kernel/include/net/netns/xfrm.h, branch linux-3.0.y

netns: reorder fields in struct net

2010-10-17T20:49:14Z

In a network bench, I noticed an unfortunate false sharing between 'loopback_dev' and 'count' fields in "struct net". 'count' is written each time a socket is created or destroyed, while loopback_dev might be often read in routing code. Move loopback_dev in a read mostly section of "struct net" Note: struct netns_xfrm is cache line aligned on SMP. (It contains a "struct dst_ops") Move it at the end to avoid holes, and reduce sizeof(struct net) by 128 bytes on ia32. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

netns xfrm: deal with dst entries in netns

2010-01-25T06:47:53Z

GC is non-existent in netns, so after you hit GC threshold, no new dst entries will be created until someone triggers cleanup in init_net. Make xfrm4_dst_ops and xfrm6_dst_ops per-netns. This is not done in a generic way, because it woule waste (AF_MAX - 2) * sizeof(struct dst_ops) bytes per-netns. Reorder GC threshold initialization so it'd be done before registering XFRM policies. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

net: Allow xfrm_user_net_exit to batch efficiently.

2009-12-03T20:22:03Z

xfrm.nlsk is provided by the xfrm_user module and is access via rcu from other parts of the xfrm code. Add xfrm.nlsk_stash a copy of xfrm.nlsk that will never be set to NULL. This allows the synchronize_net and netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets have been set to NULL. Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller

netns xfrm: per-netns sysctls

2008-11-26T02:00:48Z

Make net.core.xfrm_aevent_etime net.core.xfrm_acq_expires net.core.xfrm_aevent_rseqth net.core.xfrm_larval_drop sysctls per-netns. For that make net_core_path[] global, register it to prevent two /proc/net/core antries and change initcall position -- xfrm_init() is called from fs_initcall, so this one should be fs_initcall at least. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns NETLINK_XFRM socket

2008-11-26T01:38:20Z

Stub senders to init_net's one temporarily. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns policy hash resizing work

2008-11-26T01:28:57Z

Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns policy counts

2008-11-26T01:24:15Z

Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns xfrm_policy_bydst hash

2008-11-26T01:23:48Z

Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns inexact policies

2008-11-26T01:23:26Z

Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller

netns xfrm: per-netns xfrm_policy_byidx hashmask

2008-11-26T01:22:58Z

Per-netns hashes are independently resizeable. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller