Commit de218073 authored by David S. Miller's avatar David S. Miller

Merge branch 'enic-Additional-ethtool-support'

Parvi Kaustubhi says:

====================
enic: Additional ethtool support

This patch set allows the user to show or modify rx/tx ring sizes using
ethtool.

v2:
- remove unused variable to fix build warning.
- update list of maintainers for cisco vic ethernet nic driver.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 59c1cecc 8af67d34
......@@ -3422,7 +3422,7 @@ F: drivers/scsi/snic/
CISCO VIC ETHERNET NIC DRIVER
M: Christian Benvenuti <benve@cisco.com>
M: Govindarajulu Varadarajan <_govind@gmx.com>
M: Neel Patel <neepatel@cisco.com>
M: Parvi Kaustubhi <pkaustub@cisco.com>
S: Supported
F: drivers/net/ethernet/cisco/enic/
......
......@@ -33,7 +33,7 @@
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
#define DRV_VERSION "2.3.0.42"
#define DRV_VERSION "2.3.0.45"
#define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
#define ENIC_BARS_MAX 6
......
......@@ -176,6 +176,81 @@ static void enic_get_strings(struct net_device *netdev, u32 stringset,
}
}
static void enic_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_enet_config *c = &enic->config;
ring->rx_max_pending = ENIC_MAX_RQ_DESCS;
ring->rx_pending = c->rq_desc_count;
ring->tx_max_pending = ENIC_MAX_WQ_DESCS;
ring->tx_pending = c->wq_desc_count;
}
static int enic_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_enet_config *c = &enic->config;
int running = netif_running(netdev);
unsigned int rx_pending;
unsigned int tx_pending;
int err = 0;
if (ring->rx_mini_max_pending || ring->rx_mini_pending) {
netdev_info(netdev,
"modifying mini ring params is not supported");
return -EINVAL;
}
if (ring->rx_jumbo_max_pending || ring->rx_jumbo_pending) {
netdev_info(netdev,
"modifying jumbo ring params is not supported");
return -EINVAL;
}
rx_pending = c->rq_desc_count;
tx_pending = c->wq_desc_count;
if (ring->rx_pending > ENIC_MAX_RQ_DESCS ||
ring->rx_pending < ENIC_MIN_RQ_DESCS) {
netdev_info(netdev, "rx pending (%u) not in range [%u,%u]",
ring->rx_pending, ENIC_MIN_RQ_DESCS,
ENIC_MAX_RQ_DESCS);
return -EINVAL;
}
if (ring->tx_pending > ENIC_MAX_WQ_DESCS ||
ring->tx_pending < ENIC_MIN_WQ_DESCS) {
netdev_info(netdev, "tx pending (%u) not in range [%u,%u]",
ring->tx_pending, ENIC_MIN_WQ_DESCS,
ENIC_MAX_WQ_DESCS);
return -EINVAL;
}
if (running)
dev_close(netdev);
c->rq_desc_count =
ring->rx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
c->wq_desc_count =
ring->tx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
enic_free_vnic_resources(enic);
err = enic_alloc_vnic_resources(enic);
if (err) {
netdev_err(netdev,
"Failed to alloc vNIC resources, aborting\n");
enic_free_vnic_resources(enic);
goto err_out;
}
enic_init_vnic_resources(enic);
if (running) {
err = dev_open(netdev);
if (err)
goto err_out;
}
return 0;
err_out:
c->rq_desc_count = rx_pending;
c->wq_desc_count = tx_pending;
return err;
}
static int enic_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
......@@ -509,6 +584,8 @@ static const struct ethtool_ops enic_ethtool_ops = {
.set_msglevel = enic_set_msglevel,
.get_link = ethtool_op_get_link,
.get_strings = enic_get_strings,
.get_ringparam = enic_get_ringparam,
.set_ringparam = enic_set_ringparam,
.get_sset_count = enic_get_sset_count,
.get_ethtool_stats = enic_get_ethtool_stats,
.get_coalesce = enic_get_coalesce,
......
......@@ -139,19 +139,7 @@ void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u32 fetch_index = 0;
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */
/* Hardware surprise removal: reset fetch_index */
fetch_index = 0;
}
vnic_rq_init_start(rq, cq_index,
fetch_index, fetch_index,
error_interrupt_enable,
vnic_rq_init_start(rq, cq_index, 0, 0, error_interrupt_enable,
error_interrupt_offset);
}
......
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