- 06 Sep, 2024 1 commit
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Joe Damato authored
In commit 6f8b12d6 ("net: napi: add hard irqs deferral feature") napi_defer_irqs was added to net_device and napi_defer_irqs_count was added to napi_struct, both as type int. This value never goes below zero, so there is not reason for it to be a signed int. Change the type for both from int to u32, and add an overflow check to sysfs to limit the value to S32_MAX. The limit of S32_MAX was chosen because the practical limit before this patch was S32_MAX (anything larger was an overflow) and thus there are no behavioral changes introduced. If the extra bit is needed in the future, the limit can be raised. Before this patch: $ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' $ cat /sys/class/net/eth4/napi_defer_hard_irqs -2147483647 After this patch: $ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' bash: line 0: echo: write error: Numerical result out of range Similarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned: include/linux/netdevice.h: unsigned int tx_queue_len; And has an overflow check: dev_change_tx_queue_len(..., unsigned long new_len): if (new_len != (unsigned int)new_len) return -ERANGE; Suggested-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Joe Damato <jdamato@fastly.com> Reviewed-by:
Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20240904153431.307932-1-jdamato@fastly.comSigned-off-by:
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- 05 Sep, 2024 14 commits
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Paolo Abeni authored
Frank Sae says: ==================== Add driver for Motorcomm yt8821 2.5G ethernet phy yt8521 and yt8531s as Gigabit transceiver use bit15:14(bit9 reserved default 0) as phy speed mask, yt8821 as 2.5G transceiver uses bit9 bit15:14 as phy speed mask. Be compatible to yt8821, reform phy speed mask and phy speed macro. Based on update above, add yt8821 2.5G phy driver. ==================== Link: https://patch.msgid.link/20240901083526.163784-1-Frank.Sae@motor-comm.comSigned-off-by:
Paolo Abeni <pabeni@redhat.com>
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Frank Sae authored
Add a driver for the motorcomm yt8821 2.5G ethernet phy. Verified the driver on BPI-R3(with MediaTek MT7986(Filogic 830) SoC) development board, which is developed by Guangdong Bipai Technology Co., Ltd.. yt8821 2.5G ethernet phy works in AUTO_BX2500_SGMII or FORCE_BX2500 interface, supports 2.5G/1000M/100M/10M speeds, and wol(magic package). Signed-off-by:
Frank Sae <Frank.Sae@motor-comm.com> Reviewed-by:
Sai Krishna <saikrishnag@marvell.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Frank Sae authored
yt8521 and yt8531s as Gigabit transceiver use bit15:14(bit9 reserved default 0) as phy speed mask, yt8821 as 2.5G transceiver uses bit9 bit15:14 as phy speed mask. Be compatible to yt8821, reform phy speed mask and phy speed macro. Reviewed-by:
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Paolo Abeni authored
Merge tag 'linux-can-next-for-6.12-20240904-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2024-09-04-2 this is a pull request of 18 patches for net-next/master. All 18 patches add support for CAN-FD IP core found on Rockchip RK3568. The first patch is co-developed by Elaine Zhang and me and adds DT bindings documentation. The remaining 17 patches are by me and add the driver in several stages. linux-can-next-for-6.12-20240904-2 * tag 'linux-can-next-for-6.12-20240904-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next: can: rockchip_canfd: add support for CAN_CTRLMODE_BERR_REPORTING can: rockchip_canfd: add support for CAN_CTRLMODE_LOOPBACK can: rockchip_canfd: add hardware timestamping support can: rockchip_canfd: enable full TX-FIFO depth of 2 can: rockchip_canfd: prepare to use full TX-FIFO depth can: rockchip_canfd: add stats support for errata workarounds can: rockchip_canfd: rkcanfd_get_berr_counter_corrected(): work around broken {RX,TX}ERRORCNT register can: rockchip_canfd: implement workaround for erratum 12 can: rockchip_canfd: implement workaround for erratum 6 can: rockchip_canfd: add TX PATH can: rockchip_canfd: rkcanfd_register_done(): add warning for erratum 5 can: rockchip_canfd: rkcanfd_handle_rx_int_one(): implement workaround for erratum 5: check for empty FIFO can: rockchip_canfd: add notes about known issues can: rockchip_canfd: add support for rk3568v3 can: rockchip_canfd: add quirk for broken CAN-FD support can: rockchip_canfd: add quirks for errata workarounds can: rockchip_canfd: add driver for Rockchip CAN-FD controller dt-bindings: can: rockchip_canfd: add rockchip CAN-FD controller ==================== Link: https://patch.msgid.link/20240904130256.1965582-1-mkl@pengutronix.deSigned-off-by:
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Chen Ni authored
Replace comma between expressions with semicolons. Using a ',' in place of a ';' can have unintended side effects. Although that is not the case here, it is seems best to use ';' unless ',' is intended. Found by inspection. No functional change intended. Compile tested only. Signed-off-by:
Chen Ni <nichen@iscas.ac.cn> Acked-by:
Richard Cochran <richardcochran@gmail.com> Reviewed-by:
Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240904015003.1065872-1-nichen@iscas.ac.cnSigned-off-by:
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Hongbo Li authored
Add the __counted_by compiler attribute to the flexible array member entries to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by:
Hongbo Li <lihongbo22@huawei.com> Link: https://patch.msgid.link/20240904014956.2035117-1-lihongbo22@huawei.comSigned-off-by:
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Paolo Abeni authored
Hangbin Liu says: ==================== Bonding: support new xfrm state offload functions Add 2 new xfrm state offload functions xdo_dev_state_advance_esn and xdo_dev_state_update_stats for bonding. The xdo_dev_state_free will be added by Jianbo's patchset [1]. I will add the bonding xfrm policy offload in future. v7: no update, just rebase the code. v6: Use "Return: " based on ./scripts/kernel-doc (Simon Horman) v5: Rebase to latest net-next, update function doc (Jakub Kicinski) v4: Ratelimit pr_warn (Sabrina Dubroca) v3: Re-format bond_ipsec_dev, use slave_warn instead of WARN_ON (Nikolay Aleksandrov) Fix bond_ipsec_dev defination, add *. (Simon Horman, kernel test robot) Fix "real" typo (kernel test robot) v2: Add a function to process the common device checking (Nikolay Aleksandrov) Remove unused variable (Simon Horman) v1: lore.kernel.org/netdev/20240816035518.203704-1-liuhangbin@gmail.com ==================== Link: https://patch.msgid.link/20240904003457.3847086-1-liuhangbin@gmail.comSigned-off-by: -
Hangbin Liu authored
The patch add xfrm statistics update for bonding IPsec offload. Reviewed-by:
Nikolay Aleksandrov <razor@blackwall.org> Acked-by:
Jay Vosburgh <jv@jvosburgh.net> Signed-off-by:
Hangbin Liu <liuhangbin@gmail.com> Signed-off-by:
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Hangbin Liu authored
Currently, users can see that bonding supports IPSec HW offload via ethtool. However, this functionality does not work with NICs like Mellanox cards when ESN (Extended Sequence Numbers) is enabled, as ESN functions are not yet supported. This patch adds ESN support to the bonding IPSec device offload, ensuring proper functionality with NICs that support ESN. Reviewed-by:
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Hangbin Liu authored
This patch adds a common function to check the status of IPSec devices. This function will be useful for future implementations, such as IPSec ESN and state offload callbacks. Suggested-by:
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Tan En De authored
Minimize access to the RX descriptor by collecting all the flags in a local variable and then updating the descriptor at once. Signed-off-by:
Tan En De <ende.tan@starfivetech.com> Link: https://patch.msgid.link/20240831011114.2065912-1-ende.tan@starfivetech.comSigned-off-by:
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Jakub Kicinski authored
Merge tag 'wireless-next-2024-09-04' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Kalle Valo says: ==================== pull-request: wireless-next-2024-09-04 here's a pull request to net-next tree, more info below. Please let me know if there are any problems. ==================== Conflicts: drivers/net/wireless/ath/ath12k/hw.c 38055789 ("wifi: ath12k: use 128 bytes aligned iova in transmit path for WCN7850") 8be12629 ("wifi: ath12k: restore ASPM for supported hardwares only") https://lore.kernel.org/87msldyj97.fsf@kernel.org Link: https://patch.msgid.link/20240904153205.64C11C4CEC2@smtp.kernel.orgSigned-off-by:
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Sean Anderson authored
This NIC doesn't have hardware IRQ coalescing. Under high load, interrupts can adversely affect performance. To mitigate this, enable software IRQ coalescing by default. On my system this increases receive throughput with iperf3 from 853 MBit/sec to 934 MBit/s, decreases interrupts from 69489/sec to 2016/sec, and decreases CPU utilization from 27% (4x Cortex-A53) to 14%. Latency is not affected (as far as I can tell). Signed-off-by:
Sean Anderson <sean.anderson@linux.dev> Reviewed-by:
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Niklas Söderlund authored
When reading registers from the PHY using the SIOCGMIIREG IOCTL any errors returned from either mdiobus_read() or mdiobus_c45_read() are ignored, and parts of the returned error is passed as the register value back to user-space. For example, if mdiobus_c45_read() is used with a bus that do not implement the read_c45() callback -EOPNOTSUPP is returned. This is however directly stored in mii_data->val_out and returned as the registers content. As val_out is a u16 the error code is truncated and returned as a plausible register value. Fix this by first checking the return value for errors before returning it as the register content. Before this patch, # phytool read eth0/0:1/0 0xffa1 After this change, $ phytool read eth0/0:1/0 error: phy_read (-95) Signed-off-by:Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by:
Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by:
Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20240903171536.628930-1-niklas.soderlund+renesas@ragnatech.seSigned-off-by:
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- 04 Sep, 2024 25 commits
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Li Zetao authored
Since the debugfs_create_dir() never returns a null pointer, checking the return value for a null pointer is redundant, and using IS_ERR is safe enough. Signed-off-by:
Li Zetao <lizetao1@huawei.com> Link: https://patch.msgid.link/20240903143343.2004652-1-lizetao1@huawei.comSigned-off-by:
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Li Zetao authored
Since the debugfs_create_dir() never returns a null pointer, checking the return value for a null pointer is redundant, and using IS_ERR is safe enough. Signed-off-by:
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Jakub Kicinski authored
Ido Schimmel says: ==================== Unmask upper DSCP bits - part 3 tl;dr - This patchset continues to unmask the upper DSCP bits in the IPv4 flow key in preparation for allowing IPv4 FIB rules to match on DSCP. No functional changes are expected. The TOS field in the IPv4 flow key ('flowi4_tos') is used during FIB lookup to match against the TOS selector in FIB rules and routes. It is currently impossible for user space to configure FIB rules that match on the DSCP value as the upper DSCP bits are either masked in the various call sites that initialize the IPv4 flow key or along the path to the FIB core. In preparation for adding a DSCP selector to IPv4 and IPv6 FIB rules, we need to make sure the entire DSCP value is present in the IPv4 flow key. This patchset continues to unmask the upper DSCP bits, but this time in the output route path, specifically in the callers of ip_route_output_ports(). The next patchset (last) will handle the callers of ip_route_output_key(). Split from this patchset to avoid going over the 15 patches limit. No functional changes are expected as commit 1fa3314c ("ipv4: Centralize TOS matching") moved the masking of the upper DSCP bits to the core where 'flowi4_tos' is matched against the TOS selector. ==================== Link: https://patch.msgid.link/20240903135327.2810535-1-idosch@nvidia.comSigned-off-by: -
Ido Schimmel authored
Unmask the upper DSCP bits when calling ip_route_output_ports() so that in the future it could perform the FIB lookup according to the full DSCP value. Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Reviewed-by:
Guillaume Nault <gnault@redhat.com> Reviewed-by:
David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20240903135327.2810535-5-idosch@nvidia.comSigned-off-by:
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Ido Schimmel authored
Unmask the upper DSCP bits when calling ip_route_output_ports() so that in the future it could perform the FIB lookup according to the full DSCP value. Signed-off-by:
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Ido Schimmel authored
Unmask the upper DSCP bits when calling ip_route_output_ports() so that in the future it could perform the FIB lookup according to the full DSCP value. Signed-off-by:
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Ido Schimmel authored
The function is passed the full DS field in its 'tos' argument by its two callers. It then masks the upper DSCP bits using RT_TOS() when passing it to ip_route_output_ports(). Unmask the upper DSCP bits when passing 'tos' to ip_route_output_ports() so that in the future it could perform the FIB lookup according to the full DSCP value. Signed-off-by:
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Chen Ni authored
Replace comma between expressions with semicolons. Using a ',' in place of a ';' can have unintended side effects. Although that is not the case here, it is seems best to use ';' unless ',' is intended. Found by inspection. No functional change intended. Compile tested only. Signed-off-by:
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Ido Schimmel authored
RT_TOS() from include/uapi/linux/in_route.h is defined using IPTOS_TOS_MASK from include/uapi/linux/ip.h. This is problematic for files such as include/net/ip_fib.h that want to use RT_TOS() as without including both header files kernel compilation fails: In file included from ./include/net/ip_fib.h:25, from ./include/net/route.h:27, from ./include/net/lwtunnel.h:9, from net/core/dst.c:24: ./include/net/ip_fib.h: In function ‘fib_dscp_masked_match’: ./include/uapi/linux/in_route.h:31:32: error: ‘IPTOS_TOS_MASK’ undeclared (first use in this function) 31 | #define RT_TOS(tos) ((tos)&IPTOS_TOS_MASK) | ^~~~~~~~~~~~~~ ./include/net/ip_fib.h:440:45: note: in expansion of macro ‘RT_TOS’ 440 | return dscp == inet_dsfield_to_dscp(RT_TOS(fl4->flowi4_tos)); Therefore, cited commit changed linux/in_route.h to include linux/ip.h. However, as reported by David, this breaks iproute2 compilation due overlapping definitions between linux/ip.h and /usr/include/netinet/ip.h: In file included from ../include/uapi/linux/in_route.h:5, from iproute.c:19: ../include/uapi/linux/ip.h:25:9: warning: "IPTOS_TOS" redefined 25 | #define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK) | ^~~~~~~~~ In file included from iproute.c:17: /usr/include/netinet/ip.h:222:9: note: this is the location of the previous definition 222 | #define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) Fix by changing include/net/ip_fib.h to include linux/ip.h. Note that usage of RT_TOS() should not spread further in the kernel due to recent work in this area. Fixes: 1fa3314c ("ipv4: Centralize TOS matching") Reported-by: -
James Chapman authored
Commit aa92c1ce ("l2tp: add tunnel/session get_next helpers") uses idr_get_next APIs to iterate over l2tp session IDR lists. Sessions in l2tp_v2_session_idr always have a non-null session->tunnel pointer since l2tp_session_register sets it before inserting the session into the IDR. Therefore the null check on session->tunnel in l2tp_v2_session_get_next is redundant and can be removed. Removing the check avoids a warning from lkp. Reported-by:
kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/r/202408111407.HtON8jqa-lkp@intel.com/ CC: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by:
James Chapman <jchapman@katalix.com> Acked-by:
Tom Parkin <tparkin@katalix.com> Reviewed-by:
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Shradha Gupta authored
The mana_set_channels() function requires detaching the mana driver and reattaching it with changed channel values. During this operation if the system is low on memory, the reattach might fail, causing the network device being down. To avoid this we pre-allocate buffers at the beginning of set operation, to prevent complete network loss Signed-off-by:
Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by:
Gerhard Engleder <gerhard@engleder-embedded.com> Reviewed-by:
Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1725248734-21760-1-git-send-email-shradhagupta@linux.microsoft.comSigned-off-by:
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Marc Kleine-Budde authored
Marc Kleine-Budde <mkl@pengutronix.de> says: This series adds support for the CAN-FD IP core found on the Rockchip RK3568. The IP core is a bit complicated and has several documented errata. The driver is added in several stages, first the base driver including the RX-path. Then several workarounds for errata and the TX-path, and finally features like hardware time stamping, loop-back mode and bus error reporting. Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-0-8ae22bcb27cc@pengutronix.de [mkl: removed DTS patches] Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Marc Kleine-Budde authored
Add support for Bus Error Reporting. Tested-by:
Alibek Omarov <a1ba.omarov@gmail.com> Acked-by:
Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-20-8ae22bcb27cc@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
Add support for loopback mode. Tested-by:
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Marc Kleine-Budde authored
Add support for hardware based timestamping. Tested-by:
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Marc Kleine-Budde authored
The previous commit prepared the TX path to make use of the full TX-FIFO depth as much as possible. Increase the available TX-FIFO depth to the hardware maximum of 2. Tested-by:
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Marc Kleine-Budde authored
So far the TX-FIFO is only used with a depth of 1, although the hardware offers a depth of 2. The workaround for the chips that are affected by erratum 6, i.e. EFF frames may be send as standard frames, is to re-send the EFF frame. This means the driver cannot queue the next frame for sending, as long ad the EFF frame has not been successfully send out. Introduce rkcanfd_get_effective_tx_free() that returns "0" space in the TX-FIFO if an EFF frame is pending and the actual free space in the TX-FIFO otherwise. Then replace rkcanfd_get_tx_free() with rkcanfd_get_effective_tx_free() everywhere. Tested-by:
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Marc Kleine-Budde authored
The driver contains workarounds for some of the rk3568v2 errata. Add ethtool-based statistics ("ethtool -S") to track how often an erratum workaround was needed. Tested-by: -
Marc Kleine-Budde authored
can: rockchip_canfd: rkcanfd_get_berr_counter_corrected(): work around broken {RX,TX}ERRORCNT register Tests show that sometimes both CAN bus error counters read 0x0, even if the controller is in warning mode (RKCANFD_REG_STATE_ERROR_WARNING_STATE in RKCANFD_REG_STATE set). To work around this issue, if both error counters read from hardware are 0x0, use the structure priv->bec, otherwise save the read value in priv->bec. In rkcanfd_handle_rx_int_one() decrement the priv->bec.rxerr for successfully RX'ed CAN frames. In rkcanfd_handle_tx_done_one() decrement the priv->bec.txerr for successfully TX'ed CAN frames. Tested-by: -
Marc Kleine-Budde authored
The rk3568 CAN-FD errata sheet as of Tue 07 Nov 2023 11:25:31 +08:00 says: | A dominant bit at the third bit of the intermission may cause a | transmission error. | | When sampling the third bit of the intermission as a dominant bit, if | tx_req is configured to transmit extended frames at this time, the | extended frame may be sent to the bus in the format of a standard | frame. The extended frame will be sent as a standard frame and will not | result in error frames Turn on "Interframe Spaceing RX Mode" only during TX to work around erratum 12, according to rock-chip: | Spaceing RX Mode = 1, the third Bit between frames cannot receive | and send, and the fourth Bit begins to receive and send. | | Spaceing RX Mode = 0, allowing the third Bit between frames to | receive and send. Message-ID: <be72939f-0a9e-0608-dfff-7b0096a26eba@rock-chips.com> Tested-by:
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Marc Kleine-Budde authored
The rk3568 CAN-FD errata sheet as of Tue 07 Nov 2023 11:25:31 +08:00 says: | The CAN controller's transmission of extended frames may | intermittently change into standard frames. | | When using the CAN controller to send extended frames, if the | 'tx_req' is configured as 1 and coincides with the internal | transmission point, the extended frame will be transmitted onto the | bus in the format of a standard frame. To work around Erratum 6, the driver is in self-receiving mode (RXSTX) and all received CAN frames are passed through rkcanfd_rxstx_filter(). Add a check in rkcanfd_rxstx_filter() whether the received frame corresponds to the current outgoing frame, but the extended CAN ID has been mangled to a standard ID. In this case re-send the original CAN frame. Tested-by:
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Marc Kleine-Budde authored
The IP core has a TX event FIFO. In other IP cores, this type of FIFO usually contains the events that a CAN frame has been successfully sent. However, the IP core on the rk3568v2 the FIFO also holds events of unsuccessful transmission attempts. It turned out that the best way to work around this problem is to set the IP core to self-receive mode (RXSTX), filter out the self-received frames and insert them into the complete TX path. Add a pair new functions to check if 2 struct canfd_frame are equal. The 1st checks if the header of the CAN frames are equal, the 2nd checks if the data portion are equal: - rkcanfd_can_frame_header_equal() - rkcanfd_can_frame_data_equal() Tested-by:
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Marc Kleine-Budde authored
Tests on the rk3568v2 and rk3568v3 show that a reduced "baudclk" (e.g. 80MHz, compared to the standard 300MHz) significantly increases the possibility of incorrect FIFO counters, i.e. erratum 5. Print an info message if the clock is below the known good value of 300MHz. Tested-by:
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Marc Kleine-Budde authored
can: rockchip_canfd: rkcanfd_handle_rx_int_one(): implement workaround for erratum 5: check for empty FIFO The rk3568 CAN-FD errata sheet as of Tue 07 Nov 2023 11:25:31 +08:00 says: | Erratum 5: Counters related to the TXFIFO and RXFIFO exhibit | abnormal counting behavior. | | Due to a bug in the cross-asynchronous logic of the enable signals | for rx_fifo_cnt and txe_fifo_frame_cnt counters, the counts of these | two counters become inaccurate. This issue has resulted in the | inability to use the TXFIFO and RXFIFO functions. The errata sheet mentioned above states that only the rk3568v2 is affected by this erratum, but tests with the rk3568v2 and rk3568v3 show that the RX_FIFO_CNT is sometimes too high. This leads to CAN frames being read from the FIFO, which is then already empty. Further tests on the rk3568v2 and rk3568v3 show that in this situation (i.e. empty FIFO) all elements of the FIFO header (frameinfo, id, ts) contain the same data. On the rk3568v2 and rk3568v3, this problem only occurs extremely rarely with the standard clock of 300 MHz, but almost immediately at 80 MHz. To workaround this problem, check for empty FIFO with rkcanfd_fifo_header_empty() in rkcanfd_handle_rx_int_one() and exit early. Tested-by:
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Marc Kleine-Budde authored
Even the rk3568v3 has some known issues. Document them together with a reproducer. Tested-by:
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