pollution: iov_base
void *iov_base; 

pollution: iov_len
size_t iov_len; 

pollution: tv_sec
time_t tv_sec; 

pollution: tv_usec
suseconds_t tv_usec; 

pollution: timeval
struct timeval { time_t tv_sec; suseconds_t tv_usec; }; 

pollution: SO_NO_DDP
#define SO_NO_DDP 0x00008000

pollution: SO_NO_OFFLOAD
#define SO_NO_OFFLOAD 0x00004000

pollution: SO_RERROR
#define SO_RERROR 0x00020000

pollution: SO_REUSEPORT_LB
#define SO_REUSEPORT_LB 0x00010000