- 18 Jun, 2021 32 commits
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David S. Miller authored
Peng Li says: ==================== net: hostess_sv11: clean up some code style issues This patchset clean up some code style issues. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Peng Li authored
Alignment should match open parenthesis. Signed-off-by:
Peng Li <lipeng321@huawei.com> Signed-off-by:
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Peng Li authored
Networking block comments don't use an empty /* line, use /* Comment... Block comments use * on subsequent lines. Block comments use a trailing */ on a separate line. This patch fixes the comments style issues. Signed-off-by:
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Peng Li authored
This patch removes the dead code. Signed-off-by:
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Peng Li authored
According to the chackpatch.pl, switch and case should be at the same indent. Signed-off-by:
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Peng Li authored
This patch removes trailing whitespace. Signed-off-by:
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Peng Li authored
Should not use assignment in if condition. Signed-off-by:
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Peng Li authored
Fix the checkpatch error as "foo* bar" should be "foo *bar". Signed-off-by:
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David S. Miller authored
Mat Martineau says: ==================== mptcp: DSS checksum support RFC 8684 defines a DSS checksum feature that allows MPTCP to detect middlebox interference with the MPTCP DSS header and the portion of the data stream associated with that header. So far, the MPTCP implementation in the Linux kernel has not supported this feature. This patch series adds DSS checksum support. By default, the kernel will not request checksums when sending SYN or SYN/ACK packets for MPTCP connections. Outgoing checksum requests can be enabled with a per-namespace net.mptcp.checksum_enabled sysctl. MPTCP connections will now proceed with DSS checksums when the peer requests them, whether the sysctl is enabled or not. Patches 1-5 add checksum bits to the outgoing SYN, SYN/ACK, and data packet headers. This includes calculating the checksum using a range of data and the MPTCP DSS mapping for that data. Patches 6-10 handle the checksum request in the SYN or SYN/ACK, and receiving and verifying the DSS checksum on data packets. Patch 11 adjusts the MPTCP-level retransmission process for checksum compatibility. Patches 12-14 add checksum-related MIBs, the net.mptcp.checksum_enabled sysctl, and a checksum field to debug trace output. Patches 15 & 16 add selftests. The series is slightly longer than the preferred 15-patch limit that patchwork warns about. I do try to stay below that whenever possible - this series does implement one feature and is, I think, cohesive enough to justify keeping it together. If it's at all problematic please let me know! A trivial merge conflict with net/master is introduced in patch 15: a commit in net/master removes a couple of nearby lines of code. ==================== Signed-off-by: -
Geliang Tang authored
This patch added a new argument "-C" for the mptcp_join.sh script to set the sysctl checksum_enabled to 1 in ns1 and ns2 to enable the data checksum. In chk_join_nr, check the counter of the mib for the data checksum. Also added a new argument "-S" for the mptcp_join.sh script to start the test cases that verify the checksum handshake: * Sender and listener both have checksums off * Sender and listener both have checksums on * Sender checksums off, listener checksums on * Sender checksums on, listener checksums off The output looks like this: 01 checksum test 0 0 sum[ ok ] - csum [ ok ] 02 checksum test 1 1 sum[ ok ] - csum [ ok ] 03 checksum test 0 1 sum[ ok ] - csum [ ok ] 04 checksum test 1 0 sum[ ok ] - csum [ ok ] 05 no JOIN syn[ ok ] - synack[ ok ] - ack[ ok ] sum[ ok ] - csum [ ok ] 06 single subflow, limited by client syn[ ok ] - synack[ ok ] - ack[ ok ] sum[ ok ] - csum [ ok ] Acked-by:Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
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Geliang Tang authored
This patch added a new argument "-C" for the mptcp_connect.sh script to set the sysctl checksum_enabled to 1 in ns1, ns2, ns3 and ns4 to enable the data checksum. Acked-by:
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Geliang Tang authored
In mptcp_dump_mpext, dump the csum fields, csum and csum_reqd in struct mptcp_dump_mpext too. Acked-by:
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Geliang Tang authored
This patch added a new sysctl, named checksum_enabled, to control whether DSS checksum can be enabled. Acked-by:
Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by:
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Geliang Tang authored
This patch added the mib for the data checksum, MPTCP_MIB_DATACSUMERR. Acked-by:
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Paolo Abeni authored
If the MPTCP-level checksum is enabled, on re-injections we must spool a complete DSS, or the receive side will not be able to compute the csum and process any data. Signed-off-by:
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Paolo Abeni authored
This patch added three new members named data_csum, csum_len and map_csum in struct mptcp_subflow_context, implemented a new function named mptcp_validate_data_checksum(). If the current mapping is valid and csum is enabled traverse the later pending skbs and compute csum incrementally till the whole mapping has been covered. If not enough data is available in the rx queue, return MAPPING_EMPTY - that is, no data. Next subflow_data_ready invocation will trigger again csum computation. When the full DSS is available, validate the csum and return to the caller an appropriate error code, to trigger subflow reset of fallback as required by the RFC. Additionally: - if the csum prevence in the DSS don't match the negotiated value e.g. csum present, but not requested, return invalid mapping to trigger subflow reset. - keep some csum state, to avoid re-compute the csum on the same data when multiple rx queue traversal are required. - clean-up the uncompleted mapping from the receive queue on close, to allow proper subflow disposal Co-developed-by:
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Geliang Tang authored
In mptcp_parse_option, adjust the expected_opsize, and always parse the data checksum value from the receiving DSS regardless of csum presence. Then save it in mp_opt->csum. Co-developed-by:
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Geliang Tang authored
This patch added a new member named csum in struct mptcp_options_received. When parsing the MP_CAPABLE with data, if the checksum is enabled, adjust the expected_opsize. If the receiving option length matches the length with the data checksum, get the checksum value and save it in mp_opt->csum. And in mptcp_incoming_options, pass it to mpext->csum. We always parse any csum/nocsum combination and delay the presence check to later code, to allow reset if missing. Additionally, in the TX path, use the newly introduce ext field to avoid MPTCP csum recomputation on TCP retransmission and unneeded csum update on when setting the data fin_flag. Co-developed-by:
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Geliang Tang authored
This patch added a new flag csum_reqd in struct mptcp_options_received, if the flag MPTCP_CAP_CHECKSUM_REQD is set in the receiving MP_CAPABLE suboption, set this flag. In mptcp_sk_clone and subflow_finish_connect, if the csum_reqd flag is set, enable the msk->csum_enabled flag. Acked-by:
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Geliang Tang authored
This patch added a new parameter name sk in mptcp_get_options(). Acked-by:
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Geliang Tang authored
In mptcp_write_options, if the checksum is enabled, adjust the option length and send out the data checksum with DSS suboption. Co-developed-by:
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Geliang Tang authored
If the checksum is enabled, send out the data checksum with the MP_CAPABLE suboption with data. In mptcp_established_options_mp, save the data checksum in opts->ext_copy.csum. In mptcp_write_options, adjust the option length and send it out with the MP_CAPABLE suboption. Co-developed-by:
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Geliang Tang authored
This patch added a new member csum_reqd in struct mptcp_out_options and struct mptcp_subflow_request_sock. Initialized it with the helper function mptcp_is_checksum_enabled(). In mptcp_write_options, if this field is enabled, send out the MP_CAPABLE suboption with the MPTCP_CAP_CHECKSUM_REQD flag. Acked-by:
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Geliang Tang authored
This patch added a new member named csum in struct mptcp_ext, implemented a new function named mptcp_generate_data_checksum(). Generate the data checksum in mptcp_sendmsg_frag, save it in mpext->csum. Note that we must generate the csum for zero window probe, too. Do the csum update incrementally, to avoid multiple csum computation when the data is appended to existing skb. Note that in a later patch we will skip unneeded csum related operation. Changes not included here to keep the delta small. Co-developed-by:
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Geliang Tang authored
This patch added a new member named csum_enabled in struct mptcp_sock, used a dummy mptcp_is_checksum_enabled() helper to initialize it. Also added a new member named mptcpi_csum_enabled in struct mptcp_info to expose the csum_enabled flag. Acked-by:
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David S. Miller authored
Andrea Mayer says: ==================== seg6: add support for SRv6 End.DT46 Behavior SRv6 End.DT46 Behavior is defined in the IETF RFC 8986 [1] along with SRv6 End.DT4 and End.DT6 Behaviors. The proposed End.DT46 implementation is meant to support the decapsulation of both IPv4 and IPv6 traffic coming from a *single* SRv6 tunnel. The SRv6 End.DT46 Behavior greatly simplifies the setup and operations of SRv6 VPNs in the Linux kernel. - patch 1/2 is the core patch that adds support for the SRv6 End.DT46 Behavior; - patch 2/2 adds the selftest for SRv6 End.DT46 Behavior. The patch introducing the new SRv6 End.DT46 Behavior in iproute2 will follow shortly. Comments, suggestions and improvements are very welcome as always! ==================== Signed-off-by: -
Andrea Mayer authored
this selftest is designed for evaluating the new SRv6 End.DT46 Behavior used, in this example, for implementing IPv4/IPv6 L3 VPN use cases. Signed-off-by:
Andrea Mayer <andrea.mayer@uniroma2.it> Signed-off-by:
Paolo Lungaroni <paolo.lungaroni@uniroma2.it> Acked-by:
David Ahern <dsahern@kernel.org> Signed-off-by:
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Andrea Mayer authored
IETF RFC 8986 [1] includes the definition of SRv6 End.DT4, End.DT6, and End.DT46 Behaviors. The current SRv6 code in the Linux kernel only implements End.DT4 and End.DT6 which can be used respectively to support IPv4-in-IPv6 and IPv6-in-IPv6 VPNs. With End.DT4 and End.DT6 it is not possible to create a single SRv6 VPN tunnel to carry both IPv4 and IPv6 traffic. The proposed End.DT46 implementation is meant to support the decapsulation of IPv4 and IPv6 traffic coming from a single SRv6 tunnel. The implementation of the SRv6 End.DT46 Behavior in the Linux kernel greatly simplifies the setup and operations of SRv6 VPNs. The SRv6 End.DT46 Behavior leverages the infrastructure of SRv6 End.DT{4,6} Behaviors implemented so far, because it makes use of a VRF device in order to force the routing lookup into the associated routing table. To make the End.DT46 work properly, it must be guaranteed that the routing table used for routing lookup operations is bound to one and only one VRF during the tunnel creation. Such constraint has to be enforced by enabling the VRF strict_mode sysctl parameter, i.e.: $ sysctl -wq net.vrf.strict_mode=1 Note that the same approach is used for the SRv6 End.DT4 Behavior and for the End.DT6 Behavior in VRF mode. The command used to instantiate an SRv6 End.DT46 Behavior is straightforward, i.e.: $ ip -6 route add 2001:db8::1 encap seg6local action End.DT46 vrftable 100 dev vrf100. [1] https://www.rfc-editor.org/rfc/rfc8986.html#name-enddt46-decapsulation-and-s ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Performance and impact of SRv6 End.DT46 Behavior on the SRv6 Networking ======================================================================= This patch aims to add the SRv6 End.DT46 Behavior with minimal impact on the performance of SRv6 End.DT4 and End.DT6 Behaviors. In order to verify this, we tested the performance of the newly introduced SRv6 End.DT46 Behavior and compared it with the performance of SRv6 End.DT{4,6} Behaviors, considering both the patched kernel and the kernel before applying the End.DT46 patch (referred to as vanilla kernel). In details, the following decapsulation scenarios were considered: 1.a) IPv6 traffic in SRv6 End.DT46 Behavior on patched kernel; 1.b) IPv4 traffic in SRv6 End.DT46 Behavior on patched kernel; 2.a) SRv6 End.DT6 Behavior (VRF mode) on patched kernel; 2.b) SRv6 End.DT4 Behavior on patched kernel; 3.a) SRv6 End.DT6 Behavior (VRF mode) on vanilla kernel (without the End.DT46 patch); 3.b) SRv6 End.DT4 Behavior on vanilla kernel (without the End.DT46 patch). All tests were performed on a testbed deployed on the CloudLab [2] facilities. We considered IPv{4,6} traffic handled by a single core (at 2.4 GHz on a Xeon(R) CPU E5-2630 v3) on kernel 5.13-rc1 using packets of size ~ 100 bytes. Scenario (1.a): average 684.70 kpps; std. dev. 0.7 kpps; Scenario (1.b): average 711.69 kpps; std. dev. 1.2 kpps; Scenario (2.a): average 690.70 kpps; std. dev. 1.2 kpps; Scenario (2.b): average 722.22 kpps; std. dev. 1.7 kpps; Scenario (3.a): average 690.02 kpps; std. dev. 2.6 kpps; Scenario (3.b): average 721.91 kpps; std. dev. 1.2 kpps; Considering the results for the patched kernel (1.a, 1.b, 2.a, 2.b) we observe that the performance degradation incurred in using End.DT46 rather than End.DT6 and End.DT4 respectively for IPv6 and IPv4 traffic is minimal, around 0.9% and 1.5%. Such very minimal performance degradation is the price to be paid if one prefers to use a single tunnel capable of handling both types of traffic (IPv4 and IPv6). Comparing the results for End.DT4 and End.DT6 under the patched and the vanilla kernel (2.a, 2.b, 3.a, 3.b) we observe that the introduction of the End.DT46 patch has no impact on the performance of End.DT4 and End.DT6. [2] https://www.cloudlab.usSigned-off-by: -
Ioana Ciornei authored
Use the '.. code-block:: none' to properly highlight the documented DSDT entries. This also fixes warnings in the documentation build process. Fixes: e71305ac ("Documentation: ACPI: DSD: Document MDIO PHY") Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Ioana Ciornei authored
Include the new phy.rst into the index of the ACPI support documentation. Fixes: e71305ac ("Documentation: ACPI: DSD: Document MDIO PHY") Reported-by:
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Colin Ian King authored
The continue statement at the end of a for-loop has no effect, invert the if expression and remove the continue. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Oleksandr Mazur authored
devlink_trap tests for the netdevsim fail due to misspelled debugfs file name. Change this name, as well as name of callback function, to match the naming as in the devlink itself - 'trap_drop_counter'. Test-results: selftests: drivers/net/netdevsim: devlink_trap.sh TEST: Initialization [ OK ] TEST: Trap action [ OK ] TEST: Trap metadata [ OK ] TEST: Non-existing trap [ OK ] TEST: Non-existing trap action [ OK ] TEST: Trap statistics [ OK ] TEST: Trap group action [ OK ] TEST: Non-existing trap group [ OK ] TEST: Trap group statistics [ OK ] TEST: Trap policer [ OK ] TEST: Trap policer binding [ OK ] TEST: Port delete [ OK ] TEST: Device delete [ OK ] Fixes: a7b3527a ("drivers: net: netdevsim: add devlink trap_drop_counter_get implementation") Signed-off-by:
Oleksandr Mazur <oleksandr.mazur@plvision.eu> Reviewed-by:
Ido Schimmel <idosch@nvidia.com> Tested-by:
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- 17 Jun, 2021 8 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queueDavid S. Miller authored
Tony Nguyen says: ==================== 100GbE Intel Wired LAN Driver Updates 2021-06-17 This series contains updates to ice driver only. Jake corrects a couple of entries in the PTYPE table to properly reflect the datasheet and removes unneeded NULL checks for some PTP calls. Paul reduces the scope of variables and removes the use of a local variable. Shaokun Zhang removes a duplicate function declaration. Lorenzo Bianconi fixes a compilation warning if PTP_1588_CLOCK is disabled. Colin Ian King changes a for loop to remove an unneeded 'continue'. ==================== Signed-off-by: -
David S. Miller authored
Guangbin Huang says: ==================== net: hdlc_ppp: clean up some code style issues This patchset clean up some code style issues. --- Change Log： V1 -> V2: 1. remove patch "net: hdlc_ppp: fix the comments style issue" and patch "net: hdlc_ppp: remove redundant spaces" from this patchset. ==================== Signed-off-by: -
Peng Li authored
Add space required after that ','. Signed-off-by:
Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by:
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Peng Li authored
This patch removes unnecessary out of memory message, to fix the following checkpatch.pl warning: "WARNING: Possible unnecessary 'out of memory' message" Signed-off-by:
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Peng Li authored
Should not use assignment in if condition. Signed-off-by:
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Peng Li authored
Fix the checkpatch error as "foo* bar" or "foo*bar" should be "foo *bar". Signed-off-by:
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Peng Li authored
This patch fixes the checkpatch error about missing a blank line after declarations. Signed-off-by:
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Peng Li authored
This patch removes some redundant blank lines. Signed-off-by:
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