So far, if the filter was too large to fit in the allocated skb, the
kernel did not return any error and stopped dumping. Modify the dumper
so that it returns -EMSGSIZE when a filter fails to dump and it is the
first filter in the skb. If we are not first, we will get a next chance
with more room.
I understand this is pretty near to being an API change, but the
original design (silent truncation) can be considered a bug.
Note: The error case can happen pretty easily if you create a filter
with 32 actions and have 4kb pages. Also recent versions of iproute try
to be clever with their buffer allocation size, which in turn leads to
Signed-off-by: Roman Kapl <code@rkapl.cz>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for TC mirred action.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack handling for a common used TC act function
"tcf_generic_walker()" to add an extack message on failures.
The tcf_generic_walker() function can fail if get a invalid command
different than DEL and GET. The naming "action" here is wrong, the
correct naming would be command.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for act walker callback api. This
prepares to handle extack support inside each specific act
implementation.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for act lookup callback api. This
prepares to handle extack support inside each specific act
implementation.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for act init callback api. This
prepares to handle extack support inside each specific act
implementation.
Based on work by David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for generic act handling. The extack
will be set deeper to each called function which is not part of netdev
core api.
Based on work by David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack to tcf_action_init and tcf_action_init_1
functions. These are necessary to make individual extack handling in
each act implementation.
Based on work by David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is used by subsequent patches. It fixes code style issues
caught by checkpatch.
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack to tcf_action_init and tcf_action_init_1
functions. These are necessary to make individual extack handling in
each act implementation.
Based on work by David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is used by subsequent patches. It fixes code style issues
caught by checkpatch.
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When tca_action_flush() calls the action walk() and gets an error,
a successful call to nla_nest_start() is not followed by a call to
nla_nest_cancel(). It's harmless, as the skb is freed in the error
path - but it's worth to fix this unbalance.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The offending commit wrongly assumes 1:1 mapping between block and q.
However, there are multiple blocks for a single q for classful qdiscs.
Since the obscure tc_u_common sharing mechanism expects it to be shared
among a qdisc, fix it by storing q pointer in case the block is not
shared.
Reported-by: Paweł Staszewski <pstaszewski@itcare.pl>
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Fixes: 7fa9d974f3 ("net: sched: cls_u32: use block instead of q in tc_u_common")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is pointless to set block->q for block which are shared among
multiple qdiscs. So remove the assignment in that case. Do a bit of code
reshuffle to make block->index initialized at that point so we can use
tcf_block_shared() helper.
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Fixes: 4861738775 ("net: sched: introduce shared filter blocks infrastructure")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
psched_net_ops only creates and destroyes /proc entry,
and safe to be executed in parallel with any foreigh
pernet_operations.
tcf_action_net_ops initializes and destructs tcf_action_net::egdev_ht,
which is not touched by foreign pernet_operations.
So, make them async.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Make allocations less aggressive in x_tables, from Minchal Hocko.
2) Fix netfilter flowtable Kconfig deps, from Pablo Neira Ayuso.
3) Fix connection loss problems in rtlwifi, from Larry Finger.
4) Correct DRAM dump length for some chips in ath10k driver, from Yu
Wang.
5) Fix ABORT handling in rxrpc, from David Howells.
6) Add SPDX tags to Sun networking drivers, from Shannon Nelson.
7) Some ipv6 onlink handling fixes, from David Ahern.
8) Netem packet scheduler interval calcualtion fix from Md. Islam.
9) Don't put crypto buffers on-stack in rxrpc, from David Howells.
10) Fix handling of error non-delivery status in netlink multicast
delivery over multiple namespaces, from Nicolas Dichtel.
11) Missing xdp flush in tuntap driver, from Jason Wang.
12) Synchonize RDS protocol netns/module teardown with rds object
management, from Sowini Varadhan.
13) Add nospec annotations to mpls, from Dan Williams.
14) Fix SKB truesize handling in TIPC, from Hoang Le.
15) Interrupt masking fixes in stammc from Niklas Cassel.
16) Don't allow ptr_ring objects to be sized outside of kmalloc's
limits, from Jason Wang.
17) Don't allow SCTP chunks to be built which will have a length
exceeding the chunk header's 16-bit length field, from Alexey
Kodanev.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (82 commits)
ibmvnic: Remove skb->protocol checks in ibmvnic_xmit
bpf: fix rlimit in reuseport net selftest
sctp: verify size of a new chunk in _sctp_make_chunk()
s390/qeth: fix SETIP command handling
s390/qeth: fix underestimated count of buffer elements
ptr_ring: try vmalloc() when kmalloc() fails
ptr_ring: fail early if queue occupies more than KMALLOC_MAX_SIZE
net: stmmac: remove redundant enable of PMT irq
net: stmmac: rename GMAC_INT_DEFAULT_MASK for dwmac4
net: stmmac: discard disabled flags in interrupt status register
ibmvnic: Reset long term map ID counter
tools/libbpf: handle issues with bpf ELF objects containing .eh_frames
selftests/bpf: add selftest that use test_libbpf_open
selftests/bpf: add test program for loading BPF ELF files
tools/libbpf: improve the pr_debug statements to contain section numbers
bpf: Sync kernel ABI header with tooling header for bpf_common.h
net: phy: fix phy_start to consider PHY_IGNORE_INTERRUPT
net: thunder: change q_len's type to handle max ring size
tipc: fix skb truesize/datasize ratio control
net/sched: cls_u32: fix cls_u32 on filter replace
...
Pull idr updates from Matthew Wilcox:
- test-suite improvements
- replace the extended API by improving the normal API
- performance improvement for IDRs which are 1-based rather than
0-based
- add documentation
* 'idr-2018-02-06' of git://git.infradead.org/users/willy/linux-dax:
idr: Add documentation
idr: Make 1-based IDRs more efficient
idr: Warn if old iterators see large IDs
idr: Rename idr_for_each_entry_ext
idr: Remove idr_alloc_ext
cls_u32: Convert to idr_alloc_u32
cls_u32: Reinstate cyclic allocation
cls_flower: Convert to idr_alloc_u32
cls_bpf: Convert to use idr_alloc_u32
cls_basic: Convert to use idr_alloc_u32
cls_api: Convert to idr_alloc_u32
net sched actions: Convert to use idr_alloc_u32
idr: Add idr_alloc_u32 helper
idr: Delete idr_find_ext function
idr: Delete idr_replace_ext function
idr: Delete idr_remove_ext function
IDR test suite: Check handling negative end correctly
idr test suite: Fix ida_test_random()
radix tree test suite: Remove ARRAY_SIZE
The following sequence is currently broken:
# tc qdisc add dev foo ingress
# tc filter replace dev foo protocol all ingress \
u32 match u8 0 0 action mirred egress mirror dev bar1
# tc filter replace dev foo protocol all ingress \
handle 800::800 pref 49152 \
u32 match u8 0 0 action mirred egress mirror dev bar2
Error: cls_u32: Key node flags do not match passed flags.
We have an error talking to the kernel, -1
The error comes from u32_change() when comparing new and
existing flags. The existing ones always contains one of
TCA_CLS_FLAGS_{,NOT}_IN_HW flag depending on offloading state.
These flags cannot be passed from userspace so the condition
(n->flags != flags) in u32_change() always fails.
Fix the condition so the flags TCA_CLS_FLAGS_NOT_IN_HW and
TCA_CLS_FLAGS_IN_HW are not taken into account.
Fixes: 24d3dc6d27 ("net/sched: cls_u32: Reflect HW offload status")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In Kernel 4.15.0+, Netem does not work properly.
Netem setup:
tc qdisc add dev h1-eth0 root handle 1: netem delay 10ms 2ms
Result:
PING 172.16.101.2 (172.16.101.2) 56(84) bytes of data.
64 bytes from 172.16.101.2: icmp_seq=1 ttl=64 time=22.8 ms
64 bytes from 172.16.101.2: icmp_seq=2 ttl=64 time=10.9 ms
64 bytes from 172.16.101.2: icmp_seq=3 ttl=64 time=10.9 ms
64 bytes from 172.16.101.2: icmp_seq=5 ttl=64 time=11.4 ms
64 bytes from 172.16.101.2: icmp_seq=6 ttl=64 time=11.8 ms
64 bytes from 172.16.101.2: icmp_seq=4 ttl=64 time=4303 ms
64 bytes from 172.16.101.2: icmp_seq=10 ttl=64 time=11.2 ms
64 bytes from 172.16.101.2: icmp_seq=11 ttl=64 time=10.3 ms
64 bytes from 172.16.101.2: icmp_seq=7 ttl=64 time=4304 ms
64 bytes from 172.16.101.2: icmp_seq=8 ttl=64 time=4303 ms
Patch:
(rnd % (2 * sigma)) - sigma was overflowing s32. After applying the
patch, I found following output which is desirable.
PING 172.16.101.2 (172.16.101.2) 56(84) bytes of data.
64 bytes from 172.16.101.2: icmp_seq=1 ttl=64 time=21.1 ms
64 bytes from 172.16.101.2: icmp_seq=2 ttl=64 time=8.46 ms
64 bytes from 172.16.101.2: icmp_seq=3 ttl=64 time=9.00 ms
64 bytes from 172.16.101.2: icmp_seq=4 ttl=64 time=11.8 ms
64 bytes from 172.16.101.2: icmp_seq=5 ttl=64 time=8.36 ms
64 bytes from 172.16.101.2: icmp_seq=6 ttl=64 time=11.8 ms
64 bytes from 172.16.101.2: icmp_seq=7 ttl=64 time=8.11 ms
64 bytes from 172.16.101.2: icmp_seq=8 ttl=64 time=10.0 ms
64 bytes from 172.16.101.2: icmp_seq=9 ttl=64 time=11.3 ms
64 bytes from 172.16.101.2: icmp_seq=10 ttl=64 time=11.5 ms
64 bytes from 172.16.101.2: icmp_seq=11 ttl=64 time=10.2 ms
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Most places in the kernel that we need to distinguish functions by the
type of their arguments, we use '_ul' as a suffix for the unsigned long
variant, not '_ext'. Also add kernel-doc.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
No real benefit to this classifier, but since we're allocating a u32
anyway, we should use this function.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Commit e7614370d6 ("net_sched: use idr to allocate u32 filter handles)
converted htid allocation to use the IDR. The ID allocated by this
scheme changes; it used to be cyclic, but now always allocates the
lowest available. The IDR supports cyclic allocation, so just use
the right function.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Use the new helper. Also untangle the error path, and in so doing
noticed that estimator generator failure would lead to us leaking an
ID. Fix that bug.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Changing idr_replace's 'id' argument to 'unsigned long' works for all
callers. Callers which passed a negative ID now get -ENOENT instead of
-EINVAL. No callers relied on this error value.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Li Shuang reported an Oops with cls_u32 due to an use-after-free
in u32_destroy_key(). The use-after-free can be triggered with:
dev=lo
tc qdisc add dev $dev root handle 1: htb default 10
tc filter add dev $dev parent 1: prio 5 handle 1: protocol ip u32 divisor 256
tc filter add dev $dev protocol ip parent 1: prio 5 u32 ht 800:: match ip dst\
10.0.0.0/8 hashkey mask 0x0000ff00 at 16 link 1:
tc qdisc del dev $dev root
Which causes the following kasan splat:
==================================================================
BUG: KASAN: use-after-free in u32_destroy_key.constprop.21+0x117/0x140 [cls_u32]
Read of size 4 at addr ffff881b83dae618 by task kworker/u48:5/571
CPU: 17 PID: 571 Comm: kworker/u48:5 Not tainted 4.15.0+ #87
Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.1.7 06/16/2016
Workqueue: tc_filter_workqueue u32_delete_key_freepf_work [cls_u32]
Call Trace:
dump_stack+0xd6/0x182
? dma_virt_map_sg+0x22e/0x22e
print_address_description+0x73/0x290
kasan_report+0x277/0x360
? u32_destroy_key.constprop.21+0x117/0x140 [cls_u32]
u32_destroy_key.constprop.21+0x117/0x140 [cls_u32]
u32_delete_key_freepf_work+0x1c/0x30 [cls_u32]
process_one_work+0xae0/0x1c80
? sched_clock+0x5/0x10
? pwq_dec_nr_in_flight+0x3c0/0x3c0
? _raw_spin_unlock_irq+0x29/0x40
? trace_hardirqs_on_caller+0x381/0x570
? _raw_spin_unlock_irq+0x29/0x40
? finish_task_switch+0x1e5/0x760
? finish_task_switch+0x208/0x760
? preempt_notifier_dec+0x20/0x20
? __schedule+0x839/0x1ee0
? check_noncircular+0x20/0x20
? firmware_map_remove+0x73/0x73
? find_held_lock+0x39/0x1c0
? worker_thread+0x434/0x1820
? lock_contended+0xee0/0xee0
? lock_release+0x1100/0x1100
? init_rescuer.part.16+0x150/0x150
? retint_kernel+0x10/0x10
worker_thread+0x216/0x1820
? process_one_work+0x1c80/0x1c80
? lock_acquire+0x1a5/0x540
? lock_downgrade+0x6b0/0x6b0
? sched_clock+0x5/0x10
? lock_release+0x1100/0x1100
? compat_start_thread+0x80/0x80
? do_raw_spin_trylock+0x190/0x190
? _raw_spin_unlock_irq+0x29/0x40
? trace_hardirqs_on_caller+0x381/0x570
? _raw_spin_unlock_irq+0x29/0x40
? finish_task_switch+0x1e5/0x760
? finish_task_switch+0x208/0x760
? preempt_notifier_dec+0x20/0x20
? __schedule+0x839/0x1ee0
? kmem_cache_alloc_trace+0x143/0x320
? firmware_map_remove+0x73/0x73
? sched_clock+0x5/0x10
? sched_clock_cpu+0x18/0x170
? find_held_lock+0x39/0x1c0
? schedule+0xf3/0x3b0
? lock_downgrade+0x6b0/0x6b0
? __schedule+0x1ee0/0x1ee0
? do_wait_intr_irq+0x340/0x340
? do_raw_spin_trylock+0x190/0x190
? _raw_spin_unlock_irqrestore+0x32/0x60
? process_one_work+0x1c80/0x1c80
? process_one_work+0x1c80/0x1c80
kthread+0x312/0x3d0
? kthread_create_worker_on_cpu+0xc0/0xc0
ret_from_fork+0x3a/0x50
Allocated by task 1688:
kasan_kmalloc+0xa0/0xd0
__kmalloc+0x162/0x380
u32_change+0x1220/0x3c9e [cls_u32]
tc_ctl_tfilter+0x1ba6/0x2f80
rtnetlink_rcv_msg+0x4f0/0x9d0
netlink_rcv_skb+0x124/0x320
netlink_unicast+0x430/0x600
netlink_sendmsg+0x8fa/0xd60
sock_sendmsg+0xb1/0xe0
___sys_sendmsg+0x678/0x980
__sys_sendmsg+0xc4/0x210
do_syscall_64+0x232/0x7f0
return_from_SYSCALL_64+0x0/0x75
Freed by task 112:
kasan_slab_free+0x71/0xc0
kfree+0x114/0x320
rcu_process_callbacks+0xc3f/0x1600
__do_softirq+0x2bf/0xc06
The buggy address belongs to the object at ffff881b83dae600
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 24 bytes inside of
4096-byte region [ffff881b83dae600, ffff881b83daf600)
The buggy address belongs to the page:
page:ffffea006e0f6a00 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0
flags: 0x17ffffc0008100(slab|head)
raw: 0017ffffc0008100 0000000000000000 0000000000000000 0000000100070007
raw: dead000000000100 dead000000000200 ffff880187c0e600 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff881b83dae500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff881b83dae580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff881b83dae600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff881b83dae680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff881b83dae700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
The problem is that the htnode is freed before the linked knodes and the
latter will try to access the first at u32_destroy_key() time.
This change addresses the issue using the htnode refcnt to guarantee
the correct free order. While at it also add a RCU annotation,
to keep sparse happy.
v1 -> v2: use rtnl_derefence() instead of RCU read locks
v2 -> v3:
- don't check refcnt in u32_destroy_hnode()
- cleaned-up u32_destroy() implementation
- cleaned-up code comment
v3 -> v4:
- dropped unneeded comment
Reported-by: Li Shuang <shuali@redhat.com>
Fixes: c0d378ef12 ("net_sched: use tcf_queue_work() in u32 filter")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In a couple of points of the control path, n->ht_down is currently
accessed without the required RCU annotation. The accesses are
safe, but sparse complaints. Since we already held the
rtnl lock, let use rtnl_dereference().
Fixes: a1b7c5fd7f ("net: sched: add cls_u32 offload hooks for netdevs")
Fixes: de5df63228 ("net: sched: cls_u32 changes to knode must appear atomic to readers")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If you take a GSO skb, and split it into packets, will the MAC
length (L2 + L3 + L4 headers + payload) of those packets be small
enough to fit within a given length?
Move skb_gso_mac_seglen() to skbuff.h with other related functions
like skb_gso_network_seglen() so we can use it, and then create
skb_gso_validate_mac_len to do the full calculation.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Blank help texts are probably either a typo, a Kconfig misunderstanding,
or some kind of half-committing to adding a help text (in which case a
TODO comment would be clearer, if the help text really can't be added
right away).
Best to remove them, IMO.
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
pfifo_fast used to drop based on qdisc_dev(qdisc)->tx_queue_len,
so we have to resize skb array when we change tx_queue_len.
Other qdiscs which read tx_queue_len are fine because they
all save it to sch->limit or somewhere else in qdisc during init.
They don't have to implement this, it is nicer if they do so
that users don't have to re-configure qdisc after changing
tx_queue_len.
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce a new qdisc ops ->change_tx_queue_len() so that
each qdisc could decide how to implement this if it wants.
Previously we simply read dev->tx_queue_len, after pfifo_fast
switches to skb array, we need this API to resize the skb array
when we change dev->tx_queue_len.
To avoid handling race conditions with TX BH, we need to
deactivate all TX queues before change the value and bring them
back after we are done, this also makes implementation easier.
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate extack on removal of offloaded filter. Don't pass
extack from error paths.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass offload flags to the new implementation of
tc_cls_common_offload_init(). Extack will now only
be set if user requested skip_sw. hnodes need to
hold onto the flags now to be able to reuse them
on filter removal.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate extack on removal of offloaded filter. Don't pass
extack from error paths.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass offload flags to the new implementation of
tc_cls_common_offload_init(). Extack will now only
be set if user requested skip_sw.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate extack on removal of offloaded filter. Don't pass
extack from error paths.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass offload flags to the new implementation of
tc_cls_common_offload_init(). Extack will now only
be set if user requested skip_sw.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate extack on removal of offloaded filter.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass offload flags to the new implementation of
tc_cls_common_offload_init(). Extack will now only
be set if user requested skip_sw.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
cls_bpf now guarantees that only device-bound programs are
allowed with skip_sw. The drivers no longer pay attention to
flags on filter load, therefore the bpf_offload member can be
removed. If flags are needed again they should probably be
added to struct tc_cls_common_offload instead.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rename the tc_cls_common_offload_init() helper function to
tc_cls_common_offload_init_deprecated() and add a new implementation
which also takes flags argument. We will only set extack if flags
indicate that offload is forced (skip_sw) otherwise driver errors
should be ignored, as they don't influence the overall filter
installation.
Note that we need the tc_skip_hw() helper for new version, therefore
it is added later in the file.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate extack to cls->destroy callbacks when called from
non-error paths. On error paths pass NULL to avoid overwriting
the failure message.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
'ptr' is shifted by the offset and then validated,
the memcmp should not add it a second time.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
use RCU instead of spin_{,unlock}_bh() to protect concurrent read/write on
act_csum configuration, to reduce the effects of contention in the data
path when multiple readers are present.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
use per-CPU counters, like other TC actions do, instead of maintaining one
set of stats across all cores. This allows updating act_csum stats without
the need of protecting them using spin_{,un}lock_bh() invocations.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add extack support for hardware offload of classifiers. In order
to achieve this, a pointer to a struct netlink_ext_ack is added to the
struct tc_cls_common_offload that is passed to the callback for setting
up the classifier. Function tc_cls_common_offload_init() is updated to
support initialization of this new attribute.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass the extack pointer obtained in the `->change()` filter operation to
cls_bpf_offload() and then to cls_bpf_offload_cmd(). This makes it
possible to use this extack pointer in drivers offloading BPF programs
in a future patch.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate the extack pointer from the `->change()` classifier operation
to the function used for filter replacement in cls_u32. This makes it
possible to use netlink extack messages in the future at replacement
time for this filter, although it is not used at this point.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate the extack pointer from the `->change()` classifier operation
to the function used for filter replacement in cls_matchall. This makes
it possible to use netlink extack messages in the future at replacement
time for this filter, although it is not used at this point.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Propagate the extack pointer from the `->change()` classifier operation
to the function used for filter replacement in cls_flower. This makes it
possible to use netlink extack messages in the future at replacement
time for this filter, although it is not used at this point.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Expose the number of times the link has been going UP or DOWN, and
update the "carrier_changes" counter to be the sum of these two events.
While at it, also update the sysfs-class-net documentation to cover:
carrier_changes (3.15), carrier_up_count (4.16) and carrier_down_count
(4.16)
Signed-off-by: David Decotigny <decot@googlers.com>
[Florian:
* rebase
* add documentation
* merge carrier_changes with up/down counters]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The BPF verifier conflict was some minor contextual issue.
The TUN conflict was less trivial. Cong Wang fixed a memory leak of
tfile->tx_array in 'net'. This is an skb_array. But meanwhile in
net-next tun changed tfile->tx_arry into tfile->tx_ring which is a
ptr_ring.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for the u32 classifier as example for
delete and init callback.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack handling for the tcf_change_indev function which
is common used by TC classifier implementations.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for classifier delete callback api. This
prepares to handle extack support inside each specific classifier
implementation.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The tcf_exts_validate function calls the act api change callback. For
preparing extack support for act api, this patch adds the extack as
parameter for this function which is common used in cls implementations.
Furthermore the tcf_exts_validate will call action init callback which
prepares the TC action subsystem for extack support.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for classifier change callback api. This
prepares to handle extack support inside each specific classifier
implementation.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for generic cls handling. The extack
will be set deeper to each called function which is not part of netdev
core api.
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch changes some code style issues pointed out by checkpatch
inside the TC cls subsystem.
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
gcc-4.4.4 has problems witn anon union initializers. Work around this.
net/sched/sch_prio.c: In function 'prio_dump_offload':
net/sched/sch_prio.c:260: error: unknown field 'stats' specified in initializer
net/sched/sch_prio.c:260: warning: initialization makes integer from pointer without a cast
net/sched/sch_prio.c:261: error: unknown field 'stats' specified in initializer
net/sched/sch_prio.c:261: warning: initialization makes integer from pointer without a cast
Fixes: 7fdb61b44c ("net: sch: prio: Add offload ability to PRIO qdisc")
Cc: Nogah Frankel <nogahf@mellanox.com>
Cc: Yuval Mintz <yuvalm@mellanox.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When tcm->tcm_ifindex == TCM_IFINDEX_MAGIC_BLOCK, parent is still passed
down but the value is never used. Compiler does not recognize it and
issues a warning. Silence it down initializing parent to 0.
Fixes: 7960d1daf2 ("net: sched: use block index as a handle instead of qdisc when block is shared")
Reported-by: David Miller <davem@davemloft.net>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Running the following sequence is currently broken:
# tc qdisc add dev foo clsact
# tc filter replace dev foo ingress prio 1 handle 1 bpf da obj bar.o
# tc filter replace dev foo ingress prio 1 handle 1 bpf da obj bar.o
RTNETLINK answers: Invalid argument
The normal expectation on kernel side is that the second command
succeeds replacing the existing program. However, what happens is
in cls_bpf_change(), we bail out with err in the second run in
cls_bpf_offload(). The EINVAL comes directly in cls_bpf_offload()
when comparing prog vs oldprog's gen_flags. In case of above
replace the new prog's gen_flags are 0, but the old ones are 8,
which means TCA_CLS_FLAGS_NOT_IN_HW is set (e.g. drivers not having
cls_bpf offload).
Fix 102740bd94 ("cls_bpf: fix offload assumptions after callback
conversion") in the following way: gen_flags from user space passed
down via netlink cannot include status flags like TCA_CLS_FLAGS_IN_HW
or TCA_CLS_FLAGS_NOT_IN_HW as opposed to oldprog that we previously
loaded. Therefore, it doesn't make any sense to include them in the
gen_flags comparison with the new prog before we even attempt to
offload. Thus, lets fix this before 4.15 goes out.
Fixes: 102740bd94 ("cls_bpf: fix offload assumptions after callback conversion")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Benefit from the previously introduced shared filter blocks
infrastructure and allow ingress and clsact qdisc instances to share
filter blocks. The block index is coming from userspace as qdisc option.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce two new attributes to be used for qdisc creation and dumping.
One for ingress block, one for egress block. Introduce a set of ops that
qdisc which supports block sharing would implement.
Passing block indexes in qdisc change is not supported yet and it is
checked and forbidded.
In future, these attributes are to be reused for specifying block
indexes for classes as well. As of this moment however, it is not
supported so a check is in place to forbid it.
Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As the tcm_ifindex with value TCM_IFINDEX_MAGIC_BLOCK is invalid ifindex,
use it to indicate that we work with block, instead of qdisc.
So if tcm_ifindex is set to TCM_IFINDEX_MAGIC_BLOCK, tcm_parent is used
to carry block_index.
If the block is set to be shared between at least 2 qdiscs, it is
forbidden to use the qdisc handle to add/delete filters. In that case,
userspace has to pass block_index.
Also, for dump of the filters, in case the block is shared in between at
least 2 qdiscs, the each filter is dumped with tcm_ifindex value
TCM_IFINDEX_MAGIC_BLOCK and tcm_parent set to block_index. That gives
the user clear indication, that the filter belongs to a shared block
and not only to one qdisc under which it is dumped.
Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
During block bind, we need to check tc offload feature. If it is
disabled yet still the block contains offloaded filters, forbid the
bind. Also forbid to register callback for a block that already
contains offloaded filters, as the play back is not supported now.
For keeping track of offloaded filters there is a new counter
introduced, alongside with couple of helpers called from cls_* code.
These helpers set and clear TCA_CLS_FLAGS_IN_HW flag.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Both are no longer used, so remove them.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Couple of classifiers call netif_keep_dst directly on q->dev. That is
not possible to do directly for shared blocke where multiple qdiscs are
owning the block. So introduce a infrastructure to keep track of the
block owners in list and use this list to implement block variant of
netif_keep_dst.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use block index in the messages instead.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow qdiscs to share filter blocks among them. Each qdisc type has to
use block get/put extended modifications that enable sharing.
Shared blocks are tracked within each net namespace and identified
by u32 index. This index is passed from user during the qdisc creation.
If user passes index that is not used by any other qdisc, new block
is created. If user passes index that is already used, the existing
block will be re-used.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
So far, there was possible only to register a single filter chain
pointer to block->chain[0]. However, when the blocks will get shareable,
we need to allow multiple filter chain pointers registration.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 0dfb33a0d7 ("sch_red: report backlog information") copied
child's backlog into RED's backlog. Back then RED did not maintain
its own backlog counts. This has changed after commit 2ccccf5fb4
("net_sched: update hierarchical backlog too") and commit d7f4f332f0
("sch_red: update backlog as well"). Copying is no longer necessary.
Tested:
$ tc -s qdisc show dev veth0
qdisc red 1: root refcnt 2 limit 400000b min 30000b max 30000b ecn
Sent 20942 bytes 221 pkt (dropped 0, overlimits 0 requeues 0)
backlog 1260b 14p requeues 14
marked 0 early 0 pdrop 0 other 0
qdisc tbf 2: parent 1: rate 1Kbit burst 15000b lat 3585.0s
Sent 20942 bytes 221 pkt (dropped 0, overlimits 138 requeues 0)
backlog 1260b 14p requeues 14
Recently RED offload was added. We need to make sure drivers don't
depend on resetting the stats. This means backlog should be treated
like any other statistic:
total_stat = new_hw_stat - prev_hw_stat;
Adjust mlxsw.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Nogah Frankel <nogahf@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While working on fixing another bug, I ran into the following panic
on arm64 by simply attaching clsact qdisc, adding a filter and running
traffic on ingress to it:
[...]
[ 178.188591] Unable to handle kernel read from unreadable memory at virtual address 810fb501f000
[ 178.197314] Mem abort info:
[ 178.200121] ESR = 0x96000004
[ 178.203168] Exception class = DABT (current EL), IL = 32 bits
[ 178.209095] SET = 0, FnV = 0
[ 178.212157] EA = 0, S1PTW = 0
[ 178.215288] Data abort info:
[ 178.218175] ISV = 0, ISS = 0x00000004
[ 178.222019] CM = 0, WnR = 0
[ 178.224997] user pgtable: 4k pages, 48-bit VAs, pgd = 0000000023cb3f33
[ 178.231531] [0000810fb501f000] *pgd=0000000000000000
[ 178.236508] Internal error: Oops: 96000004 [#1] SMP
[...]
[ 178.311855] CPU: 73 PID: 2497 Comm: ping Tainted: G W 4.15.0-rc7+ #5
[ 178.319413] Hardware name: FOXCONN R2-1221R-A4/C2U4N_MB, BIOS G31FB18A 03/31/2017
[ 178.326887] pstate: 60400005 (nZCv daif +PAN -UAO)
[ 178.331685] pc : __netif_receive_skb_core+0x49c/0xac8
[ 178.336728] lr : __netif_receive_skb+0x28/0x78
[ 178.341161] sp : ffff00002344b750
[ 178.344465] x29: ffff00002344b750 x28: ffff810fbdfd0580
[ 178.349769] x27: 0000000000000000 x26: ffff000009378000
[...]
[ 178.418715] x1 : 0000000000000054 x0 : 0000000000000000
[ 178.424020] Process ping (pid: 2497, stack limit = 0x000000009f0a3ff4)
[ 178.430537] Call trace:
[ 178.432976] __netif_receive_skb_core+0x49c/0xac8
[ 178.437670] __netif_receive_skb+0x28/0x78
[ 178.441757] process_backlog+0x9c/0x160
[ 178.445584] net_rx_action+0x2f8/0x3f0
[...]
Reason is that sch_ingress and sch_clsact are doing mini_qdisc_pair_init()
which sets up miniq pointers to cpu_{b,q}stats from the underlying qdisc.
Problem is that this cannot work since they are actually set up right after
the qdisc ->init() callback in qdisc_create(), so first packet going into
sch_handle_ingress() tries to call mini_qdisc_bstats_cpu_update() and we
therefore panic.
In order to fix this, allocation of {b,q}stats needs to happen before we
call into ->init(). In net-next, there's already such option through commit
d59f5ffa59 ("net: sched: a dflt qdisc may be used with per cpu stats").
However, the bug needs to be fixed in net still for 4.15. Thus, include
these bits to reduce any merge churn and reuse the static_flags field to
set TCQ_F_CPUSTATS, and remove the allocation from qdisc_create() since
there is no other user left. Prashant Bhole ran into the same issue but
for net-next, thus adding him below as well as co-author. Same issue was
also reported by Sandipan Das when using bcc.
Fixes: 46209401f8 ("net: core: introduce mini_Qdisc and eliminate usage of tp->q for clsact fastpath")
Reference: https://lists.iovisor.org/pipermail/iovisor-dev/2018-January/001190.html
Reported-by: Sandipan Das <sandipan@linux.vnet.ibm.com>
Co-authored-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Co-authored-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
/proc has been ignoring struct file_operations::owner field for 10 years.
Specifically, it started with commit 786d7e1612
("Fix rmmod/read/write races in /proc entries"). Notice the chunk where
inode->i_fop is initialized with proxy struct file_operations for
regular files:
- if (de->proc_fops)
- inode->i_fop = de->proc_fops;
+ if (de->proc_fops) {
+ if (S_ISREG(inode->i_mode))
+ inode->i_fop = &proc_reg_file_ops;
+ else
+ inode->i_fop = de->proc_fops;
+ }
VFS stopped pinning module at this point.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the ability to offload PRIO qdisc by using ndo_setup_tc.
There are three commands for PRIO offloading:
* TC_PRIO_REPLACE: handles set and tune
* TC_PRIO_DESTROY: handles qdisc destroy
* TC_PRIO_STATS: updates the qdiscs counters (given as reference)
Like RED qdisc, the indication of whether PRIO is being offloaded is being
set and updated as part of the dump function. It is so because the driver
could decide to offload or not based on the qdisc parent, which could
change without notifying the qdisc.
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change the value of the xstats requested from the driver for offloaded RED
to be incremental, like the normal stats.
It increases consistency - if a qdisc stops being offloaded its xstats
don't change.
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When dev_requeue_skb() is called with bulked skb list, only the
first skb of the list will be requeued to qdisc layer, and leak
the others without free them.
TCP is broken due to skb leak since no free skb will be considered
as still in the host queue and never be retransmitted. This happend
when dev_requeue_skb() called from qdisc_restart().
qdisc_restart
|-- dequeue_skb
|-- sch_direct_xmit()
|-- dev_requeue_skb() <-- skb may bluked
Fix dev_requeue_skb() to requeue the full bluked list. Also change
to use __skb_queue_tail() in __dev_requeue_skb() to avoid skb out
of order.
Fixes: a53851e2c3 ("net: sched: explicit locking in gso_cpu fallback")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to update lastuse to to the most updated value between what
is already set and the new value.
If HW matching fails, i.e. because of an issue, the stats are not updated
but it could be that software did match and updated lastuse.
Fixes: 5712bf9c5c ("net/sched: act_mirred: Use passed lastuse argument")
Fixes: 9fea47d93b ("net/sched: act_gact: Update statistics when offloaded to hardware")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the check of the offload state to after the qdisc dump action was
called, so the qdisc could update it if it was changed.
Fixes: 7a4fa29106 ("net: sched: Add TCA_HW_OFFLOAD")
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Update the offload flag, TCQ_F_OFFLOADED, in each dump call (and ignore
the offloading function return value in relation to this flag).
This is done because a qdisc is being initialized, and therefore offloaded
before being grafted. Since the ability of the driver to offload the qdisc
depends on its location, a qdisc can be offloaded and un-offloaded by graft
calls, that doesn't effect the qdisc itself.
Fixes: 428a68af3a ("net: sched: Move to new offload indication in RED"
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/ip6_gre.c is a case of parallel adds.
include/trace/events/tcp.h is a little bit more tricky. The removal
of in-trace-macro ifdefs in 'net' paralleled with moving
show_tcp_state_name and friends over to include/trace/events/sock.h
in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
If the qdisc is not found here, it is going to be created. Therefore,
this is not an error path. Remove the extack message set and don't
confuse user with error message in case the qdisc was created
successfully.
Fixes: 0921559811 ("net: sched: sch_api: handle generic qdisc errors")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2017-12-22
1) Separate ESP handling from segmentation for GRO packets.
This unifies the IPsec GSO and non GSO codepath.
2) Add asynchronous callbacks for xfrm on layer 2. This
adds the necessary infrastructure to core networking.
3) Allow to use the layer2 IPsec GSO codepath for software
crypto, all infrastructure is there now.
4) Also allow IPsec GSO with software crypto for local sockets.
5) Don't require synchronous crypto fallback on IPsec offloading,
it is not needed anymore.
6) Check for xdo_dev_state_free and only call it if implemented.
From Shannon Nelson.
7) Check for the required add and delete functions when a driver
registers xdo_dev_ops. From Shannon Nelson.
8) Define xfrmdev_ops only with offload config.
From Shannon Nelson.
9) Update the xfrm stats documentation.
From Shannon Nelson.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to check block for being null in both tcf_block_put and
tcf_block_put_ext.
Fixes: 343723dd51 ("net: sched: fix clsact init error path")
Reported-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The rcu_barrier_bh() in mini_qdisc_pair_swap() is to wait for
flying RCU callback installed by a previous mini_qdisc_pair_swap(),
however we miss it on the tp_head==NULL path, which leads to that
the RCU callback still uses miniq_old->rcu after it is freed together
with qdisc in qdisc_graft(). So just add it on that path too.
Fixes: 46209401f8 ("net: core: introduce mini_Qdisc and eliminate usage of tp->q for clsact fastpath ")
Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lots of overlapping changes. Also on the net-next side
the XDP state management is handled more in the generic
layers so undo the 'net' nfp fix which isn't applicable
in net-next.
Include a necessary change by Jakub Kicinski, with log message:
====================
cls_bpf no longer takes care of offload tracking. Make sure
netdevsim performs necessary checks. This fixes a warning
caused by TC trying to remove a filter it has not added.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for the drr qdisc implementation by
adding NL_SET_ERR_MSG in validation of user input.
Also it serves to illustrate a use case of how the infrastructure ops
api changes are to be used by individual qdiscs.
Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for the cbs qdisc implementation by
adding NL_SET_ERR_MSG in validation of user input.
Also it serves to illustrate a use case of how the infrastructure ops
api changes are to be used by individual qdiscs.
Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for the cbq qdisc implementation by
adding NL_SET_ERR_MSG in validation of user input.
Also it serves to illustrate a use case of how the infrastructure ops
api changes are to be used by individual qdiscs.
Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack support for the function qdisc_create_dflt which is
a common used function in the tc subsystem. Callers which are interested
in the receiving error can assign extack to get a more detailed
information why qdisc_create_dflt failed. The function qdisc_create_dflt
will also call an init callback which can fail by any per-qdisc specific
handling.
Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roman Kapl