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path: root/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
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* octeontx2-af: Enable broadcast packet replicationSunil Goutham2019-11-141-40/+47
| | | | | | | | | | | | | | | | Ingress packet replication support has been added to 96xx B0 silicon. This patch enables using that feature to replicate ingress broadcast packets to PF and it's VFs. Also fixed below issues - VFs can also install NPC MCAM entry to forward broadcast pkts. Otherwise, unless PF's interface is UP, VFs will not receive bcast packets. - NPC MCAM entry is disabled when PF and all it's VFs are down. - Few corner cases in installing multicast entry list. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Support fixed transmit scheduler topologySunil Goutham2019-11-141-3/+3
| | | | | | | | | | | | | | | | | CN96xx initial silicon doesn't support all features pertaining to NIX transmit scheduling and shaping. - It supports a fixed topology of 1:1 mapped transmit limiters at all levels. - Supports DWRR only at SMQ/MDQ and TL1. - Doesn't support shaping and coloring. This patch adds HW capability structure by which each variant and skew of silicon can be differentiated by their supported features. And adds support for A0 silicon's transmit scheduler capabilities or rather limitations. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Clear NPC MCAM entries before updateNithin Dabilpuram2019-11-141-2/+31
| | | | | | | | | | | | | | | | Writing into NPC MCAM1 and MCAM0 registers are suppressed if they happened to form a reserved combination. Hence clear and disable MCAM entries before update. For HRM: [CAM(1)]<n>=1, [CAM(0)]<n>=1: Reserved. The reserved combination is not allowed. Hardware suppresses any write to CAM(0) or CAM(1) that would result in the reserved combination for any CAM bit. Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Update NPC KPU packet parsing profileHao Zheng2019-11-141-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Updated NPC KPU packet parsing profile with support for following - Fragmentation support for IPv4 IPv6 outer header - NIX instruction header support - QinQ with TPID of 0x8100 as non inner most vlan tag, as legacy network equipments still generate QinQ packets with this configuration. - To better support RSS for tunnelled packets, udp based tunnel protocols such as vxlan, vxlan-gpe, geneve and gtpu are now captured into a separate layer E. Consequently, the inner packet headers are pushed one layer down to LF, LG, and LH accordingly. - Support for rfc7510 mpls in udp. Up to 4 MPLS labels can be parsed and captured in one layer LE. - Parser support for DSA, extended DSA and eDSA tags right after ethernet header by Marvell SOHO and Falcon switches. For extended DSA and eDSA tags, a special PKIND of 62 is used, as these tags don't contain a tpid field. - Higig2 protocol header parsing support, added a NPC_LT_LA_HIGIG2_ETHER for a combined header of HIGIG2 and Ethernet. Add a NPC_LT_LA_IH_NIX_HIGIG2_ETHER for a combined header of nix_ih, HIGIG2 and Ethernet on egress side. Also added 2 upper flags in LA to indicate the presence of nix_ih and HIGIG2. Other changes include - IPv4.TTL==0 IPv6.HLIM==0 check - Per RFC 1858, mark fragment offset == 1 as error - TCP invalid flags check - Separate error codes for outer and inner IPv4 checksum errors. - Fix a parser error when KPU parses incoming IPSec ESP and AH packets - NPC vtag capture/strip hardware expect tag pointer to point to tpid/ethertype instead of tci. So move lb_ptr to point to tpid/ethertype. - Fix npc parser error when parsing udp packets that don't have any payload. - For a single MCAM entry to match on packets with one or stacked vlan tags combine NPC_LT_LB_STAG and NPC_LT_LB_QINQ to NPC_LT_LB_STAG_QINQ. - NVGRE to have a separate ltype LD_NVGRE instead of combined with LD_GRE. - Reserve top LD/LTYPEs to support custom KPU profile fields. Signed-off-by: Hao Zheng <haoz@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Add NPC MCAM entry allocation status to debugfsSunil Goutham2019-11-141-1/+51
| | | | | | | | | | | | | | | | | | | Added support to display current NPC MCAM entries and counter's allocation status ín debugfs. cat /sys/kernel/debug/octeontx2/npc/mcam_info' will dump following info - MCAM Rx and Tx keysize - Total MCAM entries and counters - Current available count - Count of number of MCAM entries and counters allocated by a RVU PF/VF device. Also, one NPC MCAM counter (last one) is reserved and mapped to NPC RX_INTF's MISS_ACTION to count dropped packets due to no MCAM entry match. This pkt drop counter can be checked via debugfs. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Enable mkex profileVamsi Attunuru2018-12-031-2/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following set of NPC registers allow the driver to configure NPC to generate different key value schemes to compare against packet payload in MCAM search. NPC_AF_INTF(0..1)_KEX_CFG NPC_AF_KEX_LDATA(0..1)_FLAGS_CFG NPC_AF_INTF(0..1)_LID(0..7)_LT(0..15)_LD(0..1)_CFG NPC_AF_INTF(0..1)_LDATA(0..1)_FLAGS(0..15)_CFG Currently, the AF driver populates these registers to configure the default values to address the most common use cases such as key generation for channel number + DMAC. The secure firmware stores different configuration value of these registers to enable different NPC use case along with the name for the lookup. Patch loads profile binary from secure firmware over the exiting CGX mailbox interface and apply the profile. AF driver shall fall back to the default configuration in case of any errors. The AF consumer driver can know the selected profile on response to NPC_GET_KEX_CFG mailbox by introducing mkex_pfl_name in the struct npc_get_kex_cfg_rsp. Signed-off-by: Vamsi Attunuru <vamsi.attunuru@marvell.com> Signed-off-by: Jerin Jacob <jerinj@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Enable RSS with promiscuous modeVamsi Attunuru2018-12-031-4/+31
| | | | | | | | | This patch adds support for enabling RSS in promiscuous mode if RSS is already requested by the AF client. Signed-off-by: Vamsi Attunuru <vamsi.attunuru@marvell.com> Signed-off-by: Jerin Jacob <jerinj@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Enable inner IPv4 checksum and its error codeJerin Jacob2018-12-031-1/+8
| | | | | | | | | | | This patch enables the inner IPv4 checksum and defines the error code for Rx inner and outer checksum errors. Setting ERRCODE as 1 so that CQE descriptor can be embedded valid checksum error code and the driver can interpret checksum error as ERRLEV = LID + 1 and ERRCODE = 1. Signed-off-by: Jerin Jacob <jerinj@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Skip NIXLF check for bcast MCE entrySunil Goutham2018-12-031-1/+1
| | | | | | | | | | | | | At the time of initial broadcast packet replication table init, NIXLFs are not yet attached to PF_FUNCs. Hence skipped checking NIXLF while submitting MCE entry init instruction to NIX admin queue. Also did a minor cleanup while installing bcast match entry in packet parser unit i.e NPC. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: Jerin Jacob <jerinj@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Workarounds for HW errataSunil Goutham2018-11-191-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | Errata 35038 Software sets NIX_AF_RX_SW_SYNC[ENA] to sync (flush) in-flight packets the RX data path before configuration changes (e.g. disabling one or more RQs). Hardware clears [ENA] to indicate sync is done An issue exists whereby NIX may clear NIX_AF_RX_SW_SYNC [ENA] too early. Errata 35057 NIX may corrupt internal state when conditional clocks turn off. So turnon all clocks by default. Errata 35786 Parse nibble enable NPC configuration for KEY generation has to be identical for both Rx and Tx interfaces. Also corrected endianness configuration for NIX i.e NIX_AF_CFG[AF_BE] is bit8 and not bit1. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: Jerin Jacob <jerinj@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Configure AF VFs to talk over LBK channelsTomasz Duszynski2018-11-191-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | Configure AF VFs such that they are able to talk over consecutive loopback channels. If 8 VFs are attached to AF then communication will work as below: TX RX lbk0 -> lbk1 lbk1 -> lbk0 lbk2 -> lbk3 lbk3 -> lbk2 lbk4 -> lbk5 lbk5 -> lbk4 lbk6 -> lbk7 lbk7 -> lbk6 Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Add support for stripping STAG/CTAGTomasz Duszynski2018-11-191-1/+42
| | | | | | | | | | | | | | | | | | | | This works by shadowing existing UCAST MCAM entry with a new one additionally matching either NPC_LT_LB_CTAG or NPC_LT_LB_STAG. For this to fully work one needs to send properly configured NIX_VTAG_CFG message afterwards i.e with strip and capture enabled and type set to 0. On receiving tagged packet NIX will remove outer VLAN and capture TCI in NIX_RX_PARSE_S. Also simplified RX Vtag configuration flow With this setting STRIP/CAPTURE VTAG actions separately would be possible. Following combinations are possible: STRIP, STRIP and CAPTURE, CAPTURE or nothing (0 disables respective actions). Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Support to enable/disable default MCAM entriesSunil Goutham2018-11-191-27/+64
| | | | | | | | | | | | | For a PF/VF with a NIXLF attached has default/reserved MCAM entries for receiving Ucast/Bcast/Promisc traffic. Ideally traffic should be forwarded to NIXLF only after it's contexts are initialized. This patch keeps these default entries disabled and adds mbox messages for a PF/VF to enable these once NPA/NIXLF initialization is done. Likewise while PF/VF is being teared down, it can send the disable mailbox message to stop receiving traffic. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Add MKEX default profileSantosh Shukla2018-11-191-25/+130
| | | | | | | | | | | | | | | | | Added basic default MKEX profile. This profile tells hardware what data to extract from packet and where to place it (bit offset) in final KEY generated for the parsed packet. Based on the bit placement of the packet data, MCAM entries have to programmed for matching. Also added a msg to retrieve this MKEX profile from PF/VF which inturn can process it to determine how MCAM entry has to be populated. Signed-off-by: Santosh Shukla <sshukla@marvell.com> Signed-off-by: Yuri Tolstov <ytolstov@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Alloc and config NPC MCAM entry at a timeSunil Goutham2018-11-191-0/+72
| | | | | | | | | | A new mailbox message is added to support allocating a MCAM entry along with a counter and configuring it in one go. This reduces the amount of mailbox communication involved in installing a new MCAM rule. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Map or unmap NPC MCAM entry and counterSunil Goutham2018-11-191-4/+179
| | | | | | | | | | | | | | Alloc memory to save MCAM 'entry to counter' mapping and since multiple entries can map to same counter, added counter's reference count tracking. Do 'entry to counter' mapping when a entry is being installed and mbox msg sender requested to configure a counter as well. Mapping is removed when a entry or counter is being freed or a explicit mbox msg is received to unmap them. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Support for NPC MCAM countersSunil Goutham2018-11-191-0/+144
| | | | | | | | | | | | | NPC HW has counters which can be mapped to MCAM entries to gather entry match statistics. This patch adds support to allocate, free, clear and retrieve stats of NPC MCAM counters. New mailbox messages have been added for this. Similar to MCAM entries both contiguous and non-contiguous counter allocation is supported. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: MCAM entry installation supportSunil Goutham2018-11-191-8/+171
| | | | | | | | | | | | | | | | Add support for a RVU PF/VF to enable, disable, configure and shuffle MCAM entries via mbox commands. This patch adds mailbox message formats and handling of these commands. As of now otherthan validating MCAM entry index, info like channel number e.t.c in MCAM config data sent by PF/VF are not validated. Also a max of 64 MCAM entries can be shuffled with a single mbox command. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: NPC MCAM entry alloc/free supportSunil Goutham2018-11-191-4/+510
| | | | | | | | | | | | | | This patch adds NPC MCAM entry management and support for allocating and freeing them via mailbox. Both contiguous and non-contiguous allocations are supported. Incase of contiguous, if request cannot be met then max contiguous number of available entries are allocated. High or low priority index allocation w.r.t a reference MCAM index is also supported. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Relax resource lock into mutexStanislaw Kardach2018-11-191-1/+3
| | | | | | | | | | | Mailbox message handling is done in a workqueue context scheduled from interrupt handler. So resource locks does not need to be a spinlock. Therefore relax them into a mutex so that later on we may use them in routines that might sleep. Signed-off-by: Stanislaw Kardach <skardach@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Support for NIXLF's UCAST/PROMISC/ALLMULTI modesSunil Goutham2018-10-221-0/+57
| | | | | | | | | | | | | | | By default NIXLF is set in UCAST mode. This patch adds a new mailbox message which when sent by a RVU PF changes this default mode. When promiscuous mode is needed, the reserved promisc entry for each of RVU PF is setup to match against ingress channel number only, so that all pkts on that channel are accepted and forwarded to the mode change requesting PF_FUNC's NIXLF. PROMISC and ALLMULTI modes are supported only for PFs, for VFs only UCAST mode is supported. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Support for changing RSS algorithmSunil Goutham2018-10-221-0/+43
| | | | | | | | | | | | | | This patch adds support for a RVU PF/VF to change NIX Rx flowkey algorithm index in NPC RX RSS_ACTION. eg: a ethtool command changing RSS algorithm for a netdev interface would trigger this change in NPC. If PF/VF doesn't specify any MCAM entry index then default UCAST entry of the NIXLF attached to PF/VF will be updated with RSS_ACTION and flowkey index. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Install ucast and bcast pkt forwarding rulesSunil Goutham2018-10-221-0/+337
| | | | | | | | | | | | | | | | | | | Upon NIXLF_ALLOC install a unicast forwarding rule in NPC MCAM like below - Match pkt DMAC with NIXLF attached PF/VF's MAC address. - Ingress channel - Action is UCAST - Forward to PF_FUNC of this NIXLF And broadcast pkt forwarding rule as - Match L2B bit in MCAM search key - Ingress channel - Action is UCAST, for now, later it will be changed to MCAST. Only PFs can install this rule Upon NIXLF_FREE disable all MCAM entries in use by that NIXLF. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: NPC MCAM and LDATA extract minimal configurationSunil Goutham2018-10-221-0/+134
| | | | | | | | | | | | | | | | | | | | | | This patch adds some minimal configuration for NPC MCAM and LDATA extraction which is sufficient enough to install ucast/bcast/promiscuous forwarding rules. Below is the config done - LDATA extraction config to extract DMAC from pkt to offset 64bit in MCAM search key. - Set MCAM lookup keysize to 224bits - Set MCAM TX miss action to UCAST_DEFAULT - Set MCAM RX miss action to DROP Also inorder to have guaranteed space in MCAM to install ucast forwarding rule for each of RVU PF/VF, reserved one MCAM entry for each of NIXLF for ucast rule. And two entries for each of RVU PF. One for bcast pkt replication and other for promiscuous mode which allows all pkts received on a HW CGX/LBK channel. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Enable packet length and csum validationSunil Goutham2018-10-221-0/+14
| | | | | | | | | | | | | | | | | Config NPC layer info from KPU profile into protocol checker to identify outer L2/IPv4/TCP/UDP headers in a packet. And enable IPv4 checksum validation. L3/L4 and L4 CSUM validation will be enabled by PF/VF drivers by configuring NIX_AF_LF(0..127)_RX_CFG via mbox i.e 'nix_lf_alloc_req->rx_cfg' Also enable setting of NPC_RESULT_S[L2B] when an outer L2 broadcast address is detected. This will help in installing NPC MCAM rules for broadcast packets. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Config pkind for CGX mapped PFsGeetha sowjanya2018-10-221-0/+28
| | | | | | | | | | | For each CGX LMAC that is mapped to a RVU PF, allocate a pkind and config the same in CGX. For a received packet at CGX LMAC interface this pkind is used by NPC block to start parsing of packet. Signed-off-by: Geetha sowjanya <gakula@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* octeontx2-af: Config NPC KPU engines with parser profileSunil Goutham2018-10-221-0/+203
This patch configures all 16 KPUs and iKPU (pkinds) with the KPU parser profile defined in npc_profile.h. Each KPU engine has a 128 entry CAM, only CAM entries which are listed in the profile are enabled and rest are left disabled. Also - Memory is allocated for pkind's bitmap and PFFUNC, interface channel mapping. - Added all CSR offsets of NPC HW block. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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