linux-dev/drivers/net/dsa/sja1105, branch linus/master

net: dsa: sja1105: Convert to mdiobus_c45_read

2022-05-02T11:21:38Z

Stop using the helpers to construct a special phy address which indicates C45. Instead use the C45 accessors, which will call the busses C45 specific read/write API. Reviewed-by: Vladimir Oltean Tested-by: Vladimir Oltean Signed-off-by: Andrew Lunn Signed-off-by: Paolo Abeni

net: dsa: pass extack to dsa_switch_ops :: port_mirror_add()

2022-03-18T00:42:47Z

Drivers might have error messages to propagate to user space, most common being that they support a single mirror port. Propagate the netlink extack so that they can inform user space in a verbal way of their limitations. Signed-off-by: Vladimir Oltean Signed-off-by: Jakub Kicinski

net: dsa: Use netif_rx().

2022-03-04T12:02:19Z

Since commit baebdf48c3600 ("net: dev: Makes sure netif_rx() can be invoked in any context.") the function netif_rx() can be used in preemptible/thread context as well as in interrupt context. Use netif_rx(). Cc: Kurt Kanzenbach Cc: Andrew Lunn Cc: Vivien Didelot Cc: Florian Fainelli Cc: Vladimir Oltean Signed-off-by: Sebastian Andrzej Siewior Acked-by: Kurt Kanzenbach # hellcreek Signed-off-by: David S. Miller

Merge tag 'spi-remove-void' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2022-02-28T18:43:07Z

Mark Brown says: ==================== spi: Make remove() return void This series from Uwe Kleine-König converts the spi remove function to return void since there is nothing useful that we can do with a failure and it as more buses are converted it'll enable further work on the driver core. ==================== Link: https://lore.kernel.org/r/20220228173957.1262628-2-broonie@kernel.org/ Signed-off-by: Jakub Kicinski

flow_offload: reject offload for all drivers with invalid police parameters

2022-02-28T11:12:20Z

As more police parameters are passed to flow_offload, driver can check them to make sure hardware handles packets in the way indicated by tc. The conform-exceed control should be drop/pipe or drop/ok. Besides, for drop/ok, the police should be the last action. As hardware can't configure peakrate/avrate/overhead, offload should not be supported if any of them is configured. Signed-off-by: Jianbo Liu Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller

net: dsa: sja1105: enforce FDB isolation

2022-02-27T11:06:14Z

For sja1105, to enforce FDB isolation simply means to turn on Independent VLAN Learning unconditionally, and to remap VLAN-unaware FDB and MDB entries towards the private VLAN allocated by tag_8021q for each bridge. Standalone ports each have their own standalone tag_8021q VLAN. No learning happens in that VLAN due to: - learning being disabled on standalone user ports - learning being disabled on the CPU port (we use assisted_learning_on_cpu_port which only installs bridge FDBs) VLAN-aware ports learn FDB entries with the bridge VLANs. VLAN-unaware bridge ports learn with the tag_8021q VLAN for bridging. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: dsa: pass extack to .port_bridge_join driver methods

2022-02-27T11:06:14Z

As FDB isolation cannot be enforced between VLAN-aware bridges in lack of hardware assistance like extra FID bits, it seems plausible that many DSA switches cannot do it. Therefore, they need to reject configurations with multiple VLAN-aware bridges from the two code paths that can transition towards that state: - joining a VLAN-aware bridge - toggling VLAN awareness on an existing bridge The .port_vlan_filtering method already propagates the netlink extack to the driver, let's propagate it from .port_bridge_join too, to make sure that the driver can use the same function for both. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: dsa: request drivers to perform FDB isolation

2022-02-27T11:06:14Z

For DSA, to encourage drivers to perform FDB isolation simply means to track which bridge does each FDB and MDB entry belong to. It then becomes the driver responsibility to use something that makes the FDB entry from one bridge not match the FDB lookup of ports from other bridges. The top-level functions where the bridge is determined are: - dsa_port_fdb_{add,del} - dsa_port_host_fdb_{add,del} - dsa_port_mdb_{add,del} - dsa_port_host_mdb_{add,del} aka the pre-crosschip-notifier functions. Changing the API to pass a reference to a bridge is not superfluous, and looking at the passed bridge argument is not the same as having the driver look at dsa_to_port(ds, port)->bridge from the ->port_fdb_add() method. DSA installs FDB and MDB entries on shared (CPU and DSA) ports as well, and those do not have any dp->bridge information to retrieve, because they are not in any bridge - they are merely the pipes that serve the user ports that are in one or multiple bridges. The struct dsa_bridge associated with each FDB/MDB entry is encapsulated in a larger "struct dsa_db" database. Although only databases associated to bridges are notified for now, this API will be the starting point for implementing IFF_UNICAST_FLT in DSA. There, the idea is to install FDB entries on the CPU port which belong to the corresponding user port's port database. These are supposed to match only when the port is standalone. It is better to introduce the API in its expected final form than to introduce it for bridges first, then to have to change drivers which may have made one or more assumptions. Drivers can use the provided bridge.num, but they can also use a different numbering scheme that is more convenient. DSA must perform refcounting on the CPU and DSA ports by also taking into account the bridge number. So if two bridges request the same local address, DSA must notify the driver twice, once for each bridge. In fact, if the driver supports FDB isolation, DSA must perform refcounting per bridge, but if the driver doesn't, DSA must refcount host addresses across all bridges, otherwise it would be telling the driver to delete an FDB entry for a bridge and the driver would delete it for all bridges. So introduce a bool fdb_isolation in drivers which would make all bridge databases passed to the cross-chip notifier have the same number (0). This makes dsa_mac_addr_find() -> dsa_db_equal() say that all bridge databases are the same database - which is essentially the legacy behavior. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: dsa: tag_8021q: rename dsa_8021q_bridge_tx_fwd_offload_vid

2022-02-27T11:06:14Z

The dsa_8021q_bridge_tx_fwd_offload_vid is no longer used just for bridge TX forwarding offload, it is the private VLAN reserved for VLAN-unaware bridging in a way that is compatible with FDB isolation. So just rename it dsa_tag_8021q_bridge_vid. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: dsa: tag_8021q: merge RX and TX VLANs

2022-02-27T11:06:14Z

In the old Shared VLAN Learning mode of operation that tag_8021q previously used for forwarding, we needed to have distinct concepts for an RX and a TX VLAN. An RX VLAN could be installed on all ports that were members of a given bridge, so that autonomous forwarding could still work, while a TX VLAN was dedicated for precise packet steering, so it just contained the CPU port and one egress port. Now that tag_8021q uses Independent VLAN Learning and imprecise RX/TX all over, those lines have been blurred and we no longer have the need to do precise TX towards a port that is in a bridge. As for standalone ports, it is fine to use the same VLAN ID for both RX and TX. This patch changes the tag_8021q format by shifting the VLAN range it reserves, and halving it. Previously, our DIR bits were encoding the VLAN direction (RX/TX) and were set to either 1 or 2. This meant that tag_8021q reserved 2K VLANs, or 50% of the available range. Change the DIR bits to a hardcoded value of 3 now, which makes tag_8021q reserve only 1K VLANs, and a different range now (the last 1K). This is done so that we leave the old format in place in case we need to return to it. In terms of code, the vid_is_dsa_8021q_rxvlan and vid_is_dsa_8021q_txvlan functions go away. Any vid_is_dsa_8021q is both a TX and an RX VLAN, and they are no longer distinct. For example, felix which did different things for different VLAN types, now needs to handle the RX and the TX logic for the same VLAN. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller