| History log of /src/sys/netipsec/key_debug.c |
| Revision | | Date | Author | Comments |
| 1.25 |
| 11-Oct-2022 |
knakahara | Add sadb_x_policy_flags to inform SP origination.
This extension(struct sadb_x_policy) is *not* defined by RFC2367.
OpenBSD does not have reserved fields in struct sadb_x_policy.
Linux does not use this field yet.
FreeBSD uses this field as "sadb_x_policy_scope"; the value range is
from 0x00 to 0x04.
We use from most significant bit to avoid the above usage.
|
| 1.24 |
| 18-May-2022 |
christos | PR/56841: Andrew Cagney: debug-log IPcomp CPI lookups:
- debug-logs why an SPI is rejected
- adds missing __VA_OPT__(,) to some printf macros
- debug-log SPI+proto when adding/updating entry
|
| 1.23 |
| 27-Jan-2019 |
pgoyette | Merge the [pgoyette-compat] branch
|
| 1.22 |
| 19-Apr-2018 |
maxv | branches: 1.22.2;
Remove extra long file paths from the headers.
|
| 1.21 |
| 28-Sep-2017 |
christos | branches: 1.21.2;
- sanitize key debugging so that we don't print extra newlines or unassociated
debugging messages.
- remove unused functions and make internal ones static
- print information in one line per message
|
| 1.20 |
| 08-Aug-2017 |
ozaki-r | Introduce key_sa_refcnt and replace sav->refcnt with it (NFC)
|
| 1.19 |
| 26-Jul-2017 |
ozaki-r | Provide and apply key_sp_refcnt (NFC)
It simplifies further changes.
|
| 1.18 |
| 21-Jul-2017 |
ozaki-r | Remove ipsecrequest#sav
|
| 1.17 |
| 26-Apr-2017 |
ozaki-r | branches: 1.17.4;
Correct the length of the SADB_EXT header in debug outputs
The length is shifted 3 bits in PF_KEY protocol.
Originally fixed by hsuenaga@IIJ
|
| 1.16 |
| 18-Apr-2017 |
ozaki-r | Use %zu for size_t (fix build of 32bit archs)
|
| 1.15 |
| 18-Apr-2017 |
ozaki-r | Remove __FreeBSD__ and __NetBSD__ switches
No functional changes (except for a debug printf).
Note that there remain some __FreeBSD__ for sysctl knobs which counerparts
to NetBSD don't exist. And ipsec_osdep.h isn't touched yet; tidying it up
requires actual code changes.
|
| 1.14 |
| 06-Apr-2017 |
ozaki-r | Prepare netipsec for rump-ification
- Include "opt_*.h" only if _KERNEL_OPT is defined
- Allow encapinit to be called twice (by ifinit and ipe4_attach)
- ifinit didn't call encapinit if IPSEC is enabled (ipe4_attach called
it instead), however, on a rump kernel ipe4_attach may not be called
even if IPSEC is enabled. So we need to allow ifinit to call it anyway
- Setup sysctls in ipsec_attach explicitly instead of using SYSCTL_SETUP
- Call ip6flow_invalidate_all in key_spdadd only if in6_present
- It's possible that a rump kernel loads the ipsec library but not
the inet6 library
|
| 1.13 |
| 10-Jun-2016 |
ozaki-r | branches: 1.13.2; 1.13.4;
Avoid storing a pointer of an interface in a mbuf
Having a pointer of an interface in a mbuf isn't safe if we remove big
kernel locks; an interface object (ifnet) can be destroyed anytime in any
packet processing and accessing such object via a pointer is racy. Instead
we have to get an object from the interface collection (ifindex2ifnet) via
an interface index (if_index) that is stored to a mbuf instead of an
pointer.
The change provides two APIs: m_{get,put}_rcvif_psref that use psref(9)
for sleep-able critical sections and m_{get,put}_rcvif that use
pserialize(9) for other critical sections. The change also adds another
API called m_get_rcvif_NOMPSAFE, that is NOT MP-safe and for transition
moratorium, i.e., it is intended to be used for places where are not
planned to be MP-ified soon.
The change adds some overhead due to psref to performance sensitive paths,
however the overhead is not serious, 2% down at worst.
Proposed on tech-kern and tech-net.
|
| 1.12 |
| 30-Mar-2015 |
ozaki-r | Tidy up opt_ipsec.h inclusions
Some inclusions of opt_ipsec.h were for IPSEC_NAT_T and are now unnecessary.
Add inclusions to some C files for IPSEC_DEBUG.
|
| 1.11 |
| 23-May-2011 |
drochner | branches: 1.11.14; 1.11.32;
g/c remainders of IV handling in pfkey code -- this is done in
opencrypto now
|
| 1.10 |
| 21-Feb-2011 |
drochner | declare input to kdebug_*() functions which dump structures
to stdout in human readable form as "const"
|
| 1.9 |
| 07-Jul-2007 |
degroote | branches: 1.9.56; 1.9.62; 1.9.64;
Ansify
Remove useless extern
bzero -> memset, bcopy -> memcpy
No functionnal changes
|
| 1.8 |
| 04-Mar-2007 |
degroote | branches: 1.8.2; 1.8.4;
Remove useless cast
Use NULL instead of (void*) 0
|
| 1.7 |
| 04-Mar-2007 |
degroote | Fix fallout from caddr_t changes
|
| 1.6 |
| 04-Mar-2007 |
christos | Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
|
| 1.5 |
| 11-Dec-2005 |
christos | branches: 1.5.26;
merge ktrace-lwp.
|
| 1.4 |
| 08-May-2005 |
christos | branches: 1.4.2;
Panic strings should not end with \n.
|
| 1.3 |
| 06-Oct-2003 |
tls | branches: 1.3.4;
Reversion of "netkey merge", part 2 (replacement of removed files in the
repository by christos was part 1). netipsec should now be back as it
was on 2003-09-11, with some very minor changes:
1) Some residual platform-dependent code was moved from ipsec.h to
ipsec_osdep.h; without this, IPSEC_ASSERT() was multiply defined. ipsec.h
now includes ipsec_osdep.h
2) itojun's renaming of netipsec/files.ipsec to netipsec/files.netipsec has
been left in place (it's arguable which name is less confusing but the
rename is pretty harmless).
3) Some #endif TOKEN has been replaced by #endif /* TOKEN */; #endif TOKEN
is invalid and GCC 3 won't compile it.
An i386 kernel with "options FAST_IPSEC" and "options OPENCRYPTO" now
gets through "make depend" but fails to build with errors in ip_input.c.
But it's better than it was (thank heaven for small favors).
|
| 1.2 |
| 20-Aug-2003 |
jonathan | opt_inet6.h is FreeBSD-specific, so wrap it with #ifdef __FreeBSD__/#endif.
|
| 1.1 |
| 13-Aug-2003 |
jonathan | Initial import of Sam Leffler's `Fast-IPsec' from FreeBSD 4.
Fast-IPsec is a rework of the OpenBSD and KAME IPsec code, using the
OpenCryptoFramework (and thus hardware crypto accelerators) and
numerous detailed performance improvements.
This import is (aside from SPL-level names) the FreeBSD source,
imported ``as-is'' as a historical snapshot, for future maintenance
and comparison against the FreeBSD source. For now, several minor
kernel-API differences are hidden by macros a shim file, ipsec_osdep.h,
which (aside from SPL names) can be targeted at either NetBSD or FreeBSD.
|
| 1.3.4.5 |
| 10-Nov-2005 |
skrll | Sync with HEAD. Here we go again...
|
| 1.3.4.4 |
| 21-Sep-2004 |
skrll | Fix the sync with head I botched.
|
| 1.3.4.3 |
| 18-Sep-2004 |
skrll | Sync with HEAD.
|
| 1.3.4.2 |
| 03-Aug-2004 |
skrll | Sync with HEAD
|
| 1.3.4.1 |
| 06-Oct-2003 |
skrll | file key_debug.c was added on branch ktrace-lwp on 2004-08-03 10:55:29 +0000
|
| 1.4.2.1 |
| 03-Sep-2007 |
yamt | sync with head.
|
| 1.5.26.1 |
| 12-Mar-2007 |
rmind | Sync with HEAD.
|
| 1.8.4.1 |
| 11-Jul-2007 |
mjf | Sync with head.
|
| 1.8.2.1 |
| 15-Jul-2007 |
ad | Sync with head.
|
| 1.9.64.1 |
| 05-Mar-2011 |
bouyer | Sync with HEAD
|
| 1.9.62.1 |
| 06-Jun-2011 |
jruoho | Sync with HEAD.
|
| 1.9.56.2 |
| 31-May-2011 |
rmind | sync with head
|
| 1.9.56.1 |
| 05-Mar-2011 |
rmind | sync with head
|
| 1.11.32.3 |
| 28-Aug-2017 |
skrll | Sync with HEAD
|
| 1.11.32.2 |
| 09-Jul-2016 |
skrll | Sync with HEAD
|
| 1.11.32.1 |
| 06-Apr-2015 |
skrll | Sync with HEAD
|
| 1.11.14.1 |
| 03-Dec-2017 |
jdolecek | update from HEAD
|
| 1.13.4.1 |
| 21-Apr-2017 |
bouyer | Sync with HEAD
|
| 1.13.2.1 |
| 26-Apr-2017 |
pgoyette | Sync with HEAD
|
| 1.17.4.1 |
| 21-Oct-2017 |
snj | Pull up following revision(s) (requested by ozaki-r in ticket #300):
crypto/dist/ipsec-tools/src/setkey/parse.y: 1.19
crypto/dist/ipsec-tools/src/setkey/token.l: 1.20
distrib/sets/lists/tests/mi: 1.754, 1.757, 1.759
doc/TODO.smpnet: 1.12-1.13
sys/net/pfkeyv2.h: 1.32
sys/net/raw_cb.c: 1.23-1.24, 1.28
sys/net/raw_cb.h: 1.28
sys/net/raw_usrreq.c: 1.57-1.58
sys/net/rtsock.c: 1.228-1.229
sys/netinet/in_proto.c: 1.125
sys/netinet/ip_input.c: 1.359-1.361
sys/netinet/tcp_input.c: 1.359-1.360
sys/netinet/tcp_output.c: 1.197
sys/netinet/tcp_var.h: 1.178
sys/netinet6/icmp6.c: 1.213
sys/netinet6/in6_proto.c: 1.119
sys/netinet6/ip6_forward.c: 1.88
sys/netinet6/ip6_input.c: 1.181-1.182
sys/netinet6/ip6_output.c: 1.193
sys/netinet6/ip6protosw.h: 1.26
sys/netipsec/ipsec.c: 1.100-1.122
sys/netipsec/ipsec.h: 1.51-1.61
sys/netipsec/ipsec6.h: 1.18-1.20
sys/netipsec/ipsec_input.c: 1.44-1.51
sys/netipsec/ipsec_netbsd.c: 1.41-1.45
sys/netipsec/ipsec_output.c: 1.49-1.64
sys/netipsec/ipsec_private.h: 1.5
sys/netipsec/key.c: 1.164-1.234
sys/netipsec/key.h: 1.20-1.32
sys/netipsec/key_debug.c: 1.18-1.21
sys/netipsec/key_debug.h: 1.9
sys/netipsec/keydb.h: 1.16-1.20
sys/netipsec/keysock.c: 1.59-1.62
sys/netipsec/keysock.h: 1.10
sys/netipsec/xform.h: 1.9-1.12
sys/netipsec/xform_ah.c: 1.55-1.74
sys/netipsec/xform_esp.c: 1.56-1.72
sys/netipsec/xform_ipcomp.c: 1.39-1.53
sys/netipsec/xform_ipip.c: 1.50-1.54
sys/netipsec/xform_tcp.c: 1.12-1.16
sys/rump/librump/rumpkern/Makefile.rumpkern: 1.170
sys/rump/librump/rumpnet/net_stub.c: 1.27
sys/sys/protosw.h: 1.67-1.68
tests/net/carp/t_basic.sh: 1.7
tests/net/if_gif/t_gif.sh: 1.11
tests/net/if_l2tp/t_l2tp.sh: 1.3
tests/net/ipsec/Makefile: 1.7-1.9
tests/net/ipsec/algorithms.sh: 1.5
tests/net/ipsec/common.sh: 1.4-1.6
tests/net/ipsec/t_ipsec_ah_keys.sh: 1.2
tests/net/ipsec/t_ipsec_esp_keys.sh: 1.2
tests/net/ipsec/t_ipsec_gif.sh: 1.6-1.7
tests/net/ipsec/t_ipsec_l2tp.sh: 1.6-1.7
tests/net/ipsec/t_ipsec_misc.sh: 1.8-1.18
tests/net/ipsec/t_ipsec_sockopt.sh: 1.1-1.2
tests/net/ipsec/t_ipsec_tcp.sh: 1.1-1.2
tests/net/ipsec/t_ipsec_transport.sh: 1.5-1.6
tests/net/ipsec/t_ipsec_tunnel.sh: 1.9
tests/net/ipsec/t_ipsec_tunnel_ipcomp.sh: 1.1-1.2
tests/net/ipsec/t_ipsec_tunnel_odd.sh: 1.3
tests/net/mcast/t_mcast.sh: 1.6
tests/net/net/t_ipaddress.sh: 1.11
tests/net/net_common.sh: 1.20
tests/net/npf/t_npf.sh: 1.3
tests/net/route/t_flags.sh: 1.20
tests/net/route/t_flags6.sh: 1.16
usr.bin/netstat/fast_ipsec.c: 1.22
Do m_pullup before mtod
It may fix panicks of some tests on anita/sparc and anita/GuruPlug.
---
KNF
---
Enable DEBUG for babylon5
---
Apply C99-style struct initialization to xformsw
---
Tweak outputs of netstat -s for IPsec
- Get rid of "Fast"
- Use ipsec and ipsec6 for titles to clarify protocol
- Indent outputs of sub protocols
Original outputs were organized like this:
(Fast) IPsec:
IPsec ah:
IPsec esp:
IPsec ipip:
IPsec ipcomp:
(Fast) IPsec:
IPsec ah:
IPsec esp:
IPsec ipip:
IPsec ipcomp:
New outputs are organized like this:
ipsec:
ah:
esp:
ipip:
ipcomp:
ipsec6:
ah:
esp:
ipip:
ipcomp:
---
Add test cases for IPComp
---
Simplify IPSEC_OSTAT macro (NFC)
---
KNF; replace leading whitespaces with hard tabs
---
Introduce and use SADB_SASTATE_USABLE_P
---
KNF
---
Add update command for testing
Updating an SA (SADB_UPDATE) requires that a process issuing
SADB_UPDATE is the same as a process issued SADB_ADD (or SADB_GETSPI).
This means that update command must be used with add command in a
configuration of setkey. This usage is normally meaningless but
useful for testing (and debugging) purposes.
---
Add test cases for updating SA/SP
The tests require newly-added udpate command of setkey.
---
PR/52346: Frank Kardel: Fix checksumming for NAT-T
See XXX for improvements.
---
Remove codes for PACKET_TAG_IPSEC_IN_CRYPTO_DONE
It seems that PACKET_TAG_IPSEC_IN_CRYPTO_DONE is for network adapters
that have IPsec accelerators; a driver sets the mtag to a packet
when its device has already encrypted the packet.
Unfortunately no driver implements such offload features for long
years and seems unlikely to implement them soon. (Note that neither
FreeBSD nor Linux doesn't have such drivers.) Let's remove related
(unused) codes and simplify the IPsec code.
---
Fix usages of sadb_msg_errno
---
Avoid updating sav directly
On SADB_UPDATE a target sav was updated directly, which was unsafe.
Instead allocate another sav, copy variables of the old sav to
the new one and replace the old one with the new one.
---
Simplify; we can assume sav->tdb_xform cannot be NULL while it's valid
---
Rename key_alloc* functions (NFC)
We shouldn't use the term "alloc" for functions that just look up
data and actually don't allocate memory.
---
Use explicit_memset to surely zero-clear key_auth and key_enc
---
Make sure to clear keys on error paths of key_setsaval
---
Add missing KEY_FREESAV
---
Make sure a sav is inserted to a sah list after its initialization completes
---
Remove unnecessary zero-clearing codes from key_setsaval
key_setsaval is now used only for a newly-allocated sav. (It was
used to reset variables of an existing sav.)
---
Correct wrong assumption of sav->refcnt in key_delsah
A sav in a list is basically not to be sav->refcnt == 0. And also
KEY_FREESAV assumes sav->refcnt > 0.
---
Let key_getsavbyspi take a reference of a returning sav
---
Use time_mono_to_wall (NFC)
---
Separate sending message routine (NFC)
---
Simplify; remove unnecessary zero-clears
key_freesaval is used only when a target sav is being destroyed.
---
Omit NULL checks for sav->lft_c
sav->lft_c can be NULL only when initializing or destroying sav.
---
Omit unnecessary NULL checks for sav->sah
---
Omit unnecessary check of sav->state
key_allocsa_policy picks a sav of either MATURE or DYING so we
don't need to check its state again.
---
Simplify; omit unnecessary saidx passing
- ipsec_nextisr returns a saidx but no caller uses it
- key_checkrequest is passed a saidx but it can be gotton by
another argument (isr)
---
Fix splx isn't called on some error paths
---
Fix header size calculation of esp where sav is NULL
---
Fix header size calculation of ah in the case sav is NULL
This fix was also needed for esp.
---
Pass sav directly to opencrypto callback
In a callback, use a passed sav as-is by default and look up a sav
only if the passed sav is dead.
---
Avoid examining freshness of sav on packet processing
If a sav list is sorted (by lft_c->sadb_lifetime_addtime) in advance,
we don't need to examine each sav and also don't need to delete one
on the fly and send up a message. Fortunately every sav lists are sorted
as we need.
Added key_validate_savlist validates that each sav list is surely sorted
(run only if DEBUG because it's not cheap).
---
Add test cases for SAs with different SPIs
---
Prepare to stop using isr->sav
isr is a shared resource and using isr->sav as a temporal storage
for each packet processing is racy. And also having a reference from
isr to sav makes the lifetime of sav non-deterministic; such a reference
is removed when a packet is processed and isr->sav is overwritten by
new one. Let's have a sav locally for each packet processing instead of
using shared isr->sav.
However this change doesn't stop using isr->sav yet because there are
some users of isr->sav. isr->sav will be removed after the users find
a way to not use isr->sav.
---
Fix wrong argument handling
---
fix printf format.
---
Don't validate sav lists of LARVAL or DEAD states
We don't sort the lists so the validation will always fail.
Fix PR kern/52405
---
Make sure to sort the list when changing the state by key_sa_chgstate
---
Rename key_allocsa_policy to key_lookup_sa_bysaidx
---
Separate test files
---
Calculate ah_max_authsize on initialization as well as esp_max_ivlen
---
Remove m_tag_find(PACKET_TAG_IPSEC_PENDING_TDB) because nobody sets the tag
---
Restore a comment removed in previous
The comment is valid for the below code.
---
Make tests more stable
sleep command seems to wait longer than expected on anita so
use polling to wait for a state change.
---
Add tests that explicitly delete SAs instead of waiting for expirations
---
Remove invalid M_AUTHIPDGM check on ESP isr->sav
M_AUTHIPDGM flag is set to a mbuf in ah_input_cb. An sav of ESP can
have AH authentication as sav->tdb_authalgxform. However, in that
case esp_input and esp_input_cb are used to do ESP decryption and
AH authentication and M_AUTHIPDGM never be set to a mbuf. So
checking M_AUTHIPDGM of a mbuf on isr->sav of ESP is meaningless.
---
Look up sav instead of relying on unstable sp->req->sav
This code is executed only in an error path so an additional lookup
doesn't matter.
---
Correct a comment
---
Don't release sav if calling crypto_dispatch again
---
Remove extra KEY_FREESAV from ipsec_process_done
It should be done by the caller.
---
Don't bother the case of crp->crp_buf == NULL in callbacks
---
Hold a reference to an SP during opencrypto processing
An SP has a list of isr (ipsecrequest) that represents a sequence
of IPsec encryption/authentication processing. One isr corresponds
to one opencrypto processing. The lifetime of an isr follows its SP.
We pass an isr to a callback function of opencrypto to continue
to a next encryption/authentication processing. However nobody
guaranteed that the isr wasn't freed, i.e., its SP wasn't destroyed.
In order to avoid such unexpected destruction of isr, hold a reference
to its SP during opencrypto processing.
---
Don't make SAs expired on tests that delete SAs explicitly
---
Fix a debug message
---
Dedup error paths (NFC)
---
Use pool to allocate tdb_crypto
For ESP and AH, we need to allocate an extra variable space in addition
to struct tdb_crypto. The fixed size of pool items may be larger than
an actual requisite size of a buffer, but still the performance
improvement by replacing malloc with pool wins.
---
Don't use unstable isr->sav for header size calculations
We may need to optimize to not look up sav here for users that
don't need to know an exact size of headers (e.g., TCP segmemt size
caclulation).
---
Don't use sp->req->sav when handling NAT-T ESP fragmentation
In order to do this we need to look up a sav however an additional
look-up degrades performance. A sav is later looked up in
ipsec4_process_packet so delay the fragmentation check until then
to avoid an extra look-up.
---
Don't use key_lookup_sp that depends on unstable sp->req->sav
It provided a fast look-up of SP. We will provide an alternative
method in the future (after basic MP-ification finishes).
---
Stop setting isr->sav on looking up sav in key_checkrequest
---
Remove ipsecrequest#sav
---
Stop setting mtag of PACKET_TAG_IPSEC_IN_DONE because there is no users anymore
---
Skip ipsec_spi_*_*_preferred_new_timeout when running on qemu
Probably due to PR 43997
---
Add localcount to rump kernels
---
Remove unused macro
---
Fix key_getcomb_setlifetime
The fix adjusts a soft limit to be 80% of a corresponding hard limit.
I'm not sure the fix is really correct though, at least the original
code is wrong. A passed comb is zero-cleared before calling
key_getcomb_setlifetime, so
comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
is meaningless.
---
Provide and apply key_sp_refcnt (NFC)
It simplifies further changes.
---
Fix indentation
Pointed out by knakahara@
---
Use pslist(9) for sptree
---
Don't acquire global locks for IPsec if NET_MPSAFE
Note that the change is just to make testing easy and IPsec isn't MP-safe yet.
---
Let PF_KEY socks hold their own lock instead of softnet_lock
Operations on SAD and SPD are executed via PF_KEY socks. The operations
include deletions of SAs and SPs that will use synchronization mechanisms
such as pserialize_perform to wait for references to SAs and SPs to be
released. It is known that using such mechanisms with holding softnet_lock
causes a dead lock. We should avoid the situation.
---
Make IPsec SPD MP-safe
We use localcount(9), not psref(9), to make the sptree and secpolicy (SP)
entries MP-safe because SPs need to be referenced over opencrypto
processing that executes a callback in a different context.
SPs on sockets aren't managed by the sptree and can be destroyed in softint.
localcount_drain cannot be used in softint so we delay the destruction of
such SPs to a thread context. To do so, a list to manage such SPs is added
(key_socksplist) and key_timehandler_spd deletes dead SPs in the list.
For more details please read the locking notes in key.c.
Proposed on tech-kern@ and tech-net@
---
Fix updating ipsec_used
- key_update_used wasn't called in key_api_spddelete2 and key_api_spdflush
- key_update_used wasn't called if an SP had been added/deleted but
a reply to userland failed
---
Fix updating ipsec_used; turn on when SPs on sockets are added
---
Add missing IPsec policy checks to icmp6_rip6_input
icmp6_rip6_input is quite similar to rip6_input and the same checks exist
in rip6_input.
---
Add test cases for setsockopt(IP_IPSEC_POLICY)
---
Don't use KEY_NEWSP for dummy SP entries
By the change KEY_NEWSP is now not called from softint anymore
and we can use kmem_zalloc with KM_SLEEP for KEY_NEWSP.
---
Comment out unused functions
---
Add test cases that there are SPs but no relevant SAs
---
Don't allow sav->lft_c to be NULL
lft_c of an sav that was created by SADB_GETSPI could be NULL.
---
Clean up clunky eval strings
- Remove unnecessary \ at EOL
- This allows to omit ; too
- Remove unnecessary quotes for arguments of atf_set
- Don't expand $DEBUG in eval
- We expect it's expanded on execution
Suggested by kre@
---
Remove unnecessary KEY_FREESAV in an error path
sav should be freed (unreferenced) by the caller.
---
Use pslist(9) for sahtree
---
Use pslist(9) for sah->savtree
---
Rename local variable newsah to sah
It may not be new.
---
MP-ify SAD slightly
- Introduce key_sa_mtx and use it for some list operations
- Use pserialize for some list iterations
---
Introduce KEY_SA_UNREF and replace KEY_FREESAV with it where sav will never be actually freed in the future
KEY_SA_UNREF is still key_freesav so no functional change for now.
This change reduces diff of further changes.
---
Remove out-of-date log output
Pointed out by riastradh@
---
Use KDASSERT instead of KASSERT for mutex_ownable
Because mutex_ownable is too heavy to run in a fast path
even for DIAGNOSTIC + LOCKDEBUG.
Suggested by riastradh@
---
Assemble global lists and related locks into cache lines (NFCI)
Also rename variable names from *tree to *list because they are
just lists, not trees.
Suggested by riastradh@
---
Move locking notes
---
Update the locking notes
- Add locking order
- Add locking notes for misc lists such as reglist
- Mention pserialize, key_sp_ref and key_sp_unref on SP operations
Requested by riastradh@
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Describe constraints of key_sp_ref and key_sp_unref
Requested by riastradh@
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Hold key_sad.lock on SAVLIST_WRITER_INSERT_TAIL
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Add __read_mostly to key_psz
Suggested by riastradh@
---
Tweak wording (pserialize critical section => pserialize read section)
Suggested by riastradh@
---
Add missing mutex_exit
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Fix setkey -D -P outputs
The outputs were tweaked (by me), but I forgot updating libipsec
in my local ATF environment...
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MP-ify SAD (key_sad.sahlist and sah entries)
localcount(9) is used to protect key_sad.sahlist and sah entries
as well as SPD (and will be used for SAD sav).
Please read the locking notes of SAD for more details.
---
Introduce key_sa_refcnt and replace sav->refcnt with it (NFC)
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Destroy sav only in the loop for DEAD sav
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Fix KASSERT(solocked(sb->sb_so)) failure in sbappendaddr that is called eventually from key_sendup_mbuf
If key_sendup_mbuf isn't passed a socket, the assertion fails.
Originally in this case sb->sb_so was softnet_lock and callers
held softnet_lock so the assertion was magically satisfied.
Now sb->sb_so is key_so_mtx and also softnet_lock isn't always
held by callers so the assertion can fail.
Fix it by holding key_so_mtx if key_sendup_mbuf isn't passed a socket.
Reported by knakahara@
Tested by knakahara@ and ozaki-r@
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Fix locking notes of SAD
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Fix deadlock between key_sendup_mbuf called from key_acquire and localcount_drain
If we call key_sendup_mbuf from key_acquire that is called on packet
processing, a deadlock can happen like this:
- At key_acquire, a reference to an SP (and an SA) is held
- key_sendup_mbuf will try to take key_so_mtx
- Some other thread may try to localcount_drain to the SP with
holding key_so_mtx in say key_api_spdflush
- In this case localcount_drain never return because key_sendup_mbuf
that has stuck on key_so_mtx never release a reference to the SP
Fix the deadlock by deferring key_sendup_mbuf to the timer
(key_timehandler).
---
Fix that prev isn't cleared on retry
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Limit the number of mbufs queued for deferred key_sendup_mbuf
It's easy to be queued hundreds of mbufs on the list under heavy
network load.
---
MP-ify SAD (savlist)
localcount(9) is used to protect savlist of sah. The basic design is
similar to MP-ifications of SPD and SAD sahlist. Please read the
locking notes of SAD for more details.
---
Simplify ipsec_reinject_ipstack (NFC)
---
Add per-CPU rtcache to ipsec_reinject_ipstack
It reduces route lookups and also reduces rtcache lock contentions
when NET_MPSAFE is enabled.
---
Use pool_cache(9) instead of pool(9) for tdb_crypto objects
The change improves network throughput especially on multi-core systems.
---
Update
ipsec(4), opencrypto(9) and vlan(4) are now MP-safe.
---
Write known issues on scalability
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Share a global dummy SP between PCBs
It's never be changed so it can be pre-allocated and shared safely between PCBs.
---
Fix race condition on the rawcb list shared by rtsock and keysock
keysock now protects itself by its own mutex, which means that
the rawcb list is protected by two different mutexes (keysock's one
and softnet_lock for rtsock), of course it's useless.
Fix the situation by having a discrete rawcb list for each.
---
Use a dedicated mutex for rt_rawcb instead of softnet_lock if NET_MPSAFE
---
fix localcount leak in sav. fixed by ozaki-r@n.o.
I commit on behalf of him.
---
remove unnecessary comment.
---
Fix deadlock between pserialize_perform and localcount_drain
A typical ussage of localcount_drain looks like this:
mutex_enter(&mtx);
item = remove_from_list();
pserialize_perform(psz);
localcount_drain(&item->localcount, &cv, &mtx);
mutex_exit(&mtx);
This sequence can cause a deadlock which happens for example on the following
situation:
- Thread A calls localcount_drain which calls xc_broadcast after releasing
a specified mutex
- Thread B enters the sequence and calls pserialize_perform with holding
the mutex while pserialize_perform also calls xc_broadcast
- Thread C (xc_thread) that calls an xcall callback of localcount_drain tries
to hold the mutex
xc_broadcast of thread B doesn't start until xc_broadcast of thread A
finishes, which is a feature of xcall(9). This means that pserialize_perform
never complete until xc_broadcast of thread A finishes. On the other hand,
thread C that is a callee of xc_broadcast of thread A sticks on the mutex.
Finally the threads block each other (A blocks B, B blocks C and C blocks A).
A possible fix is to serialize executions of the above sequence by another
mutex, but adding another mutex makes the code complex, so fix the deadlock
by another way; the fix is to release the mutex before pserialize_perform
and instead use a condvar to prevent pserialize_perform from being called
simultaneously.
Note that the deadlock has happened only if NET_MPSAFE is enabled.
---
Add missing ifdef NET_MPSAFE
---
Take softnet_lock on pr_input properly if NET_MPSAFE
Currently softnet_lock is taken unnecessarily in some cases, e.g.,
icmp_input and encap4_input from ip_input, or not taken even if needed,
e.g., udp_input and tcp_input from ipsec4_common_input_cb. Fix them.
NFC if NET_MPSAFE is disabled (default).
---
- sanitize key debugging so that we don't print extra newlines or unassociated
debugging messages.
- remove unused functions and make internal ones static
- print information in one line per message
---
humanize printing of ip addresses
---
cast reduction, NFC.
---
Fix typo in comment
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Pull out ipsec_fill_saidx_bymbuf (NFC)
---
Don't abuse key_checkrequest just for looking up sav
It does more than expected for example key_acquire.
---
Fix SP is broken on transport mode
isr->saidx was modified accidentally in ipsec_nextisr.
Reported by christos@
Helped investigations by christos@ and knakahara@
---
Constify isr at many places (NFC)
---
Include socketvar.h for softnet_lock
---
Fix buffer length for ipsec_logsastr
|
| 1.21.2.1 |
| 22-Apr-2018 |
pgoyette | Sync with HEAD
|
| 1.22.2.1 |
| 10-Jun-2019 |
christos | Sync with HEAD
|
