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| author | Patrick Ohly <patrick.ohly@intel.com> | 2009-02-12 05:03:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-15 22:43:35 -0800 |
| commit | 20d4947353be60e909e6b1a79d241457edd6833f (patch) | |
| tree | 939ced518fc52e57df9ee9efb0cd14b6e26a3bc4 /net/compat.c | |
| parent | ac45f602ee3d1b6f326f68bc0c2591ceebf05ba4 (diff) | |
| download | lwn-20d4947353be60e909e6b1a79d241457edd6833f.tar.gz lwn-20d4947353be60e909e6b1a79d241457edd6833f.zip | |
net: socket infrastructure for SO_TIMESTAMPING
The overlap with the old SO_TIMESTAMP[NS] options is handled so
that time stamping in software (net_enable_timestamp()) is
enabled when SO_TIMESTAMP[NS] and/or SO_TIMESTAMPING_RX_SOFTWARE
is set. It's disabled if all of these are off.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/compat.c')
| -rw-r--r-- | net/compat.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/net/compat.c b/net/compat.c index a3a2ba0fac08..8d739053afe4 100644 --- a/net/compat.c +++ b/net/compat.c @@ -216,7 +216,7 @@ Efault: int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) { struct compat_timeval ctv; - struct compat_timespec cts; + struct compat_timespec cts[3]; struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; struct compat_cmsghdr cmhdr; int cmlen; @@ -233,12 +233,17 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat data = &ctv; len = sizeof(ctv); } - if (level == SOL_SOCKET && type == SCM_TIMESTAMPNS) { + if (level == SOL_SOCKET && + (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) { + int count = type == SCM_TIMESTAMPNS ? 1 : 3; + int i; struct timespec *ts = (struct timespec *)data; - cts.tv_sec = ts->tv_sec; - cts.tv_nsec = ts->tv_nsec; + for (i = 0; i < count; i++) { + cts[i].tv_sec = ts[i].tv_sec; + cts[i].tv_nsec = ts[i].tv_nsec; + } data = &cts; - len = sizeof(cts); + len = sizeof(cts[0]) * count; } cmlen = CMSG_COMPAT_LEN(len); @@ -455,7 +460,7 @@ int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) struct timeval tv; if (!sock_flag(sk, SOCK_TIMESTAMP)) - sock_enable_timestamp(sk); + sock_enable_timestamp(sk, SOCK_TIMESTAMP); tv = ktime_to_timeval(sk->sk_stamp); if (tv.tv_sec == -1) return err; @@ -479,7 +484,7 @@ int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *usersta struct timespec ts; if (!sock_flag(sk, SOCK_TIMESTAMP)) - sock_enable_timestamp(sk); + sock_enable_timestamp(sk, SOCK_TIMESTAMP); ts = ktime_to_timespec(sk->sk_stamp); if (ts.tv_sec == -1) return err; |