From: Stephen Hemminger <stephen@networkplumber.org>
Date: Tue, 12 Dec 2017 00:01:17 +0000 (-0800)
Subject: uapi: add access to snd_cwnd and other sock_ops
X-Git-Tag: v4.16.0~111
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7f5fd3698cdb82fbf840aa33aaa02f274f116f1;p=thirdparty%2Fiproute2.git

uapi: add access to snd_cwnd and other sock_ops

From upstream kernel commit f19397a5c65665d66e3866b42056f1f58b7a366b
    bpf: Add access to snd_cwnd and others in sock_ops

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 81f9145fc..0defef030 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -941,6 +941,12 @@ struct bpf_sock_ops {
 	__u32 local_ip6[4];	/* Stored in network byte order */
 	__u32 remote_port;	/* Stored in network byte order */
 	__u32 local_port;	/* stored in host byte order */
+	__u32 is_fullsock;	/* Some TCP fields are only valid if
+				 * there is a full socket. If not, the
+				 * fields read as zero.
+				 */
+	__u32 snd_cwnd;
+	__u32 srtt_us;		/* Averaged RTT << 3 in usecs */
 };
 
 /* List of known BPF sock_ops operators.