Add a new header, linux/skbuff_ref.h, which contains all the skb_*_ref()
helpers. Many of the consumers of skbuff.h do not actually use any of
the skb ref helpers, and we can speed up compilation a bit by minimizing
this header file.
Additionally in the later patch in the series we add page_pool support
to skb_frag_ref(), which requires some page_pool dependencies. We can
now add these dependencies to skbuff_ref.h instead of a very ubiquitous
skbuff.h
Signed-off-by: Mina Almasry <almasrymina@google.com>
Link: https://lore.kernel.org/r/20240410190505.1225848-2-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth.
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one
file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in
bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State"
* tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (59 commits)
net: ena: Set tx_info->xdpf value to NULL
net: ena: Fix incorrect descriptor free behavior
net: ena: Wrong missing IO completions check order
net: ena: Fix potential sign extension issue
af_unix: Fix garbage collector racing against connect()
net: dsa: mt7530: trap link-local frames regardless of ST Port State
Revert "s390/ism: fix receive message buffer allocation"
net: sparx5: fix wrong config being used when reconfiguring PCS
net/mlx5: fix possible stack overflows
net/mlx5: Disallow SRIOV switchdev mode when in multi-PF netdev
net/mlx5e: RSS, Block XOR hash with over 128 channels
net/mlx5e: Do not produce metadata freelist entries in Tx port ts WQE xmit
net/mlx5e: HTB, Fix inconsistencies with QoS SQs number
net/mlx5e: Fix mlx5e_priv_init() cleanup flow
net/mlx5e: RSS, Block changing channels number when RXFH is configured
net/mlx5: Correctly compare pkt reformat ids
net/mlx5: Properly link new fs rules into the tree
net/mlx5: offset comp irq index in name by one
net/mlx5: Register devlink first under devlink lock
net/mlx5: E-switch, store eswitch pointer before registering devlink_param
...
The most important fix is the sg one because the regression it fixes
(spurious warning and use after final put) is already backported to
stable. The next biggest impact is the target fix for wrong
credentials used to load a module because it's affecting new kernels
installed on selinux based distributions. The other three fixes are
an obvious off by one and SATA protocol issues.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"The most important fix is the sg one because the regression it fixes
(spurious warning and use after final put) is already backported to
stable.
The next biggest impact is the target fix for wrong credentials used
to load a module because it's affecting new kernels installed on
selinux based distributions.
The other three fixes are an obvious off by one and SATA protocol
issues"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Fix off by one in qla_edif_app_getstats()
scsi: hisi_sas: Modify the deadline for ata_wait_after_reset()
scsi: hisi_sas: Handle the NCQ error returned by D2H frame
scsi: target: Fix SELinux error when systemd-modules loads the target module
scsi: sg: Avoid race in error handling & drop bogus warn
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Merge tag 'loongarch-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
- make {virt, phys, page, pfn} translation work with KFENCE for
LoongArch (otherwise NVMe and virtio-blk cannot work with KFENCE
enabled)
- update dts files for Loongson-2K series to make devices work
correctly
- fix a build error
* tag 'loongarch-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: Include linux/sizes.h in addrspace.h to prevent build errors
LoongArch: Update dts for Loongson-2K2000 to support GMAC/GNET
LoongArch: Update dts for Loongson-2K2000 to support PCI-MSI
LoongArch: Update dts for Loongson-2K2000 to support ISA/LPC
LoongArch: Update dts for Loongson-2K1000 to support ISA/LPC
LoongArch: Make virt_addr_valid()/__virt_addr_valid() work with KFENCE
LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE
mm: Move lowmem_page_address() a little later
Notable user impacting bugs
- On multi device filesystems, recovery was looping in
btree_trans_too_many_iters(). This checks if a transaction has touched
too many btree paths (because of iteration over many keys), and isuses
a restart to drop unneeded paths. But it's now possible for some paths
to exceed the previous limit without iteration in the interior btree
update path, since the transaction commit will do alloc updates for
every old and new btree node, and during journal replay we don't use
the btree write buffer for locking reasons and thus those updates use
btree paths when they wouldn't normally.
- Fix a corner case in rebalance when moving extents on a durability=0
device. This wouldn't be hit when a device was formatted with
durability=0 since in that case we'll only use it as a write through
cache (only cached extents will live on it), but durability can now be
changed on an existing device.
- bch2_get_acl() could rarely forget to handle a transaction restart;
this manifested as the occasional missing acl that came back after
dropping caches.
- Fix a major performance regression on high iops multithreaded write
workloads (only since 6.9-rc1); a previous fix for a deadlock in the
interior btree update path to check the journal watermark introduced a
dependency on the state of btree write buffer flushing that we didn't
want.
- Assorted other repair paths and recovery fixes.
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Merge tag 'bcachefs-2024-04-10' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs fixes from Kent Overstreet:
"Notable user impacting bugs
- On multi device filesystems, recovery was looping in
btree_trans_too_many_iters(). This checks if a transaction has
touched too many btree paths (because of iteration over many keys),
and isuses a restart to drop unneeded paths.
But it's now possible for some paths to exceed the previous limit
without iteration in the interior btree update path, since the
transaction commit will do alloc updates for every old and new
btree node, and during journal replay we don't use the btree write
buffer for locking reasons and thus those updates use btree paths
when they wouldn't normally.
- Fix a corner case in rebalance when moving extents on a
durability=0 device. This wouldn't be hit when a device was
formatted with durability=0 since in that case we'll only use it as
a write through cache (only cached extents will live on it), but
durability can now be changed on an existing device.
- bch2_get_acl() could rarely forget to handle a transaction restart;
this manifested as the occasional missing acl that came back after
dropping caches.
- Fix a major performance regression on high iops multithreaded write
workloads (only since 6.9-rc1); a previous fix for a deadlock in
the interior btree update path to check the journal watermark
introduced a dependency on the state of btree write buffer flushing
that we didn't want.
- Assorted other repair paths and recovery fixes"
* tag 'bcachefs-2024-04-10' of https://evilpiepirate.org/git/bcachefs: (25 commits)
bcachefs: Fix __bch2_btree_and_journal_iter_init_node_iter()
bcachefs: Kill read lock dropping in bch2_btree_node_lock_write_nofail()
bcachefs: Fix a race in btree_update_nodes_written()
bcachefs: btree_node_scan: Respect member.data_allowed
bcachefs: Don't scan for btree nodes when we can reconstruct
bcachefs: Fix check_topology() when using node scan
bcachefs: fix eytzinger0_find_gt()
bcachefs: fix bch2_get_acl() transaction restart handling
bcachefs: fix the count of nr_freed_pcpu after changing bc->freed_nonpcpu list
bcachefs: Fix gap buffer bug in bch2_journal_key_insert_take()
bcachefs: Rename struct field swap to prevent macro naming collision
MAINTAINERS: Add entry for bcachefs documentation
Documentation: filesystems: Add bcachefs toctree
bcachefs: JOURNAL_SPACE_LOW
bcachefs: Disable errors=panic for BCH_IOCTL_FSCK_OFFLINE
bcachefs: Fix BCH_IOCTL_FSCK_OFFLINE for encrypted filesystems
bcachefs: fix rand_delete unit test
bcachefs: fix ! vs ~ typo in __clear_bit_le64()
bcachefs: Fix rebalance from durability=0 device
bcachefs: Print shutdown journal sequence number
...
This patch adds a new helper chk_msk_info() to show the counters in
mptcp_info of the given info, and check that the timestamps move
forward. Use it to show newly added last_data_sent, last_data_recv
and last_ack_recv in mptcp_info in chk_last_time_info().
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240410-upstream-net-next-20240405-mptcp-last-time-info-v2-2-f95bd6b33e51@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds "last time" fields last_data_sent, last_data_recv and
last_ack_recv in struct mptcp_sock to record the last time data_sent,
data_recv and ack_recv happened. They all are initialized as
tcp_jiffies32 in __mptcp_init_sock(), and updated as tcp_jiffies32 too
when data is sent in __subflow_push_pending(), data is received in
__mptcp_move_skbs_from_subflow(), and ack is received in ack_update_msk().
Similar to tcpi_last_data_sent, tcpi_last_data_recv and tcpi_last_ack_recv
exposed with TCP, this patch exposes the last time "an action happened" for
MPTCP in mptcp_info, named mptcpi_last_data_sent, mptcpi_last_data_recv and
mptcpi_last_ack_recv, calculated in mptcp_diag_fill_info() as the time
deltas between now and the newly added last time fields in mptcp_sock.
Since msk->last_ack_recv needs to be protected by mptcp_data_lock/unlock,
and lock_sock_fast can sleep and be quite slow, move the entire
mptcp_data_lock/unlock block after the lock/unlock_sock_fast block.
Then mptcpi_last_data_sent and mptcpi_last_data_recv are set in
lock/unlock_sock_fast block, while mptcpi_last_ack_recv is set in
mptcp_data_lock/unlock block, which is protected by a spinlock and
should not block for too long.
Also add three reserved bytes in struct mptcp_info not to have holes in
this structure exposed to userspace.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/446
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240410-upstream-net-next-20240405-mptcp-last-time-info-v2-1-f95bd6b33e51@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Erick Archer says:
====================
mana: Add flex array to struct mana_cfg_rx_steer_req_v2 (part)
The "struct mana_cfg_rx_steer_req_v2" uses a dynamically sized set of
trailing elements. Specifically, it uses a "mana_handle_t" array. So,
use the preferred way in the kernel declaring a flexible array [1].
At the same time, prepare for the coming implementation by GCC and Clang
of the __counted_by attribute. Flexible array members annotated with
__counted_by can have their accesses bounds-checked at run-time via
CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for
strcpy/memcpy-family functions).
Also, avoid the open-coded arithmetic in the memory allocator functions
[2] using the "struct_size" macro.
Moreover, use the "offsetof" helper to get the indirect table offset
instead of the "sizeof" operator and avoid the open-coded arithmetic in
pointers using the new flex member. This new structure member also allow
us to remove the "req_indir_tab" variable since it is no longer needed.
Now, it is also possible to use the "flex_array_size" helper to compute
the size of these trailing elements in the "memcpy" function.
Specifically, the first commit adds the flex member and the patches 2 and
3 refactor the consumers of the "struct mana_cfg_rx_steer_req_v2".
This code was detected with the help of Coccinelle, and audited and
modified manually. The Coccinelle script used to detect this code pattern
is the following:
virtual report
@rule1@
type t1;
type t2;
identifier i0;
identifier i1;
identifier i2;
identifier ALLOC =~ "kmalloc|kzalloc|kmalloc_node|kzalloc_node|vmalloc|vzalloc|kvmalloc|kvzalloc";
position p1;
@@
i0 = sizeof(t1) + sizeof(t2) * i1;
...
i2 = ALLOC@p1(..., i0, ...);
@script:python depends on report@
p1 << rule1.p1;
@@
msg = "WARNING: verify allocation on line %s" % (p1[0].line)
coccilib.report.print_report(p1[0],msg)
Link: https://www.kernel.org/doc/html/next/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2]
v1: https://lore.kernel.org/linux-hardening/AS8PR02MB7237974EF1B9BAFA618166C38B382@AS8PR02MB7237.eurprd02.prod.outlook.com/
v2: https://lore.kernel.org/linux-hardening/AS8PR02MB723729C5A63F24C312FC9CD18B3F2@AS8PR02MB7237.eurprd02.prod.outlook.com/
====================
Link: https://lore.kernel.org/r/AS8PR02MB72374BD1B23728F2E3C3B1A18B022@AS8PR02MB7237.eurprd02.prod.outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is an effort to get rid of all multiplications from allocation
functions in order to prevent integer overflows [1][2].
As the "req" variable is a pointer to "struct mana_cfg_rx_steer_req_v2"
and this structure ends in a flexible array:
struct mana_cfg_rx_steer_req_v2 {
[...]
mana_handle_t indir_tab[] __counted_by(num_indir_entries);
};
the preferred way in the kernel is to use the struct_size() helper to
do the arithmetic instead of the calculation "size + size * count" in
the kzalloc() function.
Moreover, use the "offsetof" helper to get the indirect table offset
instead of the "sizeof" operator and avoid the open-coded arithmetic in
pointers using the new flex member. This new structure member also allow
us to remove the "req_indir_tab" variable since it is no longer needed.
Now, it is also possible to use the "flex_array_size" helper to compute
the size of these trailing elements in the "memcpy" function.
This way, the code is more readable and safer.
This code was detected with the help of Coccinelle, and audited and
modified manually.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1]
Link: https://github.com/KSPP/linux/issues/160 [2]
Signed-off-by: Erick Archer <erick.archer@outlook.com>
Link: https://lore.kernel.org/r/AS8PR02MB7237A21355C86EC0DCC0D83B8B022@AS8PR02MB7237.eurprd02.prod.outlook.com
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This is an effort to get rid of all multiplications from allocation
functions in order to prevent integer overflows [1][2].
As the "req" variable is a pointer to "struct mana_cfg_rx_steer_req_v2"
and this structure ends in a flexible array:
struct mana_cfg_rx_steer_req_v2 {
[...]
mana_handle_t indir_tab[] __counted_by(num_indir_entries);
};
the preferred way in the kernel is to use the struct_size() helper to
do the arithmetic instead of the calculation "size + size * count" in
the kzalloc() function.
Moreover, use the "offsetof" helper to get the indirect table offset
instead of the "sizeof" operator and avoid the open-coded arithmetic in
pointers using the new flex member. This new structure member also allow
us to remove the "req_indir_tab" variable since it is no longer needed.
This way, the code is more readable and safer.
This code was detected with the help of Coccinelle, and audited and
modified manually.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1]
Link: https://github.com/KSPP/linux/issues/160 [2]
Signed-off-by: Erick Archer <erick.archer@outlook.com>
Link: https://lore.kernel.org/r/AS8PR02MB72375EB06EE1A84A67BE722E8B022@AS8PR02MB7237.eurprd02.prod.outlook.com
Reviewed-by: Long Li <longli@microsoft.com>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
The "struct mana_cfg_rx_steer_req_v2" uses a dynamically sized set of
trailing elements. Specifically, it uses a "mana_handle_t" array. So,
use the preferred way in the kernel declaring a flexible array [1].
At the same time, prepare for the coming implementation by GCC and Clang
of the __counted_by attribute. Flexible array members annotated with
__counted_by can have their accesses bounds-checked at run-time via
CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for
strcpy/memcpy-family functions).
This is a previous step to refactor the two consumers of this structure.
drivers/infiniband/hw/mana/qp.c
drivers/net/ethernet/microsoft/mana/mana_en.c
The ultimate goal is to avoid the open-coded arithmetic in the memory
allocator functions [2] using the "struct_size" macro.
Link: https://www.kernel.org/doc/html/next/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2]
Signed-off-by: Erick Archer <erick.archer@outlook.com>
Link: https://lore.kernel.org/r/AS8PR02MB7237E2900247571C9CB84C678B022@AS8PR02MB7237.eurprd02.prod.outlook.com
Reviewed-by: Long Li <longli@microsoft.com>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
David Arinzon says:
====================
ENA driver bug fixes
From: David Arinzon <darinzon@amazon.com>
This patchset contains multiple bug fixes for the
ENA driver.
====================
Link: https://lore.kernel.org/r/20240410091358.16289-1-darinzon@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The patch mentioned in the `Fixes` tag removed the explicit assignment
of tx_info->xdpf to NULL with the justification that there's no need
to set tx_info->xdpf to NULL and tx_info->num_of_bufs to 0 in case
of a mapping error. Both values won't be used once the mapping function
returns an error, and their values would be overridden by the next
transmitted packet.
While both values do indeed get overridden in the next transmission
call, the value of tx_info->xdpf is also used to check whether a TX
descriptor's transmission has been completed (i.e. a completion for it
was polled).
An example scenario:
1. Mapping failed, tx_info->xdpf wasn't set to NULL
2. A VF reset occurred leading to IO resource destruction and
a call to ena_free_tx_bufs() function
3. Although the descriptor whose mapping failed was freed by the
transmission function, it still passes the check
if (!tx_info->skb)
(skb and xdp_frame are in a union)
4. The xdp_frame associated with the descriptor is freed twice
This patch returns the assignment of NULL to tx_info->xdpf to make the
cleaning function knows that the descriptor is already freed.
Fixes: 504fd6a539 ("net: ena: fix DMA mapping function issues in XDP")
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
ENA has two types of TX queues:
- queues which only process TX packets arriving from the network stack
- queues which only process TX packets forwarded to it by XDP_REDIRECT
or XDP_TX instructions
The ena_free_tx_bufs() cycles through all descriptors in a TX queue
and unmaps + frees every descriptor that hasn't been acknowledged yet
by the device (uncompleted TX transactions).
The function assumes that the processed TX queue is necessarily from
the first category listed above and ends up using napi_consume_skb()
for descriptors belonging to an XDP specific queue.
This patch solves a bug in which, in case of a VF reset, the
descriptors aren't freed correctly, leading to crashes.
Fixes: 548c4940b9 ("net: ena: Implement XDP_TX action")
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Missing IO completions check is called every second (HZ jiffies).
This commit fixes several issues with this check:
1. Duplicate queues check:
Max of 4 queues are scanned on each check due to monitor budget.
Once reaching the budget, this check exits under the assumption that
the next check will continue to scan the remainder of the queues,
but in practice, next check will first scan the last already scanned
queue which is not necessary and may cause the full queue scan to
last a couple of seconds longer.
The fix is to start every check with the next queue to scan.
For example, on 8 IO queues:
Bug: [0,1,2,3], [3,4,5,6], [6,7]
Fix: [0,1,2,3], [4,5,6,7]
2. Unbalanced queues check:
In case the number of active IO queues is not a multiple of budget,
there will be checks which don't utilize the full budget
because the full scan exits when reaching the last queue id.
The fix is to run every TX completion check with exact queue budget
regardless of the queue id.
For example, on 7 IO queues:
Bug: [0,1,2,3], [4,5,6], [0,1,2,3]
Fix: [0,1,2,3], [4,5,6,0], [1,2,3,4]
The budget may be lowered in case the number of IO queues is less
than the budget (4) to make sure there are no duplicate queues on
the same check.
For example, on 3 IO queues:
Bug: [0,1,2,0], [1,2,0,1]
Fix: [0,1,2], [0,1,2]
Fixes: 1738cd3ed3 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Amit Bernstein <amitbern@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Small unsigned types are promoted to larger signed types in
the case of multiplication, the result of which may overflow.
In case the result of such a multiplication has its MSB
turned on, it will be sign extended with '1's.
This changes the multiplication result.
Code example of the phenomenon:
-------------------------------
u16 x, y;
size_t z1, z2;
x = y = 0xffff;
printk("x=%x y=%x\n",x,y);
z1 = x*y;
z2 = (size_t)x*y;
printk("z1=%lx z2=%lx\n", z1, z2);
Output:
-------
x=ffff y=ffff
z1=fffffffffffe0001 z2=fffe0001
The expected result of ffff*ffff is fffe0001, and without the
explicit casting to avoid the unwanted sign extension we got
fffffffffffe0001.
This commit adds an explicit casting to avoid the sign extension
issue.
Fixes: 689b2bdaaa ("net: ena: add functions for handling Low Latency Queues in ena_com")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
- L2CAP: Don't double set the HCI_CONN_MGMT_CONNECTED bit
- Fix memory leak in hci_req_sync_complete
- hci_sync: Fix using the same interval and window for Coded PHY
- Fix not validating setsockopt user input
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Merge tag 'for-net-2024-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Luiz Augusto von Dentz says:
====================
bluetooth pull request for net:
- L2CAP: Don't double set the HCI_CONN_MGMT_CONNECTED bit
- Fix memory leak in hci_req_sync_complete
- hci_sync: Fix using the same interval and window for Coded PHY
- Fix not validating setsockopt user input
* tag 'for-net-2024-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
Bluetooth: l2cap: Don't double set the HCI_CONN_MGMT_CONNECTED bit
Bluetooth: hci_sock: Fix not validating setsockopt user input
Bluetooth: ISO: Fix not validating setsockopt user input
Bluetooth: L2CAP: Fix not validating setsockopt user input
Bluetooth: RFCOMM: Fix not validating setsockopt user input
Bluetooth: SCO: Fix not validating setsockopt user input
Bluetooth: Fix memory leak in hci_req_sync_complete()
Bluetooth: hci_sync: Fix using the same interval and window for Coded PHY
Bluetooth: ISO: Don't reject BT_ISO_QOS if parameters are unset
====================
Link: https://lore.kernel.org/r/20240410191610.4156653-1-luiz.dentz@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Garbage collector does not take into account the risk of embryo getting
enqueued during the garbage collection. If such embryo has a peer that
carries SCM_RIGHTS, two consecutive passes of scan_children() may see a
different set of children. Leading to an incorrectly elevated inflight
count, and then a dangling pointer within the gc_inflight_list.
sockets are AF_UNIX/SOCK_STREAM
S is an unconnected socket
L is a listening in-flight socket bound to addr, not in fdtable
V's fd will be passed via sendmsg(), gets inflight count bumped
connect(S, addr) sendmsg(S, [V]); close(V) __unix_gc()
---------------- ------------------------- -----------
NS = unix_create1()
skb1 = sock_wmalloc(NS)
L = unix_find_other(addr)
unix_state_lock(L)
unix_peer(S) = NS
// V count=1 inflight=0
NS = unix_peer(S)
skb2 = sock_alloc()
skb_queue_tail(NS, skb2[V])
// V became in-flight
// V count=2 inflight=1
close(V)
// V count=1 inflight=1
// GC candidate condition met
for u in gc_inflight_list:
if (total_refs == inflight_refs)
add u to gc_candidates
// gc_candidates={L, V}
for u in gc_candidates:
scan_children(u, dec_inflight)
// embryo (skb1) was not
// reachable from L yet, so V's
// inflight remains unchanged
__skb_queue_tail(L, skb1)
unix_state_unlock(L)
for u in gc_candidates:
if (u.inflight)
scan_children(u, inc_inflight_move_tail)
// V count=1 inflight=2 (!)
If there is a GC-candidate listening socket, lock/unlock its state. This
makes GC wait until the end of any ongoing connect() to that socket. After
flipping the lock, a possibly SCM-laden embryo is already enqueued. And if
there is another embryo coming, it can not possibly carry SCM_RIGHTS. At
this point, unix_inflight() can not happen because unix_gc_lock is already
taken. Inflight graph remains unaffected.
Fixes: 1fd05ba5a2 ("[AF_UNIX]: Rewrite garbage collector, fixes race.")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240409201047.1032217-1-mhal@rbox.co
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In Clause 5 of IEEE Std 802-2014, two sublayers of the data link layer
(DLL) of the Open Systems Interconnection basic reference model (OSI/RM)
are described; the medium access control (MAC) and logical link control
(LLC) sublayers. The MAC sublayer is the one facing the physical layer.
In 8.2 of IEEE Std 802.1Q-2022, the Bridge architecture is described. A
Bridge component comprises a MAC Relay Entity for interconnecting the Ports
of the Bridge, at least two Ports, and higher layer entities with at least
a Spanning Tree Protocol Entity included.
Each Bridge Port also functions as an end station and shall provide the MAC
Service to an LLC Entity. Each instance of the MAC Service is provided to a
distinct LLC Entity that supports protocol identification, multiplexing,
and demultiplexing, for protocol data unit (PDU) transmission and reception
by one or more higher layer entities.
It is described in 8.13.9 of IEEE Std 802.1Q-2022 that in a Bridge, the LLC
Entity associated with each Bridge Port is modeled as being directly
connected to the attached Local Area Network (LAN).
On the switch with CPU port architecture, CPU port functions as Management
Port, and the Management Port functionality is provided by software which
functions as an end station. Software is connected to an IEEE 802 LAN that
is wholly contained within the system that incorporates the Bridge.
Software provides access to the LLC Entity associated with each Bridge Port
by the value of the source port field on the special tag on the frame
received by software.
We call frames that carry control information to determine the active
topology and current extent of each Virtual Local Area Network (VLAN),
i.e., spanning tree or Shortest Path Bridging (SPB) and Multiple VLAN
Registration Protocol Data Units (MVRPDUs), and frames from other link
constrained protocols, such as Extensible Authentication Protocol over LAN
(EAPOL) and Link Layer Discovery Protocol (LLDP), link-local frames. They
are not forwarded by a Bridge. Permanently configured entries in the
filtering database (FDB) ensure that such frames are discarded by the
Forwarding Process. In 8.6.3 of IEEE Std 802.1Q-2022, this is described in
detail:
Each of the reserved MAC addresses specified in Table 8-1
(01-80-C2-00-00-[00,01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F]) shall be
permanently configured in the FDB in C-VLAN components and ERs.
Each of the reserved MAC addresses specified in Table 8-2
(01-80-C2-00-00-[01,02,03,04,05,06,07,08,09,0A,0E]) shall be permanently
configured in the FDB in S-VLAN components.
Each of the reserved MAC addresses specified in Table 8-3
(01-80-C2-00-00-[01,02,04,0E]) shall be permanently configured in the FDB
in TPMR components.
The FDB entries for reserved MAC addresses shall specify filtering for all
Bridge Ports and all VIDs. Management shall not provide the capability to
modify or remove entries for reserved MAC addresses.
The addresses in Table 8-1, Table 8-2, and Table 8-3 determine the scope of
propagation of PDUs within a Bridged Network, as follows:
The Nearest Bridge group address (01-80-C2-00-00-0E) is an address that
no conformant Two-Port MAC Relay (TPMR) component, Service VLAN (S-VLAN)
component, Customer VLAN (C-VLAN) component, or MAC Bridge can forward.
PDUs transmitted using this destination address, or any other addresses
that appear in Table 8-1, Table 8-2, and Table 8-3
(01-80-C2-00-00-[00,01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F]), can
therefore travel no further than those stations that can be reached via a
single individual LAN from the originating station.
The Nearest non-TPMR Bridge group address (01-80-C2-00-00-03), is an
address that no conformant S-VLAN component, C-VLAN component, or MAC
Bridge can forward; however, this address is relayed by a TPMR component.
PDUs using this destination address, or any of the other addresses that
appear in both Table 8-1 and Table 8-2 but not in Table 8-3
(01-80-C2-00-00-[00,03,05,06,07,08,09,0A,0B,0C,0D,0F]), will be relayed
by any TPMRs but will propagate no further than the nearest S-VLAN
component, C-VLAN component, or MAC Bridge.
The Nearest Customer Bridge group address (01-80-C2-00-00-00) is an
address that no conformant C-VLAN component, MAC Bridge can forward;
however, it is relayed by TPMR components and S-VLAN components. PDUs
using this destination address, or any of the other addresses that appear
in Table 8-1 but not in either Table 8-2 or Table 8-3
(01-80-C2-00-00-[00,0B,0C,0D,0F]), will be relayed by TPMR components and
S-VLAN components but will propagate no further than the nearest C-VLAN
component or MAC Bridge.
Because the LLC Entity associated with each Bridge Port is provided via CPU
port, we must not filter these frames but forward them to CPU port.
In a Bridge, the transmission Port is majorly decided by ingress and egress
rules, FDB, and spanning tree Port State functions of the Forwarding
Process. For link-local frames, only CPU port should be designated as
destination port in the FDB, and the other functions of the Forwarding
Process must not interfere with the decision of the transmission Port. We
call this process trapping frames to CPU port.
Therefore, on the switch with CPU port architecture, link-local frames must
be trapped to CPU port, and certain link-local frames received by a Port of
a Bridge comprising a TPMR component or an S-VLAN component must be
excluded from it.
A Bridge of the switch with CPU port architecture cannot comprise a
Two-Port MAC Relay (TPMR) component as a TPMR component supports only a
subset of the functionality of a MAC Bridge. A Bridge comprising two Ports
(Management Port doesn't count) of this architecture will either function
as a standard MAC Bridge or a standard VLAN Bridge.
Therefore, a Bridge of this architecture can only comprise S-VLAN
components, C-VLAN components, or MAC Bridge components. Since there's no
TPMR component, we don't need to relay PDUs using the destination addresses
specified on the Nearest non-TPMR section, and the proportion of the
Nearest Customer Bridge section where they must be relayed by TPMR
components.
One option to trap link-local frames to CPU port is to add static FDB
entries with CPU port designated as destination port. However, because that
Independent VLAN Learning (IVL) is being used on every VID, each entry only
applies to a single VLAN Identifier (VID). For a Bridge comprising a MAC
Bridge component or a C-VLAN component, there would have to be 16 times
4096 entries. This switch intellectual property can only hold a maximum of
2048 entries. Using this option, there also isn't a mechanism to prevent
link-local frames from being discarded when the spanning tree Port State of
the reception Port is discarding.
The remaining option is to utilise the BPC, RGAC1, RGAC2, RGAC3, and RGAC4
registers. Whilst this applies to every VID, it doesn't contain all of the
reserved MAC addresses without affecting the remaining Standard Group MAC
Addresses. The REV_UN frame tag utilised using the RGAC4 register covers
the remaining 01-80-C2-00-00-[04,05,06,07,08,09,0A,0B,0C,0D,0F] destination
addresses. It also includes the 01-80-C2-00-00-22 to 01-80-C2-00-00-FF
destination addresses which may be relayed by MAC Bridges or VLAN Bridges.
The latter option provides better but not complete conformance.
This switch intellectual property also does not provide a mechanism to trap
link-local frames with specific destination addresses to CPU port by
Bridge, to conform to the filtering rules for the distinct Bridge
components.
Therefore, regardless of the type of the Bridge component, link-local
frames with these destination addresses will be trapped to CPU port:
01-80-C2-00-00-[00,01,02,03,0E]
In a Bridge comprising a MAC Bridge component or a C-VLAN component:
Link-local frames with these destination addresses won't be trapped to
CPU port which won't conform to IEEE Std 802.1Q-2022:
01-80-C2-00-00-[04,05,06,07,08,09,0A,0B,0C,0D,0F]
In a Bridge comprising an S-VLAN component:
Link-local frames with these destination addresses will be trapped to CPU
port which won't conform to IEEE Std 802.1Q-2022:
01-80-C2-00-00-00
Link-local frames with these destination addresses won't be trapped to
CPU port which won't conform to IEEE Std 802.1Q-2022:
01-80-C2-00-00-[04,05,06,07,08,09,0A]
Currently on this switch intellectual property, if the spanning tree Port
State of the reception Port is discarding, link-local frames will be
discarded.
To trap link-local frames regardless of the spanning tree Port State, make
the switch regard them as Bridge Protocol Data Units (BPDUs). This switch
intellectual property only lets the frames regarded as BPDUs bypass the
spanning tree Port State function of the Forwarding Process.
With this change, the only remaining interference is the ingress rules.
When the reception Port has no PVID assigned on software, VLAN-untagged
frames won't be allowed in. There doesn't seem to be a mechanism on the
switch intellectual property to have link-local frames bypass this function
of the Forwarding Process.
Fixes: b8f126a8d5 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20240409-b4-for-net-mt7530-fix-link-local-when-stp-discarding-v2-1-07b1150164ac@arinc9.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The wrong port config is being used if the PCS is reconfigured. Fix this
by correctly using the new config instead of the old one.
Fixes: 946e7fd505 ("net: sparx5: add port module support")
Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409-link-mode-reconfiguration-fix-v2-1-db6a507f3627@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
A couple of debug functions use a 512 byte temporary buffer and call another
function that has another buffer of the same size, which in turn exceeds the
usual warning limit for excessive stack usage:
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.c:1073:1: error: stack frame size (1448) exceeds limit (1024) in 'dr_dump_start' [-Werror,-Wframe-larger-than]
dr_dump_start(struct seq_file *file, loff_t *pos)
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.c:1009:1: error: stack frame size (1120) exceeds limit (1024) in 'dr_dump_domain' [-Werror,-Wframe-larger-than]
dr_dump_domain(struct seq_file *file, struct mlx5dr_domain *dmn)
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.c:705:1: error: stack frame size (1104) exceeds limit (1024) in 'dr_dump_matcher_rx_tx' [-Werror,-Wframe-larger-than]
dr_dump_matcher_rx_tx(struct seq_file *file, bool is_rx,
Rework these so that each of the various code paths only ever has one of
these buffers in it, and exactly the functions that declare one have
the 'noinline_for_stack' annotation that prevents them from all being
inlined into the same caller.
Fixes: 917d1e799d ("net/mlx5: DR, Change SWS usage to debug fs seq_file interface")
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/all/20240219100506.648089-1-arnd@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240408074142.3007036-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Michael Chan says:
====================
bnxt_en: Updates for net-next
The first patch prevents a driver crash when RSS contexts are
configred in ifdown state. Patches 2 to 6 are improvements for
managing MSIX for the aux device (for RoCE). The existing
scheme statically carves out the MSIX vectors for RoCE even if
the RoCE driver is not loaded. The new scheme adds flexibility
and allows the L2 driver to use the RoCE MSIX vectors if needed
when they are unused by the RoCE driver. The last patch updates
the MODULE_DESCRIPTION().
====================
Link: https://lore.kernel.org/r/20240409215431.41424-1-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update MODULE_DESCRIPTION to the more generic adapter family name.
The old name only includes the first generation of supported
adapters.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-8-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If the RoCE driver is not registered for a RoCE capable device, add
flexibility to use the RoCE resources (MSIX/NQs) for L2 purposes,
such as additional rings configured by the user or for XDP.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-7-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The existing scheme sets aside a number of MSIX/NQs for the RoCE
driver whether the RoCE driver is registered or not. This scheme
is not flexible and limits the resources available for the L2 rings
if RoCE is never used.
Modify the scheme so that the RoCE MSIX/NQs can be used by the L2
driver if they are not used for RoCE. The MSIX/NQs are now
represented by 3 fields. bp->ulp_num_msix_want contains the
desired default value, edev->ulp_num_msix_vec contains the
available value (but not necessarily in use), and
ulp_tbl->msix_requested contains the actual value in use by RoCE.
The L2 driver can dip into edev->ulp_num_msix_vec if necessary.
We need to add rtnl_lock() back in bnxt_register_dev() and
bnxt_unregister_dev() to synchronize the MSIX usage between L2 and
RoCE.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-6-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In its current form, bnxt_rdma_aux_device_init() not only initializes
the necessary data structures of the newly created aux device but also
adds the aux device into the aux bus subsytem. Refactor the logic into
separate functions, first function to initialize the aux device along
with the required resources and second, to actually add the device to
the aux bus subsytem.
This separation helps to create bnxt_en_dev much earlier and save its
resources separately.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-5-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ever since commit:
3034322113 ("bnxt_en: Remove runtime interrupt vector allocation")
The MSIX base vector is effectively always 0. Remove all unneeded
structure fields and code referencing the MSIX base.
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The memory for "edev->ulp_tbl" is allocated inside the
bnxt_rdma_aux_device_init() function. If it fails, the driver
will not create the auxiliary device for RoCE. Hence the NULL
check inside bnxt_register_dev() is unnecessary.
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The current implementation requires the ifstate to be up when
configuring the RSS contexts. It will try to fetch the RX ring
IDs and will crash if it is in ifdown state. Return error if
!netif_running() to prevent the crash.
An improved implementation is in the works to allow RSS contexts
to be changed while in ifdown state.
Fixes: b3d0083caf ("bnxt_en: Support RSS contexts in ethtool .{get|set}_rxfh()")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240409215431.41424-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Adaptations need to be made for the auxiliary device management in the
core driver level. Block this combination for now.
Fixes: 678eb44805 ("net/mlx5: SD, Implement basic query and instantiation")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-12-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When supporting more than 128 channels, the RQT size is
calculated by multiplying the number of channels by 2
and rounding up to the nearest power of 2.
The index of the RQT is derived from the RSS hash
calculations. If XOR8 is used as the RSS hash function,
there are only 256 possible hash results, and therefore,
only 256 indexes can be reached in the RQT.
Block setting the RSS hash function to XOR when the number
of channels exceeds 128.
Fixes: 74a8dadac1 ("net/mlx5e: Preparations for supporting larger number of channels")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-11-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Free Tx port timestamping metadata entries in the NAPI poll context and
consume metadata enties in the WQE xmit path. Do not free a Tx port
timestamping metadata entry in the WQE xmit path even in the error path to
avoid a race between two metadata entry producers.
Fixes: 3178308ad4 ("net/mlx5e: Make tx_port_ts logic resilient to out-of-order CQEs")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-10-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When creating a new HTB class while the interface is down,
the variable that follows the number of QoS SQs (htb_max_qos_sqs)
may not be consistent with the number of HTB classes.
Previously, we compared these two values to ensure that
the node_qid is lower than the number of QoS SQs, and we
allocated stats for that SQ when they are equal.
Change the check to compare the node_qid with the current
number of leaf nodes and fix the checking conditions to
ensure allocation of stats_list and stats for each node.
Fixes: 214baf2287 ("net/mlx5e: Support HTB offload")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-9-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Changing the channels number after configuring the receive flow hash
indirection table may affect the RSS table size. The previous
configuration may no longer be compatible with the new receive flow
hash indirection table.
Block changing the channels number when RXFH is configured and changing
the channels number requires resizing the RSS table size.
Fixes: 74a8dadac1 ("net/mlx5e: Preparations for supporting larger number of channels")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-7-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
struct mlx5_pkt_reformat contains a naked union of a u32 id and a
dr_action pointer which is used when the action is SW-managed (when
pkt_reformat.owner is set to MLX5_FLOW_RESOURCE_OWNER_SW). Using id
directly in that case is incorrect, as it maps to the least significant
32 bits of the 64-bit pointer in mlx5_fs_dr_action and not to the pkt
reformat id allocated in firmware.
For the purpose of comparing whether two rules are identical,
interpreting the least significant 32 bits of the mlx5_fs_dr_action
pointer as an id mostly works... until it breaks horribly and produces
the outcome described in [1].
This patch fixes mlx5_flow_dests_cmp to correctly compare ids using
mlx5_fs_dr_action_get_pkt_reformat_id for the SW-managed rules.
Link: https://lore.kernel.org/netdev/ea5264d6-6b55-4449-a602-214c6f509c1e@163.com/T/#u [1]
Fixes: 6a48faeeca ("net/mlx5: Add direct rule fs_cmd implementation")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Previously, add_rule_fg would only add newly created rules from the
handle into the tree when they had a refcount of 1. On the other hand,
create_flow_handle tries hard to find and reference already existing
identical rules instead of creating new ones.
These two behaviors can result in a situation where create_flow_handle
1) creates a new rule and references it, then
2) in a subsequent step during the same handle creation references it
again,
resulting in a rule with a refcount of 2 that is not linked into the
tree, will have a NULL parent and root and will result in a crash when
the flow group is deleted because del_sw_hw_rule, invoked on rule
deletion, assumes node->parent is != NULL.
This happened in the wild, due to another bug related to incorrect
handling of duplicate pkt_reformat ids, which lead to the code in
create_flow_handle incorrectly referencing a just-added rule in the same
flow handle, resulting in the problem described above. Full details are
at [1].
This patch changes add_rule_fg to add new rules without parents into
the tree, properly initializing them and avoiding the crash. This makes
it more consistent with how rules are added to an FTE in
create_flow_handle.
Fixes: 74491de937 ("net/mlx5: Add multi dest support")
Link: https://lore.kernel.org/netdev/ea5264d6-6b55-4449-a602-214c6f509c1e@163.com/T/#u [1]
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-5-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The mlx5 comp irq name scheme is changed a little bit between
commit 3663ad34bc ("net/mlx5: Shift control IRQ to the last index")
and commit 3354822cde ("net/mlx5: Use dynamic msix vectors allocation").
The index in the comp irq name used to start from 0 but now it starts
from 1. There is nothing critical here, but it's harmless to change
back to the old behavior, a.k.a starting from 0.
Fixes: 3354822cde ("net/mlx5: Use dynamic msix vectors allocation")
Reviewed-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Reviewed-by: Yuanyuan Zhong <yzhong@purestorage.com>
Signed-off-by: Michael Liang <mliang@purestorage.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case device is having a non fatal FW error during probe, the
driver will report the error to user via devlink. This will trigger
a WARN_ON, since mlx5 is calling devlink_register() last.
In order to avoid the WARN_ON[1], change mlx5 to invoke devl_register()
first under devlink lock.
[1]
WARNING: CPU: 5 PID: 227 at net/devlink/health.c:483 devlink_recover_notify.constprop.0+0xb8/0xc0
CPU: 5 PID: 227 Comm: kworker/u16:3 Not tainted 6.4.0-rc5_for_upstream_min_debug_2023_06_12_12_38 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Workqueue: mlx5_health0000:08:00.0 mlx5_fw_reporter_err_work [mlx5_core]
RIP: 0010:devlink_recover_notify.constprop.0+0xb8/0xc0
Call Trace:
<TASK>
? __warn+0x79/0x120
? devlink_recover_notify.constprop.0+0xb8/0xc0
? report_bug+0x17c/0x190
? handle_bug+0x3c/0x60
? exc_invalid_op+0x14/0x70
? asm_exc_invalid_op+0x16/0x20
? devlink_recover_notify.constprop.0+0xb8/0xc0
devlink_health_report+0x4a/0x1c0
mlx5_fw_reporter_err_work+0xa4/0xd0 [mlx5_core]
process_one_work+0x1bb/0x3c0
? process_one_work+0x3c0/0x3c0
worker_thread+0x4d/0x3c0
? process_one_work+0x3c0/0x3c0
kthread+0xc6/0xf0
? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x1f/0x30
</TASK>
Fixes: cf53021740 ("devlink: Notify users when objects are accessible")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Next patch will move devlink register to be first. Therefore, whenever
mlx5 will register a param, the user will be notified.
In order to notify the user, devlink is using the get() callback of
the param. Hence, resources that are being used by the get() callback
must be set before the devlink param is registered.
Therefore, store eswitch pointer inside mdev before registering the
param.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240409190820.227554-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- kprobes: Fix possible use-after-free issue on kprobe registration. Since
check_kprobe_address_safe() uses `is_module_text_address()` and
`__module_text_address()` separately, if the probe address is on an
unloading module, the first `is_module_text_address()` return true but
the second `__module_text_address()` returns NULL (module is unloaded
between them). Thus it expects the probe is on the kernel text, and
skips to get the module reference. In this case, when it arms a breakpoint
on the probe address, it may cause a use-after-free problem.
To fix this issue, we only use `__module_text_address()` once and tries
to get reference of the module, if it fails, reject the probe.
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Merge tag 'probes-fixes-v6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
"Fix possible use-after-free issue on kprobe registration.
check_kprobe_address_safe() uses `is_module_text_address()` and
`__module_text_address()` separately.
As a result, if the probed address is in a module that is being
unloaded, the first `is_module_text_address()` might return true but
then the `__module_text_address()` call might return NULL if the
module has been unloaded between the two.
The result is that kprobe believes the probe is on the kernel text,
and skips getting a module reference. In this case, when it arms a
breakpoint on the probe address, it may cause a use-after-free.
To fix this issue, only use `__module_text_address()` once and get a
reference to the module then. If it fails, reject the probe"
* tag 'probes-fixes-v6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobes: Fix possible use-after-free issue on kprobe registration
The Spectrum-4 ASIC supports 100Gb/s per lane link modes, but the only
one currently supported by the driver is 800Gb/s over eight lanes.
Add support for 100Gb/s over one lane, 200Gb/s over two lanes and
400Gb/s over four lanes.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/1d77830f6abcc4f0d57a7f845e5a6d97a75a434b.1712667750.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In my recent commit, I missed that do_replace() handlers
use copy_from_sockptr() (which I fixed), followed
by unsafe copy_from_sockptr_offset() calls.
In all functions, we can perform the @optlen validation
before even calling xt_alloc_table_info() with the following
check:
if ((u64)optlen < (u64)tmp.size + sizeof(tmp))
return -EINVAL;
Fixes: 0c83842df4 ("netfilter: validate user input for expected length")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Link: https://lore.kernel.org/r/20240409120741.3538135-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- fs/proc: Fix to not show original kernel cmdline more than twice on
/proc/bootconfig.
- fs/proc: Fix to show the original cmdline only if the bootconfig
modifies it.
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Merge tag 'bootconfig-fixes-v6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull bootconfig fixes from Masami Hiramatsu:
- show the original cmdline only once, and only if it was modeified by
bootconfig
* tag 'bootconfig-fixes-v6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
fs/proc: Skip bootloader comment if no embedded kernel parameters
fs/proc: remove redundant comments from /proc/bootconfig
After commit 40867d74c3 ("net: Add l3mdev index to flow struct and
avoid oif reset for port devices") it is possible to configure FIB rules
that match on iif / oif being a l3mdev port. It was not possible before
as these parameters were reset to the ifindex of the l3mdev device
itself prior to the FIB rules lookup.
Add tests that cover this functionality as it does not seem to be
covered by existing ones and I am aware of at least one user that needs
this functionality in addition to the one mentioned in [1].
Reuse the existing FIB rules tests by simply configuring a VRF prior to
the test and removing it afterwards. Differentiate the output of the
non-VRF tests from the VRF tests by appending "(VRF)" to the test name
if a l3mdev FIB rule is present.
Verified that these tests do fail on kernel 5.15.y which does not
include the previously mentioned commit:
# ./fib_rule_tests.sh -t fib_rule6_vrf
[...]
TEST: rule6 check: oif redirect to table (VRF) [FAIL]
[...]
TEST: rule6 check: iif redirect to table (VRF) [FAIL]
# ./fib_rule_tests.sh -t fib_rule4_vrf
[...]
TEST: rule4 check: oif redirect to table (VRF) [FAIL]
[...]
TEST: rule4 check: iif redirect to table (VRF) [FAIL]
[1] https://lore.kernel.org/netdev/20200922131122.GB1601@ICIPI.localdomain/
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20240409110816.2508498-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
