Switch saddr/daddr to u32's within tools/tcpconnlat.py (iovisor#1859)

switch some fields from u64 to their natural size u32/u16

tools/tcpconnlat.py

@@ -74,7 +74,7 @@ def positive_float(val):
 
 struct info_t {
  u64 ts;
- u64 pid;
+ u32 pid;
  char task[TASK_COMM_LEN];
 };
 BPF_HASH(start, struct sock *, struct info_t);
@@ -83,23 +83,23 @@ def positive_float(val):
 struct ipv4_data_t {
  // XXX: switch some to u32's when supported
  u64 ts_us;
- u64 pid;
- u64 saddr;
- u64 daddr;
+ u32 pid;
+ u32 saddr;
+ u32 daddr;
  u64 ip;
- u64 dport;
+ u16 dport;
  u64 delta_us;
  char task[TASK_COMM_LEN];
 };
 BPF_PERF_OUTPUT(ipv4_events);
 
 struct ipv6_data_t {
  u64 ts_us;
- u64 pid;
+ u32 pid;
  unsigned __int128 saddr;
  unsigned __int128 daddr;
  u64 ip;
- u64 dport;
+ u16 dport;
  u64 delta_us;
  char task[TASK_COMM_LEN];
 };
@@ -206,23 +206,23 @@ def positive_float(val):
 class Data_ipv4(ct.Structure):
  _fields_ = [
  ("ts_us", ct.c_ulonglong),
- ("pid", ct.c_ulonglong),
- ("saddr", ct.c_ulonglong),
- ("daddr", ct.c_ulonglong),
+ ("pid", ct.c_uint),
+ ("saddr", ct.c_uint),
+ ("daddr", ct.c_uint),
  ("ip", ct.c_ulonglong),
- ("dport", ct.c_ulonglong),
+ ("dport", ct.c_ushort),
  ("delta_us", ct.c_ulonglong),
  ("task", ct.c_char * TASK_COMM_LEN)
  ]
 
 class Data_ipv6(ct.Structure):
  _fields_ = [
  ("ts_us", ct.c_ulonglong),
- ("pid", ct.c_ulonglong),
+ ("pid", ct.c_uint),
  ("saddr", (ct.c_ulonglong * 2)),
  ("daddr", (ct.c_ulonglong * 2)),
  ("ip", ct.c_ulonglong),
- ("dport", ct.c_ulonglong),
+ ("dport", ct.c_ushort),
  ("delta_us", ct.c_ulonglong),
  ("task", ct.c_char * TASK_COMM_LEN)
  ]