diff options
Diffstat (limited to 'include/net/sctp/structs.h')
| -rw-r--r-- | include/net/sctp/structs.h | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index bb965742b64..4d591bfce45 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -451,6 +451,7 @@ union sctp_params { struct sctp_random_param *random; struct sctp_chunks_param *chunks; struct sctp_hmac_algo_param *hmac_algo; + struct sctp_addip_param *addip; }; /* RFC 2960. Section 3.3.5 Heartbeat. @@ -743,6 +744,7 @@ struct sctp_chunk { __u8 tsn_missing_report; /* Data chunk missing counter. */ __u8 data_accepted; /* At least 1 chunk in this packet accepted */ __u8 auth; /* IN: was auth'ed | OUT: needs auth */ + __u8 has_asconf; /* IN: have seen an asconf before */ }; void sctp_chunk_hold(struct sctp_chunk *); @@ -758,12 +760,18 @@ void sctp_init_addrs(struct sctp_chunk *, union sctp_addr *, union sctp_addr *); const union sctp_addr *sctp_source(const struct sctp_chunk *chunk); +enum { + SCTP_ADDR_NEW, /* new address added to assoc/ep */ + SCTP_ADDR_SRC, /* address can be used as source */ + SCTP_ADDR_DEL, /* address about to be deleted */ +}; + /* This is a structure for holding either an IPv6 or an IPv4 address. */ struct sctp_sockaddr_entry { struct list_head list; struct rcu_head rcu; union sctp_addr a; - __u8 use_as_src; + __u8 state; __u8 valid; }; @@ -1188,10 +1196,12 @@ int sctp_bind_addr_dup(struct sctp_bind_addr *dest, const struct sctp_bind_addr *src, gfp_t gfp); int sctp_add_bind_addr(struct sctp_bind_addr *, union sctp_addr *, - __u8 use_as_src, gfp_t gfp); + __u8 addr_state, gfp_t gfp); int sctp_del_bind_addr(struct sctp_bind_addr *, union sctp_addr *); int sctp_bind_addr_match(struct sctp_bind_addr *, const union sctp_addr *, struct sctp_sock *); +int sctp_bind_addr_state(const struct sctp_bind_addr *bp, + const union sctp_addr *addr); union sctp_addr *sctp_find_unmatch_addr(struct sctp_bind_addr *bp, const union sctp_addr *addrs, int addrcnt, @@ -1784,20 +1794,16 @@ struct sctp_association { */ struct sctp_chunk *addip_last_asconf; - /* ADDIP Section 4.2 Upon reception of an ASCONF Chunk. + /* ADDIP Section 5.2 Upon reception of an ASCONF Chunk. * - * IMPLEMENTATION NOTE: As an optimization a receiver may wish - * to save the last ASCONF-ACK for some predetermined period - * of time and instead of re-processing the ASCONF (with the - * same serial number) it may just re-transmit the - * ASCONF-ACK. It may wish to use the arrival of a new serial - * number to discard the previously saved ASCONF-ACK or any - * other means it may choose to expire the saved ASCONF-ACK. + * This is needed to implement itmes E1 - E4 of the updated + * spec. Here is the justification: * - * [This is our saved ASCONF-ACK. We invalidate it when a new - * ASCONF serial number arrives.] + * Since the peer may bundle multiple ASCONF chunks toward us, + * we now need the ability to cache multiple ACKs. The section + * describes in detail how they are cached and cleaned up. */ - struct sctp_chunk *addip_last_asconf_ack; + struct list_head asconf_ack_list; /* These ASCONF chunks are waiting to be sent. * @@ -1938,12 +1944,19 @@ void sctp_assoc_rwnd_increase(struct sctp_association *, unsigned); void sctp_assoc_rwnd_decrease(struct sctp_association *, unsigned); void sctp_assoc_set_primary(struct sctp_association *, struct sctp_transport *); +void sctp_assoc_del_nonprimary_peers(struct sctp_association *, + struct sctp_transport *); int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *, gfp_t); int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *, struct sctp_cookie*, gfp_t gfp); int sctp_assoc_set_id(struct sctp_association *, gfp_t); +void sctp_assoc_clean_asconf_ack_cache(const struct sctp_association *asoc); +struct sctp_chunk *sctp_assoc_lookup_asconf_ack( + const struct sctp_association *asoc, + __be32 serial); + int sctp_cmp_addr_exact(const union sctp_addr *ss1, const union sctp_addr *ss2); |