diff options
| author | Matthieu Baerts (NGI0) <matttbe@kernel.org> | 2024-09-09 22:09:22 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-09-12 00:57:50 +0200 |
| commit | 6982826fe5e53ef115836de7dd397bd970030937 (patch) | |
| tree | 623b59339e04b90a8a26a3c6699865178d3fd52e /include/net | |
| parent | mptcp: export mptcp_subflow_early_fallback() (diff) | |
| download | linux-6982826fe5e53ef115836de7dd397bd970030937.tar.xz linux-6982826fe5e53ef115836de7dd397bd970030937.zip | |
mptcp: fallback to TCP after SYN+MPC drops
Some middleboxes might be nasty with MPTCP, and decide to drop packets
with MPTCP options, instead of just dropping the MPTCP options (or
letting them pass...).
In this case, it sounds better to fallback to "plain" TCP after 2
retransmissions, and try again.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/477
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20240909-net-next-mptcp-fallback-x-mpc-v1-2-da7ebb4cd2a3@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mptcp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/mptcp.h b/include/net/mptcp.h index 0bc4ab03f487..814b5f2e3ed5 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -223,6 +223,8 @@ static inline __be32 mptcp_reset_option(const struct sk_buff *skb) return htonl(0u); } + +void mptcp_active_detect_blackhole(struct sock *sk, bool expired); #else static inline void mptcp_init(void) @@ -307,6 +309,8 @@ static inline struct request_sock *mptcp_subflow_reqsk_alloc(const struct reques } static inline __be32 mptcp_reset_option(const struct sk_buff *skb) { return htonl(0u); } + +static inline void mptcp_active_detect_blackhole(struct sock *sk, bool expired) { } #endif /* CONFIG_MPTCP */ #if IS_ENABLED(CONFIG_MPTCP_IPV6) |