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As Paolo promised we continue to hammer out issues in our selftests.
This is not the end but probably the peak.
Current release - regressions:
- smc: fix incorrect SMC-D link group matching logic
Current release - new code bugs:
- eth: bnxt: silence WARN() when device skips a timestamp, it happens
Previous releases - regressions:
- ipmr: fix null-deref when forwarding mcast packets
- conntrack: evaluate window negotiation only for packets in the REPLY
direction, otherwise SYN retransmissions trigger incorrect window
scale negotiation
- ipset: fix performance regression in swap operation
Previous releases - always broken:
- tcp: add sanity checks to types of pages getting into
the rx zerocopy path, we only support basic NIC -> user,
no page cache pages etc.
- ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()
- nt_tables: more input sanitization changes
- dsa: mt7530: fix 10M/100M speed on MediaTek MT7988 switch
- bridge: mcast: fix loss of snooping after long uptime,
jiffies do wrap on 32bit
- xen-netback: properly sync TX responses, protect with locking
- phy: mediatek-ge-soc: sync calibration values with MediaTek SDK,
increase connection stability
- eth: pds: fixes for various teardown, and reset races
Misc:
- hsr: silence WARN() if we can't alloc supervision frame, it happens
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter.
As Paolo promised we continue to hammer out issues in our selftests.
This is not the end but probably the peak.
Current release - regressions:
- smc: fix incorrect SMC-D link group matching logic
Current release - new code bugs:
- eth: bnxt: silence WARN() when device skips a timestamp, it happens
Previous releases - regressions:
- ipmr: fix null-deref when forwarding mcast packets
- conntrack: evaluate window negotiation only for packets in the
REPLY direction, otherwise SYN retransmissions trigger incorrect
window scale negotiation
- ipset: fix performance regression in swap operation
Previous releases - always broken:
- tcp: add sanity checks to types of pages getting into the rx
zerocopy path, we only support basic NIC -> user, no page cache
pages etc.
- ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()
- nt_tables: more input sanitization changes
- dsa: mt7530: fix 10M/100M speed on MediaTek MT7988 switch
- bridge: mcast: fix loss of snooping after long uptime, jiffies do
wrap on 32bit
- xen-netback: properly sync TX responses, protect with locking
- phy: mediatek-ge-soc: sync calibration values with MediaTek SDK,
increase connection stability
- eth: pds: fixes for various teardown, and reset races
Misc:
- hsr: silence WARN() if we can't alloc supervision frame, it
happens"
* tag 'net-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (82 commits)
doc/netlink/specs: Add missing attr in rt_link spec
idpf: avoid compiler padding in virtchnl2_ptype struct
selftests: mptcp: join: stop transfer when check is done (part 2)
selftests: mptcp: join: stop transfer when check is done (part 1)
selftests: mptcp: allow changing subtests prefix
selftests: mptcp: decrease BW in simult flows
selftests: mptcp: increase timeout to 30 min
selftests: mptcp: add missing kconfig for NF Mangle
selftests: mptcp: add missing kconfig for NF Filter in v6
selftests: mptcp: add missing kconfig for NF Filter
mptcp: fix data re-injection from stale subflow
selftests: net: enable some more knobs
selftests: net: add missing config for NF_TARGET_TTL
selftests: forwarding: List helper scripts in TEST_FILES Makefile variable
selftests: net: List helper scripts in TEST_FILES Makefile variable
selftests: net: Remove executable bits from library scripts
selftests: bonding: Check initial state
selftests: team: Add missing config options
hv_netvsc: Fix race condition between netvsc_probe and netvsc_remove
xen-netback: properly sync TX responses
...
- fix a timeout issue and a memory leak in batman-adv multicast,
by Linus Lüssing (2 patches)
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Merge tag 'batadv-net-pullrequest-20240201' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
Here are some batman-adv bugfixes:
- fix a timeout issue and a memory leak in batman-adv multicast,
by Linus Lüssing (2 patches)
* tag 'batadv-net-pullrequest-20240201' of git://git.open-mesh.org/linux-merge:
batman-adv: mcast: fix memory leak on deleting a batman-adv interface
batman-adv: mcast: fix mcast packet type counter on timeouted nodes
====================
Link: https://lore.kernel.org/r/20240201110110.29129-1-sw@simonwunderlich.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'nf-24-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) TCP conntrack now only evaluates window negotiation for packets in
the REPLY direction, from Ryan Schaefer. Otherwise SYN retransmissions
trigger incorrect window scale negotiation. From Ryan Schaefer.
2) Restrict tunnel objects to NFPROTO_NETDEV which is where it makes sense
to use this object type.
3) Fix conntrack pick up from the middle of SCTP_CID_SHUTDOWN_ACK packets.
From Xin Long.
4) Another attempt from Jozsef Kadlecsik to address the slow down of the
swap command in ipset.
5) Replace a BUG_ON by WARN_ON_ONCE in nf_log, and consolidate check for
the case that the logger is NULL from the read side lock section.
6) Address lack of sanitization for custom expectations. Restrict layer 3
and 4 families to what it is supported by userspace.
* tag 'nf-24-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations
netfilter: nf_log: replace BUG_ON by WARN_ON_ONCE when putting logger
netfilter: ipset: fix performance regression in swap operation
netfilter: conntrack: check SCTP_CID_SHUTDOWN_ACK for vtag setting in sctp_new
netfilter: nf_tables: restrict tunnel object to NFPROTO_NETDEV
netfilter: conntrack: correct window scaling with retransmitted SYN
====================
Link: https://lore.kernel.org/r/20240131225943.7536-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the MPTCP PM detects that a subflow is stale, all the packet
scheduler must re-inject all the mptcp-level unacked data. To avoid
acquiring unneeded locks, it first try to check if any unacked data
is present at all in the RTX queue, but such check is currently
broken, as it uses TCP-specific helper on an MPTCP socket.
Funnily enough fuzzers and static checkers are happy, as the accessed
memory still belongs to the mptcp_sock struct, and even from a
functional perspective the recovery completed successfully, as
the short-cut test always failed.
A recent unrelated TCP change - commit d5fed5addb ("tcp: reorganize
tcp_sock fast path variables") - exposed the issue, as the tcp field
reorganization makes the mptcp code always skip the re-inection.
Fix the issue dropping the bogus call: we are on a slow path, the early
optimization proved once again to be evil.
Fixes: 1e1d9d6f11 ("mptcp: handle pending data on closed subflow")
Cc: stable@vger.kernel.org
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/468
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240131-upstream-net-20240131-mptcp-ci-issues-v1-1-4c1c11e571ff@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Originally, the code related to garbage collection was all in garbage.c.
Commit f4e65870e5 ("net: split out functions related to registering
inflight socket files") moved some functions to scm.c for io_uring and
added CONFIG_UNIX_SCM just in case AF_UNIX was built as module.
However, since commit 97154bcf4d ("af_unix: Kconfig: make CONFIG_UNIX
bool"), AF_UNIX is no longer built separately. Also, io_uring does not
support SCM_RIGHTS now.
Let's move the functions back to garbage.c
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20240129190435.57228-4-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since commit 705318a99a ("io_uring/af_unix: disable sending
io_uring over sockets"), io_uring's unix socket cannot be passed
via SCM_RIGHTS, so it does not contribute to cyclic reference and
no longer be candidate for garbage collection.
Also, commit 6e5e6d2749 ("io_uring: drop any code related to
SCM_RIGHTS") cleaned up SCM_RIGHTS code in io_uring.
Let's do it in AF_UNIX as well by reverting commit 0091bfc817
("io_uring/af_unix: defer registered files gc to io_uring release")
and commit 1036908045 ("net: reclaim skb->scm_io_uring bit").
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20240129190435.57228-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is a prep patch for the last patch in this series so that
checkpatch will not warn about BUG_ON().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20240129190435.57228-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
commit 0a31bd5f2b ("KMEM_CACHE(): simplify slab cache creation")
introduces a new macro.
Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
to simplify the creation of SLAB caches.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240130092536.73623-1-chentao@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
commit 0a31bd5f2b ("KMEM_CACHE(): simplify slab cache creation")
introduces a new macro.
Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
to simplify the creation of SLAB caches.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240130092255.73078-1-chentao@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When inetdev_valid_mtu fails, cork->opt should be freed if it is
allocated in ip_setup_cork. Otherwise there could be a memleak.
Fixes: 501a90c945 ("inet: protect against too small mtu values.")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240129091017.2938835-1-alexious@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Disallow families other than NFPROTO_{IPV4,IPV6,INET}.
- Disallow layer 4 protocol with no ports, since destination port is a
mandatory attribute for this object.
Fixes: 857b46027d ("netfilter: nft_ct: add ct expectations support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Module reference is bumped for each user, this should not ever happen.
But BUG_ON check should use rcu_access_pointer() instead.
If this ever happens, do WARN_ON_ONCE() instead of BUG_ON() and
consolidate pointer check under the rcu read side lock section.
Fixes: fab4085f4e ("netfilter: log: nf_log_packet() as real unified interface")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The patch "netfilter: ipset: fix race condition between swap/destroy
and kernel side add/del/test", commit 28628fa9 fixes a race condition.
But the synchronize_rcu() added to the swap function unnecessarily slows
it down: it can safely be moved to destroy and use call_rcu() instead.
Eric Dumazet pointed out that simply calling the destroy functions as
rcu callback does not work: sets with timeout use garbage collectors
which need cancelling at destroy which can wait. Therefore the destroy
functions are split into two: cancelling garbage collectors safely at
executing the command received by netlink and moving the remaining
part only into the rcu callback.
Link: https://lore.kernel.org/lkml/C0829B10-EAA6-4809-874E-E1E9C05A8D84@automattic.com/
Fixes: 28628fa952 ("netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test")
Reported-by: Ale Crismani <ale.crismani@automattic.com>
Reported-by: David Wang <00107082@163.com>
Tested-by: David Wang <00107082@163.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The annotation says in sctp_new(): "If it is a shutdown ack OOTB packet, we
expect a return shutdown complete, otherwise an ABORT Sec 8.4 (5) and (8)".
However, it does not check SCTP_CID_SHUTDOWN_ACK before setting vtag[REPLY]
in the conntrack entry(ct).
Because of that, if the ct in Router disappears for some reason in [1]
with the packet sequence like below:
Client > Server: sctp (1) [INIT] [init tag: 3201533963]
Server > Client: sctp (1) [INIT ACK] [init tag: 972498433]
Client > Server: sctp (1) [COOKIE ECHO]
Server > Client: sctp (1) [COOKIE ACK]
Client > Server: sctp (1) [DATA] (B)(E) [TSN: 3075057809]
Server > Client: sctp (1) [SACK] [cum ack 3075057809]
Server > Client: sctp (1) [HB REQ]
(the ct in Router disappears somehow) <-------- [1]
Client > Server: sctp (1) [HB ACK]
Client > Server: sctp (1) [DATA] (B)(E) [TSN: 3075057810]
Client > Server: sctp (1) [DATA] (B)(E) [TSN: 3075057810]
Client > Server: sctp (1) [HB REQ]
Client > Server: sctp (1) [DATA] (B)(E) [TSN: 3075057810]
Client > Server: sctp (1) [HB REQ]
Client > Server: sctp (1) [ABORT]
when processing HB ACK packet in Router it calls sctp_new() to initialize
the new ct with vtag[REPLY] set to HB_ACK packet's vtag.
Later when sending DATA from Client, all the SACKs from Server will get
dropped in Router, as the SACK packet's vtag does not match vtag[REPLY]
in the ct. The worst thing is the vtag in this ct will never get fixed
by the upcoming packets from Server.
This patch fixes it by checking SCTP_CID_SHUTDOWN_ACK before setting
vtag[REPLY] in the ct in sctp_new() as the annotation says. With this
fix, it will leave vtag[REPLY] in ct to 0 in the case above, and the
next HB REQ/ACK from Server is able to fix the vtag as its value is 0
in nf_conntrack_sctp_packet().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Bail out on using the tunnel dst template from other than netdev family.
Add the infrastructure to check for the family in objects.
Fixes: af308b94a2 ("netfilter: nf_tables: add tunnel support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
commit c7aab4f170 ("netfilter: nf_conntrack_tcp: re-init for syn packets
only") introduces a bug where SYNs in ORIGINAL direction on reused 5-tuple
result in incorrect window scale negotiation. This commit merged the SYN
re-initialization and simultaneous open or SYN retransmits cases. Merging
this block added the logic in tcp_init_sender() that performed window scale
negotiation to the retransmitted syn case. Previously. this would only
result in updating the sender's scale and flags. After the merge the
additional logic results in improperly clearing the scale in ORIGINAL
direction before any packets in the REPLY direction are received. This
results in packets incorrectly being marked invalid for being
out-of-window.
This can be reproduced with the following trace:
Packet Sequence:
> Flags [S], seq 1687765604, win 62727, options [.. wscale 7], length 0
> Flags [S], seq 1944817196, win 62727, options [.. wscale 7], length 0
In order to fix the issue, only evaluate window negotiation for packets
in the REPLY direction. This was tested with simultaneous open, fast
open, and the above reproduction.
Fixes: c7aab4f170 ("netfilter: nf_conntrack_tcp: re-init for syn packets only")
Signed-off-by: Ryan Schaefer <ryanschf@amazon.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Merge tag 'nf-next-24-01-29' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next
Florian Westphal says:
====================
nf-next pr 2024-01-29
This batch contains updates for your *next* tree.
First three changes, from Phil Sutter, allow userspace to define
a table that is exclusively owned by a daemon (via netlink socket
aliveness) without auto-removing this table when the userspace program
exits. Such table gets marked as orphaned and a restarting management
daemon may re-attach/reassume ownership.
Next patch, from Pablo, passes already-validated flags variable around
rather than having called code re-fetch it from netlnik message.
Patches 5 and 6 update ipvs and nf_conncount to use the recently
introduced KMEM_CACHE() macro.
Last three patches, from myself, tweak kconfig logic a little to
permit a kernel configuration that can run iptables-over-nftables
but not classic (setsockopt) iptables.
Such builds lack the builtin-filter/mangle/raw/nat/security tables,
the set/getsockopt interface and the "old blob format"
interpreter/traverser. For now, this is 'oldconfig friendly', users
need to manually deselect existing config options for this.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add linkmode bitmap members to struct ethtool_keee, but keep the legacy
u32 bitmaps for compatibility with existing drivers.
Use linkmode "supported" not being empty as indicator that a user wants
to use the linkmode bitmap members instead of the legacy bitmaps.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is in preparation of using the existing names for linkmode
bitmaps.
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch changes the following in struct ethtool_keee
- remove member cmd, it's not needed on kernel side
- remove reserved fields
- switch the semantically boolean members to type bool
We don't have to change any user of the boolean members due to the
implicit casting from/to bool. A small change is needed where a
pointer to bool members is used, in addition remove few now unneeded
double negations.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to later extend struct ethtool_keee, we have to decouple it
from the userspace format represented by struct ethtool_eee.
Therefore switch back to struct ethtool_eee, representing the userspace
format, and add conversion between ethtool_eee and ethtool_keee.
Struct ethtool_keee will be changed in follow-up patches, therefore
don't do a *keee = *eee here.
Member cmd isn't copied, because it's not used, and we'll remove
it in the next patch of this series. In addition omit setting cmd
to ETHTOOL_GEEE in the ioctl response, userspace ethtool isn't
interested in it.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to pass EEE link modes beyond bit 32 to userspace we have to
complement the 32 bit bitmaps in struct ethtool_eee with linkmode
bitmaps. Therefore, similar to ethtool_link_settings and
ethtool_link_ksettings, add a struct ethtool_keee. In a first step
it's an identical copy of ethtool_eee. This patch simply does a
s/ethtool_eee/ethtool_keee/g for all users.
No functional change intended.
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
When port function state change is requested, and when the driver
does not support it, it refers to the hw address attribute instead
of state attribute. Seems like a copy paste error.
Fix it by referring to the port function state attribute.
Fixes: c0bea69d1c ("devlink: Validate port function request")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240129191059.129030-1-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The original idea of the delay_time check was to not apply multicast
snooping too early when an MLD querier appears. And to instead wait at
least for MLD reports to arrive before switching from flooding to group
based, MLD snooped forwarding, to avoid temporary packet loss.
However in a batman-adv mesh network it was noticed that after 248 days of
uptime 32bit MIPS based devices would start to signal that they had
stopped applying multicast snooping due to missing queriers - even though
they were the elected querier and still sending MLD queries themselves.
While time_is_before_jiffies() generally is safe against jiffies
wrap-arounds, like the code comments in jiffies.h explain, it won't
be able to track a difference larger than ULONG_MAX/2. With a 32bit
large jiffies and one jiffies tick every 10ms (CONFIG_HZ=100) on these MIPS
devices running OpenWrt this would result in a difference larger than
ULONG_MAX/2 after 248 (= 2^32/100/60/60/24/2) days and
time_is_before_jiffies() would then start to return false instead of
true. Leading to multicast snooping not being applied to multicast
packets anymore.
Fix this issue by using a proper timer_list object which won't have this
ULONG_MAX/2 difference limitation.
Fixes: b00589af3b ("bridge: disable snooping if there is no querier")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20240127175033.9640-1-linus.luessing@c0d3.blue
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().
Note that the upper limit of ida_simple_get() is exclusive, but the one of
ida_alloc_range() is inclusive. So a -1 has been added when needed.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/8e889d18a6c881b09db4650d4b30a62d76f4fe77.1705734073.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
to simplify the creation of SLAB caches.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240124075801.471330-1-chentao@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
On a parisc64 kernel I sometimes notice this kernel warning:
Kernel unaligned access to 0x40ff8814 at ndisc_send_skb+0xc0/0x4d8
The address 0x40ff8814 points to the in6addr_linklocal_allrouters
variable and the warning simply means that some ipv6 function tries to
read a 64-bit word directly from the not-64-bit aligned
in6addr_linklocal_allrouters variable.
Unaligned accesses are non-critical as the architecture or exception
handlers usually will fix it up at runtime. Nevertheless it may trigger
a performance penality for some architectures. For details read the
"unaligned-memory-access" kernel documentation.
The patch below ensures that the ipv6 loopback and router addresses will
always be naturally aligned. This prevents the unaligned accesses for
all architectures.
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: 034dfc5df9 ("ipv6: export in6addr_loopback to modules")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/ZbNuFM1bFqoH-UoY@p100
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
For now, the packet with an old ack is not accepted if we are in
FIN_WAIT1 state, which can cause retransmission. Taking the following
case as an example:
Client Server
| |
FIN_WAIT1(Send FIN, seq=10) FIN_WAIT1(Send FIN, seq=20, ack=10)
| |
| Send ACK(seq=21, ack=11)
Recv ACK(seq=21, ack=11)
|
Recv FIN(seq=20, ack=10)
In the case above, simultaneous close is happening, and the FIN and ACK
packet that send from the server is out of order. Then, the FIN will be
dropped by the client, as it has an old ack. Then, the server has to
retransmit the FIN, which can cause delay if the server has set the
SO_LINGER on the socket.
Old ack is accepted in the ESTABLISHED and TIME_WAIT state, and I think
it should be better to keep the same logic.
In this commit, we accept old ack in FIN_WAIT1/FIN_WAIT2/CLOSING/LAST_ACK
states. Maybe we should limit it to FIN_WAIT1 for now?
Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240126040519.1846345-1-menglong8.dong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Make sure the rpc timeout was assigned with the correct value for
initial timeout and max number of retries.
Fixes: 57331a59ac ("NFSv4.1: Use the nfs_client's rpc timeouts for backchannel")
Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Same patch as previous one, but for ebtables.
To build a kernel that only supports ebtables-nft, the builtin tables
need to be disabled, i.e.:
CONFIG_BRIDGE_EBT_BROUTE=n
CONFIG_BRIDGE_EBT_T_FILTER=n
CONFIG_BRIDGE_EBT_T_NAT=n
The ebtables specific extensions can then be used nftables'
NFT_COMPAT interface.
Signed-off-by: Florian Westphal <fw@strlen.de>
Add hidden IP(6)_NF_IPTABLES_LEGACY symbol.
When any of the "old" builtin tables are enabled the "old" iptables
interface will be supported.
To disable the old set/getsockopt interface the existing options
for the builtin tables need to be turned off:
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_FILTER is not set
CONFIG_IP_NF_NAT is not set
CONFIG_IP_NF_MANGLE is not set
CONFIG_IP_NF_RAW is not set
CONFIG_IP_NF_SECURITY is not set
Same for CONFIG_IP6_NF_ variants.
This allows to build a kernel that only supports ip(6)tables-nft
(iptables-over-nftables api).
In the future the _LEGACY symbol will become visible and the select
statements will be turned into 'depends on', but for now be on safe side
so "make oldconfig" won't break things.
Signed-off-by: Florian Westphal <fw@strlen.de>
Allows to build kernel that supports the arptables mangle target
via nftables' compat infra but without the arptables get/setsockopt
interface or the old arptables filter interpreter.
IOW, setting IP_NF_ARPFILTER=n will break arptables-legacy, but
arptables-nft will continue to work as long as nftables compat
support is enabled.
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Phil Sutter <phil@nwl.cc>
Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
to simplify the creation of SLAB caches.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Acked-by: Simon Horman <horms@kernel.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
to simplify the creation of SLAB caches.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Signed-off-by: Florian Westphal <fw@strlen.de>
No need to refetch the flag from the netlink attribute, pass the
existing flags variable which already provide validated flags.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Allow a new process to take ownership of a previously owned table,
useful mostly for firewall management services restarting or suspending
when idle.
By extending __NFT_TABLE_F_UPDATE, the on/off/on check in
nf_tables_updtable() also covers table adoption, although it is actually
not needed: Table adoption is irreversible because nf_tables_updtable()
rejects attempts to drop NFT_TABLE_F_OWNER so table->nlpid setting can
happen just once within the transaction.
If the transaction commences, table's nlpid and flags fields are already
set and no further action is required. If it aborts, the table returns
to orphaned state.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
This companion flag to NFT_TABLE_F_OWNER requests the kernel to keep the
table around after the process has exited. It marks such table as
orphaned (by dropping OWNER flag but keeping PERSIST flag in place),
which opens it for other processes to manipulate. For the sake of
simplicity, PERSIST flag may not be altered though.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
We had to add another synchronize_rcu() in recent fix.
Bite the bullet and add an rcu_head to netdev_name_node,
free from RCU.
Note that name_node does not hold any reference on dev
to which it points, but there must be a synchronize_rcu()
on device removal path, so we should be fine.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to ieee802154 modules.
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
As of now, the field TCA_TAPRIO_ATTR_FLAGS is being validated by manually
checking its value, using the function taprio_flags_valid().
With this patch, the field will be validated through the netlink policy
NLA_POLICY_MASK, where the mask is defined by TAPRIO_SUPPORTED_FLAGS.
The mutual exclusivity of the two flags TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD
and TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST is still checked manually.
Changes since RFC:
- fixed reversed xmas tree
- use NL_SET_ERR_MSG_MOD() for both invalid configuration
Changes since v1:
- Changed NL_SET_ERR_MSG_MOD to NL_SET_ERR_MSG_ATTR when wrong flags
issued
- Changed __u32 to u32
Changes since v2:
- Added the missing parameter for NL_SET_ERR_MSG_ATTR (sorry again for
the noise)
Signed-off-by: Alessandro Marcolini <alessandromarcolini99@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
TCP rx zerocopy intent is to map pages initially allocated
from NIC drivers, not pages owned by a fs.
This patch adds to can_map_frag() these additional checks:
- Page must not be a compound one.
- page->mapping must be NULL.
This fixes the panic reported by ZhangPeng.
syzbot was able to loopback packets built with sendfile(),
mapping pages owned by an ext4 file to TCP rx zerocopy.
r3 = socket$inet_tcp(0x2, 0x1, 0x0)
mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000, 0x0, 0x12, r3, 0x0)
r4 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r4, &(0x7f0000000000)={0x2, 0x4e24, @multicast1}, 0x10)
connect$inet(r4, &(0x7f00000006c0)={0x2, 0x4e24, @empty}, 0x10)
r5 = openat$dir(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00',
0x181e42, 0x0)
fallocate(r5, 0x0, 0x0, 0x85b8)
sendfile(r4, r5, 0x0, 0x8ba0)
getsockopt$inet_tcp_TCP_ZEROCOPY_RECEIVE(r4, 0x6, 0x23,
&(0x7f00000001c0)={&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0}, &(0x7f0000000440)=0x40)
r6 = openat$dir(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00',
0x181e42, 0x0)
Fixes: 93ab6cc691 ("tcp: implement mmap() for zero copy receive")
Link: https://lore.kernel.org/netdev/5106a58e-04da-372a-b836-9d3d0bd2507b@huawei.com/T/
Reported-and-bisected-by: ZhangPeng <zhangpeng362@huawei.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Arjun Roy <arjunroy@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
rx_data_reassembly skb is stored during NCI data exchange for processing
fragmented packets. It is dropped only when the last fragment is processed
or when an NTF packet with NCI_OP_RF_DEACTIVATE_NTF opcode is received.
However, the NCI device may be deallocated before that which leads to skb
leak.
As by design the rx_data_reassembly skb is bound to the NCI device and
nothing prevents the device to be freed before the skb is processed in
some way and cleaned, free it on the NCI device cleanup.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Fixes: 6a2968aaf5 ("NFC: basic NCI protocol implementation")
Cc: stable@vger.kernel.org
Reported-by: syzbot+6b7c68d9c21e4ee4251b@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/lkml/000000000000f43987060043da7b@google.com/
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Syzkaller reported [1] hitting a warning after failing to allocate
resources for skb in hsr_init_skb(). Since a WARN_ONCE() call will
not help much in this case, it might be prudent to switch to
netdev_warn_once(). At the very least it will suppress syzkaller
reports such as [1].
Just in case, use netdev_warn_once() in send_prp_supervision_frame()
for similar reasons.
[1]
HSR: Could not send supervision frame
WARNING: CPU: 1 PID: 85 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:294
RIP: 0010:send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:294
...
Call Trace:
<IRQ>
hsr_announce+0x114/0x370 net/hsr/hsr_device.c:382
call_timer_fn+0x193/0x590 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb20 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x21a/0x8de kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
...
This issue is also found in older kernels (at least up to 5.10).
Cc: stable@vger.kernel.org
Reported-by: syzbot+3ae0a3f42c84074b7c8e@syzkaller.appspotmail.com
Fixes: 121c33b07b ("net: hsr: introduce common code for skb initialization")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
The batman-adv multicast tracker TVLV handler is registered for the
new batman-adv multicast packet type upon creating a batman-adv interface,
but not unregistered again upon the interface's deletion, leading to a
memory leak.
Fix this memory leak by calling the according TVLV handler unregister
routine for the multicast tracker TVLV upon batman-adv interface
deletion.
Fixes: 07afe1ba28 ("batman-adv: mcast: implement multicast packet reception and forwarding")
Reported-and-tested-by: syzbot+ebe64cc5950868e77358@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000beadc4060f0cbc23@google.com/
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
When a node which does not have the new batman-adv multicast packet type
capability vanishes then the according, global counter erroneously would
not be reduced in response on other nodes. Which in turn leads to the mesh
never switching back to sending with the new multicast packet type.
Fix this by reducing the according counter when such a node times out.
Fixes: 9003913322 ("batman-adv: mcast: implement multicast packet generation")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2024-01-26
We've added 107 non-merge commits during the last 4 day(s) which contain
a total of 101 files changed, 6009 insertions(+), 1260 deletions(-).
The main changes are:
1) Add BPF token support to delegate a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application. With addressed changes from Christian
and Linus' reviews, from Andrii Nakryiko.
2) Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops type,
from Kui-Feng Lee.
3) Add support for retrieval of cookies for perf/kprobe multi links,
from Jiri Olsa.
4) Bigger batch of prep-work for the BPF verifier to eventually support
preserving boundaries and tracking scalars on narrowing fills,
from Maxim Mikityanskiy.
5) Extend the tc BPF flavor to support arbitrary TCP SYN cookies to help
with the scenario of SYN floods, from Kuniyuki Iwashima.
6) Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF objects,
from Hou Tao.
7) Extend BPF verifier to track aligned ST stores as imprecise spilled
registers, from Yonghong Song.
8) Several fixes to BPF selftests around inline asm constraints and
unsupported VLA code generation, from Jose E. Marchesi.
9) Various updates to the BPF IETF instruction set draft document such
as the introduction of conformance groups for instructions,
from Dave Thaler.
10) Fix BPF verifier to make infinite loop detection in is_state_visited()
exact to catch some too lax spill/fill corner cases,
from Eduard Zingerman.
11) Refactor the BPF verifier pointer ALU check to allow ALU explicitly
instead of implicitly for various register types, from Hao Sun.
12) Fix the flaky tc_redirect_dtime BPF selftest due to slowness
in neighbor advertisement at setup time, from Martin KaFai Lau.
13) Change BPF selftests to skip callback tests for the case when the
JIT is disabled, from Tiezhu Yang.
14) Add a small extension to libbpf which allows to auto create
a map-in-map's inner map, from Andrey Grafin.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (107 commits)
selftests/bpf: Add missing line break in test_verifier
bpf, docs: Clarify definitions of various instructions
bpf: Fix error checks against bpf_get_btf_vmlinux().
bpf: One more maintainer for libbpf and BPF selftests
selftests/bpf: Incorporate LSM policy to token-based tests
selftests/bpf: Add tests for LIBBPF_BPF_TOKEN_PATH envvar
libbpf: Support BPF token path setting through LIBBPF_BPF_TOKEN_PATH envvar
selftests/bpf: Add tests for BPF object load with implicit token
selftests/bpf: Add BPF object loading tests with explicit token passing
libbpf: Wire up BPF token support at BPF object level
libbpf: Wire up token_fd into feature probing logic
libbpf: Move feature detection code into its own file
libbpf: Further decouple feature checking logic from bpf_object
libbpf: Split feature detectors definitions from cached results
selftests/bpf: Utilize string values for delegate_xxx mount options
bpf: Support symbolic BPF FS delegation mount options
bpf: Fail BPF_TOKEN_CREATE if no delegation option was set on BPF FS
bpf,selinux: Allocate bpf_security_struct per BPF token
selftests/bpf: Add BPF token-enabled tests
libbpf: Add BPF token support to bpf_prog_load() API
...
====================
Link: https://lore.kernel.org/r/20240126215710.19855-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
