diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tcp.h | 35 | ||||
| -rw-r--r-- | include/net/mptcp.h | 105 |
2 files changed, 139 insertions, 1 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index ca6f01531e64..4e2124607d32 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -78,6 +78,27 @@ 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; + u64 data_ack; + u64 data_seq; + u32 subflow_seq; + u16 data_len; + u8 mp_capable : 1, + mp_join : 1, + dss : 1; + u8 use_map:1, + dsn64:1, + data_fin:1, + use_ack:1, + ack64:1, + mpc_map:1, + __unused:2; +}; +#endif + struct tcp_options_received { /* PAWS/RTTM data */ int ts_recent_stamp;/* Time we stored ts_recent (for aging) */ @@ -95,6 +116,9 @@ 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 +128,11 @@ 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 @@ -119,6 +148,9 @@ struct tcp_request_sock { const struct tcp_request_sock_ops *af_specific; u64 snt_synack; /* first SYNACK sent time */ bool tfo_listener; +#if IS_ENABLED(CONFIG_MPTCP) + bool is_mptcp; +#endif u32 txhash; u32 rcv_isn; u32 snt_isn; @@ -379,6 +411,9 @@ struct tcp_sock { u32 mtu_info; /* We received an ICMP_FRAG_NEEDED / ICMPV6_PKT_TOOBIG * while socket was owned by user. */ +#if IS_ENABLED(CONFIG_MPTCP) + bool is_mptcp; +#endif #ifdef CONFIG_TCP_MD5SIG /* TCP AF-Specific parts; only used by MD5 Signature support so far */ diff --git a/include/net/mptcp.h b/include/net/mptcp.h index 0573ae75c3db..27627e2d1bc2 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -9,6 +9,7 @@ #define __NET_MPTCP_H #include <linux/skbuff.h> +#include <linux/tcp.h> #include <linux/types.h> /* MPTCP sk_buff extension data */ @@ -22,12 +23,49 @@ struct mptcp_ext { data_fin:1, use_ack:1, ack64:1, - __unused:3; + mpc_map:1, + __unused:2; /* one byte hole */ }; +struct mptcp_out_options { +#if IS_ENABLED(CONFIG_MPTCP) + u16 suboptions; + u64 sndr_key; + u64 rcvr_key; + struct mptcp_ext ext_copy; +#endif +}; + #ifdef CONFIG_MPTCP +void mptcp_init(void); + +static inline bool sk_is_mptcp(const struct sock *sk) +{ + return tcp_sk(sk)->is_mptcp; +} + +static inline bool rsk_is_mptcp(const struct request_sock *req) +{ + return tcp_rsk(req)->is_mptcp; +} + +void mptcp_parse_option(const struct sk_buff *skb, const unsigned char *ptr, + int opsize, struct tcp_options_received *opt_rx); +bool mptcp_syn_options(struct sock *sk, const struct sk_buff *skb, + unsigned int *size, struct mptcp_out_options *opts); +void mptcp_rcv_synsent(struct sock *sk); +bool mptcp_synack_options(const struct request_sock *req, unsigned int *size, + struct mptcp_out_options *opts); +bool mptcp_established_options(struct sock *sk, struct sk_buff *skb, + unsigned int *size, unsigned int remaining, + struct mptcp_out_options *opts); +void mptcp_incoming_options(struct sock *sk, struct sk_buff *skb, + struct tcp_options_received *opt_rx); + +void mptcp_write_options(__be32 *ptr, struct mptcp_out_options *opts); + /* move the skb extension owership, with the assumption that 'to' is * newly allocated */ @@ -70,6 +108,59 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to, #else +static inline void mptcp_init(void) +{ +} + +static inline bool sk_is_mptcp(const struct sock *sk) +{ + return false; +} + +static inline bool rsk_is_mptcp(const struct request_sock *req) +{ + return false; +} + +static inline void mptcp_parse_option(const struct sk_buff *skb, + const unsigned char *ptr, int opsize, + struct tcp_options_received *opt_rx) +{ +} + +static inline bool mptcp_syn_options(struct sock *sk, const struct sk_buff *skb, + unsigned int *size, + struct mptcp_out_options *opts) +{ + return false; +} + +static inline void mptcp_rcv_synsent(struct sock *sk) +{ +} + +static inline bool mptcp_synack_options(const struct request_sock *req, + unsigned int *size, + struct mptcp_out_options *opts) +{ + return false; +} + +static inline bool mptcp_established_options(struct sock *sk, + struct sk_buff *skb, + unsigned int *size, + unsigned int remaining, + struct mptcp_out_options *opts) +{ + return false; +} + +static inline void mptcp_incoming_options(struct sock *sk, + struct sk_buff *skb, + struct tcp_options_received *opt_rx) +{ +} + static inline void mptcp_skb_ext_move(struct sk_buff *to, const struct sk_buff *from) { @@ -82,4 +173,16 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to, } #endif /* CONFIG_MPTCP */ + +void mptcp_handle_ipv6_mapped(struct sock *sk, bool mapped); + +#if IS_ENABLED(CONFIG_MPTCP_IPV6) +int mptcpv6_init(void); +#elif IS_ENABLED(CONFIG_IPV6) +static inline int mptcpv6_init(void) +{ + return 0; +} +#endif + #endif /* __NET_MPTCP_H */ |