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authorSong, Yoong Siang <yoong.siang.song@intel.com>2020-09-16 09:40:20 +0200
committerDavid S. Miller <davem@davemloft.net>2020-09-17 00:22:52 +0200
commitaa042f60e4961d4bec57e3268624df1f3a6befa4 (patch)
treec0d0bb6a3feab3d44a0ad1901b20b15e04b1bdc5 /drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
parentMerge branch 'mlxsw-Refactor-headroom-management' (diff)
downloadlinux-aa042f60e4961d4bec57e3268624df1f3a6befa4.tar.xz
linux-aa042f60e4961d4bec57e3268624df1f3a6befa4.zip
net: stmmac: Add support to Ethtool get/set ring parameters
This patch add support to --show-ring & --set-ring Ethtool functions: - Adding min, max, power of two check to new ring parameter's value. - Bring down the network interface before changing the value of ring parameters. - Bring up the network interface after changing the value of ring parameters. Signed-off-by: Song, Yoong Siang <yoong.siang.song@intel.com> Signed-off-by: Voon Weifeng <weifeng.voon@intel.com> Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index db681287c273..5cfc942dbabf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -440,6 +440,33 @@ static int stmmac_nway_reset(struct net_device *dev)
return phylink_ethtool_nway_reset(priv->phylink);
}
+static void stmmac_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct stmmac_priv *priv = netdev_priv(netdev);
+
+ ring->rx_max_pending = DMA_MAX_RX_SIZE;
+ ring->tx_max_pending = DMA_MAX_TX_SIZE;
+ ring->rx_pending = priv->dma_rx_size;
+ ring->tx_pending = priv->dma_tx_size;
+}
+
+static int stmmac_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
+ ring->rx_pending < DMA_MIN_RX_SIZE ||
+ ring->rx_pending > DMA_MAX_RX_SIZE ||
+ !is_power_of_2(ring->rx_pending) ||
+ ring->tx_pending < DMA_MIN_TX_SIZE ||
+ ring->tx_pending > DMA_MAX_TX_SIZE ||
+ !is_power_of_2(ring->tx_pending))
+ return -EINVAL;
+
+ return stmmac_reinit_ringparam(netdev, ring->rx_pending,
+ ring->tx_pending);
+}
+
static void
stmmac_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
@@ -947,6 +974,8 @@ static const struct ethtool_ops stmmac_ethtool_ops = {
.get_regs_len = stmmac_ethtool_get_regs_len,
.get_link = ethtool_op_get_link,
.nway_reset = stmmac_nway_reset,
+ .get_ringparam = stmmac_get_ringparam,
+ .set_ringparam = stmmac_set_ringparam,
.get_pauseparam = stmmac_get_pauseparam,
.set_pauseparam = stmmac_set_pauseparam,
.self_test = stmmac_selftest_run,