From: Xin Long <lucien.xin@gmail.com> To: network dev <netdev@vger.kernel.org>, linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>, Neil Horman <nhorman@tuxdriver.com>, Vlad Yasevich <vyasevich@gmail.com>, davem@davemloft.net Subject: [PATCHv2 net-next 1/5] sctp: add a common helper function to generate stream reconf chunk Date: Sat, 7 Jan 2017 17:42:58 +0800 [thread overview] Message-ID: <f1875fdb7c77e5f7a7fe33a1e1d2554da24901bb.1483781759.git.lucien.xin@gmail.com> (raw) In-Reply-To: <cover.1483781759.git.lucien.xin@gmail.com> In-Reply-To: <cover.1483781759.git.lucien.xin@gmail.com> This patch is to define a common api used to alloc memory and initialize reconf chunk header that described in rfc6525 section 3.1. All reconf chunks will be generated by calling this helper function. Signed-off-by: Xin Long <lucien.xin@gmail.com> --- include/linux/sctp.h | 6 ++++++ net/sctp/sm_make_chunk.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/include/linux/sctp.h b/include/linux/sctp.h index fcb4c36..cdc3b05 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -108,6 +108,7 @@ typedef enum { /* Use hex, as defined in ADDIP sec. 3.1 */ SCTP_CID_ASCONF = 0xC1, SCTP_CID_ASCONF_ACK = 0x80, + SCTP_CID_RECONF = 0x82, } sctp_cid_t; /* enum */ @@ -710,4 +711,9 @@ struct sctp_infox { struct sctp_association *asoc; }; +struct sctp_reconf_chunk { + sctp_chunkhdr_t chunk_hdr; + __u8 params[0]; +} __packed; + #endif /* __LINUX_SCTP_H__ */ diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index a15d824..fd58097 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3526,3 +3526,36 @@ struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc, return retval; } + +/* RE-CONFIG 3.1 (RE-CONFIG chunk) + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Type = 130 | Chunk Flags | Chunk Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ \ + * / Re-configuration Parameter / + * \ \ + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ \ + * / Re-configuration Parameter (optional) / + * \ \ + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +static struct sctp_chunk *sctp_make_reconf( + const struct sctp_association *asoc, + int length) +{ + struct sctp_reconf_chunk *reconf; + struct sctp_chunk *retval; + + retval = sctp_make_control(asoc, SCTP_CID_RECONF, 0, length, + GFP_ATOMIC); + if (!retval) + return NULL; + + reconf = (struct sctp_reconf_chunk *)retval->chunk_hdr; + retval->param_hdr.v = reconf->params; + + return retval; +} -- 2.1.0
WARNING: multiple messages have this Message-ID (diff)
From: Xin Long <lucien.xin@gmail.com> To: network dev <netdev@vger.kernel.org>, linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>, Neil Horman <nhorman@tuxdriver.com>, Vlad Yasevich <vyasevich@gmail.com>, davem@davemloft.net Subject: [PATCHv2 net-next 1/5] sctp: add a common helper function to generate stream reconf chunk Date: Sat, 07 Jan 2017 09:42:58 +0000 [thread overview] Message-ID: <f1875fdb7c77e5f7a7fe33a1e1d2554da24901bb.1483781759.git.lucien.xin@gmail.com> (raw) In-Reply-To: <cover.1483781759.git.lucien.xin@gmail.com> This patch is to define a common api used to alloc memory and initialize reconf chunk header that described in rfc6525 section 3.1. All reconf chunks will be generated by calling this helper function. Signed-off-by: Xin Long <lucien.xin@gmail.com> --- include/linux/sctp.h | 6 ++++++ net/sctp/sm_make_chunk.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/include/linux/sctp.h b/include/linux/sctp.h index fcb4c36..cdc3b05 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -108,6 +108,7 @@ typedef enum { /* Use hex, as defined in ADDIP sec. 3.1 */ SCTP_CID_ASCONF = 0xC1, SCTP_CID_ASCONF_ACK = 0x80, + SCTP_CID_RECONF = 0x82, } sctp_cid_t; /* enum */ @@ -710,4 +711,9 @@ struct sctp_infox { struct sctp_association *asoc; }; +struct sctp_reconf_chunk { + sctp_chunkhdr_t chunk_hdr; + __u8 params[0]; +} __packed; + #endif /* __LINUX_SCTP_H__ */ diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index a15d824..fd58097 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3526,3 +3526,36 @@ struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc, return retval; } + +/* RE-CONFIG 3.1 (RE-CONFIG chunk) + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Type = 130 | Chunk Flags | Chunk Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ \ + * / Re-configuration Parameter / + * \ \ + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ \ + * / Re-configuration Parameter (optional) / + * \ \ + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +static struct sctp_chunk *sctp_make_reconf( + const struct sctp_association *asoc, + int length) +{ + struct sctp_reconf_chunk *reconf; + struct sctp_chunk *retval; + + retval = sctp_make_control(asoc, SCTP_CID_RECONF, 0, length, + GFP_ATOMIC); + if (!retval) + return NULL; + + reconf = (struct sctp_reconf_chunk *)retval->chunk_hdr; + retval->param_hdr.v = reconf->params; + + return retval; +} -- 2.1.0
next prev parent reply other threads:[~2017-01-07 9:43 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-01-07 9:42 [PATCHv2 net-next 0/5] sctp: add support for generating stream reconf chunks Xin Long 2017-01-07 9:42 ` Xin Long 2017-01-07 9:42 ` Xin Long [this message] 2017-01-07 9:42 ` [PATCHv2 net-next 1/5] sctp: add a common helper function to generate stream reconf chunk Xin Long 2017-01-07 9:42 ` [PATCHv2 net-next 2/5] sctp: add support for generating stream reconf ssn reset request chunk Xin Long 2017-01-07 9:42 ` Xin Long 2017-01-07 9:43 ` [PATCHv2 net-next 3/5] sctp: add support for generating stream reconf ssn/tsn " Xin Long 2017-01-07 9:43 ` Xin Long 2017-01-07 9:43 ` [PATCHv2 net-next 4/5] sctp: add support for generating stream reconf response chunk Xin Long 2017-01-07 9:43 ` Xin Long 2017-01-07 9:43 ` [PATCHv2 net-next 5/5] sctp: add support for generating stream reconf add streams request chunk Xin Long 2017-01-07 9:43 ` Xin Long 2017-01-09 12:43 ` [PATCHv2 net-next 0/5] sctp: add support for generating stream reconf chunks Neil Horman 2017-01-09 12:43 ` Neil Horman 2017-01-09 15:53 ` David Miller 2017-01-09 15:53 ` David Miller 2017-01-09 18:27 ` Xin Long 2017-01-09 18:27 ` Xin Long 2017-01-09 18:53 ` David Miller 2017-01-09 18:53 ` David Miller 2017-01-09 19:04 ` Marcelo Ricardo Leitner 2017-01-09 19:04 ` Marcelo Ricardo Leitner
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