diff options
| author |   Cong Wang <cong.wang@bytedance.com> | 2021-03-30 19:32:31 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-04-01 10:56:14 -0700 |
| commit | 8a59f9d1e3d4340659fdfee8879dc09a6f2546e1 (patch) | |
| tree | 22d59950e745c697e01c05b82ed67d7a9536bd88 /net/ipv4/tcp_ipv4.c | |
| parent | sock_map: Introduce BPF_SK_SKB_VERDICT (diff) | |
| download | linux-dev-8a59f9d1e3d4340659fdfee8879dc09a6f2546e1.tar.xz linux-dev-8a59f9d1e3d4340659fdfee8879dc09a6f2546e1.zip | |
sock: Introduce sk->sk_prot->psock_update_sk_prot()
Currently sockmap calls into each protocol to update the struct
proto and replace it. This certainly won't work when the protocol
is implemented as a module, for example, AF_UNIX.
Introduce a new ops sk->sk_prot->psock_update_sk_prot(), so each
protocol can implement its own way to replace the struct proto.
This also helps get rid of symbol dependencies on CONFIG_INET.
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210331023237.41094-11-xiyou.wangcong@gmail.com
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index daad4f99db32..dfc6d1c0e710 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2806,6 +2806,9 @@ struct proto tcp_prot = { .hash = inet_hash, .unhash = inet_unhash, .get_port = inet_csk_get_port, +#ifdef CONFIG_BPF_SYSCALL + .psock_update_sk_prot = tcp_bpf_update_proto, +#endif .enter_memory_pressure = tcp_enter_memory_pressure, .leave_memory_pressure = tcp_leave_memory_pressure, .stream_memory_free = tcp_stream_memory_free, |