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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
