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sock: expose so_timestamping options for mptcp

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Similar to previous patch: expose SO_TIMESTAMPING helper so we do not
have to copy & paste this into the mptcp core.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2021-06-03 16:24:28 -07:00 committed by David S. Miller
parent 371087aa47
commit ced122d90f
2 changed files with 38 additions and 35 deletions
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2
include/net/sock.h
View File

@ -2744,6 +2744,8 @@ void sock_def_readable(struct sock *sk);
int sock_bindtoindex(struct sock *sk, int ifindex, bool lock_sk);
void sock_set_timestamp(struct sock *sk, int optname, bool valbool);
int sock_set_timestamping(struct sock *sk, int optname, int val);
void sock_enable_timestamps(struct sock *sk);
void sock_no_linger(struct sock *sk);
void sock_set_keepalive(struct sock *sk);

71
net/core/sock.c
View File

@ -794,6 +794,40 @@ void sock_set_timestamp(struct sock *sk, int optname, bool valbool)
}
}
int sock_set_timestamping(struct sock *sk, int optname, int val)
{
if (val & ~SOF_TIMESTAMPING_MASK)
return -EINVAL;
if (val & SOF_TIMESTAMPING_OPT_ID &&
!(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) {
if (sk->sk_protocol == IPPROTO_TCP &&
sk->sk_type == SOCK_STREAM) {
if ((1 << sk->sk_state) &
(TCPF_CLOSE | TCPF_LISTEN))
return -EINVAL;
sk->sk_tskey = tcp_sk(sk)->snd_una;
} else {
sk->sk_tskey = 0;
}
}
if (val & SOF_TIMESTAMPING_OPT_STATS &&
!(val & SOF_TIMESTAMPING_OPT_TSONLY))
return -EINVAL;
sk->sk_tsflags = val;
sock_valbool_flag(sk, SOCK_TSTAMP_NEW, optname == SO_TIMESTAMPING_NEW);
if (val & SOF_TIMESTAMPING_RX_SOFTWARE)
sock_enable_timestamp(sk,
SOCK_TIMESTAMPING_RX_SOFTWARE);
else
sock_disable_timestamp(sk,
(1UL << SOCK_TIMESTAMPING_RX_SOFTWARE));
return 0;
}
void sock_set_keepalive(struct sock *sk)
{
lock_sock(sk);
@ -1012,43 +1046,10 @@ set_sndbuf:
case SO_TIMESTAMPNS_NEW:
sock_set_timestamp(sk, valbool, optname);
break;
case SO_TIMESTAMPING_NEW:
case SO_TIMESTAMPING_OLD:
if (val & ~SOF_TIMESTAMPING_MASK) {
ret = -EINVAL;
break;
}
if (val & SOF_TIMESTAMPING_OPT_ID &&
!(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) {
if (sk->sk_protocol == IPPROTO_TCP &&
sk->sk_type == SOCK_STREAM) {
if ((1 << sk->sk_state) &
(TCPF_CLOSE | TCPF_LISTEN)) {
ret = -EINVAL;
break;
}
sk->sk_tskey = tcp_sk(sk)->snd_una;
} else {
sk->sk_tskey = 0;
}
}
if (val & SOF_TIMESTAMPING_OPT_STATS &&
!(val & SOF_TIMESTAMPING_OPT_TSONLY)) {
ret = -EINVAL;
break;
}
sk->sk_tsflags = val;
sock_valbool_flag(sk, SOCK_TSTAMP_NEW, optname == SO_TIMESTAMPING_NEW);
if (val & SOF_TIMESTAMPING_RX_SOFTWARE)
sock_enable_timestamp(sk,
SOCK_TIMESTAMPING_RX_SOFTWARE);
else
sock_disable_timestamp(sk,
(1UL << SOCK_TIMESTAMPING_RX_SOFTWARE));
ret = sock_set_timestamping(sk, optname, val);
break;
case SO_RCVLOWAT: