[openib-general] port num in port priv

[Suresh Shelvapille]

Hal:

I am only addressing the process_mad issue here:

 

> >  As a result, it appears like the process_mad function is always called
> with a port number of
> > zero.
> 
> That should be OK. The switch external port it was received on should be
> in the ib_wc as follows:
> 
> struct ib_wc {
>         u64                     wr_id;
>         enum ib_wc_status       status;
>         enum ib_wc_opcode       opcode;
>         u32                     vendor_err;
>         u32                     byte_len;
>         __be32                  imm_data;
>         u32                     qp_num;
>         u32                     src_qp;
>         int                     wc_flags;
>         u16                     pkey_index;
>         u16                     slid;
>         u8                      sl;
>         u8                      dlid_path_bits;
>         u8                      port_num;       /* valid only for DR SMPs
> on switches */
> };
> 
> and that is the one that needs to be used in the DR return path.
> 
[SS]  if we are supposed to get the port num from the ib_wc, in
process_mad(0) I can do that for all SMP methods such as getportinfo()
etc...
But, the ib_wc parameter is null when process_mad is called from
show_pma_counter() function in sysfs.c?

So should I be switching between the port_num parameter vs. sib_wc->port_num
depending on whether ib_wc is NULL or not?


Thanks,
Suri