- 02 Mar, 2020 15 commits
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
David S. Miller authored
Sunil Goutham says: ==================== net: thunderx: Miscellaneous changes This patchset has changes wrt driver performance optimization, load time optimization. And a change to PCI device regiatration table for timestamp device. ==================== Signed-off-by: -
Prakash Brahmajyosyula authored
Across Cavium's ThunderX and Marvell's OcteonTx2 silicons the PTP timestamping block's PCI device ID and vendor ID have remained same but the HW architecture has changed. Hence added PCI subsystem IDs to the device table to avoid this driver from being probed on OcteonTx2 silicons. Signed-off-by:
Prakash Brahmajyosyula <bprakash@marvell.com> Signed-off-by:
Sunil Goutham <sgoutham@marvell.com> Signed-off-by:
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Geetha sowjanya authored
Replace msleep() with usleep_range() as internally it uses hrtimers. This will put a cap on maximum wait time. Signed-off-by:
Geetha sowjanya <gakula@marvell.com> Signed-off-by:
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Sunil Goutham authored
With the current RX RED/DROP levels of 192/184 for CQE_RX, when packet incoming rate is high, LLC is getting polluted resulting in more cache misses and higher latency in packet processing. This slows down the whole process and performance loss. Hence reduced the levels to 224/216 (ie for a CQ size of 1024, Rx pkts will be red dropped or dropped when unused CQE are less than 128/160 respectively) Signed-off-by:
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David S. Miller authored
Sunil Goutham says: ==================== octeontx2: Flow control support and other misc changes This patch series adds flow control support (802.3 pause frames) and has other changes wrt generic admin function (AF) driver functionality. ==================== Signed-off-by: -
Sunil Goutham authored
Currently on the first check if the operation is still not finished, the poll goes to sleep for 2-5 usecs. But if for some reason (due to other priority stuff like interrupts etc) by the time the poll wakes up the 10ms time is expired then we don't check if operation is finished or not and return failure. This patch modifies poll logic to check HW operation after sleep so that the status is checked atleast twice. Signed-off-by:
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Sunil Goutham authored
Bus mastering is enabled by firmware, but when this driver is unbinded bus mastering gets disabled by the PCI subsystem which results interrupts not working when driver is reloaded. Hence set bus mastering everytime in probe(). Also - Converted pci_set_dma_mask() and pci_set_consistent_dma_mask() to dma_set_mask_and_coherent(). - Cleared transaction pending bit which gets set during driver unbind due to clearing of bus mastering (ME bit). Signed-off-by:
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Sunil Goutham authored
Currently there is no way for AF dependent drivers in any domain to check if the AF driver is loaded. This patch sets an ID for RVUM block which will automatically reflects in PF/VFs discovery register which they can check and defer their probe until AF is up. Signed-off-by:
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Linu Cherian authored
For retrieving info like interface MAC addresses, packet parser key extraction config etc currently a command is sent to firmware and firmware which periodically polls for commands, processes these and returns the info. This is resulting in interface initialization taking lot of time. To optimize this a memory region is shared between firmware and this driver, firmware while booting puts static info like these into that region for driver to read directly without using commands. With this - Logic for retrieving packet parser extraction config via commands is removed and repalced with using the shared 'fwdata' structure. - Now RVU MSIX vector address is also retrieved from this fwdata struct instead of from CSR. Otherwise when kexec/kdump crash kernel loads CSR will have a IOVA setup by primary kernel which impacts RVU PF/VF's interrupts. - Also added a mbox handler for PF/VF interfaces to retrieve their MAC addresses from AF. Signed-off-by:
Linu Cherian <lcherian@marvell.com> Signed-off-by:
Christina Jacob <cjacob@marvell.com> Signed-off-by:
Rakesh Babu <rsaladi2@marvell.com> Signed-off-by:
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Geetha sowjanya authored
Added mailbox requests to retrieve backpressure IDs from AF and Aura, CQ contexts are configured with these BPIDs. So that when resource levels reach configured thresholds they assert backpressure on the interface which is also mapped to same BPID. Also added support to enable/disable pause frames generation via ethtool. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Geetha sowjanya authored
CGX LMAC, the physical interface can generate pause frames when internal resources asserts backpressure due to exhaustion. This patch configures CGX to generate 802.3 pause frames. Also enabled processing of received pause frames on the line which will assert backpressure on the internal transmit path. Also added mailbox handlers for PF drivers to enable or disable pause frames anytime. Signed-off-by:
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Geetha sowjanya authored
Each of the interface receive channels can be backpressured by resources upon exhaustion or reaching configured threshold levels. Resources here are receive buffer queues (Auras) and pkt notification descriptor queues (CQs). Resources and interface channels are mapped using backpressure IDs (BPIDs). HW supports upto 512 BPIDs, this patch divides these BPIDs statically across CGX/LBK/SDP interfaces as follows. BPIDs 0 - 191 are mapped to LMAC channels, 16 per LMAC. BPIDs 192 - 255 are mapped to LBK channels. BPIDs 256 - 511 are mapped to SDP channels. Also did the needed basic configuration of BPIDs. Added mbox handlers with which a PF device can request for a BPID which it will use to configure Auras and CQs. Signed-off-by:
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Heiner Kallweit authored
Add constants for the used interrupts bits. This avoids the magic number for MII_VSC85XX_INT_MASK_MASK. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by:
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- 01 Mar, 2020 25 commits
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:David Ahern <dsahern@gmail.com> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
David S. Miller authored
Cris Forno says: ==================== net/ethtool: Introduce link_ksettings API for virtual network devices This series provides an API for drivers of virtual network devices that allows users to alter initial device speed and duplex settings to reflect the actual capabilities of underlying hardware. The changes made include a helper function ethtool_virtdev_set_link_ksettings, which is used to retrieve alterable link settings. In addition, there is a new ethtool function defined to validate those settings. These changes resolve code duplication for existing virtual network drivers that have already implemented this behavior. In the case of the ibmveth driver, this API is used to provide this capability for the first time. --- v7: - removed ethtool_validate_cmd function pointer parameter from ethtool_virtdev_set_link_ksettings since none of the virtual drivers pass in a custom validate function as suggested by Michal Kubecek. v6: - removed netvsc_validate_ethtool_ss_cmd(). netvsc_drv now uses ethtool_virtdev_validate_cmd() instead as suggested by Michal Kubecek and approved by Haiyang Zhang. - matched handler argument name of ethtool_virtdev_set_link_ksettings in declaration and definition as suggested by Michal Kubecek. - shortened validate variable assignment in ethtool_virtdev_set_link_ksettings as suggested by Michal Kubecek. v5: - virtdev_validate_link_ksettings is taken out of the ethtool global structure and is instead added as an argument to ethtool_virtdev_set_link_ksettings as suggested by Jakub Kicinski. v4: - Cleaned up return statement in ethtool_virtdev_validate_cmd based off of Michal Kubecek's and Thomas Falcon's suggestion. - If the netvsc driver is using the VF device in order to get accelerated networking, the real speed and duplex is reported by using the VF device as suggested by Stephen Hemminger. - The speed and duplex variables are now passed by value rather than passed by pointer as suggested by Willem de Bruijin and Michal Kubecek. - Removed ethtool_virtdev_get_link_ksettings since it was too simple to warrant a helper function. v3: - Factored out duplicated code to core/ethtool to provide API to virtual drivers v2: - Updated default driver speed/duplex settings to avoid breaking existing setups ==================== Signed-off-by: -
Cris Forno authored
With the ethtool_virtdev_set_link_ksettings function in core/ethtool.c, ibmveth, netvsc, and virtio now use the core's helper function. Funtionality changes that pertain to ibmveth driver include: 1. Changed the initial hardcoded link speed to 1GB. 2. Added support for allowing a user to change the reported link speed via ethtool. Functionality changes to the netvsc driver include: 1. When netvsc_get_link_ksettings is called, it will defer to the VF device if it exists to pull accelerated networking values, otherwise pull default or user-defined values. 2. Similarly, if netvsc_set_link_ksettings called and a VF device exists, the real values of speed and duplex are changed. Signed-off-by:
Cris Forno <cforno12@linux.vnet.ibm.com> Signed-off-by:
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Cris Forno authored
Three virtual devices (ibmveth, virtio_net, and netvsc) all have similar code to set link settings and validate ethtool command. To eliminate duplication of code, it is factored out into core/ethtool.c. Signed-off-by:
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David S. Miller authored
Taehee Yoo says: ==================== hsr: several code cleanup for hsr module This patchset is to clean up hsr module code. 1. The first patch is to use debugfs_remove_recursive(). If it uses debugfs_remove_recursive() instead of debugfs_remove(), hsr_priv() doesn't need to have "node_tbl_file" pointer variable. 2. The second patch is to use extack error message. If HSR uses the extack instead of netdev_info(), users can get error messages immediately without any checking the kernel message. 3. The third patch is to use netdev_err() instead of WARN_ONCE(). When a packet is being sent, hsr_addr_subst_dest() is called and it tries to find the node with the ethernet destination address. If it couldn't find a node, it warns with WARN_ONCE(). But, using WARN_ONCE() is a little bit overdoing. So, in this patch, netdev_err() is used instead. 4. The fourth patch is to remove unnecessary rcu_read_{lock/unlock}(). There are some rcu_read_{lock/unlock}() in hsr module and some of them are unnecessary. In this patch, these unnecessary rcu_read_{lock/unlock}() will be removed. 5. The fifth patch is to use upper/lower device infrastructure. netdev_upper_dev_link() is useful to manage lower/upper interfaces. And this function internally validates looping, maximum depth. If hsr module uses upper/lower device infrastructure, it can prevent these above problems. ==================== Signed-off-by: -
Taehee Yoo authored
netdev_upper_dev_link() is useful to manage lower/upper interfaces. And this function internally validates looping, maximum depth. All or most virtual interfaces that could have a real interface (e.g. macsec, macvlan, ipvlan etc.) use lower/upper infrastructure. Signed-off-by:
Taehee Yoo <ap420073@gmail.com> Signed-off-by:
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Taehee Yoo authored
In order to access the port list, the hsr_port_get_hsr() is used. And this is protected by RTNL and RCU. The hsr_fill_info(), hsr_check_carrier(), hsr_dev_open() and hsr_get_max_mtu() are protected by RTNL. So, rcu_read_lock() in these functions are not necessary. The hsr_handle_frame() also uses rcu_read_lock() but this function is called by packet path. It's already protected by RCU. So, the rcu_read_lock() in hsr_handle_frame() can be removed. Signed-off-by:
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Taehee Yoo authored
When HSR interface is sending a frame, it finds a node with the destination ethernet address from the list. If there is no node, it calls WARN_ONCE(). But, using WARN_ONCE() for this situation is a little bit overdoing. So, in this patch, the netdev_err() is used instead. Signed-off-by:
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Taehee Yoo authored
If HSR uses the extack instead of netdev_info(), users can get error messages immediately without any checking the kernel message. Signed-off-by:
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Taehee Yoo authored
If it uses debugfs_remove_recursive() instead of debugfs_remove(), hsr_priv() doesn't need to have "node_tbl_file" pointer variable. Signed-off-by:
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Oleksij Rempel authored
The port to phylink was done as close as possible to initial functionality. Signed-off-by:
Oleksij Rempel <o.rempel@pengutronix.de> Acked-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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David S. Miller authored
Esben Haabendal says: ==================== net: ll_temac: RX/TX ring size and coalesce ethtool parameters This series adds support for RX/TX ring size and irq coalesce ethtool parameters to ll_temac driver. ==================== Signed-off-by: -
Esben Haabendal authored
Please note that the delays are calculated based on typical parameters. But as TEMAC is an HDL IP, designs may vary, and future work might be needed to make this calculation configurable. Signed-off-by:
Esben Haabendal <esben@geanix.com> Signed-off-by:
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Esben Haabendal authored
Add support for setting the RX and TX ring sizes for this driver using ethtool. Also increase the default RX ring size as the previous default was far too low for good performance in some configurations. Signed-off-by:
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Esben Haabendal authored
The start_p variable was included in the initial commit, commit 92744989 ("net: add Xilinx ll_temac device driver"), but has never had any real use. Signed-off-by:
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