diff options
Diffstat (limited to 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 7384613ea..07f6242af 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1087,6 +1087,15 @@ static inline void __mptcp_do_fallback(struct mptcp_sock *msk) set_bit(MPTCP_FALLBACK_DONE, &msk->flags); } +static inline bool __mptcp_has_initial_subflow(const struct mptcp_sock *msk) +{ + struct sock *ssk = READ_ONCE(msk->first); + + return ssk && ((1 << inet_sk_state_load(ssk)) & + (TCPF_ESTABLISHED | TCPF_SYN_SENT | + TCPF_SYN_RECV | TCPF_LISTEN)); +} + static inline void mptcp_do_fallback(struct sock *ssk) { struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); |