Merge branch 'bpf: add mrtt and srtt as ctx->args for BPF_SOCK_OPS_RTT_CB'

Philo Lu says:

====================
These provides more information about tcp RTT estimation. The selftest for
BPF_SOCK_OPS_RTT_CB is extended for the added args.

changelogs
-> v1:
- extend rtt selftest for added args (suggested by Stanislav)
====================

Signed-off-by: Martin KaFai Lau <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index e4ae83550fb3..d94a72593ead 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -6947,6 +6947,8 @@ enum {
 					 * socket transition to LISTEN state.
 					 */
 	BPF_SOCK_OPS_RTT_CB,		/* Called on every RTT.
+					 * Arg1: measured RTT input (mrtt)
+					 * Arg2: updated srtt
 					 */
 	BPF_SOCK_OPS_PARSE_HDR_OPT_CB,	/* Parse the header option.
 					 * It will be called to handle