ebpf: experiments.danderson/ebpf

1 files changed, 74 insertions, 0 deletions

diff --git a/ebpf/include/linux/errqueue.h b/ebpf/include/linux/errqueue.h
new file mode 100644
index 000000000..d6f48a2e5
--- /dev/null
+++ b/ebpf/include/linux/errqueue.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_ERRQUEUE_H
+#define _LINUX_ERRQUEUE_H
+
+#include <linux/types.h>
+#include <linux/time_types.h>
+
+/* RFC 4884: return offset to extension struct + validation */
+struct sock_ee_data_rfc4884 {
+	__u16	len;
+	__u8	flags;
+	__u8	reserved;
+};
+
+struct sock_extended_err {
+	__u32	ee_errno;	
+	__u8	ee_origin;
+	__u8	ee_type;
+	__u8	ee_code;
+	__u8	ee_pad;
+	__u32   ee_info;
+	union	{
+		__u32   ee_data;
+		struct sock_ee_data_rfc4884 ee_rfc4884;
+	};
+};
+
+#define SO_EE_ORIGIN_NONE	0
+#define SO_EE_ORIGIN_LOCAL	1
+#define SO_EE_ORIGIN_ICMP	2
+#define SO_EE_ORIGIN_ICMP6	3
+#define SO_EE_ORIGIN_TXSTATUS	4
+#define SO_EE_ORIGIN_ZEROCOPY	5
+#define SO_EE_ORIGIN_TXTIME	6
+#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
+
+#define SO_EE_OFFENDER(ee)	((struct sockaddr*)((ee)+1))
+
+#define SO_EE_CODE_ZEROCOPY_COPIED	1
+
+#define SO_EE_CODE_TXTIME_INVALID_PARAM	1
+#define SO_EE_CODE_TXTIME_MISSED	2
+
+#define SO_EE_RFC4884_FLAG_INVALID	1
+
+/**
+ *	struct scm_timestamping - timestamps exposed through cmsg
+ *
+ *	The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
+ *	communicate network timestamps by passing this struct in a cmsg with
+ *	recvmsg(). See Documentation/networking/timestamping.rst for details.
+ *	User space sees a timespec definition that matches either
+ *	__kernel_timespec or __kernel_old_timespec, in the kernel we
+ *	require two structure definitions to provide both.
+ */
+struct scm_timestamping {
+	struct timespec ts[3];
+};
+
+struct scm_timestamping64 {
+	struct __kernel_timespec ts[3];
+};
+
+/* The type of scm_timestamping, passed in sock_extended_err ee_info.
+ * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
+ * is zero, then this is a hardware timestamp and recorded in ts[2].
+ */
+enum {
+	SCM_TSTAMP_SND,		/* driver passed skb to NIC, or HW */
+	SCM_TSTAMP_SCHED,	/* data entered the packet scheduler */
+	SCM_TSTAMP_ACK,		/* data acknowledged by peer */
+};
+
+#endif /* _LINUX_ERRQUEUE_H */