Add BPF_PROG_ARRAY for BPF_MAP_TYPE_PROG_ARRAY

Define a new macro to make it easier to declare a program array.
Also replace BPF_TABLE("prog") in examples and tests with
BPF_PROG_ARRAY.
Signed-off-by: Gary Lin <glin@suse.com>

examples/networking/tunnel_monitor/monitor.c

@@ -17,7 +17,7 @@ struct counters {
 };
 
 BPF_HASH(stats, struct ipkey, struct counters, 1024);
-BPF_TABLE("prog", int, int, parser, 10);
+BPF_PROG_ARRAY(parser, 10);
 
 enum cb_index {
   CB_FLAGS = 0,

src/cc/export/helpers.h

@@ -186,6 +186,9 @@ struct bpf_stacktrace {
 #define BPF_STACK_TRACE(_name, _max_entries) \
   BPF_TABLE("stacktrace", int, struct bpf_stacktrace, _name, _max_entries)
 
+#define BPF_PROG_ARRAY(_name, _max_entries) \
+  BPF_TABLE("prog", u32, u32, _name, _max_entries)
+
 // packet parsing state machine helpers
 #define cursor_advance(_cursor, _len) \
   ({ void *_tmp = _cursor; _cursor += _len; _tmp; })

tests/python/test_brb.c

@@ -22,7 +22,7 @@ typedef struct eth_addr {
 } eth_addr_t;
 
 // Program table definitions for tail calls
-BPF_TABLE("prog", u32, u32, jump, 16);
+BPF_PROG_ARRAY(jump, 16);
 
 // physical endpoint manager (pem) tables which connects to boeht bridge 1 and bridge 2
 // <port_id, bpf_dest>

tests/python/test_call1.c

 // Copyright (c) PLUMgrid, Inc.
 // Licensed under the Apache License, Version 2.0 (the "License")
 
-BPF_TABLE("prog", int, int, jump, 64);
+BPF_PROG_ARRAY(jump, 64);
 BPF_ARRAY(stats, u64, 64);
 
 enum states {

tests/python/test_clang.py

@@ -426,7 +426,7 @@ int many(struct pt_regs *ctx, int a, int b, int c, int d, int e, int f, int g) {
 
     def test_call_macro_arg(self):
         text = """
-BPF_TABLE("prog", u32, u32, jmp, 32);
+BPF_PROG_ARRAY(jmp, 32);
 
 #define JMP_IDX_PIPE (1U << 1)
 
@@ -607,7 +607,7 @@ void do_trace(struct pt_regs *ctx) {
 
     def test_prog_array_delete(self):
         text = """
-BPF_TABLE("prog", int, int, dummy, 256);
+BPF_PROG_ARRAY(dummy, 256);
 """
         b1 = BPF(text=text)
         text = """