libbpf-tools: update bpftool and fix .rodata hack

Update bpftool to the latest version, handing const volatile arrays properly when generating BPF skeletons. Fix tcpconnect tool hack to work around that issue. Signed-off-by: Andrii Nakryiko <[email protected]>
iovisor · Jul 22, 2020 · a02663b · a02663b
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commit a02663b
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diff --git a/libbpf-tools/bin/bpftool b/libbpf-tools/bin/bpftool
diff --git a/libbpf-tools/tcpconnect.bpf.c b/libbpf-tools/tcpconnect.bpf.c
@@ -13,7 +13,7 @@
 
 const volatile bool do_count;
 const volatile int filter_ports_len;
-SEC(".rodata") int filter_ports[MAX_PORTS];
+const volatile int filter_ports[MAX_PORTS];
 const volatile pid_t filter_pid;
 const volatile uid_t filter_uid = -1;