netdev - Re: [PATCH net] sctp: out_qlen should be updated when pruning unsent queue

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Date:   Mon, 20 Mar 2017 15:43:11 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Xin Long <lucien.xin@...il.com>
Cc:     network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org,
        davem@...emloft.net, Neil Horman <nhorman@...driver.com>,
        Vlad Yasevich <vyasevich@...il.com>
Subject: Re: [PATCH net] sctp: out_qlen should be updated when pruning unsent
 queue

On Sat, Mar 18, 2017 at 08:03:59PM +0800, Xin Long wrote:
> This patch is to fix the issue that sctp_prsctp_prune_sent forgot
> to update q->out_qlen when removing a chunk from unsent queue.
> 
> Fixes: 8dbdf1f5b09c ("sctp: implement prsctp PRIO policy")
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

> ---
>  net/sctp/outqueue.c | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
> index db352e5..025ccff 100644
> --- a/net/sctp/outqueue.c
> +++ b/net/sctp/outqueue.c
> @@ -382,17 +382,18 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc,
>  }
>  
>  static int sctp_prsctp_prune_unsent(struct sctp_association *asoc,
> -				    struct sctp_sndrcvinfo *sinfo,
> -				    struct list_head *queue, int msg_len)
> +				    struct sctp_sndrcvinfo *sinfo, int msg_len)
>  {
> +	struct sctp_outq *q = &asoc->outqueue;
>  	struct sctp_chunk *chk, *temp;
>  
> -	list_for_each_entry_safe(chk, temp, queue, list) {
> +	list_for_each_entry_safe(chk, temp, &q->out_chunk_list, list) {
>  		if (!SCTP_PR_PRIO_ENABLED(chk->sinfo.sinfo_flags) ||
>  		    chk->sinfo.sinfo_timetolive <= sinfo->sinfo_timetolive)
>  			continue;
>  
>  		list_del_init(&chk->list);
> +		q->out_qlen -= chk->skb->len;
>  		asoc->sent_cnt_removable--;
>  		asoc->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
>  
> @@ -431,9 +432,7 @@ void sctp_prsctp_prune(struct sctp_association *asoc,
>  			return;
>  	}
>  
> -	sctp_prsctp_prune_unsent(asoc, sinfo,
> -				 &asoc->outqueue.out_chunk_list,
> -				 msg_len);
> +	sctp_prsctp_prune_unsent(asoc, sinfo, msg_len);
>  }
>  
>  /* Mark all the eligible packets on a transport for retransmission.  */
> -- 
> 2.1.0
> 
> --
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