From 9f7d653b67aed2d92540fbb0a8adaf32fcf352ae Mon Sep 17 00:00:00 2001 From: Michio Honda Date: Tue, 26 Apr 2011 19:32:51 +0900 Subject: sctp: Add Auto-ASCONF support (core). SCTP reconfigure the IP addresses in the association by using ASCONF chunks as mentioned in RFC5061. For example, we can start to use the newly configured IP address in the existing association. This patch implements automatic ASCONF operation in the SCTP stack with address events in the host computer, which is called auto_asconf. Signed-off-by: Michio Honda Signed-off-by: YOSHIFUJI Hideaki Acked-by: Wei Yongjun Signed-off-by: David S. Miller --- include/net/sctp/structs.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/net/sctp/structs.h') diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 7df327a6d564..cd8c929e6b0d 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -205,6 +205,11 @@ extern struct sctp_globals { * It is a list of sctp_sockaddr_entry. */ struct list_head local_addr_list; + int default_auto_asconf; + struct list_head addr_waitq; + struct timer_list addr_wq_timer; + struct list_head auto_asconf_splist; + spinlock_t addr_wq_lock; /* Lock that protects the local_addr_list writers */ spinlock_t addr_list_lock; @@ -264,6 +269,11 @@ extern struct sctp_globals { #define sctp_port_hashtable (sctp_globals.port_hashtable) #define sctp_local_addr_list (sctp_globals.local_addr_list) #define sctp_local_addr_lock (sctp_globals.addr_list_lock) +#define sctp_auto_asconf_splist (sctp_globals.auto_asconf_splist) +#define sctp_addr_waitq (sctp_globals.addr_waitq) +#define sctp_addr_wq_timer (sctp_globals.addr_wq_timer) +#define sctp_addr_wq_lock (sctp_globals.addr_wq_lock) +#define sctp_default_auto_asconf (sctp_globals.default_auto_asconf) #define sctp_scope_policy (sctp_globals.ipv4_scope_policy) #define sctp_addip_enable (sctp_globals.addip_enable) #define sctp_addip_noauth (sctp_globals.addip_noauth_enable) @@ -341,6 +351,8 @@ struct sctp_sock { atomic_t pd_mode; /* Receive to here while partial delivery is in effect. */ struct sk_buff_head pd_lobby; + struct list_head auto_asconf_list; + int do_auto_asconf; }; static inline struct sctp_sock *sctp_sk(const struct sock *sk) @@ -792,6 +804,8 @@ struct sctp_sockaddr_entry { __u8 valid; }; +#define SCTP_ADDRESS_TICK_DELAY 500 + typedef struct sctp_chunk *(sctp_packet_phandler_t)(struct sctp_association *); /* This structure holds lists of chunks as we are assembling for @@ -1236,6 +1250,7 @@ sctp_scope_t sctp_scope(const union sctp_addr *); int sctp_in_scope(const union sctp_addr *addr, const sctp_scope_t scope); int sctp_is_any(struct sock *sk, const union sctp_addr *addr); int sctp_addr_is_valid(const union sctp_addr *addr); +int sctp_is_ep_boundall(struct sock *sk); /* What type of endpoint? */ -- cgit v1.2.3 From 8a07eb0a50aebc8c95478d49c28c7f8419a26cef Mon Sep 17 00:00:00 2001 From: Michio Honda Date: Tue, 26 Apr 2011 20:19:36 +0900 Subject: sctp: Add ASCONF operation on the single-homed host In this case, the SCTP association transmits an ASCONF packet including addition of the new IP address and deletion of the old address. This patch implements this functionality. In this case, the ASCONF chunk is added to the beginning of the queue, because the other chunks cannot be transmitted in this state. Signed-off-by: Michio Honda Signed-off-by: YOSHIFUJI Hideaki Acked-by: Wei Yongjun Signed-off-by: David S. Miller --- include/net/sctp/structs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/sctp/structs.h') diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index cd8c929e6b0d..31d7ea2e1d2a 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1913,6 +1913,8 @@ struct sctp_association { * after reaching 4294967295. */ __u32 addip_serial; + union sctp_addr *asconf_addr_del_pending; + int src_out_of_asoc_ok; /* SCTP AUTH: list of the endpoint shared keys. These * keys are provided out of band by the user applicaton -- cgit v1.2.3 From 60063497a95e716c9a689af3be2687d261f115b4 Mon Sep 17 00:00:00 2001 From: Arun Sharma Date: Tue, 26 Jul 2011 16:09:06 -0700 Subject: atomic: use This allows us to move duplicated code in (atomic_inc_not_zero() for now) to Signed-off-by: Arun Sharma Reviewed-by: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Cc: Eric Dumazet Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/net/sctp/structs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/net/sctp/structs.h') diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 31d7ea2e1d2a..f7d9c3fc06fd 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -60,7 +60,7 @@ #include /* We get struct in6_addr */ #include #include /* We get MAXHOSTNAMELEN. */ -#include /* This gets us atomic counters. */ +#include /* This gets us atomic counters. */ #include /* We need sk_buff_head. */ #include /* We need tq_struct. */ #include /* We need sctp* header structs. */ -- cgit v1.2.3 From 6af29ccc223b0feb6fc6112281c3fa3cdb1afddf Mon Sep 17 00:00:00 2001 From: Michio Honda Date: Thu, 16 Jun 2011 17:14:34 +0900 Subject: sctp: Bundle HEAERTBEAT into ASCONF_ACK With this patch a HEARTBEAT chunk is bundled into the ASCONF-ACK for ADD IP ADDRESS, confirming the new destination as quickly as possible. Signed-off-by: Michio Honda Signed-off-by: David S. Miller --- include/net/sctp/structs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/sctp/structs.h') diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index f7d9c3fc06fd..e90e7a9935dd 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1915,6 +1915,7 @@ struct sctp_association { __u32 addip_serial; union sctp_addr *asconf_addr_del_pending; int src_out_of_asoc_ok; + struct sctp_transport *new_transport; /* SCTP AUTH: list of the endpoint shared keys. These * keys are provided out of band by the user applicaton -- cgit v1.2.3