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All modern chips support and need the 10_100 bit set for supporting jumbo
frames on 10/100 ports, so instead of enabling it only for 583XX enable
it for everything except bcm63xx, where the bit is writeable, but does
nothing.
Tested on BCM53115, where jumbo frames were dropped at 10/100 speeds
without the bit set.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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While BCM5325/5365 do not support jumbo frames, they do support slightly
oversized frames, so do not error out if requesting a supported MTU for
them.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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BCM5325/BCM5365 do not support jumbo frames, so we should not report a
jumbo frame mtu for them. But they do support so called "oversized"
frames up to 1536 bytes long by default, so report an appropriate MTU.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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JMS_MAX_SIZE is the ethernet frame length, not the MTU, which is payload
without ethernet headers.
According to the datasheets maximum supported frame length for most
gigabyte swithes is 9720 bytes, so convert that to the expected MTU when
using VLAN tagged frames.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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JMS_MIN_SIZE is the full ethernet frame length, while mtu is just the
data payload size. Comparing these two meant that mtus between 1500 and
1518 did not trigger enabling jumbo frames.
So instead compare the set mtu ETH_DATA_LEN, which is equal to
JMS_MIN_SIZE - ETH_HLEN - ETH_FCS_LEN;
Also do a check that the requested mtu is actually greater than the
minimum length, else we do not need to enable jumbo frames.
In practice this only introduced a very small range of mtus that did not
work properly. Newer chips allow 2000 byte large frames by default, and
older chips allow 1536 bytes long, which is equivalent to an mtu of
1514. So effectivly only mtus of 1515~1517 were broken.
Fixes: 6ae5834b983a ("net: dsa: b53: add MTU configuration support")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Usage of devm_alloc_etherdev_mqs() conflicts with
am65_cpsw_nuss_cleanup_ndev() as the same struct net_device instances
get unregistered twice. Switch to alloc_etherdev_mqs() and make sure
am65_cpsw_nuss_cleanup_ndev() unregisters and frees those net_device
instances properly.
With this, it is finally possible to rmmod the driver without oopsing
the kernel.
Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Reviewed-by: Roger Quadros <roger@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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In am65_cpsw_nuss_remove(), move the call to am65_cpsw_unregister_devlink()
after am65_cpsw_nuss_cleanup_ndev() to avoid triggering the
WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET) in
devl_port_unregister(). Makes it coherent with usage in
m65_cpsw_nuss_register_ndevs()'s cleanup path.
Fixes: 58356eb31d60 ("net: ti: am65-cpsw-nuss: Add devlink support")
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Move the tx cpu dma ring index update out of transmit loop of
airoha_dev_xmit routine in order to not start transmitting the packet
before it is fully DMA mapped (e.g. fragmented skbs).
Fixes: 23020f049327 ("net: airoha: Introduce ethernet support for EN7581 SoC")
Reported-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241004-airoha-eth-7581-mapping-fix-v1-1-8e4279ab1812@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit c938ab4da0eb ("net: phy: Manual remove LEDs to ensure correct
ordering") correctly fixed a problem with using devm_ but missed
removing the LED entry from the LEDs list.
This cause kernel panic on specific scenario where the port for the PHY
is torn down and up and the kmod for the PHY is removed.
On setting the port down the first time, the assosiacted LEDs are
correctly unregistered. The associated kmod for the PHY is now removed.
The kmod is now added again and the port is now put up, the associated LED
are registered again.
On putting the port down again for the second time after these step, the
LED list now have 4 elements. With the first 2 already unregistered
previously and the 2 new one registered again.
This cause a kernel panic as the first 2 element should have been
removed.
Fix this by correctly removing the element when LED is unregistered.
Reported-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Cc: stable@vger.kernel.org
Fixes: c938ab4da0eb ("net: phy: Manual remove LEDs to ensure correct ordering")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241004182759.14032-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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adin1110_read_fifo()
If 'frame_size' is too small or if 'round_len' is an error code, it is
likely that an error code should be returned to the caller.
Actually, 'ret' is likely to be 0, so if one of these sanity checks fails,
'success' is returned.
Return -EINVAL instead.
Fixes: bc93e19d088b ("net: ethernet: adi: Add ADIN1110 support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/8ff73b40f50d8fa994a454911b66adebce8da266.1727981562.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This reverts commit b514c47ebf41a6536551ed28a05758036e6eca7c.
The commit describes that we don't have to sync the page when
recycling, and it tries to optimize that case. But we do need
to sync after allocation. Recycling side should be changed to
pass the right sync size instead.
Fixes: b514c47ebf41 ("net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled")
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/20241004070846.2502e9ea@kernel.org
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Furong Xu <0x1207@gmail.com>
Link: https://patch.msgid.link/20241004142115.910876-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Accessing device registers seems to be not reliable, the chip
revision is sometimes detected wrongly (0 instead of expected 1).
Ensure that the chip reset is performed via reset GPIO and then
wait for 'Device Ready' status in HW_CFG register before doing
any register initializations.
Cc: stable@vger.kernel.org
Fixes: a1292595e006 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303")
Signed-off-by: Anatolij Gustschin <agust@denx.de>
[alex: reworked using read_poll_timeout()]
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/20241004113655.3436296-1-alexander.sverdlin@siemens.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If phy_read_mmd() fails, the error code stored in 'bmsr' should be returned
instead of 'val' which is likely to be 0.
Fixes: 75f4d8d10e01 ("net: phy: add Broadcom BCM84881 PHY driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/3e1755b0c40340d00e089d6adae5bca2f8c79e53.1727982168.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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PSE controllers like the TPS23881 can forcefully turn off their
configuration state. In such cases, the is_enabled() and get_status()
callbacks will report the PSE as disabled, while admin_state_enabled
will show it as enabled. This mismatch can lead the user to attempt
to enable it, but no action is taken as admin_state_enabled remains set.
The solution is to disable the PSE before enabling it, ensuring the
actual status matches admin_state_enabled.
Fixes: d83e13761d5b ("net: pse-pd: Use regulator framework within PSE framework")
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241002121706.246143-1-kory.maincent@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Previously, the TX header requirement for standard frames was ignored.
This requirement is a bitstring sent from the VIOS which maps to the
type of header information needed during TX. If no header information,
is needed then send subcrq direct can be used (which can be more
performant).
This bitstring was previously ignored for standard packets (AKA non LSO,
non CSO) due to the belief that the bitstring was over-cautionary. It
turns out that there are some configurations where the backing device
does need header information for transmission of standard packets. If
the information is not supplied then this causes continuous "Adapter
error" transport events. Therefore, this bitstring should be respected
and observed before considering the use of send subcrq direct.
Fixes: 74839f7a8268 ("ibmvnic: Introduce send sub-crq direct")
Signed-off-by: Nick Child <nnac123@linux.ibm.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241001163200.1802522-2-nnac123@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The blamed commit introduced an unexpected regression in the sja1105
driver. Packets from VLAN-unaware bridge ports get received correctly,
but the protocol stack can't seem to decode them properly.
For ds->untag_bridge_pvid users (thus also sja1105), the blamed commit
did introduce a functional change: dsa_switch_rcv() used to call
dsa_untag_bridge_pvid(), which looked like this:
err = br_vlan_get_proto(br, &proto);
if (err)
return skb;
/* Move VLAN tag from data to hwaccel */
if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) {
skb = skb_vlan_untag(skb);
if (!skb)
return NULL;
}
and now it calls dsa_software_vlan_untag() which has just this:
/* Move VLAN tag from data to hwaccel */
if (!skb_vlan_tag_present(skb)) {
skb = skb_vlan_untag(skb);
if (!skb)
return NULL;
}
thus lacks any skb->protocol == bridge VLAN protocol check. That check
is deferred until a later check for skb->vlan_proto (in the hwaccel area).
The new code is problematic because, for VLAN-untagged packets,
skb_vlan_untag() blindly takes the 4 bytes starting with the EtherType
and turns them into a hwaccel VLAN tag. This is what breaks the protocol
stack.
It would be tempting to "make it work as before" and only call
skb_vlan_untag() for those packets with the skb->protocol actually
representing a VLAN.
But the premise of the newly introduced dsa_software_vlan_untag() core
function is not wrong. Drivers set ds->untag_bridge_pvid or
ds->untag_vlan_aware_bridge_pvid presumably because they send all
traffic to the CPU reception path as VLAN-tagged. So why should we spend
any additional CPU cycles assuming that the packet may be VLAN-untagged?
And why does the sja1105 driver opt into ds->untag_bridge_pvid if it
doesn't always deliver packets to the CPU as VLAN-tagged?
The answer to the latter question is indeed more interesting: it doesn't
need to. This got done in commit 884be12f8566 ("net: dsa: sja1105: add
support for imprecise RX"), because I thought it would be needed, but I
didn't realize that it doesn't actually make a difference.
As explained in the commit message of the blamed patch, ds->untag_bridge_pvid
only makes a difference in the VLAN-untagged receive path of a bridge port.
However, in that operating mode, tag_sja1105.c makes use of VLAN tags
with the ETH_P_SJA1105 TPID, and it decodes and consumes these VLAN tags
as if they were DSA tags (aka tag_8021q operation). Even if commit
884be12f8566 ("net: dsa: sja1105: add support for imprecise RX") added
this logic in sja1105_bridge_vlan_add():
/* Always install bridge VLANs as egress-tagged on the CPU port. */
if (dsa_is_cpu_port(ds, port))
flags = 0;
that was for _bridge_ VLANs, which are _not_ committed to hardware
in VLAN-unaware mode (aka the mode where ds->untag_bridge_pvid does
anything at all). Even prior to that change, the tag_8021q VLANs
were always installed as egress-tagged on the CPU port, see
dsa_switch_tag_8021q_vlan_add():
u16 flags = 0; // egress-tagged, non-PVID
if (dsa_port_is_user(dp))
flags |= BRIDGE_VLAN_INFO_UNTAGGED |
BRIDGE_VLAN_INFO_PVID;
err = dsa_port_do_tag_8021q_vlan_add(dp, info->vid,
flags);
if (err)
return err;
Whether the sja1105 driver needs the new flag, ds->untag_vlan_aware_bridge_pvid,
rather than ds->untag_bridge_pvid, is a separate discussion. To fix the
current bug in VLAN-unaware bridge mode, I would argue that the sja1105
driver should not request something it doesn't need, rather than
complicating the core DSA helper. Whereas before the blamed commit, this
setting was harmless, now it has caused breakage.
Fixes: 93e4649efa96 ("net: dsa: provide a software untagging function on RX for VLAN-aware bridges")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20241001140206.50933-1-vladimir.oltean@nxp.com
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:
====================
Intel Wired LAN Driver Updates 2024-09-30 (ice, idpf)
This series contains updates to ice and idpf drivers:
For ice:
Michal corrects setting of dst VSI on LAN filters and adds clearing of
port VLAN configuration during reset.
Gui-Dong Han corrects failures to decrement refcount in some error
paths.
Przemek resolves a memory leak in ice_init_tx_topology().
Arkadiusz prevents setting of DPLL_PIN_STATE_SELECTABLE to an improper
value.
Dave stops clearing of VLAN tracking bit to allow for VLANs to be properly
restored after reset.
For idpf:
Ahmed sets uninitialized dyn_ctl_intrvl_s value.
Josh corrects use and reporting of mailbox size.
Larysa corrects order of function calls during de-initialization.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
idpf: deinit virtchnl transaction manager after vport and vectors
idpf: use actual mbx receive payload length
idpf: fix VF dynamic interrupt ctl register initialization
ice: fix VLAN replay after reset
ice: disallow DPLL_PIN_STATE_SELECTABLE for dpll output pins
ice: fix memleak in ice_init_tx_topology()
ice: clear port vlan config during reset
ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count()
ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()
ice: set correct dst VSI in only LAN filters
====================
Link: https://patch.msgid.link/20240930223601.3137464-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Remove the use of phy_set_max_speed in phy driver as the
function is mainly used in MAC driver to set the max
speed.
Instead use get_features to fix up Phy PMA capabilities for
AQR111, AQR111B0, AQR114C and AQCS109
Fixes: 038ba1dc4e54 ("net: phy: aquantia: add AQR111 and AQR111B0 PHY ID")
Fixes: 0974f1f03b07 ("net: phy: aquantia: remove false 5G and 10G speed ability for AQCS109")
Fixes: c278ec644377 ("net: phy: aquantia: add support for AQR114C PHY ID")
Link: https://lore.kernel.org/all/20240913011635.1286027-1-quic_abchauha@quicinc.com/T/
Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20241001224626.2400222-3-quic_abchauha@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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AQR115c reports incorrect PMA capabilities which includes
10G/5G and also incorrectly disables capabilities like autoneg
and 10Mbps support.
AQR115c as per the Marvell databook supports speeds up to 2.5Gbps
with autonegotiation.
Fixes: 0ebc581f8a4b ("net: phy: aquantia: add support for aqr115c")
Link: https://lore.kernel.org/all/20240913011635.1286027-1-quic_abchauha@quicinc.com/T/
Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20241001224626.2400222-2-quic_abchauha@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Yury reported a crash in the sfc driver originated from
netpoll_send_udp(). The netconsole sends a message and then netpoll
invokes the driver's NAPI function with a budget of zero. It is
dedicated to allow driver to free TX resources, that it may have used
while sending the packet.
In the netpoll case the driver invokes xdp_do_flush() unconditionally,
leading to crash because bpf_net_context was never assigned.
Invoke xdp_do_flush() only if budget is not zero.
Fixes: 401cb7dae8130 ("net: Reference bpf_redirect_info via task_struct on PREEMPT_RT.")
Reported-by: Yury Vostrikov <mon@unformed.ru>
Closes: https://lore.kernel.org/5627f6d1-5491-4462-9d75-bc0612c26a22@app.fastmail.com
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/20241002125837.utOcRo6Y@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When configuring the fiber port, the DP83869 PHY driver incorrectly
calls linkmode_set_bit() with a bit mask (1 << 10) rather than a bit
number (10). This corrupts some other memory location -- in case of
arm64 the priv pointer in the same structure.
Since the advertising flags are updated from supported at the end of the
function the incorrect line isn't needed at all and can be removed.
Fixes: a29de52ba2a1 ("net: dp83869: Add ability to advertise Fiber connection")
Signed-off-by: Ingo van Lil <inguin@gmx.de>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241002161807.440378-1-inguin@gmx.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from ieee802154, bluetooth and netfilter.
Current release - regressions:
- eth: mlx5: fix wrong reserved field in hca_cap_2 in mlx5_ifc
- eth: am65-cpsw: fix forever loop in cleanup code
Current release - new code bugs:
- eth: mlx5: HWS, fixed double-free in error flow of creating SQ
Previous releases - regressions:
- core: avoid potential underflow in qdisc_pkt_len_init() with UFO
- core: test for not too small csum_start in virtio_net_hdr_to_skb()
- vrf: revert "vrf: remove unnecessary RCU-bh critical section"
- bluetooth:
- fix uaf in l2cap_connect
- fix possible crash on mgmt_index_removed
- dsa: improve shutdown sequence
- eth: mlx5e: SHAMPO, fix overflow of hd_per_wq
- eth: ip_gre: fix drops of small packets in ipgre_xmit
Previous releases - always broken:
- core: fix gso_features_check to check for both
dev->gso_{ipv4_,}max_size
- core: fix tcp fraglist segmentation after pull from frag_list
- netfilter: nf_tables: prevent nf_skb_duplicated corruption
- sctp: set sk_state back to CLOSED if autobind fails in
sctp_listen_start
- mac802154: fix potential RCU dereference issue in
mac802154_scan_worker
- eth: fec: restart PPS after link state change"
* tag 'net-6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (48 commits)
sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
dt-bindings: net: xlnx,axi-ethernet: Add missing reg minItems
doc: net: napi: Update documentation for napi_schedule_irqoff
net/ncsi: Disable the ncsi work before freeing the associated structure
net: phy: qt2025: Fix warning: unused import DeviceId
gso: fix udp gso fraglist segmentation after pull from frag_list
bridge: mcast: Fail MDB get request on empty entry
vrf: revert "vrf: Remove unnecessary RCU-bh critical section"
net: ethernet: ti: am65-cpsw: Fix forever loop in cleanup code
net: phy: realtek: Check the index value in led_hw_control_get
ppp: do not assume bh is held in ppp_channel_bridge_input()
selftests: rds: move include.sh to TEST_FILES
net: test for not too small csum_start in virtio_net_hdr_to_skb()
net: gso: fix tcp fraglist segmentation after pull from frag_list
ipv4: ip_gre: Fix drops of small packets in ipgre_xmit
net: stmmac: dwmac4: extend timeout for VLAN Tag register busy bit check
net: add more sanity checks to qdisc_pkt_len_init()
net: avoid potential underflow in qdisc_pkt_len_init() with UFO
net: ethernet: ti: cpsw_ale: Fix warning on some platforms
net: microchip: Make FDMA config symbol invisible
...
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Fix the following warning when the driver is compiled as built-in:
warning: unused import: `DeviceId`
--> drivers/net/phy/qt2025.rs:18:5
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18 | DeviceId, Driver,
| ^^^^^^^^
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= note: `#[warn(unused_imports)]` on by default
device_table in module_phy_driver macro is defined only when the
driver is built as a module. Use phy::DeviceId in the macro instead of
importing `DeviceId` since `phy` is always used.
Fixes: fd3eaad826da ("net: phy: add Applied Micro QT2025 PHY driver")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202409190717.i135rfVo-lkp@intel.com/
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20240926121404.242092-1-fujita.tomonori@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.
dev_queue_xmit_nit is expected to be called with BH disabled.
__dev_queue_xmit has the following:
/* Disable soft irqs for various locks below. Also
* stops preemption for RCU.
*/
rcu_read_lock_bh();
VRF must follow this invariant. The referenced commit removed this
protection. Which triggered a lockdep warning:
================================
WARNING: inconsistent lock state
6.11.0 #1 Tainted: G W
--------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:
ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30
{IN-SOFTIRQ-W} state was registered at:
lock_acquire+0x19a/0x4f0
_raw_spin_lock+0x27/0x40
packet_rcv+0xa33/0x1320
__netif_receive_skb_core.constprop.0+0xcb0/0x3a90
__netif_receive_skb_list_core+0x2c9/0x890
netif_receive_skb_list_internal+0x610/0xcc0
[...]
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(rlock-AF_PACKET);
<Interrupt>
lock(rlock-AF_PACKET);
*** DEADLOCK ***
Call Trace:
<TASK>
dump_stack_lvl+0x73/0xa0
mark_lock+0x102e/0x16b0
__lock_acquire+0x9ae/0x6170
lock_acquire+0x19a/0x4f0
_raw_spin_lock+0x27/0x40
tpacket_rcv+0x863/0x3b30
dev_queue_xmit_nit+0x709/0xa40
vrf_finish_direct+0x26e/0x340 [vrf]
vrf_l3_out+0x5f4/0xe80 [vrf]
__ip_local_out+0x51e/0x7a0
[...]
Fixes: 504fc6f4f7f6 ("vrf: Remove unnecessary RCU-bh critical section")
Link: https://lore.kernel.org/netdev/20240925185216.1990381-1-greearb@candelatech.com/
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Cc: stable@vger.kernel.org
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240929061839.1175300-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|
This error handling has a typo. It should i++ instead of i--. In the
original code the error handling will loop until it crashes.
Fixes: da70d184a8c3 ("net: ethernet: ti: am65-cpsw: Introduce multi queue Rx")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://patch.msgid.link/8e7960cc-415d-48d7-99ce-f623022ec7b5@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|
Just like rtl8211f_led_hw_is_supported() and
rtl8211f_led_hw_control_set(), the rtl8211f_led_hw_control_get() also
needs to check the index value, otherwise the caller is likely to get
an incorrect rules.
Fixes: 17784801d888 ("net: phy: realtek: Add support for PHY LEDs on RTL8211F")
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Link: https://patch.msgid.link/20240927114610.1278935-1-hui.wang@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|
Networking receive path is usually handled from BH handler.
However, some protocols need to acquire the socket lock, and
packets might be stored in the socket backlog is the socket was
owned by a user process.
In this case, release_sock(), __release_sock(), and sk_backlog_rcv()
might call the sk->sk_backlog_rcv() handler in process context.
sybot caught ppp was not considering this case in
ppp_channel_bridge_input() :
WARNING: inconsistent lock state
6.11.0-rc7-syzkaller-g5f5673607153 #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
ksoftirqd/1/24 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff0000db7f11e0 (&pch->downl){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff0000db7f11e0 (&pch->downl){+.?.}-{2:2}, at: ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2272 [inline]
ffff0000db7f11e0 (&pch->downl){+.?.}-{2:2}, at: ppp_input+0x16c/0x854 drivers/net/ppp/ppp_generic.c:2304
{SOFTIRQ-ON-W} state was registered at:
lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5759
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2272 [inline]
ppp_input+0x16c/0x854 drivers/net/ppp/ppp_generic.c:2304
pppoe_rcv_core+0xfc/0x314 drivers/net/ppp/pppoe.c:379
sk_backlog_rcv include/net/sock.h:1111 [inline]
__release_sock+0x1a8/0x3d8 net/core/sock.c:3004
release_sock+0x68/0x1b8 net/core/sock.c:3558
pppoe_sendmsg+0xc8/0x5d8 drivers/net/ppp/pppoe.c:903
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x374/0x4f4 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__arm64_sys_sendto+0xd8/0xf8 net/socket.c:2212
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
irq event stamp: 282914
hardirqs last enabled at (282914): [<ffff80008b42e30c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last enabled at (282914): [<ffff80008b42e30c>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (282913): [<ffff80008b42e13c>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (282913): [<ffff80008b42e13c>] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:162
softirqs last enabled at (282904): [<ffff8000801f8e88>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last enabled at (282904): [<ffff8000801f8e88>] handle_softirqs+0xa3c/0xbfc kernel/softirq.c:582
softirqs last disabled at (282909): [<ffff8000801fbdf8>] run_ksoftirqd+0x70/0x158 kernel/softirq.c:928
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&pch->downl);
<Interrupt>
lock(&pch->downl);
*** DEADLOCK ***
1 lock held by ksoftirqd/1/24:
#0: ffff80008f74dfa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:325
stack backtrace:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:119
dump_stack+0x1c/0x28 lib/dump_stack.c:128
print_usage_bug+0x698/0x9ac kernel/locking/lockdep.c:4000
mark_lock_irq+0x980/0xd2c
mark_lock+0x258/0x360 kernel/locking/lockdep.c:4677
__lock_acquire+0xf48/0x779c kernel/locking/lockdep.c:5096
lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5759
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2272 [inline]
ppp_input+0x16c/0x854 drivers/net/ppp/ppp_generic.c:2304
ppp_async_process+0x98/0x150 drivers/net/ppp/ppp_async.c:495
tasklet_action_common+0x318/0x3f4 kernel/softirq.c:785
tasklet_action+0x68/0x8c kernel/softirq.c:811
handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554
run_ksoftirqd+0x70/0x158 kernel/softirq.c:928
smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164
kthread+0x288/0x310 kernel/kthread.c:389
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Fixes: 4cf476ced45d ("ppp: add PPPIOCBRIDGECHAN and PPPIOCUNBRIDGECHAN ioctls")
Reported-by: syzbot+bd8d55ee2acd0a71d8ce@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/66f661e2.050a0220.38ace9.000f.GAE@google.com/T/#u
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Parkin <tparkin@katalix.com>
Cc: James Chapman <jchapman@katalix.com>
Link: https://patch.msgid.link/20240927074553.341910-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5 fixes 2024-09-25
* tag 'mlx5-fixes-2024-09-25' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice
net/mlx5e: SHAMPO, Fix overflow of hd_per_wq
net/mlx5: HWS, changed E2BIG error to a negative return code
net/mlx5: HWS, fixed double-free in error flow of creating SQ
net/mlx5: Fix wrong reserved field in hca_cap_2 in mlx5_ifc
net/mlx5e: Fix NULL deref in mlx5e_tir_builder_alloc()
net/mlx5: Added cond_resched() to crdump collection
net/mlx5: Fix error path in multi-packet WQE transmit
====================
Link: https://patch.msgid.link/20240925202013.45374-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan
Stefan Schmidt says:
====================
pull-request: ieee802154 for net 2024-09-27
Jinjie Ruan added the use of IRQF_NO_AUTOEN in the mcr20a driver and fixed
and addiotinal build dependency problem while doing so.
Jiawei Ye, ensured a correct RCU handling in mac802154_scan_worker.
* tag 'ieee802154-for-net-2024-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan:
net: ieee802154: mcr20a: Use IRQF_NO_AUTOEN flag in request_irq()
mac802154: Fix potential RCU dereference issue in mac802154_scan_worker
ieee802154: Fix build error
====================
Link: https://patch.msgid.link/20240927094351.3865511-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.
auto-generated by the following:
for i in `git grep -l -w asm/unaligned.h`; do
sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
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Increase the timeout for checking the busy bit of the VLAN Tag register
from 10µs to 500ms. This change is necessary to accommodate scenarios
where Energy Efficient Ethernet (EEE) is enabled.
Overnight testing revealed that when EEE is active, the busy bit can
remain set for up to approximately 300ms. The new 500ms timeout provides
a safety margin.
Fixes: ed64639bc1e0 ("net: stmmac: Add support for VLAN Rx filtering")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://patch.msgid.link/20240924205424.573913-1-shenwei.wang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The number of register fields cannot be assumed to be ALE_FIELDS_MAX
as some platforms can have lesser fields.
Solve this by embedding the actual number of fields available
in platform data and use that instead of ALE_FIELDS_MAX.
Gets rid of the below warning on BeagleBone Black
[ 1.007735] WARNING: CPU: 0 PID: 33 at drivers/base/regmap/regmap.c:1208 regmap_field_init+0x88/0x9c
[ 1.007802] invalid empty mask defined
[ 1.007812] Modules linked in:
[ 1.007842] CPU: 0 UID: 0 PID: 33 Comm: kworker/u4:3 Not tainted 6.11.0-01459-g508403ab7b74-dirty #840
[ 1.007867] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 1.007890] Workqueue: events_unbound deferred_probe_work_func
[ 1.007935] Call trace:
[ 1.007957] unwind_backtrace from show_stack+0x10/0x14
[ 1.007999] show_stack from dump_stack_lvl+0x50/0x64
[ 1.008033] dump_stack_lvl from __warn+0x70/0x124
[ 1.008077] __warn from warn_slowpath_fmt+0x194/0x1a8
[ 1.008113] warn_slowpath_fmt from regmap_field_init+0x88/0x9c
[ 1.008154] regmap_field_init from devm_regmap_field_alloc+0x48/0x64
[ 1.008193] devm_regmap_field_alloc from cpsw_ale_create+0xfc/0x320
[ 1.008251] cpsw_ale_create from cpsw_init_common+0x214/0x354
[ 1.008286] cpsw_init_common from cpsw_probe+0x4ac/0xb88
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/netdev/CAMuHMdUf-tKRDzkz2_m8qdFTFutefddU0NTratVrEjRTzA3yQQ@mail.gmail.com/
Fixes: 11cbcfeaa79e ("net: ethernet: ti: cpsw_ale: use regfields for number of Entries and Policers")
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240924-am65-cpsw-multi-rx-fix-v1-1-0ca3fa9a1398@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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There is no need to ask the user about enabling Microchip FDMA
functionality, as all drivers that use it select the FDMA symbol.
Hence make the symbol invisible, unless when compile-testing.
Fixes: 30e48a75df9c6ead ("net: microchip: add FDMA library")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Link: https://patch.msgid.link/8e2bcd8899c417a962b7ee3f75b29f35b25d7933.1727171879.git.geert+renesas@glider.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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On link-state change, the controller gets reset,
which clears all PTP registers, including PHC time,
calibrated clock correction values etc. For correct
IEEE 1588 operation we need to restore these after
the reset.
Fixes: 6605b730c061 ("FEC: Add time stamping code and a PTP hardware clock")
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20240924093705.2897329-2-csokas.bence@prolan.hu
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
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On link state change, the controller gets reset,
causing PPS to drop out. Re-enable PPS if it was
enabled before the controller reset.
Fixes: 6605b730c061 ("FEC: Add time stamping code and a PTP hardware clock")
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
Link: https://patch.msgid.link/20240924093705.2897329-1-csokas.bence@prolan.hu
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The value is read from the register TXGBE_RX_GEN_CTL3, and it should be
written back to TXGBE_RX_GEN_CTL3 when it changes some fields.
Cc: stable@vger.kernel.org
Fixes: f629acc6f210 ("net: pcs: xpcs: support to switch mode for Wangxun NICs")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reported-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20240924022857.865422-1-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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When applying padding, the buffer is not zeroed, which results in memory
disclosure. The mentioned data is observed on the wire. This patch uses
skb_put_padto() to pad Ethernet frames properly. The mentioned function
zeroes the expanded buffer.
In case the packet cannot be padded it is silently dropped. Statistics
are also not incremented. This driver does not support statistics in the
old 32-bit format or the new 64-bit format. These will be added in the
future. In its current form, the patch should be easily backported to
stable versions.
Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets
in hardware, so software padding must be applied.
Fixes: 504d4721ee8e ("MIPS: Lantiq: Add ethernet driver")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20240923214949.231511-2-olek2@wp.pl
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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When the device is removed, idpf is supposed to make certain virtchnl
requests e.g. VIRTCHNL2_OP_DEALLOC_VECTORS and VIRTCHNL2_OP_DESTROY_VPORT.
However, this does not happen due to the referenced commit introducing
virtchnl transaction manager and placing its deinitialization before those
messages are sent. Then the sending is impossible due to no transactions
being available.
Lack of cleanup can lead to the FW becoming unresponsive from e.g.
unloading-loading the driver and creating-destroying VFs afterwards.
Move transaction manager deinitialization to after other virtchnl-related
cleanup is done.
Fixes: 34c21fa894a1 ("idpf: implement virtchnl transaction manager")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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When a mailbox message is received, the driver is checking for a non 0
datalen in the controlq descriptor. If it is valid, the payload is
attached to the ctlq message to give to the upper layer. However, the
payload response size given to the upper layer was taken from the buffer
metadata which is _always_ the max buffer size. This meant the API was
returning 4K as the payload size for all messages. This went unnoticed
since the virtchnl exchange response logic was checking for a response
size less than 0 (error), not less than exact size, or not greater than
or equal to the max mailbox buffer size (4K). All of these checks will
pass in the success case since the size provided is always 4K. However,
this breaks anyone that wants to validate the exact response size.
Fetch the actual payload length from the value provided in the
descriptor data_len field (instead of the buffer metadata).
Unfortunately, this means we lose some extra error parsing for variable
sized virtchnl responses such as create vport and get ptypes. However,
the original checks weren't really helping anyways since the size was
_always_ 4K.
Fixes: 34c21fa894a1 ("idpf: implement virtchnl transaction manager")
Cc: stable@vger.kernel.org # 6.9+
Signed-off-by: Joshua Hay <joshua.a.hay@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
|
The VF's dynamic interrupt ctl "dyn_ctl_intrvl_s" is not initialized
in idpf_vf_intr_reg_init(). This resulted in the following UBSAN error
whenever a VF is created:
[ 564.345655] UBSAN: shift-out-of-bounds in drivers/net/ethernet/intel/idpf/idpf_txrx.c:3654:10
[ 564.345663] shift exponent 4294967295 is too large for 32-bit type 'int'
[ 564.345671] CPU: 33 UID: 0 PID: 2458 Comm: NetworkManager Not tainted 6.11.0-rc4+ #1
[ 564.345678] Hardware name: Intel Corporation M50CYP2SBSTD/M50CYP2SBSTD, BIOS SE5C6200.86B.0027.P10.2201070222 01/07/2022
[ 564.345683] Call Trace:
[ 564.345688] <TASK>
[ 564.345693] dump_stack_lvl+0x91/0xb0
[ 564.345708] __ubsan_handle_shift_out_of_bounds+0x16b/0x320
[ 564.345730] idpf_vport_intr_update_itr_ena_irq.cold+0x13/0x39 [idpf]
[ 564.345755] ? __pfx_idpf_vport_intr_update_itr_ena_irq+0x10/0x10 [idpf]
[ 564.345771] ? static_obj+0x95/0xd0
[ 564.345782] ? lockdep_init_map_type+0x1a5/0x800
[ 564.345794] idpf_vport_intr_ena+0x5ef/0x9f0 [idpf]
[ 564.345814] idpf_vport_open+0x2cc/0x1240 [idpf]
[ 564.345837] idpf_open+0x6d/0xc0 [idpf]
[ 564.345850] __dev_open+0x241/0x420
Fixes: d4d558718266 ("idpf: initialize interrupts and enable vport")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
