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  1. 16 7月, 2018 7 次提交
    • B
      net: Add decrypted field to skb · 784abe24
      由 Boris Pismenny 提交于 
      The decrypted bit is propogated to cloned/copied skbs.
This will be used later by the inline crypto receive side offload
of tls.
Signed-off-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      784abe24
    • D
      Merge branch 'mvpp2-add-debugfs-interface' · cc98419a
      由 David S. Miller 提交于 
      Maxime Chevallier says:

====================
net: mvpp2: add debugfs interface

The PPv2 Header Parser and Classifier are not straightforward to debug,
having easy access to some of the many lookup tables configuration is
helpful during development and debug.

This series adds a basic debugfs interface, allowing to read data from
the Header Parser and some of the Classifier tables.

For now, the interface is read-only, and contains only some basic info.

This was actually used during RSS development, and might be useful to
troubleshoot some issues we might find.

The first patch of the series converts the mvpp2 files to SPDX, which
eases adding the new debugfs dedicated file.

The second patch adds the interface, and exposes basic Header Parser data.

The 3rd patch adds a hit counter for the Header Parser TCAM.

The 4th patch exposes classifier info.

The 5th patch adds some hit counters for some of the classifier engines.

Changes since V1:
- Rebased on the lastest net-next
- Made cls_flow_get non static so that it can be used in mvpp2_debugfs
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cc98419a
    • M
      net: mvpp2: debugfs: add classifier hit counters · f9d30d5b
      由 Maxime Chevallier 提交于 
      The classification operations that are used for RSS make use of several
lookup tables. Having hit counters for these tables is really helpful
to determine what flows were matched by ingress traffic, and see the
path of packets among all the classifier tables.

This commit adds hit counters for the 3 tables used at the moment :

 - The decoding table (also called lookup_id table), that links flows
   identified by the Header Parser to the flow table.

   There's one entry per flow, located at :
   .../mvpp2/<controller>/flows/XX/dec_hits

   Note that there are 21 flows in the decoding table, whereas there are
   52 flows in the Header Parser. That's because there are several kind
   of traffic that will match a given flow. Reading the hit counter from
   one sub-flow will clear all hit counter that have the same flow_id.

   This also applies to the flow_hits.

 - The flow table, that contains all the different lookups to be
   performed by the classifier for each packet of a given flow. The match
   is done on the first entry of the flow sequence.

 - The C2 engine entries, that are used to assign the default rx queue,
   and enable or disable RSS for a given port.

   There's one entry per flow, located at:
   .../mvpp2/<controller>/flows/XX/flow_hits

   There is one C2 entry per port, so the c2 hit counter is located at :
   .../mvpp2/<controller>/ethX/c2_hits

All hit counter values are 16-bits clear-on-read values.
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f9d30d5b
    • M
      net: mvpp2: debugfs: add entries for classifier flows · dba1d918
      由 Maxime Chevallier 提交于 
      The classifier configuration for RSS is quite complex, with several
lookup tables being used. This commit adds useful info in debugfs to
see how the different tables are configured :

Added 2 new entries in the per-port directory :

  - .../eth0/default_rxq : The default rx queue on that port
  - .../eth0/rss_enable : Indicates if RSS is enabled in the C2 entry

Added the 'flows' directory :

  It contains one entry per sub-flow. a 'sub-flow' is a unique path from
  Header Parser to the flow table. Multiple sub-flows can point to the
  same 'flow' (each flow has an id from 8 to 29, which is its index in the
  Lookup Id table) :

  - .../flows/00/...
             /01/...
             ...
             /51/id : The flow id. There are 21 unique flows. There's one
                       flow per combination of the following parameters :
                       - L4 protocol (TCP, UDP, none)
                       - L3 protocol (IPv4, IPv6)
                       - L3 parameters (Fragmented or not)
                       - L2 parameters (Vlan tag presence or not)
              .../type : The flow type. This is an even higher level flow,
                         that we manipulate with ethtool. It can be :
                         "udp4" "tcp4" "udp6" "tcp6" "ipv4" "ipv6" "other".
              .../eth0/...
              .../eth1/engine : The hash generation engine used for this
	                        flow on the given port
                  .../hash_opts : The hash generation options indicating on
                                  what data we base the hash (vlan tag, src
                                  IP, src port, etc.)
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      dba1d918
    • M
      net: mvpp2: debugfs: add hit counter stats for Header Parser entries · 1203341c
      由 Maxime Chevallier 提交于 
      One helpful feature to help debug the Header Parser TCAM filter in PPv2
is to be able to see if the entries did match something when a packet
comes in. This can be done by using the built-in hit counter for TCAM
entries.

This commit implements reading the counter, and exposing its value on
debugfs for each filter entry.

The counter is a 16-bits clear-on-read value, located at:
 .../mvpp2/<controller>/parser/XXX/hits
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1203341c
    • M
      net: mvpp2: add a debugfs interface for the Header Parser · 21da57a2
      由 Maxime Chevallier 提交于 
      Marvell PPv2 Packer Header Parser has a TCAM based filter, that is not
trivial to configure and debug. Being able to dump TCAM entries from
userspace can be really helpful to help development of new features
and debug existing ones.

This commit adds a basic debugfs interface for the PPv2 driver, focusing
on TCAM related features.

<mnt>/mvpp2/ --- f2000000.ethernet
              \- f4000000.ethernet --- parser --- 000 ...
                                    |          \- 001
                                    |          \- ...
                                    |          \- 255 --- ai
                                    |                  \- header_data
                                    |                  \- lookup_id
                                    |                  \- sram
                                    |                  \- valid
                                    \- eth1 ...
                                    \- eth2 --- mac_filter
                                             \- parser_entries
                                             \- vid_filter

There's one directory per PPv2 instance, named after pdev->name to make
sure names are uniques. In each of these directories, there's :

 - one directory per interface on the controller, each containing :

   - "mac_filter", which lists all filtered addresses for this port
     (based on TCAM, not on the kernel's uc / mc lists)

   - "parser_entries", which lists the indices of all valid TCAM
      entries that have this port in their port map

   - "vid_filter", which lists the vids allowed on this port, based on
     TCAM

 - one "parser" directory (the parser is common to all ports), containing :

   - one directory per TCAM entry (256 of them, from 0 to 255), each
     containing :

     - "ai" : Contains the 1 byte Additional Info field from TCAM, and

     - "header_data" : Contains the 8 bytes Header Data extracted from
       the packet

     - "lookup_id" : Contains the 4 bits LU_ID

     - "sram" : contains the raw SRAM data, which is the result of the TCAM
		lookup. This readonly at the moment.

     - "valid" : Indicates if the entry is valid of not.

All entries are read-only, and everything is output in hex form.
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      21da57a2
    • A
      net: mvpp2: switch to SPDX identifiers · f1e37e31
      由 Antoine Tenart 提交于 
      Use the appropriate SPDX license identifiers and drop the license text.
This patch is only cosmetic.
Signed-off-by: NAntoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f1e37e31
  3. 15 7月, 2018 14 次提交
    • D
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next · 2aa4a337
      由 David S. Miller 提交于 
      Daniel Borkmann says:

====================
pull-request: bpf-next 2018-07-15

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Various different arm32 JIT improvements in order to optimize code emission
   and make the JIT code itself more robust, from Russell.

2) Support simultaneous driver and offloaded XDP in order to allow for advanced
   use-cases where some work is offloaded to the NIC and some to the host. Also
   add ability for bpftool to load programs and maps beyond just the cgroup case,
   from Jakub.

3) Add BPF JIT support in nfp for multiplication as well as division. For the
   latter in particular, it uses the reciprocal algorithm to emulate it, from Jiong.

4) Add BTF pretty print functionality to bpftool in plain and JSON output
   format, from Okash.

5) Add build and installation to the BPF helper man page into bpftool, from Quentin.

6) Add a TCP BPF callback for listening sockets which is triggered right after
   the socket transitions to TCP_LISTEN state, from Andrey.

7) Add a new cgroup tree command to bpftool which iterates over the whole cgroup
   tree and prints all attached programs, from Roman.

8) Improve xdp_redirect_cpu sample to support parsing of double VLAN tagged
   packets, from Jesper.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2aa4a337
    • D
      Merge branch 'bpf-tcp-listen-cb' · 13f7432b
      由 Daniel Borkmann 提交于 
      Andrey Ignatov says:

====================
This patchset adds TCP-BPF callback for listening sockets.

Patch 0001 provides more details and is the main patch in the set.

Patch 0006 adds selftest for the new callback.

Other patches are bug fixes and improvements in TCP-BPF selftest
to make it easier to extend in 0006.
====================
Acked-by: NLawrence Brakmo <brakmo@fb.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      13f7432b
    • A
      selftests/bpf: Test case for BPF_SOCK_OPS_TCP_LISTEN_CB · 78d8e26d
      由 Andrey Ignatov 提交于 
      Cover new TCP-BPF callback in test_tcpbpf: when listen() is called on
socket, set BPF_SOCK_OPS_STATE_CB_FLAG so that BPF_SOCK_OPS_STATE_CB
callback can be called on future state transition, and when such a
transition happens (TCP_LISTEN -> TCP_CLOSE), track it in the map and
verify it in user space later.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      78d8e26d
    • A
      selftests/bpf: Better verification in test_tcpbpf · 2044e4ef
      由 Andrey Ignatov 提交于 
      Reduce amount of copy/paste for debug info when result is verified in
the test and keep that info together with values being checked so that
they won't get out of sync.

It also improves debug experience: instead of checking manually what
doesn't match in debug output for all fields, only unexpected field is
printed.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      2044e4ef
    • A
      selftests/bpf: Switch test_tcpbpf_user to cgroup_helpers · c65267e5
      由 Andrey Ignatov 提交于 
      Switch to cgroup_helpers to simplify the code and fix cgroup cleanup:
before cgroup was not cleaned up after the test.

It also removes SYSTEM macro, that only printed error, but didn't
terminate the test.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      c65267e5
    • A
      selftests/bpf: Fix const'ness in cgroup_helpers · 04c13411
      由 Andrey Ignatov 提交于 
      Lack of const in cgroup helpers signatures forces to write ugly client
code. Fix it.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      04c13411
    • A
      bpf: Sync bpf.h to tools/ · 060a7fcc
      由 Andrey Ignatov 提交于 
      Sync BPF_SOCK_OPS_TCP_LISTEN_CB related UAPI changes to tools/.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      060a7fcc
    • A
      bpf: Add BPF_SOCK_OPS_TCP_LISTEN_CB · f333ee0c
      由 Andrey Ignatov 提交于 
      Add new TCP-BPF callback that is called on listen(2) right after socket
transition to TCP_LISTEN state.

It fills the gap for listening sockets in TCP-BPF. For example BPF
program can set BPF_SOCK_OPS_STATE_CB_FLAG when socket becomes listening
and track later transition from TCP_LISTEN to TCP_CLOSE with
BPF_SOCK_OPS_STATE_CB callback.

Before there was no way to do it with TCP-BPF and other options were
much harder to work with. E.g. socket state tracking can be done with
tracepoints (either raw or regular) but they can't be attached to cgroup
and their lifetime has to be managed separately.
Signed-off-by: NAndrey Ignatov <rdna@fb.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      f333ee0c
    • D
      Merge branch 'mlxsw-VRRP' · f5c64e56
      由 David S. Miller 提交于 
      Ido Schimmel says:

====================
mlxsw: Add VRRP support

When a router that is acting as the default gateway of a host stops
functioning, the host will encounter packet loss until the router starts
functioning again.

To increase the reliability of the default gateway without performing
reconfiguration on the host, a host can use a Virtual Router Redundancy
Protocol (VRRP) Router. This virtual router is composed from several
routers where only one is actually forwarding packets from the host (the
master router) while the other routers act as backup routers. The
election of the master router is determined by the VRRP protocol [1].

Packets addressed to the virtual router are always sent to the virtual
router MAC address (IPv4: 00-00-5E-00-01-XX, IPv6: 00-00-5E-00-02-XX).
Such packets can only be accepted by the master router and must be
discarded by the backup routers.

In Linux, VRRP is usually implemented by configuring a macvlan with the
virtual router MAC on top of the router interface that is connected to
the host / LAN. The macvlan on the master router is assigned the virtual
IP (VIP) that the host uses as its gateway.

In order to support VRRP in mlxsw, we first need to enable macvlan upper
devices on top of mlxsw netdevs and their uppers. This is done by the
first patch, which also takes care of sanitizing macvlan configurations
that are not currently supported by the driver.

The second patch directs packets with destination MAC addresses as the
macvlans to the router so that they will undergo an L3 lookup. This is
consistent with the kernel's behavior where the macvlan's Rx handler
will re-inject such packets to the Rx path so that they will be picked
up by the IPvX protocol handlers and undergo an L3 lookup. Note that the
driver prevents the macvlans from being enslaved to other devices, to
ensure the packets will be picked up by the protocol handler and not by
another Rx handler.

The third patch adds packet traps for VRRP control packets for both IPv4
and IPv6. Finally, the last patch optimizes the reception of VRRP MACs
by potentially skipping one L2 lookup for them.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f5c64e56
    • I
      mlxsw: spectrum_router: Optimize processing of VRRP MACs · c3a49540
      由 Ido Schimmel 提交于 
      Hosts using a VRRP router send their packets with a destination MAC of
the VRRP router which is of the following form [1]:

IPv4 - 00-00-5E-00-01-{VRID}
IPv6 - 00-00-5E-00-02-{VRID}

Where VRID is the ID of the virtual router. Such packets are directed to
the router block in the ASIC by an FDB entry that was added in the
previous patch.

However, in certain cases it is possible to skip this FDB lookup and
send such packets directly to the router. This is accomplished by adding
these special MAC addresses to the RIF cache. If the cache is hit, the
packet will skip the L2 lookup and ingress the router with the RIF
specified in the cache entry.

1. https://tools.ietf.org/html/rfc5798#section-7.3Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Reviewed-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c3a49540
    • I
      mlxsw: spectrum: Add VRRP traps · 11566d34
      由 Ido Schimmel 提交于 
      Virtual Router Redundancy Protocol packets are used to communicate the
state of the Master router associated with the virtual router ID (VRID).

These are link-local multicast packets sent with IP protocol 112 that
are trapped in the router block in the ASIC.

Add a trap for these packets and mark the trapped packets to prevent
them from potentially being re-flooded by the bridge driver.
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Reviewed-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      11566d34
    • I
      mlxsw: spectrum_router: Direct macvlans' MACs to router · 2db99378
      由 Ido Schimmel 提交于 
      An IP packet received on a netdev with a macvlan upper whose MAC matches
the packet's destination MAC will be re-injected to the Rx path as if it
was received by the macvlan, and perform an L3 lookup.

Reflect this functionality to the ASIC by programming FDB entries that
will direct MACs of macvlan uppers to the router.

In a similar fashion to router interfaces (RIFs) that are programmed
upon the addition of the first IP address on an interface and destroyed
upon the removal of the last IP address, the FDB entries for the macvlan
are added and destroyed based on the addition of the first and removal
of the last IP address on the macvlan.
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Reviewed-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2db99378
    • I
      mlxsw: spectrum: Enable macvlan upper devices · c5516185
      由 Ido Schimmel 提交于 
      In order to allow more unicast MAC addresses (e.g., VRRP virtual MAC) to
be directed to the router we need to enable macvlan uppers on top of
mlxsw netdevs.

Allow macvlan upper devices on top of mlxsw netdevs and sanitize
configurations that can't work. For example, a macvlan can't be enslaved
to a bridge as without ACLs the device doesn't take the destination MAC
into account when classifying a packet to a bridge instance (i.e., a
FID).
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Reviewed-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c5516185
    • Y
      tcp: remove redundant rcv_nxt update · ff0432e5
      由 Yafang Shao 提交于 
      tcp_rcv_nxt_update() is already executed in tcp_data_queue().
This line is redundant.

See bellow,
	tcp_queue_rcv
		tcp_rcv_nxt_update(tcp_sk(sk), TCP_SKB_CB(skb)->end_seq);
	tcp_rcv_nxt_update(tp, TCP_SKB_CB(skb)->end_seq); <<<< redundant
Signed-off-by: NYafang Shao <laoar.shao@gmail.com>
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ff0432e5
  5. 14 7月, 2018 17 次提交
  7. 13 7月, 2018 2 次提交