Commit Graph

3034 Commits

Author SHA1 Message Date
Nogah Frankel
218a8f8a63 mlxsw: spectrum_switchdev: Use generic mc flood function
Use the generic mc flood function to decide whether to flood mc to a port
when mc is being enabled / disabled.
Move this function in the file to avoid forward declaration.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
2e3496cd34 mlxsw: spectrum_switchdev: Disable mdb when mc is disabled
Remove all the mdb entries from the HW when mc is being disabled and
re-write them when it is being enabled.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
846fd8a0e7 mlxsw: spectrum_switchdev: Don't write mids to the HW when mc is disabled
Don't write multicast related data to the HW when mc is disabled.
Also, don't allocate mid id to new mids (so the remove function could know
that they weren't wrote to the HW)

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
061e55bfb8 mlxsw: spectrum_switchdev: Break mid deletion into two function
Break mid deletion into two function, so it will be possible in the future
to delete a mid entry for other reasons then switchdev command (like port
deletion).

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
73b433e803 mlxsw: spectrum_switchdev: Attach mid id allocation to HW write
Attach mid getting and releasing mid id to the HW write / remove, and add
a flag to indicate whether the mid is in the HW. It is done because mid id
is also HW index to this mid.
This change allows adding in the following patches the ability to have a
mid in the mdb cache but not in the HW. It will be useful for being able
to disable the multicast.
It means that the mdb is being written / delete to the HW in the mid
allocation / removing function, not after them.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
5f9abc597c mlxsw: spectrum_switchdev: Break smid write function
Break the smid write function into two, one that cleans the ports that
might be still written there and one that changes an exiting mid entry.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
b80888a919 mlxsw: spectrum_switchdev: Save mids list per bridge device
Instead of saving all the mids in the same list, save them per vlan
device. This change allows a more efficient mid find.
Also, in the next patches, there will be added a lot of loops over all the
mids in bridge device for multicast disable, mrouter change and ndb flush.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
0161b9505a mlxsw: spectrum_switchdev: Remove reference count from mid
Since there is a bitmap for the ports registered to each mid, there is no
need for a ref count, since it will always be the number of set bits in
this bitmap. Any check of the ref count was replaced with checking if the
bitmap is empty.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
4cdc35e4eb mlxsw: spectrum_switchdev: Add a ports bitmap to the mid db
Add a bitmap of ports to the mid struct to hold the ports that are
registered to this mid.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Nogah Frankel
dff37b58ca mlxsw: spectrum_switchdev: Change mc_router to mrouter
Change the naming of mc_router to mrouter to keep consistency.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-20 18:03:12 -07:00
Yotam Gigi
b48cfc80ce mlxsw: spectrum: Add multicast router traps and trap groups
Add three new traps needed for multicast routing:
 - PIM: Trap for PIM protocol control packets.
 - RPF: Trap for packets that fail the RPF check on a specific hardware
   route entry.
 - MULTICAST: Generic trap for multicast. It is used for routes that trap
   the packets to the CPU.

The RPF and MULTICAST traps have rate limiters as these traps may have
line-rate of packets trapped. The PIM trap has a rate limiter similarly to
other L3 control protocols. The rate limiters are implemented by adding
three new trap groups for the newly introduced traps.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
91e4d59a46 mlxsw: spectrum_router: Export RIF dev access function
The mlxsw_sp_rif struct, defined as private struct in spectrum_router.c
will be used in the multicast router source file. Due to the fact that the
dev field will be needed by the multicast router logic, add an access
function to it.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
4af5964e58 mlxsw: reg: Configure RIF to forward IPv4 multicast packets by default
Turn on two bits on the Spectrum RIF configuration:
 - IPv4 multicast: when a multicast packet arrives on a RIF, send it to go
   through multicast routes lookup.
 - IPv4 multicast forwarding enable: when multicast packet arrives on a
   RIF, allow it to be forwarded by multicast routes. If this bit is not
   set, multicast packets will go through multicast routing lookup but will
   be dropped at the egress of the ports.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
4fc92846f6 mlxsw: reg: Add Router Rules Copy Register
The RRCR register is used for copying and moving TCAM multicast routes
from different offsets. It will be used to allow routes relocation for
parman ops as part of the multicast router offloading logic.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
2e654e33c5 mlxsw: reg: Add the Router Multicast Forwarding Table Version 2 register
The RMFT-V2 register is used to configure and query the multicast table and
will be used by the multicast router offloading logic.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
771ced742a mlxsw: resources: Add multicast ERIF list entries resource
The multicast ERIF list entries resource indicates the number of entries
that can be put in one rigr2 register operation. While the register can
hold up to MLXSW_REG_RIGR2_MAX_ERIFS ( = 32) ERIF entries, the actual
number allowed by firmware is indicated with this resource.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
5080c7e917 mlxsw: reg: Add the Router Interface Group Version 2 register
The RIGR-V2 register is used to add, remove and query egress interface list
of a multicast forwarding entry and it will be used by the multicast
router offloading logic.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
46a7054eba mlxsw: reg: Add The Router TCAM Allocation register
This register is used for allocation of regions in the TCAM table and it
will be used by the multicast router offloading logic.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
5872656551 mlxsw: reg: Rename the flexible action set length field
The MLXSW_REG_PXXX_FLEX_ACTION_SET_LEN is relevant for the multicast router
registers too, so rename it to have a general name which is not bound to a
specific register.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
9cb3fa940e mlxsw: acl: Change trap ACL action to get the trap_id as a parameter
Allow the trap ACL action to be configured with different traps. This
allows the multicast router offloading code to use that same ACL action
with the multicast router traps. By using different traps, the multicast
router can have different trap policies and can handle the packet
differently.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
4b8a79ff27 mlxsw: acl: Introduce mcrouter ACL action
The Spectrum multicast forwarding is done using an ACL action. Add the
mcrouter ACL action that will be used to offload the multicast router
logic.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
d3b939b8f9 mlxsw: spectrum: Move ACL flexible actions instance to spectrum
A flexible action instance allows, given a set of ops, creating, committing
and sharing a set of ACL action blocks. The flexible action instance in
question is using the spectrum KVD linear space to store the flexible
action sets.

Move this flexible action instance to the common spectrum struct to allow
other users (such as multicast router) to get that functionality.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:40 -07:00
Yotam Gigi
e2b2d35a05 mlxsw: spectrum: Change init order
The multicast router offloading code is going to require the counter_pools
initialization to occur before the router initialization, thus, change the
spectrum initialization order to fix it.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 14:21:39 -07:00
Ido Schimmel
8e29f97979 mlxsw: spectrum_router: Only handle IPv4 and IPv6 events
The driver doesn't support events from address families other than IPv4
and IPv6, so ignore them. Otherwise, we risk queueing a work item before
it's initialized.

This can happen in case a VRF is configured when MROUTE_MULTIPLE_TABLES
is enabled, as the VRF driver will try to add an l3mdev rule for the
IPMR family.

Fixes: 65e65ec137 ("mlxsw: spectrum_router: Don't ignore IPv6 notifications")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Andreas Rammhold <andreas@rammhold.de>
Reported-by: Florian Klink <flokli@flokli.de>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-16 09:21:43 -07:00
Yuval Mintz
6399ebcccf mlxsw: spectrum: Prevent mirred-related crash on removal
When removing the offloading of mirred actions under
matchall classifiers, mlxsw would find the destination port
associated with the offloaded action and utilize it for undoing
the configuration.

Depending on the order by which ports are removed, it's possible that
the destination port would get removed before the source port.
In such a scenario, when actions would be flushed for the source port
mlxsw would perform an illegal dereference as the destination port is
no longer listed.

Since the only item necessary for undoing the configuration on the
destination side is the port-id and that in turn is already maintained
by mlxsw on the source-port, simply stop trying to access the
destination port and use the port-id directly instead.

Fixes: 763b4b70af ("mlxsw: spectrum: Add support in matchall mirror TC offloading")
Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-12 20:42:29 -07:00
Arkadi Sharshevsky
4400081b63 mlxsw: spectrum: Fix EEPROM access in case of SFP/SFP+
The current code does not handle correctly the access to the upper page
in case of SFP/SFP+ EEPROM. In that case the offset should be local
and the I2C address should be changed.

Fixes: 2ea109039c ("mlxsw: spectrum: Add support for access cable info via ethtool")
Reported-by: Florian Klink <flokli@flokli.de>
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-11 10:40:59 -07:00
Linus Torvalds
aae3dbb477 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) Support ipv6 checksum offload in sunvnet driver, from Shannon
    Nelson.

 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
    Dumazet.

 3) Allow generic XDP to work on virtual devices, from John Fastabend.

 4) Add bpf device maps and XDP_REDIRECT, which can be used to build
    arbitrary switching frameworks using XDP. From John Fastabend.

 5) Remove UFO offloads from the tree, gave us little other than bugs.

 6) Remove the IPSEC flow cache, from Florian Westphal.

 7) Support ipv6 route offload in mlxsw driver.

 8) Support VF representors in bnxt_en, from Sathya Perla.

 9) Add support for forward error correction modes to ethtool, from
    Vidya Sagar Ravipati.

10) Add time filter for packet scheduler action dumping, from Jamal Hadi
    Salim.

11) Extend the zerocopy sendmsg() used by virtio and tap to regular
    sockets via MSG_ZEROCOPY. From Willem de Bruijn.

12) Significantly rework value tracking in the BPF verifier, from Edward
    Cree.

13) Add new jump instructions to eBPF, from Daniel Borkmann.

14) Rework rtnetlink plumbing so that operations can be run without
    taking the RTNL semaphore. From Florian Westphal.

15) Support XDP in tap driver, from Jason Wang.

16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.

17) Add Huawei hinic ethernet driver.

18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
    Delalande.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
  i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
  i40e: avoid NVM acquire deadlock during NVM update
  drivers: net: xgene: Remove return statement from void function
  drivers: net: xgene: Configure tx/rx delay for ACPI
  drivers: net: xgene: Read tx/rx delay for ACPI
  rocker: fix kcalloc parameter order
  rds: Fix non-atomic operation on shared flag variable
  net: sched: don't use GFP_KERNEL under spin lock
  vhost_net: correctly check tx avail during rx busy polling
  net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
  rxrpc: Make service connection lookup always check for retry
  net: stmmac: Delete dead code for MDIO registration
  gianfar: Fix Tx flow control deactivation
  cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
  cxgb4: Fix pause frame count in t4_get_port_stats
  cxgb4: fix memory leak
  tun: rename generic_xdp to skb_xdp
  tun: reserve extra headroom only when XDP is set
  net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
  net: dsa: bcm_sf2: Advertise number of egress queues
  ...
2017-09-06 14:45:08 -07:00
Thomas Meyer
691223ec97 net/mlx4_core: Use ARRAY_SIZE macro
Use ARRAY_SIZE macro, rather than explicitly coding some variant of it
yourself.
Found with: find -type f -name "*.c" -o -name "*.h" | xargs perl -p -i -e
's/\bsizeof\s*\(\s*(\w+)\s*\)\s*\ /\s*sizeof\s*\(\s*\1\s*\[\s*0\s*\]\s*\)
/ARRAY_SIZE(\1)/g' and manual check/verification.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-05 11:49:16 -07:00
David S. Miller
18a4ded9d1 mlx5-updates-2017-09-03
This series from Tariq includes micro data path optimization for mlx5e
 netdevice driver.
 
 Mainly Tariq introduces the following changes to NAPI and RX handling
 path of the driver:
  - RX ring structure reorganizing
  - Trivial code refactoring and optimization
  - NAPI busy-poll for when fast UMR is in progress
  - Non-atomic state operations in NAPI context
  - Remove unnecessary fields from fast path structures
  - page-cache micro optimization
  - Rely on NAPI to avoid missing an IRQ for RX/TX shared NAPI contexts
  - Stop NAPI when irq changes affinity
  - Distribute RSS table among all RX rings
 
 Thanks,
 Saeed.
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Merge tag 'mlx5-updates-2017-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2017-09-03

This series from Tariq includes micro data path optimization for mlx5e
netdevice driver.

Mainly Tariq introduces the following changes to NAPI and RX handling
path of the driver:
 - RX ring structure reorganizing
 - Trivial code refactoring and optimization
 - NAPI busy-poll for when fast UMR is in progress
 - Non-atomic state operations in NAPI context
 - Remove unnecessary fields from fast path structures
 - page-cache micro optimization
 - Rely on NAPI to avoid missing an IRQ for RX/TX shared NAPI contexts
 - Stop NAPI when irq changes affinity
 - Distribute RSS table among all RX rings
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 21:17:07 -07:00
Petr Machata
ee954d1a91 mlxsw: spectrum_router: Support GRE tunnels
This patch introduces callbacks and tunnel type to offload GRE tunnels.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
92107cfb41 mlxsw: spectrum_router: Add loopback accessors
struct mlxsw_sp_rif is a router-private structure, and therefore
everything related to it is as well: parameters, and derived RIF types
including loopbacks. IPIP module needs access to some details of
loopback interfaces, but exporting all the RIF shebang would create too
large an interface.

So instead export just the bare minimum necessary: accessors for RIF
index and underlay VRF ID.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
86484de2c9 mlxsw: spectrum: Register for IPIP_DECAP_ERROR trap
These traps are generated for packets that fail checks for source IP,
encapsulation type, or GRE key. Trap these packets to CPU for follow-up
handling by the kernel, which will send ICMP destination unreachable
responses.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
1cc38fb144 mlxsw: spectrum_router: Use existing decap route
The local route that points at IPIP's underlay device (decap route) can
be present long before the GRE device. Thus when an encap route is
added, it's necessary to look inside the underlay FIB if the decap route
is already present. If so, the current trap offload needs to be
withdrawn and replaced with a decap offload.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
4607f6d269 mlxsw: spectrum_router: Support IPv4 underlay decap
Unlike encapsulation, which is represented by a next hop forwarding to
an IPIP tunnel, decapsulation is a type of local route. It is created
for local routes whose prefix corresponds to the local address of one of
offloaded IPIP tunnels. When the tunnel is removed (i.e. all the encap
next hops are removed), the decap offload is migrated back to a trap for
resolution in slow path.

This patch assumes that decap route is already present when encap route
is added. A follow-up patch will fix this issue.

Note that this patch only supports IPv4 underlay. Support for IPv6
underlay will be subject to follow-up work apart from this patchset.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
8f28a30976 mlxsw: spectrum_router: Support IPv6 overlay encap
Add the missing bits to recognize IPv6 next hops as IPIP ones to enable
offloading of IPv6 overlay encapsulation.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:26 -07:00
Petr Machata
1012b9ac28 mlxsw: spectrum_router: Support IPv4 overlay encap
This introduces some common code for tracking of offloaded IP-in-IP
tunnels, and support for offloading IPv4 overlay encapsulating routes in
particular. A follow-up patch will introduce IPv6 overlay as well.

Offloaded tunnels are kept in a linked list of mlxsw_sp_ipip_entry
objects hooked up in mlxsw_sp_router. A network device that represents
the tunnel is used as a key to look up the corresponding IPIP entry.
Note that in the future, more general keying mechanism will be needed,
because parts of the tunnel information can be provided by the route.

IPIP entries are reference counted, because several next hops may end up
using the same tunnel, and we only want to offload it once.

Encapsulation path hooks into next hop handling. Routes that forward to
a tunnel are now considered gateway routes, thus giving them the same
treatment that other remote routes get. An IPIP next hop type is
introduced.

Details of individual tunnel types are kept in an array of
mlxsw_sp_ipip_ops objects. If a tunnel type doesn't match any of the
known tunnel types, the next-hop is not considered an IPIP next hop.

The list of IPIP tunnel types is currently empty, follow-up patches will
add support for GRE. Traffic to IPIP tunnel types that are not
explicitly recognized by the driver traps and is handled in slow path.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
35225e4740 mlxsw: spectrum_router: Make nexthops typed
In the router, some next hops may reference an encapsulating netdevice,
such as GRE or IPIP. To properly offload these next hops, mlxsw needs to
keep track of whether a given next hop is a regular Ethernet entry, or
an IP-in-IP tunneling entry.

To facilitate this book-keeping, add a type field to struct
mlxsw_sp_nexthop. There is, as of this patch, only one next hop type:
MLXSW_SP_NEXTHOP_TYPE_ETH. Follow-up patches will introduce the IP-in-IP
variant.

There are several places where next hops are initialized in the IPv4
path. Instead of replicating the logic at every one of them, factor it
out to a function mlxsw_sp_nexthop4_type_init(). The corresponding fini
is actually protocol-neutral, so put it to mlxsw_sp_nexthop_type_fini(),
but create a corresponding protocoled _fini function that dispatches to
the protocol-neutral one.

The IPv6 path is simpler, but for symmetry with IPv4, create the same
suite of functions with corresponding logic.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
f6050ee6f4 mlxsw: spectrum_router: Extract mlxsw_sp_rt6_is_gateway()
IPv6 counterpart of the previous patch: introduce a function to
determine whether a given route is a gateway route.

The new function takes a mlxsw_sp argument which follow-up patches will
use. Thus mlxsw_sp_fib6_entry_type_set() got that argument as well.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
9b01451ad5 mlxsw: spectrum_router: Extract mlxsw_sp_fi_is_gateway()
For IPv4 IP-in-IP offload, routes that direct traffic to IP-in-IP
devices need to be considered gateway routes as well. That involves a
bit more logic, so extract the current test to a separate function,
where the logic can be later added.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
6ddb7426a7 mlxsw: spectrum_router: Introduce loopback RIFs
When offloading L3 tunnels, an adjacency entry is created that loops the
packet back into the underlay router. Loopback interfaces then hold the
corresponding information and are created for IP-in-IP netdevices.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
010cadf916 mlxsw: spectrum_router: Support FID-less RIFs
Loopback RIFs, which will be introduced in a follow-up patch, differ
from other RIFs in that they do not have a FID associated with them.

To support this, demote FID allocation from mlxsw_sp_rif_create to
configure op of the existing RIF types, and likewise the FID release
from mlxsw_sp_rif_destroy to deconfigure op.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
38ebc0f454 mlxsw: spectrum_router: Add mlxsw_sp_ipip_ops
Details of individual tunnel types are kept in an array of
mlxsw_sp_ipip_ops objects. Follow-up patches will use the list to
determine whether a constructed RIF should be a loopback, and to decide
whether a next hop references a tunnel.

The list is currently empty, follow-up patches will add support for GRE.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
ff1f06ce9d mlxsw: spectrum_router: Publish mlxsw_sp_l3proto
The spectrum_ipip module that will be introduced in the follow-up
patches needs to know the data type.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
89e419828f mlxsw: reg: Give mlxsw_reg_ratr_pack a type parameter
To support IPIP, the driver needs to be able to construct an IPIP
adjacency. Change mlxsw_reg_ratr_pack to take an adjacency type as an
argument. Adjust the one existing caller.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
9571e828f4 mlxsw: reg: Extract mlxsw_reg_ritr_mac_pack()
Unlike other interface types, loopback RIFs do not have MAC address. So
drop the corresponding argument from mlxsw_reg_ritr_pack() and move it
to a new function. Call that from callers of mlxsw_reg_ritr_pack.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:25 -07:00
Petr Machata
1e659ebf58 mlxsw: reg: Add Routing Tunnel Decap Properties Register
The RTDP register is used for configuring the tunnel decap properties of
NVE and IPinIP.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:24 -07:00
Petr Machata
a43da820c8 mlxsw: reg: Add mlxsw_reg_ralue_act_ip2me_tun_pack()
To implement IP-in-IP decapsulation, Spectrum uses LPM entries of type
IP2ME with tunnel validity bit and tunnel pointer set. The necessary
register fields are already available, so add a function to pack the
RALUE as appropriate.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:24 -07:00
Petr Machata
6c4153b1e7 mlxsw: reg: Move enum mlxsw_reg_ratr_trap_id
This enum is used with reg_ratr_trap_id, so move it next to the register
definition.

While at it, drop the enumerator initializers.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:24 -07:00
Petr Machata
7c819de438 mlxsw: reg: Update RATR to support IP-in-IP tunnels
So far, adjacencies have always been of type Ethernet (with value of 0),
and thus there was no need to explicitly support RATR type. However to
support IP-in-IP adjacencies, this type and a suite of IP-in-IP-specific
attributes need to be added.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:24 -07:00
Petr Machata
99ae8e3e5e mlxsw: reg: Update RITR to support loopback device
Update the register so that loopback RIFs can be created and loopback
properties specified.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-03 20:23:24 -07:00