diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2022-11-25 23:29:49 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-30 05:24:25 +0100 |
| commit | b3ea6b272d79a43baaaa9af871ee66f6fda4688f (patch) | |
| tree | 8bf89e6610ebfbe5289d83a3f7a90082e6eb29cf /net/mptcp/protocol.h | |
| parent | mptcp: track accurately the incoming MPC suboption type (diff) | |
| download | linux-b3ea6b272d79a43baaaa9af871ee66f6fda4688f.tar.xz linux-b3ea6b272d79a43baaaa9af871ee66f6fda4688f.zip | |
mptcp: consolidate initial ack seq generation
Currently the initial ack sequence is generated on demand whenever
it's requested and the remote key is handy. The relevant code is
scattered in different places and can lead to multiple, unneeded,
crypto operations.
This change consolidates the ack sequence generation code in a single
helper, storing the sequence number at the subflow level.
The above additionally saves a few conditional in fast-path and will
simplify the upcoming fast-open implementation.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 6a09ab99a12d..b5abea3d1a9c 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -467,7 +467,7 @@ struct mptcp_subflow_context { send_fastclose : 1, send_infinite_map : 1, rx_eof : 1, - can_ack : 1, /* only after processing the remote a key */ + remote_key_valid : 1, /* received the peer key from */ disposable : 1, /* ctx can be free at ulp release time */ stale : 1, /* unable to snd/rcv data, do not use for xmit */ local_id_valid : 1, /* local_id is correctly initialized */ @@ -477,7 +477,10 @@ struct mptcp_subflow_context { u64 thmac; u32 local_nonce; u32 remote_token; - u8 hmac[MPTCPOPT_HMAC_LEN]; + union { + u8 hmac[MPTCPOPT_HMAC_LEN]; /* MPJ subflow only */ + u64 iasn; /* initial ack sequence number, MPC subflows only */ + }; u8 local_id; u8 remote_id; u8 reset_seen:1; @@ -603,7 +606,7 @@ unsigned int mptcp_stale_loss_cnt(const struct net *net); int mptcp_get_pm_type(const struct net *net); void mptcp_copy_inaddrs(struct sock *msk, const struct sock *ssk); void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow, - struct mptcp_options_received *mp_opt); + const struct mptcp_options_received *mp_opt); bool __mptcp_retransmit_pending_data(struct sock *sk); void mptcp_check_and_set_pending(struct sock *sk); void __mptcp_push_pending(struct sock *sk, unsigned int flags); |