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Re: [Qemu-devel] [PATCH V2] net: don't use set/get_pointer() in set/get_
From: |
Jason Wang |
Subject: |
Re: [Qemu-devel] [PATCH V2] net: don't use set/get_pointer() in set/get_netdev() |
Date: |
Mon, 13 Oct 2014 12:53:46 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 |
On 10/13/2014 11:31 AM, Jason Wang wrote:
> On 10/10/2014 09:03 PM, Markus Armbruster wrote:
>> Jason Wang <address@hidden> writes:
>>
>>> Commit 1ceef9f27359cbe92ef124bf74de6f792e71f6fb (net: multiqueue
>>> support) tries to use set_pointer() and get_pointer() to set and get
>>> NICPeers which is not a pointer defined in DEFINE_PROP_NETDEV. This
>>> trick works but result a unclean and fragile implementation (e.g
>>> print_netdev and parse_netdev).
>>>
>>> This patch solves this issue by not using set/get_pinter() and set and
>>> get netdev directly in set_netdev() and get_netdev(). After this the
>>> parse_netdev() and print_netdev() were no longer used and dropped from
>>> the source.
>>>
>>> Cc: Markus Armbruster <address@hidden>
>>> Cc: Stefan Hajnoczi <address@hidden>
>>> Cc: Peter Maydell <address@hidden>
>>> Signed-off-by: Jason Wang <address@hidden>
>>> ---
>>> Changes from V1:
>>> - validate ncs pointer before accessing them, this fixes the qtest failure
>>> on arm.
>>> ---
>>> hw/core/qdev-properties-system.c | 71
>>> ++++++++++++++++++++++------------------
>>> 1 file changed, 39 insertions(+), 32 deletions(-)
>>>
>>> diff --git a/hw/core/qdev-properties-system.c
>>> b/hw/core/qdev-properties-system.c
>>> index ae0900f..6939ea5 100644
>>> --- a/hw/core/qdev-properties-system.c
>>> +++ b/hw/core/qdev-properties-system.c
>>> @@ -176,41 +176,67 @@ PropertyInfo qdev_prop_chr = {
>>> };
>>>
[...]
>>> goto err;
>>> }
>>>
>>> for (i = 0; i < queues; i++) {
>>> if (peers[i] == NULL) {
>>> - ret = -ENOENT;
>>> + err = -ENOENT;
>>> goto err;
>>> }
>>>
>>> if (peers[i]->peer) {
>>> - ret = -EEXIST;
>>> + err = -EEXIST;
>>> goto err;
>>> }
>>>
>>> if (ncs[i]) {
>>> - ret = -EINVAL;
>>> + err = -EINVAL;
>> error_set_from_qdev_prop_error() does not accept -EINVAL, either.
> Ok.
Just have a check, error_set_from_qdev_prop_error() can accept -EINVAL,
so I will only call error_setg() directly for -E2BIG.