From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ursula Braun Subject: [PATCH net-next v3 0/4] fixes from 2018-04-17 - v3 Date: Thu, 26 Apr 2018 17:18:19 +0200 Message-ID: <20180426151823.78967-1-ubraun@linux.ibm.com> Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.vnet.ibm.com, ubraun@linux.vnet.ibm.com To: davem@davemloft.net Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:49538 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756478AbeDZPSy (ORCPT ); Thu, 26 Apr 2018 11:18:54 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w3QFIiEP057284 for ; Thu, 26 Apr 2018 11:18:53 -0400 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0a-001b2d01.pphosted.com with ESMTP id 2hkgdt31ss-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 26 Apr 2018 11:18:52 -0400 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 26 Apr 2018 16:18:34 +0100 Sender: netdev-owner@vger.kernel.org List-ID: From: Ursula Braun Dave, in the mean time we challenged the benefit of these CLC handshake optimizations for the sockopts TCP_NODELAY and TCP_CORK. We decided to give up on them for now, since SMC still works properly without. There is now version 3 of the patch series with patches 2-4 implementing sockopts that require special handling in SMC. Version 3 changes * no deferring of setsockopts TCP_NODELAY and TCP_CORK anymore * allow fallback for some sockopts eliminating SMC usage * when setting TCP_NODELAY always enforce data transmission (not only together with corked data) Version 2 changes of Patch 2/4 (and 3/4): * return error -EOPNOTSUPP for TCP_FASTOPEN sockopts * fix a kernel_setsockopt() usage bug by switching parameter variable from type "u8" to "int" * add return code validation when calling kernel_setsockopt() * propagate a setsockopt error on the internal CLC socket to the SMC socket. Regards, Ursula Karsten Graul (1): net/smc: fix structure size Ursula Braun (3): net/smc: handle sockopts forcing fallback net/smc: handle sockopt TCP_CORK net/smc: handle sockopt TCP_DEFER_ACCEPT net/smc/af_smc.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++--- net/smc/smc.h | 4 +++ net/smc/smc_cdc.c | 2 +- net/smc/smc_cdc.h | 2 +- net/smc/smc_rx.c | 2 +- net/smc/smc_rx.h | 1 + net/smc/smc_tx.c | 24 ++++++++++++-- 7 files changed, 122 insertions(+), 11 deletions(-) -- 2.13.5