- 22 Aug, 2024 27 commits
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Ido Schimmel authored
Unmask the upper DSCP bits when calling ipmr_fib_lookup() so that in the future it could perform the FIB lookup according to the full DSCP value. Note that ipmr_fib_lookup() performs a FIB rule lookup (returning the relevant routing table) and that IPv4 multicast FIB rules do not support matching on TOS / DSCP. However, it is still worth unmasking the upper DSCP bits in case support for DSCP matching is ever added. Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Reviewed-by:
Guillaume Nault <gnault@redhat.com> Acked-by:
Florian Westphal <fw@strlen.de> Reviewed-by:
David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20240821125251.1571445-7-idosch@nvidia.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Ido Schimmel authored
In a similar fashion to the iptables rpfilter match, unmask the upper DSCP bits of the DS field of the currently tested packet so that in the future the FIB lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by:
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Ido Schimmel authored
The rpfilter match performs a reverse path filter test on a packet by performing a FIB lookup with the source and destination addresses swapped. Unmask the upper DSCP bits of the DS field of the tested packet so that in the future the FIB lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by:
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Ido Schimmel authored
The Record Route IP option records the addresses of the routers that routed the packet. In the case of forwarded packets, the kernel performs a route lookup via fib_lookup() and fills in the preferred source address of the matched route. Unmask the upper DSCP bits when performing the lookup so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by:
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Ido Schimmel authored
The NETLINK_FIB_LOOKUP netlink family can be used to perform a FIB lookup according to user provided parameters and communicate the result back to user space. Unmask the upper DSCP bits of the user-provided DS field before invoking the IPv4 FIB lookup API so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by:
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Ido Schimmel authored
The helper performs a FIB lookup according to the parameters in the 'params' argument, one of which is 'tos'. According to the test in test_tc_neigh_fib.c, it seems that BPF programs are expected to initialize the 'tos' field to the full 8 bit DS field from the IPv4 header. Unmask the upper DSCP bits before invoking the IPv4 FIB lookup APIs so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by:
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Jakub Kicinski authored
Abhinav Jain says: ==================== Enhance network interface feature testing This small series includes fixes for creation of veth pairs for networkless kernels & adds tests for turning the different network interface features on and off in selftests/net/netdevice.sh script. Tested using vng and compiles for network as well as networkless kernel. # selftests: net: netdevice.sh # No valid network device found, creating veth pair # PASS: veth0: set interface up # PASS: veth0: set MAC address # XFAIL: veth0: set IP address unsupported for veth* # PASS: veth0: ethtool list features # PASS: veth0: Turned off feature: rx-checksumming # PASS: veth0: Turned on feature: rx-checksumming # PASS: veth0: Restore feature rx-checksumming to initial state on # Actual changes: # tx-checksum-ip-generic: off ... # PASS: veth0: Turned on feature: rx-udp-gro-forwarding # PASS: veth0: Restore feature rx-udp-gro-forwarding to initial state off # Cannot get register dump: Operation not supported # XFAIL: veth0: ethtool dump not supported # PASS: veth0: ethtool stats # PASS: veth0: stop interface ==================== Link: https://patch.msgid.link/20240821171903.118324-1-jain.abhinav177@gmail.comSigned-off-by:
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Abhinav Jain authored
Check if veth pair was created and if yes, xfail on setting IP address logging an informational message. Use XFAIL instead of SKIP for unsupported ethtool APIs. Signed-off-by:
Abhinav Jain <jain.abhinav177@gmail.com> Reviewed-by:
Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240821171903.118324-4-jain.abhinav177@gmail.comSigned-off-by:
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Abhinav Jain authored
Implement on/off testing for all non-fixed features via while loop. Signed-off-by:
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Abhinav Jain authored
Check if the netdev list is empty and create veth pair to be used for feature on/off testing. Remove the veth pair after testing is complete. Signed-off-by:
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Simon Horman authored
W=1 builds with GCC 14.2.0 warn that: .../aq_ethtool.c:278:59: warning: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 6 [-Wformat-truncation=] 278 | snprintf(tc_string, 8, "TC%d ", tc); | ^~ .../aq_ethtool.c:278:56: note: directive argument in the range [-2147483641, 254] 278 | snprintf(tc_string, 8, "TC%d ", tc); | ^~~~~~~ .../aq_ethtool.c:278:33: note: ‘snprintf’ output between 5 and 15 bytes into a destination of size 8 278 | snprintf(tc_string, 8, "TC%d ", tc); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tc is always in the range 0 - cfg->tcs. And as cfg->tcs is a u8, the range is 0 - 255. Further, on inspecting the code, it seems that cfg->tcs will never be more than AQ_CFG_TCS_MAX (8), so the range is actually 0 - 8. So, it seems that the condition that GCC flags will not occur. But, nonetheless, it would be nice if it didn't emit the warning. It seems that this can be achieved by changing the format specifier from %d to %u, in which case I believe GCC recognises an upper bound on the range of tc of 0 - 255. After some experimentation I think this is due to the combination of the use of %u and the type of cfg->tcs (u8). Empirically, updating the type of the tc variable to unsigned int has the same effect. As both of these changes seem to make sense in relation to what the code is actually doing - iterating over unsigned values - do both. Compile tested only. Signed-off-by: -
Yu Jiaoliang authored
Let the kememdup_array() take care about multiplication and possible overflows. Signed-off-by:
Yu Jiaoliang <yujiaoliang@vivo.com> Signed-off-by:
Louis Peens <louis.peens@corigine.com> Reviewed-by:
Paolo Abeni <pabeni@redhat.com>
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Lorenzo Bianconi authored
GDM1 port on EN7581 SoC is connected to the lan dsa switch. GDM{2,3,4} can be used as wan port connected to an external phy module. Configure hw mac address registers according to the port id. Signed-off-by:Lorenzo Bianconi <lorenzo@kernel.org> Link: https://patch.msgid.link/20240821-airoha-eth-wan-mac-addr-v2-1-8706d0cd6cd5@kernel.orgSigned-off-by:
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Jakub Kicinski authored
A few tests check if nettest exists in the $PATH before adding $PWD to $PATH and re-checking. They don't discard stderr on the first check (and nettest is built as part of selftests, so it's pretty normal for it to not be available in system $PATH). This leads to output noise: which: no nettest in (/home/virtme/tools/fs/bin:/home/virtme/tools/fs/sbin:/home/virtme/tools/fs/usr/bin:/home/virtme/tools/fs/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin) Add a common helper for the check which does silence stderr. There is another small functional change hiding here, because pmtu.sh and fib_rule_tests.sh used to return from the test case rather than completely exit. Building nettest is not hard, there should be no need to maintain the ability to selectively skip cases in its absence. Reviewed-by:
Hangbin Liu <liuhangbin@gmail.com> Link: https://patch.msgid.link/20240821012227.1398769-1-kuba@kernel.orgSigned-off-by:
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Paolo Abeni authored
Justin Iurman says: ==================== net: ipv6: ioam6: introduce tunsrc This series introduces a new feature called "tunsrc" (just like seg6 already does). v3: - address Jakub's comments v2: - add links to performance result figures (see patch#2 description) - move the ipv6_addr_any() check out of the datapath ==================== Link: https://patch.msgid.link/20240817131818.11834-1-justin.iurman@uliege.beSigned-off-by:
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Justin Iurman authored
This patch provides a new feature (i.e., "tunsrc") for the tunnel (i.e., "encap") mode of ioam6. Just like seg6 already does, except it is attached to a route. The "tunsrc" is optional: when not provided (by default), the automatic resolution is applied. Using "tunsrc" when possible has a benefit: performance. See the comparison: - before (= "encap" mode): https://ibb.co/bNCzvf7 - after (= "encap" mode with "tunsrc"): https://ibb.co/PT8L6yqSigned-off-by:
Justin Iurman <justin.iurman@uliege.be> Signed-off-by:
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Justin Iurman authored
This patch prepares the next one by correcting the alignment of some lines. Signed-off-by:
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Paolo Abeni authored
Currently the parsing code generator assumes that the yaml specification file name and the main 'name' attribute carried inside correspond, that is the field is the c-name representation of the file basename. The above assumption held true within the current tree, but will be hopefully broken soon by the upcoming net shaper specification. Additionally, it makes the field 'name' itself useless. Lift the assumption, always computing the generated include file name from the generated c file name. Signed-off-by:
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Jakub Kicinski authored
Sean Anderson says: ==================== net: xilinx: axienet: Add statistics support Add support for hardware statistics counters (if they are enabled) in the AXI Ethernet driver. Unfortunately, the implementation is complicated a bit since the hardware might only support 32-bit counters. ==================== Link: https://patch.msgid.link/20240820175343.760389-1-sean.anderson@linux.devSigned-off-by:
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Sean Anderson authored
Add support for reading the statistics counters, if they are enabled. The counters may be 64-bit, but we can't detect this statically as there's no ability bit for it and the counters are read-only. Therefore, we assume the counters are 32-bits by default. To ensure we don't miss an overflow, we read all counters at 13-second intervals. This should be often enough to ensure the bytes counters don't wrap at 2.5 Gbit/s. Another complication is that the counters may be reset when the device is reset (depending on configuration). To ensure the counters persist across link up/down (including suspend/resume), we maintain our own versions along with the last counter value we saw. Because we might wait up to 100 ms for the reset to complete, we use a mutex to protect writing hw_stats. We can't sleep in ndo_get_stats64, so we use a seqlock to protect readers. We don't bother disabling the refresh work when we detect 64-bit counters. This is because the reset issue requires us to read hw_stat_base and reset_in_progress anyway, which would still require the seqcount. And I don't think skipping the task is worth the extra bookkeeping. We can't use the byte counters for either get_stats64 or get_eth_mac_stats. This is because the byte counters include everything in the frame (destination address to FCS, inclusive). But rtnl_link_stats64 wants bytes excluding the FCS, and ethtool_eth_mac_stats wants to exclude the L2 overhead (addresses and length/type). It might be possible to calculate the byte values Linux expects based on the frame counters, but I think it is simpler to use the existing software counters. get_ethtool_stats is implemented for nonstandard statistics. This includes the aforementioned byte counters, VLAN and PFC frame counters, and user-defined (e.g. with custom RTL) counters. Signed-off-by:
Sean Anderson <sean.anderson@linux.dev> Link: https://patch.msgid.link/20240820175343.760389-3-sean.anderson@linux.devSigned-off-by:
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Sean Anderson authored
The Receive Frame Rejected interrupt is asserted whenever there was a receive error (bad FCS, bad length, etc.) or whenever the frame was dropped due to a mismatched address. So this is really a combination of rx_otherhost_dropped, rx_length_errors, rx_frame_errors, and rx_crc_errors. Mismatched addresses are common and aren't really errors at all (much like how fragments are normal on half-duplex links). To avoid confusion, report these events as rx_dropped. This better reflects what's going on: the packet was received by the MAC but dropped before being processed. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> Link: https://patch.msgid.link/20240820175343.760389-2-sean.anderson@linux.devSigned-off-by:
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Jakub Kicinski authored
Adding the NAPI pointer to struct netdev_queue made it grow into another cacheline, even though there was 44 bytes of padding available. The struct was historically grouped as follows: /* read-mostly stuff (align) */ /* ... random control path fields ... */ /* write-mostly stuff (align) */ /* ... 40 byte hole ... */ /* struct dql (align) */ It seems that people want to add control path fields after the read only fields. struct dql looks pretty innocent but it forces its own alignment and nothing indicates that there is a lot of empty space above it. Move dql above the xmit_lock. This shifts the empty space to the end of the struct rather than in the middle of it. Move two example fields there to set an example. Hopefully people will now add new fields at the end of the struct. A lot of the read-only stuff is also control path-only, but if we move it all we'll have another hole in the middle. Before: /* size: 384, cachelines: 6, members: 16 */ /* sum members: 284, holes: 3, sum holes: 100 */ After: /* size: 320, cachelines: 5, members: 16 */ /* sum members: 284, holes: 1, sum holes: 8 */ Reviewed-by:Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20240820205119.1321322-1-kuba@kernel.orgSigned-off-by:
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Dan Carpenter authored
BIT() is unsigned long but ->pu.flg_msk and ->pu.flg_val are u64 type. On 32 bit systems, unsigned long is a u32 and the mismatch between u32 and u64 will break things for the high 32 bits. Fixes: 9a4c07aa ("ice: add parser execution main loop") Signed-off-by:
Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by:
Alexander Lobakin <aleksander.lobakin@intel.com> Link: https://patch.msgid.link/ddc231a8-89c1-4ff4-8704-9198bcb41f8d@stanley.mountainSigned-off-by:
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Xi Huang authored
err varibale will be set everytime,like -ENOBUFS and in if (err < 0), when code gets into this path. This check will just slowdown the execution and that's all. Signed-off-by:
Xi Huang <xuiagnh@gmail.com> Reviewed-by:
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Jinjie Ruan authored
Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by:
Jinjie Ruan <ruanjinjie@huawei.com> Link: https://patch.msgid.link/20240820075047.681223-1-ruanjinjie@huawei.comSigned-off-by:
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Jinjie Ruan authored
Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by:
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Gustavo A. R. Silva authored
-Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Remove unnecessary flex-array member `data[]`, and with this fix the following warnings: drivers/nfc/pn533/usb.c:268:38: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] drivers/nfc/pn533/usb.c:275:38: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by:
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- 21 Aug, 2024 2 commits
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Jinjian Song authored
WWAN device is programmed to boot in normal mode or fastboot mode, when triggering a device reset through ACPI call or fastboot switch command. Maintain state machine synchronization and reprobe logic after a device reset. The PCIe device reset triggered by several ways. E.g.: - fastboot: echo "fastboot_switching" > /sys/bus/pci/devices/${bdf}/t7xx_mode. - reset: echo "reset" > /sys/bus/pci/devices/${bdf}/t7xx_mode. - IRQ: PCIe device request driver to reset itself by an interrupt request. Use pci_reset_function() as a generic way to reset device, save and restore the PCIe configuration before and after reset device to ensure the reprobe process. Suggestion from Bjorn: Link: https://lore.kernel.org/all/20230127133034.GA1364550@bhelgaas/Signed-off-by:Jinjian Song <jinjian.song@fibocom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Fainelli authored
Rather than print an error even when we get -EPROBE_DEFER, use dev_err_probe() to filter out those messages. Link: https://github.com/openwrt/openwrt/pull/11680Signed-off-by:
Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by:
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- 20 Aug, 2024 11 commits
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James Chapman authored
Recent commit ed8ebee6 ("l2tp: have l2tp_ip_destroy_sock use ip_flush_pending_frames") was incorrect in that l2tp_ip does not use socket cork and ip_flush_pending_frames is for sockets that do. Use __skb_queue_purge instead and remove the unnecessary lock. Also unexport ip_flush_pending_frames since it was originally exported in commit 4ff88634 ("ipv4: export ip_flush_pending_frames") for l2tp and is not used by other modules. Suggested-by: xiyou.wangcong@gmail.com Signed-off-by:
James Chapman <jchapman@katalix.com> Reviewed-by:
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Kuniyuki Iwashima authored
Since introduced, OOB skb holds an additional reference count with no special reason and caused many issues. Also, kfree_skb() and consume_skb() are used to decrement the count, which is confusing. Let's drop the unnecessary skb_get() in queue_oob() and corresponding kfree_skb(), consume_skb(), and skb_unref(). Now unix_sk(sk)->oob_skb is just a pointer to skb in the receive queue, so special handing is no longer needed in GC. Signed-off-by:
Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20240816233921.57800-1-kuniyu@amazon.comSigned-off-by:
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Krzysztof Kozlowski authored
Properties with variable number of items per each device are expected to have widest constraints in top-level "properties:" block and further customized (narrowed) in "if:then:". Add missing top-level constraints for clock-names and reset-names. Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by:
Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20240818172905.121829-4-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Krzysztof Kozlowski authored
Properties with variable number of items per each device are expected to have widest constraints in top-level "properties:" block and further customized (narrowed) in "if:then:". Add missing top-level constraints for reg, clocks, clock-names, interrupts and interrupt-names. Signed-off-by:
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Krzysztof Kozlowski authored
Properties with variable number of items per each device are expected to have widest constraints in top-level "properties:" block and further customized (narrowed) in "if:then:". Add missing top-level constraints for clocks and clock-names. Signed-off-by:
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Krzysztof Kozlowski authored
Each variable-length property like interrupts must have fixed constraints on number of items for given variant in binding. The clauses in "if:then:" block should define both limits: upper and lower. Signed-off-by:
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Gal Pressman authored
When metadata_dst struct is allocated (using metadata_dst_alloc()), it reserves room for options at the end of the struct. Change the memcpy() to unsafe_memcpy() as it is guaranteed that enough room (md_size bytes) was allocated and the field-spanning write is intentional. This resolves the following warning: ------------[ cut here ]------------ memcpy: detected field-spanning write (size 104) of single field "&new_md->u.tun_info" at include/net/dst_metadata.h:166 (size 96) WARNING: CPU: 2 PID: 391470 at include/net/dst_metadata.h:166 tun_dst_unclone+0x114/0x138 [geneve] Modules linked in: act_tunnel_key geneve ip6_udp_tunnel udp_tunnel act_vlan act_mirred act_skbedit cls_matchall nfnetlink_cttimeout act_gact cls_flower sch_ingress sbsa_gwdt ipmi_devintf ipmi_msghandler xfrm_interface xfrm6_tunnel tunnel6 tunnel4 xfrm_user xfrm_algo nvme_fabrics overlay optee openvswitch nsh nf_conncount ib_srp scsi_transport_srp rpcrdma rdma_ucm ib_iser rdma_cm ib_umad iw_cm libiscsi ib_ipoib scsi_transport_iscsi ib_cm uio_pdrv_genirq uio mlxbf_pmc pwr_mlxbf mlxbf_bootctl bluefield_edac nft_chain_nat binfmt_misc xt_MASQUERADE nf_nat xt_tcpmss xt_NFLOG nfnetlink_log xt_recent xt_hashlimit xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_mark xt_comment ipt_REJECT nf_reject_ipv4 nft_compat nf_tables nfnetlink sch_fq_codel dm_multipath fuse efi_pstore ip_tables btrfs blake2b_generic raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq raid1 raid0 nvme nvme_core mlx5_ib ib_uverbs ib_core ipv6 crc_ccitt mlx5_core crct10dif_ce mlxfw psample i2c_mlxbf gpio_mlxbf2 mlxbf_gige mlxbf_tmfifo CPU: 2 PID: 391470 Comm: handler6 Not tainted 6.10.0-rc1 #1 Hardware name: https://www.mellanox.com BlueField SoC/BlueField SoC, BIOS 4.5.0.12993 Dec 6 2023 pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : tun_dst_unclone+0x114/0x138 [geneve] lr : tun_dst_unclone+0x114/0x138 [geneve] sp : ffffffc0804533f0 x29: ffffffc0804533f0 x28: 000000000000024e x27: 0000000000000000 x26: ffffffdcfc0e8e40 x25: ffffff8086fa6600 x24: ffffff8096a0c000 x23: 0000000000000068 x22: 0000000000000008 x21: ffffff8092ad7000 x20: ffffff8081e17900 x19: ffffff8092ad7900 x18: 00000000fffffffd x17: 0000000000000000 x16: ffffffdcfa018488 x15: 695f6e75742e753e x14: 2d646d5f77656e26 x13: 6d5f77656e262220 x12: 646c65696620656c x11: ffffffdcfbe33ae8 x10: ffffffdcfbe1baa8 x9 : ffffffdcfa0a4c10 x8 : 0000000000017fe8 x7 : c0000000ffffefff x6 : 0000000000000001 x5 : ffffff83fdeeb010 x4 : 0000000000000000 x3 : 0000000000000027 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff80913f6780 Call trace: tun_dst_unclone+0x114/0x138 [geneve] geneve_xmit+0x214/0x10e0 [geneve] dev_hard_start_xmit+0xc0/0x220 __dev_queue_xmit+0xa14/0xd38 dev_queue_xmit+0x14/0x28 [openvswitch] ovs_vport_send+0x98/0x1c8 [openvswitch] do_output+0x80/0x1a0 [openvswitch] do_execute_actions+0x172c/0x1958 [openvswitch] ovs_execute_actions+0x64/0x1a8 [openvswitch] ovs_packet_cmd_execute+0x258/0x2d8 [openvswitch] genl_family_rcv_msg_doit+0xc8/0x138 genl_rcv_msg+0x1ec/0x280 netlink_rcv_skb+0x64/0x150 genl_rcv+0x40/0x60 netlink_unicast+0x2e4/0x348 netlink_sendmsg+0x1b0/0x400 __sock_sendmsg+0x64/0xc0 ____sys_sendmsg+0x284/0x308 ___sys_sendmsg+0x88/0xf0 __sys_sendmsg+0x70/0xd8 __arm64_sys_sendmsg+0x2c/0x40 invoke_syscall+0x50/0x128 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x38/0x100 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x1a4/0x1a8 ---[ end trace 0000000000000000 ]--- Reviewed-by:
Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
Gal Pressman <gal@nvidia.com> Link: https://patch.msgid.link/20240818114351.3612692-1-gal@nvidia.comSigned-off-by:
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Zhang Zekun authored
There is a helper function ARRAY_SIZE() to help calculating the u32 array size, and we don't need to do it mannually. So, let's use ARRAY_SIZE() to calculate the array size, and improve the code readability. Signed-off-by:
Zhang Zekun <zhangzekun11@huawei.com> Reviewed-by: Jijie Shao<shaojijie@huawei.com> Link: https://patch.msgid.link/20240818052518.45489-1-zhangzekun11@huawei.comSigned-off-by:
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Jakub Kicinski authored
Looking at timestamped output of netdev CI reveals that most of the time in forwarding tests for custom route hashing is spent on a single case, namely the test which uses ping (mausezahn does not support flow labels). On a non-debug kernel we spend 714 of 730 total test runtime (97%) on this test case. While having flow label support in a traffic gen tool / mausezahn would be best, we can significantly speed up the loop by putting ip vrf exec outside of the iteration. In a test of 1000 pings using a normal loop takes 50 seconds to finish. While using: ip vrf exec $vrf sh -c "$loop-body" takes 12 seconds (1/4 of the time). Some of the slowness is likely due to our inefficient virtualization setup, but even on my laptop running "ip link help" 16k times takes 25-30 seconds, so I think it's worth optimizing even for fastest setups. Reviewed-by:
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Zhang Zekun authored
for_each_child_of_node can help to iterate through the device_node, and we don't need to use while loop. No functional change with this conversion. Signed-off-by:
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Paolo Abeni authored
Ido Schimmel says: ==================== Preparations for FIB rule DSCP selector This patchset moves the masking of the upper DSCP bits in 'flowi4_tos' to the core instead of relying on callers of the FIB lookup API to do it. This will allow us to start changing users of the API to initialize the 'flowi4_tos' field with all six bits of the DSCP field. In turn, this will allow us to extend FIB rules with a new DSCP selector. By masking the upper DSCP bits in the core we are able to maintain the behavior of the TOS selector in FIB rules and routes to only match on the lower DSCP bits. While working on this I found two users of the API that do not mask the upper DSCP bits before performing the lookup. The first is an ancient netlink family that is unlikely to be used. It is adjusted in patch #1 to mask both the upper DSCP bits and the ECN bits before calling the API. The second user is a nftables module that differs in this regard from its equivalent iptables module. It is adjusted in patch #2 to invoke the API with the upper DSCP bits masked, like all other callers. The relevant selftest passed, but in the unlikely case that regressions are reported because of this change, we can restore the existing behavior using a new flow information flag as discussed here [1]. The last patch moves the masking of the upper DSCP bits to the core, making the first two patches redundant, but I wanted to post them separately to call attention to the behavior change for these two users of the FIB lookup API. Future patchsets (around 3) will start unmasking the upper DSCP bits throughout the networking stack before adding support for the new FIB rule DSCP selector. Changes from v1 [2]: Patch #3: Include <linux/ip.h> in <linux/in_route.h> instead of including it in net/ip_fib.h [1] https://lore.kernel.org/netdev/ZpqpB8vJU%2FQ6LSqa@debian/ [2] https://lore.kernel.org/netdev/20240725131729.1729103-1-idosch@nvidia.com/ ==================== Link: https://patch.msgid.link/20240814125224.972815-1-idosch@nvidia.comSigned-off-by:
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