From 7a090b04522b46a219c271d4cd2abbf572623e03 Mon Sep 17 00:00:00 2001 From: Xin Long Date: Wed, 18 Jan 2017 00:44:44 +0800 Subject: [PATCH] sctp: add stream reconf primitive This patch is to add a primitive based on sctp primitive frame for sending stream reconf request. It works as the other primitives, and create a SCTP_CMD_REPLY command to send the request chunk out. sctp_primitive_RECONF would be the api to send a reconf request chunk. Signed-off-by: Xin Long Signed-off-by: David S. Miller --- include/net/sctp/constants.h | 3 ++- include/net/sctp/sctp.h | 2 ++ include/net/sctp/sm.h | 1 + net/sctp/primitive.c | 3 +++ net/sctp/sm_statefuns.c | 13 +++++++++++++ net/sctp/sm_statetable.c | 20 ++++++++++++++++++++ 6 files changed, 41 insertions(+), 1 deletion(-) diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h index 8307c862b5c2..3567c971cf3b 100644 --- a/include/net/sctp/constants.h +++ b/include/net/sctp/constants.h @@ -114,9 +114,10 @@ typedef enum { SCTP_PRIMITIVE_SEND, SCTP_PRIMITIVE_REQUESTHEARTBEAT, SCTP_PRIMITIVE_ASCONF, + SCTP_PRIMITIVE_RECONF, } sctp_event_primitive_t; -#define SCTP_EVENT_PRIMITIVE_MAX SCTP_PRIMITIVE_ASCONF +#define SCTP_EVENT_PRIMITIVE_MAX SCTP_PRIMITIVE_RECONF #define SCTP_NUM_PRIMITIVE_TYPES (SCTP_EVENT_PRIMITIVE_MAX + 1) /* We define here a utility type for manipulating subtypes. diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 598d938b0d0a..bc0e049b1474 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -141,6 +141,8 @@ int sctp_primitive_ABORT(struct net *, struct sctp_association *, void *arg); int sctp_primitive_SEND(struct net *, struct sctp_association *, void *arg); int sctp_primitive_REQUESTHEARTBEAT(struct net *, struct sctp_association *, void *arg); int sctp_primitive_ASCONF(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_RECONF(struct net *net, struct sctp_association *asoc, + void *arg); /* * sctp/input.c diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h index d2d9e28fe783..430ed139fbbb 100644 --- a/include/net/sctp/sm.h +++ b/include/net/sctp/sm.h @@ -157,6 +157,7 @@ sctp_state_fn_t sctp_sf_error_shutdown; sctp_state_fn_t sctp_sf_ignore_primitive; sctp_state_fn_t sctp_sf_do_prm_requestheartbeat; sctp_state_fn_t sctp_sf_do_prm_asconf; +sctp_state_fn_t sctp_sf_do_prm_reconf; /* Prototypes for other event state functions. */ sctp_state_fn_t sctp_sf_do_no_pending_tsn; diff --git a/net/sctp/primitive.c b/net/sctp/primitive.c index ab8d9f96a177..f0553a022859 100644 --- a/net/sctp/primitive.c +++ b/net/sctp/primitive.c @@ -211,3 +211,6 @@ DECLARE_PRIMITIVE(REQUESTHEARTBEAT); */ DECLARE_PRIMITIVE(ASCONF); + +/* RE-CONFIG 5.1 */ +DECLARE_PRIMITIVE(RECONF); diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 2ae186aba9a8..782e579472c9 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -5185,6 +5185,19 @@ sctp_disposition_t sctp_sf_do_prm_asconf(struct net *net, return SCTP_DISPOSITION_CONSUME; } +/* RE-CONFIG Section 5.1 RECONF Chunk Procedures */ +sctp_disposition_t sctp_sf_do_prm_reconf(struct net *net, + const struct sctp_endpoint *ep, + const struct sctp_association *asoc, + const sctp_subtype_t type, + void *arg, sctp_cmd_seq_t *commands) +{ + struct sctp_chunk *chunk = arg; + + sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(chunk)); + return SCTP_DISPOSITION_CONSUME; +} + /* * Ignore the primitive event * diff --git a/net/sctp/sm_statetable.c b/net/sctp/sm_statetable.c index 3da521abfc57..b5438b4f6c1e 100644 --- a/net/sctp/sm_statetable.c +++ b/net/sctp/sm_statetable.c @@ -643,6 +643,25 @@ chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = { TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \ } /* TYPE_SCTP_PRIMITIVE_ASCONF */ +#define TYPE_SCTP_PRIMITIVE_RECONF { \ + /* SCTP_STATE_CLOSED */ \ + TYPE_SCTP_FUNC(sctp_sf_error_closed), \ + /* SCTP_STATE_COOKIE_WAIT */ \ + TYPE_SCTP_FUNC(sctp_sf_error_closed), \ + /* SCTP_STATE_COOKIE_ECHOED */ \ + TYPE_SCTP_FUNC(sctp_sf_error_closed), \ + /* SCTP_STATE_ESTABLISHED */ \ + TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \ + /* SCTP_STATE_SHUTDOWN_PENDING */ \ + TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \ + /* SCTP_STATE_SHUTDOWN_SENT */ \ + TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \ + /* SCTP_STATE_SHUTDOWN_RECEIVED */ \ + TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \ + /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \ + TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \ +} /* TYPE_SCTP_PRIMITIVE_RECONF */ + /* The primary index for this table is the primitive type. * The secondary index for this table is the state. */ @@ -653,6 +672,7 @@ static const sctp_sm_table_entry_t primitive_event_table[SCTP_NUM_PRIMITIVE_TYPE TYPE_SCTP_PRIMITIVE_SEND, TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT, TYPE_SCTP_PRIMITIVE_ASCONF, + TYPE_SCTP_PRIMITIVE_RECONF, }; #define TYPE_SCTP_OTHER_NO_PENDING_TSN { \ -- 2.20.1