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| author | Peter Krystad <peter.krystad@linux.intel.com> | 2020-01-22 03:56:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-24 15:44:07 +0300 |
| commit | eda7acddf8080bb2d022a8d4b8b2345eb80c63ec (patch) | |
| tree | 91aded05b9988f6f8b55683eec74712a33cb2270 /include/linux/tcp.h | |
| parent | f870fa0b5768842cb4690c1c11f19f28b731ae6d (diff) | |
| download | linux-eda7acddf8080bb2d022a8d4b8b2345eb80c63ec.tar.xz | |
mptcp: Handle MPTCP TCP options
Add hooks to parse and format the MP_CAPABLE option.
This option is handled according to MPTCP version 0 (RFC6824).
MPTCP version 1 MP_CAPABLE (RFC6824bis/RFC8684) will be added later in
coordination with related code changes.
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Co-developed-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com>
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
| -rw-r--r-- | include/linux/tcp.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index ca6f01531e64..52798ab00394 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -78,6 +78,16 @@ struct tcp_sack_block { #define TCP_SACK_SEEN (1 << 0) /*1 = peer is SACK capable, */ #define TCP_DSACK_SEEN (1 << 2) /*1 = DSACK was received from peer*/ +#if IS_ENABLED(CONFIG_MPTCP) +struct mptcp_options_received { + u64 sndr_key; + u64 rcvr_key; + u8 mp_capable : 1, + mp_join : 1, + dss : 1; +}; +#endif + struct tcp_options_received { /* PAWS/RTTM data */ int ts_recent_stamp;/* Time we stored ts_recent (for aging) */ @@ -95,6 +105,9 @@ struct tcp_options_received { u8 num_sacks; /* Number of SACK blocks */ u16 user_mss; /* mss requested by user in ioctl */ u16 mss_clamp; /* Maximal mss, negotiated at connection setup */ +#if IS_ENABLED(CONFIG_MPTCP) + struct mptcp_options_received mptcp; +#endif }; static inline void tcp_clear_options(struct tcp_options_received *rx_opt) @@ -104,6 +117,11 @@ static inline void tcp_clear_options(struct tcp_options_received *rx_opt) #if IS_ENABLED(CONFIG_SMC) rx_opt->smc_ok = 0; #endif +#if IS_ENABLED(CONFIG_MPTCP) + rx_opt->mptcp.mp_capable = 0; + rx_opt->mptcp.mp_join = 0; + rx_opt->mptcp.dss = 0; +#endif } /* This is the max number of SACKS that we'll generate and process. It's safe |