netdev - Re: [PATCH net-next] net/bridge: Enable bridge also when switchdev can't be built

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Date:	Wed, 13 May 2015 17:47:44 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Scott Feldman <sfeldma@...il.com>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>,
	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net/bridge: Enable bridge also when switchdev
 can't be built

Wed, May 13, 2015 at 05:44:11PM CEST, sfeldma@...il.com wrote:
>On Wed, May 13, 2015 at 3:08 AM, Or Gerlitz <ogerlitz@...lanox.com> wrote:
>> Currently switchdev doesn't build on older gcc version such as 4.4.6
>>
>> The reason for the compile error is such that it causes a failure
>> to build the bridge too, even when switchdev isn't configured (the
>> stub isn't enough), fix it.
>>
>> CC [M]  net/bridge/br_stp.o
>> net/bridge/br_stp.c: In function 'br_set_state':
>> net/bridge/br_stp.c:44: error: unknown field 'stp_state' specified in initializer
>>
>> Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
>> ---
>>  net/bridge/br_stp.c |    4 +++-
>>  1 files changed, 3 insertions(+), 1 deletions(-)
>>
>> diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
>> index b9300da..752783a 100644
>> --- a/net/bridge/br_stp.c
>> +++ b/net/bridge/br_stp.c
>> @@ -39,17 +39,19 @@ void br_log_state(const struct net_bridge_port *p)
>>
>>  void br_set_state(struct net_bridge_port *p, unsigned int state)
>>  {
>> +#ifdef CONFIG_NET_SWITCHDEV
>>         struct switchdev_attr attr = {
>>                 .id = SWITCHDEV_ATTR_PORT_STP_STATE,
>>                 .stp_state = state,
>>         };
>>         int err;
>>
>> -       p->state = state;
>>         err = switchdev_port_attr_set(p->dev, &attr);
>>         if (err && err != -EOPNOTSUPP)
>>                 br_warn(p->br, "error setting offload STP state on port %u(%s)\n",
>>                                 (unsigned int) p->port_no, p->dev->name);
>> +#endif
>> +       p->state = state;
>>  }
>
>Isn't this the same issue with anonymous unions and older gcc?

I believe it is
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