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authorKabuli Chana <newtownBuild@gmail.com>2021-11-05 08:19:17 -0600
committerHauke Mehrtens <hauke@hauke-m.de>2021-11-20 20:54:26 +0100
commit4580516bfbb05fe5e78416155289bf75a51c4287 (patch)
tree802cd308c042549b2ee17a1ceb287283698e076f /target
parent507911f477cc29531a2fbdf364df42e7e4f3c696 (diff)
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mvebu: backport mvneta basic MQPrio patch
Implement a basic MQPrio support, inserting rules in RX that translate the TC to prio mapping into vlan prio to queues. Signed-off-by: Kabuli Chana <newtownBuild@gmail.com>
Diffstat (limited to 'target')
-rw-r--r--target/linux/mvebu/patches-5.10/701-v5.14-net-ethernet-marvell-mvnetaMQPrio.patch109
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-5.10/701-v5.14-net-ethernet-marvell-mvnetaMQPrio.patch b/target/linux/mvebu/patches-5.10/701-v5.14-net-ethernet-marvell-mvnetaMQPrio.patch
new file mode 100644
index 0000000000..36d4942f8b
--- /dev/null
+++ b/target/linux/mvebu/patches-5.10/701-v5.14-net-ethernet-marvell-mvnetaMQPrio.patch
@@ -0,0 +1,109 @@
+From 4906887a8ae5f1296f8079bcf4565a6092a8e402 Mon Sep 17 00:00:00 2001
+From: Maxime Chevallier <maxime.chevallier@bootlin.com>
+Date: Tue, 16 Feb 2021 10:25:36 +0100
+Subject: net: mvneta: Implement mqprio support
+
+Implement a basic MQPrio support, inserting rules in RX that translate
+the TC to prio mapping into vlan prio to queues.
+
+The TX logic stays the same as when we don't offload the qdisc.
+
+Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/marvell/mvneta.c | 61 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 61 insertions(+)
+
+(limited to 'drivers/net/ethernet/marvell/mvneta.c')
+
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -102,6 +102,8 @@
+ #define MVNETA_TX_NO_DATA_SWAP BIT(5)
+ #define MVNETA_DESC_SWAP BIT(6)
+ #define MVNETA_TX_BRST_SZ_MASK(burst) ((burst) << 22)
++#define MVNETA_VLAN_PRIO_TO_RXQ 0x2440
++#define MVNETA_VLAN_PRIO_RXQ_MAP(prio, rxq) ((rxq) << ((prio) * 3))
+ #define MVNETA_PORT_STATUS 0x2444
+ #define MVNETA_TX_IN_PRGRS BIT(0)
+ #define MVNETA_TX_FIFO_EMPTY BIT(8)
+@@ -490,6 +492,7 @@ struct mvneta_port {
+ u8 mcast_count[256];
+ u16 tx_ring_size;
+ u16 rx_ring_size;
++ u8 prio_tc_map[8];
+
+ phy_interface_t phy_interface;
+ struct device_node *dn;
+@@ -4913,6 +4916,63 @@ static u16 mvneta_select_queue(struct ne
+ }
+ #endif
+
++static void mvneta_clear_rx_prio_map(struct mvneta_port *pp)
++{
++ mvreg_write(pp, MVNETA_VLAN_PRIO_TO_RXQ, 0);
++}
++
++static void mvneta_setup_rx_prio_map(struct mvneta_port *pp)
++{
++ u32 val = 0;
++ int i;
++
++ for (i = 0; i < rxq_number; i++)
++ val |= MVNETA_VLAN_PRIO_RXQ_MAP(i, pp->prio_tc_map[i]);
++
++ mvreg_write(pp, MVNETA_VLAN_PRIO_TO_RXQ, val);
++}
++
++static int mvneta_setup_mqprio(struct net_device *dev,
++ struct tc_mqprio_qopt *qopt)
++{
++ struct mvneta_port *pp = netdev_priv(dev);
++ u8 num_tc;
++ int i;
++
++ qopt->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
++ num_tc = qopt->num_tc;
++
++ if (num_tc > rxq_number)
++ return -EINVAL;
++
++ if (!num_tc) {
++ mvneta_clear_rx_prio_map(pp);
++ netdev_reset_tc(dev);
++ return 0;
++ }
++
++ memcpy(pp->prio_tc_map, qopt->prio_tc_map, sizeof(pp->prio_tc_map));
++
++ mvneta_setup_rx_prio_map(pp);
++
++ netdev_set_num_tc(dev, qopt->num_tc);
++ for (i = 0; i < qopt->num_tc; i++)
++ netdev_set_tc_queue(dev, i, qopt->count[i], qopt->offset[i]);
++
++ return 0;
++}
++
++static int mvneta_setup_tc(struct net_device *dev, enum tc_setup_type type,
++ void *type_data)
++{
++ switch (type) {
++ case TC_SETUP_QDISC_MQPRIO:
++ return mvneta_setup_mqprio(dev, type_data);
++ default:
++ return -EOPNOTSUPP;
++ }
++}
++
+ static const struct net_device_ops mvneta_netdev_ops = {
+ .ndo_open = mvneta_open,
+ .ndo_stop = mvneta_stop,
+@@ -4928,6 +4988,7 @@ static const struct net_device_ops mvnet
+ #endif
+ .ndo_bpf = mvneta_xdp,
+ .ndo_xdp_xmit = mvneta_xdp_xmit,
++ .ndo_setup_tc = mvneta_setup_tc,
+ };
+
+ static const struct ethtool_ops mvneta_eth_tool_ops = {