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| author | Mat Martineau <mathew.j.martineau@linux.intel.com> | 2020-07-28 15:12:03 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-28 17:02:42 -0700 |
| commit | 3721b9b64676b3377a966f3d96acafd70bb32dd9 (patch) | |
| tree | 381876e12b5314fc7a6ec64e8deff9a3ba89fbce /net/mptcp/protocol.h | |
| parent | 7279da6145bbb2e41a61def5d9bca5b65f12de9d (diff) | |
| download | linux-next-3721b9b64676b3377a966f3d96acafd70bb32dd9.tar.gz | |
mptcp: Track received DATA_FIN sequence number and add related helpers
Incoming DATA_FIN headers need to propagate the presence of the DATA_FIN
bit and the associated sequence number to the MPTCP layer, even when
arriving on a bare ACK that does not get added to the receive queue. Add
structure members to store the DATA_FIN information and helpers to set
and check those values.
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 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 3f49cc105772..beb34b8a5363 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -193,12 +193,14 @@ struct mptcp_sock { u64 remote_key; u64 write_seq; u64 ack_seq; + u64 rcv_data_fin_seq; atomic64_t snd_una; unsigned long timer_ival; u32 token; unsigned long flags; bool can_ack; bool fully_established; + bool rcv_data_fin; bool snd_data_fin_enable; spinlock_t join_list_lock; struct work_struct work; @@ -385,6 +387,7 @@ void mptcp_data_ready(struct sock *sk, struct sock *ssk); bool mptcp_finish_join(struct sock *sk); void mptcp_data_acked(struct sock *sk); void mptcp_subflow_eof(struct sock *sk); +bool mptcp_update_rcv_data_fin(struct mptcp_sock *msk, u64 data_fin_seq); void __init mptcp_token_init(void); static inline void mptcp_token_init_request(struct request_sock *req) |