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Miller" , Hideaki YOSHIFUJI , Jakub Kicinski , Martin KaFai Lau , Kuniyuki Iwashima , Yonghong Song , Alexander Duyck , Florian Westphal , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/4] selftests: nettest: Add --{do,no}-bind-key-ifindex Date: Wed, 13 Oct 2021 09:50:37 +0300 Message-Id: <122a68cd7fd28e9a5580f16f650826437f7397a1.1634107317.git.cdleonard@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These options allow explicit control over the TCP_MD5SIG_FLAG_IFINDEX flag instead of always setting it based on binding to an interface. Do this by converting to getopt_long because nettest has too many single-character flags already and getopt_long is widely used in selftests. Signed-off-by: Leonard Crestez --- tools/testing/selftests/net/nettest.c | 28 +++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/nettest.c b/tools/testing/selftests/net/nettest.c index bd6288302094..acf5cd153eaf 100644 --- a/tools/testing/selftests/net/nettest.c +++ b/tools/testing/selftests/net/nettest.c @@ -26,10 +26,11 @@ #include #include #include #include #include +#include #include #include #include @@ -99,10 +100,12 @@ struct sock_args { union { struct sockaddr_in v4; struct sockaddr_in6 v6; } md5_prefix; unsigned int prefix_len; + /* 0: default, -1: force off, +1: force on */ + int bind_key_ifindex; /* expected addresses and device index for connection */ const char *expected_dev; const char *expected_server_dev; int expected_ifindex; @@ -269,15 +272,18 @@ static int tcp_md5sig(int sd, void *addr, socklen_t alen, struct sock_args *args md5sig.tcpm_prefixlen = args->prefix_len; addr = &args->md5_prefix; } memcpy(&md5sig.tcpm_addr, addr, alen); - if (args->ifindex) { + if ((args->ifindex && args->bind_key_ifindex >= 0) || args->bind_key_ifindex >= 1) { opt = TCP_MD5SIG_EXT; md5sig.tcpm_flags |= TCP_MD5SIG_FLAG_IFINDEX; md5sig.tcpm_ifindex = args->ifindex; + log_msg("TCP_MD5SIG_FLAG_IFINDEX set tcpm_ifindex=%d\n", md5sig.tcpm_ifindex); + } else { + log_msg("TCP_MD5SIG_FLAG_IFINDEX off\n", md5sig.tcpm_ifindex); } rc = setsockopt(sd, IPPROTO_TCP, opt, &md5sig, sizeof(md5sig)); if (rc < 0) { /* ENOENT is harmless. Returned when a password is cleared */ @@ -1820,10 +1826,18 @@ static int ipc_parent(int cpid, int fd, struct sock_args *args) wait(&status); return client_status; } #define GETOPT_STR "sr:l:c:p:t:g:P:DRn:M:X:m:d:I:BN:O:SCi6xL:0:1:2:3:Fbq" +#define OPT_DO_BIND_KEY_IFINDEX 1001 +#define OPT_NO_BIND_KEY_IFINDEX 1002 + +static struct option long_opts[] = { + {"do-bind-key-ifindex", 0, 0, OPT_DO_BIND_KEY_IFINDEX}, + {"no-bind-key-ifindex", 0, 0, OPT_NO_BIND_KEY_IFINDEX}, + {0, 0, 0, 0} +}; static void print_usage(char *prog) { printf( "usage: %s OPTS\n" @@ -1856,10 +1870,14 @@ static void print_usage(char *prog) " -n num number of times to send message\n" "\n" " -M password use MD5 sum protection\n" " -X password MD5 password for client mode\n" " -m prefix/len prefix and length to use for MD5 key\n" + " --no-bind-key-ifindex: Force TCP_MD5SIG_FLAG_IFINDEX off\n" + " --do-bind-key-ifindex: Force TCP_MD5SIG_FLAG_IFINDEX on\n" + " (default: only if -I is passed)\n" + "\n" " -g grp multicast group (e.g., 239.1.1.1)\n" " -i interactive mode (default is echo and terminate)\n" "\n" " -0 addr Expected local address\n" " -1 addr Expected remote address\n" @@ -1891,11 +1909,11 @@ int main(int argc, char *argv[]) /* * process input args */ - while ((rc = getopt(argc, argv, GETOPT_STR)) != -1) { + while ((rc = getopt_long(argc, argv, GETOPT_STR, long_opts, NULL)) != -1) { switch (rc) { case 'B': both_mode = 1; break; case 's': @@ -1964,10 +1982,16 @@ int main(int argc, char *argv[]) msg = random_msg(atoi(optarg)); break; case 'M': args.password = optarg; break; + case OPT_DO_BIND_KEY_IFINDEX: + args.bind_key_ifindex = 1; + break; + case OPT_NO_BIND_KEY_IFINDEX: + args.bind_key_ifindex = -1; + break; case 'X': args.client_pw = optarg; break; case 'm': args.md5_prefix_str = optarg; -- 2.25.1