linux-kernel - RE: [EXTERNAL] Re: [PATCH V7 net] net: mana: Fix MANA VF unload when hardware is

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Message-ID: <PUZP153MB0788A2C4FC7A76D2CDD021BCCC0AA@PUZP153MB0788.APCP153.PROD.OUTLOOK.COM>
Date:   Tue, 1 Aug 2023 18:58:54 +0000
From:   Souradeep Chakrabarti <schakrabarti@...rosoft.com>
To:     Simon Horman <horms@...nel.org>,
        Souradeep Chakrabarti <schakrabarti@...ux.microsoft.com>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        Dexuan Cui <decui@...rosoft.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        Long Li <longli@...rosoft.com>,
        Ajay Sharma <sharmaajay@...rosoft.com>,
        "leon@...nel.org" <leon@...nel.org>,
        "cai.huoqing@...ux.dev" <cai.huoqing@...ux.dev>,
        "ssengar@...ux.microsoft.com" <ssengar@...ux.microsoft.com>,
        vkuznets <vkuznets@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [EXTERNAL] Re: [PATCH V7 net] net: mana: Fix MANA VF unload when
 hardware is



>-----Original Message-----
>From: Simon Horman <horms@...nel.org>
>Sent: Tuesday, August 1, 2023 9:01 PM
>To: Souradeep Chakrabarti <schakrabarti@...ux.microsoft.com>
>Cc: KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
><haiyangz@...rosoft.com>; wei.liu@...nel.org; Dexuan Cui
><decui@...rosoft.com>; davem@...emloft.net; edumazet@...gle.com;
>kuba@...nel.org; pabeni@...hat.com; Long Li <longli@...rosoft.com>; Ajay
>Sharma <sharmaajay@...rosoft.com>; leon@...nel.org;
>cai.huoqing@...ux.dev; ssengar@...ux.microsoft.com; vkuznets
><vkuznets@...hat.com>; tglx@...utronix.de; linux-hyperv@...r.kernel.org;
>netdev@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
>rdma@...r.kernel.org; Souradeep Chakrabarti
><schakrabarti@...rosoft.com>; stable@...r.kernel.org
>Subject: [EXTERNAL] Re: [PATCH V7 net] net: mana: Fix MANA VF unload when
>hardware is
>
>On Tue, Aug 01, 2023 at 05:29:13AM -0700, Souradeep Chakrabarti wrote:
>
>...
>
>Hi Souradeep,
>
>
>> +	for (i = 0; i < apc->num_queues; i++) {
>> +		txq = &apc->tx_qp[i].txq;
>> +		while (skb = skb_dequeue(&txq->pending_skbs)) {
>
>W=1 builds with both clang-16 and gcc-12 complain that they would like an
>extra set of parentheses around an assignment used as a truth value.
Thanks for letting me know. I will fix it in next version.
>
>> +			mana_unmap_skb(skb, apc);
>> +			dev_consume_skb_any(skb);
>> +		}
>> +		atomic_set(&txq->pending_sends, 0);
>> +	}
>>  	/* We're 100% sure the queues can no longer be woken up, because
>>  	 * we're sure now mana_poll_tx_cq() can't be running.
>>  	 */
>> --
>> 2.34.1
>>
>>