linux/net/bridge
Eric Dumazet b7aa0bf70c [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 <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
CC: John find <linux.kernel@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:23:34 -07:00
..
netfilter [NET]: convert network timestamps to ktime_t 2007-04-25 22:23:34 -07:00
br_device.c
br_fdb.c [BRIDGE]: Fix fdb RCU race 2007-03-22 12:25:20 -07:00
br_forward.c
br_if.c [BRIDGE]: adding new device to bridge should enable if up 2007-03-07 16:10:53 -08:00
br_input.c
br_ioctl.c
br_netfilter.c [NET]: fix up misplaced inlines. 2007-03-22 12:27:49 -07:00
br_netlink.c
br_notify.c
br_private_stp.h
br_private.h
br_stp_bpdu.c
br_stp_if.c [BRIDGE]: Unaligned access when comparing ethernet addresses 2007-04-17 14:16:00 -07:00
br_stp_timer.c
br_stp.c
br_sysfs_br.c
br_sysfs_if.c
br.c
Kconfig
Makefile