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nvethernet: enable tx interrupt coalescing

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Tx frame count and software timer based interrupt coalescing
is enabled. Tx frame count based interrupt coalescing can be
enabled only when tx software timer based interrupt coalescing
is also enabled.

Bug 200529168

Change-Id: I8ac701c86238e8d34d7dbe9924df1162083c023e
Signed-off-by: Ajay Gupta <ajayg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2234610
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Ajay Gupta
2019-11-04 15:05:51 -08:00
committed by Revanth Kumar Uppala
parent 5a14f39d86
commit 97dede3ff9
3 changed files with 149 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/net/ethernet/nvidia/nvethernet/ethtool.c
View File

@@ -116,6 +116,10 @@ static const struct eqos_stats eqos_gstrings_stats[] = {
EQOS_EXTRA_STAT(tx_normal_irq_n[1]),
EQOS_EXTRA_STAT(tx_normal_irq_n[2]),
EQOS_EXTRA_STAT(tx_normal_irq_n[3]),
EQOS_EXTRA_STAT(tx_usecs_swtimer_n[0]),
EQOS_EXTRA_STAT(tx_usecs_swtimer_n[1]),
EQOS_EXTRA_STAT(tx_usecs_swtimer_n[2]),
EQOS_EXTRA_STAT(tx_usecs_swtimer_n[3]),
EQOS_EXTRA_STAT(rx_normal_irq_n[0]),
EQOS_EXTRA_STAT(rx_normal_irq_n[1]),
EQOS_EXTRA_STAT(rx_normal_irq_n[2]),
@@ -579,11 +583,42 @@ static int ether_set_coalesce(struct net_device *dev,
(ec->rx_max_coalesced_frames_high) ||
(ec->tx_max_coalesced_frames_irq) ||
(ec->stats_block_coalesce_usecs) ||
(ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval) ||
(ec->tx_coalesce_usecs) || (ec->tx_max_coalesced_frames)) {
(ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval)) {
return -EOPNOTSUPP;
}
if (ec->tx_max_coalesced_frames == OSI_DISABLE) {
osi_dma->use_tx_frames = OSI_DISABLE;
} else if ((ec->tx_max_coalesced_frames > ETHER_TX_MAX_FRAME) ||
(ec->tx_max_coalesced_frames < OSI_MIN_TX_COALESCE_FRAMES)) {
netdev_err(dev,
"invalid tx-frames, must be in the range of"
" %d to %ld frames\n", OSI_MIN_TX_COALESCE_FRAMES,
ETHER_TX_MAX_FRAME);
return -EINVAL;
} else {
osi_dma->use_tx_frames = OSI_ENABLE;
}
if (ec->tx_coalesce_usecs == OSI_DISABLE) {
osi_dma->use_tx_usecs = OSI_DISABLE;
} else if ((ec->tx_coalesce_usecs > OSI_MAX_TX_COALESCE_USEC) ||
(ec->tx_coalesce_usecs < OSI_MIN_TX_COALESCE_USEC)) {
netdev_err(dev,
"invalid tx_usecs, must be in a range of"
" %d to %d usec\n", OSI_MIN_TX_COALESCE_USEC,
OSI_MAX_TX_COALESCE_USEC);
return -EINVAL;
} else {
osi_dma->use_tx_usecs = OSI_ENABLE;
}
netdev_err(dev, "TX COALESCING USECS is %s\n", osi_dma->use_tx_usecs ?
"ENABLED" : "DISABLED");
netdev_err(dev, "TX COALESCING FRAMES is %s\n", osi_dma->use_tx_frames ?
"ENABLED" : "DISABLED");
if (ec->rx_max_coalesced_frames == OSI_DISABLE) {
osi_dma->use_rx_frames = OSI_DISABLE;
} else if ((ec->rx_max_coalesced_frames > RX_DESC_CNT) ||
@@ -610,6 +645,12 @@ static int ether_set_coalesce(struct net_device *dev,
osi_dma->use_riwt = OSI_ENABLE;
}
if (osi_dma->use_tx_usecs == OSI_DISABLE &&
osi_dma->use_tx_frames == OSI_ENABLE) {
netdev_err(dev, "invalid settings : tx-frames must be enabled"
" along with tx-usecs\n");
return -EINVAL;
}
if (osi_dma->use_riwt == OSI_DISABLE &&
osi_dma->use_rx_frames == OSI_ENABLE) {
netdev_err(dev, "invalid settings : rx-frames must be enabled"
@@ -624,6 +665,8 @@ static int ether_set_coalesce(struct net_device *dev,
osi_dma->rx_riwt = ec->rx_coalesce_usecs;
osi_dma->rx_frames = ec->rx_max_coalesced_frames;
osi_dma->tx_usecs = ec->tx_coalesce_usecs;
osi_dma->tx_frames = ec->tx_max_coalesced_frames;
return 0;
}
@@ -651,6 +694,8 @@ static int ether_get_coalesce(struct net_device *dev,
memset(ec, 0, sizeof(struct ethtool_coalesce));
ec->rx_coalesce_usecs = osi_dma->rx_riwt;
ec->rx_max_coalesced_frames = osi_dma->rx_frames;
ec->tx_coalesce_usecs = osi_dma->tx_usecs;
ec->tx_max_coalesced_frames = osi_dma->tx_frames;
return 0;
}