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SubjectRe: [PATCH 12/31] net/tcp: Add tcp_parse_auth_options()
Hi Dmitry,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on e34cfee65ec891a319ce79797dda18083af33a76]

url: https://github.com/intel-lab-lkp/linux/commits/Dmitry-Safonov/net-tcp-Add-TCP-AO-support/20220819-010628
base: e34cfee65ec891a319ce79797dda18083af33a76
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220819/202208190256.Kj0PqjuN-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/c206ead11e78dec4ec0058427d494521f9d53c3f
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Dmitry-Safonov/net-tcp-Add-TCP-AO-support/20220819-010628
git checkout c206ead11e78dec4ec0058427d494521f9d53c3f
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> net/ipv4/tcp_ipv4.c:665:7: warning: "CONFIG_TCP_MD5SIG" is not defined, evaluates to 0 [-Wundef]
665 | #elif CONFIG_TCP_MD5SIG
| ^~~~~~~~~~~~~~~~~


vim +/CONFIG_TCP_MD5SIG +665 net/ipv4/tcp_ipv4.c

649
650 /*
651 * This routine will send an RST to the other tcp.
652 *
653 * Someone asks: why I NEVER use socket parameters (TOS, TTL etc.)
654 * for reset.
655 * Answer: if a packet caused RST, it is not for a socket
656 * existing in our system, if it is matched to a socket,
657 * it is just duplicate segment or bug in other side's TCP.
658 * So that we build reply only basing on parameters
659 * arrived with segment.
660 * Exception: precedence violation. We do not implement it in any case.
661 */
662
663 #ifdef CONFIG_TCP_AO
664 #define OPTION_BYTES MAX_TCP_OPTION_SPACE
> 665 #elif CONFIG_TCP_MD5SIG
666 #define OPTION_BYTES TCPOLEN_MD5SIG_ALIGNED
667 #else
668 #define OPTION_BYTES sizeof(__be32)
669 #endif
670

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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