- 16 Jan, 2023 6 commits
-
-
Heng Qi authored
Support xdp for multi buffer packets in mergeable mode. Putting the first buffer as the linear part for xdp_buff, and the rest of the buffers as non-linear fragments to struct skb_shared_info in the tailroom belonging to xdp_buff. Let 'truesize' return to its literal meaning, that is, when xdp is set, it includes the length of headroom and tailroom. Signed-off-by:
Heng Qi <hengqi@linux.alibaba.com> Reviewed-by:
Xuan Zhuo <xuanzhuo@linux.alibaba.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
-
Heng Qi authored
Update relative record value for xdp_frame as basis for multi-buffer xdp transmission. Signed-off-by:
-
Heng Qi authored
When the xdp program sets xdp.frags, which means it can process multi-buffer packets over larger MTU, so we continue to support xdp. Signed-off-by:
-
Heng Qi authored
When single-buffer xdp is loaded, the size of the buffer filled each time is 'sz = (PAGE_SIZE - headroom - tailroom)', which is the maximum packet length that the driver allows the device to pass in. Otherwise, the packet with a length greater than sz will come in, so num_buf will be greater than or equal to 2, and xdp_linearize_page() will be performed and the packet will be dropped because the total length is greater than PAGE_SIZE. So the maximum value of MTU for single-buffer xdp is 'max_sz = sz - ETH_HLEN'. Signed-off-by:
-
Heng Qi authored
XDP core assumes that the frame_size of xdp_buff and the length of the frag are PAGE_SIZE. The hole may cause the processing of xdp to fail, so we disable the hole mechanism when xdp is set. Signed-off-by:
-
Srujana Challa authored
Updates CPT inbound inline IPsec configure mailbox to take CPT credit, opcode, credit_th and bpid from VF. This patch also adds a mailbox to read inbound IPsec configuration. Signed-off-by:
Srujana Challa <schalla@marvell.com> Signed-off-by:
-
- 14 Jan, 2023 23 commits
-
-
Jakub Kicinski authored
David Thompson says: ==================== mlxbf_gige: add BlueField-3 support This patch series adds driver logic to the "mlxbf_gige" Ethernet driver in order to support the third generation BlueField SoC (BF3). The existing "mlxbf_gige" driver is extended with BF3-specific logic and run-time decisions are made by the driver depending on the SoC generation (BF2 vs. BF3). The BF3 SoC is similar to BF2 SoC with regards to transmit and receive packet processing: * Driver rings usage; consumer & producer indices * Single queue for receive and transmit * DMA operation The differences between BF3 and BF2 SoC are: * In addition to supporting 1Gbps interface speed, the BF3 SoC adds support for 10Mbps and 100Mbps interface speeds * BF3 requires SerDes config logic to support its SGMII interface * BF3 adds support for "ethtool -s" for interface speed config * BF3 utilizes different MDIO logic for accessing the board-level PHY device Testing - Successful build of kernel for ARM64, ARM32, X86_64 - Tested ARM64 build on FastModels, Palladium, SoC ==================== Link: https://lore.kernel.org/r/20230112202609.21331-1-davthompson@nvidia.comSigned-off-by:Jakub Kicinski <kuba@kernel.org>
-
David Thompson authored
This patch fixes the white space issue raised by checkpatch: CHECK: Alignment should match open parenthesis +static int mlxbf_gige_eth_ioctl(struct net_device *netdev, + struct ifreq *ifr, int cmd) Signed-off-by:
David Thompson <davthompson@nvidia.com> Signed-off-by:
Asmaa Mnebhi <asmaa@nvidia.com> Signed-off-by:
-
David Thompson authored
This patch extends the "ethtool_ops" data structure to include the "set_link_ksettings" callback. This change enables configuration of the various interface speeds that the BlueField-3 supports (10Mbps, 100Mbps, and 1Gbps). Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
-
David Thompson authored
The BlueField-3 OOB interface supports 10Mbps, 100Mbps, and 1Gbps speeds. The external PHY is responsible for autonegotiating the speed with the link partner. Once the autonegotiation is done, the BlueField PLU needs to be configured accordingly. This patch does two things: 1) Initialize the advertised control flow/duplex/speed in the probe based on the BlueField SoC generation (2 or 3) 2) Adjust the PLU speed config in the PHY interrupt handler Signed-off-by:
-
David Thompson authored
This patch adds initial MDIO support for the BlueField-3 SoC. Separate header files for the BlueField-2 and the BlueField-3 SoCs have been created. These header files hold the SoC-specific MDIO macros since the register offsets and bit fields have changed. Also, in BlueField-3 there is a separate register for writing and reading the MDIO data. Finally, instead of having "if" statements everywhere to differentiate between SoC-specific logic, a mlxbf_gige_mdio_gw_t struct was created for this purpose. Signed-off-by:
-
Russell King (Oracle) authored
Use the phylink_get_link_timer_ns() helper to get the period for the link timer. Signed-off-by:
Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/E1pFyhW-0067jq-Fh@rmk-PC.armlinux.org.ukSigned-off-by:
-
Piergiorgio Beruto authored
Revert a wrong fix that was done during the review process. The intention was to substitute "if(ret < 0)" with "if(ret)". Unfortunately, the intended fix did not meet the code. Besides, after additional review, it was decided that "if(ret < 0)" was actually the right thing to do. Fixes: 8580e16c ("net/ethtool: add netlink interface for the PLCA RS") Signed-off-by:
Piergiorgio Beruto <piergiorgio.beruto@gmail.com> Reviewed-by:
Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/f2277af8951a51cfee2fb905af8d7a812b7beaf4.1673616357.git.piergiorgio.beruto@gmail.comSigned-off-by:
-
Jakub Kicinski authored
Michael Walle says: ==================== net: mdio: Continue separating C22 and C45 I've picked this older series from Andrew up and rebased it onto the latest net-next. This is the second patch set in the series which separates the C22 and C45 MDIO bus transactions at the API level to the MDIO bus drivers. ==================== Link: https://lore.kernel.org/r/20230112-net-next-c45-seperation-part-2-v1-0-5eeaae931526@walle.ccSigned-off-by:
-
Andrew Lunn authored
The enetc MDIO bus driver can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls where appropriate. This driver is shared with the Felix DSA switch, so update that at the same time. Signed-off-by:
Michael Walle <michael@walle.cc> Signed-off-by:
-
Andrew Lunn authored
The stmmac MDIO bus driver in variant gmac4 can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls where appropriate. Signed-off-by:
-
Andrew Lunn authored
The stmicro stmmac xgmac2 MDIO bus driver can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls where appropriate. Signed-off-by:
-
Andrew Lunn authored
The microchip lan743x MDIO bus driver can perform both C22 and C45 transfers in some variants. Create separate functions for each and register the C45 versions using the new API calls where appropriate. Signed-off-by:
-
Andrew Lunn authored
The mediatek bus driver can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls. Signed-off-by:
-
Andrew Lunn authored
The ipq4019 driver can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new driver API calls. Signed-off-by:
-
Andrew Lunn authored
The aspeed MDIO bus driver can perform both C22 and C45 transfers. Modify the existing C45 functions to take the devad as a parameter, and remove the wrappers so there are individual C22 and C45 functions. Add the C45 functions to the new API calls. Signed-off-by:
-
Andrew Lunn authored
The MDIO mux broadcom iproc can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls. Signed-off-by:
-
Andrew Lunn authored
The MDIO over I2C bus driver can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions using the new API calls. Signed-off-by:
-
Andrew Lunn authored
The cavium IP can perform both C22 and C45 transfers. Create separate functions for each and register the C45 versions in both the octeon and thunder bus driver. Signed-off-by:
-
Bin Chen authored
Add basic DCB IEEE support. This includes support for ETS, max-rate, and DSCP to user priority mapping. DCB may be configured using iproute2's dcb command. Example usage: dcb ets set dev $dev tc-tsa 0:ets 1:ets 2:ets 3:ets 4:ets 5:ets \ 6:ets 7:ets tc-bw 0:0 1:80 2:0 3:0 4:0 5:0 6:20 7:0 dcb maxrate set dev $dev tc-maxrate 1:1000bit And DCB configuration can be shown using: dcb ets show dev $dev dcb maxrate show dev $dev Signed-off-by:Bin Chen <bin.chen@corigine.com> Signed-off-by:
Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230112121102.469739-1-simon.horman@corigine.comSigned-off-by:
-
Lorenzo Bianconi authored
Similar to MTK Wireless Ethernet Dispatcher (WED) MCU rx queue, we do not need to protect WED MCU tx queue with a spin lock since the tx queue is accessed in the two following routines: - mtk_wed_wo_queue_tx_skb(): it is run at initialization and during mt7915 normal operation. Moreover MCU messages are serialized through MCU mutex. - mtk_wed_wo_queue_tx_clean(): it runs just at mt7915 driver module unload when no more messages are sent to the MCU. Remove tx queue spinlock. Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/7bd0337b2a13ab1a63673b7c03fd35206b3b284e.1673515140.git.lorenzo@kernel.orgSigned-off-by:
-
Jon Maxwell authored
In ip6_dst_gc() replace: if (entries > gc_thresh) With: if (entries > ops->gc_thresh) Sending Ipv6 packets in a loop via a raw socket triggers an issue where a route is cloned by ip6_rt_cache_alloc() for each packet sent. This quickly consumes the Ipv6 max_size threshold which defaults to 4096 resulting in these warnings: [1] 99.187805] dst_alloc: 7728 callbacks suppressed [2] Route cache is full: consider increasing sysctl net.ipv6.route.max_size. . . [300] Route cache is full: consider increasing sysctl net.ipv6.route.max_size. When this happens the packet is dropped and sendto() gets a network is unreachable error: remaining pkt 200557 errno 101 remaining pkt 196462 errno 101 . . remaining pkt 126821 errno 101 Implement David Aherns suggestion to remove max_size check seeing that Ipv6 has a GC to manage memory usage. Ipv4 already does not check max_size. Here are some memory comparisons for Ipv4 vs Ipv6 with the patch: Test by running 5 instances of a program that sends UDP packets to a raw socket 5000000 times. Compare Ipv4 and Ipv6 performance with a similar program. Ipv4: Before test: MemFree: 29427108 kB Slab: 237612 kB ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 2881 3990 192 42 2 : tunables 0 0 0 During test: MemFree: 29417608 kB Slab: 247712 kB ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 44394 44394 192 42 2 : tunables 0 0 0 After test: MemFree: 29422308 kB Slab: 238104 kB ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0 Ipv6 with patch: Errno 101 errors are not observed anymore with the patch. Before test: MemFree: 29422308 kB Slab: 238104 kB ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0 During Test: MemFree: 29431516 kB Slab: 240940 kB ip6_dst_cache 11980 12064 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0 After Test: MemFree: 29441816 kB Slab: 238132 kB ip6_dst_cache 1902 2432 256 32 2 : tunables 0 0 0 xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0 ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0 Tested-by:
Andrea Mayer <andrea.mayer@uniroma2.it> Signed-off-by:
Jon Maxwell <jmaxwell37@gmail.com> Reviewed-by:
David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230112012532.311021-1-jmaxwell37@gmail.comSigned-off-by:
-
Keith Busch authored
The details of the iov_iter types are appropriately abstracted, so there's no need to check for specific type fields. Just let the abstractions handle it. This is preparing for io_uring/net's io_send to utilize the more efficient ITER_UBUF. Signed-off-by:
Keith Busch <kbusch@kernel.org> Reviewed-by:
Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20230111184245.3784393-1-kbusch@meta.comSigned-off-by:
-
Anand Moon authored
Fix compatible string for RV1126 gmac, and constrain it to be compatible with Synopsys dwmac 4.20a. fix below warning $ make CHECK_DTBS=y rv1126-edgeble-neu2-io.dtb arch/arm/boot/dts/rv1126-edgeble-neu2-io.dtb: ethernet@ffc40000: compatible: 'oneOf' conditional failed, one must be fixed: ['rockchip,rv1126-gmac', 'snps,dwmac-4.20a'] is too long 'rockchip,rv1126-gmac' is not one of ['rockchip,rk3568-gmac', 'rockchip,rk3588-gmac'] Fixes: b36fe2f4 ("dt-bindings: net: rockchip-dwmac: add rv1126 compatible") Reviewed-by:Jagan Teki <jagan@edgeble.ai> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Anand Moon <anand@edgeble.ai> Link: https://lore.kernel.org/r/20230111172437.5295-1-anand@edgeble.aiSigned-off-by:
-
- 13 Jan, 2023 11 commits
-
-
Yunhui Cui authored
Add 2 tracepoints to monitor the tcp/udp traffic of per process and per cgroup. Regarding monitoring the tcp/udp traffic of each process, there are two existing solutions, the first one is https://www.atoptool.nl/netatop.php. The second is via kprobe/kretprobe. Netatop solution is implemented by registering the hook function at the hook point provided by the netfilter framework. These hook functions may be in the soft interrupt context and cannot directly obtain the pid. Some data structures are added to bind packets and processes. For example, struct taskinfobucket, struct taskinfo ... Every time the process sends and receives packets it needs multiple hashmaps,resulting in low performance and it has the problem fo inaccurate tcp/udp traffic statistics(for example: multiple threads share sockets). We can obtain the information with kretprobe, but as we know, kprobe gets the result by trappig in an exception, which loses performance compared to tracepoint. We compared the performance of tracepoints with the above two methods, and the results are as follows: ab -n 1000000 -c 1000 -r http://127.0.0.1/index.html without trace: Time per request: 39.660 [ms] (mean) Time per request: 0.040 [ms] (mean, across all concurrent requests) netatop: Time per request: 50.717 [ms] (mean) Time per request: 0.051 [ms] (mean, across all concurrent requests) kr: Time per request: 43.168 [ms] (mean) Time per request: 0.043 [ms] (mean, across all concurrent requests) tracepoint: Time per request: 41.004 [ms] (mean) Time per request: 0.041 [ms] (mean, across all concurrent requests It can be seen that tracepoint has better performance. Signed-off-by:
Yunhui Cui <cuiyunhui@bytedance.com> Signed-off-by:
Xiongchun Duan <duanxiongchun@bytedance.com> Reviewed-by:
Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by:
-
David S. Miller authored
Daniele Palmas says: ==================== net: add tx packets aggregation to ethtool and rmnet Hello maintainers and all, this patchset implements tx qmap packets aggregation in rmnet and generic ethtool support for that. Some low-cat Thread-x based modems are not capable of properly reaching the maximum allowed throughput both in tx and rx during a bidirectional test if tx packets aggregation is not enabled. I verified this problem with rmnet + qmi_wwan by using a MDM9207 Cat. 4 based modem (50Mbps/150Mbps max throughput). What is actually happening is pictured at https://drive.google.com/file/d/1gSbozrtd9h0X63i6vdkNpN68d-9sg8f9/view Testing with iperf TCP, when rx and tx flows are tested singularly there's no issue in tx and minor issues in rx (not able to reach max throughput). When there are concurrent tx and rx flows, tx throughput has an huge drop. rx a minor one, but still present. The same scenario with tx aggregation enabled is pictured at https://drive.google.com/file/d/1jcVIKNZD7K3lHtwKE5W02mpaloudYYih/view showing a regular graph. This issue does not happen with high-cat modems (e.g. SDX20), or at least it does not happen at the throughputs I'm able to test currently: maybe the same could happen when moving close to the maximum rates supported by those modems. Anyway, having the tx aggregation enabled should not hurt. The first attempt to solve this issue was in qmi_wwan qmap implementation, see the discussion at https://lore.kernel.org/netdev/20221019132503.6783-1-dnlplm@gmail.com/ However, it turned out that rmnet was a better candidate for the implementation. Moreover, Greg and Jakub suggested also to use ethtool for the configuration: not sure if I got their advice right, but this patchset add also generic ethtool support for tx aggregation. The patches have been tested mainly against an MDM9207 based modem through USB and SDX55 through PCI (MHI). v2 should address the comments highlighted in the review: the implementation is still in rmnet, due to Subash's request of keeping tx aggregation there. v3 fixes ethtool-netlink.rst content out of table bounds and a W=1 build warning for patch 2. v4 solves a race related to egress_agg_params. ==================== Signed-off-by:
-
Daniele Palmas authored
Add support for ETHTOOL_COALESCE_TX_AGGR for configuring the tx aggregation settings. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
-
Daniele Palmas authored
Add tx packets aggregation. Bidirectional TCP throughput tests through iperf with low-cat Thread-x based modems revelead performance issues both in tx and rx. The Windows driver does not show this issue: inspecting USB packets revealed that the only notable change is the driver enabling tx packets aggregation. Tx packets aggregation is by default disabled and can be enabled by increasing the value of ETHTOOL_A_COALESCE_TX_MAX_AGGR_FRAMES. The maximum aggregated size is by default set to a reasonably low value in order to support the majority of modems. This implementation is based on patches available in Code Aurora repositories (msm kernel) whose main authors are Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Sean Tranchetti <stranche@codeaurora.org> Signed-off-by:
Subash Abhinov Kasiviswanathan <quic_subashab@quicinc.com> Signed-off-by:
-
Daniele Palmas authored
Add the following ethtool tx aggregation parameters: ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES Maximum size in bytes of a tx aggregated block of frames. ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES Maximum number of frames that can be aggregated into a block. ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS Time in usecs after the first packet arrival in an aggregated block for the block to be sent. Signed-off-by:
-
David S. Miller authored
Arun Ramadoss says: ==================== net: dsa: microchip: add PTP support for KSZ9563/KSZ8563 and LAN937x KSZ9563/KSZ8563 and LAN937x switch are capable for supporting IEEE 1588 PTP protocol. LAN937x has the same PTP register set similar to KSZ9563, hence the implementation has been made common for the KSZ switches. KSZ9563 does not support two step timestamping but LAN937x supports both. Tested the 1step & 2step p2p timestamping in LAN937x and p2p1step timestamping in KSZ9563. This patch series is based on the Christian Eggers PTP support for KSZ9563. Applied the Christian patch and updated as per the latest refactoring of KSZ series code. The features added on top are PTP packet Interrupt implementation based on nested handler, LAN937x two step timestamping and programmable per_out pins. Link: https://www.spinics.net/lists/netdev/msg705531.html Patch v7 -> v8 - set skb->ip_summed = CHECKSUM_NONE after updating the checksum Patch v6 -> v7 - Corrected the misplaced spaces and tabs - Added mutex lock in do_aux_work - Replaced 0/1 with false/true for ts_en - SKB_TX_INPROGRESS flag is set before dsa_enqueue_skb - Removed the fallthrough keyword - pdelay_resp header correction is performed based on KSZ_SKB_CB(skb)->update_correction instead of clone Patch v5 -> v6 - Rebased to latest net-next and renamed from RFC to patch net-next. Patch v4 -> v5 - Replaced irq_domain_add_simple with irq_doamin_add_linear - Used the helper diff_by_scaled_ppm() for adjfine. Patch v3 -> v4 - removed IRQF_TRIGGER_FALLING from the request_threaded_irq of ptp msg - addressed review comments on patch 10 periodic output - added sign off in patch 6 & 9 - reverted to set PTP_1STEP bit for lan937x which is missed during v3 regression Patch v2-> v3 - used port_rxtstamp for reconstructing the absolute timestamp instead of tagger function pointer. - Reverted to setting of 802.1As bit. Patch v1 -> v2 - GPIO perout enable bit is different for LAN937x and KSZ9x. Added new patch for configuring LAN937x programmable pins. - PTP enabled in hardware based on both tx and rx timestamping of all the user ports. - Replaced setting of 802.1AS bit with P2P bit in PTP_MSG_CONF1 register. RFC v2 -> Patch v1 - Changed the patch author based on past patch submission - Changed the commit message prefix as net: dsa: microchip: ptp Individual patch changes are listed in correspondig commits. RFC v1 -> v2 - Added the p2p1step timestamping and conditional execution of 2 step for LAN937x only. - Added the periodic output support ==================== Signed-off-by:
-
Arun Ramadoss authored
There is difference in implementation of per_out pins between KSZ9563 and LAN937x. In KSZ9563, Timestamping control register (0x052C) bit 6, if 1 - timestamp input and 0 - trigger output. But it is opposite for LAN937x 1 - trigger output and 0 - timestamp input. As per per_out gpio pins, KSZ9563 has four Led pins and two dedicated gpio pins. But in LAN937x dedicated gpio pins are removed instead there are up to 10 LED pins out of which LED_0 and LED_1 can be mapped to PTP tou 0, 1 or 2. This patch sets the bit 6 in 0x052C register and configure the LED override and source register for LAN937x series of switches alone. Signed-off-by:
Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by:
-
Arun Ramadoss authored
LAN937x series of switches support 2 step timestamping mechanism. There are timestamp correction calculation performed in ksz_rcv_timestamp and ksz_xmit_timestamp which are applicable only for p2p1step. To check whether the 2 step is enabled or not in tag_ksz.c introduced the helper function in taggger_data to query it from ksz_ptp.c. Based on whether 2 step is enabled or not, timestamp calculation are performed. Signed-off-by:
-
Arun Ramadoss authored
There are two programmable pins available for Trigger output unit to generate periodic pulses. This patch add verify_pin for the available 2 pins and configure it with respect to GPIO index for the TOU unit. Tested using testptp ./testptp -i 0 -L 0,2 ./testptp -i 0 -d /dev/ptp0 -p 1000000000 ./testptp -i 1 -L 1,2 ./testptp -i 1 -d /dev/ptp0 -p 100000000 Signed-off-by:
-
Christian Eggers authored
LAN937x and KSZ PTP supported switches has Three Trigger output unit. This TOU can used to generate the periodic signal for PTP. TOU has the cycle width register of 32 bit in size and period width register of 24 bit, each value is of 8ns so the pulse width can be maximum 125ms. Tested using ./testptp -d /dev/ptp0 -p 1000000000 -w 100000000 for generating the 10ms pulse width Signed-off-by:
Christian Eggers <ceggers@arri.de> Co-developed-by:
-
Christian Eggers authored
For PDelay_Resp messages we will likely have a negative value in the correction field. The switch hardware cannot correctly update such values (produces an off by one error in the UDP checksum), so it must be moved to the time stamp field in the tail tag. Format of the correction field is 48 bit ns + 16 bit fractional ns. After updating the correction field, clone is no longer required hence it is freed. Signed-off-by:
-
