netdev - Re: [RFC v1 10/19] RDMA/irdma: Add connection manager

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Date:   Mon, 25 Feb 2019 11:46:29 -0700
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Gal Pressman <galpress@...zon.com>
Cc:     Shiraz Saleem <shiraz.saleem@...el.com>, dledford@...hat.com,
        davem@...emloft.net, linux-rdma@...r.kernel.org,
        netdev@...r.kernel.org, mustafa.ismail@...el.com,
        jeffrey.t.kirsher@...el.com
Subject: Re: [RFC v1 10/19] RDMA/irdma: Add connection manager

On Sun, Feb 24, 2019 at 01:21:16PM +0200, Gal Pressman wrote:
> On 15-Feb-19 19:10, Shiraz Saleem wrote:
> > +/**
> > + * irdma_cm_teardown_connections - teardown QPs
> > + * @iwdev: device pointer
> > + * @ipaddr: Pointer to IPv4 or IPv6 address
> > + * @ipv4: flag indicating IPv4 when true
> 
> There is no ipv4 parameter.

Be sure to run code through make W=1 - it runs stuff that checks the
kdocs.

> > +	INIT_LIST_HEAD(&teardown_list);
> > +	for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) {
> > +		spin_lock_irqsave(&vsi->qos[i].lock, flags);
> > +		list_for_each_safe(list_node, list_core_temp, &vsi->qos[i].qplist) {
> > +			u32 qp_ip[4];
> > +
> > +			sc_qp = container_of(list_node, struct irdma_sc_qp, list);
> > +			if (sc_qp->qp_type != IRDMA_QP_TYPE_ROCE_RC)
> > +				continue;
> > +
> > +			qp = sc_qp->back_qp;
> > +			if (!disconnect_all) {
> > +				if (nfo->ipv4)
> > +					qp_ip[0] = qp->udp_info.local_ipaddr3;
> > +				else
> > +					memcpy(qp_ip,
> > +					       &qp->udp_info.local_ipaddr0,
> > +					       sizeof(qp_ip));
> > +			}
> > +
> > +			if (disconnect_all ||
> > +			    (nfo->vlan_id == qp->udp_info.vlan_tag &&
> > +			    !memcmp(qp_ip, ipaddr, nfo->ipv4 ? 4 : 16))) {
> > +				spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
> 
> You should use different 'flags' here.

If irqs are already proven disabled it is just spin_lock, right?

Jason