- 04 Oct, 2022 12 commits
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Oleksij Rempel authored
Add property to reference node representing a PoDL Power Sourcing Equipment. Signed-off-by:
Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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Jakub Kicinski authored
Yevhen Orlov says: ==================== net: marvell: prestera: add nexthop routes offloading Add support for nexthop routes for Marvell Prestera driver. Subscribe on NEIGH_UPDATE events. Add features: - Support connected route adding e.g.: "ip address add 1.1.1.1/24 dev sw1p1" e.g.: "ip route add 6.6.6/24 dev sw1p1" - Support nexthop route adding e.g.: "ip route add 5.5.5/24 via 1.1.1.2" - Support ECMP route adding e.g.: "ip route add 5.5.5/24 nexthop via 1.1.1.2 nexthop via 1.1.1.3" - Support "offload" and "trap" flags per each nexthop - Support "offload" flag for neighbours Limitations: - Only "local" and "main" tables supported - Only generic interfaces supported for router (no bridges or vlans) Flags meaning: ip route add 5.5.5/24 nexthop via 2.2.2.2 nexthop via 2.2.2.3 ip route show ... 5.5.5.0/24 rt_offload nexthop via 2.2.2.2 dev sw1p31 weight 1 trap nexthop via 2.2.2.3 dev sw1p31 weight 1 trap ... # When you just add route - lpm entry became occupied # in HW ("rt_offload" flag), but related to nexthops neighbours # still not resolved ("trap" flag). # # After some time... ip route show ... 5.5.5.0/24 rt_offload nexthop via 2.2.2.2 dev sw1p31 weight 1 offload nexthop via 2.2.2.3 dev sw1p31 weight 1 offload ... # You will see, that appropriate neighbours was resolved and nexthop # entries occupied in HW too ("offload" flag) Co-developed-by:Taras Chornyi <tchornyi@marvell.com> Signed-off-by:
Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by:
Yevhen Orlov <yevhen.orlov@plvision.eu> Changes for v2: * Add more reviewers in CC * Check if route nexthop or direct with fib_nh_gw_family instead of fib_nh_scope This is needed after, 747c1430 ("ip: fix dflt addr selection for connected nexthop"), because direct route is now with the same scope as nexthop (RT_SCOPE_LINK) Changes for v3: * Resolve "unused functions" warnings, after patch ("net: marvell: prestera: Add heplers to interact ... "), and before patch ("net: marvell: prestera: Add neighbour cache accounting") Changes for v4: * Rebase to the latest master to resolve patch applying issues Changes for v5: * Repack structures to prevent holes * Remove unused variables * Fix misspeling issues Changes for v6: * Rebase on top of master * Fix smatch warnings Changes for v7: * Rebase on top of master * Refactor: use "fib_lookup" instead of "fib_new_table"+"fib_table_lookup", according to Paolo Abeni suggestion * Refactor: use "rhashtable_free_and_destroy" instead of rhashtable walk, according to Paolo Abeni suggestion ==================== Link: https://lore.kernel.org/r/20221001093417.22388-1-yevhen.orlov@plvision.euSigned-off-by:
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Yevhen Orlov authored
We poll nexthops in HW and call for each active nexthop appropriate neighbour. Also we provide implicity neighbour resolving. For example, user have added nexthop route: # ip route add 5.5.5.5 via 1.1.1.2 But neighbour 1.1.1.2 doesn't exist. In this case we will try to call neigh_event_send, even if there is no traffic. This is useful, when you have add route, which will be used after some time but with a lot of traffic (burst). So, we has prepared, offloaded route in advance. Co-developed-by:
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Yevhen Orlov authored
Move forward and use new PRESTERA_FIB_TYPE_UC_NH to provide basic nexthop routes support. Provide deinitialization sequence for all created router objects. Limitations: - Only "local" and "main" tables supported - Only generic interfaces supported for router (no bridges or vlans) Co-developed-by:
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Yevhen Orlov authored
Actual handler will be added in next patches Co-developed-by:
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Yevhen Orlov authored
This will be used to implement nexthops related logic in next patches. Also try to keep ipv4/6 abstraction to be able to reuse helpers for ipv6 in the future. Co-developed-by:
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Yevhen Orlov authored
Add macros to determine IP address length (internal driver types). This will be used in next patches for nexthops logic. Co-developed-by:
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Yevhen Orlov authored
Flushing workqueues ensures, that no more pending works, related to just unregistered or deinitialized notifiers. After that we can free memory. Delayed wq will be used for neighbours in next patches. Co-developed-by:
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Yevhen Orlov authored
This will, ensure, that there is no more, preciously allocated fib_cache entries left after deinit. Will be used to free allocated resources of nexthop routes, that points to "not our" port (e.g. eth0). Signed-off-by:
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Yevhen Orlov authored
Do explicity cleanup on router_hw_fini, to ensure, that all allocated objects cleaned. This will be used in cases, when upper layer (cache) is not mapped to router_hw layer. Co-developed-by:
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Yevhen Orlov authored
- Add functions to allocate/delete/set nexthop group - NOTE: non-ECMP nexthop is nexthop group with allocated size = 1 - Add function to read state of HW nh (if packets going through it) Co-developed-by:
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Jakub Kicinski authored
Guenter reports I missed a netif_napi_add() call in one of the platform-specific drivers: drivers/net/ethernet/cavium/octeon/octeon_mgmt.c: In function 'octeon_mgmt_probe': drivers/net/ethernet/cavium/octeon/octeon_mgmt.c:1399:9: error: too many arguments to function 'netif_napi_add' 1399 | netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll, | ^~~~~~~~~~~~~~ Reported-by:Guenter Roeck <linux@roeck-us.net> Fixes: b48b89f9 ("net: drop the weight argument from netif_napi_add") Link: https://lore.kernel.org/r/20221002175650.1491124-1-kuba@kernel.orgSigned-off-by:
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- 03 Oct, 2022 28 commits
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Jakub Kicinski authored
Saeed Mahameed says: ==================== mlx5 xsk updates part4 and more 1) Final part of xsk improvements, in this series Maxim continues to improve xsk implementation a) XSK Busy polling support b) Use KLM to avoid Frame overrun in unaligned mode c) Optimize unaligned more for certain frame sizes d) Other straight forward minor optimizations. part 1: https://lore.kernel.org/netdev/20220927203611.244301-1-saeed@kernel.org/ part 2: https://lore.kernel.org/netdev/20220929072156.93299-1-saeed@kernel.org/ part 3: https://lore.kernel.org/netdev/20220930162903.62262-1-saeed@kernel.org/ 2) Oversize packets firmware counter, from Gal. 3) Set default grace period for health reporters based on function type 4) Some minor E-Switch improvements ==================== Link: https://lore.kernel.org/r/20221002045632.291612-1-saeed@kernel.orgSigned-off-by:
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Jianbo Liu authored
It is to avoid tc retrying during device mode change. Signed-off-by:
Jianbo Liu <jianbol@nvidia.com> Reviewed-by:
Roi Dayan <roid@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com> Signed-off-by:
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Chris Mi authored
Currently, qos group will be updated and qos will be enabled when unregistering devlink port. Actually no need to update group if qos is not enabled. Add a check to prevent unnecessary enabling and disabling qos for every port. Signed-off-by:
Chris Mi <cmi@nvidia.com> Reviewed-by:
Dmytro Linkin <dlinkin@nvidia.com> Signed-off-by:
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Roi Dayan authored
Before this commit a fwd dest flow table resulted in ignoring vport dests which is incorrect and is supported. With this commit the dests can be a mix of flow table and vport dests. There is still a limitation that there cannot be more than one flow table dest. Signed-off-by:
Maor Dickman <maord@nvidia.com> Signed-off-by:
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Maher Sanalla authored
Currently, driver sets the same grace period for fw fatal health reporter to any type of function. Since the lower level functions are more vulnerable to fw fatal errors as a result of parent function closure/reload, set a smaller grace period for the lower level functions, as follows: 1. For ECPF: 180 seconds. 2. For PF: 60 seconds. 3. For VF/SF: 30 seconds. Signed-off-by:
Maher Sanalla <msanalla@nvidia.com> Reviewed-by:
Moshe Shemesh <moshe@nvidia.com> Signed-off-by:
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Moshe Shemesh authored
Start health poll at earlier stage, so if fw fatal issue occurred before or during initialization commands such as init_hca or set_hca_cap the poll health can detect and indicate that the driver is already in error state. Signed-off-by:
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Gal Pressman authored
Add the rx_oversize_pkts_buffer counter to ethtool statistics. This counter exposes the number of dropped received packets due to length which arrived to RQ and exceed software buffer size allocated by the device for incoming traffic. It might imply that the device MTU is larger than the software buffers size. Signed-off-by:
Gal Pressman <gal@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
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Maxim Mikityanskiy authored
When XSK frame size is 3072 (or another power of two multiplied by 3), KLM mechanism for NIC virtual memory page mapping can be optimized by replacing it with KSM. Before this change, two KLM entries were needed to map an XSK frame that is not a power of two: one entry maps the UMEM memory up to the frame length, the other maps the rest of the stride to the garbage page. When the frame length divided by 3 is a power of two, it can be mapped using 3 KSM entries, and the fourth will map the rest of the stride to the garbage page. All 4 KSM entries are of the same size, which allows for a much faster lookup. Frame size 3072 is useful in certain use cases, because it allows packing 4 frames into 3 pages. Generally speaking, other frame sizes equal to PAGE_SIZE minus a power of two can be optimized in a similar way, but it will require many more KSMs per frame, which slows down UMRs a little bit, but more importantly may hit the limit for the maximum number of KSM entries. Signed-off-by:
Maxim Mikityanskiy <maximmi@nvidia.com> Reviewed-by:
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Maxim Mikityanskiy authored
On striding RQ, when the XSK frame size doesn't match the MKey page size, KLM is used for memory mappings, which is a slower mechanism than MTT or KSM. It may happen in two cases: 1. Frame size is not a power of two (only possible in the unaligned mode of XSK). 2. Frame size is 2048 bytes, and the firmware doesn't support MKey pages smaller than 4096 bytes. Depending on the case, print a warning and recommend to disable striding RQ or upgrade the firmware. Signed-off-by:
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Maxim Mikityanskiy authored
XSK RQs support striding RQ linear mode, but the stride size may be bigger than the XSK frame size, because: 1. The stride size must be a power of two. 2. The stride size must be equal to the UMR page size. Each XSK frame is treated as a separate page, because they aren't necessarily adjacent in physical memory, so the driver can't put more than one stride per page. 3. The minimal MTT page size is 4096 on older firmware. That means that if XSK frame size is 2048 or not a power of two, the strides may be bigger than XSK frames. Normally, it's not a problem if the hardware enforces the MTU. However, traffic between vports skips the hardware MTU check, and oversized packets may be received. If an oversized packet is bigger than the XSK frame but not bigger than the stride, it will cause overwriting of the adjacent UMEM region. If the packet takes more than one stride, they can be recycled for reuse, so it's not a problem when the XSK frame size matches the stride size. Work around the above issue by leveraging KLM to make a more fine-grained mapping. The beginning of each stride is mapped to the frame memory, and the padding up to the closest power of two is mapped to the overflow page that doesn't belong to UMEM. This way, application data corruption won't happen upon receiving packets bigger than MTU. Signed-off-by:
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Maxim Mikityanskiy authored
Make mlx5e_mpwrq_mtts_per_wqe take into account that KSM requires smaller alignment than MTT. Ensure that there is always an even amount of MTTs in a UMR WQE, so that complete octwords are formed, and no garbage is mapped. Drop extra alignment in MLX5_MTT_OCTW that may cause setting too big ucseg->xlt_octowords, also leading to mapping garbage. Generalize some calculations by introducing the MLX5_OCTWORD constant. Signed-off-by:
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Maxim Mikityanskiy authored
Instead of passing the unaligned flag, pass an enum that indicates the UMR mode. The next commit will add the third mode (KLM for certain configurations of XSK), which will be added to this enum instead of adding another bool flag everywhere. Signed-off-by:
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Maxim Mikityanskiy authored
XSK need_wakeup mechanism allows the driver to stop busy waiting for buffers when the fill ring is empty, yield to the application and signal it that the driver needs to be waken up after the application refills the fill ring. Add protection against the race condition on the RX (refill) side: if the application refills buffers after xskrq->post_wqes is called, but before mlx5e_xsk_update_rx_wakeup, NAPI will exit, skipping taking these buffers to the hardware WQ, and the application won't wake it up again. Optimize the whole need_wakeup logic, removing unneeded flows, to compensate for this new check. Signed-off-by:
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Maxim Mikityanskiy authored
XSK is a performance-critical data path. To avoid an indirect function call with a retpoline, include XSK callbacks in the INDIRECT_CALL macro, so that they are called directly in XSK flows. Signed-off-by:
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Maxim Mikityanskiy authored
xdp_rxq_info_reg should get the actual napi_id, not 0, in order to support socket busy polling properly. Signed-off-by:
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Maxim Mikityanskiy authored
The regular RQ remains open after opening an XSK socket, in order to guarantee that closing the XSK socket never fails due to an error when reopening the regular RQ. To save memory, the regular RQ can be deactivated and flushed, releasing all pages, when an XSK socket is open. Signed-off-by:
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Alex Elder authored
Some source files state copyright dates that are earlier than the last modification of the file. Change the copyright year to 2022 in all such cases. Signed-off-by:
Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20220930224549.3503434-1-elder@linaro.orgSigned-off-by:
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Alex Elder authored
This patch just updates comments throughout the IPA code. Transaction state is now tracked using indexes into an array rather than linked lists, and a few comments refer to the "old way" of doing things. The description of how transactions are used was changed to refer to "operations" rather than "commands", to (hopefully) remove a possible ambiguity. IPA register offsets and fields are now handled differently as well, and the register documentation is updated to better describe the code. A few minor updates to comments were made (e.g., adding a missing word, fixing a typo or punctuation, etc.). Finally, the local macro atomic_dec_not_zero() is no longer used, so it is deleted. Signed-off-by:
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Nathan Huckleberry authored
The ndo_start_xmit field in net_device_ops is expected to be of type netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev). The mismatched return type breaks forward edge kCFI since the underlying function definition does not match the function hook definition. The return type of lan966x_port_xmit should be changed from int to netdev_tx_t. Reported-by:
Dan Carpenter <error27@gmail.com> Link: https://github.com/ClangBuiltLinux/linux/issues/1703 Cc: llvm@lists.linux.dev Signed-off-by:
Nathan Huckleberry <nhuck@google.com> Reviewed-by:
Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20220929182704.64438-1-nhuck@google.comSigned-off-by:
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextJakub Kicinski authored
Daniel Borkmann says: ==================== pull-request: bpf-next 2022-10-03 We've added 143 non-merge commits during the last 27 day(s) which contain a total of 151 files changed, 8321 insertions(+), 1402 deletions(-). The main changes are: 1) Add kfuncs for PKCS#7 signature verification from BPF programs, from Roberto Sassu. 2) Add support for struct-based arguments for trampoline based BPF programs, from Yonghong Song. 3) Fix entry IP for kprobe-multi and trampoline probes under IBT enabled, from Jiri Olsa. 4) Batch of improvements to veristat selftest tool in particular to add CSV output, a comparison mode for CSV outputs and filtering, from Andrii Nakryiko. 5) Add preparatory changes needed for the BPF core for upcoming BPF HID support, from Benjamin Tissoires. 6) Support for direct writes to nf_conn's mark field from tc and XDP BPF program types, from Daniel Xu. 7) Initial batch of documentation improvements for BPF insn set spec, from Dave Thaler. 8) Add a new BPF_MAP_TYPE_USER_RINGBUF map which provides single-user-space-producer / single-kernel-consumer semantics for BPF ring buffer, from David Vernet. 9) Follow-up fixes to BPF allocator under RT to always use raw spinlock for the BPF hashtab's bucket lock, from Hou Tao. 10) Allow creating an iterator that loops through only the resources of one task/thread instead of all, from Kui-Feng Lee. 11) Add support for kptrs in the per-CPU arraymap, from Kumar Kartikeya Dwivedi. 12) Add a new kfunc helper for nf to set src/dst NAT IP/port in a newly allocated CT entry which is not yet inserted, from Lorenzo Bianconi. 13) Remove invalid recursion check for struct_ops for TCP congestion control BPF programs, from Martin KaFai Lau. 14) Fix W^X issue with BPF trampoline and BPF dispatcher, from Song Liu. 15) Fix percpu_counter leakage in BPF hashtab allocation error path, from Tetsuo Handa. 16) Various cleanups in BPF selftests to use preferred ASSERT_* macros, from Wang Yufen. 17) Add invocation for cgroup/connect{4,6} BPF programs for ICMP pings, from YiFei Zhu. 18) Lift blinding decision under bpf_jit_harden = 1 to bpf_capable(), from Yauheni Kaliuta. 19) Various libbpf fixes and cleanups including a libbpf NULL pointer deref, from Xin Liu. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (143 commits) net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c Documentation: bpf: Add implementation notes documentations to table of contents bpf, docs: Delete misformatted table. selftests/xsk: Fix double free bpftool: Fix error message of strerror libbpf: Fix overrun in netlink attribute iteration selftests/bpf: Fix spelling mistake "unpriviledged" -> "unprivileged" samples/bpf: Fix typo in xdp_router_ipv4 sample bpftool: Remove unused struct event_ring_info bpftool: Remove unused struct btf_attach_point bpf, docs: Add TOC and fix formatting. bpf, docs: Add Clang note about BPF_ALU bpf, docs: Move Clang notes to a separate file bpf, docs: Linux byteswap note bpf, docs: Move legacy packet instructions to a separate file selftests/bpf: Check -EBUSY for the recurred bpf_setsockopt(TCP_CONGESTION) bpf: tcp: Stop bpf_setsockopt(TCP_CONGESTION) in init ops to recur itself bpf: Refactor bpf_setsockopt(TCP_CONGESTION) handling into another function bpf: Move the "cdg" tcp-cc check to the common sol_tcp_sockopt() bpf: Add __bpf_prog_{enter,exit}_struct_ops for struct_ops trampoline ... ==================== Link: https://lore.kernel.org/r/20221003194915.11847-1-daniel@iogearbox.netSigned-off-by: -
Lorenzo Bianconi authored
Remove circular dependency between nf_nat module and nf_conntrack one moving bpf_ct_set_nat_info kfunc in nf_nat_bpf.c Fixes: 0fabd2aa ("net: netfilter: add bpf_ct_set_nat_info kfunc helper") Suggested-by:
Kumar Kartikeya Dwivedi <memxor@gmail.com> Tested-by:
Yauheni Kaliuta <ykaliuta@redhat.com> Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Acked-by:
John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/r/51a65513d2cda3eeb0754842e8025ab3966068d8.1664490511.git.lorenzo@kernel.orgSigned-off-by:
Alexei Starovoitov <ast@kernel.org>
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Bagas Sanjaya authored
Sphinx reported warnings on missing implementation notes documentations in the table of contents: Documentation/bpf/clang-notes.rst: WARNING: document isn't included in any toctree Documentation/bpf/linux-notes.rst: WARNING: document isn't included in any toctree Add these documentations to the table of contents (index.rst) of BPF documentation to fix the warnings. Link: https://lore.kernel.org/linux-doc/202210020749.yfgDZbRL-lkp@intel.com/ Fixes: 6c7aaffb ("bpf, docs: Move Clang notes to a separate file") Fixes: 6166da0a ("bpf, docs: Move legacy packet instructions to a separate file") Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20221002032022.24693-1-bagasdotme@gmail.comSigned-off-by:
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Eric Dumazet authored
Christophe Leroy reported a ~80ms latency spike happening at first TCP connect() time. This is because __inet_hash_connect() uses get_random_once() to populate a perturbation table which became quite big after commit 4c2c8f03 ("tcp: increase source port perturb table to 2^16") get_random_once() uses DO_ONCE(), which block hard irqs for the duration of the operation. This patch adds DO_ONCE_SLOW() which uses a mutex instead of a spinlock for operations where we prefer to stay in process context. Then __inet_hash_connect() can use get_random_slow_once() to populate its perturbation table. Fixes: 4c2c8f03 ("tcp: increase source port perturb table to 2^16") Fixes: 190cc824 ("tcp: change source port randomizarion at connect() time") Reported-by:
Christophe Leroy <christophe.leroy@csgroup.eu> Link: https://lore.kernel.org/netdev/CANn89iLAEYBaoYajy0Y9UmGFff5GPxDUoG-ErVB2jDdRNQ5Tug@mail.gmail.com/T/#tSigned-off-by:
Eric Dumazet <edumazet@google.com> Cc: Willy Tarreau <w@1wt.eu> Tested-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Subbaraya Sundeep says: ==================== net: Introduce macsec hardware offload for cn10k platform CN10K-B and CNF10K-B variaints of CN10K silicon has macsec block(MCS) to encrypt and decrypt packets at MAC/hardware level. This block is a global resource with hardware resources like SecYs, SCs and SAs and is in between NIX block and RPM LMAC. CN10K-B silicon has only one MCS block which receives packets from all LMACS whereas CNF10K-B has seven MCS blocks for seven LMACs. Both MCS blocks are similar in operation except for few register offsets and some configurations require writing to different registers. This patchset introduces macsec hardware offloading support. AF driver manages hardware resources and PF driver consumes them when macsec hardware offloading is needed. Patch 1 adds basic pci driver for both CN10K-B and CNF10K-B silicons and initializes hardware block. Patches 2 and 3 adds mailboxes to init, reset and manage resources of the MCS block Patch 4 adds a low priority rule in MCS TCAM so that the traffic which do not need macsec processing can be sent/received Patch 5 adds macsec stats collection support Patch 6 adds interrupt handling support and any event in which AF consumer is interested can be notified via mbox notification Patch 7 adds debugfs support which helps in debugging packet path Patch 8 introduces macsec hardware offload feature for PF netdev driver. v3 changes: Fixed clang and sparse warnings v2 changes: Fix build error by changing #ifdef CONFIG_MACSEC to #if IS_ENABLED(CONFIG_MACSEC) ==================== Signed-off-by: -
Subbaraya Sundeep authored
This patch introduces the macsec offload feature to cn10k PF netdev driver. The macsec offload ops like adding, deleting and updating SecYs, SCs, SAs and stats are supported. XPN support will be added in later patches. Some stats use same counter in hardware which means based on the SecY mode the same counter represents different stat. Hence when SecY mode/policy is changed then snapshot of current stats are captured. Also there is no provision to specify the unique flow-id/SCI per packet to hardware hence different mac address needs to be set for macsec interfaces. Signed-off-by:
Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by:
Sunil Goutham <sgoutham@marvell.com> Signed-off-by:
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Geetha sowjanya authored
This patch adds debugfs entry to dump MCS secy, sc, sa, flowid and port stats. This helps in debugging the packet path and to figure out where exactly packet was dropped. Signed-off-by:
Geetha sowjanya <gakula@marvell.com> Signed-off-by:
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Geetha sowjanya authored
Hardware triggers an interrupt for events like PN wrap to zero, PN crosses set threshold. This interrupt is received by the MCS_AF. MCS AF then finds the PF/VF to which SA is mapped and notifies them using mcs_intr_notify mbox message. PF/VF using mcs_intr_cfg mbox can configure the list of interrupts for which they want to receive the notification from AF. Signed-off-by:
Vamsi Attunuru <vattunuru@marvell.com> Signed-off-by:
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Geetha sowjanya authored
Add mailbox messages to return the resource stats to the caller. Stats of SecY, SC and SAs as per the macsec standard, TCAM flow id hits/miss, mailbox to clear the stats are implemented. Signed-off-by:
Ankur Dwivedi <adwivedi@marvell.com> Signed-off-by:
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