[PATCH net-next v2 14/14] sfc: implement ethtool get/set RX ring size for EF100 reps
From: <hidden>
Date: 2022-07-27 18:52:00
Subsystem:
networking drivers, sfc network driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Edward Cree, Linus Torvalds
From: Edward Cree <ecree.xilinx@gmail.com> It's not truly a ring, but the maximum length of the list of queued RX SKBs is analogous to an RX ring size, so use that API to configure it. Signed-off-by: Edward Cree <ecree.xilinx@gmail.com> --- drivers/net/ethernet/sfc/ef100_rep.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/drivers/net/ethernet/sfc/ef100_rep.c b/drivers/net/ethernet/sfc/ef100_rep.c
index 58365a4c7c6a..efbe7d482d7b 100644
--- a/drivers/net/ethernet/sfc/ef100_rep.c
+++ b/drivers/net/ethernet/sfc/ef100_rep.c@@ -178,10 +178,37 @@ static void efx_ef100_rep_ethtool_set_msglevel(struct net_device *net_dev, efv->msg_enable = msg_enable; } +static void efx_ef100_rep_ethtool_get_ringparam(struct net_device *net_dev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kring, + struct netlink_ext_ack *ext_ack) +{ + struct efx_rep *efv = netdev_priv(net_dev); + + ring->rx_max_pending = U32_MAX; + ring->rx_pending = efv->rx_pring_size; +} + +static int efx_ef100_rep_ethtool_set_ringparam(struct net_device *net_dev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kring, + struct netlink_ext_ack *ext_ack) +{ + struct efx_rep *efv = netdev_priv(net_dev); + + if (ring->rx_mini_pending || ring->rx_jumbo_pending || ring->tx_pending) + return -EINVAL; + + efv->rx_pring_size = ring->rx_pending; + return 0; +} + static const struct ethtool_ops efx_ef100_rep_ethtool_ops = { .get_drvinfo = efx_ef100_rep_get_drvinfo, .get_msglevel = efx_ef100_rep_ethtool_get_msglevel, .set_msglevel = efx_ef100_rep_ethtool_set_msglevel, + .get_ringparam = efx_ef100_rep_ethtool_get_ringparam, + .set_ringparam = efx_ef100_rep_ethtool_set_ringparam, }; static struct efx_rep *efx_ef100_rep_create_netdev(struct efx_nic *efx,