From: Mat Martineau <mathew.j.martineau@linux.intel.com>
To: netdev@vger.kernel.org
Cc: Davide Caratti <dcaratti@redhat.com>,
davem@davemloft.net, kuba@kernel.org,
matthieu.baerts@tessares.net, mptcp@lists.linux.dev,
Mat Martineau <mathew.j.martineau@linux.intel.com>
Subject: [PATCH net-next 8/8] mptcp: drop all sub-options except ADD_ADDR when the echo bit is set
Date: Tue, 6 Apr 2021 17:16:04 -0700 [thread overview]
Message-ID: <20210407001604.85071-9-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: <20210407001604.85071-1-mathew.j.martineau@linux.intel.com>
From: Davide Caratti <dcaratti@redhat.com>
Current Linux carries echo-ed ADD_ADDR over pure TCP ACKs, so there is no
need to add a DSS element that would fit only ADD_ADDR with IPv4 address.
Drop the DSS from echo-ed ADD_ADDR, regardless of the IP version.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
net/mptcp/options.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index c7eb61d0564c..d51c3ad54d9a 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -624,7 +624,8 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
int len;
if ((mptcp_pm_should_add_signal_ipv6(msk) ||
- mptcp_pm_should_add_signal_port(msk)) &&
+ mptcp_pm_should_add_signal_port(msk) ||
+ mptcp_pm_should_add_signal_echo(msk)) &&
skb && skb_is_tcp_pure_ack(skb)) {
pr_debug("drop other suboptions");
opts->suboptions = 0;
--
2.31.1
next prev parent reply other threads:[~2021-04-07 0:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 0:15 [PATCH net-next 0/8] mptcp: Cleanup, a new test case, and header trimming Mat Martineau
2021-04-07 0:15 ` [PATCH net-next 1/8] mptcp: move flags and ifindex out of mptcp_addr_info Mat Martineau
2021-04-07 0:15 ` [PATCH net-next 2/8] mptcp: use mptcp_addr_info in mptcp_out_options Mat Martineau
2021-04-07 0:15 ` [PATCH net-next 3/8] mptcp: drop OPTION_MPTCP_ADD_ADDR6 Mat Martineau
2021-04-07 0:16 ` [PATCH net-next 4/8] mptcp: use mptcp_addr_info in mptcp_options_received Mat Martineau
2021-04-07 0:16 ` [PATCH net-next 5/8] mptcp: drop MPTCP_ADDR_IPVERSION_4/6 Mat Martineau
2021-04-07 0:16 ` [PATCH net-next 6/8] mptcp: unify add_addr(6)_generate_hmac Mat Martineau
2021-04-07 0:16 ` [PATCH net-next 7/8] selftests: mptcp: add the net device name testcase Mat Martineau
2021-04-07 0:16 ` Mat Martineau [this message]
2021-04-07 21:20 ` [PATCH net-next 0/8] mptcp: Cleanup, a new test case, and header trimming patchwork-bot+netdevbpf
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