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  1. 26 11月, 2008 17 次提交
  3. 31 10月, 2008 1 次提交
  5. 30 10月, 2008 1 次提交
  7. 29 10月, 2008 1 次提交
  9. 06 10月, 2008 1 次提交
  11. 01 10月, 2008 1 次提交
    • H
      ipsec: Put dumpers on the dump list · 12a169e7
      由 Herbert Xu 提交于 
      Herbert Xu came up with the idea and the original patch to make
xfrm_state dump list contain also dumpers:

As it is we go to extraordinary lengths to ensure that states
don't go away while dumpers go to sleep.  It's much easier if
we just put the dumpers themselves on the list since they can't
go away while they're going.

I've also changed the order of addition on new states to prevent
a never-ending dump.

Timo Teräs improved the patch to apply cleanly to latest tree,
modified iteration code to be more readable by using a common
struct for entries in the list, implemented the same idea for
xfrm_policy dumping and moved the af_key specific "last" entry
caching to af_key.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NTimo Teras <timo.teras@iki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      12a169e7
  13. 23 9月, 2008 1 次提交
    • H
      ipsec: Fix xfrm_state_walk race · 5c182458
      由 Herbert Xu 提交于 
      As discovered by Timo Teräs, the currently xfrm_state_walk scheme
is racy because if a second dump finishes before the first, we
may free xfrm states that the first dump would walk over later.

This patch fixes this by storing the dumps in a list in order
to calculate the correct completion counter which cures this
problem.

I've expanded netlink_cb in order to accomodate the extra state
related to this.  It shouldn't be a big deal since netlink_cb
is kmalloced for each dump and we're just increasing it by 4 or
8 bytes.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5c182458
  15. 10 9月, 2008 2 次提交
  17. 09 9月, 2008 1 次提交
  19. 03 9月, 2008 1 次提交
    • D
      ipsec: Fix deadlock in xfrm_state management. · 37b08e34
      由 David S. Miller 提交于 
      Ever since commit 4c563f76
("[XFRM]: Speed up xfrm_policy and xfrm_state walking") it is
illegal to call __xfrm_state_destroy (and thus xfrm_state_put())
with xfrm_state_lock held.  If we do, we'll deadlock since we
have the lock already and __xfrm_state_destroy() tries to take
it again.

Fix this by pushing the xfrm_state_put() calls after the lock
is dropped.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      37b08e34
  21. 26 7月, 2008 1 次提交
  23. 28 4月, 2008 2 次提交
  25. 25 3月, 2008 1 次提交
  27. 29 2月, 2008 1 次提交
    • T
      [XFRM]: Speed up xfrm_policy and xfrm_state walking · 4c563f76
      由 Timo Teras 提交于 
      Change xfrm_policy and xfrm_state walking algorithm from O(n^2) to O(n).
This is achieved adding the entries to one more list which is used
solely for walking the entries.

This also fixes some races where the dump can have duplicate or missing
entries when the SPD/SADB is modified during an ongoing dump.

Dumping SADB with 20000 entries using "time ip xfrm state" the sys
time dropped from 1.012s to 0.080s.
Signed-off-by: NTimo Teras <timo.teras@iki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      4c563f76
  29. 02 2月, 2008 1 次提交
  31. 01 2月, 2008 2 次提交
  33. 29 1月, 2008 5 次提交
    • E
      [XFRM]: xfrm_state_clone() should be static, not exported · 6666351d
      由 Eric Dumazet 提交于 
      xfrm_state_clone() is not used outside of net/xfrm/xfrm_state.c
There is no need to export it.

Spoted by sparse checker.
   CHECK   net/xfrm/xfrm_state.c
net/xfrm/xfrm_state.c:1103:19: warning: symbol 'xfrm_state_clone' was not
declared. Should it be static?
Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6666351d
    • I
      [XFRM]: Kill some bloat · cf35f43e
      由 Ilpo Järvinen 提交于 
      net/xfrm/xfrm_state.c:
  xfrm_audit_state_delete          | -589
  xfrm_replay_check                | -542
  xfrm_audit_state_icvfail         | -520
  xfrm_audit_state_add             | -589
  xfrm_audit_state_replay_overflow | -523
  xfrm_audit_state_notfound_simple | -509
  xfrm_audit_state_notfound        | -521
 7 functions changed, 3793 bytes removed, diff: -3793

net/xfrm/xfrm_state.c:
  xfrm_audit_helper_pktinfo | +522
  xfrm_audit_helper_sainfo  | +598
 2 functions changed, 1120 bytes added, diff: +1120

net/xfrm/xfrm_state.o:
 9 functions changed, 1120 bytes added, 3793 bytes removed, diff: -2673
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cf35f43e
    • E
      [NET]: Add some acquires/releases sparse annotations. · 9a429c49
      由 Eric Dumazet 提交于 
      Add __acquires() and __releases() annotations to suppress some sparse
warnings.

example of warnings :

net/ipv4/udp.c:1555:14: warning: context imbalance in 'udp_seq_start' - wrong
count at exit
net/ipv4/udp.c:1571:13: warning: context imbalance in 'udp_seq_stop' -
unexpected unlock
Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9a429c49
    • P
      [XFRM]: RFC4303 compliant auditing · afeb14b4
      由 Paul Moore 提交于 
      This patch adds a number of new IPsec audit events to meet the auditing
requirements of RFC4303.  This includes audit hooks for the following events:

 * Could not find a valid SA [sections 2.1, 3.4.2]
   . xfrm_audit_state_notfound()
   . xfrm_audit_state_notfound_simple()

 * Sequence number overflow [section 3.3.3]
   . xfrm_audit_state_replay_overflow()

 * Replayed packet [section 3.4.3]
   . xfrm_audit_state_replay()

 * Integrity check failure [sections 3.4.4.1, 3.4.4.2]
   . xfrm_audit_state_icvfail()

While RFC4304 deals only with ESP most of the changes in this patch apply to
IPsec in general, i.e. both AH and ESP.  The one case, integrity check
failure, where ESP specific code had to be modified the same was done to the
AH code for the sake of consistency.
Signed-off-by: NPaul Moore <paul.moore@hp.com>
Acked-by: NJames Morris <jmorris@namei.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      afeb14b4
    • P
      [XFRM]: Assorted IPsec fixups · 68277acc
      由 Paul Moore 提交于 
      This patch fixes a number of small but potentially troublesome things in the
XFRM/IPsec code:

 * Use the 'audit_enabled' variable already in include/linux/audit.h
   Removed the need for extern declarations local to each XFRM audit fuction

 * Convert 'sid' to 'secid' everywhere we can
   The 'sid' name is specific to SELinux, 'secid' is the common naming
   convention used by the kernel when refering to tokenized LSM labels,
   unfortunately we have to leave 'ctx_sid' in 'struct xfrm_sec_ctx' otherwise
   we risk breaking userspace

 * Convert address display to use standard NIP* macros
   Similar to what was recently done with the SPD audit code, this also also
   includes the removal of some unnecessary memcpy() calls

 * Move common code to xfrm_audit_common_stateinfo()
   Code consolidation from the "less is more" book on software development

 * Proper spacing around commas in function arguments
   Minor style tweak since I was already touching the code
Signed-off-by: NPaul Moore <paul.moore@hp.com>
Acked-by: NJames Morris <jmorris@namei.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      68277acc