diff options
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/structs.h | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 8a0808eab81..fa87873fee7 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -744,6 +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 *); @@ -1785,20 +1786,16 @@ 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. * @@ -1947,6 +1944,11 @@ 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); |