> On 11/4/2011 9:08 AM, Hefty, Sean wrote:
> > +static struct idr *cma_select_ib_ps(struct rdma_id_private *id_priv)
> > +{
> > + struct idr *ps = NULL;
> > + struct sockaddr_ib *sib;
> > + u64 sid_ps, mask, sid;
> > +
> > + sib = (struct sockaddr_ib *)&id_priv->id.route.addr.src_addr;
> > + mask = be64_to_cpu(sib->sib_sid_mask)& RDMA_IB_IP_PS_MASK;
> > + sid = be64_to_cpu(sib->sib_sid)& mask;
> > +
> > + if ((id_priv->id.ps == RDMA_PS_IB)&& (sid == (RDMA_IB_IP_PS_IB&
> mask))) {
> > + sid_ps = RDMA_IB_IP_PS_IB;
> > + ps =&ib_ps;
> > + } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps ==
> RDMA_PS_TCP))&&
> > + (sid == (RDMA_IB_IP_PS_TCP& mask))) {
> > + sid_ps = RDMA_IB_IP_PS_TCP;
> > + ps =&tcp_ps;
> > + } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps ==
> RDMA_PS_UDP))&&
> > + (sid == (RDMA_IB_IP_PS_UDP& mask))) {
> > + sid_ps = RDMA_IB_IP_PS_UDP;
> > + ps =&udp_ps;
> > }
>
> I see here some relation between PS_IB to PS_TCP and PS_UDP, isn't a
> similar interaction is needed with PS_IPOIB?
I don't believe so. The RDMA IP CM service uses service ID's that share a
prefix range of 0x0000000001. The IPOIB and SDP service ID's fall outside of
that range. In fact, does PS_IPOIB even have a SID range?
> > --- a/include/rdma/rdma_cm.h
> > +++ b/include/rdma/rdma_cm.h
> > @@ -70,6 +70,11 @@ enum rdma_port_space {
> > RDMA_PS_UDP = 0x0111,
> > };
> >
> > +#define RDMA_IB_IP_PS_MASK 0xFFFFFFFFFFFF0000ULL
> > +#define RDMA_IB_IP_PS_TCP 0x0000000001060000ULL
> > +#define RDMA_IB_IP_PS_UDP 0x0000000001110000ULL
> > +#define RDMA_IB_IP_PS_IB 0x00000000013F0000ULL
>
> so 0x3f here in RDMA_IB_IP_PS_IB stand's for IANA's "any local network",
> correct?
yes - that seemed the best option and what xrc uses.
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