* FAILED: patch "[PATCH] mptcp: mib: count MPJ with backup flag" failed to apply to 5.10-stable tree
@ 2024-08-07 14:14 gregkh
2024-08-09 10:55 ` [PATCH 5.10.y] mptcp: mib: count MPJ with backup flag Matthieu Baerts (NGI0)
0 siblings, 1 reply; 2+ messages in thread
From: gregkh @ 2024-08-07 14:14 UTC (permalink / raw)
To: matttbe, martineau, pabeni; +Cc: stable
The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x 4dde0d72ccec500c60c798e036b852e013d6e124
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024080723-untangled-rogue-da43@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
4dde0d72ccec ("mptcp: mib: count MPJ with backup flag")
b3ea6b272d79 ("mptcp: consolidate initial ack seq generation")
f3589be0c420 ("mptcp: never shrink offered window")
74c7dfbee3e1 ("mptcp: consolidate in_opt sub-options fields in a bitmask")
a086aebae0eb ("mptcp: better binary layout for mptcp_options_received")
8d548ea1dd15 ("mptcp: do not set unconditionally csum_reqd on incoming opt")
eb7f33654dc1 ("mptcp: add the mibs for MP_FAIL")
478d770008b0 ("mptcp: send out MP_FAIL when data checksum fails")
5580d41b758a ("mptcp: MP_FAIL suboption receiving")
f444fea7896d ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 4dde0d72ccec500c60c798e036b852e013d6e124 Mon Sep 17 00:00:00 2001
From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
Date: Sat, 27 Jul 2024 12:01:26 +0200
Subject: [PATCH] mptcp: mib: count MPJ with backup flag
Without such counters, it is difficult to easily debug issues with MPJ
not having the backup flags on production servers.
This is not strictly a fix, but it eases to validate the following
patches without requiring to take packet traces, to query ongoing
connections with Netlink with admin permissions, or to guess by looking
at the behaviour of the packet scheduler. Also, the modification is self
contained, isolated, well controlled, and the increments are done just
after others, there from the beginning. It looks then safe, and helpful
to backport this.
Fixes: 4596a2c1b7f5 ("mptcp: allow creating non-backup subflows")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c
index c30405e76833..7884217f33eb 100644
--- a/net/mptcp/mib.c
+++ b/net/mptcp/mib.c
@@ -19,7 +19,9 @@ static const struct snmp_mib mptcp_snmp_list[] = {
SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS),
SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN),
SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX),
+ SNMP_MIB_ITEM("MPJoinSynBackupRx", MPTCP_MIB_JOINSYNBACKUPRX),
SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX),
+ SNMP_MIB_ITEM("MPJoinSynAckBackupRx", MPTCP_MIB_JOINSYNACKBACKUPRX),
SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC),
SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX),
SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h
index 2704afd0dfe4..66aa67f49d03 100644
--- a/net/mptcp/mib.h
+++ b/net/mptcp/mib.h
@@ -14,7 +14,9 @@ enum linux_mptcp_mib_field {
MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */
MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */
MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
+ MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */
MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
+ MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */
MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index a3778aee4e77..be406197b1c4 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -168,6 +168,9 @@ static int subflow_check_req(struct request_sock *req,
return 0;
} else if (opt_mp_join) {
SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINSYNRX);
+
+ if (mp_opt.backup)
+ SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINSYNBACKUPRX);
}
if (opt_mp_capable && listener->request_mptcp) {
@@ -577,6 +580,9 @@ static void subflow_finish_connect(struct sock *sk, const struct sk_buff *skb)
subflow->mp_join = 1;
MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNACKRX);
+ if (subflow->backup)
+ MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNACKBACKUPRX);
+
if (subflow_use_different_dport(msk, sk)) {
pr_debug("synack inet_dport=%d %d",
ntohs(inet_sk(sk)->inet_dport),
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH 5.10.y] mptcp: mib: count MPJ with backup flag
2024-08-07 14:14 FAILED: patch "[PATCH] mptcp: mib: count MPJ with backup flag" failed to apply to 5.10-stable tree gregkh
@ 2024-08-09 10:55 ` Matthieu Baerts (NGI0)
0 siblings, 0 replies; 2+ messages in thread
From: Matthieu Baerts (NGI0) @ 2024-08-09 10:55 UTC (permalink / raw)
To: stable, gregkh
Cc: MPTCP Upstream, Matthieu Baerts (NGI0), Mat Martineau,
Paolo Abeni
commit 4dde0d72ccec500c60c798e036b852e013d6e124 upstream.
Without such counters, it is difficult to easily debug issues with MPJ
not having the backup flags on production servers.
This is not strictly a fix, but it eases to validate the following
patches without requiring to take packet traces, to query ongoing
connections with Netlink with admin permissions, or to guess by looking
at the behaviour of the packet scheduler. Also, the modification is self
contained, isolated, well controlled, and the increments are done just
after others, there from the beginning. It looks then safe, and helpful
to backport this.
Fixes: 4596a2c1b7f5 ("mptcp: allow creating non-backup subflows")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
[ Conflicts in subflow.c because the context has changed in
commit b3ea6b272d79 ("mptcp: consolidate initial ack seq generation")
and commit 5bc56388c74f ("mptcp: add port number check for MP_JOIN")
which are not in this version. These commits are unrelated to this
modification. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
net/mptcp/mib.c | 2 ++
net/mptcp/mib.h | 2 ++
net/mptcp/subflow.c | 6 ++++++
3 files changed, 10 insertions(+)
diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c
index b921cbdd9aaa..f4034e000f3e 100644
--- a/net/mptcp/mib.c
+++ b/net/mptcp/mib.c
@@ -16,7 +16,9 @@ static const struct snmp_mib mptcp_snmp_list[] = {
SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS),
SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN),
SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX),
+ SNMP_MIB_ITEM("MPJoinSynBackupRx", MPTCP_MIB_JOINSYNBACKUPRX),
SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX),
+ SNMP_MIB_ITEM("MPJoinSynAckBackupRx", MPTCP_MIB_JOINSYNACKBACKUPRX),
SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC),
SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX),
SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h
index 47bcecce1106..a9f43ff00b3c 100644
--- a/net/mptcp/mib.h
+++ b/net/mptcp/mib.h
@@ -9,7 +9,9 @@ enum linux_mptcp_mib_field {
MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */
MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */
MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
+ MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */
MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
+ MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */
MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index a59c731d7fed..f4067484727e 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -135,6 +135,9 @@ static void subflow_init_req(struct request_sock *req,
return;
} else if (mp_opt.mp_join) {
SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINSYNRX);
+
+ if (mp_opt.backup)
+ SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINSYNBACKUPRX);
}
if (mp_opt.mp_capable && listener->request_mptcp) {
@@ -347,6 +350,9 @@ static void subflow_finish_connect(struct sock *sk, const struct sk_buff *skb)
subflow->mp_join = 1;
MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNACKRX);
+
+ if (subflow->backup)
+ MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNACKBACKUPRX);
} else if (mptcp_check_fallback(sk)) {
fallback:
mptcp_rcv_space_init(mptcp_sk(parent), sk);
--
2.45.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2024-08-09 10:55 ` [PATCH 5.10.y] mptcp: mib: count MPJ with backup flag Matthieu Baerts (NGI0)
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