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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2023-03-27 11:57:58 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-03-28 16:29:22 +0300 |
| commit | 5c8560c4a19fc3e400715a347ce82bd909e3ac74 (patch) | |
| tree | 0db4f0581523e85355056dea52165d767ad6a464 /drivers/net/ethernet/ti/am65-cpsw-nuss.c | |
| parent | d8b0c963e9191cbb43b6979835f31dc52f9fd095 (diff) | |
| download | linux-5c8560c4a19fc3e400715a347ce82bd909e3ac74.tar.xz | |
net: ethernet: ti: am65-cpsw: add .ndo to set dma per-queue rate
Enable rate limiting TX DMA queues for CPSW interface by configuring the
rate in absolute Mb/s units per TX queue.
Example:
ethtool -L eth0 tx 4
echo 100 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
echo 200 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
echo 50 > /sys/class/net/eth0/queues/tx-2/tx_maxrate
echo 30 > /sys/class/net/eth0/queues/tx-3/tx_maxrate
# disable
echo 0 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Link: https://lore.kernel.org/r/20230327085758.3237155-1-s-vadapalli@ti.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/ti/am65-cpsw-nuss.c')
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 9ddb79776c88..44368ecd994a 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -428,6 +428,8 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common) else am65_cpsw_init_host_port_switch(common); + am65_cpsw_qos_tx_p0_rate_init(common); + for (i = 0; i < common->rx_chns.descs_num; i++) { skb = __netdev_alloc_skb_ip_align(NULL, AM65_CPSW_MAX_PACKET_SIZE, @@ -599,8 +601,12 @@ static int am65_cpsw_nuss_ndo_slave_open(struct net_device *ndev) goto runtime_put; } - for (i = 0; i < common->tx_ch_num; i++) - netdev_tx_reset_queue(netdev_get_tx_queue(ndev, i)); + for (i = 0; i < common->tx_ch_num; i++) { + struct netdev_queue *txq = netdev_get_tx_queue(ndev, i); + + netdev_tx_reset_queue(txq); + txq->tx_maxrate = common->tx_chns[i].rate_mbps; + } ret = am65_cpsw_nuss_common_open(common); if (ret) @@ -1425,6 +1431,7 @@ static const struct net_device_ops am65_cpsw_nuss_netdev_ops = { .ndo_vlan_rx_kill_vid = am65_cpsw_nuss_ndo_slave_kill_vid, .ndo_eth_ioctl = am65_cpsw_nuss_ndo_slave_ioctl, .ndo_setup_tc = am65_cpsw_qos_ndo_setup_tc, + .ndo_set_tx_maxrate = am65_cpsw_qos_ndo_tx_p0_set_maxrate, }; static void am65_cpsw_disable_phy(struct phy *phy) @@ -1616,6 +1623,7 @@ void am65_cpsw_nuss_remove_tx_chns(struct am65_cpsw_common *common) devm_remove_action(dev, am65_cpsw_nuss_free_tx_chns, common); + common->tx_ch_rate_msk = 0; for (i = 0; i < common->tx_ch_num; i++) { struct am65_cpsw_tx_chn *tx_chn = &common->tx_chns[i]; |