- 24 Mar, 2021 40 commits
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Bhaskar Chowdhury authored
s/preceeds/precedes/ .....two different places s/rsponse/response/ s/cetain/certain/ s/precison/precision/ Fix a sentence construction as per suggestion. Signed-off-by:
Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Pablo Neira Ayuso says: ==================== netfilter: flowtable enhancements [ This is v2 that includes documentation enhancements, including existing limitations. This is a rebase on top on net-next. ] The following patchset augments the Netfilter flowtable fastpath to support for network topologies that combine IP forwarding, bridge, classic VLAN devices, bridge VLAN filtering, DSA and PPPoE. This includes support for the flowtable software and hardware datapaths. The following pictures provides an example scenario: fast path! .------------------------. / \ | IP forwarding | | / \ \/ | br0 wan ..... eth0 . / \ host C -> veth1 veth2 . switch/router . . eth0 host A The bridge master device 'br0' has an IP address and a DHCP server is also assumed to be running to provide connectivity to host A which reaches the Internet through 'br0' as default gateway. Then, packet enters the IP forwarding path and Netfilter is used to NAT the packets before they leave through the wan device. The general idea is to accelerate forwarding by building a fast path that takes packets from the ingress path of the bridge port and place them in the egress path of the wan device (and vice versa). Hence, skipping the classic bridge and IP stack paths. ** Patch from #1 to #6 add the infrastructure which describes the list of netdevice hops to reach a given destination MAC address in the local network topology. Patch #1 adds dev_fill_forward_path() and .ndo_fill_forward_path() to netdev_ops. Patch #2 adds .ndo_fill_forward_path for vlan devices, which provides the next device hop via vlan->real_dev, the vlan ID and the protocol. Patch #3 adds .ndo_fill_forward_path for bridge devices, which allows to make lookups to the FDB to locate the next device hop (bridge port) in the forwarding path. Patch #4 extends bridge .ndo_fill_forward_path to support for bridge VLAN filtering. Patch #5 adds .ndo_fill_forward_path for PPPoE devices. Patch #6 adds .ndo_fill_forward_path for DSA. Patches from #7 to #14 update the flowtable software datapath: Patch #7 adds the transmit path type field to the flow tuple. Two transmit paths are supported so far: the neighbour and the xfrm transmit paths. Patch #8 and #9 update the flowtable datapath to use dev_fill_forward_path() to obtain the real ingress/egress device for the flowtable datapath. This adds the new ethernet xmit direct path to the flowtable. Patch #10 adds native flowtable VLAN support (up to 2 VLAN tags) through dev_fill_forward_path(). The flowtable stores the VLAN id and protocol in the flow tuple. Patch #11 adds native flowtable bridge VLAN filter support through dev_fill_forward_path(). Patch #12 adds native flowtable bridge PPPoE through dev_fill_forward_path(). Patch #13 adds DSA support through dev_fill_forward_path(). Patch #14 extends flowtable selftests to cover for flowtable software datapath enhancements. ** Patches from #15 to #20 update the flowtable hardware offload datapath: Patch #15 extends the flowtable hardware offload to support for the direct ethernet xmit path. This also includes VLAN support. Patch #16 stores the egress real device in the flow tuple. The software flowtable datapath uses dev_hard_header() to transmit packets, hence it might refer to VLAN/DSA/PPPoE software device, not the real ethernet device. Patch #17 deals with switchdev PVID hardware offload to skip it on egress. Patch #18 adds FLOW_ACTION_PPPOE_PUSH to the flow_offload action API. Patch #19 extends the flowtable hardware offload to support for PPPoE Patch #20 adds TC_SETUP_FT support for DSA. ** Patches from #20 to #23: Felix Fietkau adds a new driver which support hardware offload for the mtk PPE engine through the existing flow offload API which supports for the flowtable enhancements coming in this batch. Patch #24 extends the documentation and describe existing limitations. Please, apply, thanks. ==================== Signed-off-by: -
Pablo Neira Ayuso authored
This patch updates the flowtable documentation to describe recent enhancements: - Offload action is available after the first packets go through the classic forwarding path. - IPv4 and IPv6 are supported. Only TCP and UDP layer 4 are supported at this stage. - Tuple has been augmented to track VLAN id and PPPoE session id. - Bridge and IP forwarding integration, including bridge VLAN filtering support. - Hardware offload support. - Describe the [OFFLOAD] and [HW_OFFLOAD] tags in the conntrack table listing. - Replace 'flow offload' by 'flow add' in example rulesets (preferred syntax). - Describe existing cache limitations. Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
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Felix Fietkau authored
This adds support for offloading IPv4 routed flows, including SNAT/DNAT, one VLAN, PPPoE and DSA. Signed-off-by:
Felix Fietkau <nbd@nbd.name> Signed-off-by:
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Felix Fietkau authored
The PPE (packet processing engine) is used to offload NAT/routed or even bridged flows. This patch brings up the PPE and uses it to get a packet hash. It also contains some functionality that will be used to bring up flow offloading. Signed-off-by:
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Felix Fietkau authored
When using DSA, set the special tag in GDM ingress control to allow the MAC to parse packets properly earlier. This affects rx DMA source port reporting. Signed-off-by:
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Pablo Neira Ayuso authored
The dsa infrastructure provides a well-defined hierarchy of devices, pass up the call to set up the flow block to the master device. From the software dataplane, the netfilter infrastructure uses the dsa slave devices to refer to the input and output device for the given skbuff. Similarly, the flowtable definition in the ruleset refers to the dsa slave port devices. This patch adds the glue code to call ndo_setup_tc with TC_SETUP_FT with the master device via the dsa slave devices. Signed-off-by:
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Pablo Neira Ayuso authored
Add a PPPoE push action if layer 2 protocol is ETH_P_PPP_SES to add PPPoE flowtable hardware offload support. Signed-off-by:
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Pablo Neira Ayuso authored
Add an action to represent the PPPoE hardware offload support that includes the session ID. Signed-off-by:
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Felix Fietkau authored
The switch might have already added the VLAN tag through PVID hardware offload. Keep this extra VLAN in the flowtable but skip it on egress. Signed-off-by:
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Pablo Neira Ayuso authored
If there is a forward path to reach an ethernet device and hardware offload is enabled, then use the direct xmit path. Moreover, store the real device in the direct xmit path info since software datapath uses dev_hard_header() to push the layer encapsulation headers while hardware offload refers to the real device. Signed-off-by:
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Pablo Neira Ayuso authored
When the flow tuple xmit_type is set to FLOW_OFFLOAD_XMIT_DIRECT, the dst_cache pointer is not valid, and the h_source/h_dest/ifidx out fields need to be used. This patch also adds the FLOW_ACTION_VLAN_PUSH action to pass the VLAN tag to the driver. Signed-off-by:
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Pablo Neira Ayuso authored
This patch adds two new tests to cover bridge and vlan support: - Add a bridge device to the Router1 (nsr1) container and attach the veth0 device to the bridge. Set the IP address to the bridge device to exercise the bridge forwarding path. - Add vlan encapsulation between to the bridge device in the Router1 and one of the sender containers (ns1). Signed-off-by:
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Pablo Neira Ayuso authored
Replace the master ethernet device by the dsa slave port. Packets coming in from the software ingress path use the dsa slave port as input device. Signed-off-by:
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Pablo Neira Ayuso authored
Add the PPPoE protocol and session id to the flow tuple using the encap fields to uniquely identify flows from the receive path. For the transmit path, dev_hard_header() on the vlan device push the headers. Signed-off-by:
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Pablo Neira Ayuso authored
Add the vlan tag based when PVID is set on. Signed-off-by:
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Pablo Neira Ayuso authored
Add the vlan id and protocol to the flow tuple to uniquely identify flows from the receive path. For the transmit path, dev_hard_header() on the vlan device push the headers. This patch includes support for two vlan headers (QinQ) from the ingress path. Add a generic encap field to the flowtable entry which stores the protocol and the tag id. This allows to reuse these fields in the PPPoE support coming in a later patch. Signed-off-by:
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Pablo Neira Ayuso authored
The egress device in the tuple is obtained from route. Use dev_fill_forward_path() instead to provide the real egress device for this flow whenever this is available. The new FLOW_OFFLOAD_XMIT_DIRECT type uses dev_queue_xmit() to transmit ethernet frames. Cache the source and destination hardware address to use dev_queue_xmit() to transfer packets. The FLOW_OFFLOAD_XMIT_DIRECT replaces FLOW_OFFLOAD_XMIT_NEIGH if dev_fill_forward_path() finds a direct transmit path. In case of topology updates, if peer is moved to different bridge port, the connection will time out, reconnect will result in a new entry with the correct path. Snooping fdb updates would allow for cleaning up stale flowtable entries. Signed-off-by:
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Pablo Neira Ayuso authored
Obtain the ingress device in the tuple from the route in the reply direction. Use dev_fill_forward_path() instead to get the real ingress device for this flow. Fall back to use the ingress device that the IP forwarding route provides if: - dev_fill_forward_path() finds no real ingress device. - the ingress device that is obtained is not part of the flowtable devices. - this route has a xfrm policy. Signed-off-by:
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Pablo Neira Ayuso authored
Add the xmit_type field that defines the two supported xmit paths in the flowtable data plane, which are the neighbour and the xfrm xmit paths. This patch prepares for new flowtable xmit path types to come. Signed-off-by:
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Felix Fietkau authored
Add .ndo_fill_forward_path for dsa slave port devices Signed-off-by:
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Felix Fietkau authored
Pass on the PPPoE session ID, destination hardware address and the real device. Signed-off-by:
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Felix Fietkau authored
Depending on the VLAN settings of the bridge and the port, the bridge can either add or remove a tag. When vlan filtering is enabled, the fdb lookup also needs to know the VLAN tag/proto for the destination address To provide this, keep track of the stack of VLAN tags for the path in the lookup context Signed-off-by:
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Pablo Neira Ayuso authored
Add .ndo_fill_forward_path for bridge devices. Signed-off-by:
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Pablo Neira Ayuso authored
Add .ndo_fill_forward_path for vlan devices. For instance, assuming the following topology: IP forwarding / \ eth0.100 eth0 | eth0 . . . ethX ab:cd:ef:ab:cd:ef For packets going through IP forwarding to eth0.100 whose destination MAC address is ab:cd:ef:ab:cd:ef, dev_fill_forward_path() provides the following path: eth0.100 -> eth0 Signed-off-by: -
Pablo Neira Ayuso authored
This patch adds dev_fill_forward_path() which resolves the path to reach the real netdevice from the IP forwarding side. This function takes as input the netdevice and the destination hardware address and it walks down the devices calling .ndo_fill_forward_path() for each device until the real device is found. For instance, assuming the following topology: IP forwarding / \ br0 eth0 / \ eth1 eth2 . . . ethX ab:cd:ef:ab:cd:ef where eth1 and eth2 are bridge ports and eth0 provides WAN connectivity. ethX is the interface in another box which is connected to the eth1 bridge port. For packets going through IP forwarding to br0 whose destination MAC address is ab:cd:ef:ab:cd:ef, dev_fill_forward_path() provides the following path: br0 -> eth1 .ndo_fill_forward_path for br0 looks up at the FDB for the bridge port from the destination MAC address to get the bridge port eth1. This information allows to create a fast path that bypasses the classic bridge and IP forwarding paths, so packets go directly from the bridge port eth1 to eth0 (wan interface) and vice versa. fast path .------------------------. / \ | IP forwarding | | / \ \/ | br0 eth0 . / \ -> eth1 eth2 . . . ethX ab:cd:ef:ab:cd:ef Signed-off-by: -
Colin Ian King authored
The call to br_vlan_replay_one is returning an error return value but this is not being assigned to err and the following check on err is currently always false because err was initialized to zero. Fix this by assigning err. Addresses-Coverity: ("'Constant' variable guards dead code") Fixes: 22f67cdf ("net: bridge: add helper to replay VLANs installed on port") Signed-off-by:Colin Ian King <colin.king@canonical.com> Reviewed-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by:
Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by:
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David S. Miller authored
Horatiu Vultur says: ==================== bridge: mrp: Disable roles before deleting The first patch in this series make sures that the driver is notified that the role is disabled before the MRP instance is deleted. The second patch uses this so it can simplify the driver. ==================== Signed-off-by: -
Horatiu Vultur authored
Now that the driver will always be notified that the role is deleted before the ring is deleted, then we don't need to duplicate the logic of cleaning the resources also in the delete function. Signed-off-by:
Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by:
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Horatiu Vultur authored
When an MRP instance was created, the driver was notified that the instance is created and then in a different callback about role of the instance. But when the instance was deleted the driver was notified only that the MRP instance is deleted and not also that the role is disabled. This patch make sure that the driver is notified that the role is changed to disabled before the MRP instance is deleted to have similar callbacks with the creating of the instance. In this way it would simplify the logic in the drivers. Signed-off-by:
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David S. Miller authored
Huazhong Tan says: ==================== net: hns: add some cleanups This series includes some cleanups for the HNS ethernet driver. ==================== Signed-off-by: -
Yonglong Liu authored
There are some variables in HNS driver will not being referenced before assigned, so there is no need to init them. Signed-off-by:
Yonglong Liu <liuyonglong@huawei.com> Signed-off-by:
Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by:
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Yonglong Liu authored
The !! operation of variable en in hns_mac_config_sds_loopback_acpi() is redundant, so remove it. Signed-off-by:
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Huazhong Tan authored
HNS_LED_PC_REG is not used and can be removed. Signed-off-by:
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Huazhong Tan authored
NIC_LB_TEST_RX_PKG_ERR is not used and can be removed. Signed-off-by:
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Huazhong Tan authored
Since config_half_duplex() in struct mac_driver is unused, so remove it. Signed-off-by:
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Huazhong Tan authored
Since set_rx_ignore_pause_frames() in struct mac_driver is unused, so remove it. Signed-off-by:
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Huazhong Tan authored
Since set_autoneg() in struct hnae_ae_ops is unused, so remove it. Signed-off-by:
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Huazhong Tan authored
Since get_autoneg() in struct hnae_ae_ops is unused, so remove it. Signed-off-by:
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Dmitry Vyukov authored
netdev_wait_allrefs() issues a warning if refcount does not drop to 0 after 10 seconds. While 10 second wait generally should not happen under normal workload in normal environment, it seems to fire falsely very often during fuzzing and/or in qemu emulation (~10x slower). At least it's not possible to understand if it's really a false positive or not. Automated testing generally bumps all timeouts to very high values to avoid flake failures. Add net.core.netdev_unregister_timeout_secs sysctl to make the timeout configurable for automated testing systems. Lowering the timeout may also be useful for e.g. manual bisection. The default value matches the current behavior. Signed-off-by:
Dmitry Vyukov <dvyukov@google.com> Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=211877 Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by:
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