Add build system scaffolding and libc headers

1 files changed, 77 insertions, 0 deletions

diff --git a/include/arch/x86_64/linux/tcp_metrics.h b/include/arch/x86_64/linux/tcp_metrics.h
new file mode 100644
index 00000000..aa32dbdd
--- /dev/null
+++ b/include/arch/x86_64/linux/tcp_metrics.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* tcp_metrics.h - TCP Metrics Interface */
+
+#ifndef _LINUX_TCP_METRICS_H
+#define _LINUX_TCP_METRICS_H
+
+#include <linux/types.h>
+
+/* NETLINK_GENERIC related info
+ */
+#define TCP_METRICS_GENL_NAME	 "tcp_metrics"
+#define TCP_METRICS_GENL_VERSION 0x1
+
+enum tcp_metric_index {
+	TCP_METRIC_RTT,	   /* in ms units */
+	TCP_METRIC_RTTVAR, /* in ms units */
+	TCP_METRIC_SSTHRESH,
+	TCP_METRIC_CWND,
+	TCP_METRIC_REORDERING,
+
+	TCP_METRIC_RTT_US,    /* in usec units */
+	TCP_METRIC_RTTVAR_US, /* in usec units */
+
+	/* Always last.  */
+	__TCP_METRIC_MAX,
+};
+
+#define TCP_METRIC_MAX (__TCP_METRIC_MAX - 1)
+
+/* Re-define enum tcp_metric_index, again, using the values carried
+ * as netlink attribute types.
+ */
+enum {
+	TCP_METRICS_A_METRICS_RTT = 1,
+	TCP_METRICS_A_METRICS_RTTVAR,
+	TCP_METRICS_A_METRICS_SSTHRESH,
+	TCP_METRICS_A_METRICS_CWND,
+	TCP_METRICS_A_METRICS_REODERING,
+	TCP_METRICS_A_METRICS_RTT_US,
+	TCP_METRICS_A_METRICS_RTTVAR_US,
+
+	__TCP_METRICS_A_METRICS_MAX
+};
+#define TCP_METRICS_A_METRICS_MAX (__TCP_METRICS_A_METRICS_MAX - 1)
+
+enum {
+	TCP_METRICS_ATTR_UNSPEC,
+	TCP_METRICS_ATTR_ADDR_IPV4,	    /* u32 */
+	TCP_METRICS_ATTR_ADDR_IPV6,	    /* binary */
+	TCP_METRICS_ATTR_AGE,		    /* msecs */
+	TCP_METRICS_ATTR_TW_TSVAL,	    /* u32, raw, rcv tsval */
+	TCP_METRICS_ATTR_TW_TS_STAMP,	    /* s32, sec age */
+	TCP_METRICS_ATTR_VALS,		    /* nested +1, u32 */
+	TCP_METRICS_ATTR_FOPEN_MSS,	    /* u16 */
+	TCP_METRICS_ATTR_FOPEN_SYN_DROPS,   /* u16, count of drops */
+	TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */
+	TCP_METRICS_ATTR_FOPEN_COOKIE,	    /* binary */
+	TCP_METRICS_ATTR_SADDR_IPV4,	    /* u32 */
+	TCP_METRICS_ATTR_SADDR_IPV6,	    /* binary */
+	TCP_METRICS_ATTR_PAD,
+
+	__TCP_METRICS_ATTR_MAX,
+};
+
+#define TCP_METRICS_ATTR_MAX (__TCP_METRICS_ATTR_MAX - 1)
+
+enum {
+	TCP_METRICS_CMD_UNSPEC,
+	TCP_METRICS_CMD_GET,
+	TCP_METRICS_CMD_DEL,
+
+	__TCP_METRICS_CMD_MAX,
+};
+
+#define TCP_METRICS_CMD_MAX (__TCP_METRICS_CMD_MAX - 1)
+
+#endif /* _LINUX_TCP_METRICS_H */