1 files changed, 112 insertions, 0 deletions
diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
new file mode 100644
index 00000000..5aadebbc
--- /dev/null
+++ b/kernel/linux/kni/compat.h
@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Minimal wrappers to allow compiling kni on older kernels.
+ */
+
+#include <linux/version.h>
+
+#ifndef RHEL_RELEASE_VERSION
+#define RHEL_RELEASE_VERSION(a, b) (((a) << 8) + (b))
+#endif
+
+/* SuSE version macro is the same as Linux kernel version */
+#ifndef SLE_VERSION
+#define SLE_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
+#endif
+#ifdef CONFIG_SUSE_KERNEL
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 57))
+/* SLES12SP3 is at least 4.4.57+ based */
+#define SLE_VERSION_CODE SLE_VERSION(12, 3, 0)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 12, 28))
+/* SLES12 is at least 3.12.28+ based */
+#define SLE_VERSION_CODE SLE_VERSION(12, 0, 0)
+#elif ((LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 61)) && \
+	(LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)))
+/* SLES11 SP3 is at least 3.0.61+ based */
+#define SLE_VERSION_CODE SLE_VERSION(11, 3, 0)
+#elif (LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 32))
+/* SLES11 SP1 is 2.6.32 based */
+#define SLE_VERSION_CODE SLE_VERSION(11, 1, 0)
+#elif (LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 27))
+/* SLES11 GA is 2.6.27 based */
+#define SLE_VERSION_CODE SLE_VERSION(11, 0, 0)
+#endif /* LINUX_VERSION_CODE == KERNEL_VERSION(x,y,z) */
+#endif /* CONFIG_SUSE_KERNEL */
+#ifndef SLE_VERSION_CODE
+#define SLE_VERSION_CODE 0
+#endif /* SLE_VERSION_CODE */
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39) && \
+	(!(defined(RHEL_RELEASE_CODE) && \
+	   RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(6, 4)))
+
+#define kstrtoul strict_strtoul
+
+#endif /* < 2.6.39 */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
+#define HAVE_SIMPLIFIED_PERNET_OPERATIONS
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
+#define sk_sleep(s) ((s)->sk_sleep)
+#else
+#define HAVE_SOCKET_WQ
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0)
+#define HAVE_STATIC_SOCK_MAP_FD
+#else
+#define kni_sock_map_fd(s) sock_map_fd(s, 0)
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
+#define HAVE_CHANGE_CARRIER_CB
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)
+#define ether_addr_copy(dst, src) memcpy(dst, src, ETH_ALEN)
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
+#define HAVE_IOV_ITER_MSGHDR
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
+#define HAVE_KIOCB_MSG_PARAM
+#define HAVE_REBUILD_HEADER
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
+#define HAVE_SK_ALLOC_KERN_PARAM
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) || \
+	(defined(RHEL_RELEASE_CODE) && \
+	 RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 4)) || \
+	(SLE_VERSION_CODE && SLE_VERSION_CODE == SLE_VERSION(12, 3, 0))
+#define HAVE_TRANS_START_HELPER
+#endif
+
+/*
+ * KNI uses NET_NAME_UNKNOWN macro to select correct version of alloc_netdev()
+ * For old kernels just backported the commit that enables the macro
+ * (685343fc3ba6) but still uses old API, it is required to undefine macro to
+ * select correct version of API, this is safe since KNI doesn't use the value.
+ * This fix is specific to RedHat/CentOS kernels.
+ */
+#if (defined(RHEL_RELEASE_CODE) && \
+	(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(6, 8)) && \
+	(LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 34)))
+#undef NET_NAME_UNKNOWN
+#endif
+
+#if (defined(RHEL_RELEASE_CODE) && \
+	(RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 5)))
+#define ndo_change_mtu ndo_change_mtu_rh74
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+#define HAVE_SIGNAL_FUNCTIONS_OWN_HEADER
+#endif