2976 remove useless offsetof() macros

*** 28,45 ****
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  #include <sys/ib/clients/of/sol_ofs/sol_ofs_common.h>
  #include <sys/ib/clients/of/rdma/rdma_cm.h>
  #include <sys/ib/clients/of/sol_ofs/sol_ib_cma.h> /* Transport Specific */
  
- #if !defined(offsetof)
- #define offsetof(s, m)          (size_t)(&(((s *)0)->m))
- #endif
  
  #define IS_UDP_CMID(idp)        ((idp)->ps == RDMA_PS_UDP || \
          (idp)->ps == RDMA_PS_IPOIB)
  #define IS_VALID_SOCKADDR(sockaddrp) \
          ((sockaddrp)->sa_family == AF_INET || \
--- 28,43 ----
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
+ #include <sys/sysmacros.h>
  
  #include <sys/ib/clients/of/sol_ofs/sol_ofs_common.h>
  #include <sys/ib/clients/of/rdma/rdma_cm.h>
  #include <sys/ib/clients/of/sol_ofs/sol_ib_cma.h> /* Transport Specific */
  
  
  #define IS_UDP_CMID(idp)        ((idp)->ps == RDMA_PS_UDP || \
          (idp)->ps == RDMA_PS_IPOIB)
  #define IS_VALID_SOCKADDR(sockaddrp) \
          ((sockaddrp)->sa_family == AF_INET || \