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Both <port> br_port_locked and <lag> interfaces's flag
offloading is supported. No new ABI is being added,
rather existing (port_param_set) API call gets extended.
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
V2:
add missing receipents (linux-kernel, netdev)
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2022-08-24
1) Fix a refcount leak in __xfrm_policy_check.
From Xin Xiong.
2) Revert "xfrm: update SA curlft.use_time". This
violates RFC 2367. From Antony Antony.
3) Fix a comment on XFRMA_LASTUSED.
From Antony Antony.
4) x->lastused is not cloned in xfrm_do_migrate.
Fix from Antony Antony.
5) Serialize the calls to xfrm_probe_algs.
From Herbert Xu.
6) Fix a null pointer dereference of dst->dev on a metadata
dst in xfrm_lookup_with_ifid. From Nikolay Aleksandrov.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since the user can control the arguments provided to the kernel by the
ioctl() system call, an out-of-bounds bug occurs when the 'id->name'
provided by the user does not end with '\0'.
The following log can reveal it:
[ 10.002313] BUG: KASAN: stack-out-of-bounds in snd_ctl_find_id+0x36c/0x3a0
[ 10.002895] Read of size 1 at addr ffff888109f5fe28 by task snd/439
[ 10.004934] Call Trace:
[ 10.007140] snd_ctl_find_id+0x36c/0x3a0
[ 10.007489] snd_ctl_ioctl+0x6cf/0x10e0
Fix this by checking the bound of 'id->name' in the loop.
Fixes: c27e1efb61c5 ("ALSA: control: Use xarray for faster lookups")
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Link: https://lore.kernel.org/r/20220824081654.3767739-1-zheyuma97@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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On link state change, the controller gets reset,
causing PPS to drop out and the PHC to lose its
time and calibration. So we restart it if needed,
restoring calibration and time registers.
Changes since v2:
* Add `fec_ptp_save_state()`/`fec_ptp_restore_state()`
* Use `ktime_get_real_ns()`
* Use `BIT()` macro
Changes since v1:
* More ECR #define's
* Stop PPS in `fec_ptp_stop()`
Signed-off-by: Csókás Bence <csokas.bence@prolan.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Siddharth Vadapalli says:
====================
J7200: CPSW5G: Add support for QSGMII mode to am65-cpsw driver
Add support for QSGMII mode to am65-cpsw driver.
Change log:
v4-> v5:
1. Move ti,j7200-cpswxg-nuss compatible to the line above the
ti,j721e-cpsw-nuss compatible.
2. Add allOf and move if-then statements within it to allow future if-then
statements to be added easily.
v3 -> v4:
1. Update bindings to disallow ports based on compatible, instead of
adding a new if/then statement for the new compatible.
2. Add Else-If condition for RMII mode in the set of supported interfaces.
Support for RMII mode is already present in the driver and I had
missed out adding a condition for RMII mode in the previous patches.
v2 -> v3:
1. In ti,k3-am654-cpsw-nuss.yaml, restrict if/then statement to port
nodes.
v1 -> v2:
1. Add new compatible for CPSW5G in ti,k3-am654-cpsw-nuss.yaml and extend
properties for new compatible.
2. Add extra_modes member to struct am65_cpsw_pdata to be used for QSGMII
mode by new compatible.
3. Add check for phylink supported modes to ensure that only one phy mode
is advertised as supported.
4. Check if extra_modes supports QSGMII mode in am65_cpsw_nuss_mac_config()
for register write.
5. Add check for assigning port->sgmii_base only when extra_modes is valid.
v4: https://lore.kernel.org/r/20220816060139.111934-1-s-vadapalli@ti.com/
v3: https://lore.kernel.org/r/20220606110443.30362-1-s-vadapalli@ti.com/
v2: https://lore.kernel.org/r/20220602114558.6204-1-s-vadapalli@ti.com/
v1: https://lore.kernel.org/r/20220531113058.23708-1-s-vadapalli@ti.com/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In TI's J7200 SoC CPSW5G ports, each of the 4 ports can be configured
as a QSGMII main or QSGMII-SUB port. This configuration is performed
by phy-gmii-sel driver on invoking the phy_set_mode_ext() function.
It is necessary for the QSGMII main port to be configured before any of
the QSGMII-SUB interfaces are brought up. Currently, the QSGMII-SUB
interfaces come up before the QSGMII main port is configured.
Fix this by moving the call to phy_set_mode_ext() from
am65_cpsw_nuss_ndo_slave_open() to am65_cpsw_nuss_init_slave_ports(),
thereby ensuring that the QSGMII main port is configured before any of
the QSGMII-SUB ports are brought up.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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CPSW5G in J7200 supports additional modes like QSGMII and SGMII.
Add new compatible for J7200 and enable QSGMII mode in am65-cpsw driver.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update bindings for TI K3 J7200 SoC which contains 5 ports (4 external
ports) CPSW5G module and add compatible for it.
Changes made:
- Add new compatible ti,j7200-cpswxg-nuss for CPSW5G.
- Extend pattern properties for new compatible.
- Change maximum number of CPSW ports to 4 for new compatible.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So add all skb to
a tmp list, then free them after spin_unlock_irqrestore() at
once.
Fixes: 66ba215cb513 ("neigh: fix possible DoS due to net iface start/stop loop")
Suggested-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sometimes, gcc will optimize the function by spliting it to two or
more functions. In this case, kfree_skb_reason() is splited to
kfree_skb_reason and kfree_skb_reason.part.0. However, the
function/tracepoint trace_kfree_skb() in it needs the return address
of kfree_skb_reason().
This split makes the call chains becomes:
kfree_skb_reason() -> kfree_skb_reason.part.0 -> trace_kfree_skb()
which makes the return address that passed to trace_kfree_skb() be
kfree_skb().
Therefore, introduce '__fix_address', which is the combination of
'__noclone' and 'noinline', and apply it to kfree_skb_reason() to
prevent to from being splited or made inline.
(Is it better to simply apply '__noclone oninline' to kfree_skb_reason?
I'm thinking maybe other functions have the same problems)
Meanwhile, wrap 'skb_unref()' with 'unlikely()', as the compiler thinks
it is likely return true and splits kfree_skb_reason().
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When running identity-mapped and depending on the kernel configuration,
it is possible that the compiler uses jump tables when generating code
for cc_platform_has().
This causes a boot failure because the jump table uses un-mapped kernel
virtual addresses, not identity-mapped addresses. This has been seen
with CONFIG_RETPOLINE=n.
Similar to sme_encrypt_kernel(), use an open-coded direct check for the
status of SNP rather than trying to eliminate the jump table. This
preserves any code optimization in cc_platform_has() that can be useful
post boot. It also limits the changes to SEV-specific files so that
future compiler features won't necessarily require possible build changes
just because they are not compatible with running identity-mapped.
[ bp: Massage commit message. ]
Fixes: 5e5ccff60a29 ("x86/sev: Add helper for validating pages in early enc attribute changes")
Reported-by: Sean Christopherson <seanjc@google.com>
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> # 5.19.x
Link: https://lore.kernel.org/all/YqfabnTRxFSM+LoX@google.com/
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In some cases, bootloaders will leave boot_params->cc_blob_address
uninitialized rather than zeroing it out. This field is only meant to be
set by the boot/compressed kernel in order to pass information to the
uncompressed kernel when SEV-SNP support is enabled.
Therefore, there are no cases where the bootloader-provided values
should be treated as anything other than garbage. Otherwise, the
uncompressed kernel may attempt to access this bogus address, leading to
a crash during early boot.
Normally, sanitize_boot_params() would be used to clear out such fields
but that happens too late: sev_enable() may have already initialized
it to a valid value that should not be zeroed out. Instead, have
sev_enable() zero it out unconditionally beforehand.
Also ensure this happens for !CONFIG_AMD_MEM_ENCRYPT as well by also
including this handling in the sev_enable() stub function.
[ bp: Massage commit message and comments. ]
Fixes: b190a043c49a ("x86/sev: Add SEV-SNP feature detection/setup")
Reported-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Reported-by: watnuss@gmx.de
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216387
Link: https://lore.kernel.org/r/20220823160734.89036-1-michael.roth@amd.com
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Currently, net.netfilter.nf_conntrack_frag6_high_thresh can only be lowered.
I found this issue while investigating a probable kernel issue
causing flakes in tools/testing/selftests/net/ip_defrag.sh
In particular, these sysctl changes were ignored:
ip netns exec "${NETNS}" sysctl -w net.netfilter.nf_conntrack_frag6_high_thresh=9000000 >/dev/null 2>&1
ip netns exec "${NETNS}" sysctl -w net.netfilter.nf_conntrack_frag6_low_thresh=7000000 >/dev/null 2>&1
This change is inline with commit 836196239298 ("net/ipfrag: let ip[6]frag_high_thresh
in ns be higher than in init_net")
Fixes: 8db3d41569bb ("netfilter: nf_defrag_ipv6: use net_generic infra")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The struct nhlt_format's fmt_config is a flexible array, it must not be
used as normal array.
When moving to the next nhlt_fmt_cfg we need to take into account the data
behind the ->config.caps (indicated by ->config.size).
Fixes: a864e8f159b13 ("ALSA: hda: intel-nhlt: verify config type")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Jaska Uimonen <jaska.uimonen@linux.intel.com>
Link: https://lore.kernel.org/r/20220823122405.18464-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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It's been reported that there is a possible data-race accessing to the
global card_requested[] array at ALSA sequencer core, which is used
for determining whether to call request_module() for the card or not.
This data race itself is almost harmless, as it might end up with one
extra request_module() call for the already loaded module at most.
But it's still better to fix.
This patch addresses the possible data race of card_requested[] and
client_requested[] arrays by replacing them with bitmask.
It's an atomic operation and can work without locks.
Reported-by: Abhishek Shah <abhishek.shah@columbia.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAEHB24_ay6YzARpA1zgCsE7=H9CSJJzux618E=Ka4h0YdKn=qA@mail.gmail.com
Link: https://lore.kernel.org/r/20220823072717.1706-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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To clear the flow table on flow table free, the following sequence
normally happens in order:
1) gc_step work is stopped to disable any further stats/del requests.
2) All flow table entries are set to teardown state.
3) Run gc_step which will queue HW del work for each flow table entry.
4) Waiting for the above del work to finish (flush).
5) Run gc_step again, deleting all entries from the flow table.
6) Flow table is freed.
But if a flow table entry already has pending HW stats or HW add work
step 3 will not queue HW del work (it will be skipped), step 4 will wait
for the pending add/stats to finish, and step 5 will queue HW del work
which might execute after freeing of the flow table.
To fix the above, this patch flushes the pending work, then it sets the
teardown flag to all flows in the flowtable and it forces a garbage
collector run to queue work to remove the flows from hardware, then it
flushes this new pending work and (finally) it forces another garbage
collector run to remove the entry from the software flowtable.
Stack trace:
[47773.882335] BUG: KASAN: use-after-free in down_read+0x99/0x460
[47773.883634] Write of size 8 at addr ffff888103b45aa8 by task kworker/u20:6/543704
[47773.885634] CPU: 3 PID: 543704 Comm: kworker/u20:6 Not tainted 5.12.0-rc7+ #2
[47773.886745] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)
[47773.888438] Workqueue: nf_ft_offload_del flow_offload_work_handler [nf_flow_table]
[47773.889727] Call Trace:
[47773.890214] dump_stack+0xbb/0x107
[47773.890818] print_address_description.constprop.0+0x18/0x140
[47773.892990] kasan_report.cold+0x7c/0xd8
[47773.894459] kasan_check_range+0x145/0x1a0
[47773.895174] down_read+0x99/0x460
[47773.899706] nf_flow_offload_tuple+0x24f/0x3c0 [nf_flow_table]
[47773.907137] flow_offload_work_handler+0x72d/0xbe0 [nf_flow_table]
[47773.913372] process_one_work+0x8ac/0x14e0
[47773.921325]
[47773.921325] Allocated by task 592159:
[47773.922031] kasan_save_stack+0x1b/0x40
[47773.922730] __kasan_kmalloc+0x7a/0x90
[47773.923411] tcf_ct_flow_table_get+0x3cb/0x1230 [act_ct]
[47773.924363] tcf_ct_init+0x71c/0x1156 [act_ct]
[47773.925207] tcf_action_init_1+0x45b/0x700
[47773.925987] tcf_action_init+0x453/0x6b0
[47773.926692] tcf_exts_validate+0x3d0/0x600
[47773.927419] fl_change+0x757/0x4a51 [cls_flower]
[47773.928227] tc_new_tfilter+0x89a/0x2070
[47773.936652]
[47773.936652] Freed by task 543704:
[47773.937303] kasan_save_stack+0x1b/0x40
[47773.938039] kasan_set_track+0x1c/0x30
[47773.938731] kasan_set_free_info+0x20/0x30
[47773.939467] __kasan_slab_free+0xe7/0x120
[47773.940194] slab_free_freelist_hook+0x86/0x190
[47773.941038] kfree+0xce/0x3a0
[47773.941644] tcf_ct_flow_table_cleanup_work
Original patch description and stack trace by Paul Blakey.
Fixes: c29f74e0df7a ("netfilter: nf_flow_table: hardware offload support")
Reported-by: Paul Blakey <paulb@nvidia.com>
Tested-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Expose nf_flow_table_gc_run() to force a garbage collector run from the
offload infrastructure.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Update nft_data_init() to report EINVAL if chain is already bound.
Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Reported-by: Gwangun Jung <exsociety@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Only allow to use this expression from NFPROTO_NETDEV family.
Fixes: af308b94a2a4 ("netfilter: nf_tables: add tunnel support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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As it was originally intended, restrict extension to supported families.
Fixes: b96af92d6eaf ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Error might occur later in the nf_tables_addchain() codepath, enable
static key only after transaction has been created.
Fixes: 9f08ea848117 ("netfilter: nf_tables: keep chain counters away from hot path")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Instead report ERANGE if csum_offset is too long, and EOPNOTSUPP if type
is not support.
Fixes: 7ec3f7b47b8d ("netfilter: nft_payload: add packet mangling support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Instead of offset and length are truncation to u8, report ERANGE.
Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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mutex is per-netns, move table_netns to the pernet area.
*read-write* to 0xffffffff883a01e8 of 8 bytes by task 6542 on cpu 0:
nf_tables_newtable+0x6dc/0xc00 net/netfilter/nf_tables_api.c:1221
nfnetlink_rcv_batch net/netfilter/nfnetlink.c:513 [inline]
nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:634 [inline]
nfnetlink_rcv+0xa6a/0x13a0 net/netfilter/nfnetlink.c:652
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x652/0x730 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x643/0x740 net/netlink/af_netlink.c:1921
Fixes: f102d66b335a ("netfilter: nf_tables: use dedicated mutex to guard transactions")
Reported-by: Abhishek Shah <abhishek.shah@columbia.edu>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Updates on existing implicit chain make no sense, disallow this.
Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- The psi data structure was changed to be allocated dynamically but
it wasn't being cleared leading to it reporting garbage values and
triggering spurious oom kills.
- A deadlock involving cpuset and cpu hotplug.
- When a controller is moved across cgroup hierarchies,
css->rstat_css_node didn't get RCU drained properly from the previous
list.
* tag 'cgroup-for-6.0-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Fix race condition at rebind_subsystems()
cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock
sched/psi: Remove redundant cgroup_psi() when !CONFIG_CGROUPS
sched/psi: Remove unused parameter nbytes of psi_trigger_create()
sched/psi: Zero the memory of struct psi_group
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit fix from Paul Moore:
"A single fix for a potential double-free on a fsnotify error path"
* tag 'audit-pr-20220823' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: fix potential double free on error path from fsnotify_add_inode_mark
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
Pull file_remove_privs() fix from Christian Brauner:
"As part of Stefan's and Jens' work to add async buffered write
support to xfs we refactored file_remove_privs() and added
__file_remove_privs() to avoid calling __remove_privs() when
IOCB_NOWAIT is passed.
While debugging a recent performance regression report I found that
during review we missed that commit faf99b563558 ("fs: add
__remove_file_privs() with flags parameter") accidently changed
behavior when dentry_needs_remove_privs() returns zero.
Before the commit it would still call inode_has_no_xattr() setting
the S_NOSEC bit and thereby avoiding even calling into
dentry_needs_remove_privs() the next time this function is called.
After that commit inode_has_no_xattr() would only be called if
__remove_privs() had to be called.
Restore the old behavior. This is likely the cause of the performance
regression"
* tag 'fs.fixes.v6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
fs: __file_remove_privs(): restore call to inode_has_no_xattr()
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5 fixes 2022-08-22
This series provides bug fixes to mlx5 driver.
* tag 'mlx5-fixes-2022-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5: Unlock on error in mlx5_sriov_enable()
net/mlx5e: Fix use after free in mlx5e_fs_init()
net/mlx5e: kTLS, Use _safe() iterator in mlx5e_tls_priv_tx_list_cleanup()
net/mlx5: unlock on error path in esw_vfs_changed_event_handler()
net/mlx5e: Fix wrong tc flag used when set hw-tc-offload off
net/mlx5e: TC, Add missing policer validation
net/mlx5e: Fix wrong application of the LRO state
net/mlx5: Avoid false positive lockdep warning by adding lock_class_key
net/mlx5: Fix cmd error logging for manage pages cmd
net/mlx5: Disable irq when locking lag_lock
net/mlx5: Eswitch, Fix forwarding decision to uplink
net/mlx5: LAG, fix logic over MLX5_LAG_FLAG_NDEVS_READY
net/mlx5e: Properly disable vlan strip on non-UL reps
====================
Link: https://lore.kernel.org/r/20220822195917.216025-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
ice: xsk: reduced queue count fixes
Maciej Fijalkowski says:
this small series is supposed to fix the issues around AF_XDP usage with
reduced queue count on interface. Due to the XDP rings setup, some
configurations can result in sockets not seeing traffic flowing. More
about this in description of patch 2.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
ice: xsk: use Rx ring's XDP ring when picking NAPI context
ice: xsk: prohibit usage of non-balanced queue id
====================
Link: https://lore.kernel.org/r/20220822163257.2382487-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Wei Fang says:
====================
add interface mode select and RMII
From: Wei Fang <wei.fang@nxp.com>
The patches add the below feature support for both TJA1100 and
TJA1101 PHYs cards:
- Add MII and RMII mode support.
- Add REF_CLK input/output support for RMII mode.
====================
Link: https://lore.kernel.org/r/20220822015949.1569969-1-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add below features support for both TJA1100 and TJA1101 cards:
- Add MII and RMII mode support.
- Add REF_CLK input/output support for RMII mode.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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TJA110x REF_CLK can be configured as interface reference clock
intput or output when the RMII mode enabled. This patch add the
property to make the REF_CLK can be configurable.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Petr Machata says:
====================
mlxsw: Introduce modular system support by minimal driver
Vadim Pasternak writes:
This patchset adds line cards support in mlxsw_minimal, which is used
for monitoring purposes on BMC systems. The BMC is connected to the
ASIC over I2C bus, unlike the host CPU that is connected to the ASIC
via PCI bus.
The BMC system needs to be notified whenever line cards become active
or inactive, so that, for example, netdevs will be registered /
unregistered by mlxsw_minimal. However, traps cannot be generated
towards the BMC over the I2C bus. To overcome that, the I2C bus driver
(i.e., mlxsw_i2c) registers an handler for an IRQ that is fired upon
specific system wide changes, like line card activation and
deactivation.
The generated event is handled by mlxsw_core, which checks whether
anything changed in the state of available line cards. If a line card
becomes active or inactive, interested parties such as mlxsw_minimal
are notified via their registered line card event callback.
Patch set overview:
Patches #1 is preparations.
Patches #2-#3 extend mlxsw_core with an infrastructure to handle the
previously mentioned system events.
Patch #4 extends the I2C bus driver to register an handler for the IRQ
fired upon specific system wide changes.
Patches #5-#8 gradually add line cards support in mlxsw_minimal by
dynamically registering / unregistering netdevs for ports found on
line cards, whenever a line card becomes active / inactive.
====================
Link: https://lore.kernel.org/r/cover.1661093502.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Implement line card operation callbacks got_active() / got_inactive().
The purpose of these callback to create / remove line card ports after
line card is getting active / inactive.
Implement line ports_remove_selected() callback to support line card
un-provisioning flow through 'devlink'.
Add line card operation registration and de-registration APIs.
Add module offset for line card. Offset for main board iz zero.
For line card in slot #n offset is calculated as (#n - 1) multiplied by
maximum modules number.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The interfaces for ports found on line card are created and removed
dynamically after line card is getting active or inactive.
Introduce per line card array with module to port mapping.
For each port get 'slot_index' through PMLP register and set port
mapping for the relevant [slot_index][module] entry.
Split module and port allocation into separate routines.
Split per line card port creation and removing into separate routines.
Motivation to re-use these routines for line card operations.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Perform ports allocation in a separate routine.
Motivation is to re-use this routine for ports found on line cards.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add 'slot_index' field to port structure.
Replace zero slot_index argument with 'slot_index' in 'ethtool'
related APIs.
Add 'slot_index' argument to port initialization and
de-initialization related APIs.
Motivation is to prepare minimal driver for modular system support.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Extend i2c bus driver with interrupt handler to support system specific
hotplug events, related to line card state change.
Provide system IRQ line for interrupt handler. IRQ line Id could be
provided through the platform data if available, or could be set to the
default value.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add line card system event handler. Register it with core. It is
triggered by system interrupts raised from chassis programmable logic
devices to CPU. The purpose is to handle line card state changes over
I2C bus.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The purpose of system event handler is to handle system interrupts.
Such interrupts are raised to CPU from system programmable logic
devices, upon specific system wide changes, like line card activation
and deactivation.
The purpose is to create an alternative to trap mechanism, which
delivers these events to driver over PCI bus, but not available for
the driver working over I2C bus.
Mechanism is system dependent and applicable only for the systems
equipped with programmable devices with custom logic.
Add APIs for event handler registration and un-registration and API
which should be invoked from the registered callbacks when system
interrupt is raised to CPU.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently, each line card is initialized using the following steps:
1. Initializing its various fields (e.g., slot index).
2. Creating the corresponding devlink object.
3. Enabling events (i.e., traps) for changes in line card status.
4. Querying and processing line card status.
Unlike traps, the IRQ that notifies the CPU about line card status
changes cannot be enabled / disabled on a per line card basis.
If a handler is registered before the line cards are initialized, the
handler risks accessing uninitialized memory.
On the other hand, if the handler is registered after initialization,
we risk missing events. For example, in step 4, the driver might see
that a line card is in ready state and will tell the device to enable
it. When enablement is done, the line card will be activated and the
IRQ will be triggered. Since a handler was not registered, the event
will be missed.
Solve this by splitting the initialization sequence into two steps
(1-2 and 3-4). In a subsequent patch, the handler will be registered
between both steps.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Provide a bit of a brain dump of netlink related information
as documentation. Hopefully this will be useful to people
trying to navigate implementing YAML based parsing in languages
we won't be able to help with.
I started writing this doc while trying to figure out what
it'd take to widen the applicability of YAML to good old rtnl,
but the doc grew beyond that as it usually happens.
In all honesty a lot of this information is new to me as I usually
follow the "copy an existing example, drink to forget" process
of writing netlink user space, so reviews will be much appreciated.
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20220819200221.422801-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Subsequent patch will render the kdoc from
include/uapi/linux/netlink.h into Documentation.
We need to fix the warnings. While at it move
the comments on struct nlmsghdr to a proper
kdoc comment.
Link: https://lore.kernel.org/r/20220819200221.422801-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Michael Chan says:
====================
bnxt_en: Bug fixes
This series includes 2 fixes for regressions introduced by the XDP
multi-buffer feature, 1 devlink reload bug fix, and 1 SRIOV resource
accounting bug fix.
====================
Link: https://lore.kernel.org/r/1661180814-19350-1-git-send-email-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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LRO/GRO_HW should be disabled if there is an attached XDP program.
BNXT_FLAG_TPA is the current setting of the LRO/GRO_HW. Using
BNXT_FLAG_TPA to disable LRO/GRO_HW will cause these features to be
permanently disabled once they are disabled.
Fixes: 1dc4c557bfed ("bnxt: adding bnxt_xdp_build_skb to build skb from multibuffer xdp_buff")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There are 2 issues:
1. We should decrement hw_resc->max_nqs instead of hw_resc->max_irqs
with the number of NQs assigned to the VFs. The IRQs are fixed
on each function and cannot be re-assigned. Only the NQs are being
assigned to the VFs.
2. vf_msix is the total number of NQs to be assigned to the VFs. So
we should decrement vf_msix from hw_resc->max_nqs.
Fixes: b16b68918674 ("bnxt_en: Add SR-IOV support for 57500 chips.")
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add missing devlink_set_features() API for callbacks reload_down
and reload_up to function.
Fixes: 228ea8c187d8 ("bnxt_en: implement devlink dev reload driver_reinit")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Using BNXT_PAGE_MODE_BUF_SIZE + offset as buffer length value is not
sufficient when running single buffer XDP programs doing redirect
operations. The stack will complain on missing skb tail room. Fix it
by using PAGE_SIZE when calling xdp_init_buff() for single buffer
programs.
Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff")
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>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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