diff options
| author | Peter Krystad <peter.krystad@linux.intel.com> | 2020-03-27 14:48:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-29 22:14:48 -0700 |
| commit | f296234c98a8fcec94eec80304a873f635d350ea (patch) | |
| tree | 1ae836ccde8bb96db7d1b60a338d47375156734d /net/mptcp/protocol.h | |
| parent | 1b1c7a0ef7f323f37281b134ade17baa94779787 (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 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 8d4761ae3951..ef94e36b8560 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -17,6 +17,9 @@ #define OPTION_MPTCP_MPC_SYN BIT(0) #define OPTION_MPTCP_MPC_SYNACK BIT(1) #define OPTION_MPTCP_MPC_ACK BIT(2) +#define OPTION_MPTCP_MPJ_SYN BIT(3) +#define OPTION_MPTCP_MPJ_SYNACK BIT(4) +#define OPTION_MPTCP_MPJ_ACK BIT(5) #define OPTION_MPTCP_ADD_ADDR BIT(6) #define OPTION_MPTCP_ADD_ADDR6 BIT(7) #define OPTION_MPTCP_RM_ADDR BIT(8) @@ -36,6 +39,9 @@ #define TCPOLEN_MPTCP_MPC_SYNACK 12 #define TCPOLEN_MPTCP_MPC_ACK 20 #define TCPOLEN_MPTCP_MPC_ACK_DATA 22 +#define TCPOLEN_MPTCP_MPJ_SYN 12 +#define TCPOLEN_MPTCP_MPJ_SYNACK 16 +#define TCPOLEN_MPTCP_MPJ_ACK 24 #define TCPOLEN_MPTCP_DSS_BASE 4 #define TCPOLEN_MPTCP_DSS_ACK32 4 #define TCPOLEN_MPTCP_DSS_ACK64 8 @@ -53,6 +59,9 @@ #define TCPOLEN_MPTCP_PORT_LEN 2 #define TCPOLEN_MPTCP_RM_ADDR_BASE 4 +#define MPTCPOPT_BACKUP BIT(0) +#define MPTCPOPT_HMAC_LEN 20 + /* MPTCP MP_CAPABLE flags */ #define MPTCP_VERSION_MASK (0x0F) #define MPTCP_CAP_CHECKSUM_REQD BIT(7) @@ -162,11 +171,15 @@ struct mptcp_subflow_request_sock { backup : 1, remote_key_valid : 1; u8 local_id; + u8 remote_id; u64 local_key; u64 remote_key; u64 idsn; u32 token; u32 ssn_offset; + u64 thmac; + u32 local_nonce; + u32 remote_nonce; }; static inline struct mptcp_subflow_request_sock * @@ -190,15 +203,23 @@ struct mptcp_subflow_context { u32 map_data_len; u32 request_mptcp : 1, /* send MP_CAPABLE */ mp_capable : 1, /* remote is MPTCP capable */ + mp_join : 1, /* remote is JOINing */ fully_established : 1, /* path validated */ + pm_notified : 1, /* PM hook called for established status */ conn_finished : 1, map_valid : 1, mpc_map : 1, + backup : 1, data_avail : 1, rx_eof : 1, data_fin_tx_enable : 1, can_ack : 1; /* only after processing the remote a key */ u64 data_fin_tx_seq; + u32 remote_nonce; + u64 thmac; + u32 local_nonce; + u8 local_id; + u8 remote_id; struct sock *tcp_sock; /* tcp sk backpointer */ struct sock *conn; /* parent mptcp_sock */ @@ -270,11 +291,13 @@ void mptcp_get_options(const struct sk_buff *skb, void mptcp_finish_connect(struct sock *sk); void mptcp_data_ready(struct sock *sk, struct sock *ssk); +bool mptcp_finish_join(struct sock *sk); int mptcp_token_new_request(struct request_sock *req); void mptcp_token_destroy_request(u32 token); int mptcp_token_new_connect(struct sock *sk); int mptcp_token_new_accept(u32 token, struct sock *conn); +struct mptcp_sock *mptcp_token_get_sock(u32 token); void mptcp_token_destroy(u32 token); void mptcp_crypto_key_sha(u64 key, u32 *token, u64 *idsn); |