diff options
| author | Neal Cardwell <ncardwell@google.com> | 2020-09-10 15:35:34 -0400 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-09-10 20:53:01 -0700 |
| commit | 29a949325c6c90f1431db9af64592275c83d9b2a (patch) | |
| tree | de25fc54a76f1a554ccc2357f6e4b30fb42089b3 /net | |
| parent | e7b10a4dd1b13c8fb8ee1686da7d01437c5da1d2 (diff) | |
tcp: simplify tcp_set_congestion_control(): Always reinitialize
Now that the previous patches ensure that all call sites for
tcp_set_congestion_control() want to initialize congestion control, we
can simplify tcp_set_congestion_control() by removing the reinit
argument and the code to support it.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Kevin Yang <yyd@google.com>
Cc: Lawrence Brakmo <brakmo@fb.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/filter.c | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_cong.c | 11 |
3 files changed, 4 insertions, 12 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 067f6759a68f..e89d6d7da03c 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4451,8 +4451,7 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname, strncpy(name, optval, min_t(long, optlen, TCP_CA_NAME_MAX-1)); name[TCP_CA_NAME_MAX-1] = 0; - ret = tcp_set_congestion_control(sk, name, false, - true, true); + ret = tcp_set_congestion_control(sk, name, false, true); } else { struct inet_connection_sock *icsk = inet_csk(sk); struct tcp_sock *tp = tcp_sk(sk); diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 7360d3db2b61..e58ab9db73ff 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3050,7 +3050,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level, int optname, name[val] = 0; lock_sock(sk); - err = tcp_set_congestion_control(sk, name, true, true, + err = tcp_set_congestion_control(sk, name, true, ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)); release_sock(sk); diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index d18d7a1ce4ce..a9b0fb52a1ec 100644 --- a/net/ipv4/tcp_cong.c +++ b/net/ipv4/tcp_cong.c @@ -341,7 +341,7 @@ out: * already initialized. */ int tcp_set_congestion_control(struct sock *sk, const char *name, bool load, - bool reinit, bool cap_net_admin) + bool cap_net_admin) { struct inet_connection_sock *icsk = inet_csk(sk); const struct tcp_congestion_ops *ca; @@ -365,15 +365,8 @@ int tcp_set_congestion_control(struct sock *sk, const char *name, bool load, if (!ca) { err = -ENOENT; } else if (!load) { - const struct tcp_congestion_ops *old_ca = icsk->icsk_ca_ops; - if (bpf_try_module_get(ca, ca->owner)) { - if (reinit) { - tcp_reinit_congestion_control(sk, ca); - } else { - icsk->icsk_ca_ops = ca; - bpf_module_put(old_ca, old_ca->owner); - } + tcp_reinit_congestion_control(sk, ca); } else { err = -EBUSY; } |