- 16 Mar, 2022 2 commits
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Casper Andersson authored
Changes the handling of fdb entries to use Switchdev events, instead of the previous "sync_bridge" and "sync_port" which only run when adding or removing VLANs on the bridge. Signed-off-by:
Casper Andersson <casper.casan@gmail.com> Link: https://lore.kernel.org/r/20220314160918.4rfrrfgmbsf2pxl3@wse-c0155Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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David Ahern authored
The fundamental premise of VRF and l3mdev core code is binding a socket to a device (l3mdev or netdev with an L3 domain) to indicate L3 scope. Legacy code resets flowi_oif to the l3mdev losing any original port device binding. Ben (among others) has demonstrated use cases where the original port device binding is important and needs to be retained. This patch handles that by adding a new entry to the common flow struct that can indicate the l3mdev index for later rule and table matching avoiding the need to reset flowi_oif. In addition to allowing more use cases that require port device binds, this patch brings a few datapath simplications: 1. l3mdev_fib_rule_match is only called when walking fib rules and always after l3mdev_update_flow. That allows an optimization to bail early for non-VRF type uses cases when flowi_l3mdev is not set. Also, only that index needs to be checked for the FIB table id. 2. l3mdev_update_flow can be called with flowi_oif set to a l3mdev (e.g., VRF) device. By resetting flowi_oif only for this case the FLOWI_FLAG_SKIP_NH_OIF flag is not longer needed and can be removed, removing several checks in the datapath. The flowi_iif path can be simplified to only be called if the it is not loopback (loopback can not be assigned to an L3 domain) and the l3mdev index is not already set. 3. Avoid another device lookup in the output path when the fib lookup returns a reject failure. Note: 2 functional tests for local traffic with reject fib rules are updated to reflect the new direct failure at FIB lookup time for ping rather than the failure on packet path. The current code fails like this: HINT: Fails since address on vrf device is out of device scope COMMAND: ip netns exec ns-A ping -c1 -w1 -I eth1 172.16.3.1 ping: Warning: source address might be selected on device other than: eth1 PING 172.16.3.1 (172.16.3.1) from 172.16.3.1 eth1: 56(84) bytes of data. --- 172.16.3.1 ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms where the test now directly fails: HINT: Fails since address on vrf device is out of device scope COMMAND: ip netns exec ns-A ping -c1 -w1 -I eth1 172.16.3.1 ping: connect: No route to host Signed-off-by:David Ahern <dsahern@kernel.org> Tested-by:
Ben Greear <greearb@candelatech.com> Link: https://lore.kernel.org/r/20220314204551.16369-1-dsahern@kernel.orgSigned-off-by:
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- 15 Mar, 2022 21 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queueJakub Kicinski authored
Tony Nguyen says: ==================== 100GbE Intel Wired LAN Driver Updates 2022-03-14 Jacob Keller says: The ice_virtchnl_pf.c file has become a single place for a lot of virtualization functionality. This includes most of the virtchnl message handling, integration with kernel hooks like the .ndo operations, reset logic, and more. We are planning in the future to implement and support Scalable IOV in the ice driver. To do this, much (but not all) of the code in ice_virtchnl_pf.c will want to be reused. Rather than dump all of the Scalable IOV implementation into ice_virtchnl_pf.c it makes sense to house it in a separate file. But that still leaves all of the Single Root IOV code littered among more generic logic. The long term goal is to re-organize the code such that generic re-usable code is split into separate files. The ice_sriov.c file would end up containing all of the Single Root IOV implementation specific details, while ice_vf_lib.[ch] and ice_virtchnl.[ch] contain the generic pieces. As a first step, notice that ice_sriov.c currently does not contain much of the SR-IOV implementation. This is housed primarily in ice_virtchnl_pf.c The code in ice_sriov.c is really generic and relates to the VF mailbox, including mailbox overflow detection. Rename ice_sriov.c to ice_vf_mbx.c, and then rename ice_virtchnl_pf.c to ice_sriov.c A later series will finish the refactor by splitting ice_sriov.c into multiple files, moving the generic code into ice_vf_lib.c and ice_virtchnl.c To prepare for that series, perform some basic cleanup and other refactors that we've accumulated during this development cycle. This series builds on top of the recent hash table refactor work. * '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue: ice: use ice_is_vf_trusted helper function ice: log an error message when eswitch fails to configure ice: cleanup error logging for ice_ena_vfs ice: move ice_set_vf_port_vlan near other .ndo ops ice: refactor spoofchk control code in ice_sriov.c ice: rename ICE_MAX_VF_COUNT to avoid confusion ice: remove unused definitions from ice_sriov.h ice: convert vf->vc_ops to a const pointer ice: remove circular header dependencies on ice.h ice: rename ice_virtchnl_pf.c to ice_sriov.c ice: rename ice_sriov.c to ice_vf_mbx.c ==================== Link: https://lore.kernel.org/r/20220315011155.2166817-1-anthony.l.nguyen@intel.comSigned-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-nextJakub Kicinski authored
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next 1) Revert CHECKSUM_UNNECESSARY for UDP packet from conntrack. 2) Reject unsupported families when creating tables, from Phil Sutter. 3) GRE support for the flowtable, from Toshiaki Makita. 4) Add GRE offload support for act_ct, also from Toshiaki. 5) Update mlx5 driver to support for GRE flowtable offload, from Toshiaki Makita. 6) Oneliner to clean up incorrect indentation in nf_conntrack_bridge, from Jiapeng Chong. * git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: netfilter: bridge: clean up some inconsistent indenting net/mlx5: Support GRE conntrack offload act_ct: Support GRE offload netfilter: flowtable: Support GRE netfilter: nf_tables: Reject tables of unsupported family Revert "netfilter: conntrack: mark UDP zero checksum as CHECKSUM_UNNECESSARY" ==================== Link: https://lore.kernel.org/r/20220315091513.66544-1-pablo@netfilter.orgSigned-off-by:
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Vladimir Oltean authored
IEEE_8021QAZ_MAX_TCS is defined in include/uapi/linux/dcbnl.h, which is included by net/dcbnl.h. Then, linux/netdevice.h conditionally includes net/dcbnl.h if CONFIG_DCB is enabled. Therefore, when CONFIG_DCB is disabled, this indirect dependency is broken. There isn't a good reason to include net/dcbnl.h headers into the ocelot switch library which exports low-level hardware API, so replace IEEE_8021QAZ_MAX_TCS with OCELOT_NUM_TC which has the same value. Fixes: 978777d0 ("net: dsa: felix: configure default-prio and dscp priorities") Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20220315131215.273450-1-vladimir.oltean@nxp.comSigned-off-by:
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Dan Carpenter authored
The WARN_ON() macro takes a condition, not a warning message. Fixes: 0933bd04 ("net: sparx5: Add support for ptp clocks") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20220314140327.GB30883@kiliSigned-off-by:
Paolo Abeni <pabeni@redhat.com>
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Paolo Abeni authored
Petr Machata says: ==================== netdevsim: Support for L3 HW stats "L3 stats" is a suite of interface statistics aimed at reflecting traffic taking place in a HW device, on an object corresponding to some software netdevice. Support for this stats suite has been added recently, in commit ca0a53dc ("Merge branch 'net-hw-counters-for-soft-devices'"). In this patch set: - Patch #1 adds support for L3 stats to netdevsim. Real devices can have various conditions for when an L3 counter is available. To simulate this, netdevsim maintains a list of devices suitable for HW stats collection. Only when l3_stats is enabled on both a netdevice itself, and in netdevsim, will netdevsim contribute values to L3 stats. This enablement and disablement is done via debugfs: # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/enable_ifindex # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/disable_ifindex Besides this, there is a third toggle to mark a device for future failure: # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/fail_next_enable - This allows HW-independent testing of stats reporting and in-kernel APIs, as well as a test for enablement rollback, which is difficult to do otherwise. This netdevsim-specific selftest is added in patch #2. - Patch #3 adds another driver-specific selftest, namely a test aimed at checking mlxsw-induced stats monitoring events. ==================== Link: https://lore.kernel.org/r/cover.1647265833.git.petrm@nvidia.comSigned-off-by:
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Petr Machata authored
Add a test that verifies that UAPI notifications are emitted, as mlxsw installs and deinstalls HW counters for the L3 offload xstats. Signed-off-by:
Petr Machata <petrm@nvidia.com> Signed-off-by:
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Petr Machata authored
Add a test that verifies basic UAPI contracts, netdevsim operation, rollbacks after partial enablement in core, and UAPI notifications. Signed-off-by:
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Petr Machata authored
Add support for testing of HW stats support that was added recently, namely the L3 stats support. L3 stats are provided for devices for which the L3 stats have been turned on, and that were enabled for netdevsim through a debugfs toggle: # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/enable_ifindex For fully enabled netdevices, netdevsim counts 10pps of ingress traffic and 20pps of egress traffic. Similarly, L3 stats can be disabled for a given device, and netdevsim ceases pretending there is any HW traffic going on: # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/disable_ifindex Besides this, there is a third toggle to mark a device for future failure: # echo $ifindex > /sys/kernel/debug/netdevsim/$DEV/hwstats/l3/fail_next_enable A future request to enable L3 stats on such netdevice will be bounced by netdevsim: # ip -j l sh dev d | jq '.[].ifindex' 66 # echo 66 > /sys/kernel/debug/netdevsim/netdevsim10/hwstats/l3/enable_ifindex # echo 66 > /sys/kernel/debug/netdevsim/netdevsim10/hwstats/l3/fail_next_enable # ip stats set dev d l3_stats on Error: netdevsim: Stats enablement set to fail. Signed-off-by:Ido Schimmel <idosch@nvidia.com> Acked-by:
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Anders Roxell authored
When building driver CONFIG_MICREL_PHY the follow error shows up: aarch64-linux-gnu-ld: drivers/net/phy/micrel.o: in function `lan8814_ts_info': micrel.c:(.text+0x1764): undefined reference to `ptp_clock_index' micrel.c:(.text+0x1764): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ptp_clock_index' aarch64-linux-gnu-ld: drivers/net/phy/micrel.o: in function `lan8814_probe': micrel.c:(.text+0x4720): undefined reference to `ptp_clock_register' micrel.c:(.text+0x4720): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ptp_clock_register' Rework Kconfig for MICREL_PHY to depend on 'PTP_1588_CLOCK_OPTIONAL'. Arnd describes in a good way why its needed to add this depends in patch e5f31552 ("ethernet: fix PTP_1588_CLOCK dependencies"). Reported-by:
kernel test robot <lkp@intel.com> Fixes: ece19502 ("net: phy: micrel: 1588 support for LAN8814 phy") Signed-off-by:
Anders Roxell <anders.roxell@linaro.org> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20220314110254.12498-1-anders.roxell@linaro.orgSigned-off-by:
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Michael Walle authored
The Lantech 8330-262D-E module is 2500base-X capable, but it reports the nominal bitrate as 2500MBd instead of 3125MBd. Add a quirk for the module. The following in an EEPROM dump of such a SFP with the serial number redacted: 00: 03 04 07 00 00 00 01 20 40 0c 05 01 19 00 00 00 ???...? @????... 10: 1e 0f 00 00 4c 61 6e 74 65 63 68 20 20 20 20 20 ??..Lantech 20: 20 20 20 20 00 00 00 00 38 33 33 30 2d 32 36 32 ....8330-262 30: 44 2d 45 20 20 20 20 20 56 31 2e 30 03 52 00 cb D-E V1.0?R.? 40: 00 1a 00 00 46 43 XX XX XX XX XX XX XX XX XX XX .?..FCXXXXXXXXXX 50: 20 20 20 20 32 32 30 32 31 34 20 20 68 b0 01 98 220214 h??? 60: 45 58 54 52 45 4d 45 4c 59 20 43 4f 4d 50 41 54 EXTREMELY COMPAT 70: 49 42 4c 45 20 20 20 20 20 20 20 20 20 20 20 20 IBLE Signed-off-by:
Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20220312205014.4154907-1-michael@walle.ccSigned-off-by:
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Jacob Keller authored
The ice_vc_cfg_promiscuous_mode_msg function directly checks ICE_VIRTCHNL_VF_CAP_PRIVILEGE, instead of using the existing helper function ice_is_vf_trusted. Switch this to use the helper function so that all trusted checks are consistent. This aids in any potential future refactor by ensuring consistent code. Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
Konrad Jankowski <konrad0.jankowski@intel.com> Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com>
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Jacob Keller authored
When ice_eswitch_configure fails, print an error message to make it more obvious why VF initialization did not succeed. Signed-off-by:
Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by:
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Jacob Keller authored
The ice_ena_vfs function and some of its sub-functions like ice_set_per_vf_res use a "if (<function>) { <print error> ; <exit> }" flow. This flow discards specialized errors reported by the called function. This style is generally not preferred as it makes tracing error sources more difficult. It also means we cannot log the actual error received properly. Refactor several calls in the ice_ena_vfs function that do this to catch the error in the 'ret' variable. Report this in the messages, and then return the more precise error value. Doing this reveals that ice_set_per_vf_res returns -EINVAL or -EIO in places where -ENOSPC makes more sense. Fix these calls up to return the more appropriate value. Signed-off-by: -
Jacob Keller authored
The ice_set_vf_port_vlan function is located in ice_sriov.c very far away from the other .ndo operations that it is similar to. Move this so that its located near the other .ndo operation definitions. Signed-off-by:
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Jacob Keller authored
The API to control the VSI spoof checking for a VF VSI has three functions: enable, disable, and set. The set function takes the VSI and the VF and decides whether to call enable or disable based on the vf->spoofchk field. In some flows, vf->spoofchk is not yet set, such as the function used to control the setting for a VF. (vf->spoofchk is only updated after a success). Simplify this API by refactoring ice_vf_set_spoofchk_cfg to be "ice_vsi_apply_spoofchk" which takes the boolean and allows all callers to avoid having to determine whether to call enable or disable themselves. This matches the expected callers better, and will prevent the need to export more than one function when this code must be called from another file. Signed-off-by:
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Jacob Keller authored
The ICE_MAX_VF_COUNT field is defined in ice_sriov.h. This count is true for SR-IOV but will not be true for all VF implementations, such as when the ice driver supports Scalable IOV. Rename this definition to clearly indicate ICE_MAX_SRIOV_VFS. Signed-off-by:
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Jacob Keller authored
A few more macros exist in ice_sriov.h which are not used anywhere. These can be safely removed. Note that ICE_VIRTCHNL_VF_CAP_L2 capability is set but never checked anywhere in the driver. Thus it is also safe to remove. Signed-off-by:
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Jacob Keller authored
The vc_ops structure is used to allow different handlers for virtchnl commands when the driver is in representor mode. The current implementation uses a copy of the ops table in each VF, and modifies this copy dynamically. The usual practice in kernel code is to store the ops table in a constant structure and point to different versions. This has a number of advantages: 1. Reduced memory usage. Each VF merely points to the correct table, so they're able to re-use the same constant lookup table in memory. 2. Consistency. It becomes more difficult to accidentally update or edit only one op call. Instead, the code switches to the correct able by a single pointer write. In general this is atomic, either the pointer is updated or its not. 3. Code Layout. The VF structure can store a pointer to the table without needing to have the full structure definition defined prior to the VF structure definition. This will aid in future refactoring of code by allowing the VF pointer to be kept in ice_vf_lib.h while the virtchnl ops table can be maintained in ice_virtchnl.h There is one major downside in the case of the vc_ops structure. Most of the operations in the table are the same between the two current implementations. This can appear to lead to duplication since each implementation must now fill in the complete table. It could make spotting the differences in the representor mode more challenging. Unfortunately, methods to make this less error prone either add complexity overhead (macros using CPP token concatenation) or don't work on all compilers we support (constant initializer from another constant structure). The cost of maintaining two structures does not out weigh the benefits of the constant table model. While we're making these changes, go ahead and rename the structure and implementations with "virtchnl" instead of "vc_vf_". This will more closely align with the planned file renaming, and avoid similar names when we later introduce a "vf ops" table for separating Scalable IOV and Single Root IOV implementations. Leave the accessor/assignment functions in order to avoid issues with compiling with options disabled. The interface makes it easier to handle when CONFIG_PCI_IOV is disabled in the kernel. Signed-off-by: -
Jacob Keller authored
Several headers in the ice driver include ice.h even though they are themselves included by that header. The most notable of these is ice_common.h, but several other headers also do this. Such a recursive inclusion is problematic as it forces headers to be included in a strict order, otherwise compilation errors can result. The circular inclusions do not trigger an endless loop due to standard header inclusion guards, however other errors can occur. For example, ice_flow.h defines ice_rss_hash_cfg, which is used by ice_sriov.h as part of the definition of ice_vf_hash_ip_ctx. ice_flow.h includes ice_acl.h, which includes ice_common.h, and which finally includes ice.h. Since ice.h itself includes ice_sriov.h, this creates a circular dependency. The definition in ice_sriov.h requires things from ice_flow.h, but ice_flow.h itself will lead to trying to load ice_sriov.h as part of its process for expanding ice.h. The current code avoids this issue by having an implicit dependency without the include of ice_flow.h. If we were to fix that so that ice_sriov.h explicitly depends on ice_flow.h the following pattern would occur: ice_flow.h -> ice_acl.h -> ice_common.h -> ice.h -> ice_sriov.h At this point, during the expansion of, the header guard for ice_flow.h is already set, so when ice_sriov.h attempts to load the ice_flow.h header it is skipped. Then, we go on to begin including the rest of ice_sriov.h, including structure definitions which depend on ice_rss_hash_cfg. This produces a compiler warning because ice_rss_hash_cfg hasn't yet been included. Remember, we're just at the start of ice_flow.h! If the order of headers is incorrect (ice_flow.h is not implicitly loaded first in all files which include ice_sriov.h) then we get the same failure. Removing this recursive inclusion requires fixing a few cases where some headers depended on the header inclusions from ice.h. In addition, a few other changes are also required. Most notably, ice_hw_to_dev is implemented as a macro in ice_osdep.h, which is the likely reason that ice_common.h includes ice.h at all. This macro implementation requires the full definition of ice_pf in order to properly compile. Fix this by moving it to a function declared in ice_main.c, so that we do not require all files to depend on the layout of the ice_pf structure. Note that this change only fixes circular dependencies, but it does not fully resolve all implicit dependencies where one header may depend on the inclusion of another. I tried to fix as many of the implicit dependencies as I noticed, but fixing them all requires a somewhat tedious analysis of each header and attempting to compile it separately. Signed-off-by:
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Jacob Keller authored
The ice_virtchnl_pf.c and ice_virtchnl_pf.h files are where most of the code for implementing Single Root IOV virtualization resides. This code includes support for bringing up and tearing down VFs, hooks into the kernel SR-IOV netdev operations, and for handling virtchnl messages from VFs. In the future, we plan to support Scalable IOV in addition to Single Root IOV as an alternative virtualization scheme. This implementation will re-use some but not all of the code in ice_virtchnl_pf.c To prepare for this future, we want to refactor and split up the code in ice_virtchnl_pf.c into the following scheme: * ice_vf_lib.[ch] Basic VF structures and accessors. This is where scheme-independent code will reside. * ice_virtchnl.[ch] Virtchnl message handling. This is where the bulk of the logic for processing messages from VFs using the virtchnl messaging scheme will reside. This is separated from ice_vf_lib.c because it is distinct and has a bulk of the processing code. * ice_sriov.[ch] Single Root IOV implementation, including initialization and the routines for interacting with SR-IOV based netdev operations. * (future) ice_siov.[ch] Scalable IOV implementation. As a first step, lets assume that all of the code in ice_virtchnl_pf.[ch] is for Single Root IOV. Rename this file to ice_sriov.c and its header to ice_sriov.h Future changes will further split out the code in these files following the plan outlined here. Signed-off-by:
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Jacob Keller authored
The ice_sriov.c file primarily contains code which handles the logic for mailbox overflow detection and some other utility functions related to the virtualization mailbox. The bulk of the SR-IOV implementation is actually found in ice_virtchnl_pf.c, and this file isn't strictly SR-IOV specific. In the future, the ice driver will support an additional virtualization scheme known as Scalable IOV, and the code in this file will be used for this alternative implementation. Rename this file (and its associated header) to ice_vf_mbx.c, so that we can later re-use the ice_sriov.c file as the SR-IOV specific file. Signed-off-by:
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- 14 Mar, 2022 17 commits
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Niklas Söderlund authored
Fix the following coccicheck warning: drivers/net/ethernet/netronome/nfp/flower/action.c:959:7-69: WARNING avoid newline at end of message in NL_SET_ERR_MSG_MOD Signed-off-by:Niklas Söderlund <niklas.soderlund@corigine.com> Signed-off-by:
Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20220312095823.2425775-1-niklas.soderlund@corigine.comSigned-off-by:
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Saeed Mahameed authored
We need to sync page pool stats only for active channels. Reading ethtool stats on a down netdev or a netdev with modified number of channels will result in a user-after-free, trying to access page pools that are freed already. BUG: KASAN: use-after-free in mlx5e_stats_grp_sw_update_stats+0x465/0xf80 Read of size 8 at addr ffff888004835e40 by task ethtool/720 Fixes: cc10e84b ("mlx5: add support for page_pool_get_stats") Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com> Reported-by:
Joe Damato <jdamato@fastly.com> Link: https://lore.kernel.org/r/20220312005353.786255-1-saeed@kernel.orgSigned-off-by:
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Julia Lawall authored
Use kzalloc instead of kmalloc + memset. The semantic patch that makes this change is: (https://coccinelle.gitlabpages.inria.fr/website/) //<smpl> @@ expression res, size, flag; @@ - res = kmalloc(size, flag); + res = kzalloc(size, flag); ... - memset(res, 0, size); //</smpl> Signed-off-by:
Julia Lawall <Julia.Lawall@inria.fr> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Link: https://lore.kernel.org/r/20220312102705.71413-3-Julia.Lawall@inria.frSigned-off-by:
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Eric Dumazet authored
syzbot was kind enough to remind us that dev->{tx_dropped|rx_dropped} could be increased in process context. BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor413/3593 caller is netdev_core_stats_alloc+0x98/0x110 net/core/dev.c:10298 CPU: 1 PID: 3593 Comm: syz-executor413 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 check_preemption_disabled+0x16b/0x170 lib/smp_processor_id.c:49 netdev_core_stats_alloc+0x98/0x110 net/core/dev.c:10298 dev_core_stats include/linux/netdevice.h:3855 [inline] dev_core_stats_rx_dropped_inc include/linux/netdevice.h:3866 [inline] tun_get_user+0x3455/0x3ab0 drivers/net/tun.c:1800 tun_chr_write_iter+0xe1/0x200 drivers/net/tun.c:2015 call_write_iter include/linux/fs.h:2074 [inline] new_sync_write+0x431/0x660 fs/read_write.c:503 vfs_write+0x7cd/0xae0 fs/read_write.c:590 ksys_write+0x12d/0x250 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2cf4f887e3 Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffd50dd5fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffd50dd6000 RCX: 00007f2cf4f887e3 RDX: 000000000000002a RSI: 0000000000000000 RDI: 00000000000000c8 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd50dd5ff0 R14: 00007ffd50dd5fe8 R15: 00007ffd50dd5fe4 </TASK> Fixes: 625788b5 ("net: add per-cpu storage and net->core_stats") Signed-off-by:Eric Dumazet <edumazet@google.com> Cc: jeffreyji <jeffreyji@google.com> Cc: Brian Vazquez <brianvv@google.com> Acked-by:
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Julia Lawall authored
Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by:
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David S. Miller authored
Ioana Ciornei says: ==================== dpaa2-mac: add support for changing the protocol at runtime This patch set adds support for changing the Ethernet protocol at runtime on Layerscape SoCs which have the Lynx 28G SerDes block. The first two patches add a new generic PHY driver for the Lynx 28G and the bindings file associated. The driver reads the PLL configuration at probe time (the frequency provided to the lanes) and determines what protocols can be supported. Based on this the driver can deny or approve a request from the dpaa2-mac to setup a new protocol. The next 2 patches add some MC APIs for inquiring what is the running version of firmware and setting up a new protocol on the MAC. Moving along, we extract the code for setting up the supported interfaces on a MAC on a different function since in the next patches will update the logic. In the next patch, the dpaa2-mac is updated so that it retrieves the SerDes PHY based on the OF node and in case of a major reconfig, call the PHY driver to set up the new protocol on the associated lane and the MC firmware to reconfigure the MAC side of things. Finally, the LX2160A dtsi is annotated with the SerDes PHY nodes for the 1st SerDes block. Beside this, the LX2160A Clearfog dtsi is annotated with the 'phys' property for the exposed SFP cages. Changes in v2: - 1/8: add MODULE_LICENSE Changes in v3: - 2/8: fix 'make dt_binding_check' errors - 7/8: reverse order of dpaa2_mac_start() and phylink_start() - 7/8: treat all RGMII variants in dpmac_eth_if_mode - 7/8: remove the .mac_prepare callback - 7/8: ignore PHY_INTERFACE_MODE_NA in validate Changes in v4: - 1/8: remove the DT nodes parsing - 1/8: add an xlate function - 2/8: remove the children phy nodes for each lane - 7/8: rework the of_phy_get if statement - 8/8: remove the DT nodes for each lane and the lane id in the phys phandle Changes in v5: - 2/8: use phy as the name of the DT node in the example ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Ioana Ciornei authored
Describe the SerDes block #1 using the generic phys infrastructure. This way, the ethernet nodes can each reference their serdes lanes individually using the 'phys' dts property. Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Ioana Ciornei authored
This patch integrates the dpaa2-eth driver with the generic PHY infrastructure in order to search, find and reconfigure the SerDes lanes in case of a protocol change. On the .mac_config() callback, the phy_set_mode_ext() API is called so that the Lynx 28G SerDes PHY driver can change the lane's configuration. In the same phylink callback the MC firmware is called so that it reconfigures the MAC side to run using the new protocol. The consumer drivers - dpaa2-eth and dpaa2-switch - are updated to call the dpaa2_mac_start/stop functions newly added which will power_on/power_off the associated SerDes lane. Signed-off-by:
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Ioana Ciornei authored
The logic to setup the supported interfaces will get annotated based on what the configuration of the SerDes PLLs supports. Move the current setup into a separate function just to try to keep it clean. Signed-off-by:
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Ioana Ciornei authored
Retrieve the API version running on the firmware and based on it detect which features are available for usage. The first one to be listed is the capability to change the MAC protocol at runtime. Signed-off-by:
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Ioana Ciornei authored
The MC firmware gained recently a new command which can reconfigure the running protocol on the underlying MAC. Add this new command which will be used in the next patches in order to do a major reconfig on the interface. Signed-off-by:
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Ioana Ciornei authored
The dpmac_get_api_version command will be used in the next patches to determine if the current firmware is capable or not to change the Ethernet protocol running on the MAC. Signed-off-by:
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Ioana Ciornei authored
Add device tree binding for the Lynx 28G SerDes PHY driver used on Layerscape based SoCs. Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by:
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Ioana Ciornei authored
This patch adds a new generic PHY driver to support the Lynx 28G SerDes block found on some of the Layerscape SoCs such as LX2160A. At the moment, only the following Ethernet protocols are supported: SGMII/1000Base-X and 10GBaseR. SerDes lanes which are not running an Ethernet protocol or a currently supported Ethenet protocol will be left as it was configured through the RCW (Reset Configuration Word) at boot time. At probe time, the platform driver will read the current configuration of both PLLs found on a SerDes block and will determine what protocols are supported using that PLL. For example, if a PLL is configured to generate a clock net (frate) of 5GHz the only protocols sustained by that PLL are SGMII/1000Base-X (using a quarter of the full clock rate) and QSGMII using the full clock net frequency on the lane. On the .set_mode() callback, the PHY driver will first check if the requested operating mode (protocol) is even supported by the current PLL configuration and will error out if not. Then, the lane is reconfigured to run on the requested protocol. Signed-off-by:
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David S. Miller authored
Vladimir Oltean says: ==================== Basic QoS classification on Felix DSA switch using dcbnl Basic QoS classification for Ocelot switches means port-based default priority, DSCP-based and VLAN PCP based. This is opposed to advanced QoS classification which is done through the VCAP IS1 TCAM based engine. The patch set is a logical continuation of this RFC which attempted to describe the default-prio as a matchall entry placed at the end of a series of offloaded tc filters: https://patchwork.kernel.org/project/netdevbpf/cover/20210113154139.1803705-1-olteanv@gmail.com/ I have tried my best to satisfy the feedback that we should cater for pre-configured QoS profiles. Ironically, the only pre-configured QoS profile that the Felix switch driver has is for VLAN PCP (1:1 mapping with QoS class), yet IEEE 802.1Q or dcbnl offer no mechanism for reporting or changing that. Testing was done with the iproute2 dcb app. The qos_class of packets was dumped from net/dsa/tag_ocelot.c. (1) $ dcb app show dev swp3 default-prio 0 (2) $ dcb app replace dev swp3 default-prio 3 (3) $ dcb app replace dev swp3 dscp-prio CS3:5 (4) $ dcb app replace dev swp3 dscp-prio CS2:2 (5) $ dcb app show dev swp3 default-prio 3 dscp-prio CS2:2 CS3:5 Traffic sent with "ping -Q 64 <ipaddr>", which means CS2. These packets match qos_class 0 after command (1), qos_class 3 after command (2), qos_class 3 after command (3), and qos_class 2 after command (2). ==================== Signed-off-by:
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Vladimir Oltean authored
Follow the established programming model for this driver and provide shims in the felix DSA driver which call the implementations from the ocelot switch lib. The ocelot switchdev driver wasn't integrated with dcbnl due to lack of hardware availability. The switch doesn't have any fancy QoS classification enabled by default. The provided getters will create a default-prio app table entry of 0, and no dscp entry. However, the getters have been made to actually retrieve the hardware configuration rather than static values, to be future proof in case DSA will need this information from more call paths. For default-prio, there is a single field per port, in ANA_PORT_QOS_CFG, called QOS_DEFAULT_VAL. DSCP classification is enabled per-port, again via ANA_PORT_QOS_CFG (field QOS_DSCP_ENA), and individual DSCP values are configured as trusted or not through register ANA_DSCP_CFG (replicated 64 times). An untrusted DSCP value falls back to other QoS classification methods. If trusted, the selected ANA_DSCP_CFG register also holds the QoS class in the QOS_DSCP_VAL field. The hardware also supports DSCP remapping (DSCP value X is translated to DSCP value Y before the QoS class is determined based on the app table entry for Y) and DSCP packet rewriting. The dcbnl framework, for being so flexible in other useless areas, doesn't appear to support this. So this functionality has been left out. Signed-off-by:
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Vladimir Oltean authored
Similar to the port-based default priority, IEEE 802.1Q-2018 allows the Application Priority Table to define QoS classes (0 to 7) per IP DSCP value (0 to 63). In the absence of an app table entry for a packet with DSCP value X, QoS classification for that packet falls back to other methods (VLAN PCP or port-based default). The presence of an app table for DSCP value X with priority Y makes the hardware classify the packet to QoS class Y. As opposed to the default-prio where DSA exposes only a "set" in dsa_switch_ops (because the port-based default is the fallback, it always exists, either implicitly or explicitly), for DSCP priorities we expose an "add" and a "del". The addition of a DSCP entry means trusting that DSCP priority, the deletion means ignoring it. Drivers that already trust (at least some) DSCP values can describe their configuration in dsa_switch_ops :: port_get_dscp_prio(), which is called for each DSCP value from 0 to 63. Again, there can be more than one dcbnl app table entry for the same DSCP value, DSA chooses the one with the largest configured priority. Signed-off-by:
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