From: Alexandra Winter <wintera@linux.ibm.com>
To: David Miller <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org,
Heiko Carstens <hca@linux.ibm.com>,
Julian Wiedmann <jwi@linux.ibm.com>,
Alexandra Winter <wintera@linux.ibm.com>
Subject: [PATCH net-next 4/5] s390/qeth: fine-tune .ndo_select_queue()
Date: Tue, 7 Dec 2021 10:04:51 +0100 [thread overview]
Message-ID: <20211207090452.1155688-5-wintera@linux.ibm.com> (raw)
In-Reply-To: <20211207090452.1155688-1-wintera@linux.ibm.com>
From: Julian Wiedmann <jwi@linux.ibm.com>
Avoid a conditional branch for L2 devices when selecting the TX queue,
and have shared logic for OSA devices.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 4 ++--
drivers/s390/net/qeth_core_main.c | 15 +++++++++++++--
drivers/s390/net/qeth_l2_main.c | 20 ++++++--------------
drivers/s390/net/qeth_l3_main.c | 13 +------------
4 files changed, 22 insertions(+), 30 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 20dca4c0384a..de25d7ac41da 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -1030,8 +1030,6 @@ static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
data, QETH_PROT_IPV6);
}
-int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
-
extern const struct qeth_discipline qeth_l2_discipline;
extern const struct qeth_discipline qeth_l3_discipline;
extern const struct ethtool_ops qeth_ethtool_ops;
@@ -1099,6 +1097,8 @@ void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
u8 cast_type, struct net_device *sb_dev);
+u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev);
int qeth_open(struct net_device *dev);
int qeth_stop(struct net_device *dev);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 629a7f5c4d71..093ee14e8051 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3769,7 +3769,7 @@ static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
/*
* Note: Function assumes that we have 4 outbound queues.
*/
-int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
+static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
{
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
u8 tos;
@@ -3814,7 +3814,6 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
}
return card->qdio.default_out_queue;
}
-EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
/**
* qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
@@ -7078,6 +7077,18 @@ u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
}
EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
+u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ if (qeth_uses_tx_prio_queueing(card))
+ return qeth_get_priority_queue(card, skb);
+
+ return netdev_pick_tx(dev, skb, sb_dev);
+}
+EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
+
int qeth_open(struct net_device *dev)
{
struct qeth_card *card = dev->ml_priv;
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index d1933c54bfbb..303461d70af3 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -519,19 +519,11 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
return NETDEV_TX_OK;
}
-static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
+static u16 qeth_l2_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
{
- struct qeth_card *card = dev->ml_priv;
-
- if (IS_IQD(card))
- return qeth_iqd_select_queue(dev, skb,
- qeth_get_ether_cast_type(skb),
- sb_dev);
- if (qeth_uses_tx_prio_queueing(card))
- return qeth_get_priority_queue(card, skb);
-
- return netdev_pick_tx(dev, skb, sb_dev);
+ return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb),
+ sb_dev);
}
static void qeth_l2_set_rx_mode(struct net_device *dev)
@@ -1059,7 +1051,7 @@ static const struct net_device_ops qeth_l2_iqd_netdev_ops = {
.ndo_get_stats64 = qeth_get_stats64,
.ndo_start_xmit = qeth_l2_hard_start_xmit,
.ndo_features_check = qeth_features_check,
- .ndo_select_queue = qeth_l2_select_queue,
+ .ndo_select_queue = qeth_l2_iqd_select_queue,
.ndo_validate_addr = qeth_l2_validate_addr,
.ndo_set_rx_mode = qeth_l2_set_rx_mode,
.ndo_eth_ioctl = qeth_do_ioctl,
@@ -1080,7 +1072,7 @@ static const struct net_device_ops qeth_l2_osa_netdev_ops = {
.ndo_get_stats64 = qeth_get_stats64,
.ndo_start_xmit = qeth_l2_hard_start_xmit,
.ndo_features_check = qeth_features_check,
- .ndo_select_queue = qeth_l2_select_queue,
+ .ndo_select_queue = qeth_osa_select_queue,
.ndo_validate_addr = qeth_l2_validate_addr,
.ndo_set_rx_mode = qeth_l2_set_rx_mode,
.ndo_eth_ioctl = qeth_do_ioctl,
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 48a886f7af62..9251ad276ee8 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1822,17 +1822,6 @@ static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
qeth_l3_get_cast_type(skb, proto), sb_dev);
}
-static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
-{
- struct qeth_card *card = dev->ml_priv;
-
- if (qeth_uses_tx_prio_queueing(card))
- return qeth_get_priority_queue(card, skb);
-
- return netdev_pick_tx(dev, skb, sb_dev);
-}
-
static const struct net_device_ops qeth_l3_netdev_ops = {
.ndo_open = qeth_open,
.ndo_stop = qeth_stop,
@@ -1854,7 +1843,7 @@ static const struct net_device_ops qeth_l3_osa_netdev_ops = {
.ndo_get_stats64 = qeth_get_stats64,
.ndo_start_xmit = qeth_l3_hard_start_xmit,
.ndo_features_check = qeth_l3_osa_features_check,
- .ndo_select_queue = qeth_l3_osa_select_queue,
+ .ndo_select_queue = qeth_osa_select_queue,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_rx_mode = qeth_l3_set_rx_mode,
.ndo_eth_ioctl = qeth_do_ioctl,
--
2.32.0
next prev parent reply other threads:[~2021-12-07 9:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 9:04 [PATCH net-next 0/5] s390/net: updates 2021-12-06 Alexandra Winter
2021-12-07 9:04 ` [PATCH net-next 1/5] s390/qeth: simplify qeth_receive_skb() Alexandra Winter
2021-12-07 9:04 ` [PATCH net-next 2/5] s390/qeth: split up L2 netdev_ops Alexandra Winter
2021-12-07 9:04 ` [PATCH net-next 3/5] s390/qeth: don't offer .ndo_bridge_* ops for OSA devices Alexandra Winter
2021-12-07 9:04 ` Alexandra Winter [this message]
2021-12-07 9:04 ` [PATCH net-next 5/5] s390/qeth: remove check for packing mode in qeth_check_outbound_queue() Alexandra Winter
2021-12-08 6:10 ` [PATCH net-next 0/5] s390/net: updates 2021-12-06 patchwork-bot+netdevbpf
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