From: Madalin Bucur <madalin.bucur@nxp.com>
To: netdev@vger.kernel.org, davem@davemloft.net
Cc: linux-kernel@vger.kernel.org, Madalin Bucur <madalin.bucur@nxp.com>
Subject: [PATCH] dpaa_eth: add ethtool coalesce control
Date: Wed, 7 Nov 2018 15:53:43 +0200 [thread overview]
Message-ID: <1541598823-22533-1-git-send-email-madalin.bucur@nxp.com> (raw)
Allow ethtool control of the DPAA QMan portal interrupt coalescing
settings.
Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
---
drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
index 13d6e2272ece..548a7e8893d8 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -529,6 +529,45 @@ static int dpaa_get_ts_info(struct net_device *net_dev,
return 0;
}
+static int dpaa_get_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *c)
+{
+ struct qman_portal *portal;
+ u32 period;
+ u8 thresh;
+
+ portal = qman_get_affine_portal(smp_processor_id());
+ qman_portal_get_iperiod(portal, &period);
+ qman_dqrr_get_ithresh(portal, &thresh);
+
+ c->rx_coalesce_usecs = period;
+ c->rx_max_coalesced_frames = thresh;
+ c->use_adaptive_rx_coalesce = false;
+
+ return 0;
+}
+
+static int dpaa_set_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *c)
+{
+ const cpumask_t *cpus = qman_affine_cpus();
+ struct qman_portal *portal;
+ u32 period;
+ u8 thresh;
+ int cpu;
+
+ period = c->rx_coalesce_usecs;
+ thresh = c->rx_max_coalesced_frames;
+
+ for_each_cpu(cpu, cpus) {
+ portal = qman_get_affine_portal(cpu);
+ qman_portal_set_iperiod(portal, period);
+ qman_dqrr_set_ithresh(portal, thresh);
+ }
+
+ return 0;
+}
+
const struct ethtool_ops dpaa_ethtool_ops = {
.get_drvinfo = dpaa_get_drvinfo,
.get_msglevel = dpaa_get_msglevel,
@@ -545,4 +584,6 @@ const struct ethtool_ops dpaa_ethtool_ops = {
.get_rxnfc = dpaa_get_rxnfc,
.set_rxnfc = dpaa_set_rxnfc,
.get_ts_info = dpaa_get_ts_info,
+ .get_coalesce = dpaa_get_coalesce,
+ .set_coalesce = dpaa_set_coalesce,
};
--
2.1.0
next reply other threads:[~2018-11-07 13:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-07 13:53 Madalin Bucur [this message]
2018-11-08 6:33 ` David Miller
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