WARNING: Unknown commit id '856873e362b0', maybe rebased or not pulled?
#17: 
Fixes: 856873e362b0 ("tcp_cubic: fix to use emulated Reno cwnd one RTT in the future")

WARNING: line length of 84 exceeds 80 columns
#36: FILE: net/ipv4/tcp_cubic.c:319:
+		u32 tcp_cwnd_next_rtt = ca->tcp_cwnd + (ca->ack_cnt + cwnd) / delta;

WARNING: line length of 81 exceeds 80 columns
#38: FILE: net/ipv4/tcp_cubic.c:321:
+		if (tcp_cwnd_next_rtt > cwnd) {  /* if bic is slower than Reno */

total: 0 errors, 3 warnings, 0 checks, 13 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 6d58657ed5ca ("tcp_cubic: fix to use emulated Reno cwnd one RTT in the future") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 3 warnings, 0 checks, 13 lines checked