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Message-ID: <CADvbK_dLcuW8q_wQosKf0pB8PHV1XQ45L77zHCuMvak1PyQJPg@mail.gmail.com>
Date: Sat, 1 Apr 2017 17:07:03 +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>,
davem <davem@...emloft.net>
Subject: Re: [PATCH net-next] sctp: add SCTP_PR_STREAM_STATUS sockopt for prsctp
On Sat, Apr 1, 2017 at 2:08 AM, Marcelo Ricardo Leitner
<marcelo.leitner@...il.com> wrote:
> On Fri, Mar 31, 2017 at 06:14:09PM +0800, Xin Long wrote:
>> Before when implementing sctp prsctp, SCTP_PR_STREAM_STATUS wasn't
>> added, as it needs to save abandoned_(un)sent for every stream.
>>
>> After sctp stream reconf is added in sctp, assoc has structure
>> sctp_stream_out to save per stream info.
>>
>> This patch is to add SCTP_PR_STREAM_STATUS by putting the prsctp
>> per stream statistics into sctp_stream_out.
>>
>> Signed-off-by: Xin Long <lucien.xin@...il.com>
>> ---
>> include/net/sctp/structs.h | 2 ++
>> include/uapi/linux/sctp.h | 1 +
>> net/sctp/chunk.c | 14 +++++++++--
>> net/sctp/outqueue.c | 10 ++++++++
>> net/sctp/socket.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++
>> 5 files changed, 84 insertions(+), 2 deletions(-)
>>
>> diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
>> index 592dece..3e61a54 100644
>> --- a/include/net/sctp/structs.h
>> +++ b/include/net/sctp/structs.h
>> @@ -1315,6 +1315,8 @@ struct sctp_inithdr_host {
>> struct sctp_stream_out {
>> __u16 ssn;
>> __u8 state;
>> + __u64 abandoned_unsent[SCTP_PR_INDEX(MAX) + 1];
>> + __u64 abandoned_sent[SCTP_PR_INDEX(MAX) + 1];
>> };
>>
>> struct sctp_stream_in {
>> diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h
>> index 7212870..ced9d8b 100644
>> --- a/include/uapi/linux/sctp.h
>> +++ b/include/uapi/linux/sctp.h
>> @@ -115,6 +115,7 @@ typedef __s32 sctp_assoc_t;
>> #define SCTP_PR_SUPPORTED 113
>> #define SCTP_DEFAULT_PRINFO 114
>> #define SCTP_PR_ASSOC_STATUS 115
>> +#define SCTP_PR_STREAM_STATUS 116
>> #define SCTP_RECONFIG_SUPPORTED 117
>> #define SCTP_ENABLE_STREAM_RESET 118
>> #define SCTP_RESET_STREAMS 119
>> diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
>> index e3621cb..697721a 100644
>> --- a/net/sctp/chunk.c
>> +++ b/net/sctp/chunk.c
>> @@ -306,14 +306,24 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
>>
>> if (SCTP_PR_TTL_ENABLED(chunk->sinfo.sinfo_flags) &&
>> time_after(jiffies, chunk->msg->expires_at)) {
>> - if (chunk->sent_count)
>> + struct sctp_stream_out *streamout =
>> + &chunk->asoc->stream->out[chunk->sinfo.sinfo_stream];
>> +
>> + if (chunk->sent_count) {
>> chunk->asoc->abandoned_sent[SCTP_PR_INDEX(TTL)]++;
>> - else
>> + streamout->abandoned_sent[SCTP_PR_INDEX(TTL)]++;
>> + } else {
>> chunk->asoc->abandoned_unsent[SCTP_PR_INDEX(TTL)]++;
>> + streamout->abandoned_unsent[SCTP_PR_INDEX(TTL)]++;
>> + }
>> return 1;
>> } else if (SCTP_PR_RTX_ENABLED(chunk->sinfo.sinfo_flags) &&
>> chunk->sent_count > chunk->sinfo.sinfo_timetolive) {
>> + struct sctp_stream_out *streamout =
>> + &chunk->asoc->stream->out[chunk->sinfo.sinfo_stream];
>> +
>> chunk->asoc->abandoned_sent[SCTP_PR_INDEX(RTX)]++;
>> + streamout->abandoned_sent[SCTP_PR_INDEX(RTX)]++;
>> return 1;
>> } else if (!SCTP_PR_POLICY(chunk->sinfo.sinfo_flags) &&
>> chunk->msg->expires_at &&
>> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
>> index 025ccff..3f78d7f 100644
>> --- a/net/sctp/outqueue.c
>> +++ b/net/sctp/outqueue.c
>> @@ -353,6 +353,8 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc,
>> struct sctp_chunk *chk, *temp;
>>
>> list_for_each_entry_safe(chk, temp, queue, transmitted_list) {
>> + struct sctp_stream_out *streamout;
>> +
>> if (!SCTP_PR_PRIO_ENABLED(chk->sinfo.sinfo_flags) ||
>> chk->sinfo.sinfo_timetolive <= sinfo->sinfo_timetolive)
>> continue;
>> @@ -361,8 +363,10 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc,
>> sctp_insert_list(&asoc->outqueue.abandoned,
>> &chk->transmitted_list);
>>
>> + streamout = &asoc->stream->out[chk->sinfo.sinfo_stream];
>> asoc->sent_cnt_removable--;
>> asoc->abandoned_sent[SCTP_PR_INDEX(PRIO)]++;
>> + streamout->abandoned_sent[SCTP_PR_INDEX(PRIO)]++;
>>
>> if (!chk->tsn_gap_acked) {
>> if (chk->transport)
>> @@ -396,6 +400,12 @@ static int sctp_prsctp_prune_unsent(struct sctp_association *asoc,
>> q->out_qlen -= chk->skb->len;
>> asoc->sent_cnt_removable--;
>> asoc->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
>> + if (chk->sinfo.sinfo_stream < asoc->stream->outcnt) {
>> + struct sctp_stream_out *streamout =
>> + &asoc->stream->out[chk->sinfo.sinfo_stream];
>> +
>> + streamout->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
>> + }
>>
>> msg_len -= SCTP_DATA_SNDSIZE(chk) +
>> sizeof(struct sk_buff) +
>> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
>> index ccc08fc..8c0b528 100644
>> --- a/net/sctp/socket.c
>> +++ b/net/sctp/socket.c
>> @@ -6576,6 +6576,61 @@ static int sctp_getsockopt_pr_assocstatus(struct sock *sk, int len,
>> return retval;
>> }
>>
>> +static int sctp_getsockopt_pr_streamstatus(struct sock *sk, int len,
>> + char __user *optval,
>> + int __user *optlen)
> You're missing an space here -----^
right, will post v2, thanks.
>
> otherwise it lgtm
>
>> +{
>> + struct sctp_stream_out *streamout;
>> + struct sctp_association *asoc;
>> + struct sctp_prstatus params;
>> + int retval = -EINVAL;
>> + int policy;
>> +
>> + if (len < sizeof(params))
>> + goto out;
>> +
>> + len = sizeof(params);
>> + if (copy_from_user(¶ms, optval, len)) {
>> + retval = -EFAULT;
>> + goto out;
>> + }
>> +
>> + policy = params.sprstat_policy;
>> + if (policy & ~SCTP_PR_SCTP_MASK)
>> + goto out;
>> +
>> + asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
>> + if (!asoc || params.sprstat_sid >= asoc->stream->outcnt)
>> + goto out;
>> +
>> + streamout = &asoc->stream->out[params.sprstat_sid];
>> + if (policy == SCTP_PR_SCTP_NONE) {
>> + params.sprstat_abandoned_unsent = 0;
>> + params.sprstat_abandoned_sent = 0;
>> + for (policy = 0; policy <= SCTP_PR_INDEX(MAX); policy++) {
>> + params.sprstat_abandoned_unsent +=
>> + streamout->abandoned_unsent[policy];
>> + params.sprstat_abandoned_sent +=
>> + streamout->abandoned_sent[policy];
>> + }
>> + } else {
>> + params.sprstat_abandoned_unsent =
>> + streamout->abandoned_unsent[__SCTP_PR_INDEX(policy)];
>> + params.sprstat_abandoned_sent =
>> + streamout->abandoned_sent[__SCTP_PR_INDEX(policy)];
>> + }
>> +
>> + if (put_user(len, optlen) || copy_to_user(optval, ¶ms, len)) {
>> + retval = -EFAULT;
>> + goto out;
>> + }
>> +
>> + retval = 0;
>> +
>> +out:
>> + return retval;
>> +}
>> +
>> static int sctp_getsockopt_reconfig_supported(struct sock *sk, int len,
>> char __user *optval,
>> int __user *optlen)
>> @@ -6825,6 +6880,10 @@ static int sctp_getsockopt(struct sock *sk, int level, int optname,
>> retval = sctp_getsockopt_pr_assocstatus(sk, len, optval,
>> optlen);
>> break;
>> + case SCTP_PR_STREAM_STATUS:
>> + retval = sctp_getsockopt_pr_streamstatus(sk, len, optval,
>> + optlen);
>> + break;
>> case SCTP_RECONFIG_SUPPORTED:
>> retval = sctp_getsockopt_reconfig_supported(sk, len, optval,
>> optlen);
>> --
>> 2.1.0
>>
>> --
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