_to_127_pkts;
*data++ = s->rx_128_255_pkts;
*data++ = s->rx_256_511_pkts;
*data++ = s->rx_512_to_1023_pkts;
*data++ = s->rx_1024_to_1518_pkts;
*data++ = s->rx_1519_to_max_pkts;
*data++ = s->rx_len_err_pkts;
}
static int ql_get_settings(struct net_device *ndev,
struct ethtool_cmd *ecmd)
{
struct ql_adapter *qdev = netdev_priv(ndev);
ecmd->supported = SUPPORTED_10000baseT_Full;
ecmd->advertising = ADVERTISED_10000baseT_Full;
ecmd->autoneg = AUTONEG_ENABLE;
ecmd->transceiver = XCVR_EXTERNAL;
if ((qdev->link_status & STS_LINK_TYPE_MASK) ==
STS_LINK_TYPE_10GBASET) {
ecmd->supported |= (SUPPORTED_TP | SUPPORTED_Autoneg);
ecmd->advertising |= (ADVERTISED_TP | ADVERTISED_Autoneg);
ecmd->port = PORT_TP;
} else {
ecmd->supported |= SUPPORTED_FIBRE;
ecmd->advertising |= ADVERTISED_FIBRE;
ecmd->port = PORT_FIBRE;
}
ecmd->speed = SPEED_10000;
ecmd->duplex = DUPLEX_FULL;
return 0;
}
static void ql_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *drvinfo)
{
struct ql_adapter *qdev = netdev_priv(ndev);
strncpy(drvinfo->driver, qlge_driver_name, 32);
strncpy(drvinfo->version, qlge_driver_version, 32);
snprintf(drvinfo->fw_version, 32, "v%d.%d.%d",
(qdev->fw_rev_id & 0x00ff0000) >> 16,
(qdev->fw_rev_id & 0x0000ff00) >> 8,
(qdev->fw_rev_id & 0x000000ff));
strncpy(drvinfo->bus_info, pci_name(qdev->pdev), 32);
drvinfo->n_stats = 0;
drvinfo->testinfo_len = 0;
drvinfo->regdump_len = 0;
drvinfo->eedump_len = 0;
}
static int ql_get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
{
struct ql_adapter *qdev = netdev_priv(dev);
c->rx_coalesce_usecs = qdev->rx_coalesce_usecs;
c->tx_coalesce_usecs = qdev->tx_coalesce_usecs;
/* This chip coalesces as follows:
* If a packet arrives, hold off interrupts until
* cqicb->int_delay expires, but if no other packets arrive don't
* wait longer than cqicb->pkt_int_delay. But ethtool doesn't use a
* timer to coalesce on a frame basis. So, we have to take ethtool's
* max_coalesced_frames value and convert it to a delay in microseconds.
* We do this by using a basic thoughput of 1,000,000 frames per
* second @ (1024 bytes). This means one frame per usec. So it's a
* simple one to one ratio.
*/
c->rx_max_coalesced_frames = qdev->rx_max_coalesced_frames;
c->tx_max_coalesced_frames = qdev->tx_max_coalesced_frames;
return 0;
}
static int ql_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *c)
{
struct ql_adapter *qdev = netdev_priv(ndev);
/* Validate user parameters. */
if (c->rx_coalesce_usecs > qdev->rx_ring_size / 2)
return -EINVAL;
/* Don't wait more than 10 usec. */
if (c->rx_max_coalesced_frames > MAX_INTER_FRAME_WAIT)
return -EINVAL;
if (c->tx_coalesce_usecs > qdev->tx_ring_size / 2)
return -EINVAL;
if (c->tx_max_coalesced_frames > MAX_INTER_FRAME_WAIT)
return -EINVAL;
/* Verify a change took place before updating the hardware. */
if (qdev->rx_coalesce_usecs == c->rx_coalesce_usecs &&
qdev->tx_coalesce_usecs == c->tx_coalesce_usecs &&
qdev->rx_max_coalesced_frames == c->rx_max_coalesced_frames &&
qdev->tx_max_coalesced_frames == c->tx_max_coalesced_frames)
return 0;
qdev->rx_coalesce_usecs = c->rx_coalesce_usecs;
qdev->tx_coalesce_usecs = c->tx_coalesce_usecs;
qdev->rx_max_coalesced_frames = c->rx_max_coalesced_frames;
qdev->tx_max_coalesced_frames = c->tx_max_coalesced_frames;
return ql_update_ring_coalescing(qdev);
}
static u32 ql_get_rx_csum(struct net_device *netdev)
{
struct ql_adapter *qdev = netdev_priv(netdev);
return qdev->rx_csum;
}
static int ql_set_rx_csum(struct net_device *netdev, uint32_t data)
{
struct ql_adapter *qdev = netdev_priv(netdev);
qdev->rx_csum = data;
return 0;
}
static int ql_set_tso(struct net_device *ndev, uint32_t data)
{
if (data) {
ndev->features |= NETIF_F_TSO;
ndev->features |= NETIF_F_TSO6;
} else {
ndev->features &= ~NETIF_F_TSO;
ndev->features &= ~NETIF_F_TSO6;
}
return 0;
}
static u32 ql_get_msglevel(struct net_device *ndev)
{
struct ql_adapter *qdev = netdev_priv(ndev);
return qdev->msg_enable;
}
static void ql_set_msglevel(struct net_device *ndev, u32 value)
{
struct ql_adapter *qdev = netdev_priv(ndev);
qdev->msg_enable = value;
}
const struct ethtool_ops qlge_ethtool_ops = {
.get_settings = ql_get_settings,
.get_drvinfo = ql_get_drvinfo,
.get_msglevel = ql_get_msglevel,
.set_msglevel = ql_set_msglevel,
.get_link = ethtool_op_get_link,
.get_rx_csum = ql_get_rx_csum,
.set_rx_csum = ql_set_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ethtool_op_set_tx_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
.set_tso = ql_set_tso,
.get_coalesce = ql_get_coalesce,
.set_coalesce = ql_set_coalesce,
.get_sset_count = ql_get_sset_count,
.get_strings = ql_get_strings,
.get_ethtool_stats = ql_get_ethtool_stats,
};
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