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Add new data path. The TX is completely different, each packet
has multiple descriptor entries (between 2 and 32). TX ring is
divided into blocks 32 descriptor, and descritors of one packet
can't cross block bounds. The RX side is the same for now.
ABI version 5 or later is required. There is no support for
VLAN insertion on TX. XDP_TX action and AF_XDP zero-copy is not
implemented in NFDK path.
Changes to Jakub's work:
* Move statistics of hw_csum_tx after jumbo packet's segmentation.
* Set L3_CSUM flag to enable recaculating of L3 header checksum
in ipv4 case.
* Mark the case of TSO a packet with metadata prepended as
unsupported.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Xingfeng Hu <xingfeng.hu@corigine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Dianchao Wang <dianchao.wang@corigine.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Prepare for choosing data path based on the firmware version field.
Exploit one bit from the reserved byte in the firmware version field
as the data path type. We need the firmware version right after
vNIC is allocated, so it has to be read inside nfp_net_alloc(),
callers don't have to set it afterwards.
Following patches will bring the implementation of the second data
path.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure that features supported only by some of the data paths
are not enabled for all. Add a mask of supported features into
the data path op structure.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Newer versions of the PCIe microcode support writing back the
position of the TX pointer back into host memory. This speeds
up TX completions, because we avoid a read from device memory
(replacing PCIe read with DMA coherent read).
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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QCidx is not used on fast path, move it to the lower cacheline.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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New datapaths may use multiple descriptor units to describe
a single packet. Prepare for that by adding a descriptors
per simple frame constant into ring size calculations.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To reduce the coupling of slow path ring implementations and their
callers, use callbacks instead.
Changes to Jakub's work:
* Also use callbacks for xmit functions
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In preparation for support for a new datapath format move all
ring and fast path logic into separate files. It is basically
a verbatim move with some wrapping functions, no new structures
and functions added.
The current data path is called NFD3 from the initial version
of the driver ABI it used. The non-fast path, but ring related
functions are moved to nfp_net_dp.c file.
Changes to Jakub's work:
* Rebase on xsk related code.
* Split the patch, move the callback changes to next commit.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ring enable masks are 64bit long. Replace mask calculation from:
block_cnt == 64 ? 0xffffffffffffffffULL : (1 << block_cnt) - 1
with:
(U64_MAX >> (64 - block_cnt))
to simplify the code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Standalone ports use vid 0. Let the bridge use vid 1 when
"vlan_default_pvid 0" is set to avoid collisions. Since no
VLAN is created when default pvid is 0 this is set
at "PORT_ATTR_SET" and handled in the Switchdev fdb handler.
Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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allocated_mem is allocated by kcalloc(). The memory is set to zero.
It is unnecessary to call memset again.
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In calipso_map_cat_ntoh(), in the for loop, if the return value of
netlbl_bitmap_walk() is equal to (net_clen_bits - 1), when
netlbl_bitmap_walk() is called next time, out-of-bounds memory accesses
of bitmap[byte_offset] occurs.
The bug was found during fuzzing. The following is the fuzzing report
BUG: KASAN: slab-out-of-bounds in netlbl_bitmap_walk+0x3c/0xd0
Read of size 1 at addr ffffff8107bf6f70 by task err_OH/252
CPU: 7 PID: 252 Comm: err_OH Not tainted 5.17.0-rc7+ #17
Hardware name: linux,dummy-virt (DT)
Call trace:
dump_backtrace+0x21c/0x230
show_stack+0x1c/0x60
dump_stack_lvl+0x64/0x7c
print_address_description.constprop.0+0x70/0x2d0
__kasan_report+0x158/0x16c
kasan_report+0x74/0x120
__asan_load1+0x80/0xa0
netlbl_bitmap_walk+0x3c/0xd0
calipso_opt_getattr+0x1a8/0x230
calipso_sock_getattr+0x218/0x340
calipso_sock_getattr+0x44/0x60
netlbl_sock_getattr+0x44/0x80
selinux_netlbl_socket_setsockopt+0x138/0x170
selinux_socket_setsockopt+0x4c/0x60
security_socket_setsockopt+0x4c/0x90
__sys_setsockopt+0xbc/0x2b0
__arm64_sys_setsockopt+0x6c/0x84
invoke_syscall+0x64/0x190
el0_svc_common.constprop.0+0x88/0x200
do_el0_svc+0x88/0xa0
el0_svc+0x128/0x1b0
el0t_64_sync_handler+0x9c/0x120
el0t_64_sync+0x16c/0x170
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The flowtable object is already passed as argument to
nf_flow_table_iterate(), do use not data pointer to pass flowtable.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Already available through the flowtable object, remove it.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Eliminate anonymous module_init() and module_exit(), which can lead to
confusion or ambiguity when reading System.map, crashes/oops/bugs,
or an initcall_debug log.
Give each of these init and exit functions unique driver-specific
names to eliminate the anonymous names.
Example 1: (System.map)
ffffffff832fc78c t init
ffffffff832fc79e t init
ffffffff832fc8f8 t init
Example 2: (initcall_debug log)
calling init+0x0/0x12 @ 1
initcall init+0x0/0x12 returned 0 after 15 usecs
calling init+0x0/0x60 @ 1
initcall init+0x0/0x60 returned 0 after 2 usecs
calling init+0x0/0x9a @ 1
initcall init+0x0/0x9a returned 0 after 74 usecs
Fixes: f587de0e2feb ("[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper port")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if we can elide the load. Cancel if the new candidate
isn't identical to previous store.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The fib expression stores to a register, so we can't add empty stub.
Check that the register that is being written is in fact redundant.
In most cases, this is expected to cancel tracking as re-use is
unlikely.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if the destination register already contains the data that this
tunnel expression performs. This allows to skip this redundant operation.
If the destination contains a different selector, update the register
tracking information. This patch does not perform bitwise tracking.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if the destination register already contains the data that this
xfrm expression performs. This allows to skip this redundant operation.
If the destination contains a different selector, update the register
tracking information.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if the destination register already contains the data that this
socket expression performs. This allows to skip this redundant
operation. If the destination contains a different selector, update the
register tracking information.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The immediate expression might clobber existing data on the registers,
cancel register tracking for the destination register.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if the destination register already contains the data that this
osf expression performs. Always cancel register tracking for jhash since
this requires tracking multiple source registers in case of
concatenations. Perform register tracking (without bitwise) for symhash
since input does not come from source register.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Allow to recycle the previous output of the OS fingerprint expression
if flags and ttl are the same.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Random and increment are stateful, each invocation results in fresh output.
Cancel register tracking for these two expressions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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its enough to export the meta get reduce helper and then call it
from nft_meta_bridge too.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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In most cases, nft_lookup will be read-only, i.e. won't clobber
registers. In case of map, we need to cancel the registers that will
see stores.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Check if the destination register already contains the data that this ct
expression performs. This allows to skip this redundant operation. If
the destination contains a different selector, update the register
tracking information.
Export nft_expr_reduce_bitwise as a symbol since nft_ct might be
compiled as a module.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Output of expressions might be larger than one single register, this might
clobber existing data. Reset tracking for all destination registers that
required to store the expression output.
This patch adds three new helper functions:
- nft_reg_track_update: cancel previous register tracking and update it.
- nft_reg_track_cancel: cancel any previous register tracking info.
- __nft_reg_track_cancel: cancel only one single register tracking info.
Partial register clobbering detection is also supported by checking the
.num_reg field which describes the number of register that are used.
This patch updates the following expressions:
- meta_bridge
- bitwise
- byteorder
- meta
- payload
to use these helper functions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Skip register tracking for expressions that perform read-only operations
on the registers. Define and use a cookie pointer NFT_REDUCE_READONLY to
avoid defining stubs for these expressions.
This patch re-enables register tracking which was disabled in ed5f85d42290
("netfilter: nf_tables: disable register tracking"). Follow up patches
add remaining register tracking for existing expressions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The function sets the pernet boolean to avoid the spurious warning from
nf_ct_lookup_helper() when assigning conntrack helpers via nftables.
Fixes: 1a64edf54f55 ("netfilter: nft_ct: add helper set support")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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as of commit 4608fdfc07e1
("netfilter: conntrack: collect all entries in one cycle")
conntrack gc was changed to run every 2 minutes.
On systems where conntrack hash table is set to large value, most evictions
happen from gc worker rather than the packet path due to hash table
distribution.
This causes netlink event overflows when events are collected.
This change collects average expiry of scanned entries and
reschedules to the average remaining value, within 1 to 60 second interval.
To avoid event overflows, reschedule after each bucket and add a
limit for both run time and number of evictions per run.
If more entries have to be evicted, reschedule and restart 1 jiffy
into the future.
Reported-by: Karel Rericha <karel@maxtel.cz>
Cc: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Cc: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This code is fine, but it's easier to review if we use snprintf()
instead of sprintf().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Link: https://lore.kernel.org/r/20220318074723.GA6617@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The skb will be checked in kfree_skb(), so remove the outside check.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20220318072728.2659578-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Variable index is being assigned a value that is never read, it is being
re-assigned later in a following for-loop. The assignment is redundant
and can be removed.
Cleans up clang scan build warning:
drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c:1358:17: warning:
Although the value stored to 'index' is used in the enclosing expression,
the value is never actually read from 'index' [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220318012035.89482-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Variable sie is being assigned a value that is never read. The
The assignment is redundant and can be removed.
Cleans up clang scan build warning:
drivers/net/ethernet/atheros/atl1c/atl1c_main.c:1054:22: warning:
Although the value stored to 'size' is used in the enclosing
expression, the value is never actually read from 'size'
[deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220318005021.82073-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In some corner cases, the peer handing an incoming ADD_ADDR option, can
receive a retransmitted ADD_ADDR for the same address before the subflow
creation completes.
We can avoid the above issue by generating and sending the ADD_ADDR echo
before starting the MPJ subflow connection.
This slightly changes the behaviour of the packetdrill tests as the
ADD_ADDR echo packet is sent earlier.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Yonglong Li <liyonglong@chinatelecom.cn>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Link: https://lore.kernel.org/r/20220317221444.426335-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Let's remove unnecessary brackets around CONFIG_AF_UNIX_OOB.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Link: https://lore.kernel.org/r/20220317032308.65372-1-kuniyu@amazon.co.jp
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There is no function mlx5e_get_sq(), remove the declaration.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Moshe Tal <moshet@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
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Starting from commit
4cab346bcf74 ("net/mlx5: No command allowed when command interface is not ready"),
no calls to mlx5_cmd_trigger_completions() are external to cmd.c anymore.
Make it a static function.
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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After introducing multi-buffer XDP_TX, the MLX5E_XDP_TX_DS_COUNT define
became misleading. It's no longer the DS count of an XDP_TX WQE, this
WQE can be longer because of fragments.
As this define is only used at one place in mlx5e_open_xdpsq(), it's
also not very useful anymore. This commit removes the define and puts
the calculation of ds_count for prefilled single-fragment WQEs inline.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Now that legacy RQ implements XDP in the non-linear mode, stop blocking
this configuration. Allow non-linear mode only for programs aware of
multi buffer.
XDP performance with linear mode RQ hasn't changed.
Baseline (MTU 1500, TX MPWQE, legacy RQ, single core):
60-byte packets, XDP_DROP: 11.25 Mpps
60-byte packets, XDP_TX: 9.0 Mpps
60-byte packets, XDP_PASS: 668 kpps
Multi buffer (MTU 9000, TX MPWQE, legacy RQ, single core):
60-byte packets, XDP_DROP: 10.1 Mpps
60-byte packets, XDP_TX: 6.6 Mpps
60-byte packets, XDP_PASS: 658 kpps
8900-byte packets, XDP_DROP: 769 kpps (100% of sent packets)
8900-byte packets, XDP_TX: 674 kpps (100% of sent packets)
8900-byte packets, XDP_PASS: 637 kpps
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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This commit enables passing multi buffer XDP frames to the TX handlers
on XDP_TX. Fragments are DMA synchronized to the device and queued to
the xdpi_fifo for a subsequent unmapping.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The next commit will add more indentation levels to mlx5e_xmit_xdp_buff.
To keep indentation minimal, unindent the else-block of the if-statement
by doing an early return.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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xmit_xdp_frame is extended to support sending fragmented XDP frames. The
next commit will start using this functionality.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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When MPWQE is disabled, mlx5e_open_xdpsq() prefills the common fields of
WQEs in the XDP SQ to save time when sending packets.
mlx5e_xmit_xdp_frame() runs on the prefilled fields, however, sending
multi buffer XDP frames would require changing some of these fields on a
per-packet basis. Besides that, mlx5e_xmit_xdp_frame() will be used as a
fallback to send multi buffer XDP frames when MPWQE is enabled (MPWQE
can only handle linear packets).
In order to prepare for XDP multi buffer support, this commit introduces
a mode for mlx5e_xmit_xdp_frame() that fills all the fields itself.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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When MPWQE is disabled, mlx5e_open_xdpsq prefills the common fields of
WQEs in the XDP SQ to save time when sending packets. One of such fields
is eseg->inline_hdr.sz, which can be either 0 or MLX5E_XDP_MIN_INLINE,
depending on the inline mode of the SQ.
The inline mode can't change during the lifetime of the SQ, so setting
this field again in mlx5e_xmit_xdp_frame is redundant. Moreover, the
xmit function only sets it to MLX5E_XDP_MIN_INLINE, but not to 0 in the
other case.
This commit removes the redundant assignment in mlx5e_xmit_xdp_frame.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The implementations of xmit_xdp_frame get the xdpi parameter of type
struct mlx5e_xdp_info for the sole purpose of calling
mlx5e_xdpi_fifo_push() on success.
This commit moves this call outside of xmit_xdp_frame, shifting this
responsibility to the caller. It will allow more fine-grained handling
of XDP info for cases when an xdp_frame is fragmented.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Use page_pool_set_dma_addr() to store the DMA address of a page inside
struct page, in order to avoid passing struct mlx5e_dma_info to XDP
handlers. Previously, struct mlx5e_dma_info was used to pass both the
DMA address and the page, and it worked well for the single-fragment
case.
When XDP multi buffer is in use, and a fragmented xdp_frame has to be
transmitted, the driver needs to know the DMA addresses of fragments,
however, the array of fragments in struct skb_shared_info doesn't
contain them. In order to pass the DMA addresses, the driver puts them
into struct page itself, which is accessible from the array of fragments
in struct skb_shared_info. The existing XDP handlers are modified to
remove the dependency on struct mlx5e_dma_info.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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This commit adds XDP multi buffer support to the RX path in the
non-linear legacy RQ mode. mlx5e_xdp_handle is called from
mlx5e_skb_from_cqe_nonlinear.
XDP_TX action for fragmented XDP frames is not yet supported and
blocked.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The implementation of XDP in mlx5e assumes that the frame size is equal
to the page size. Force this limitation in the non-linear mode for XDP
multi buffer.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Jakub Kicinski
Casper Andersson
Wan Jiabing
Wang Yufen
Pablo Neira Ayuso
Randy Dunlap
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