libbpf-tools: adjust Kconfig and re-build vmlinux.h

Default v5.5 kernel config doesn't have most of BPF-related functionality
enabled, which leads to vmlinux.h not containing a lot of useful constants.
This patch contains re-generated vmlinux.h from kernel built with default
config plus minimal changes to enable most (all?) BPF-relevant parts of
kernel. Here's a list of added options:

CONFIG_BPF_EVENTS=y
CONFIG_BPFILTER_UMH=m
CONFIG_BPFILTER=y
CONFIG_BPF_JIT=y
CONFIG_BPF_KPROBE_OVERRIDE=y
CONFIG_BPF_STREAM_PARSER=y
CONFIG_BPF_SYSCALL=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
CONFIG_CGROUP_BPF=y
CONFIG_GCC_VERSION=70300
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_IPV6_SEG6_BPF=y
CONFIG_IPV6_SEG6_LWTUNNEL=y
CONFIG_LIBCRC32C=y
CONFIG_LWTUNNEL_BPF=y
CONFIG_LWTUNNEL=y
CONFIG_NET_ACT_BPF=y
CONFIG_NET_CLS_BPF=y
CONFIG_NETFILTER_ADVANCED=y
CONFIG_NETFILTER_XT_MATCH_BPF=y
CONFIG_NET_SOCK_MSG=y
CONFIG_NF_CT_PROTO_DCCP=y
CONFIG_NF_CT_PROTO_SCTP=y
CONFIG_NF_CT_PROTO_UDPLITE=y
CONFIG_SOCK_CGROUP_DATA=y
CONFIG_STREAM_PARSER=y
CONFIG_XDP_SOCKETS_DIAG=y
CONFIG_XDP_SOCKETS=y

To make this vmlinux.h generation process easier for future adjustments (e.g.,
if some of the tools would need types that default config compiles out), check
in used Kconfig along the vmlinux.h itself.

Signed-off-by: Andrii Nakryiko <[email protected]>

Author: anakryiko