ethtool: drop rss-input-xfrm compatibility patch

The rss-input-xfrm workaround for Linux 6.6 is no longer needed with
current kernel versions. Remove the patch and the associated
--enable-rss-input-xfrm configure flag.

Link: https://github.com/openwrt/openwrt/pull/22841
Signed-off-by: Nick Hainke <[email protected]>

package/network/utils/ethtool/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ethtool
 PKG_VERSION:=6.19
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_MAINTAINER:=Felix Fietkau <[email protected]>
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
@@ -61,9 +61,6 @@ else
 CONFIGURE_ARGS += --disable-netlink --disable-pretty-dump
 endif
 
-# enable support for input_xfrm with kernels newer than 6.6
-CONFIGURE_ARGS += --enable-rss-input-xfrm
-
 define Package/ethtool/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ethtool $(1)/usr/sbin

package/network/utils/ethtool/patches/0001-ethtool-make-building-for-RSS-input-xfrm-optional.patch

@@ -1,72 +0,0 @@
-From c88eb6f4e9b2d8f71f3391db2bf0ec82ecccae81 Mon Sep 17 00:00:00 2001
-From: Daniel Golle <[email protected]>
-Date: Wed, 12 Feb 2025 04:12:42 +0000
-Subject: [PATCH] ethtool: make building for RSS input xfrm optional
-
-Unfortunately there is no way to detect at runtime if the kernel the
-support for RSS input transformation, and the default value
-RXH_XFRM_NO_CHANGE (0xff) used by newer ethtool results in breakage
-with older kernels.
-As a stop-gap solution simply don't compile with support for input
-xfrm by default.
-
-Signed-off-by: Daniel Golle <[email protected]>
----
- configure.ac | 10 ++++++++++
- ethtool.c    | 10 ++++++++++
- 2 files changed, 20 insertions(+)
-
---- a/configure.ac
-+++ b/configure.ac
-@@ -45,6 +45,16 @@ if test x$enable_pretty_dump = xyes; the
- fi
- AM_CONDITIONAL([ETHTOOL_ENABLE_PRETTY_DUMP], [test x$enable_pretty_dump = xyes])
- 
-+AC_ARG_ENABLE(rss-input-xfrm,
-+	      [  --enable-rss-input-xfrm  build with support for RSS input transformation (disabled by default)],
-+	      ,
-+	      enable_rss_input_xfrm=no)
-+if test x$enable_rss_input_xfrm = xyes; then
-+    AC_DEFINE(ETHTOOL_ENABLE_RSS_INPUT_XFRM, 1,
-+	      [Define this to enable building with support for RSS input transformation.])
-+fi
-+AM_CONDITIONAL([ETHTOOL_ENABLE_RSS_INPUT_XFRM], [test x$enable_rss_input_xfrm = xyes])
-+
- AC_ARG_WITH([bash-completion-dir],
- 	    AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
- 	                   [Install the bash-completion script in this directory. @<:@default=yes@:>@]),
---- a/ethtool.c
-+++ b/ethtool.c
-@@ -4176,7 +4176,7 @@ static int do_grxfh(struct cmd_context *
- 	}
- 	if (rss->hfunc)
- 		printf("    Unknown hash function: 0x%x\n", rss->hfunc);
--
-+#ifdef ETHTOOL_ENABLE_RSS_INPUT_XFRM
- 	printf("RSS input transformation:\n");
- 	printf("    symmetric-xor: %s\n",
- 	       (rss->input_xfrm & RXH_XFRM_SYM_XOR) ? "on" : "off");
-@@ -4188,6 +4188,7 @@ static int do_grxfh(struct cmd_context *
- 	if (rss->input_xfrm)
- 		printf("    Unknown bits in RSS input transformation: 0x%x\n",
- 		       rss->input_xfrm);
-+#endif
- 
- out:
- 	free(hfuncs);
-@@ -4509,7 +4510,15 @@ static int do_srxfh(struct cmd_context *
- 	rss->cmd = ETHTOOL_SRSSH;
- 	rss->rss_context = rss_context;
- 	rss->hfunc = req_hfunc;
-+#ifdef ETHTOOL_ENABLE_RSS_INPUT_XFRM
- 	rss->input_xfrm = req_input_xfrm;
-+#else
-+	if (req_input_xfrm != 0xff) {
-+		perror("Compiled for kernel without support for input transformation");
-+		err = 1;
-+		goto free;
-+	}
-+#endif
- 	if (delete) {
- 		rss->indir_size = rss->key_size = 0;
- 	} else {