RE: [PATCH v7 1/4] IB/netlink: Add defines for local service requests through netlink

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> From: Hefty, Sean
> Sent: Tuesday, June 30, 2015 1:17 PM
> To: Wan, Kaike; linux-rdma@xxxxxxxxxxxxxxx
> Cc: Wan, Kaike; Fleck, John; Weiny, Ira
> Subject: RE: [PATCH v7 1/4] IB/netlink: Add defines for local service requests
> through netlink
> 
> >  include/uapi/rdma/rdma_netlink.h |   87
> > ++++++++++++++++++++++++++++++++++++++
> >  1 files changed, 87 insertions(+), 0 deletions(-)
> >
> > diff --git a/include/uapi/rdma/rdma_netlink.h
> > b/include/uapi/rdma/rdma_netlink.h
> > index 6e4bb42..d2c50e9 100644
> > --- a/include/uapi/rdma/rdma_netlink.h
> > +++ b/include/uapi/rdma/rdma_netlink.h
> > @@ -7,12 +7,14 @@ enum {
> >  	RDMA_NL_RDMA_CM = 1,
> >  	RDMA_NL_NES,
> >  	RDMA_NL_C4IW,
> > +	RDMA_NL_SA,
> >  	RDMA_NL_NUM_CLIENTS
> >  };
> >
> >  enum {
> >  	RDMA_NL_GROUP_CM = 1,
> >  	RDMA_NL_GROUP_IWPM,
> > +	RDMA_NL_GROUP_LS,
> >  	RDMA_NL_NUM_GROUPS
> >  };
> >
> > @@ -128,5 +130,90 @@ enum {
> >  	IWPM_NLA_ERR_MAX
> >  };
> >
> > +/* Local service group opcodes */
> > +enum {
> > +	RDMA_NL_LS_OP_RESOLVE = 0,
> > +	RDMA_NL_LS_OP_SET_TIMEOUT,
> > +	RDMA_NL_LS_NUM_OPS
> > +};
> > +
> > +/* Local service netlink message flags */
> > +#define RDMA_NL_LS_F_OK		0x0100	/* Success response */
> > +#define RDMA_NL_LS_F_ERR	0x0200	/* Failed response */
> 
> Is there a reason for these odd values?

Yes, the lower byte (0x00xx) is used by generic netlink messages and the higher byte can be used for specific request (eg, RESOLVE).

Kaike

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