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tg3: Add support for ethtool -L|-l to get/set the number of rings.

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Default remains the same.

Reviewed-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2012-09-28 07:12:42 +00:00 committed by David S. Miller
parent 6513859479
commit 0968169c92
2 changed files with 63 additions and 3 deletions
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64
drivers/net/ethernet/broadcom/tg3.c
View File

@ -10239,11 +10239,15 @@ static bool tg3_enable_msix(struct tg3 *tp)
int i, rc;
struct msix_entry msix_ent[tp->irq_max];
tp->rxq_cnt = netif_get_num_default_rss_queues();
tp->txq_cnt = tp->txq_req;
tp->rxq_cnt = tp->rxq_req;
if (!tp->rxq_cnt)
tp->rxq_cnt = netif_get_num_default_rss_queues();
if (tp->rxq_cnt > tp->rxq_max)
tp->rxq_cnt = tp->rxq_max;
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) &&
!tp->txq_req)
tp->txq_cnt = min(tp->rxq_cnt, tp->txq_max);
tp->irq_cnt = tg3_irq_count(tp);
@ -11384,6 +11388,58 @@ static int tg3_set_rxfh_indir(struct net_device *dev, const u32 *indir)
return 0;
}
static void tg3_get_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
struct tg3 *tp = netdev_priv(dev);
u32 deflt_qs = netif_get_num_default_rss_queues();
channel->max_rx = tp->rxq_max;
channel->max_tx = tp->txq_max;
if (netif_running(dev)) {
channel->rx_count = tp->rxq_cnt;
channel->tx_count = tp->txq_cnt;
} else {
if (tp->rxq_req)
channel->rx_count = tp->rxq_req;
else
channel->rx_count = min(deflt_qs, tp->rxq_max);
if (tp->txq_req)
channel->tx_count = tp->txq_req;
else
channel->tx_count = min(deflt_qs, tp->txq_max);
}
}
static int tg3_set_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
struct tg3 *tp = netdev_priv(dev);
if (!tg3_flag(tp, SUPPORT_MSIX))
return -EOPNOTSUPP;
if (channel->rx_count > tp->rxq_max ||
channel->tx_count > tp->txq_max)
return -EINVAL;
tp->rxq_req = channel->rx_count;
tp->txq_req = channel->tx_count;
if (!netif_running(dev))
return 0;
tg3_stop(tp);
netif_carrier_off(dev);
tg3_start(tp, true, false);
return 0;
}
static void tg3_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
{
switch (stringset) {
@ -12632,6 +12688,8 @@ static const struct ethtool_ops tg3_ethtool_ops = {
.get_rxfh_indir_size = tg3_get_rxfh_indir_size,
.get_rxfh_indir = tg3_get_rxfh_indir,
.set_rxfh_indir = tg3_set_rxfh_indir,
.get_channels = tg3_get_channels,
.set_channels = tg3_set_channels,
.get_ts_info = ethtool_op_get_ts_info,
};

2
drivers/net/ethernet/broadcom/tg3.h
View File

@ -3038,6 +3038,7 @@ struct tg3 {
void (*write32_tx_mbox) (struct tg3 *, u32,
u32);
u32 dma_limit;
u32 txq_req;
u32 txq_cnt;
u32 txq_max;
@ -3054,6 +3055,7 @@ struct tg3 {
u32 rx_std_max_post;
u32 rx_offset;
u32 rx_pkt_map_sz;
u32 rxq_req;
u32 rxq_cnt;
u32 rxq_max;
bool rx_refill;