1. 16 Jul, 2018 8 commits
    • Ilya Lesokhin's avatar
      net: Add TLS RX offload feature · 14136564
      Ilya Lesokhin authored
      This patch adds a netdev feature to configure TLS RX inline crypto offload.
      Signed-off-by: default avatarIlya Lesokhin <ilyal@mellanox.com>
      Signed-off-by: default avatarBoris Pismenny <borisp@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      14136564
    • Boris Pismenny's avatar
      net: Add decrypted field to skb · 784abe24
      Boris Pismenny authored
      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: default avatarBoris Pismenny <borisp@mellanox.com>
      Signed-off-by: default avatarIlya Lesokhin <ilyal@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      784abe24
    • David S. Miller's avatar
      Merge branch 'mvpp2-add-debugfs-interface' · cc98419a
      David S. Miller authored
      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: default avatarDavid S. Miller <davem@davemloft.net>
      cc98419a
    • Maxime Chevallier's avatar
      net: mvpp2: debugfs: add classifier hit counters · f9d30d5b
      Maxime Chevallier authored
      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: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f9d30d5b
    • Maxime Chevallier's avatar
      net: mvpp2: debugfs: add entries for classifier flows · dba1d918
      Maxime Chevallier authored
      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: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dba1d918
    • Maxime Chevallier's avatar
      net: mvpp2: debugfs: add hit counter stats for Header Parser entries · 1203341c
      Maxime Chevallier authored
      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: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1203341c
    • Maxime Chevallier's avatar
      net: mvpp2: add a debugfs interface for the Header Parser · 21da57a2
      Maxime Chevallier authored
      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: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      21da57a2
    • Antoine Tenart's avatar
      net: mvpp2: switch to SPDX identifiers · f1e37e31
      Antoine Tenart authored
      Use the appropriate SPDX license identifiers and drop the license text.
      This patch is only cosmetic.
      Signed-off-by: default avatarAntoine Tenart <antoine.tenart@bootlin.com>
      Signed-off-by: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f1e37e31
  2. 15 Jul, 2018 1 commit
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next · 2aa4a337
      David S. Miller authored
      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: default avatarDavid S. Miller <davem@davemloft.net>
      2aa4a337
  3. 14 Jul, 2018 20 commits
  4. 13 Jul, 2018 11 commits