* [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header
@ 2020-05-27 19:58 Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 2/3] tcp: add keepalive_time_set helper Dmitry Yakunin
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Dmitry Yakunin @ 2020-05-27 19:58 UTC (permalink / raw)
To: davem, brakmo, eric.dumazet; +Cc: kafai, bpf, netdev
This is preparation for usage in bpf_setsockopt.
Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
Acked-by: Martin KaFai Lau <kafai@fb.com>
---
include/net/sock.h | 9 +++++++++
net/core/sock.c | 9 ---------
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/include/net/sock.h b/include/net/sock.h
index 3e8c6d4..ee35dea 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -879,6 +879,15 @@ static inline void sock_reset_flag(struct sock *sk, enum sock_flags flag)
__clear_bit(flag, &sk->sk_flags);
}
+static inline void sock_valbool_flag(struct sock *sk, enum sock_flags bit,
+ int valbool)
+{
+ if (valbool)
+ sock_set_flag(sk, bit);
+ else
+ sock_reset_flag(sk, bit);
+}
+
static inline bool sock_flag(const struct sock *sk, enum sock_flags flag)
{
return test_bit(flag, &sk->sk_flags);
diff --git a/net/core/sock.c b/net/core/sock.c
index fd85e65..9836b01 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -684,15 +684,6 @@ static int sock_getbindtodevice(struct sock *sk, char __user *optval,
return ret;
}
-static inline void sock_valbool_flag(struct sock *sk, enum sock_flags bit,
- int valbool)
-{
- if (valbool)
- sock_set_flag(sk, bit);
- else
- sock_reset_flag(sk, bit);
-}
-
bool sk_mc_loop(struct sock *sk)
{
if (dev_recursion_level())
--
2.7.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH bpf-next v2 2/3] tcp: add keepalive_time_set helper
2020-05-27 19:58 [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Dmitry Yakunin
@ 2020-05-27 19:58 ` Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 3/3] bpf: add SO_KEEPALIVE and related options to bpf_setsockopt Dmitry Yakunin
2020-06-01 20:32 ` [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Alexei Starovoitov
2 siblings, 0 replies; 5+ messages in thread
From: Dmitry Yakunin @ 2020-05-27 19:58 UTC (permalink / raw)
To: davem, brakmo, eric.dumazet; +Cc: kafai, bpf, netdev
This is preparation for usage in bpf_setsockopt.
v2:
- change first parameter type to struct sock (Eric Dumazet)
Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
Acked-by: Martin KaFai Lau <kafai@fb.com>
---
include/net/tcp.h | 18 ++++++++++++++++++
net/ipv4/tcp.c | 15 ++-------------
2 files changed, 20 insertions(+), 13 deletions(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index b681338..e0a815f 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1465,6 +1465,24 @@ static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)
tcp_jiffies32 - tp->rcv_tstamp);
}
+/* val must be validated at the top level function */
+static inline void keepalive_time_set(struct sock *sk, int val)
+{
+ struct tcp_sock *tp = tcp_sk(sk);
+
+ tp->keepalive_time = val * HZ;
+ if (sock_flag(sk, SOCK_KEEPOPEN) &&
+ !((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) {
+ u32 elapsed = keepalive_time_elapsed(tp);
+
+ if (tp->keepalive_time > elapsed)
+ elapsed = tp->keepalive_time - elapsed;
+ else
+ elapsed = 0;
+ inet_csk_reset_keepalive_timer(sk, elapsed);
+ }
+}
+
static inline int tcp_fin_time(const struct sock *sk)
{
int fin_timeout = tcp_sk(sk)->linger2 ? : sock_net(sk)->ipv4.sysctl_tcp_fin_timeout;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9700649..a366ab7 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3003,19 +3003,8 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
case TCP_KEEPIDLE:
if (val < 1 || val > MAX_TCP_KEEPIDLE)
err = -EINVAL;
- else {
- tp->keepalive_time = val * HZ;
- if (sock_flag(sk, SOCK_KEEPOPEN) &&
- !((1 << sk->sk_state) &
- (TCPF_CLOSE | TCPF_LISTEN))) {
- u32 elapsed = keepalive_time_elapsed(tp);
- if (tp->keepalive_time > elapsed)
- elapsed = tp->keepalive_time - elapsed;
- else
- elapsed = 0;
- inet_csk_reset_keepalive_timer(sk, elapsed);
- }
- }
+ else
+ keepalive_time_set(sk, val);
break;
case TCP_KEEPINTVL:
if (val < 1 || val > MAX_TCP_KEEPINTVL)
--
2.7.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH bpf-next v2 3/3] bpf: add SO_KEEPALIVE and related options to bpf_setsockopt
2020-05-27 19:58 [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 2/3] tcp: add keepalive_time_set helper Dmitry Yakunin
@ 2020-05-27 19:58 ` Dmitry Yakunin
2020-06-01 20:32 ` [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Alexei Starovoitov
2 siblings, 0 replies; 5+ messages in thread
From: Dmitry Yakunin @ 2020-05-27 19:58 UTC (permalink / raw)
To: davem, brakmo, eric.dumazet; +Cc: kafai, bpf, netdev
This patch adds support of SO_KEEPALIVE flag and TCP related options
to bpf_setsockopt() routine. This is helpful if we want to enable or tune
TCP keepalive for applications which don't do it in the userspace code.
Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
Acked-by: Martin KaFai Lau <kafai@fb.com>
---
net/core/filter.c | 39 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 38 insertions(+), 1 deletion(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index a6fc234..f125f9d 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4248,8 +4248,8 @@ static const struct bpf_func_proto bpf_get_socket_uid_proto = {
static int _bpf_setsockopt(struct sock *sk, int level, int optname,
char *optval, int optlen, u32 flags)
{
+ int val, valbool;
int ret = 0;
- int val;
if (!sk_fullsock(sk))
return -EINVAL;
@@ -4260,6 +4260,7 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname,
if (optlen != sizeof(int))
return -EINVAL;
val = *((int *)optval);
+ valbool = val ? 1 : 0;
/* Only some socketops are supported */
switch (optname) {
@@ -4298,6 +4299,11 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname,
sk_dst_reset(sk);
}
break;
+ case SO_KEEPALIVE:
+ if (sk->sk_prot->keepalive)
+ sk->sk_prot->keepalive(sk, valbool);
+ sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool);
+ break;
default:
ret = -EINVAL;
}
@@ -4358,6 +4364,7 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname,
ret = tcp_set_congestion_control(sk, name, false,
reinit, true);
} else {
+ struct inet_connection_sock *icsk = inet_csk(sk);
struct tcp_sock *tp = tcp_sk(sk);
if (optlen != sizeof(int))
@@ -4386,6 +4393,36 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname,
else
tp->save_syn = val;
break;
+ case TCP_KEEPIDLE:
+ if (val < 1 || val > MAX_TCP_KEEPIDLE)
+ ret = -EINVAL;
+ else
+ keepalive_time_set(sk, val);
+ break;
+ case TCP_KEEPINTVL:
+ if (val < 1 || val > MAX_TCP_KEEPINTVL)
+ ret = -EINVAL;
+ else
+ tp->keepalive_intvl = val * HZ;
+ break;
+ case TCP_KEEPCNT:
+ if (val < 1 || val > MAX_TCP_KEEPCNT)
+ ret = -EINVAL;
+ else
+ tp->keepalive_probes = val;
+ break;
+ case TCP_SYNCNT:
+ if (val < 1 || val > MAX_TCP_SYNCNT)
+ ret = -EINVAL;
+ else
+ icsk->icsk_syn_retries = val;
+ break;
+ case TCP_USER_TIMEOUT:
+ if (val < 0)
+ ret = -EINVAL;
+ else
+ icsk->icsk_user_timeout = val;
+ break;
default:
ret = -EINVAL;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header
2020-05-27 19:58 [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 2/3] tcp: add keepalive_time_set helper Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 3/3] bpf: add SO_KEEPALIVE and related options to bpf_setsockopt Dmitry Yakunin
@ 2020-06-01 20:32 ` Alexei Starovoitov
2020-06-01 21:52 ` Alexei Starovoitov
2 siblings, 1 reply; 5+ messages in thread
From: Alexei Starovoitov @ 2020-06-01 20:32 UTC (permalink / raw)
To: Dmitry Yakunin
Cc: David S. Miller, Lawrence Brakmo, Eric Dumazet, Martin KaFai Lau,
bpf, Network Development
On Wed, May 27, 2020 at 1:00 PM Dmitry Yakunin <zeil@yandex-team.ru> wrote:
>
> This is preparation for usage in bpf_setsockopt.
>
> Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
> Acked-by: Martin KaFai Lau <kafai@fb.com>
Applied the set. Thanks
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header
2020-06-01 20:32 ` [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Alexei Starovoitov
@ 2020-06-01 21:52 ` Alexei Starovoitov
0 siblings, 0 replies; 5+ messages in thread
From: Alexei Starovoitov @ 2020-06-01 21:52 UTC (permalink / raw)
To: Dmitry Yakunin
Cc: David S. Miller, Lawrence Brakmo, Eric Dumazet, Martin KaFai Lau,
bpf, Network Development
On Mon, Jun 1, 2020 at 1:32 PM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
> On Wed, May 27, 2020 at 1:00 PM Dmitry Yakunin <zeil@yandex-team.ru> wrote:
> >
> > This is preparation for usage in bpf_setsockopt.
> >
> > Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
> > Acked-by: Martin KaFai Lau <kafai@fb.com>
>
> Applied the set. Thanks
I had to drop it due to non-trivial conflict with net-next :(
Commit 71c48eb81c9e ("tcp: add tcp_sock_set_keepidle")
introduced __tcp_sock_set_keepidle() which is exactly the patch 2.
I didn't want to do such surgery.
Pls respin.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-06-01 21:53 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-27 19:58 [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 2/3] tcp: add keepalive_time_set helper Dmitry Yakunin
2020-05-27 19:58 ` [PATCH bpf-next v2 3/3] bpf: add SO_KEEPALIVE and related options to bpf_setsockopt Dmitry Yakunin
2020-06-01 20:32 ` [PATCH bpf-next v2 1/3] sock: move sock_valbool_flag to header Alexei Starovoitov
2020-06-01 21:52 ` Alexei Starovoitov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).