- 02 Feb, 2023 32 commits
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Geert Uytterhoeven authored
On R-Car Gen4 CAN_FD variants, the Common FIFO TX Message Buffer Link (CFTML) field in the Common FIFO Configuration / Control Register (CCFC) register is one bit wider than on older variants. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/all/9c37aaa799a2391be272dbaa474379cf9a7af147.1674499048.git.geert+renesas@glider.beSigned-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Geert Uytterhoeven authored
On R-Car Gen4 CAN_FD variants, the Data Bit Rate Resynchronization Jump Width Control (DSJW) field in the Channel n Data Bitrate Configuration Register (DCFG) register is one bit wider than on older variants. Signed-off-by:
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Geert Uytterhoeven authored
Despite the name, R-Car V3U (R8A779A0) was the first member of the R-Car Gen4 family. Generalize the support for R-Car V3U to other SoCs in the R-Car Gen4 family by adding a family-specific compatible value, and by replacing all references to "V3U" by "Gen4". Signed-off-by:
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Geert Uytterhoeven authored
Abstract the different addresses for the Channel n Data Bitrate Configuration Register (DCFG) in the definition of the register macro, like is already done for other register definitions, to simplify code accessing this register. Signed-off-by:
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Geert Uytterhoeven authored
Each Global Acceptance Filter List Configuration Register (GAFLCFG) contains two fields, and stores the number of channel rules for one channel pair. As R-Car V3U and later can have more than 2 channels, the field selection should be based on the LSB (even or odd) of the channel number, instead of on the full channel number. Fixes: 45721c40 ("can: rcar_canfd: Add support for r8a779a0 SoC") Signed-off-by:
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Geert Uytterhoeven authored
When adding support for R-Car V3U, the Global FD Configuration register (CFDGFDCFG) and the Channel-specific CAN-FD Configuration Registers (CFDCmFDCFG) were mixed up. Use the correct register, and apply the selected CAN mode to all available channels. Annotate the corresponding register bits, to make it clear they do not exist on older variants. Fixes: 45721c40 ("can: rcar_canfd: Add support for r8a779a0 SoC") Signed-off-by:
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Geert Uytterhoeven authored
Add support for describing CAN transceivers as PHYs. While simple CAN transceivers can do without, this is needed for CAN transceivers like NXP TJR1443 that need a configuration step (like pulling standby or enable lines), and/or impose a bitrate limit. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/all/1bd328b5c9c6cfa633b42af87550f4c7358a05c1.1674499048.git.geert+renesas@glider.beSigned-off-by:
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Geert Uytterhoeven authored
Document support for the CAN-FD Interface on the Renesas R-Car V4H (R8A779G0) SoC. Signed-off-by:
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Geert Uytterhoeven authored
Despite the name, R-Car V3U is the first member of the R-Car Gen4 family. Hence generalize this by introducing a family-specific compatible value for R-Car Gen4. While at it, replace "both channels" by "all channels", as the numbers of channels may differ from two. Signed-off-by:
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Thomas Kopp authored
For CRC transfers with size 1 it is more efficient to use the write_safe command instead of the write_crc command. This saves the length byte on the SPI transfer. changes since v1: https://lore.kernel.org/all/20230127124258.2764-1-thomas.kopp@microchip.com - change logic to remove 1 level of indention Link: https://lore.kernel.org/all/20230202141811.2581795-1-mkl@pengutronix.deSigned-off-by:
Thomas Kopp <thomas.kopp@microchip.com> Signed-off-by:
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Oliver Hartkopp authored
Add missing check to block non-AF_CAN binds. Syzbot created some code which matched the right sockaddr struct size but used AF_XDP (0x2C) instead of AF_CAN (0x1D) in the address family field: bind$xdp(r2, &(0x7f0000000540)={0x2c, 0x0, r4, 0x0, r2}, 0x10) ^^^^ This has no funtional impact but the userspace should be notified about the wrong address family field content. Link: https://syzkaller.appspot.com/text?tag=CrashLog&x=11ff9d8c480000 Reported-by: syzbot+5aed6c3aaba661f5b917@syzkaller.appspotmail.com Signed-off-by:Oliver Hartkopp <socketcan@hartkopp.net> Link: https://lore.kernel.org/all/20230104201844.13168-1-socketcan@hartkopp.netSigned-off-by:
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Oliver Hartkopp authored
To send CAN traffic back to the incoming interface a special flag has to be set. When creating a routing job for identical interfaces without this flag the rule is created but has no effect. This patch adds an error return value in the case that the CAN interfaces are identical but the CGW_FLAGS_CAN_IIF_TX_OK flag was not set. Reported-by:
Jannik Hartung <jannik.hartung@tu-bs.de> Signed-off-by:
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Sunil Goutham authored
NPC exact match feature is supported only on one silicon variant, removed debug messages which print that this feature is not available on all other silicon variants. Signed-off-by:
Sunil Goutham <sgoutham@marvell.com> Signed-off-by:
Ratheesh Kannoth <rkannoth@marvell.com> Reviewed-by:
Leon Romanovsky <leonro@nvidia.com> Link: https://lore.kernel.org/r/20230201040301.1034843-1-rkannoth@marvell.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Heng Qi authored
When the single-buffer xdp is loaded and after xdp_linearize_page() is called, *num_buf becomes 0 and (*num_buf - 1) may overflow into a large integer in virtnet_build_xdp_buff_mrg(), resulting in unexpected packet dropping. Fixes: ef75cb51 ("virtio-net: build xdp_buff with multi buffers") Signed-off-by:
Heng Qi <hengqi@linux.alibaba.com> Reviewed-by:
Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/r/20230131085004.98687-1-hengqi@linux.alibaba.comSigned-off-by:
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Leon Romanovsky authored
In netdev common pattern, extack pointer is forwarded to the drivers to be filled with error message. However, the caller can easily overwrite the filled message. Instead of adding multiple "if (!extack->_msg)" checks before any NL_SET_ERR_MSG() call, which appears after call to the driver, let's add new macro to common code. [1] https://lore.kernel.org/all/Y9Irgrgf3uxOjwUm@unrealReviewed-by:
Simon Horman <simon.horman@corigine.com> Reviewed-by:
Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by:
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Brian Haley authored
When set to zero, the neighbor sysctl proxy_delay value does not cause an immediate reply for ARP/ND requests as expected, it instead causes a random delay between [0, U32_MAX). Looking at this comment from __get_random_u32_below() explains the reason: /* * This function is technically undefined for ceil == 0, and in fact * for the non-underscored constant version in the header, we build bug * on that. But for the non-constant case, it's convenient to have that * evaluate to being a straight call to get_random_u32(), so that * get_random_u32_inclusive() can work over its whole range without * undefined behavior. */ Added helper function that does not call get_random_u32_below() if proxy_delay is zero and just uses the current value of jiffies instead, causing pneigh_enqueue() to respond immediately. Also added definition of proxy_delay to ip-sysctl.txt since it was missing. Signed-off-by:
Brian Haley <haleyb.dev@gmail.com> Link: https://lore.kernel.org/r/20230130171428.367111-1-haleyb.dev@gmail.comSigned-off-by:
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Jakub Kicinski authored
Xin Long says: ==================== net: support ipv4 big tcp This is similar to the BIG TCP patchset added by Eric for IPv6: https://lwn.net/Articles/895398/ Different from IPv6, IPv4 tot_len is 16-bit long only, and IPv4 header doesn't have exthdrs(options) for the BIG TCP packets' length. To make it simple, as David and Paolo suggested, we set IPv4 tot_len to 0 to indicate this might be a BIG TCP packet and use skb->len as the real IPv4 total length. This will work safely, as all BIG TCP packets are GSO/GRO packets and processed on the same host as they were created; There is no padding in GSO/GRO packets, and skb->len - network_offset is exactly the IPv4 packet total length; Also, before implementing the feature, all those places that may get iph tot_len from BIG TCP packets are taken care with some new APIs: Patch 1 adds some APIs for iph tot_len setting and getting, which are used in all these places where IPv4 BIG TCP packets may reach in Patch 2-7, Patch 8 adds a GSO_TCP tp_status for af_packet users, and Patch 9 add new netlink attributes to make IPv4 BIG TCP independent from IPv6 BIG TCP on configuration, and Patch 10 implements this feature. Note that the similar change as in Patch 2-6 are also needed for IPv6 BIG TCP packets, and will be addressed in another patchset. The similar performance test is done for IPv4 BIG TCP with 25Gbit NIC and 1.5K MTU: No BIG TCP: for i in {1..10}; do netperf -t TCP_RR -H 192.168.100.1 -- -r80000,80000 -O MIN_LATENCY,P90_LATENCY,P99_LATENCY,THROUGHPUT|tail -1; done 168 322 337 3776.49 143 236 277 4654.67 128 258 288 4772.83 171 229 278 4645.77 175 228 243 4678.93 149 239 279 4599.86 164 234 268 4606.94 155 276 289 4235.82 180 255 268 4418.95 168 241 249 4417.82 Enable BIG TCP: ip link set dev ens1f0np0 gro_ipv4_max_size 128000 gso_ipv4_max_size 128000 for i in {1..10}; do netperf -t TCP_RR -H 192.168.100.1 -- -r80000,80000 -O MIN_LATENCY,P90_LATENCY,P99_LATENCY,THROUGHPUT|tail -1; done 161 241 252 4821.73 174 205 217 5098.28 167 208 220 5001.43 164 228 249 4883.98 150 233 249 4914.90 180 233 244 4819.66 154 208 219 5004.92 157 209 247 4999.78 160 218 246 4842.31 174 206 217 5080.99 Thanks for the feedback from Eric and David Ahern. ==================== Link: https://lore.kernel.org/r/cover.1674921359.git.lucien.xin@gmail.comSigned-off-by:
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Xin Long authored
Similar to Eric's IPv6 BIG TCP, this patch is to enable IPv4 BIG TCP. Firstly, allow sk->sk_gso_max_size to be set to a value greater than GSO_LEGACY_MAX_SIZE by not trimming gso_max_size in sk_trim_gso_size() for IPv4 TCP sockets. Then on TX path, set IP header tot_len to 0 when skb->len > IP_MAX_MTU in __ip_local_out() to allow to send BIG TCP packets, and this implies that skb->len is the length of a IPv4 packet; On RX path, use skb->len as the length of the IPv4 packet when the IP header tot_len is 0 and skb->len > IP_MAX_MTU in ip_rcv_core(). As the API iph_set_totlen() and skb_ip_totlen() are used in __ip_local_out() and ip_rcv_core(), we only need to update these APIs. Also in GRO receive, add the check for ETH_P_IP/IPPROTO_TCP, and allows the merged packet size >= GRO_LEGACY_MAX_SIZE in skb_gro_receive(). In GRO complete, set IP header tot_len to 0 when the merged packet size greater than IP_MAX_MTU in iph_set_totlen() so that it can be processed on RX path. Note that by checking skb_is_gso_tcp() in API iph_totlen(), it makes this implementation safe to use iph->len == 0 indicates IPv4 BIG TCP packets. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Reviewed-by:
David Ahern <dsahern@kernel.org> Reviewed-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Xin Long authored
This patch introduces gso_ipv4_max_size and gro_ipv4_max_size per device and adds netlink attributes for them, so that IPV4 BIG TCP can be guarded by a separate tunable in the next patch. To not break the old application using "gso/gro_max_size" for IPv4 GSO packets, this patch updates "gso/gro_ipv4_max_size" in netif_set_gso/gro_max_size() if the new size isn't greater than GSO_LEGACY_MAX_SIZE, so that nothing will change even if userspace doesn't realize the new netlink attributes. Signed-off-by:
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Xin Long authored
Introduce TP_STATUS_GSO_TCP tp_status flag to tell the af_packet user that this is a TCP GSO packet. When parsing IPv4 BIG TCP packets in tcpdump/libpcap, it can use tp_len as the IPv4 packet len when this flag is set, as iph tot_len is set to 0 for IPv4 BIG TCP packets. Signed-off-by:
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Xin Long authored
ipvlan devices calls netif_inherit_tso_max() to get the tso_max_size/segs from the lower device, so when lower device supports BIG TCP, the ipvlan devices support it too. We also should consider its iph tot_len accessing. Signed-off-by:
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Xin Long authored
It may process IPv4 TCP GSO packets in cipso_v4_skbuff_setattr(), so the iph->tot_len update should use iph_set_totlen(). Note that for these non GSO packets, the new iph tot_len with extra iph option len added may become greater than 65535, the old process will cast it and set iph->tot_len to it, which is a bug. In theory, iph options shouldn't be added for these big packets in here, a fix may be needed here in the future. For now this patch is only to set iph->tot_len to 0 when it happens. Signed-off-by:
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Xin Long authored
There are also quite some places in netfilter that may process IPv4 TCP GSO packets, we need to replace them too. In length_mt(), we have to use u_int32_t/int to accept skb_ip_totlen() return value, otherwise it may overflow and mismatch. This change will also help us add selftest for IPv4 BIG TCP in the following patch. Note that we don't need to replace the one in tcpmss_tg4(), as it will return if there is data after tcphdr in tcpmss_mangle_packet(). The same in mangle_contents() in nf_nat_helper.c, it returns false when skb->len + extra > 65535 in enlarge_skb(). Signed-off-by:
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Xin Long authored
There are 1 action and 1 qdisc that may process IPv4 TCP GSO packets and access iph->tot_len, replace them with skb_ip_totlen() and iph_totlen() accordingly. Note that we don't need to replace the one in tcf_csum_ipv4(), as it will return for TCP GSO packets in tcf_csum_ipv4_tcp(). Signed-off-by:
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Xin Long authored
IPv4 GSO packets may get processed in ovs_skb_network_trim(), and we need to use skb_ip_totlen() to get iph totlen. Signed-off-by:
Aaron Conole <aconole@redhat.com> Reviewed-by:
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Xin Long authored
These 3 places in bridge netfilter are called on RX path after GRO and IPv4 TCP GSO packets may come through, so replace iph tot_len accessing with skb_ip_totlen() in there. Signed-off-by:
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Xin Long authored
This patch adds three APIs to replace the iph->tot_len setting and getting in all places where IPv4 BIG TCP packets may reach, they will be used in the following patches. Note that iph_totlen() will be used when iph is not in linear data of the skb. Signed-off-by:
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Jakub Kicinski authored
Laurent Vivier says: ==================== virtio_net: vdpa: update MAC address when it is generated by virtio-net When the MAC address is not provided by the vdpa device virtio_net driver assigns a random one without notifying the device. The consequence, in the case of mlx5_vdpa, is the internal routing tables of the device are not updated and this can block the communication between two namespaces. To fix this problem, use virtnet_send_command(VIRTIO_NET_CTRL_MAC) to set the address from virtnet_probe() when the MAC address is not provided by the device. ==================== Link: https://lore.kernel.org/r/20230127204500.51930-1-lvivier@redhat.comSigned-off-by:
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Laurent Vivier authored
In virtnet_probe(), if the device doesn't provide a MAC address the driver assigns a random one. As we modify the MAC address we need to notify the device to allow it to update all the related information. The problem can be seen with vDPA and mlx5_vdpa driver as it doesn't assign a MAC address by default. The virtio_net device uses a random MAC address (we can see it with "ip link"), but we can't ping a net namespace from another one using the virtio-vdpa device because the new MAC address has not been provided to the hardware: RX packets are dropped since they don't go through the receive filters, TX packets go through unaffected. Signed-off-by:
Laurent Vivier <lvivier@redhat.com> Acked-by:
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Laurent Vivier authored
failover relies on the MAC address to pair the primary and the standby devices: "[...] the hypervisor needs to enable VIRTIO_NET_F_STANDBY feature on the virtio-net interface and assign the same MAC address to both virtio-net and VF interfaces." Documentation/networking/net_failover.rst This patch disables the STANDBY feature if the MAC address is not provided by the hypervisor. Signed-off-by:
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Huayu Chen authored
This patch corrects two oversights relating to releasing resources and DCB initialisation. 1. If mapping of the dcbcfg_tbl area fails: an error should be propagated, allowing partial initialisation (probe) to be unwound. 2. Conversely, if where dcbcfg_tbl is successfully mapped: it should be unmapped in nfp_nic_dcb_clean() which is called via various error cleanup paths, and shutdown or removal of the PCIE device. Fixes: 9b7fe804 ("nfp: add DCB IEEE support") Signed-off-by:
Huayu Chen <huayu.chen@corigine.com> Reviewed-by:
Niklas Söderlund <niklas.soderlund@corigine.com> Signed-off-by:
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Jiapeng Chong authored
Swap is a function interface that provides exchange function. To avoid code duplication, we can use swap function. ./net/ipv6/icmp.c:344:25-26: WARNING opportunity for swap(). Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3896Signed-off-by:
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Reviewed-by:
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- 01 Feb, 2023 8 commits
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Jakub Kicinski authored
Jiri Pirko says: ==================== devlink: trivial names cleanup This is a follow-up to Jakub's devlink code split and dump iteration helper patchset. No functional changes, just couple of renames to makes things consistent and perhaps easier to follow. ==================== Link: https://lore.kernel.org/r/20230131090613.2131740-1-jiri@resnulli.usSigned-off-by:
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Jiri Pirko authored
In order to maintain naming consistency, rename and reorder all usages of struct struct devlink_cmd in the following way: 1) Remove "gen" and replace it with "cmd" to match the struct name 2) Order devl_cmds[] and the header file to match the order of enum devlink_command 3) Move devl_cmd_rate_get among the peers 4) Remove "inst" for DEVLINK_CMD_GET 5) Add "_get" suffix to all to match DEVLINK_CMD_*_GET (only rate had it done correctly) Signed-off-by:
Jiri Pirko <jiri@nvidia.com> Reviewed-by:
Jacob Keller <jacob.e.keller@intel.com> Signed-off-by:
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Jiri Pirko authored
No need to have "gen" inside name of the structure for devlink commands. Remove it. Signed-off-by:
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Jiri Pirko authored
To have the name of the function consistent with the struct cb name, rename devlink_nl_instance_iter_dump() to devlink_nl_instance_iter_dumpit(). Signed-off-by:
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Jakub Kicinski authored
Alex Elder says: ==================== net: ipa: remaining IPA v5.0 support This series includes almost all remaining IPA code changes required to support IPA v5.0. IPA register definitions and configuration data for IPA v5.0 will be sent later (soon). Note that the GSI register definitions still require work. GSI for IPA v5.0 supports up to 256 (rather than 32) channels, and this changes the way GSI register offsets are calculated. A few GSI register fields also change. The first patch in this series increases the number of IPA endpoints supported by the driver, from 32 to 36. The next updates the width of the destination field for the IP_PACKET_INIT immediate command so it can represent up to 256 endpoints rather than just 32. The next adds a few definitions of some IPA registers and fields that are first available in IPA v5.0. The next two patches update the code that handles router and filter table caches. Previously these were referred to as "hashed" tables, and the IPv4 and IPv6 tables are now combined into one "unified" table. The sixth and seventh patches add support for a new pulse generator, which allows time periods to be specified with a wider range of clock resolution. And the last patch just defines two new memory regions that were not previously used. ==================== Link: https://lore.kernel.org/r/20230130210158.4126129-1-elder@linaro.orgSigned-off-by:
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Alex Elder authored
IPA v5.0 uses two memory regions not previously used. Define them and treat them as valid only for IPA v5.0. Signed-off-by:
Alex Elder <elder@linaro.org> Reviewed-by:
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Alex Elder authored
The AP has third pulse generator available starting with IPA v5.0. Redefine ipa_qtime_val() to support that possibility. Pass the IPA pointer as an argument so the version can be determined. And stop using the sign of the returned tick count to indicate which of two pulse generators to use. Instead, have the caller provide the address of a variable that will hold the selected pulse generator for the Qtime value. And for version 5.0, check whether the third pulse generator best represents the time period. Add code in ipa_qtime_config() to configure the fourth pulse generator for IPA v5.0+; in that case configure both the third and fourth pulse generators to use 10 msec granularity. Consistently use "ticks" for local variables that represent a tick count. Signed-off-by:
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Alex Elder authored
Starting with IPA v5.0, the head-of-line blocking timer has more than two pulse generators available to define timer granularity. To prepare for that, change the way the field value is encoded to use ipa_reg_encode() rather than ipa_reg_bit(). The aggregation granularity selection could (in principle) also use an additional pulse generator starting with IPA v5.0. Encode the AGGR_GRAN_SEL field differently to allow that as well. Signed-off-by:
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