[openib-general] user-mode data strucures

[Roland Dreier]

    Tom> In working with the Intel compilers recently, however, I've
    Tom> found that this compiler attempts to align data structures on
    Tom> boundaries that are native to the data types. So uint64_t's
    Tom> are aligned on a 64b boundary.  This is an issue for
    Tom> ibv_recv_wr and ibv_send_wr because they are immediately
    Tom> preceded by a *next ptr which is 32b on 32b architectures.

Ugh.

How about swapping wr_id and next in the ibv_recv_wr and ibv_send_wr
structures?  I hate adding __attribute__((packed)) because it ruins
things on ia64 et al.

 - R.