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bpf: Make btf_sock_ids global

tcp and udp bpf_iter can reuse some socket ids in btf_sock_ids, so make it global. I put the extern definition in btf_ids.h as a central place so it can be easily discovered by developers.

Yonghong Song committed 6 years ago

Commit fce557b1 parent 0f12e583 files · +62 −28Browse files

Showing the changes to include/linux (1 of 3 files). Show all

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include/linux/btf_ids.h+30−0
@@ -97,4 +97,34 @@ asm( \ · 96 unmodified lines
97 97
98#endif /* CONFIG_DEBUG_INFO_BTF */98#endif /* CONFIG_DEBUG_INFO_BTF */
99 99
100#ifdef CONFIG_NET
101/* Define a list of socket types which can be the argument for
102 * skc_to_*_sock() helpers. All these sockets should have
103 * sock_common as the first argument in its memory layout.
104 */
105#define BTF_SOCK_TYPE_xxx \
106 BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET, inet_sock) \
107 BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_CONN, inet_connection_sock) \
108 BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_REQ, inet_request_sock) \
109 BTF_SOCK_TYPE(BTF_SOCK_TYPE_INET_TW, inet_timewait_sock) \
110 BTF_SOCK_TYPE(BTF_SOCK_TYPE_REQ, request_sock) \
111 BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCK, sock) \
112 BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCK_COMMON, sock_common) \
113 BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP, tcp_sock) \
114 BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP_REQ, tcp_request_sock) \
115 BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP_TW, tcp_timewait_sock) \
116 BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP6, tcp6_sock) \
117 BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP, udp_sock) \
118 BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP6, udp6_sock)
119
120enum {
121#define BTF_SOCK_TYPE(name, str) name,
122BTF_SOCK_TYPE_xxx
123#undef BTF_SOCK_TYPE
124MAX_BTF_SOCK_TYPE,
125};
126
127extern u32 btf_sock_ids[];
128#endif
129
100#endif130#endif