openwrt/package/kernel/qca-nss-dp/patches/0008-switchdev-remove-the-transaction-structure.patch
Robert Marko 2558e7b443 kernel: add Qualcomm NSS dataplane ethernet driver
Qualcomm NSS-DP is as its name says Qualcomms ethernet driver for the NSS
subsystem (Networking subsystem) built-into various Qualcomm SoCs.

It has 2 modes of operation:
* Without NSS FW and rest of code required for offloading

This is the one that we will use as the amount of kernel patching required
for NSS offloading and the fact that its not upstreamable at all makes it
unusable for us.

Driver in this mode is rather basic, it currently only offers NAPI GRO
(Added by us as part of the fixup) and basically relies on the powerfull
CPU to get good throughput.

* With NSS FW and rest of code required for offloading

In this mode, driver just registers the interfaces and hooks them into
NSS-ECM to allow offloading.
This mode is not viable for use in OpenWrt due to reasons already described
above.

This driver is required for ipq807x to have wired networking until a better
one is available, so lets add the fixed-up version for 5.15 for now.

Signed-off-by: Robert Marko <robimarko@gmail.com>
2023-01-16 12:42:23 +01:00

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Diff

From c9afdcdd2642485a6476906be9da2e811090fc7a Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Fri, 18 Mar 2022 18:06:03 +0100
Subject: [PATCH] switchdev: remove the transaction structure
Since 5.12 there is no transaction structure anymore, so drop it for
5.12 and newer.
Signed-off-by: Robert Marko <robimarko@gmail.com>
---
nss_dp_switchdev.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/nss_dp_switchdev.c
+++ b/nss_dp_switchdev.c
@@ -279,13 +279,19 @@ void nss_dp_switchdev_setup(struct net_d
* Sets attributes
*/
static int nss_dp_port_attr_set(struct net_device *dev,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 12, 0))
const struct switchdev_attr *attr,
struct switchdev_trans *trans)
+#else
+ const struct switchdev_attr *attr)
+#endif
{
struct nss_dp_dev *dp_priv = (struct nss_dp_dev *)netdev_priv(dev);
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 12, 0))
if (switchdev_trans_ph_prepare(trans))
return 0;
+#endif
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
@@ -309,8 +315,12 @@ static int nss_dp_switchdev_port_attr_se
{
int err;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 12, 0))
err = nss_dp_port_attr_set(netdev, port_attr_info->attr,
port_attr_info->trans);
+#else
+ err = nss_dp_port_attr_set(netdev, port_attr_info->attr);
+#endif
port_attr_info->handled = true;
return notifier_from_errno(err);