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| author | Geliang Tang <geliang.tang@suse.com> | 2022-05-20 02:30:10 +0300 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2022-05-21 01:29:00 +0300 |
| commit | 3bc253c2e652cf5f12cd8c00d80d8ec55d67d1a7 (patch) | |
| tree | d5a148b96341eef26393448300dc927ee298a84b /include/net | |
| parent | 7aa424e02a04bba5ecc84afe9b58b16e9e0b34f8 (diff) | |
| download | linux-3bc253c2e652cf5f12cd8c00d80d8ec55d67d1a7.tar.xz | |
bpf: Add bpf_skc_to_mptcp_sock_proto
This patch implements a new struct bpf_func_proto, named
bpf_skc_to_mptcp_sock_proto. Define a new bpf_id BTF_SOCK_TYPE_MPTCP,
and a new helper bpf_skc_to_mptcp_sock(), which invokes another new
helper bpf_mptcp_sock_from_subflow() in net/mptcp/bpf.c to get struct
mptcp_sock from a given subflow socket.
v2: Emit BTF type, add func_id checks in verifier.c and bpf_trace.c,
remove build check for CONFIG_BPF_JIT
v5: Drop EXPORT_SYMBOL (Martin)
Co-developed-by: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220519233016.105670-2-mathew.j.martineau@linux.intel.com
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mptcp.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/mptcp.h b/include/net/mptcp.h index 8b1afd6f5cc4..2ba09de955c7 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -284,4 +284,10 @@ static inline int mptcpv6_init(void) { return 0; } static inline void mptcpv6_handle_mapped(struct sock *sk, bool mapped) { } #endif +#if defined(CONFIG_MPTCP) && defined(CONFIG_BPF_SYSCALL) +struct mptcp_sock *bpf_mptcp_sock_from_subflow(struct sock *sk); +#else +static inline struct mptcp_sock *bpf_mptcp_sock_from_subflow(struct sock *sk) { return NULL; } +#endif + #endif /* __NET_MPTCP_H */ |