DPDK patches and discussions
 help / color / mirror / Atom feed
From: Linhaifeng <haifeng.lin@huawei.com>
To: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost:fix can't send packet anymore after mempool is full again
Date: Fri, 20 Mar 2015 14:36:07 +0800
Message-ID: <550BBFD7.6030206@huawei.com> (raw)
In-Reply-To: <1426823642-27360-1-git-send-email-haifeng.lin@huawei.com>



On 2015/3/20 11:54, linhaifeng wrote:
> From: Linhaifeng <haifeng.lin@huawei.com>
> 
> When failed to malloc buffer from mempool we just update last_used_idx but
> not used->idx so after many times vhost thought have handle all packets
> but virtio_net thought vhost have not handle all packets and will not
> update avail->idx.
> 
> Signed-off-by: Linhaifeng <haifeng.lin@huawei.com>
> ---
>  lib/librte_vhost/vhost_rxtx.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
> index 535c7a1..93a8fff 100644
> --- a/lib/librte_vhost/vhost_rxtx.c
> +++ b/lib/librte_vhost/vhost_rxtx.c
> @@ -609,7 +609,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
>  		if (unlikely(m == NULL)) {
>  			RTE_LOG(ERR, VHOST_DATA,
>  				"Failed to allocate memory for mbuf.\n");
> -			return entry_success;
> +			goto finish;

or use 'break' replace of 'goto' ?

>  		}
>  		seg_offset = 0;
>  		seg_avail = m->buf_len - RTE_PKTMBUF_HEADROOM;
> @@ -721,6 +721,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
>  		entry_success++;
>  	}
>  
> +finish:
>  	rte_compiler_barrier();
>  	vq->used->idx += entry_success;
>  	/* Kick guest if required. */
> 

-- 
Regards,
Haifeng

  reply	other threads:[~2015-03-20  6:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-20  3:54 linhaifeng
2015-03-20  6:36 ` Linhaifeng [this message]
2015-03-20  7:28   ` Ouyang, Changchun
2015-03-21  3:58     ` Linhaifeng

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=550BBFD7.6030206@huawei.com \
    --to=haifeng.lin@huawei.com \
    --cc=dev@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK patches and discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git