From: Jan Blunck <jblunck@infradead.org>
To: "Charles (Chas) Williams" <ciwillia@brocade.com>
Cc: dev <dev@dpdk.org>, yongwang@vmware.com
Subject: Re: [dpdk-dev] [PATCH] net/vmxnet3: fix queue size changes
Date: Tue, 14 Mar 2017 17:11:15 +0100 [thread overview]
Message-ID: <CALe+Z00TMtJH2CvsZTDtX289iC5i94ibXVr=EbEKyozzaFd=-g@mail.gmail.com> (raw)
In-Reply-To: <1489444915-3660-1-git-send-email-ciwillia@brocade.com>
On Mon, Mar 13, 2017 at 11:41 PM, Charles (Chas) Williams
<ciwillia@brocade.com> wrote:
> If the user reconfigures the queues size, then the previosly allocated
> memzone may potentially be too small. Instead, always free the old
> memzone and allocate a new one.
>
> Fixes: dfaff37fc46d ("vmxnet3: import new vmxnet3 poll mode driver implementation")
>
> Signed-off-by: Chas Williams <ciwillia@brocade.com>
> ---
> drivers/net/vmxnet3/vmxnet3_rxtx.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> index 6649c3f..104e040 100644
> --- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
> +++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> @@ -893,8 +893,8 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
>
> /*
> * Create memzone for device rings. malloc can't be used as the physical address is
> - * needed. If the memzone is already created, then this function returns a ptr
> - * to the old one.
> + * needed. If the memzone already exists, we free it since it may have been created
> + * with a different size.
> */
> static const struct rte_memzone *
> ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
> @@ -909,7 +909,7 @@ ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
>
> mz = rte_memzone_lookup(z_name);
> if (mz)
> - return mz;
> + rte_memzone_free(mz);
>
> return rte_memzone_reserve_aligned(z_name, ring_size,
> socket_id, 0, VMXNET3_RING_BA_ALIGN);
Chas,
Thanks for hunting this one down. Wouldn't the rte_memzone_free()
better fit into vmxnet3_cmd_ring_release() ?
Also the ring_dma_zone_reserve() could get replaced by
rte_eth_dma_zone_reserve() (see also
http://dpdk.org/dev/patchwork/patch/21432/).
next prev parent reply other threads:[~2017-03-14 16:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-13 22:41 Charles (Chas) Williams
2017-03-14 16:11 ` Jan Blunck [this message]
2017-03-14 16:38 ` Charles (Chas) Williams
2017-03-15 8:18 ` Jan Blunck
2017-03-15 9:45 ` Charles (Chas) Williams
2017-03-15 10:05 ` Jan Blunck
2017-03-15 10:06 ` Charles (Chas) Williams
2017-03-15 12:34 ` Charles (Chas) Williams
2017-03-15 12:35 ` Charles (Chas) Williams
2017-03-15 17:57 ` Yong Wang
2017-03-15 18:30 ` Shrikrishna Khare
2017-03-15 18:19 ` Jan Blunck
2017-03-16 11:38 ` Ferruh Yigit
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