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authorEric Dumazet <dada1@cosmosbay.com>2007-03-25 22:14:49 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:24:21 -0700
commit92f37fd2ee805aa77925c1e64fd56088b46094fc (patch)
tree8251c38b83ab362116dac89d94412ce229b42831 /net/core
parentc7a3c5da35055e2fa97ed4f0da3eec4bd0ef4c38 (diff)
[NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support
Now that network timestamps use ktime_t infrastructure, we can add a new SOL_SOCKET sockopt SO_TIMESTAMPNS. This command is similar to SO_TIMESTAMP, but permits transmission of a 'timespec struct' instead of a 'timeval struct' control message. (nanosecond resolution instead of microsecond) Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are mutually exclusive. sock_recv_timestamp() became too big to be fully inlined so I added a __sock_recv_timestamp() helper function. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> CC: linux-arch@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/sock.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 792ae39804a..f9e6991d372 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -521,11 +521,18 @@ set_rcvbuf:
break;
case SO_TIMESTAMP:
+ case SO_TIMESTAMPNS:
if (valbool) {
+ if (optname == SO_TIMESTAMP)
+ sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+ else
+ sock_set_flag(sk, SOCK_RCVTSTAMPNS);
sock_set_flag(sk, SOCK_RCVTSTAMP);
sock_enable_timestamp(sk);
- } else
+ } else {
sock_reset_flag(sk, SOCK_RCVTSTAMP);
+ sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+ }
break;
case SO_RCVLOWAT:
@@ -715,7 +722,12 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
break;
case SO_TIMESTAMP:
- v.val = sock_flag(sk, SOCK_RCVTSTAMP);
+ v.val = sock_flag(sk, SOCK_RCVTSTAMP) &&
+ !sock_flag(sk, SOCK_RCVTSTAMPNS);
+ break;
+
+ case SO_TIMESTAMPNS:
+ v.val = sock_flag(sk, SOCK_RCVTSTAMPNS);
break;
case SO_RCVTIMEO: