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2020-09-18nl80211: Add FILS discovery supportAloka Dixit3-0/+112
FILS discovery attribute, NL80211_ATTR_FILS_DISCOVERY, is nested which supports following parameters as given in IEEE Std 802.11ai-2016, Annex C.3 MIB detail: (1) NL80211_FILS_DISCOVERY_ATTR_INT_MIN - Minimum packet interval (2) NL80211_FILS_DISCOVERY_ATTR_INT_MAX - Maximum packet interval (3) NL80211_FILS_DISCOVERY_ATTR_TMPL - Template data Signed-off-by: Aloka Dixit <alokad@codeaurora.org> Link: https://lore.kernel.org/r/20200805011838.28166-2-alokad@codeaurora.org [fix attribute and other names, use NLA_RANGE(), use policy only once] Link: https://lore.kernel.org/r/010101747a7b38a8-306f06b2-9061-4baf-81c1-054a42a18e22-000000@us-west-2.amazonses.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: allow bigger A-MSDU sizes in VHT, even if HT is limitedFelix Fietkau1-4/+0
Some APs (e.g. Asus RT-AC88U) have been observed to report an HT MSDU size limit of 3839 and a VHT limit of 7991. These APs can handle bigger frames than 3839 bytes just fine, so we should remove the VHT limit based on the HT capabilities. This improves tx throughput. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200916164611.8022-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18nl80211: support setting S1G channelsThomas Pedersen3-52/+115
S1G channels have a single width defined per frequency, so derive it from the channel flags with ieee80211_s1g_channel_width(). Also support setting an S1G channel where control frequency may differ from operating, and add some basic validation to ensure the control channel is with the operating. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200908190323.15814-6-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18nl80211: correctly validate S1G beacon headThomas Pedersen2-4/+18
The S1G beacon has a different header size than regular beacons, so adjust the beacon head validator. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200908190323.15814-5-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18cfg80211: regulatory: handle S1G channelsThomas Pedersen1-12/+58
S1G channels have a minimum bandwidth of 1Mhz, and there is a 1:1 mapping of allowed bandwidth to channel number. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200908190323.15814-4-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18nl80211: advertise supported channel width in S1GThomas Pedersen3-0/+45
S1G supports 5 channel widths: 1, 2, 4, 8, and 16. One channel width is allowed per frequency in each operating class, so it makes more sense to advertise the specific channel width allowed. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200908190323.15814-3-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18ieee80211: redefine S1G bits with GENMASKThomas Pedersen1-78/+78
The S1G capability fields were defined by ORing BITS() together, and expecting a custom macro to use the _SHIFT definitions. Use the Linux kernel GENMASK for the definitions now, and FIELD_{GET,PREP} to access the fields in the future. Take the chance to rename eg. S1G_CAPAB_B0 to the more compact S1G_CAP0. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200908190323.15814-2-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: reorganize code to remove a forward declarationFelix Fietkau1-473/+471
Remove the newly added ieee80211_set_vif_encap_ops declaration. No further code changes. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-15-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: extend ieee80211_tx_status_ext to support bulk freeFelix Fietkau2-2/+10
Store processed skbs ready to be freed in a list so the driver bulk free them Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-13-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: support using ieee80211_tx_status_ext to free skbs without status infoFelix Fietkau1-11/+16
For encap-offloaded packets, ieee80211_free_txskb cannot be used, since it does not have the vif pointer. Using ieee80211_tx_status_ext for this purpose has the advantage of being able avoid an extra station lookup for AQL Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-12-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: unify 802.3 (offload) and 802.11 tx status codepathFelix Fietkau1-64/+28
Make ieee80211_tx_status_8023 call ieee80211_tx_status_ext, similar to ieee80211_tx_status. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-11-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: optimize station connection monitorFelix Fietkau5-47/+22
Calling mod_timer for every rx/tx packet can be quite expensive. Instead of constantly updating the timer, we can simply let it run out and check the timestamp of the last ACK or rx packet to re-arm it. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-9-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: notify the driver when a sta uses 4-address modeFelix Fietkau5-0/+49
This is needed for encapsulation offload of 4-address mode packets Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-14-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: swap NEED_TXPROCESSING and HW_80211_ENCAP tx flagsFelix Fietkau8-25/+25
In order to unify the tx status path, the hw 802.11 encapsulation flag needs to survive the trip to the tx status call. Since we don't have any free bits in info->flags, we need to move one. IEEE80211_TX_INTFL_NEED_TXPROCESSING is only used internally in mac80211, and only before the call into the driver. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-10-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: remove tx status call to ieee80211_sta_register_airtimeFelix Fietkau2-8/+3
All drivers using airtime fairness are calling ieee80211_sta_register_airtime directly, now they must. Document this as well. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-8-nbd@nbd.name [johannes: update the documentation to suit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: reduce duplication in tx status functionsFelix Fietkau1-66/+35
Move redundant functionality from __ieee80211_tx_status into ieee80211_tx_status_ext. Preparation for unifying with the 802.3 tx status codepath. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-7-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: rework tx encapsulation offload APIFelix Fietkau9-114/+219
The current API (which lets the driver turn on/off per vif directly) has a number of limitations: - it does not deal with AP_VLAN - conditions for enabling (no tkip, no monitor) are only checked at add_interface time - no way to indicate 4-addr support In order to address this, store offload flags in struct ieee80211_vif (easy to extend for decap offload later). mac80211 initially sets the enable flag, but gives the driver a chance to modify it before its settings are applied. In addition to the .add_interface op, a .update_vif_offload op is introduced, which can be used for runtime changes. If a driver can't disable encap offload at runtime, or if it has some extra limitations, it can simply override the flags within those ops. Support for encap offload with 4-address mode interfaces can be enabled by setting a flag from .add_interface or .update_vif_offload. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-6-nbd@nbd.name [resolved conflict with commit aa2092a9bab3 ("ath11k: add raw mode and software crypto support")] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: set info->control.hw_key for encap offload packetsFelix Fietkau1-0/+5
This is needed for drivers that don't do the key lookup themselves Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-5-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: skip encap offload for tx multicast/control packetsFelix Fietkau1-55/+19
This simplifies the checks in the encap offload tx handler and allows using it in cases where software crypto is used for multicast packets, e.g. when using an AP_VLAN. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-4-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: check and refresh aggregation session in encap offload txFelix Fietkau1-0/+18
Update the last_tx timestamp to avoid tearing down the aggregation session early. Fall back to the slow path if the session setup is still running Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-3-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: add missing queue/hash initialization to 802.3 xmitFelix Fietkau1-0/+6
Fixes AQL for encap-offloaded tx Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-2-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18cfg80211: add more comments for ap_isolate in bss_parametersWright Feng1-0/+1
The value of struct bss_parameters::ap_isolate will be -1, 0 or 1. The value -1 means not to change. To prevent developers from thinking ap_isolate is only 0 or 1, I add more comments on it. Signed-off-by: Wright Feng <wright.feng@cypress.com> Reviewed-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200908060157.98846-1-wright.feng@cypress.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18lib80211: Remove unused macro DRV_NAMEYueHaibing1-2/+0
There is no caller in tree any more. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20200829115506.17828-1-yuehaibing@huawei.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-17mptcp: fix integer overflow in mptcp_subflow_discard_data()Paolo Abeni1-1/+1
Christoph reported an infinite loop in the subflow receive path under stress condition. If there are multiple subflows, each of them using a large send buffer, the delta between the sequence number used by MPTCP-level retransmission can and the current msk->ack_seq can be greater than MAX_INT. In the above scenario, when calling mptcp_subflow_discard_data(), such delta will be truncated to int, and could result in a negative number: no bytes will be dropped, and subflow_check_data_avail() will try again to process the same packet, looping forever. This change addresses the issue by expanding the 'limit' size to 64 bits, so that overflows are not possible anymore. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/87 Fixes: 6719331c2f73 ("mptcp: trigger msk processing even for OoO data") Reported-and-tested-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net/smc: fix double kfree in smc_listen_work()Ursula Braun1-2/+2
If smc_listen_rmda_finish() returns with an error, the storage addressed by 'buf' is freed a second time. Consolidate freeing under a common label and jump to that label. Fixes: 6bb14e48ee8d ("net/smc: dynamic allocation of CLC proposal buffer") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17ionic: add DIMLIB to KconfigShannon Nelson1-0/+1
>> ld.lld: error: undefined symbol: net_dim_get_rx_moderation >>> referenced by ionic_lif.c:52 (drivers/net/ethernet/pensando/ionic/ionic_lif.c:52) >>> net/ethernet/pensando/ionic/ionic_lif.o:(ionic_dim_work) in archive drivers/built-in.a >> ld.lld: error: undefined symbol: net_dim >>> referenced by ionic_txrx.c:456 (drivers/net/ethernet/pensando/ionic/ionic_txrx.c:456) >>> net/ethernet/pensando/ionic/ionic_txrx.o:(ionic_dim_update) in archive drivers/built-in.a v2: removed sketchy dashes in commit message Fixes: 04a834592bf5 ("ionic: dynamic interrupt moderation") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: remove comments on struct rtnl_link_statsJakub Kicinski1-16/+15
We removed the misleading comments from struct rtnl_link_stats64 when we added proper kdoc. struct rtnl_link_stats has the same inline comments, so remove them, too. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: mdio: octeon: Select MDIO_DEVRESAndrew Lunn1-0/+1
This driver makes use of devm_mdiobus_alloc_size. To ensure this is available select MDIO_DEVRES which provides it. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17selftests: Set default protocol for raw sockets in nettestDavid Ahern1-0/+2
IPPROTO_IP (0) is not valid for raw sockets. Default the protocol for raw sockets to IPPROTO_RAW if the protocol has not been set via the -P option. Signed-off-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17dpaa2-eth: Convert to DEFINE_SHOW_ATTRIBUTEQinglang Miao1-57/+6
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: hsr: Convert to DEFINE_SHOW_ATTRIBUTEQinglang Miao1-19/+2
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17mlxsw: spectrum_qdisc: Disable port buffer autoresize with qdiscsPetr Machata1-1/+33
There are two interfaces to configure ETS: qdiscs and DCB. Historically, DCB ETS configuration was projected to ingress as well, and configured port buffers. Qdisc was not. Keep qdiscs behaving this way, and if an offloaded qdisc is configured on a port, move this port's headroom to a manual mode, thus allowing configuration of port buffers through dcbnl_setbuffer. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17mlxsw: spectrum_dcb: Implement dcbnl_setbuffer / getbufferPetr Machata1-0/+59
Add dcbnl_setbuffer, which bounces requests if a headroom is in DCB mode. Implement dcbnl_getbuffer such that it can always be used to determine port-buffer configuration, regardless of headroom mode. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17mlxsw: spectrum_buffers: Support two headroom modesPetr Machata2-3/+30
There are two interfaces to configure ETS: qdiscs and DCB. Historically, DCB ETS configuration was projected to ingress as well, and configured port buffers. Qdisc was not. So as not to break clients that today use DCB ETS and PFC and rely on getting a reasonable ingress buffer priomap, keep the ETS mirroring in effect. Since qdiscs have not done this mirroring historically, it is reasonable not to introduce it, but rather permit manual ingress configuration through dcbnl_setbuffer only in the qdisc mode. This will require a toggle to indicate whether buffer sizes should be autocomputed or taken from dcbnl_setbuffer, and likewise for priomaps. Introduce such and initialize it, and guard port buffer size configuration as appropriate. The toggle is currently left in the DCB position. In a following patch, qdisc code will switch it. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17netlink: add spaces around '&' in netlink_recv/sendmsg()Yang Yingliang1-4/+4
It's hard to read the code without spaces around '&', for better reading, add spaces around '&'. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17netdev: Remove unused functionsYueHaibing1-10/+0
There is no callers in tree, so can remove it. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17mptcp: Fix unsigned 'max_seq' compared with zero in mptcp_data_queue_ofoYe Bin1-2/+3
Fixes coccicheck warnig: net/mptcp/protocol.c:164:11-18: WARNING: Unsigned expression compared with zero: max_seq > 0 Fixes: ab174ad8ef76 ("mptcp: move ooo skbs into msk out of order queue") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Ye Bin <yebin10@huawei.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17dt-bindings: marvell,prestera: Add description for device-tree bindingsVadym Kochan1-0/+34
Add brief description how to configure base mac address binding in device-tree. Describe requirement for the PCI port which is connected to the ASIC, to allow access to the firmware related registers. Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: marvell: prestera: Add Switchdev driver implementationVadym Kochan7-4/+1807
The following features are supported: - VLAN-aware bridge offloading - VLAN-unaware bridge offloading - FDB offloading (learning, ageing) - Switchport configuration Currently there are some limitations like: - Only 1 VLAN-aware bridge instance supported - FDB ageing timeout parameter is set globally per device Co-developed-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Co-developed-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Signed-off-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Co-developed-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: marvell: prestera: Add ethtool interface supportVadym Kochan7-6/+1182
The ethtool API provides support for the configuration of the following features: speed and duplex, auto-negotiation, MDI-x, forward error correction, port media type. The API also provides information about the port status, hardware and software statistic. The following limitation exists: - port media type should be configured before speed setting - ethtool -m option is not supported - ethtool -p option is not supported - ethtool -r option is supported for RJ45 port only - the following combination of parameters is not supported: ethtool -s sw1pX port XX autoneg on - forward error correction feature is supported only on SFP ports, 10G speed - auto-negotiation and MDI-x features are not supported on Copper-to-Fiber SFP module Co-developed-by: Andrii Savka <andrii.savka@plvision.eu> Signed-off-by: Andrii Savka <andrii.savka@plvision.eu> Co-developed-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: marvell: prestera: Add basic devlink supportVadym Kochan6-5/+165
Add very basic support for devlink interface: - driver name - fw version - devlink ports Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: marvell: prestera: Add PCI interface supportVadym Kochan3-0/+782
Add PCI interface driver for Prestera Switch ASICs family devices, which provides: - Firmware loading mechanism - Requests & events handling to/from the firmware - Access to the firmware on the bus level The firmware has to be loaded each time the device is reset. The driver is loading it from: /lib/firmware/mrvl/prestera/mvsw_prestera_fw-v{MAJOR}.{MINOR}.img The full firmware image version is located within the internal header and consists of 3 numbers - MAJOR.MINOR.PATCH. Additionally, driver has hard-coded minimum supported firmware version which it can work with: MAJOR - reflects the support on ABI level between driver and loaded firmware, this number should be the same for driver and loaded firmware. MINOR - this is the minimum supported version between driver and the firmware. PATCH - indicates only fixes, firmware ABI is not changed. Firmware image file name contains only MAJOR and MINOR numbers to make driver be compatible with any PATCH version. Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: marvell: prestera: Add driver for Prestera family ASIC devicesVadym Kochan12-0/+2380
Marvell Prestera 98DX326x integrates up to 24 ports of 1GbE with 8 ports of 10GbE uplinks or 2 ports of 40Gbps stacking for a largely wireless SMB deployment. The current implementation supports only boards designed for the Marvell Switchdev solution and requires special firmware. The core Prestera switching logic is implemented in prestera_main.c, there is an intermediate hw layer between core logic and firmware. It is implemented in prestera_hw.c, the purpose of it is to encapsulate hw related logic, in future there is a plan to support more devices with different HW related configurations. This patch contains only basic switch initialization and RX/TX support over SDMA mechanism. Currently supported devices have DMA access range <= 32bit and require ZONE_DMA to be enabled, for such cases SDMA driver checks if the skb allocated in proper range supported by the Prestera device. Also meanwhile there is no TX interrupt support in current firmware version so recycling work is scheduled on each xmit. Port's mac address is generated from the switch base mac which may be provided via device-tree (static one or as nvme cell), or randomly generated. This is required by the firmware. Co-developed-by: Andrii Savka <andrii.savka@plvision.eu> Signed-off-by: Andrii Savka <andrii.savka@plvision.eu> Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Co-developed-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Co-developed-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Signed-off-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Co-developed-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Taras Chornyi <taras.chornyi@plvision.eu> Co-developed-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu> Signed-off-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu> Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17genetlink: Remove unused function genl_err_attr()YueHaibing1-8/+0
It is never used, so can remove it. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net/sched: Remove unused function qdisc_queue_drop_head()YueHaibing1-6/+0
It is not used since commit a09ceb0e0814 ("sched: remove qdisc->drop") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17selftests: mptcp: interpret \n as a new lineMatthieu Baerts2-4/+4
In case of errors, this message was printed: (...) # read: Resource temporarily unavailable # client exit code 0, server 3 # \nnetns ns1-0-BJlt5D socket stat for 10003: (...) Obviously, the idea was to add a new line before the socket stat and not print "\nnetns". Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN") Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net/packet: Fix a comment about mac_headerXie He1-11/+12
1. Change all "dev->hard_header" to "dev->header_ops" 2. On receiving incoming frames when header_ops == NULL: The comment only says what is wrong, but doesn't say what is right. This patch changes the comment to make it clear what is right. 3. On transmitting and receiving outgoing frames when header_ops == NULL: The comment explains that the LL header will be later added by the driver. However, I think it's better to simply say that the LL header is invisible to us. This phrasing is better from a software engineering perspective, because this makes it clear that what happens in the driver should be hidden from us and we should not care about what happens internally in the driver. 4. On resuming the LL header (for RAW frames) when header_ops == NULL: The comment says we are "unlikely" to restore the LL header. However, we should say that we are "unable" to restore it. It's not possible (rather than not likely) to restore it, because: 1) There is no way for us to restore because the LL header internally processed by the driver should be invisible to us. 2) In function packet_rcv and tpacket_rcv, the code only tries to restore the LL header when header_ops != NULL. Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com> Signed-off-by: Xie He <xie.he.0141@gmail.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: hns3: use napi_consume_skb() when cleaning tx descYunsheng Lin3-15/+16
Use napi_consume_skb() to batch consuming skb when cleaning tx desc in NAPI polling. Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: hns3: use writel() to optimize the barrier operationYunsheng Lin2-8/+3
writel() can be used to order I/O vs memory by default when writing portable drivers. Use writel() to replace wmb() + writel_relaxed(), and writel() is dma_wmb() + writel_relaxed() for ARM64, so there is an optimization here because dma_wmb() is a lighter barrier than wmb(). Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-17net: hns3: optimize the rx clean processYunsheng Lin1-30/+31
Currently HNS3_RING_RX_RING_FBDNUM_REG register is read to determine how many rx desc can be cleaned. To avoid the register read operation in the critical data path, use the valid bit in the rx desc to determine if a specific rx desc can be cleaned. The hns3 driver clear valid bit in the rx desc before notifying the rx desc to the hw, and hw will only set the valid bit of the rx desc after corresponding buffer is filled with packet data and other field in the rx desc is set accordingly. Add hns3_rx_ring_move_fw() function to clear the valid bit in the rx desc before moving rx ring's next_to_clean forward to avoid double cleaning a rx desc, also add a dma_rmb() barrier in hns3_handle_rx_bd() to make sure valid bit is set before reading other field in the rx desc. Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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