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2021-06-10net: axienet: Use devm_platform_get_and_ioremap_resource()Yang Yingliang1-5/+2
Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-10net: w5100: Use devm_platform_get_and_ioremap_resource()Yang Yingliang1-6/+1
Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-10Merge tag 'mlx5-fixes-2021-06-09' of ↵David S. Miller16-72/+111
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-fixes-2021-06-09 ==================== Signed-off-by: David S. Miller <[email protected]>
2021-06-10Merge tag 'mlx5-updates-2021-06-09' of ↵David S. Miller26-120/+2373
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2021-06-09 Introduce steering header insert/remove and switchdev bridge offloads 1) From Yevgeny, Steering header insert/remove support ConnectX supports offloading of various encapsulations and decapsulations (e.g. VXLAN), which are performed by 'Packet Reformat' action. Starting with ConnectX-6 DX, a new reformat type is supported - INSERT_HEADER. This reformat allows inserting an arbitrary size buffer at a selected location in the packet on RX flows. The insert/remove header support are needed as a prerequisite for the bridge offloads vlan pop/push supprt, see below. 2) From Vlad, Support for bridge offloads for switchdev mode This change implements bridge offloads with VLAN-support that works on top of mlx5 representors in switchdev mode. HIGH-LEVEL OVERVIEW Hardware supported by mlx5 driver doesn't provide dynamic learning or aging functionality and requires the driver to emulate all switch-like behavior in software. As such, all packets by default go through miss path, appear on representor and get to software bridge, if it is the upper device of the representor. This causes bridge to process packet in software, learn the MAC address to FDB and send SWITCHDEV_FDB_ADD_TO_DEVICE event to all subscribers. Upon reception of SWITCHDEV_FDB_ADD_TO_DEVICE notification mlx5 bridge offloads the FDB to hardware and sends back SWITCHDEV_FDB_ADD_TO_BRIDGE notification to prevent such entries from being aged out by kernel bridge. Leaving aging to kernel bridge would result deletion of offloaded dynamic FDB entries every aging_time period due to packets being processed by hardware and, consecutively, 'used' timestamp for FDB entry not being updated. Hardware aging is emulated in driver by running periodic workqueue task that manually updates the rules according to their hardware counter: - If hardware counter has changed since last update, the handler updates 'used' timestamp in kernel bridge dynamic entry by sending SWITCHDEV_FDB_ADD_TO_BRIDGE notification for the entry. - If FDB entry wasn't updated for user-controllable aging_time period, then the FDB entry is unoffloaded from hardware and corresponding SWITCHDEV_FDB_DEL_TO_BRIDGE notification is sent to kernel bridge. The mlx5 bridge offload implementation fully supports port VLAN objects, including PVID (vlan push) and "Egress Untagged" (vlan pop). SOFTWARE ARCHITECTURE Mlx5_eswitch is extended with pointer to new mlx5_esw_bridge_offloads structure which has a linked list of mlx5_esw_bridge objects. Struct mlx5_esw_bridge is the main switch object in mlx5 that holds all data for offloaded FDB entries and metadata for bridge ports and their vlans. The mlx5_esw_bridge object is created when first representor of eswitch vport is added to bridge and deleted when the last representor is detached from it. Bridge FDB entries are saved in linked list (to iterate over all FDB entries in aging workqueue task) and also in hashtable for quick lookup by MAC+VLAN tuple. Bridge FDB entries are saved in linked list (to iterate over all FDB entries in aging workqueue task) and in hashtable for quick lookup by MAC+VLAN tuple. Port metadata is stored in struct mlx5_esw_bridge_port that is saved in xarray to allow quick lookup by vport number. Part of the port metadata is the set of port vlans that are represented by mlx5_esw_bridge_vlan structure. The vlan structure points to all FDBs on vlan/port via fdb_list linked list. Simplified diagram of mlx5 bridge objects: +------------------+ | mxl5_eswitch | | | | br_offloads | +--------+---------+ | +--------v-------------------+ | mlx5_esw_bridge_offloads | | | +--> bridges | | +-------+--------------------+ | | | | | +---v---------------+ | | mlx5_esw_bridge | | | | | | vports | | | | | | fdb_ht | | +---+---------------+ | | | +---v---------------+ +------+ mlx5_esw_bridge | | | +-------------------------+ vports | | | | | | fdb_ht +------------------------------------------+ | +-------------------+ | | | | | | +----------------------+ +---------------------------+ | +-> mlx5_esw_bridge_port | +--> mlx5_esw_bridge_fdb_entry <-+ | | | +----------------------+ | +--+------------------------+ | | | vlans +--+-> mlx5_esw_bridge_vlan | | | | | | | | | | | +--v------------------------+ | | +----------------------+ | | fdb_list +--+ | mlx5_esw_bridge_fdb_entry <-+ | | +-------^--------------+ +--+------------------------+ | | +----------------------+ | | | | +-> mlx5_esw_bridge_port | | +-----------------------+ | | | | | | vlans | | -----------------------+ | | | +-> mlx5_esw_bridge_vlan | | +----------------------+ | | +---------------------------+ | | fdb_list +-----> mlx5_esw_bridge_fdb_entry <-+ +-------^--------------+ +--+------------------------+ | | +-----------------------+ HARDWARE REPRESENTATION In order to adhere to kernel software datapath model bridge offloads must come after TC and NF FDBs. However, since netfilter offload in mlx5 is implemented with unmanaged tables, its miss path is not automatically connected to next priority and requires the code to manually connect with slow table. To keep bridge offloads encapsulated and not mix it with eswitch offloads new FDB_TC_MISS priority is created between FDB_FT_OFFLOAD and FDB_SLOW_PATH which allows bridge offloads to be created without exposing its internal tables to any other modules since miss path of managed TC-miss table is automatically wired to next priority. The bridge tables are created with new priority FDB_BR_OFFLOAD in FDB namespace. The new priority is between tc-miss and slow path priorities. Priority consist of two levels: the ingress table that is global per eswitch and matches incoming packets by src_mac/vid and redirects them to next level (egress table) that is chosen according to ingress port bridge membership and matches on dst_mac/vid in order to redirect packet to vport according to the following diagram: + | +---------v----------+ | | | FDB_TC_OFFLOAD | | | +---------+----------+ | | +---------v----------+ | | | FDB_FT_OFFLOAD | | | +---------+----------+ | | +---------v----------+ | | | FDB_TC_MISS | | | +---------+----------+ | +--------------------------------------+ | | | | +------+ | | | | | +------v--------+ FDB_BR_OFFLOAD | | | INGRESS_TABLE | | | +------+---+----+ | | | | match | | | +---------+ | | | | | +-------+ | | +-------v-------+ match | | | | | | EGRESS_TABLE +------------> vport | | | +-------+-------+ | | | | | | | +-------+ | | miss | | | +------+------+ | | | | +--------------------------------------+ | | +---------v----------+ | | | FDB_SLOW_PATH | | | +---------+----------+ | v PATCHES OVERVIEW 1-3 - Miscellaneous refactorings and infrastructure changes. 4 - Mlx5 bridge offload infrastructure and dedicated fs_core namespace/tables implementation. 5 - FDB entry offload. 6 - Dynamic FDB entry aging. 7-10 - VLAN filtering offload. 11 - Tracepoints for main mlx5 bridge offload events (FDB entry offload/unoffload, VLAN add/delete, etc.) ==================== Signed-off-by: David S. Miller <[email protected]> --
2021-06-10net: davinci_emac: Use devm_platform_get_and_ioremap_resource()Yang Yingliang1-3/+2
Use devm_platform_get_and_ioremap_resource() to simplify code and avoid a null-ptr-deref by checking 'res' in it. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-10net: ethernet: ti: cpsw: Use devm_platform_get_and_ioremap_resource()Yang Yingliang2-4/+2
Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-10Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds3-0/+10
Pull rdma fixes from Jason Gunthorpe: "A mixture of small bug fixes and a small security issue: - WARN_ON when IPoIB is automatically moved between namespaces - Long standing bug where mlx5 would use the wrong page for the doorbell recovery memory if fork is used - Security fix for mlx4 that disables the timestamp feature - Several crashers for mlx5 - Plug a recent mlx5 memory leak for the sig_mr" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/mlx5: Fix initializing CQ fragments buffer RDMA/mlx5: Delete right entry from MR signature database RDMA: Verify port when creating flow rule RDMA/mlx5: Block FDB rules when not in switchdev mode RDMA/mlx4: Do not map the core_clock page to user space unless enabled RDMA/mlx5: Use different doorbell memory for different processes RDMA/ipoib: Fix warning caused by destroying non-initial netns
2021-06-09net/mlx5: Bridge, add tracepointsVlad Buslov3-50/+191
Move private bridge structures to dedicated headers that is accessible to bridge tracepoint header. Implemented following tracepoints: - Initialize FDB entry. - Refresh FDB entry. - Cleanup FDB entry. - Create VLAN. - Cleanup VLAN. - Attach port to bridge. - Detach port from bridge. Usage example: ># cd /sys/kernel/debug/tracing ># echo mlx5:mlx5_esw_bridge_fdb_entry_init >> set_event ># cat trace ... kworker/u20:1-96 [001] .... 231.892503: mlx5_esw_bridge_fdb_entry_init: net_device=enp8s0f0_0 addr=e4:fd:05:08:00:02 vid=3 flags=0 lastuse=4294895695 Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, filter tagged packets that didn't match tagged fgVlad Buslov3-5/+141
With support for pvid vlans in mlx5 bridge it is possible to have rules in untagged flow group when vlan filtering is enabled. However, such rules can also match tagged packets that didn't match anything in tagged flow group. Filter such packets by introducing additional flow group between tagged and untagged groups. When filtering is enabled on the bridge create additional flow in vlan filtering flow group and matches tagged packets with specified source MAC address and redirects them to new "skip" table. The skip table is new lowest-level empty table that is used to skip all further processing on packet in bridge priority. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, support pvid and untagged vlan configurationsVlad Buslov1-16/+159
Implement support for pushing vlan header into untagged packet on ingress of port that has pvid configured and support for popping vlan on egress of port that has the matching vlan configured as untagged. To support such configurations packet reformat contexts of {INSERT|REMOVE}_HEADER types are created per such vlan and saved to struct mlx5_esw_bridge_vlan which allows all FDB entries on particular vlan to share single packet reformat instance. When initializing FDB entries with pvid or untagged vlan type set its mlx5_flow_act->pkt_reformat action accordingly. Flush all flows when removing vlan from port. This is necessary because even though software bridge removes all FDB entries before removing their vlan, mlx5 bridge implementation deletes their corresponding flow entries from hardware in asynchronous workqueue task, which will cause firmware error if vlan packet reformat context is deleted before all flows that point to it. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, match FDB entry vlan tagVlad Buslov2-10/+172
Add support for FDB vlan-tagged entries. Extend ingress and egress flow tables with flow groups to match packet vlan tag. Modify the flow creation code to include vlan tag, if vlan is configured on port and vlan configuration is supported for offload. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, implement infrastructure for vlansVlad Buslov3-3/+286
Establish all the necessary infrastructure for implementing vlan matching and vlan push/pop in following patches: - Add new per-vport struct mlx5_esw_bridge_port that is used to store metadata for all port vlans. Initialize and cleanup the instance of the structure when port representor is linked/unliked to bridge. Use xarray to allow quick vport metadata lookup by vport number. - Add new per-port-vlan struct mlx5_esw_bridge_vlan that is used to store vlan-specific data (vid, flags). Handle SWITCHDEV_PORT_OBJ_{ADD|DEL} switchdev blocking event for SWITCHDEV_OBJ_ID_PORT_VLAN object by creating/deleting the vlan structure and saving it in per-vport xarray for quick lookup. - Implement support for SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING object attribute that is used to toggle vlan filtering. Remove all FDB entries from hardware when vlan filtering state is changed. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, dynamic entry ageingVlad Buslov3-13/+193
Dynamic FDB entries require capability to age out unused entries. Such entries are either aged out by kernel software bridge implementation or by hardware switch that offloaded them (and notified the kernel to mark them as SWITCHDEV_FDB_ADD_TO_BRIDGE). Leaving ageing to kernel bridge would result it deleting offloaded dynamic FDB entries every ageing_time period due to packets being processed by hardware and, consecutively, 'used' timestamp for FDB entry not being updated. However, since hardware doesn't support ageing, software solution inside the driver is required. In order to emulate hardware ageing in driver, extend bridge FDB ingress flows with counter and create delayed br_offloads->update_work task on bridge offloads workqueue. Run the task every second, update 'used' timestamp in software bridge dynamic entry by sending SWITCHDEV_FDB_ADD_TO_BRIDGE for the entry, if it flow hardware counter lastuse field was changed since last update. If lastuse wasn't changed for ageing_time period, then delete the FDB entry and notify kernel bridge by sending SWITCHDEV_FDB_DEL_TO_BRIDGE notification. Register blocking switchdev notifier callback and handle attribute set SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME event to allow user to dynamically configure bridge FDB entry ageing timeout. Save the value per-bridge in struct mlx5_esw_bridge. Silently ignore SWITCHDEV_ATTR_ID_PORT_{PRE_}BRIDGE_FLAGS switchdev event since mlx5 bridge implementation relies on software bridge for implementing necessary behavior for all of these flags. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, handle FDB eventsVlad Buslov3-4/+409
Hardware supported by mlx5 driver doesn't provide learning and requires the driver to emulate all switch-like behavior in software. As such, all packets by default go through miss path, appear on representor and get to software bridge, if it is the upper device of the representor. This causes bridge to process packet in software, learn the MAC address to FDB and send SWITCHDEV_FDB_ADD_TO_DEVICE event to all subscribers. In order to offload FDB entries in mlx5, register switchdev notifier callback and implement support for both 'added_by_user' and dynamic FDB entry SWITCHDEV_FDB_ADD_TO_DEVICE events asynchronously using new mlx5_esw_bridge_offloads->wq ordered workqueue. In workqueue callback offload the ingress rule (matching FDB entry MAC as packet source MAC) and egress table rule (matching FDB entry MAC as destination MAC). For ingress table rule also match source vport to ensure that only traffic coming from expected bridge port is matched by offloaded rule. Save all the relevant FDB entry data in struct mlx5_esw_bridge_fdb_entry instance and insert the instance in new mlx5_esw_bridge->fdb_list list (for traversing all entries by software ageing implementation in following patch) and in new mlx5_esw_bridge->fdb_ht hash table for fast retrieval. Notify the bridge that FDB entry has been offloaded by sending SWITCHDEV_FDB_OFFLOADED notification. Delete FDB entry on reception of SWITCHDEV_FDB_DEL_TO_DEVICE event. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Bridge, add offload infrastructureVlad Buslov9-0/+539
Create new files bridge.{c|h} in en/rep directory that implement bridge interaction with representor netdevices and handle required events/notifications, bridge.{c|h} in esw directory that implement all necessary eswitch offloading infrastructure and works on vport/eswitch level. Provide new kconfig MLX5_BRIDGE which is automatically selected when both kernel bridge and mlx5 eswitch configs are enabled. Provide basic infrastructure for bridge offloads: - struct mlx5_esw_bridge_offloads - per-eswitch bridge offload structure that encapsulates generic bridge-offloads data (notifier blocks, ingress flow table/group, etc.) that is created/deleted on enable/disable eswitch offloads. - struct mlx5_esw_bridge - per-bridge structure that encapsulates per-bridge data (reference counter, FDB, egress flow table/group, etc.) that is created when first eswitch represetor is attached to new bridge and deleted when last representor is removed from the bridge as a result of NETDEV_CHANGEUPPER event. The bridge tables are created with new priority FDB_BR_OFFLOAD in FDB namespace. The new priority is between tc-miss and slow path priorities. Priority consist of two levels: the ingress table that is global per eswitch and matches incoming packets by src_mac/vid and redirects them to next level (egress table) that is chosen according to ingress port bridge membership and matches on dst_mac/vid in order to redirect packet to vport according to the following diagram: + | +---------v----------+ | | | FDB_TC_OFFLOAD | | | +---------+----------+ | | +---------v----------+ | | | FDB_FT_OFFLOAD | | | +---------+----------+ | | +---------v----------+ | | | FDB_TC_MISS | | | +---------+----------+ | +--------------------------------------+ | | | | +------+ | | | | | +------v--------+ FDB_BR_OFFLOAD | | | INGRESS_TABLE | | | +------+---+----+ | | | | match | | | +---------+ | | | | | +-------+ | | +-------v-------+ match | | | | | | EGRESS_TABLE +------------> vport | | | +-------+-------+ | | | | | | | +-------+ | | miss | | | +------+------+ | | | | +--------------------------------------+ | | +---------v----------+ | | | FDB_SLOW_PATH | | | +---------+----------+ | v Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Refactor mlx5e_eswitch_{*}rep() helpersVlad Buslov2-5/+5
Change the helper to functions to accept constant pointer to struct net_device. This is necessary for following patches in series that pass mlx5e_eswitch_rep() as a callback to kernel bridge infrastructure code. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Create TC-miss priority and tableVlad Buslov3-1/+25
In order to adhere to kernel software datapath model bridge offloads must come after TC and NF FDBs. Following patches in this series add new FDB priority for bridge after FDB_FT_OFFLOAD. However, since netfilter offload is implemented with unmanaged tables, its miss path is not automatically connected to next priority and requires the code to manually connect with slow table. To keep bridge offloads encapsulated and not mix it with eswitch offloads, create a new FDB_TC_MISS priority between FDB_FT_OFFLOAD and FDB_SLOW_PATH: + | +---------v----------+ | | | FDB_TC_OFFLOAD | | | +---------+----------+ | | | +---------v----------+ | | | FDB_FT_OFFLOAD | | | +---------+----------+ | | | +---------v----------+ | | | FDB_TC_MISS | | | +---------+----------+ | | | +---------v----------+ | | | FDB_SLOW_PATH | | | +---------+----------+ | v Initialize the new priority with single default empty managed table and use the table as TC/NF miss patch instead of slow table. This approach allows bridge offloads to be created as new FDB namespace priority between FDB_TC_MISS and FDB_SLOW_PATH without exposing its internal tables to any other modules since miss path of managed TC-miss table is automatically wired to next priority. Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: DR, Support EMD tag in modify header for STEv1Yevgeny Kliteynik1-0/+8
Add support for EMD tag in modify header set/copy actions on device that supports STEv1. Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: DR, Added support for INSERT_HEADER reformat typeYevgeny Kliteynik7-26/+150
Add support for INSERT_HEADER packet reformat context type Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Added new parameters to reformat contextYevgeny Kliteynik8-48/+70
Adding new reformat context type (INSERT_HEADER) requires adding two new parameters to reformat context - reformat_param_0 and reformat_param_1. As defined by HW spec, these parameters have different meaning for different reformat context type. The first parameter (reformat_param_0) is not new to HW spec, but it wasn't used by any of the supported reformats. The second parameter (reformat_param_1) is new to the HW spec - it was added to allow supporting INSERT_HEADER. For NSERT_HEADER, reformat_param_0 indicates the header used to reference the location of the inserted header, and reformat_param_1 indicates the offset of the inserted header from the reference point defined by reformat_param_0. Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: DR, Allow encap action for RX for supporting devicesYevgeny Kliteynik5-14/+93
Encap actions on RX flow were not supported on older devices. However, this is no longer the case in devices that support STEv1. This patch adds support for encap l3/l2 on RX flow for supported devices: update actions state machine by adding the newely supported transitions and add the required support in STEv0/1 files. The new transitions that are supported are: - from decap/modify-header/pop-vlan to encap - from encap to termination table Signed-off-by: Erez Shitrit <[email protected]> Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: DR, Split reformat state to Encap and DecapYevgeny Kliteynik1-34/+35
Split single reformat state into two separate states for encap and decap. This will allow adding actions to the specific domain, such as encap on RX. Signed-off-by: Erez Shitrit <[email protected]> Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: mlx5_ifc support for header insert/removeYevgeny Kliteynik1-0/+6
Add support for HCA caps 2 that contains capabilities for the new insert/remove header actions. Added the required definitions for supporting the new reformat type: added packet reformat parameters, reformat anchors and definitions to allow copy/set into the inserted EMD (Embedded MetaData) tag. Signed-off-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Jianbo Liu <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Block offload of outer header csum for GRE tunnelAya Levin1-6/+3
The device is able to offload either the outer header csum or inner header csum. The driver utilizes the inner csum offload. So, prohibit setting of tx-gre-csum-segmentation and let it be: off[fixed]. Fixes: 2729984149e6 ("net/mlx5e: Support TSO and TX checksum offloads for GRE tunnels") Signed-off-by: Aya Levin <[email protected]> Reviewed-by: Tariq Toukan <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Block offload of outer header csum for UDP tunnelsAya Levin1-7/+3
The device is able to offload either the outer header csum or inner header csum. The driver utilizes the inner csum offload. Hence, block setting of tx-udp_tnl-csum-segmentation and set it to off[fixed]. Fixes: b49663c8fb49 ("net/mlx5e: Add support for UDP tunnel segmentation with outer checksum offload") Signed-off-by: Aya Levin <[email protected]> Reviewed-by: Tariq Toukan <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09Revert "net/mlx5: Arm only EQs with EQEs"Shay Drory1-2/+4
In the scenario described below, an EQ can remain in FIRED state which can result in missing an interrupt generation. The scenario: device mlx5_core driver ------ ---------------- EQ1.eqe generated EQ1.MSI-X sent EQ1.state = FIRED EQ2.eqe generated mlx5_irq() polls - eq1_eqes() arm eq1 polls - eq2_eqes() arm eq2 EQ2.MSI-X sent EQ2.state = FIRED mlx5_irq() polls - eq2_eqes() -- no eqes found driver skips EQ arming; ->EQ2 remains fired, misses generating interrupt. Hence, always arm the EQ by reverting the cited commit in fixes tag. Fixes: d894892dda25 ("net/mlx5: Arm only EQs with EQEs") Signed-off-by: Shay Drory <[email protected]> Reviewed-by: Parav Pandit <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Fix select queue to consider SKBTX_HW_TSTAMPAya Levin3-23/+25
Steering packets to PTP-SQ should be done only if the SKB has SKBTX_HW_TSTAMP set in the tx_flags. While here, take the function into a header and inline it. Set the whole condition to select the PTP-SQ to unlikely. Fixes: 24c22dd0918b ("net/mlx5e: Add states to PTP channel") Signed-off-by: Aya Levin <[email protected]> Reviewed-by: Tariq Toukan <[email protected]> Reviewed-by: Maxim Mikityanskiy <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Don't update netdev RQs with PTP-RQAya Levin1-2/+0
Since the driver opens the PTP-RQ under channel 0, it appears to the stack as if the SKB was received on rxq0. So from thew stack POV there are still the same number of RX queues. Fixes: 960fbfe222a4 ("net/mlx5e: Allow coexistence of CQE compression and HW TS PTP") Signed-off-by: Aya Levin <[email protected]> Reviewed-by: Tariq Toukan <[email protected]> Reviewed-by: Maxim Mikityanskiy <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Verify dev is present in get devlink port ndoChris Mi1-0/+2
When changing eswitch mode, the netdev is detached from the hardware resources. So verify dev is present in get devlink port ndo. Otherwise, we will hit the following panic: [241535.973539] RIP: 0010:__devlink_port_phys_port_name_get+0x13/0x1b0 [241535.976471] RSP: 0018:ffff9eaf0ae1b7c8 EFLAGS: 00010292 [241535.977471] RAX: 000000000002d370 RBX: 000000000002d370 RCX: 0000000000000000 [241535.978479] RDX: 0000000000000010 RSI: ffff9eaf0ae1b858 RDI: 000000000002d370 [241535.979482] RBP: ffff9eaf0ae1b7e0 R08: 000000000000002a R09: ffff8888d54d13da [241535.980486] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8888e6700000 [241535.981491] R13: ffff9eaf0ae1b858 R14: 0000000000000010 R15: 0000000000000000 [241535.982489] FS: 00007fd374ef3740(0000) GS:ffff88909ea00000(0000) knlGS:0000000000000000 [241535.983494] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [241535.984487] CR2: 000000000002d444 CR3: 000000089fd26006 CR4: 00000000003706e0 [241535.985502] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [241535.986499] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [241535.987477] Call Trace: [241535.988426] ? nla_put_64bit+0x71/0xa0 [241535.989368] devlink_compat_phys_port_name_get+0x50/0xa0 [241535.990312] dev_get_phys_port_name+0x4b/0x60 [241535.991252] rtnl_fill_ifinfo+0x57b/0xcb0 [241535.992192] rtnl_dump_ifinfo+0x58f/0x6d0 [241535.993123] ? ksize+0x14/0x20 [241535.994033] ? __alloc_skb+0xe8/0x250 [241535.994935] netlink_dump+0x17c/0x300 [241535.995821] netlink_recvmsg+0x1de/0x2c0 [241535.996677] sock_recvmsg+0x70/0x80 [241535.997518] ____sys_recvmsg+0x9b/0x1b0 [241535.998360] ? iovec_from_user+0x82/0x120 [241535.999202] ? __import_iovec+0x2c/0x130 [241536.000031] ___sys_recvmsg+0x94/0x130 [241536.000850] ? __handle_mm_fault+0x56d/0x6e0 [241536.001668] __sys_recvmsg+0x5f/0xb0 [241536.002464] ? syscall_enter_from_user_mode+0x2b/0x80 [241536.003242] __x64_sys_recvmsg+0x1f/0x30 [241536.004008] do_syscall_64+0x38/0x50 [241536.004767] entry_SYSCALL_64_after_hwframe+0x44/0xae [241536.005532] RIP: 0033:0x7fd375014f47 Fixes: 2ff349c5edfe ("net/mlx5e: Verify dev is present in some ndos") Signed-off-by: Roi Dayan <[email protected]> Signed-off-by: Chris Mi <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: DR, Don't use SW steering when RoCE is not supportedMaor Gottlieb1-4/+5
SW steering uses RC QP to write/read to/from ICM, hence it's not supported when RoCE is not supported as well. Fixes: 70605ea545e8 ("net/mlx5: DR, Expose APIs for direct rule managing") Signed-off-by: Maor Gottlieb <[email protected]> Reviewed-by: Alex Vesker <[email protected]> Reviewed-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5: Consider RoCE cap before init RDMA resourcesMaor Gottlieb1-0/+3
Check if RoCE is supported by the device before enable it in the vport context and create all the RDMA steering objects. Fixes: 80f09dfc237f ("net/mlx5: Eswitch, enable RoCE loopback traffic") Signed-off-by: Maor Gottlieb <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Fix page reclaim for dead peer hairpinDima Chumak2-7/+25
When adding a hairpin flow, a firmware-side send queue is created for the peer net device, which claims some host memory pages for its internal ring buffer. If the peer net device is removed/unbound before the hairpin flow is deleted, then the send queue is not destroyed which leads to a stack trace on pci device remove: [ 748.005230] mlx5_core 0000:08:00.2: wait_func:1094:(pid 12985): MANAGE_PAGES(0x108) timeout. Will cause a leak of a command resource [ 748.005231] mlx5_core 0000:08:00.2: reclaim_pages:514:(pid 12985): failed reclaiming pages: err -110 [ 748.001835] mlx5_core 0000:08:00.2: mlx5_reclaim_root_pages:653:(pid 12985): failed reclaiming pages (-110) for func id 0x0 [ 748.002171] ------------[ cut here ]------------ [ 748.001177] FW pages counter is 4 after reclaiming all pages [ 748.001186] WARNING: CPU: 1 PID: 12985 at drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c:685 mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core] [ +0.002771] Modules linked in: cls_flower mlx5_ib mlx5_core ptp pps_core act_mirred sch_ingress openvswitch nsh xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_umad ib_ipoib iw_cm ib_cm ib_uverbs ib_core overlay fuse [last unloaded: pps_core] [ 748.007225] CPU: 1 PID: 12985 Comm: tee Not tainted 5.12.0+ #1 [ 748.001376] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 748.002315] RIP: 0010:mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core] [ 748.001679] Code: 28 00 00 00 0f 85 22 01 00 00 48 81 c4 b0 00 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 40 cc 19 a1 e8 9f 71 0e e2 <0f> 0b e9 30 ff ff ff 48 c7 c7 a0 cc 19 a1 e8 8c 71 0e e2 0f 0b e9 [ 748.003781] RSP: 0018:ffff88815220faf8 EFLAGS: 00010286 [ 748.001149] RAX: 0000000000000000 RBX: ffff8881b4900280 RCX: 0000000000000000 [ 748.001445] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffffed102a441f51 [ 748.001614] RBP: 00000000000032b9 R08: 0000000000000001 R09: ffffed1054a15ee8 [ 748.001446] R10: ffff8882a50af73b R11: ffffed1054a15ee7 R12: fffffbfff07c1e30 [ 748.001447] R13: dffffc0000000000 R14: ffff8881b492cba8 R15: 0000000000000000 [ 748.001429] FS: 00007f58bd08b580(0000) GS:ffff8882a5080000(0000) knlGS:0000000000000000 [ 748.001695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 748.001309] CR2: 000055a026351740 CR3: 00000001d3b48006 CR4: 0000000000370ea0 [ 748.001506] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 748.001483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 748.001654] Call Trace: [ 748.000576] ? mlx5_satisfy_startup_pages+0x290/0x290 [mlx5_core] [ 748.001416] ? mlx5_cmd_teardown_hca+0xa2/0xd0 [mlx5_core] [ 748.001354] ? mlx5_cmd_init_hca+0x280/0x280 [mlx5_core] [ 748.001203] mlx5_function_teardown+0x30/0x60 [mlx5_core] [ 748.001275] mlx5_uninit_one+0xa7/0xc0 [mlx5_core] [ 748.001200] remove_one+0x5f/0xc0 [mlx5_core] [ 748.001075] pci_device_remove+0x9f/0x1d0 [ 748.000833] device_release_driver_internal+0x1e0/0x490 [ 748.001207] unbind_store+0x19f/0x200 [ 748.000942] ? sysfs_file_ops+0x170/0x170 [ 748.001000] kernfs_fop_write_iter+0x2bc/0x450 [ 748.000970] new_sync_write+0x373/0x610 [ 748.001124] ? new_sync_read+0x600/0x600 [ 748.001057] ? lock_acquire+0x4d6/0x700 [ 748.000908] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 748.001126] ? fd_install+0x1c9/0x4d0 [ 748.000951] vfs_write+0x4d0/0x800 [ 748.000804] ksys_write+0xf9/0x1d0 [ 748.000868] ? __x64_sys_read+0xb0/0xb0 [ 748.000811] ? filp_open+0x50/0x50 [ 748.000919] ? syscall_enter_from_user_mode+0x1d/0x50 [ 748.001223] do_syscall_64+0x3f/0x80 [ 748.000892] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 748.001026] RIP: 0033:0x7f58bcfb22f7 [ 748.000944] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 [ 748.003925] RSP: 002b:00007fffd7f2aaa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 748.001732] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f58bcfb22f7 [ 748.001426] RDX: 000000000000000d RSI: 00007fffd7f2abc0 RDI: 0000000000000003 [ 748.001746] RBP: 00007fffd7f2abc0 R08: 0000000000000000 R09: 0000000000000001 [ 748.001631] R10: 00000000000001b6 R11: 0000000000000246 R12: 000000000000000d [ 748.001537] R13: 00005597ac2c24a0 R14: 000000000000000d R15: 00007f58bd084700 [ 748.001564] irq event stamp: 0 [ 748.000787] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 748.001399] hardirqs last disabled at (0): [<ffffffff813132cf>] copy_process+0x146f/0x5eb0 [ 748.001854] softirqs last enabled at (0): [<ffffffff8131330e>] copy_process+0x14ae/0x5eb0 [ 748.013431] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 748.001492] ---[ end trace a6fabd773d1c51ae ]--- Fix by destroying the send queue of a hairpin peer net device that is being removed/unbound, which returns the allocated ring buffer pages to the host. Fixes: 4d8fcf216c90 ("net/mlx5e: Avoid unbounded peer devices when unpairing TC hairpin rules") Signed-off-by: Dima Chumak <[email protected]> Reviewed-by: Roi Dayan <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Remove dependency in IPsec initialization flowsHuy Nguyen1-3/+0
Currently, IPsec feature is disabled because mlx5e_build_nic_netdev is required to be called after mlx5e_ipsec_init. This requirement is invalid as mlx5e_build_nic_netdev and mlx5e_ipsec_init initialize independent resources. Remove ipsec pointer check in mlx5e_build_nic_netdev so that the two functions can be called at any order. Fixes: 547eede070eb ("net/mlx5e: IPSec, Innova IPSec offload infrastructure") Signed-off-by: Huy Nguyen <[email protected]> Reviewed-by: Raed Salem <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Fix use-after-free of encap entry in neigh update handlerVlad Buslov4-17/+40
Function mlx5e_rep_neigh_update() wasn't updated to accommodate rtnl lock removal from TC filter update path and properly handle concurrent encap entry insertion/deletion which can lead to following use-after-free: [23827.464923] ================================================================== [23827.469446] BUG: KASAN: use-after-free in mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.470971] Read of size 4 at addr ffff8881d132228c by task kworker/u20:6/21635 [23827.472251] [23827.472615] CPU: 9 PID: 21635 Comm: kworker/u20:6 Not tainted 5.13.0-rc3+ #5 [23827.473788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [23827.475639] Workqueue: mlx5e mlx5e_rep_neigh_update [mlx5_core] [23827.476731] Call Trace: [23827.477260] dump_stack+0xbb/0x107 [23827.477906] print_address_description.constprop.0+0x18/0x140 [23827.478896] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.479879] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.480905] kasan_report.cold+0x7c/0xd8 [23827.481701] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.482744] kasan_check_range+0x145/0x1a0 [23827.493112] mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.494054] ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core] [23827.495296] mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core] [23827.496338] ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core] [23827.497486] ? read_word_at_a_time+0xe/0x20 [23827.498250] ? strscpy+0xa0/0x2a0 [23827.498889] process_one_work+0x8ac/0x14e0 [23827.499638] ? lockdep_hardirqs_on_prepare+0x400/0x400 [23827.500537] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [23827.501359] ? rwlock_bug.part.0+0x90/0x90 [23827.502116] worker_thread+0x53b/0x1220 [23827.502831] ? process_one_work+0x14e0/0x14e0 [23827.503627] kthread+0x328/0x3f0 [23827.504254] ? _raw_spin_unlock_irq+0x24/0x40 [23827.505065] ? __kthread_bind_mask+0x90/0x90 [23827.505912] ret_from_fork+0x1f/0x30 [23827.506621] [23827.506987] Allocated by task 28248: [23827.507694] kasan_save_stack+0x1b/0x40 [23827.508476] __kasan_kmalloc+0x7c/0x90 [23827.509197] mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core] [23827.510194] mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core] [23827.511218] __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core] [23827.512234] mlx5e_configure_flower+0x191c/0x4870 [mlx5_core] [23827.513298] tc_setup_cb_add+0x1d5/0x420 [23827.514023] fl_hw_replace_filter+0x382/0x6a0 [cls_flower] [23827.514975] fl_change+0x2ceb/0x4a51 [cls_flower] [23827.515821] tc_new_tfilter+0x89a/0x2070 [23827.516548] rtnetlink_rcv_msg+0x644/0x8c0 [23827.517300] netlink_rcv_skb+0x11d/0x340 [23827.518021] netlink_unicast+0x42b/0x700 [23827.518742] netlink_sendmsg+0x743/0xc20 [23827.519467] sock_sendmsg+0xb2/0xe0 [23827.520131] ____sys_sendmsg+0x590/0x770 [23827.520851] ___sys_sendmsg+0xd8/0x160 [23827.521552] __sys_sendmsg+0xb7/0x140 [23827.522238] do_syscall_64+0x3a/0x70 [23827.522907] entry_SYSCALL_64_after_hwframe+0x44/0xae [23827.523797] [23827.524163] Freed by task 25948: [23827.524780] kasan_save_stack+0x1b/0x40 [23827.525488] kasan_set_track+0x1c/0x30 [23827.526187] kasan_set_free_info+0x20/0x30 [23827.526968] __kasan_slab_free+0xed/0x130 [23827.527709] slab_free_freelist_hook+0xcf/0x1d0 [23827.528528] kmem_cache_free_bulk+0x33a/0x6e0 [23827.529317] kfree_rcu_work+0x55f/0xb70 [23827.530024] process_one_work+0x8ac/0x14e0 [23827.530770] worker_thread+0x53b/0x1220 [23827.531480] kthread+0x328/0x3f0 [23827.532114] ret_from_fork+0x1f/0x30 [23827.532785] [23827.533147] Last potentially related work creation: [23827.534007] kasan_save_stack+0x1b/0x40 [23827.534710] kasan_record_aux_stack+0xab/0xc0 [23827.535492] kvfree_call_rcu+0x31/0x7b0 [23827.536206] mlx5e_tc_del_fdb_flow+0x577/0xef0 [mlx5_core] [23827.537305] mlx5e_flow_put+0x49/0x80 [mlx5_core] [23827.538290] mlx5e_delete_flower+0x6d1/0xe60 [mlx5_core] [23827.539300] tc_setup_cb_destroy+0x18e/0x2f0 [23827.540144] fl_hw_destroy_filter+0x1d2/0x310 [cls_flower] [23827.541148] __fl_delete+0x4dc/0x660 [cls_flower] [23827.541985] fl_delete+0x97/0x160 [cls_flower] [23827.542782] tc_del_tfilter+0x7ab/0x13d0 [23827.543503] rtnetlink_rcv_msg+0x644/0x8c0 [23827.544257] netlink_rcv_skb+0x11d/0x340 [23827.544981] netlink_unicast+0x42b/0x700 [23827.545700] netlink_sendmsg+0x743/0xc20 [23827.546424] sock_sendmsg+0xb2/0xe0 [23827.547084] ____sys_sendmsg+0x590/0x770 [23827.547850] ___sys_sendmsg+0xd8/0x160 [23827.548606] __sys_sendmsg+0xb7/0x140 [23827.549303] do_syscall_64+0x3a/0x70 [23827.549969] entry_SYSCALL_64_after_hwframe+0x44/0xae [23827.550853] [23827.551217] The buggy address belongs to the object at ffff8881d1322200 [23827.551217] which belongs to the cache kmalloc-256 of size 256 [23827.553341] The buggy address is located 140 bytes inside of [23827.553341] 256-byte region [ffff8881d1322200, ffff8881d1322300) [23827.555747] The buggy address belongs to the page: [23827.556847] page:00000000898762aa refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d1320 [23827.558651] head:00000000898762aa order:2 compound_mapcount:0 compound_pincount:0 [23827.559961] flags: 0x2ffff800010200(slab|head|node=0|zone=2|lastcpupid=0x1ffff) [23827.561243] raw: 002ffff800010200 dead000000000100 dead000000000122 ffff888100042b40 [23827.562653] raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 [23827.564112] page dumped because: kasan: bad access detected [23827.565439] [23827.565932] Memory state around the buggy address: [23827.566917] ffff8881d1322180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.568485] ffff8881d1322200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [23827.569818] >ffff8881d1322280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [23827.571143] ^ [23827.571879] ffff8881d1322300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.573283] ffff8881d1322380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.574654] ================================================================== Most of the necessary logic is already correctly implemented by mlx5e_get_next_valid_encap() helper that is used in neigh stats update handler. Make the handler generic by renaming it to mlx5e_get_next_matching_encap() and use callback to test whether flow is matching instead of hardcoded check for 'valid' flag value. Implement mlx5e_get_next_valid_encap() by calling mlx5e_get_next_matching_encap() with callback that tests encap MLX5_ENCAP_ENTRY_VALID flag. Implement new mlx5e_get_next_init_encap() helper by calling mlx5e_get_next_matching_encap() with callback that tests encap completion result to be non-error and use it in mlx5e_rep_neigh_update() to safely iterate over nhe->encap_list. Remove encap completion logic from mlx5e_rep_update_flows() since the encap entries passed to this function are already guaranteed to be properly initialized by similar code in mlx5e_get_next_init_encap(). Fixes: 2a1f1768fa17 ("net/mlx5e: Refactor neigh update for concurrent execution") Signed-off-by: Vlad Buslov <[email protected]> Reviewed-by: Roi Dayan <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09net/mlx5e: Fix an error code in mlx5e_arfs_create_tables()Yang Li1-1/+1
When the code execute 'if (!priv->fs.arfs->wq)', the value of err is 0. So, we use -ENOMEM to indicate that the function create_singlethread_workqueue() return NULL. Clean up smatch warning: drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c:373 mlx5e_arfs_create_tables() warn: missing error code 'err'. Reported-by: Abaci Robot <[email protected]> Fixes: f6755b80d693 ("net/mlx5e: Dynamic alloc arfs table for netdev when needed") Signed-off-by: Yang Li <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-06-09stmmac: prefetch right addressMatteo Croce1-1/+1
To support XDP, a headroom is prepended to the packet data. Consider this offset when doing a prefetch. Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers") Signed-off-by: Matteo Croce <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09mlxsw: thermal: Fix null dereference of NULL temperature parameterColin Ian King1-2/+2
The call to mlxsw_thermal_module_temp_and_thresholds_get passes a NULL pointer for the temperature and this can be dereferenced in this function if the mlxsw_reg_query call fails. The simplist fix is to pass the address of dummy temperature variable instead of a NULL pointer. Addresses-Coverity: ("Explicit null dereferenced") Fixes: 72a64c2fe9d8 ("mlxsw: thermal: Read module temperature thresholds using MTMP register") Signed-off-by: Colin Ian King <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: ethernet: rmnet: Always subtract MAP headerKristian Evensen1-2/+3
Commit e1d9a90a9bfd ("net: ethernet: rmnet: Support for ingress MAPv5 checksum offload") broke ingress handling for devices where RMNET_FLAGS_INGRESS_MAP_CKSUMV5 or RMNET_FLAGS_INGRESS_MAP_CKSUMV4 are not set. Unless either of these flags are set, the MAP header is not removed. This commit restores the original logic by ensuring that the MAP header is removed for all MAP packets. Fixes: e1d9a90a9bfd ("net: ethernet: rmnet: Support for ingress MAPv5 checksum offload") Signed-off-by: Kristian Evensen <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: ena: make symbol 'ena_alloc_map_page' staticWei Yongjun1-1/+2
The sparse tool complains as follows: drivers/net/ethernet/amazon/ena/ena_netdev.c:978:13: warning: symbol 'ena_alloc_map_page' was not declared. Should it be static? This symbol is not used outside of ena_netdev.c, so marks it static. Fixes: 947c54c395cb ("net: ena: Use dev_alloc() in RX buffer allocation") Reported-by: Hulk Robot <[email protected]> Signed-off-by: Wei Yongjun <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: stmmac: Fix missing { } around two statements in an if statementColin Ian King1-1/+2
There are missing { } around a block of code on an if statement. Fix this by adding them in. Addresses-Coverity: ("Nesting level does not match indentation") Fixes: 46682cb86a37 ("net: stmmac: enable Intel mGbE 2.5Gbps link speed") Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: ethernet: ti: cpsw-phy-sel: Use devm_platform_ioremap_resource_byname()Yang Yingliang1-3/+1
Use the devm_platform_ioremap_resource_byname() helper instead of calling platform_get_resource_byname() and devm_ioremap_resource() separately. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09mvpp2: prefetch pageMatteo Croce1-3/+7
Most of the time during the RX is caused by the compound_head() call done at the end of the RX loop: │ build_skb(): [...] │ static inline struct page *compound_head(struct page *page) │ { │ unsigned long head = READ_ONCE(page->compound_head); 65.23 │ ldr x2, [x1, #8] Prefetch the page struct as soon as possible, to speedup the RX path noticeabily by a ~3-4% packet rate in a drop test. │ build_skb(): [...] │ static inline struct page *compound_head(struct page *page) │ { │ unsigned long head = READ_ONCE(page->compound_head); 17.92 │ ldr x2, [x1, #8] Signed-off-by: Matteo Croce <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09mvpp2: prefetch right addressMatteo Croce1-2/+2
In the RX buffer, the received data starts after a headroom used to align the IP header and to allow prepending headers efficiently. The prefetch() should take this into account, and prefetch from the very start of the received data. We can see that ether_addr_equal_64bits(), which is the first function to access the data, drops from the top of the perf top output. prefetch(data): Overhead Shared Object Symbol 11.64% [kernel] [k] eth_type_trans prefetch(data + MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM): Overhead Shared Object Symbol 13.42% [kernel] [k] build_skb 10.35% [mvpp2] [k] mvpp2_rx 9.35% [kernel] [k] __netif_receive_skb_core 8.24% [kernel] [k] kmem_cache_free 7.97% [kernel] [k] dev_gro_receive 7.68% [kernel] [k] page_pool_put_page 7.32% [kernel] [k] kmem_cache_alloc 7.09% [mvpp2] [k] mvpp2_bm_pool_put 3.36% [kernel] [k] eth_type_trans Also, move the eth_type_trans() call a bit down, to give the RAM more time to prefetch the data. Signed-off-by: Matteo Croce <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: ethernet: ti: am65-cpts: Use devm_platform_ioremap_resource_byname()Yang Yingliang1-3/+1
Use the devm_platform_ioremap_resource_byname() helper instead of calling platform_get_resource_byname() and devm_ioremap_resource() separately. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: stmmac: Use devm_platform_ioremap_resource_byname()Yang Yingliang1-3/+1
Use the devm_platform_ioremap_resource_byname() helper instead of calling platform_get_resource_byname() and devm_ioremap_resource() separately. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: sgi: ioc3-eth: check return value after calling platform_get_resource()Yang Yingliang1-0/+4
It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: hns3: use list_move_tail instead of list_del/list_add_tail in hclge_main.cBaokun Li1-10/+5
Using list_move_tail() instead of list_del() + list_add_tail() in hclge_main.c. Reported-by: Hulk Robot <[email protected]> Signed-off-by: Baokun Li <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: hns3: use list_move_tail instead of list_del/list_add_tail in ↵Baokun Li1-6/+3
hclgevf_main.c Using list_move_tail() instead of list_del() + list_add_tail() in hclgevf_main.c. Reported-by: Hulk Robot <[email protected]> Signed-off-by: Baokun Li <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09nfp: use list_move instead of list_del/list_add in nfp_cppcore.cBaokun Li1-2/+1
Using list_move() instead of list_del() + list_add() in nfp_cppcore.c. Reported-by: Hulk Robot <[email protected]> Signed-off-by: Baokun Li <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-09net: ethernet: ravb: Use devm_platform_get_and_ioremap_resource()Yang Yingliang1-11/+4
Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <[email protected]> Reviewed-by: Sergei Shtylyov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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