From: Leonard Crestez <cdleonard@gmail.com>
To: Dmitry Safonov <0x7f454c46@gmail.com>,
David Ahern <dsahern@kernel.org>, Shuah Khan <shuah@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>,
"David S. Miller" <davem@davemloft.net>,
Herbert Xu <herbert@gondor.apana.org.au>,
Kuniyuki Iwashima <kuniyu@amazon.co.jp>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Jakub Kicinski <kuba@kernel.org>,
Yuchung Cheng <ycheng@google.com>,
Francesco Ruggeri <fruggeri@arista.com>,
Mat Martineau <mathew.j.martineau@linux.intel.com>,
Christoph Paasch <cpaasch@apple.com>,
Ivan Delalande <colona@arista.com>,
Priyaranjan Jha <priyarjha@google.com>,
Menglong Dong <dong.menglong@zte.com.cn>,
netdev@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFCv3 08/15] tcp: authopt: Add snmp counters
Date: Wed, 25 Aug 2021 00:34:41 +0300 [thread overview]
Message-ID: <46371eff47ae9917c76f2719d984ba2cd23f9a00.1629840814.git.cdleonard@gmail.com> (raw)
In-Reply-To: <cover.1629840814.git.cdleonard@gmail.com>
Add LINUX_MIB_TCPAUTHOPTFAILURE and increment on failure. This can be
use by userspace to count the number of failed authentications.
All types of authentication failures are reported under a single
counter.
Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
---
include/uapi/linux/snmp.h | 1 +
net/ipv4/proc.c | 1 +
net/ipv4/tcp_authopt.c | 3 +++
3 files changed, 5 insertions(+)
diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h
index 904909d020e2..1d96030889a1 100644
--- a/include/uapi/linux/snmp.h
+++ b/include/uapi/linux/snmp.h
@@ -290,10 +290,11 @@ enum
LINUX_MIB_TCPDUPLICATEDATAREHASH, /* TCPDuplicateDataRehash */
LINUX_MIB_TCPDSACKRECVSEGS, /* TCPDSACKRecvSegs */
LINUX_MIB_TCPDSACKIGNOREDDUBIOUS, /* TCPDSACKIgnoredDubious */
LINUX_MIB_TCPMIGRATEREQSUCCESS, /* TCPMigrateReqSuccess */
LINUX_MIB_TCPMIGRATEREQFAILURE, /* TCPMigrateReqFailure */
+ LINUX_MIB_TCPAUTHOPTFAILURE, /* TCPAuthOptFailure */
__LINUX_MIB_MAX
};
/* linux Xfrm mib definitions */
enum
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index b0d3a09dc84e..61dd06f8389c 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -295,10 +295,11 @@ static const struct snmp_mib snmp4_net_list[] = {
SNMP_MIB_ITEM("TcpDuplicateDataRehash", LINUX_MIB_TCPDUPLICATEDATAREHASH),
SNMP_MIB_ITEM("TCPDSACKRecvSegs", LINUX_MIB_TCPDSACKRECVSEGS),
SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS),
SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS),
SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE),
+ SNMP_MIB_ITEM("TCPAuthOptFailure", LINUX_MIB_TCPAUTHOPTFAILURE),
SNMP_MIB_SENTINEL
};
static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
unsigned short *type, int count)
diff --git a/net/ipv4/tcp_authopt.c b/net/ipv4/tcp_authopt.c
index af777244d098..08ca77f01c46 100644
--- a/net/ipv4/tcp_authopt.c
+++ b/net/ipv4/tcp_authopt.c
@@ -1071,10 +1071,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp
/* nothing found or expected */
if (!opt && !key)
return 0;
if (!opt && key) {
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE);
net_info_ratelimited("TCP Authentication Missing\n");
return -EINVAL;
}
if (opt && !key) {
/* RFC5925 Section 7.3:
@@ -1082,10 +1083,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp
* of segments with TCP-AO but that do not match an MKT. The initial
* default of this configuration SHOULD be to silently accept such
* connections.
*/
if (info->flags & TCP_AUTHOPT_FLAG_REJECT_UNEXPECTED) {
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE);
net_info_ratelimited("TCP Authentication Unexpected: Rejected\n");
return -EINVAL;
} else {
net_info_ratelimited("TCP Authentication Unexpected: Accepted\n");
return 0;
@@ -1099,10 +1101,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp
err = __tcp_authopt_calc_mac(sk, skb, key, true, macbuf);
if (err)
return err;
if (memcmp(macbuf, opt->mac, key->maclen)) {
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE);
net_info_ratelimited("TCP Authentication Failed\n");
return -EINVAL;
}
return 0;
--
2.25.1
next prev parent reply other threads:[~2021-08-24 21:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 21:34 [RFCv3 00/15] tcp: Initial support for RFC5925 auth option Leonard Crestez
2021-08-24 21:34 ` [RFCv3 01/15] tcp: authopt: Initial support and key management Leonard Crestez
2021-08-31 19:04 ` Dmitry Safonov
2021-09-03 14:26 ` Leonard Crestez
2021-08-24 21:34 ` [RFCv3 02/15] docs: Add user documentation for tcp_authopt Leonard Crestez
2021-08-24 21:34 ` [RFCv3 03/15] selftests: Initial tcp_authopt test module Leonard Crestez
2021-08-24 21:34 ` [RFCv3 04/15] selftests: tcp_authopt: Initial sockopt manipulation Leonard Crestez
2021-08-24 21:34 ` [RFCv3 05/15] tcp: authopt: Add crypto initialization Leonard Crestez
2021-08-24 23:02 ` Eric Dumazet
2021-08-24 23:34 ` Eric Dumazet
2021-08-25 8:08 ` Herbert Xu
2021-08-25 14:55 ` Eric Dumazet
2021-08-25 16:04 ` Ard Biesheuvel
2021-08-25 16:31 ` Leonard Crestez
2021-08-25 16:35 ` Leonard Crestez
2021-08-25 17:55 ` Eric Dumazet
2021-08-25 18:56 ` Leonard Crestez
2021-08-24 21:34 ` [RFCv3 06/15] tcp: authopt: Compute packet signatures Leonard Crestez
2021-08-24 21:34 ` [RFCv3 07/15] tcp: authopt: Hook into tcp core Leonard Crestez
2021-08-24 22:59 ` Eric Dumazet
2021-08-25 16:32 ` Leonard Crestez
2021-08-24 21:34 ` Leonard Crestez [this message]
2021-08-24 21:34 ` [RFCv3 09/15] selftests: tcp_authopt: Test key address binding Leonard Crestez
2021-08-25 5:18 ` David Ahern
2021-08-25 16:37 ` Leonard Crestez
2021-08-24 21:34 ` [RFCv3 10/15] selftests: tcp_authopt: Capture and verify packets Leonard Crestez
2021-08-24 21:34 ` [RFCv3 11/15] selftests: Initial tcp_authopt support for nettest Leonard Crestez
2021-08-24 21:34 ` [RFCv3 12/15] selftests: Initial tcp_authopt support for fcnal-test Leonard Crestez
2021-08-24 21:34 ` [RFCv3 13/15] selftests: Add -t tcp_authopt option for fcnal-test.sh Leonard Crestez
2021-08-24 21:34 ` [RFCv3 14/15] tcp: authopt: Add key selection controls Leonard Crestez
2021-08-24 21:34 ` [RFCv3 15/15] selftests: tcp_authopt: Add tests for rollover Leonard Crestez
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