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  1. 26 Jun, 2019 21 commits
  3. 25 Jun, 2019 6 commits
    • Roman Mashak's avatar
      tc-testing: add ingress qdisc tests · 2f8776f0
      Roman Mashak authored 
      Signed-off-by: default avatarRoman Mashak <mrv@mojatatu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2f8776f0
    • Jon Maloy's avatar
      tipc: rename function msg_get_wrapped() to msg_inner_hdr() · a7dc51ad
      Jon Maloy authored 
      We rename the inline function msg_get_wrapped() to the more
comprehensible msg_inner_hdr().
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a7dc51ad
    • Jon Maloy's avatar
      tipc: eliminate unnecessary skb expansion during retransmission · 20c67312
      Jon Maloy authored 
      We increase the allocated headroom for the buffer copies to be
retransmitted. This eliminates the need for the lower stack levels
(UDP/IP/L2) to expand the headroom in order to add their own headers.
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      20c67312
    • Jon Maloy's avatar
      tipc: simplify stale link failure criteria · 77cf8edb
      Jon Maloy authored 
      In commit a4dc70d4 ("tipc: extend link reset criteria for stale
packet retransmission") we made link retransmission failure events
dependent on the link tolerance, and not only of the number of failed
retransmission attempts, as we did earlier. This works well. However,
keeping the original, additional criteria of 99 failed retransmissions
is now redundant, and may in some cases lead to failure detection
times in the order of minutes instead of the expected 1.5 sec link
tolerance value.

We now remove this criteria altogether.
Acked-by: default avatarYing Xue <ying.xue@windriver.com>
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      77cf8edb
    • Lucas Bates's avatar
      tc-testing: Restore original behaviour for namespaces in tdc · 489ce2f4
      Lucas Bates authored 
      This patch restores the original behaviour for tdc prior to the
introduction of the plugin system, where the network namespace
functionality was split from the main script.

It introduces the concept of required plugins for testcases,
and will automatically load any plugin that isn't already
enabled when said plugin is required by even one testcase.

Additionally, the -n option for the nsPlugin is deprecated
so the default action is to make use of the namespaces.
Instead, we introduce -N to not use them, but still create
the veth pair.

buildebpfPlugin's -B option is also deprecated.

If a test cases requires the features of a specific plugin
in order to pass, it should instead include a new key/value
pair describing plugin interactions:

        "plugins": {
                "requires": "buildebpfPlugin"
        },

A test case can have more than one required plugin: a list
can be inserted as the value for 'requires'.
Signed-off-by: default avatarLucas Bates <lucasb@mojatatu.com>
Acked-by: default avatarDavide Caratti <dcaratti@redhat.com>
Tested-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      489ce2f4
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next · 27d92807
      David S. Miller authored 
      Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patches contains Netfilter updates for net-next:

1) .br_defrag indirection depends on CONFIG_NF_DEFRAG_IPV6, from wenxu.

2) Remove unnecessary memset() in ipset, from Florent Fourcot.

3) Merge control plane addition and deletion in ipset, also from Florent.

4) A few missing check for nla_parse() in ipset, from Aditya Pakki
   and Jozsef Kadlecsik.

5) Incorrect cleanup in error path of xt_set version 3, from Jozsef.

6) Memory accounting problems when resizing in ipset, from Stefano Brivio.

7) Jozsef updates his email to @netfilter.org, this batch comes with a
   conflict resolution with recent SPDX header updates.

8) Add to create custom conntrack expectations via nftables, from
   Stephane Veyret.

9) A lookup optimization for conntrack, from Florian Westphal.

10) Check for supported flags in xt_owner.

11) Support for pernet sysctl in br_netfilter, patches
    from Christian Brauner.

12) Patches to move common synproxy infrastructure to nf_synproxy.c,
    to prepare the synproxy support for nf_tables, patches from
    Fernando Fernandez Mancera.

13) Support to restore expiration time in set element, from Laura Garcia.

14) Fix recent rewrite of netfilter IPv6 to avoid indirections
    when CONFIG_IPV6 is unset, from Arnd Bergmann.

15) Always reset vlan tag on skbuff fraglist when refragmenting in
    bridge conntrack, from wenxu.

16) Support to match IPv4 options in nf_tables, from Stephen Suryaputra.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      27d92807
  5. 24 Jun, 2019 13 commits
    • Pablo Neira Ayuso's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next · 1c5ba67d
      Pablo Neira Ayuso authored 
      Resolve conflict between d2912cb1 ("treewide: Replace GPLv2
boilerplate/reference with SPDX - rule 500") removing the GPL disclaimer
and fe03d474 ("Update my email address") which updates Jozsef
Kadlecsik's email.
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      1c5ba67d
    • David S. Miller's avatar
      Merge branch 'cxgb4-Reference-count-MPS-TCAM-entries-within-a-PF' · 045df37e
      David S. Miller authored 
      Raju Rangoju says:

====================
cxgb4: Reference count MPS TCAM entries within a PF

Firmware reference counts the MPS TCAM entries by PF and VF,
but it does not do it for usage within a PF or VF. This patch
adds the support to track MPS TCAM entries within a PF.

v2->v3:
 Fixed the compiler errors due to incorrect patch
 Also, removed the new blank line at EOF
v1->v2:
 Use refcount_t type instead of atomic_t for mps reference count
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      045df37e
    • Raju Rangoju's avatar
      cxgb4: Add MPS refcounting for alloc/free mac filters · f9f329ad
      Raju Rangoju authored 
      This patch adds reference counting support for
alloc/free mac filters
Signed-off-by: default avatarRaju Rangoju <rajur@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f9f329ad
    • Raju Rangoju's avatar
      cxgb4: Add MPS TCAM refcounting for cxgb4 change mac · 2f0b9406
      Raju Rangoju authored 
      This patch adds TCAM reference counting
support for cxgb4 change mac path
Signed-off-by: default avatarRaju Rangoju <rajur@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2f0b9406
    • Raju Rangoju's avatar
      cxgb4: Add MPS TCAM refcounting for raw mac filters · 5fab5158
      Raju Rangoju authored 
      This patch adds TCAM reference counting
support for raw mac filters.
Signed-off-by: default avatarRaju Rangoju <rajur@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5fab5158
    • Raju Rangoju's avatar
      cxgb4: Re-work the logic for mps refcounting · 28b38705
      Raju Rangoju authored 
      Remove existing mps refcounting code which was
added only for encap filters and add necessary
data structures/functions to support mps reference
counting for all the mac filters. Also add wrapper
functions for allocating and freeing encap mac
filters.
Signed-off-by: default avatarRaju Rangoju <rajur@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      28b38705
    • Icenowy Zheng's avatar
      net: stmmac: sun8i: force select external PHY when no internal one · 0fec7e72
      Icenowy Zheng authored 
      The PHY selection bit also exists on SoCs without an internal PHY; if it's
set to 1 (internal PHY, default value) then the MAC will not make use of
any PHY on such SoCs.

This problem appears when adapting for H6, which has no real internal PHY
(the "internal PHY" on H6 is not on-die, but on a co-packaged AC200 chip,
connected via RMII interface at GPIO bank A).

Force the PHY selection bit to 0 when the SOC doesn't have an internal PHY,
to address the problem of a wrong default value.
Signed-off-by: default avatarIcenowy Zheng <icenowy@aosc.io>
Signed-off-by: default avatarOndrej Jirman <megous@megous.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0fec7e72
    • Icenowy Zheng's avatar
      net: stmmac: sun8i: add support for Allwinner H6 EMAC · adadd38c
      Icenowy Zheng authored 
      The EMAC on Allwinner H6 is just like the one on A64. The "internal PHY" on
H6 is on a co-packaged AC200 chip, and it's not really internal (it's
connected via RMII at PA GPIO bank).

Add support for the Allwinner H6 EMAC in the dwmac-sun8i driver.
Signed-off-by: default avatarIcenowy Zheng <icenowy@aosc.io>
Signed-off-by: default avatarOndrej Jirman <megous@megous.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      adadd38c
    • David S. Miller's avatar
      Merge branch 'cached-route-listings' · dcdfa50e
      David S. Miller authored 
      Stefano Brivio says:

====================
Fix listing (IPv4, IPv6) and flushing (IPv6) of cached route exceptions

For IPv6 cached routes, the commands 'ip -6 route list cache' and
'ip -6 route flush cache' don't work at all after route exceptions have
been moved to a separate hash table in commit 2b760fcf ("ipv6: hook
up exception table to store dst cache").

For IPv4 cached routes, the command 'ip route list cache' has also
stopped working in kernel 3.5 after commit 4895c771 ("ipv4: Add FIB
nexthop exceptions.") introduced storage for route exceptions as a
separate entity.

Fix this by allowing userspace to clearly request cached routes with
the RTM_F_CLONED flag used as a filter (in conjuction with strict
checking) and by retrieving and dumping cached routes if requested.

If strict checking is not requested (iproute2 < 5.0.0), we don't have a
way to consistently filter results on other selectors (e.g. on tables),
so skip filtering entirely and dump both regular routes and exceptions.

For IPv4, cache flushing uses a completely different mechanism, so it
wasn't affected. Listing of exception routes (modified routes pre-3.5) was
tested against these versions of kernel and iproute2:

                    iproute2
kernel         4.14.0   4.15.0   4.19.0   5.0.0   5.1.0
 3.5-rc4         +        +        +        +       +
 4.4
 4.9
 4.14
 4.15
 4.19
 5.0
 5.1
 fixed           +        +        +        +       +

For IPv6, a separate iproute2 patch is required. Versions of iproute2
and kernel tested:

                    iproute2
kernel             4.14.0   4.15.0   4.19.0   5.0.0   5.1.0    5.1.0, patched
 3.18    list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.4     list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.9     list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.14    list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.15    list
         flush
 4.19    list
         flush
 5.0     list
         flush
 5.1     list
         flush
 with    list        +        +        +        +       +            +
 fix     flush       +        +        +                             +

v7: Make sure r->rtm_tos is initialised in 3/11, move loop over nexthop
    objects in 4/11, add comments about usage of "skip" counters in commit
    messages of 4/11 and 8/11

v6: Target for net-next, rebase and adapt to nexthop objects for IPv6 paths.
    Merge selftests into this series (as they were addressed for net-next).
    A number of minor changes detailed in logs of single patches.

v5: Skip filtering altogether if no strict checking is requested: selecting
    routes or exceptions only would be inconsistent with the fact we can't
    filter on tables. Drop 1/8 (non-strict dump filter function no longer
    needed), replace 2/8 (don't use NLM_F_MATCH, decide to skip routes or
    exceptions in filter function), drop 6/8 (2/8 is enough for IPv6 too).
    Introduce dump_routes and dump_exceptions flags in filter, adapt other
    patches to that.

v4: Fix the listing issue also for IPv4, making the behaviour consistent
    with IPv6. Honour NLM_F_MATCH as per RFC 3549 and allow usage of
    RTM_F_CLONED filter. Split patches into smaller logical changes.

v3: Drop check on RTM_F_CLONED and rework logic of return values of
    rt6_dump_route()

v2: Add count of routes handled in partial dumps, and skip them, in patch 1/2.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dcdfa50e
    • Stefano Brivio's avatar
      selftests: pmtu: Make list_flush_ipv6_exception test more demanding · b964641e
      Stefano Brivio authored 
      Instead of just listing and flushing two cached exceptions, create
a relatively big number of them, and count how many are listed. Single
netlink dump messages contain approximately 25 entries each, and this
way we can make sure the partial dump tracking mechanism is working
properly.

While at it, also ensure that no cached routes can be listed after
flush, and remove 'sleep 1' calls, they are not actually needed.

v7: No changes

v6:
  - Merge this patch into series including fix, as it's also targeted
    for net-next. No actual changes
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b964641e
    • Stefano Brivio's avatar
      selftests: pmtu: Introduce list_flush_ipv4_exception test case · de755a85
      Stefano Brivio authored 
      This test checks that route exceptions can be successfully listed and
flushed using ip -6 route {list,flush} cache.

v7: No changes

v6:
  - Merge this patch into series including fix, as it's also targeted
    for net-next
  - Drop left-over print of 'ip route list cache | wc -l'
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      de755a85
    • Stefano Brivio's avatar
      ip6_fib: Don't discard nodes with valid routing information in fib6_locate_1() · 40cb35d5
      Stefano Brivio authored 
      When we perform an inexact match on FIB nodes via fib6_locate_1(), longer
prefixes will be preferred to shorter ones. However, it might happen that
a node, with higher fn_bit value than some other, has no valid routing
information.

In this case, we'll pick that node, but it will be discarded by the check
on RTN_RTINFO in fib6_locate(), and we might miss nodes with valid routing
information but with lower fn_bit value.

This is apparent when a routing exception is created for a default route:
 # ip -6 route list
 fc00:1::/64 dev veth_A-R1 proto kernel metric 256 pref medium
 fc00:2::/64 dev veth_A-R2 proto kernel metric 256 pref medium
 fc00:4::1 via fc00:2::2 dev veth_A-R2 metric 1024 pref medium
 fe80::/64 dev veth_A-R1 proto kernel metric 256 pref medium
 fe80::/64 dev veth_A-R2 proto kernel metric 256 pref medium
 default via fc00:1::2 dev veth_A-R1 metric 1024 pref medium
 # ip -6 route list cache
 fc00:4::1 via fc00:2::2 dev veth_A-R2 metric 1024 expires 593sec mtu 1500 pref medium
 fc00:3::1 via fc00:1::2 dev veth_A-R1 metric 1024 expires 593sec mtu 1500 pref medium
 # ip -6 route flush cache    # node for default route is discarded
 Failed to send flush request: No such process
 # ip -6 route list cache
 fc00:3::1 via fc00:1::2 dev veth_A-R1 metric 1024 expires 586sec mtu 1500 pref medium

Check right away if the node has a RTN_RTINFO flag, before replacing the
'prev' pointer, that indicates the longest matching prefix found so far.

Fixes: 38fbeeee ("ipv6: prepare fib6_locate() for exception table")
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      40cb35d5
    • Stefano Brivio's avatar
      ipv6: Dump route exceptions if requested · 1e47b483
      Stefano Brivio authored 
      Since commit 2b760fcf ("ipv6: hook up exception table to store dst
cache"), route exceptions reside in a separate hash table, and won't be
found by walking the FIB, so they won't be dumped to userspace on a
RTM_GETROUTE message.

This causes 'ip -6 route list cache' and 'ip -6 route flush cache' to
have no function anymore:

 # ip -6 route get fc00:3::1
 fc00:3::1 via fc00:1::2 dev veth_A-R1 src fc00:1::1 metric 1024 expires 539sec mtu 1400 pref medium
 # ip -6 route get fc00:4::1
 fc00:4::1 via fc00:2::2 dev veth_A-R2 src fc00:2::1 metric 1024 expires 536sec mtu 1500 pref medium
 # ip -6 route list cache
 # ip -6 route flush cache
 # ip -6 route get fc00:3::1
 fc00:3::1 via fc00:1::2 dev veth_A-R1 src fc00:1::1 metric 1024 expires 520sec mtu 1400 pref medium
 # ip -6 route get fc00:4::1
 fc00:4::1 via fc00:2::2 dev veth_A-R2 src fc00:2::1 metric 1024 expires 519sec mtu 1500 pref medium

because iproute2 lists cached routes using RTM_GETROUTE, and flushes them
by listing all the routes, and deleting them with RTM_DELROUTE one by one.

If cached routes are requested using the RTM_F_CLONED flag together with
strict checking, or if no strict checking is requested (and hence we can't
consistently apply filters), look up exceptions in the hash table
associated with the current fib6_info in rt6_dump_route(), and, if present
and not expired, add them to the dump.

We might be unable to dump all the entries for a given node in a single
message, so keep track of how many entries were handled for the current
node in fib6_walker, and skip that amount in case we start from the same
partially dumped node.

When a partial dump restarts, as the starting node might change when
'sernum' changes, we have no guarantee that we need to skip the same
amount of in-node entries. Therefore, we need two counters, and we need to
zero the in-node counter if the node from which the dump is resumed
differs.

Note that, with the current version of iproute2, this only fixes the
'ip -6 route list cache': on a flush command, iproute2 doesn't pass
RTM_F_CLONED and, due to this inconsistency, 'ip -6 route flush cache' is
still unable to fetch the routes to be flushed. This will be addressed in
a patch for iproute2.

To flush cached routes, a procfs entry could be introduced instead: that's
how it works for IPv4. We already have a rt6_flush_exception() function
ready to be wired to it. However, this would not solve the issue for
listing.

Versions of iproute2 and kernel tested:

                    iproute2
kernel             4.14.0   4.15.0   4.19.0   5.0.0   5.1.0    5.1.0, patched
 3.18    list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.4     list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.9     list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.14    list        +        +        +        +       +            +
         flush       +        +        +        +       +            +
 4.15    list
         flush
 4.19    list
         flush
 5.0     list
         flush
 5.1     list
         flush
 with    list        +        +        +        +       +            +
 fix     flush       +        +        +                             +

v7:
  - Explain usage of "skip" counters in commit message (suggested by
    David Ahern)

v6:
  - Rebase onto net-next, use recently introduced nexthop walker
  - Make rt6_nh_dump_exceptions() a separate function (suggested by David
    Ahern)

v5:
  - Use dump_routes and dump_exceptions from filter, ignore NLM_F_MATCH,
    update test results (flushing works with iproute2 < 5.0.0 now)

v4:
  - Split NLM_F_MATCH and strict check handling in separate patches
  - Filter routes using RTM_F_CLONED: if it's not set, only return
    non-cached routes, and if it's set, only return cached routes:
    change requested by David Ahern and Martin Lau. This implies that
    iproute2 needs a separate patch to be able to flush IPv6 cached
    routes. This is not ideal because we can't fix the breakage caused
    by 2b760fcf entirely in kernel. However, two years have passed
    since then, and this makes it more tolerable

v3:
  - More descriptive comment about expired exceptions in rt6_dump_route()
  - Swap return values of rt6_dump_route() (suggested by Martin Lau)
  - Don't zero skip_in_node in case we don't dump anything in a given pass
    (also suggested by Martin Lau)
  - Remove check on RTM_F_CLONED altogether: in the current UAPI semantic,
    it's just a flag to indicate the route was cloned, not to filter on
    routes

v2: Add tracking of number of entries to be skipped in current node after
    a partial dump. As we restart from the same node, if not all the
    exceptions for a given node fit in a single message, the dump will
    not terminate, as suggested by Martin Lau. This is a concrete
    possibility, setting up a big number of exceptions for the same route
    actually causes the issue, suggested by David Ahern.
Reported-by: default avatarJianlin Shi <jishi@redhat.com>
Fixes: 2b760fcf ("ipv6: hook up exception table to store dst cache")
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1e47b483
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