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>,
davem@davemloft.net
Subject: [PATCH net-next 21/27] sctp: add rfc6525 section 5.2.3
Date: Sun, 01 Jan 2017 11:20:38 +0000 [thread overview]
Message-ID: <c59df697bb54348de10f8418a23e9d14bce30135.1483269426.git.lucien.xin@gmail.com> (raw)
In-Reply-To: <b5eb3a199dded2efe517b19b5cac6ae498a6c0c8.1483269426.git.lucien.xin@gmail.com>
This patch is to implement Receiver-Side Procedures for the Incoming
SSN Reset Request Parameter described in section 5.2.3.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
---
include/net/sctp/sm.h | 4 ++++
net/sctp/stream.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+)
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 1833215..180d017 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -285,6 +285,10 @@ struct sctp_chunk *sctp_process_strreset_outreq(
struct sctp_association *asoc,
union sctp_params param,
struct sctp_ulpevent **evp);
+struct sctp_chunk *sctp_process_strreset_inreq(
+ struct sctp_association *asoc,
+ union sctp_params param,
+ struct sctp_ulpevent **evp);
/* Prototypes for statetable processing. */
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 1d5b795..3053d06 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -144,3 +144,66 @@ struct sctp_chunk *sctp_process_strreset_outreq(
out:
return sctp_make_strreset_resp(asoc, result, request_seq);
}
+
+struct sctp_chunk *sctp_process_strreset_inreq(
+ struct sctp_association *asoc,
+ union sctp_params param,
+ struct sctp_ulpevent **evp)
+{
+ struct sctp_strreset_inreq *inreq = param.v;
+ __u32 result = SCTP_STRRESET_DENIED;
+ struct sctp_chunk *chunk = NULL;
+ __u16 i, nums, *str_p;
+ __u32 request_seq;
+
+ request_seq = ntohl(inreq->request_seq);
+ if (request_seq > asoc->strreset_inseq) {
+ result = SCTP_STRRESET_ERR_BAD_SEQNO;
+ goto out;
+ } else if (request_seq = asoc->strreset_inseq) {
+ asoc->strreset_inseq++;
+ }
+
+ if (!(asoc->strreset_enable & SCTP_ENABLE_RESET_STREAM_REQ))
+ goto out;
+
+ if (asoc->strreset_outstanding) {
+ result = SCTP_STRRESET_ERR_IN_PROGRESS;
+ goto out;
+ }
+
+ nums = (ntohs(param.p->length) - sizeof(*inreq)) / 2;
+ str_p = inreq->list_of_streams;
+ for (i = 0; i < nums; i++) {
+ str_p[i] = ntohs(str_p[i]);
+ if (str_p[i] >= asoc->streamoutcnt) {
+ result = SCTP_STRRESET_ERR_WRONG_SSN;
+ goto out;
+ }
+ }
+
+ chunk = sctp_make_strreset_req(asoc, nums, str_p, 1, 0);
+ if (!chunk)
+ goto out;
+
+ if (nums)
+ for (i = 0; i < nums; i++)
+ asoc->streamout[str_p[i]].state + SCTP_STREAM_CLOSED;
+ else
+ for (i = 0; i < asoc->streamoutcnt; i++)
+ asoc->streamout[i].state = SCTP_STREAM_CLOSED;
+
+ asoc->strreset_chunk = chunk;
+ asoc->strreset_outstanding = 1;
+ sctp_chunk_hold(asoc->strreset_chunk);
+
+ *evp = sctp_ulpevent_make_stream_reset_event(asoc,
+ SCTP_STREAM_RESET_INCOMING_SSN, nums, str_p, GFP_ATOMIC);
+
+out:
+ if (!chunk)
+ chunk = sctp_make_strreset_resp(asoc, result, request_seq);
+
+ return chunk;
+}
--
2.1.0
next prev parent reply other threads:[~2017-01-01 11:20 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-01 11:20 [PATCH net-next 00/27] sctp: implement rfc6525 sctp stream reconf Xin Long
2017-01-01 11:20 ` [PATCH net-next 01/27] sctp: add stream arrays in asoc Xin Long
2017-01-01 11:20 ` [PATCH net-next 02/27] sctp: replace ssnmap with asoc stream arrays Xin Long
2017-01-01 11:20 ` [PATCH net-next 03/27] sctp: remove asoc ssnmap and ssnmap.c Xin Long
2017-01-01 11:20 ` [PATCH net-next 04/27] sctp: add rfc6525 section 3.1 Xin Long
2017-01-01 11:20 ` [PATCH net-next 05/27] sctp: add rfc6525 section 4.1-4.2 Xin Long
2017-01-01 11:20 ` [PATCH net-next 06/27] sctp: add rfc6525 section 4.3 Xin Long
2017-01-01 11:20 ` [PATCH net-next 07/27] sctp: add rfc6525 section 4.4 Xin Long
2017-01-01 11:20 ` [PATCH net-next 08/27] sctp: add rfc6525 section 4.5-4.6 Xin Long
2017-01-01 11:20 ` [PATCH net-next 09/27] sctp: add stream reconf timer Xin Long
2017-01-01 11:20 ` [PATCH net-next 10/27] sctp: add stream reconf primitive Xin Long
2017-01-01 11:20 ` [PATCH net-next 11/27] sctp: add reconf_enable in asoc ep and netns Xin Long
2017-01-01 11:20 ` [PATCH net-next 12/27] sctp: add get and set sockopt for reconf_enable Xin Long
2017-01-01 11:20 ` [PATCH net-next 13/27] sctp: add rfc6525 section 6.3.1 Xin Long
2017-01-01 11:20 ` [PATCH net-next 14/27] sctp: add rfc6525 section 5.1.2-5.1.3 and 6.3.2 Xin Long
2017-01-01 11:20 ` [PATCH net-next 15/27] sctp: add rfc6525 section 5.1.4 and 6.3.3 Xin Long
2017-01-01 11:20 ` [PATCH net-next 16/27] sctp: add rfc6525 section 5.1.5-5.1.6 and 6.3.4 Xin Long
2017-01-01 11:20 ` [PATCH net-next 17/27] sctp: add rfc6525 section 6.1.1 Xin Long
2017-01-01 11:20 ` [PATCH net-next 18/27] sctp: add rfc6525 section 6.1.2 Xin Long
2017-01-01 11:20 ` [PATCH net-next 19/27] sctp: add rfc6525 section 6.1.3 Xin Long
2017-01-01 11:20 ` [PATCH net-next 20/27] sctp: add rfc6525 section 5.2.2 Xin Long
2017-01-01 11:20 ` Xin Long [this message]
2017-01-01 11:20 ` [PATCH net-next 22/27] sctp: add rfc6525 section 5.2.4 Xin Long
2017-01-01 11:20 ` [PATCH net-next 23/27] sctp: add rfc6525 section 5.2.5 Xin Long
2017-01-01 11:20 ` [PATCH net-next 24/27] sctp: add rfc6525 section 5.2.6 Xin Long
2017-01-01 11:20 ` [PATCH net-next 25/27] sctp: add rfc6525 section 5.2.7 Xin Long
2017-01-01 11:20 ` [PATCH net-next 26/27] sctp: add sctp reconf chunk process Xin Long
2017-01-01 11:20 ` [PATCH net-next 27/27] sctp: add reconf chunk event Xin Long
2017-01-01 12:14 ` [PATCH net-next 22/27] sctp: add rfc6525 section 5.2.4 kbuild test robot
2017-01-01 13:26 ` Xin Long
2017-01-01 16:32 ` David Miller
2017-01-02 13:43 ` Xin Long
2017-01-01 12:02 ` [PATCH net-next 20/27] sctp: add rfc6525 section 5.2.2 kbuild test robot
2017-01-01 13:23 ` Xin Long
2017-01-01 11:32 ` [PATCH net-next 00/27] sctp: implement rfc6525 sctp stream reconf Xin Long
2017-01-01 16:30 ` David Miller
2017-01-02 13:42 ` Xin Long
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