linux/net/bridge/netfilter
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
..
ebt_802_3.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_among.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_arp.c [BRIDGE]: Annotations. 2006-12-02 21:22:56 -08:00
ebt_arpreply.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_dnat.c
ebt_ip.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_limit.c
ebt_log.c [NETFILTER]: nf_log: minor cleanups 2007-02-12 11:11:55 -08:00
ebt_mark_m.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_mark.c [NETFILTER]: ebtables: add --snap-arp option 2006-12-02 21:31:32 -08:00
ebt_pkttype.c
ebt_redirect.c
ebt_snat.c [NETFILTER]: ebtables: add --snap-arp option 2006-12-02 21:31:32 -08:00
ebt_stp.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebt_ulog.c [NET]: convert network timestamps to ktime_t 2007-04-25 22:23:34 -07:00
ebt_vlan.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebtable_broute.c [EBTABLES]: Split ebt_replace into user and kernel variants, annotate. 2006-12-02 21:32:05 -08:00
ebtable_filter.c [NET] BRIDGE: Fix whitespace errors. 2007-02-10 23:19:23 -08:00
ebtable_nat.c [EBTABLES]: Split ebt_replace into user and kernel variants, annotate. 2006-12-02 21:32:05 -08:00
ebtables.c [PATCH] Convert highest_possible_processor_id to nr_cpu_ids 2007-02-20 17:10:13 -08:00
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