netdev - Re: [PATCHv6 net-next 3/6] sctp: add support for generating stream reconf ssn/tsn reset request chunk

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Date:   Thu, 9 Feb 2017 15:56:08 +0800
From:   Xin Long <lucien.xin@...il.com>
To:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:     network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org,
        Neil Horman <nhorman@...driver.com>,
        Vlad Yasevich <vyasevich@...il.com>,
        davem <davem@...emloft.net>
Subject: Re: [PATCHv6 net-next 3/6] sctp: add support for generating stream
 reconf ssn/tsn reset request chunk

On Thu, Feb 9, 2017 at 5:57 AM, Marcelo Ricardo Leitner
<marcelo.leitner@...il.com> wrote:
> On Thu, Feb 09, 2017 at 01:18:17AM +0800, Xin Long wrote:
>> This patch is to define SSN/TSN Reset Request Parameter described
>> in rfc6525 section 4.3.
>>
>> It's also to drop some unnecessary __packed in include/linux/sctp.h.
>
> Oups, extra line in the changelog here.
I've moved the "drop __packed" to patch 1/6, this line should have
been removed.
Hi, David, can you remove this line when applying ?

Thanks.

>
>>
>> Signed-off-by: Xin Long <lucien.xin@...il.com>
>> ---
>>  include/linux/sctp.h     |  5 +++++
>>  include/net/sctp/sm.h    |  2 ++
>>  net/sctp/sm_make_chunk.c | 29 +++++++++++++++++++++++++++++
>>  3 files changed, 36 insertions(+)
>>
>> diff --git a/include/linux/sctp.h b/include/linux/sctp.h
>> index d74fca3..71c0d41 100644
>> --- a/include/linux/sctp.h
>> +++ b/include/linux/sctp.h
>> @@ -737,4 +737,9 @@ struct sctp_strreset_inreq {
>>       __u16 list_of_streams[0];
>>  };
>>
>> +struct sctp_strreset_tsnreq {
>> +     sctp_paramhdr_t param_hdr;
>> +     __u32 request_seq;
>> +};
>> +
>>  #endif /* __LINUX_SCTP_H__ */
>> diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
>> index 430ed13..ac37c17 100644
>> --- a/include/net/sctp/sm.h
>> +++ b/include/net/sctp/sm.h
>> @@ -265,6 +265,8 @@ struct sctp_chunk *sctp_make_strreset_req(
>>                               const struct sctp_association *asoc,
>>                               __u16 stream_num, __u16 *stream_list,
>>                               bool out, bool in);
>> +struct sctp_chunk *sctp_make_strreset_tsnreq(
>> +                             const struct sctp_association *asoc);
>>  void sctp_chunk_assign_tsn(struct sctp_chunk *);
>>  void sctp_chunk_assign_ssn(struct sctp_chunk *);
>>
>> diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
>> index c7d3249..749842a 100644
>> --- a/net/sctp/sm_make_chunk.c
>> +++ b/net/sctp/sm_make_chunk.c
>> @@ -3658,3 +3658,32 @@ struct sctp_chunk *sctp_make_strreset_req(
>>
>>       return retval;
>>  }
>> +
>> +/* RE-CONFIG 4.3 (SSN/TSN RESET ALL)
>> + *   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
>> + *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> + *  |     Parameter Type = 15       |      Parameter Length = 8     |
>> + *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> + *  |         Re-configuration Request Sequence Number              |
>> + *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> + */
>> +struct sctp_chunk *sctp_make_strreset_tsnreq(
>> +                             const struct sctp_association *asoc)
>> +{
>> +     struct sctp_strreset_tsnreq tsnreq;
>> +     __u16 length = sizeof(tsnreq);
>> +     struct sctp_chunk *retval;
>> +
>> +     retval = sctp_make_reconf(asoc, length);
>> +     if (!retval)
>> +             return NULL;
>> +
>> +     tsnreq.param_hdr.type = SCTP_PARAM_RESET_TSN_REQUEST;
>> +     tsnreq.param_hdr.length = htons(length);
>> +     tsnreq.request_seq = htonl(asoc->strreset_outseq);
>> +
>> +     sctp_addto_chunk(retval, sizeof(tsnreq), &tsnreq);
>> +
>> +     return retval;
>> +}
>> --
>> 2.1.0
>>
>> --
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