From b7aa0bf70c4afb9e38be25f5c0922498d0f8684c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 19 Apr 2007 16:16:32 -0700 Subject: [NET]: convert network timestamps to ktime_t We currently use a special structure (struct skb_timeval) and plain 'struct timeval' to store packet timestamps in sk_buffs and struct sock. This has some drawbacks : - Fixed resolution of micro second. - Waste of space on 64bit platforms where sizeof(struct timeval)=16 I suggest using ktime_t that is a nice abstraction of high resolution time services, currently capable of nanosecond resolution. As sizeof(ktime_t) is 8 bytes, using ktime_t in 'struct sock' permits a 8 byte shrink of this structure on 64bit architectures. Some other structures also benefit from this size reduction (struct ipq in ipv4/ip_fragment.c, struct frag_queue in ipv6/reassembly.c, ...) Once this ktime infrastructure adopted, we can more easily provide nanosecond resolution on top of it. (ioctl SIOCGSTAMPNS and/or SO_TIMESTAMPNS/SCM_TIMESTAMPNS) Note : this patch includes a bug correction in compat_sock_get_timestamp() where a "err = 0;" was missing (so this syscall returned -ENOENT instead of 0) Signed-off-by: Eric Dumazet CC: Stephen Hemminger CC: John find Signed-off-by: David S. Miller --- net/econet/af_econet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/econet/af_econet.c') diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c index bc12e36263f0..f573eddc6034 100644 --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -162,7 +162,7 @@ static int econet_recvmsg(struct kiocb *iocb, struct socket *sock, err = memcpy_toiovec(msg->msg_iov, skb->data, copied); if (err) goto out_free; - skb_get_timestamp(skb, &sk->sk_stamp); + sk->sk_stamp = skb->tstamp; if (msg->msg_name) memcpy(msg->msg_name, skb->cb, msg->msg_namelen); -- cgit v1.2.3