- 18 Jun, 2021 40 commits
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Yunsheng Lin authored
In the current rx page reuse handling process, the rx page buffer may have conflict between driver and stack in high-pressure scenario. To fix this problem, we need to check whether the page is only owned by driver at the begin and at the end of a page to make sure there is no reuse conflict between driver and stack when desc_cb->page_offset is rollbacked to zero or increased. Fixes: fa7711b8 ("net: hns3: optimize the rx page reuse handling process") Signed-off-by:
Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by:
Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Vladimir Oltean authored
It turns out that powering down the BASE_TIMER_CLK does not turn off the microcontroller, just its timers, including the one for the watchdog. So the embedded microcontroller is still running, and potentially still doing things. To prevent unwanted interference, we should power down the BASE_MCSS_CLK as well (MCSS = microcontroller subsystem). The trouble is that currently we turn off the BASE_TIMER_CLK for SJA1110 from the .clocking_setup() method, mostly because this is a Clock Generation Unit (CGU) setting which was traditionally configured in that method for SJA1105. But in SJA1105, the CGU was used for bringing up the port clocks at the proper speeds, and in SJA1110 it's not (but rather for initial configuration), so it's best that we rebrand the sja1110_clocking_setup() method into what it really is - an implementation of the .disable_microcontroller() method. Since disabling the microcontroller only needs to be done once, at probe time, we can choose the best place to do that as being in sja1105_setup(), before we upload the static config to the device. This guarantees that the static config being used by the switch afterwards is really ours. Note that the procedure to upload a static config necessarily resets the switch. This already did not reset the microcontroller, only the switch core, so since the .disable_microcontroller() method is guaranteed to be called by that point, if it's disabled, it remains disabled. Add a comment to make that clear. With the code movement for SJA1110 from .clocking_setup() to .disable_microcontroller(), both methods are optional and are guarded by "if" conditions. Tested by enabling in the device tree the rev-mii switch port 0 that goes towards the microcontroller, and flashing a firmware that would have networking. Without this patch, the microcontroller can be pinged, with this patch it cannot. Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Colin Ian King authored
The continue statement at the end of a for-loop has no effect, it is redundant and can be removed. Addresses-Coverity: ("Continue has no effect") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-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. Addresses-Coverity: ("Continue has no effect") Signed-off-by:Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by:
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Colin Ian King authored
The continue statement in the for-loop has no effect, remove it. Addresses-Coverity: ("Continue has no effect") Signed-off-by: -
Pavel Machek authored
Commit 0571a753 cancelled delayed work too late, keeping small race. Cancel work sooner to close it completely. Signed-off-by:
Pavel Machek (CIP) <pavel@denx.de> Fixes: 0571a753 ("net: pxa168_eth: Fix a potential data race in pxa168_eth_remove") Signed-off-by:
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wengjianfeng authored
Simplify the code by removing unnecessary labels and returning directly. Signed-off-by:
wengjianfeng <wengjianfeng@yulong.com> Signed-off-by:
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dingsenjie authored
Simplify the return expression in the rvu_npc_fs.c Signed-off-by:
dingsenjie <dingsenjie@yulong.com> Signed-off-by:
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Dongliang Mu authored
Modify the label out_err to out to avoid the meanless kfree. Signed-off-by:
Dongliang Mu <mudongliangabcd@gmail.com> Signed-off-by:
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Jakub Kicinski authored
Currently UDP tunnel devices on top of VLANs lose the ability to offload UDP GSO. Widen the pass thru features from TSO to all GSO_SOFTWARE. Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
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Qing Zhang authored
Add the dwmac bindings for the Loongson-2K SoC and the LS7A bridge chip. Signed-off-by:
Qing Zhang <zhangqing@loongson.cn> Signed-off-by:
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Qing Zhang authored
The GMAC module is now supported, enable it. Signed-off-by:
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Qing Zhang authored
The GMAC module is now supported, enable it. Signed-off-by:
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Qing Zhang authored
This GMAC module is integrated into the Loongson-2K SoC and the LS7A bridge chip. Signed-off-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by:
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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: -
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:
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