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authorPeter Krystad <peter.krystad@linux.intel.com>2020-03-27 14:48:39 -0700
committerDavid S. Miller <davem@davemloft.net>2020-03-29 22:14:48 -0700
commitf296234c98a8fcec94eec80304a873f635d350ea (patch)
tree1ae836ccde8bb96db7d1b60a338d47375156734d /include/net
parent1b1c7a0ef7f323f37281b134ade17baa94779787 (diff)
mptcp: Add handling of incoming MP_JOIN requests
Process the MP_JOIN option in a SYN packet with the same flow as MP_CAPABLE but when the third ACK is received add the subflow to the MPTCP socket subflow list instead of adding it to the TCP socket accept queue. The subflow is added at the end of the subflow list so it will not interfere with the existing subflows operation and no data is expected to be transmitted on it. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/mptcp.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/mptcp.h b/include/net/mptcp.h
index 0d5ea71dd3d0..a4aea0e4addc 100644
--- a/include/net/mptcp.h
+++ b/include/net/mptcp.h
@@ -42,6 +42,10 @@ struct mptcp_out_options {
u8 addr_id;
u64 ahmac;
u8 rm_id;
+ u8 join_id;
+ u8 backup;
+ u32 nonce;
+ u64 thmac;
struct mptcp_ext ext_copy;
#endif
};
@@ -115,6 +119,8 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to,
skb_ext_find(from, SKB_EXT_MPTCP));
}
+bool mptcp_sk_is_subflow(const struct sock *sk);
+
#else
static inline void mptcp_init(void)
@@ -181,6 +187,11 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to,
return true;
}
+static inline bool mptcp_sk_is_subflow(const struct sock *sk)
+{
+ return false;
+}
+
#endif /* CONFIG_MPTCP */
#if IS_ENABLED(CONFIG_MPTCP_IPV6)