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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>
47 lines
1.4 KiB
Diff
47 lines
1.4 KiB
Diff
From cadeb62a42296563141d6954eec58e34ef86778d Mon Sep 17 00:00:00 2001
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From: Robert Marko <robimarko@gmail.com>
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Date: Fri, 13 Aug 2021 20:12:08 +0200
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Subject: [PATCH] NSS-DP: fix of_get_mac_address()
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Recently OpenWrt backported the updated of_get_mac_address()
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function which returns and error code instead.
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So, patch the SSDK to use it and fix the compilation error.
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Signed-off-by: Robert Marko <robimarko@gmail.com>
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---
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nss_dp_main.c | 13 ++++---------
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1 file changed, 4 insertions(+), 9 deletions(-)
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--- a/nss_dp_main.c
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+++ b/nss_dp_main.c
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@@ -555,9 +555,10 @@ static int32_t nss_dp_of_get_pdata(struc
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struct net_device *netdev,
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struct nss_gmac_hal_platform_data *hal_pdata)
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{
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- uint8_t *maddr;
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+ u8 maddr[ETH_ALEN];
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struct nss_dp_dev *dp_priv;
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struct resource memres_devtree = {0};
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+ int ret;
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dp_priv = netdev_priv(netdev);
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@@ -600,14 +601,8 @@ static int32_t nss_dp_of_get_pdata(struc
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of_property_read_u32(np, "qcom,forced-speed", &dp_priv->forced_speed);
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of_property_read_u32(np, "qcom,forced-duplex", &dp_priv->forced_duplex);
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- maddr = (uint8_t *)of_get_mac_address(np);
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-#if (LINUX_VERSION_CODE > KERNEL_VERSION(5, 4, 0))
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- if (IS_ERR((void *)maddr)) {
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- maddr = NULL;
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- }
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-#endif
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-
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- if (maddr && is_valid_ether_addr(maddr)) {
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+ ret = of_get_mac_address(np, maddr);
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+ if (!ret && is_valid_ether_addr(maddr)) {
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ether_addr_copy(netdev->dev_addr, maddr);
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} else {
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random_ether_addr(netdev->dev_addr);
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