Florian Westphal [Tue, 27 Nov 2018 12:28:54 +0000 (13:28 +0100)]
xfrm: policy: fix policy hash rebuild
Dan Carpenter reports following static checker warning:
net/xfrm/xfrm_policy.c:1316 xfrm_hash_rebuild()
warn: 'dir' is out of bounds '3' vs '2'
| 1280 /* reset the bydst and inexact table in all directions */
| 1281 xfrm_hash_reset_inexact_table(net);
| 1282
| 1283 for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
| ^^^^^^^^^^^^^^^^^^^^^
|dir == XFRM_POLICY_MAX at the end of this loop.
| 1304 /* re-insert all policies by order of creation */
| 1305 list_for_each_entry_reverse(policy, &net->xfrm.policy_all, walk.all) {
[..]
| 1314 xfrm_policy_id2dir(policy->index));
| 1315 if (!chain) {
| 1316 void *p = xfrm_policy_inexact_insert(policy, dir, 0);
Fix this by updating 'dir' based on current policy. Otherwise, the
inexact policies won't be found anymore during lookup, as they get
hashed to a bogus bin.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes:
cc1bb845adc9 ("xfrm: policy: return NULL when inexact search needed")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Li RongQing [Mon, 12 Nov 2018 09:28:22 +0000 (17:28 +0800)]
xfrm6: remove BUG_ON from xfrm6_dst_ifdown
if loopback_idev is NULL pointer, and the following access of
loopback_idev will trigger panic, which is same as BUG_ON
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Thu, 15 Nov 2018 01:51:57 +0000 (02:51 +0100)]
xfrm: policy: fix netlink/pf_key policy lookups
Colin Ian King says:
Static analysis with CoverityScan found a potential issue [..]
It seems that pointer pol is set to NULL and then a check to see if it
is non-null is used to set pol to tmp; howeverm this check is always
going to be false because pol is always NULL.
Fix this and update test script to catch this. Updated script only:
./xfrm_policy.sh ; echo $?
RTNETLINK answers: No such file or directory
FAIL: ip -net ns3 xfrm policy get src 10.0.1.0/24 dst 10.0.2.0/24 dir out
RTNETLINK answers: No such file or directory
[..]
PASS: policy before exception matches
PASS: ping to .254 bypassed ipsec tunnel
PASS: direct policy matches
PASS: policy matches
1
Fixes:
6be3b0db6db ("xfrm: policy: add inexact policy search tree infrastructure")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Colin Ian King [Tue, 13 Nov 2018 14:28:42 +0000 (14:28 +0000)]
xfrm: policy: add missing indentation
There is a missing indentation before the goto statement. Add it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Colin Ian King [Tue, 13 Nov 2018 14:23:28 +0000 (14:23 +0000)]
af_key: fix indentation on declaration statement
There is an indentation issue before the declaration of xfrm_ctx. Remove
spaces and replace with a tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:41 +0000 (23:00 +0100)]
xfrm: policy: add 2nd-level saddr trees for inexact policies
This adds the fourth and final search class, containing policies
where both saddr and daddr have prefix lengths (i.e., not wildcards).
Inexact policies now end up in one of the following four search classes:
1. "Any:Any" list, containing policies where both saddr and daddr are
wildcards or have very coarse prefixes, e.g. 10.0.0.0/8 and the like.
2. "saddr:any" list, containing policies with a fixed saddr/prefixlen,
but without destination restrictions.
These lists are stored in rbtree nodes; each node contains those
policies matching saddr/prefixlen.
3. "Any:daddr" list. Similar to 2), except for policies where only the
destinations are specified.
4. "saddr:daddr" lists, containing only those policies that
match the given source/destination network.
The root of the saddr/daddr nodes gets stored in the nodes of the
'daddr' tree.
This diagram illustrates the list classes, and their
placement in the lookup hierarchy:
xfrm_pol_inexact_bin = hash(dir,type,family,if_id);
|
+---- root_d: sorted by daddr:prefix
| |
| xfrm_pol_inexact_node
| |
| +- root: sorted by saddr/prefix
| | |
| | xfrm_pol_inexact_node
| | |
| | + root: unused
| | |
| | + hhead: saddr:daddr policies
| |
| +- coarse policies and all any:daddr policies
|
+---- root_s: sorted by saddr:prefix
| |
| xfrm_pol_inexact_node
| |
| + root: unused
| |
| + hhead: saddr:any policies
|
+---- coarse policies and all any:any policies
lookup for an inexact policy returns pointers to the four relevant list
classes, after which each of the lists needs to be searched for the policy
with the higher priority.
This will only speed up lookups in case we have many policies and a
sizeable portion of these have disjunct saddr/daddr addresses.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:40 +0000 (23:00 +0100)]
xfrm: policy: store inexact policies in a tree ordered by source address
This adds the 'saddr:any' search class. It contains all policies that have
a fixed saddr/prefixlen, but 'any' destination.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:39 +0000 (23:00 +0100)]
xfrm: policy: check reinserted policies match their node
validate the re-inserted policies match the lookup node.
Policies that fail this test won't be returned in the candidate set.
This is enabled by default for now, it should not cause noticeable
reinsert slow down.
Such reinserts are needed when we have to merge an existing node
(e.g. for 10.0.0.0/28 because a overlapping subnet was added (e.g.
10.0.0.0/24), so whenever this happens existing policies have to
be placed on the list of the new node.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:38 +0000 (23:00 +0100)]
xfrm: policy: store inexact policies in a tree ordered by destination address
This adds inexact lists per destination network, stored in a search tree.
Inexact lookups now return two 'candidate lists', the 'any' policies
('any' destionations), and a list of policies that share same
daddr/prefix.
Next patch will add a second search tree for 'saddr:any' policies
so we can avoid placing those on the 'any:any' list too.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:37 +0000 (23:00 +0100)]
xfrm: policy: add inexact policy search tree infrastructure
At this time inexact policies are all searched in-order until the first
match is found. After removal of the flow cache, this resolution has
to be performed for every packetm resulting in major slowdown when
number of inexact policies is high.
This adds infrastructure to later sort inexact policies into a tree.
This only introduces a single class: any:any.
Next patch will add a search tree to pre-sort policies that
have a fixed daddr/prefixlen, so in this patch the any:any class
will still be used for all policies.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:36 +0000 (23:00 +0100)]
xfrm: policy: consider if_id when hashing inexact policy
This avoids searches of polices that cannot match in the first
place due to different interface id by placing them in different bins.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:35 +0000 (23:00 +0100)]
xfrm: policy: store inexact policies in an rhashtable
Switch packet-path lookups for inexact policies to rhashtable.
In this initial version, we now no longer need to search policies with
non-matching address family and type.
Next patch will add the if_id as well so lookups from the xfrm interface
driver only need to search inexact policies for that device.
Future patches will augment the hlist in each rhash bucket with a tree
and pre-sort policies according to daddr/prefix.
A single rhashtable is used. In order to avoid a full rhashtable walk on
netns exit, the bins get placed on a pernet list, i.e. we add almost no
cost for network namespaces that had no xfrm policies.
The inexact lists are kept in place, and policies are added to both the
per-rhash-inexact list and a pernet one.
The latter is needed for the control plane to handle migrate -- these
requests do not consider the if_id, so if we'd remove the inexact_list
now we would have to search all hash buckets and then figure
out which matching policy candidate is the most recent one -- this appears
a bit harder than just keeping the 'old' inexact list for this purpose.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:34 +0000 (23:00 +0100)]
xfrm: policy: return NULL when inexact search needed
currently policy_hash_bysel() returns the hash bucket list
(for exact policies), or the inexact list (when policy uses a prefix).
Searching this inexact list is slow, so it might be better to pre-sort
inexact lists into a tree or another data structure for faster
searching.
However, due to 'any' policies, that need to be searched in any case,
doing so will require that 'inexact' policies need to be handled
specially to decide the best search strategy. So change hash_bysel()
and return NULL if the policy can't be handled via the policy hash
table.
Right now, we simply use the inexact list when this happens, but
future patch can then implement a different strategy.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:33 +0000 (23:00 +0100)]
xfrm: policy: split list insertion into a helper
... so we can reuse this later without code duplication when we add
policy to a second inexact list.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:32 +0000 (23:00 +0100)]
xfrm: security: iterate all, not inexact lists
currently all non-socket policies are either hashed in the dst table,
or placed on the 'inexact list'. When flushing, we first walk the
table, then the (per-direction) inexact lists.
When we try and get rid of the inexact lists to having "n" inexact
lists (e.g. per-af inexact lists, or sorted into a tree), this walk
would become more complicated.
Simplify this: walk the 'all' list and skip socket policies during
traversal so we don't need to handle exact and inexact policies
separately anymore.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Florian Westphal [Wed, 7 Nov 2018 22:00:31 +0000 (23:00 +0100)]
selftests: add xfrm policy test script
add a script that adds a ipsec tunnel between two network
namespaces plus following policies:
.0/24 -> ipsec tunnel
.240/28 -> bypass
.253/32 -> ipsec tunnel
Then check that .254 bypasses tunnel (match /28 exception),
and .2 (match /24) and .253 (match direct policy) pass through the
tunnel.
Abuses iptables to check if ping did resolve an ipsec policy or not.
Also adds a bunch of 'block' rules that are not supposed to match.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Edward Cree [Thu, 8 Nov 2018 19:47:19 +0000 (19:47 +0000)]
sfc: use the new __netdev_tx_sent_queue BQL optimisation
As added in
3e59020abf0f ("net: bql: add __netdev_tx_sent_queue()"), which
see for performance rationale.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 9 Nov 2018 03:49:32 +0000 (19:49 -0800)]
Merge branch 'net-Remove-VLAN_TAG_PRESENT-from-drivers'
Michał Mirosław says:
====================
net: Remove VLAN_TAG_PRESENT from drivers
This series removes VLAN_TAG_PRESENT use from network drivers in
preparation to removing its special meaning.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Thu, 8 Nov 2018 17:44:50 +0000 (18:44 +0100)]
gianfar: remove use of VLAN_TAG_PRESENT
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Thu, 8 Nov 2018 17:44:50 +0000 (18:44 +0100)]
OVS: remove use of VLAN_TAG_PRESENT
This is a minimal change to allow removing of VLAN_TAG_PRESENT.
It leaves OVS unable to use CFI bit, as fixing this would need
a deeper surgery involving userspace interface.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Thu, 8 Nov 2018 17:44:50 +0000 (18:44 +0100)]
cnic: remove use of VLAN_TAG_PRESENT
This just removes VLAN_TAG_PRESENT use. VLAN TCI=0 special meaning is
deeply embedded in the driver code and so is left as is.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Thu, 8 Nov 2018 17:44:49 +0000 (18:44 +0100)]
i40iw: remove use of VLAN_TAG_PRESENT
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilias Apalodimas [Thu, 8 Nov 2018 15:19:55 +0000 (17:19 +0200)]
net: socionext: refactor netsec_alloc_dring()
return -ENOMEM directly instead of assigning it in a variable
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilias Apalodimas [Thu, 8 Nov 2018 15:19:54 +0000 (17:19 +0200)]
net: socionext: different approach on DMA
Current driver dynamically allocates an skb and maps it as DMA Rx
buffer. In order to prepare for upcoming XDP changes, let's introduce a
different allocation scheme.
Buffers are allocated dynamically and mapped into hardware.
During the Rx operation the driver uses build_skb() to produce the
necessary buffers for the network stack.
This change increases performance ~15% on 64b packets with smmu disabled
and ~5% with smmu enabled
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Wahren [Thu, 8 Nov 2018 13:38:21 +0000 (14:38 +0100)]
net: qca_spi: Add available buffer space verification
Interferences on the SPI line could distort the response of
available buffer space. So at least we should check that the
response doesn't exceed the maximum available buffer space.
In error case increase a new error counter and retry it later.
This behavior avoids buffer errors in the QCA7000, which
results in an unnecessary chip reset including packet loss.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Barmann [Thu, 8 Nov 2018 14:13:35 +0000 (08:13 -0600)]
sock: Reset dst when changing sk_mark via setsockopt
When setting the SO_MARK socket option, if the mark changes, the dst
needs to be reset so that a new route lookup is performed.
This fixes the case where an application wants to change routing by
setting a new sk_mark. If this is done after some packets have already
been sent, the dst is cached and has no effect.
Signed-off-by: David Barmann <david.barmann@stackpath.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 9 Nov 2018 01:22:24 +0000 (17:22 -0800)]
Merge branch 's390-qeth-next'
Julian Wiedmann says:
====================
s390/qeth: updates 2018-11-08
please apply the following qeth patches to net-next.
The first patch allows one more device type to query the FW for a MAC address,
the others are all basically just removal of duplicated or unused code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:22 +0000 (15:06 +0100)]
s390/qeth: don't process hsuid in qeth_l3_setup_netdev()
qeth_l3_setup_netdev() checks if the hsuid attribute is set on the qeth
device, and propagates it to the net_device. In the past this was needed
to pick up any hsuid that was set before allocation of the net_device.
With commit
d3d1b205e89f ("s390/qeth: allocate netdevice early") this
is no longer necessary, qeth_l3_dev_hsuid_store() always stores the
hsuid straight into dev->perm_addr.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:21 +0000 (15:06 +0100)]
s390/qeth: remove unused fallback in Layer3's MAC code
If the CREATE ADDR sent by qeth_l3_iqd_read_initial_mac() fails, its
callback sets a random MAC address on the net_device. The error then
propagates back, and qeth_l3_setup_netdev() bails out without
registering the net_device.
Any subsequent call to qeth_l3_setup_netdev() will then attempt a fresh
CREATE ADDR which either 1) also fails, or 2) sets a proper MAC address
on the net_device. Consequently, the net_device will never be registered
with a random MAC and we can drop the fallback code.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:20 +0000 (15:06 +0100)]
s390/qeth: remove two IPA command helpers
qeth_l3_send_ipa_arp_cmd() is merely a wrapper around
qeth_send_control_data() now. So push the length adjustment into
QETH_SETASS_BASE_LEN, and remove the wrapper. While at it, also remove
some redundant 0-initializations.
qeth_send_setassparms() requires that callers prepare their command
parameters, so that they can be copied into the parameter area in one
go. Skip the indirection, and just let callers set up the command
themselves.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:19 +0000 (15:06 +0100)]
s390/qeth: replace open-coded cmd setup
Call qeth_prepare_ipa_cmd() during setup of a new IPA cmd buffer, so
that it is used for all commands. Thus ARP and SNMP requests don't have
to do their own initialization.
This will now also set the proper MPC protocol version for SNMP requests
on L2 devices.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:18 +0000 (15:06 +0100)]
s390/qeth: remove card list
Re-implement the card-by-RDEV lookup by using device model concepts, and
remove the now redundant list of all qeth card instances in the system.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:17 +0000 (15:06 +0100)]
s390/qeth: unify transmit code
Since commit
82bf5c0867f6 ("s390/qeth: add support for IPv6 TSO"),
qeth_xmit() also knows how to build TSO packets and is practically
identical to qeth_l3_xmit().
Convert qeth_l3_xmit() into a thin wrapper that merely strips the
L2 header off a packet, and calls qeth_xmit() for the actual
TX processing.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:16 +0000 (15:06 +0100)]
s390/qeth: handle af_iucv skbs in qeth_l3_fill_header()
Filling the HW header from one single function will make it easier to
rip out all the duplicated transmit code in qeth_l3_xmit(). On top, this
saves one conditional branch in the TSO path.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Thu, 8 Nov 2018 14:06:15 +0000 (15:06 +0100)]
s390/qeth: utilize virtual MAC for Layer2 OSD devices
By default, READ MAC on a Layer2 OSD device returns the adapter's
burnt-in MAC address. Given the default scenario of many virtual devices
on the same adapter, qeth can't make any use of this address and
therefore skips the READ MAC call for this device type.
But in some configurations, the READ MAC command for a Layer2 OSD device
actually returns a pre-provisioned, virtual MAC address. So enable the
READ MAC code to detect this situation, and let the L2 subdriver
call READ MAC for OSD devices.
This also removes the QETH_LAYER2_MAC_READ flag, which protects L2
devices against calling READ MAC multiple times. Instead protect the
whole call to qeth_l2_request_initial_mac().
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Li RongQing [Thu, 8 Nov 2018 12:40:20 +0000 (20:40 +0800)]
openvswitch: remove BUG_ON from get_dpdev
if local is NULL pointer, and the following access of local's
dev will trigger panic, which is same as BUG_ON
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 9 Nov 2018 01:13:09 +0000 (17:13 -0800)]
Merge branch 'ICMP-error-handling-for-UDP-tunnels'
Stefano Brivio says:
====================
ICMP error handling for UDP tunnels
This series introduces ICMP error handling for UDP tunnels and
encapsulations and related selftests. We need to handle ICMP errors to
support PMTU discovery and route redirection -- this support is entirely
missing right now:
- patch 1/11 adds a socket lookup for UDP tunnels that use, by design,
the same destination port on both endpoints -- i.e. VXLAN and GENEVE
- patches 2/11 to 7/11 are specific to VxLAN and GENEVE
- patches 8/11 and 9/11 add infrastructure for lookup of encapsulations
where sent packets cannot be matched via receiving socket lookup, i.e.
FoU and GUE
- patches 10/11 and 11/11 are specific to FoU and GUE
v2: changes are listed in the single patches
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:24 +0000 (12:19 +0100)]
selftests: pmtu: Introduce FoU and GUE PMTU exceptions tests
Introduce eight tests, for FoU and GUE, with IPv4 and IPv6 payload,
on IPv4 and IPv6 transport, that check that PMTU exceptions are created
with the right value when exceeding the MTU on a link of the path.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:23 +0000 (12:19 +0100)]
fou, fou6: ICMP error handlers for FoU and GUE
As the destination port in FoU and GUE receiving sockets doesn't
necessarily match the remote destination port, we can't associate errors
to the encapsulating tunnels with a socket lookup -- we need to blindly
try them instead. This means we don't even know if we are handling errors
for FoU or GUE without digging into the packets.
Hence, implement a single handler for both, one for IPv4 and one for IPv6,
that will check whether the packet that generated the ICMP error used a
direct IP encapsulation or if it had a GUE header, and send the error to
the matching protocol handler, if any.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:22 +0000 (12:19 +0100)]
udp: Support for error handlers of tunnels with arbitrary destination port
ICMP error handling is currently not possible for UDP tunnels not
employing a receiving socket with local destination port matching the
remote one, because we have no way to look them up.
Add an err_handler tunnel encapsulation operation that can be exported by
tunnels in order to pass the error to the protocol implementing the
encapsulation. We can't easily use a lookup function as we did for VXLAN
and GENEVE, as protocol error handlers, which would be in turn called by
implementations of this new operation, handle the errors themselves,
together with the tunnel lookup.
Without a socket, we can't be sure which encapsulation error handler is
the appropriate one: encapsulation handlers (the ones for FoU and GUE
introduced in the next patch, e.g.) will need to check the new error codes
returned by protocol handlers to figure out if errors match the given
encapsulation, and, in turn, report this error back, so that we can try
all of them in __udp{4,6}_lib_err_encap_no_sk() until we have a match.
v2:
- Name all arguments in err_handler prototypes (David Miller)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:21 +0000 (12:19 +0100)]
net: Convert protocol error handlers from void to int
We'll need this to handle ICMP errors for tunnels without a sending socket
(i.e. FoU and GUE). There, we might have to look up different types of IP
tunnels, registered as network protocols, before we get a match, so we
want this for the error handlers of IPPROTO_IPIP and IPPROTO_IPV6 in both
inet_protos and inet6_protos. These error codes will be used in the next
patch.
For consistency, return sensible error codes in protocol error handlers
whenever handlers can't handle errors because, even if valid, they don't
match a protocol or any of its states.
This has no effect on existing error handling paths.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:20 +0000 (12:19 +0100)]
selftests: pmtu: Introduce tests for IPv4/IPv6 over GENEVE over IPv4/IPv6
Use a router between endpoints, implemented via namespaces, set a low MTU
between router and destination endpoint, exceed it and check PMTU value in
route exceptions.
v2:
- Introduce IPv4 tests right away, if iproute2 doesn't support the 'df'
link option they will be skipped (David Ahern)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:19 +0000 (12:19 +0100)]
geneve: Allow configuration of DF behaviour
draft-ietf-nvo3-geneve-08 says:
It is strongly RECOMMENDED that Path MTU Discovery ([RFC1191],
[RFC1981]) be used by setting the DF bit in the IP header when Geneve
packets are transmitted over IPv4 (this is the default with IPv6).
Now that ICMP error handling is working for GENEVE, we can comply with
this recommendation.
Make this configurable, though, to avoid breaking existing setups. By
default, DF won't be set. It can be set or inherited from inner IPv4
packets. If it's configured to be inherited and we are encapsulating IPv6,
it will be set.
This only applies to non-lwt tunnels: if an external control plane is
used, tunnel key will still control the DF flag.
v2:
- DF behaviour configuration only applies for non-lwt tunnels, apply DF
setting only if (!geneve->collect_md) in geneve_xmit_skb()
(Stephen Hemminger)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:18 +0000 (12:19 +0100)]
geneve: ICMP error lookup handler
Export an encap_err_lookup() operation to match an ICMP error against a
valid VNI.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:17 +0000 (12:19 +0100)]
selftests: pmtu: Introduce tests for IPv4/IPv6 over VXLAN over IPv4/IPv6
Use a router between endpoints, implemented via namespaces, set a low MTU
between router and destination endpoint, exceed it and check PMTU value in
route exceptions.
v2:
- Change all occurrences of VxLAN to VXLAN (Jiri Benc)
- Introduce IPv4 tests right away, if iproute2 doesn't support the 'df'
link option they will be skipped (David Ahern)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:16 +0000 (12:19 +0100)]
vxlan: Allow configuration of DF behaviour
Allow users to set the IPv4 DF bit in outgoing packets, or to inherit its
value from the IPv4 inner header. If the encapsulated protocol is IPv6 and
DF is configured to be inherited, always set it.
For IPv4, inheriting DF from the inner header was probably intended from
the very beginning judging by the comment to vxlan_xmit(), but it wasn't
actually implemented -- also because it would have done more harm than
good, without handling for ICMP Fragmentation Needed messages.
According to RFC 7348, "Path MTU discovery MAY be used". An expired RFC
draft, draft-saum-nvo3-pmtud-over-vxlan-05, whose purpose was to describe
PMTUD implementation, says that "is a MUST that Vxlan gateways [...]
SHOULD set the DF-bit [...]", whatever that means.
Given this background, the only sane option is probably to let the user
decide, and keep the current behaviour as default.
This only applies to non-lwt tunnels: if an external control plane is
used, tunnel key will still control the DF flag.
v2:
- DF behaviour configuration only applies for non-lwt tunnels, move DF
setting to if (!info) block in vxlan_xmit_one() (Stephen Hemminger)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:15 +0000 (12:19 +0100)]
vxlan: ICMP error lookup handler
Export an encap_err_lookup() operation to match an ICMP error against a
valid VNI.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 8 Nov 2018 11:19:14 +0000 (12:19 +0100)]
udp: Handle ICMP errors for tunnels with same destination port on both endpoints
For both IPv4 and IPv6, if we can't match errors to a socket, try
tunnels before ignoring them. Look up a socket with the original source
and destination ports as found in the UDP packet inside the ICMP payload,
this will work for tunnels that force the same destination port for both
endpoints, i.e. VXLAN and GENEVE.
Actually, lwtunnels could break this assumption if they are configured by
an external control plane to have different destination ports on the
endpoints: in this case, we won't be able to trace ICMP messages back to
them.
For IPv6 redirect messages, call ip6_redirect() directly with the output
interface argument set to the interface we received the packet from (as
it's the very interface we should build the exception on), otherwise the
new nexthop will be rejected. There's no such need for IPv4.
Tunnels can now export an encap_err_lookup() operation that indicates a
match. Pass the packet to the lookup function, and if the tunnel driver
reports a matching association, continue with regular ICMP error handling.
v2:
- Added newline between network and transport header sets in
__udp{4,6}_lib_err_encap() (David Miller)
- Removed redundant skb_reset_network_header(skb); in
__udp4_lib_err_encap()
- Removed redundant reassignment of iph in __udp4_lib_err_encap()
(Sabrina Dubroca)
- Edited comment to __udp{4,6}_lib_err_encap() to reflect the fact this
won't work with lwtunnels configured to use asymmetric ports. By the way,
it's VXLAN, not VxLAN (Jiri Benc)
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 8 Nov 2018 10:32:02 +0000 (10:32 +0000)]
net: hns3: fix spelling mistake, "assertting" -> "asserting"
Trivial fix to spelling mistake in dev_err error message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ganesh Goudar [Thu, 8 Nov 2018 08:51:07 +0000 (14:21 +0530)]
cxgb4: Add new T6 PCI device ids 0x608a
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Li RongQing [Thu, 8 Nov 2018 06:58:07 +0000 (14:58 +0800)]
net/ipv6: compute anycast address hash only if dev is null
avoid to compute the hash value if dev is not null, since
hash value is not used
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
YueHaibing [Thu, 8 Nov 2018 02:08:43 +0000 (02:08 +0000)]
net: bcmgenet: return correct value 'ret' from bcmgenet_power_down
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/broadcom/genet/bcmgenet.c: In function 'bcmgenet_power_down':
drivers/net/ethernet/broadcom/genet/bcmgenet.c:1136:6: warning:
variable 'ret' set but not used [-Wunused-but-set-variable]
bcmgenet_power_down should return 'ret' instead of 0.
Fixes:
ca8cf341903f ("net: bcmgenet: propagate errors from bcmgenet_power_down")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 9 Nov 2018 00:19:48 +0000 (16:19 -0800)]
Merge branch 'net-sched-prepare-for-more-Qdisc-offloads'
Jakub Kicinski says:
====================
net: sched: prepare for more Qdisc offloads
This series refactors the "switchdev" Qdisc offloads a little. We have
a few Qdiscs which can be fully offloaded today to the forwarding plane
of switching devices.
First patch adds a helper for handing statistic dumps, the code seems
to be copy pasted between PRIO and RED. Second patch removes unnecessary
parameter from RED offload function. Third patch makes the MQ offload
use the dump helper which helps it behave much like PRIO and RED when
it comes to the TCQ_F_OFFLOADED flag. Patch 4 adds a graft helper,
similar to the dump helper.
Patch 5 is unrelated to offloads, qdisc_graft() code seemed ripe for a
small refactor - no functional changes there.
Last two patches move the qdisc_put() call outside of the sch_tree_lock
section for RED and PRIO. The child Qdiscs will get removed from the
hierarchy under the lock, but having the put (and potentially destroy)
called outside of the lock helps offload which may choose to sleep,
and it should generally lower the Qdisc change impact.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:40 +0000 (17:33 -0800)]
net: sched: prio: delay destroying child qdiscs on change
Move destroying of the old child qdiscs outside of the sch_tree_lock()
section. This should improve the software qdisc replace but is even
more important for offloads. Calling offloads under a spin lock is
best avoided, and child's destroy would be called under sch_tree_lock().
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:39 +0000 (17:33 -0800)]
net: sched: red: delay destroying child qdisc on replace
Move destroying of the old child qdisc outside of the sch_tree_lock()
section. This should improve the software qdisc replace but is even
more important for offloads. Firstly calling offloads under a spin
lock is best avoided. Secondly the destroy event of existing child
would have been sent to the offload device before the replace, causing
confusion.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:38 +0000 (17:33 -0800)]
net: sched: refactor grafting Qdiscs with a parent
The code for grafting Qdiscs when there is a parent has two needless
indentation levels, and breaks the "keep the success path unindented"
guideline. Refactor.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:37 +0000 (17:33 -0800)]
net: sched: add an offload graft helper
Qdisc graft operation of offload-capable qdiscs performs a few
extra steps which are identical among all the qdiscs. Add
a helper to share this code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:36 +0000 (17:33 -0800)]
net: sched: set TCQ_F_OFFLOADED flag for MQ
PRIO and RED mark the qdisc with TCQ_F_OFFLOADED upon successful offload,
make MQ do the same. The consistency will help with consistent
graft callback behaviour.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:35 +0000 (17:33 -0800)]
net: sched: red: remove unnecessary red_dump_offload_stats parameter
Offload dump helper does not use opt parameter, remove it.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 8 Nov 2018 01:33:34 +0000 (17:33 -0800)]
net: sched: add an offload dump helper
Qdisc dump operation of offload-capable qdiscs performs a few
extra steps which are identical among all the qdiscs. Add
a helper to share this code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 23:02:06 +0000 (15:02 -0800)]
Merge branch 'net-phy-improve-and-simplify-phylib-state-machine'
Heiner Kallweit says:
====================
net: phy: improve and simplify phylib state machine
This patch series is based on two axioms:
- During autoneg a PHY always reports the link being down
- Info in clause 22/45 registers doesn't allow to differentiate between
these two states:
1. Link is physically down
2. A link partner is connected and PHY is autonegotiating
In both cases "link up" and "aneg finished" bits aren't set.
One consequence is that having separate states PHY_NOLINK and PHY_AN
isn't needed.
By using these two axioms the state machine can be significantly
simplified.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 19:47:53 +0000 (20:47 +0100)]
net: phy: use phy_check_link_status in more places in the state machine
Use phy_check_link_status in more places in the state machine.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 19:46:51 +0000 (20:46 +0100)]
net: phy: remove state PHY_AN
After the recent changes in the state machine state PHY_AN isn't used
any longer and can be removed.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 19:45:58 +0000 (20:45 +0100)]
net: phy: add phy_check_link_status
In few places in the state machine the state is set to PHY_RUNNING or
PHY_NOLINK after doing a phy_read_status(). So factor this out to
phy_check_link_status().
First use it in phy_start_aneg(): By setting the state to PHY_RUNNING
or PHY_NOLINK directly we can remove the code to handle the case that
we're using interrupts and aneg was finished already.
Definition of phy_link_up and phy_link_down needs to be moved because
they are called in the new function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 19:44:56 +0000 (20:44 +0100)]
net: phy: remove useless check in state machine case PHY_RESUMING
If aneg isn't finished yet then the PHY reports the link as down.
There's no benefit in setting the state to PHY_AN because the next
state machine run would set the status to PHY_NOLINK anyway (except
in the meantime aneg has been finished and link is up). Therefore
we can set the state to PHY_RUNNING or PHY_NOLINK directly.
In addition change the do_carrier parameter in phy_link_down() to true.
If carrier was marked as up before (what should never be the case because
PHY was in state PHY_HALTED before) then we should mark it as down now.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 19:43:20 +0000 (20:43 +0100)]
net: phy: remove useless check in state machine case PHY_NOLINK
If aneg is enabled and the PHY reports the link as up then definitely
aneg finished successfully. Therefore this check is useless and
can be removed.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 07:07:04 +0000 (23:07 -0800)]
Merge branch '1GbE' of git://git./linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2018-11-07
This series contains updates to almost all of the Intel wired LAN
drivers.
Lance Roy replaces a spin lock with lockdep_assert_held() for igbvf
driver in move toward trying to remove spin_is_locked().
Colin Ian King fixes a potential null pointer dereference by adding a
check in ixgbe. Also fixed the igc driver by properly assigning the
return error code of a function call, so that we can properly check it.
Shannon Nelson updates the ixgbe driver to not block IPsec offload when
in VEPA mode, in VEB mode, IPsec offload is still blocked because the
device drops packets into a black hole.
Jake adds support for software timestamping for packets sent over
ixgbevf. Also modifies i40e, iavf, igb, igc, and ixgbe to delay calling
skb_tx_timestamp() to the latest point possible, which is just prior to
notifying the hardware of the new Tx packet.
Todd adds the new WoL filter flag so that we properly report that we do
not support this new feature.
YueHaibing from Huawei fixes the igc driver by cleaning up variables
that are not "really" used.
Dan Carpenter cleans up igc whitespace issues.
Miroslav Lichvar fixes e1000e for potential underflow issue in the
timecounter, so modify the driver to use timecounter_cyc2time() to allow
non-monotonic SYSTIM readings.
Sasha provides additional igc cleanups based on community feedback.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 07:00:24 +0000 (23:00 -0800)]
Merge branch 'nfp-add-and-use-tunnel-netdev-helpers'
John Hurley says:
====================
nfp: add and use tunnel netdev helpers
A recent patch introduced the function netif_is_vxlan() to verify the
tunnel type of a given netdev as vxlan.
Add a similar function to detect geneve netdevs and make use of this
function in the NFP driver. Also make use of the vxlan helper where
applicable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
John Hurley [Wed, 7 Nov 2018 18:32:50 +0000 (18:32 +0000)]
nfp: flower: include geneve as supported offload tunnel type
Offload of geneve decap rules is supported in NFP. Include geneve in the
check for supported types.
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Hurley [Wed, 7 Nov 2018 18:32:49 +0000 (18:32 +0000)]
nfp: flower: use geneve and vxlan helpers
Make use of the recently added VXLAN and geneve helper functions to
determine the type of the netdev from its rtnl_link_ops.
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Hurley [Wed, 7 Nov 2018 18:32:48 +0000 (18:32 +0000)]
net: add netif_is_geneve()
Add a helper function to determine if the type of a netdev is geneve based
on its rtnl_link_ops. This allows drivers that may wish to offload tunnels
to check the underlying type of the device.
A recent patch added a similar helper to vxlan.h
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Edward Cree [Wed, 7 Nov 2018 18:12:42 +0000 (18:12 +0000)]
sfc: add missing NVRAM partition types for EF10
Expose the MUM/SUC Firmware, UEFI Expansion ROM and MC Status partitions
of the NIC's NVRAM as MTDs if found on the NIC. The first two are needed
in order to properly update them when performing firmware updates; the MC
Status partition is used to determine whether a signed firmware image was
accepted or rejected by a Secure NIC.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 06:41:20 +0000 (22:41 -0800)]
Merge branch 'vlan-prepare-for-removal-of-VLAN_TAG_PRESENT'
Michał Mirosław says:
====================
net/vlan: prepare for removal of VLAN_TAG_PRESENT
This is a preparatory patchset before removing the use of VLAN_TAG_PRESENT
bit in skb->vlan_tci as indication of VLAN offload. This set includes
only cleanups that allow abstracting of code testing VLAN tag presence
in drivers and networking code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Wed, 7 Nov 2018 17:07:03 +0000 (18:07 +0100)]
net/vlan: remove unused #define HAVE_VLAN_GET_TAG
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Wed, 7 Nov 2018 17:07:03 +0000 (18:07 +0100)]
net/vlan: include the shift in skb_vlan_tag_get_prio()
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Wed, 7 Nov 2018 17:07:02 +0000 (18:07 +0100)]
net/vlan: introduce __vlan_hwaccel_copy_tag() helper
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław [Wed, 7 Nov 2018 17:07:02 +0000 (18:07 +0100)]
net/vlan: introduce __vlan_hwaccel_clear_tag() helper
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yafang Shao [Wed, 7 Nov 2018 11:20:16 +0000 (19:20 +0800)]
inet: minor optimization for backlog setting in listen(2)
Set the backlog earlier in inet_dccp_listen() and inet_listen(),
then we can avoid the redundant setting.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Davide Caratti [Wed, 7 Nov 2018 10:28:18 +0000 (11:28 +0100)]
net: vlan: add support for tunnel offload
GSO tunneled packets are always segmented in software before they are
transmitted by a VLAN, even when the lower device can offload tunnel
encapsulation and VLAN together (i.e., some bits in NETIF_F_GSO_ENCAP_ALL
mask are set in the lower device 'vlan_features'). If we let VLANs have
the same tunnel offload capabilities as their lower device, throughput
can improve significantly when CPU is limited on the transmitter side.
- set NETIF_F_GSO_ENCAP_ALL bits in the VLAN 'hw_features', to ensure
that 'features' will have those bits zeroed only when the lower device
has no hardware support for tunnel encapsulation.
- for the same reason, copy GSO-related bits of 'hw_enc_features' from
lower device to VLAN, and ensure to update that value when the lower
device changes its features.
- set NETIF_F_HW_CSUM bit in the VLAN 'hw_enc_features' if 'real_dev'
is able to compute checksums at least for a kind of packets, like done
with commit
8403debeead8 ("vlan: Keep NETIF_F_HW_CSUM similar to other
software devices"). This avoids software segmentation due to mismatching
checksum capabilities between VLAN's 'features' and 'hw_enc_features'.
Reported-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 09:34:36 +0000 (10:34 +0100)]
tun: compute the RFS hash only if needed.
The tun XDP sendmsg code path, unconditionally computes the symmetric
hash of each packet for RFS's sake, even when we could skip it. e.g.
when the device has a single queue.
This change adds the check already in-place for the skb sendmsg path
to avoid unneeded hashing.
The above gives small, but measurable, performance gain for VM xmit
path when zerocopy is not enabled.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Thore [Wed, 7 Nov 2018 08:09:45 +0000 (09:09 +0100)]
net/wan/fsl_ucc_hdlc: add BQL support
Add byte queue limits support in the fsl_ucc_hdlc driver.
Signed-off-by: Mathias Thore <mathias.thore@infinera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 07:52:46 +0000 (08:52 +0100)]
net: phy: realtek: load driver for all PHYs with a Realtek OUI
Instead of listing every single PHYID, load the driver for every PHYID
with a Realtek OUI, independent of model number and revision.
This patch also improves two further aspects:
- constify realtek_tbl[]
- the mask should have been 0xffffffff instead of 0x001fffff so far,
by masking out some bits a PHY from another vendor could have been
matched
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Wed, 7 Nov 2018 07:15:58 +0000 (08:15 +0100)]
net: phy: make phy_trigger_machine static
phy_trigger_machine() is used in phy.c only, so we can make it static.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
kbuild test robot [Wed, 7 Nov 2018 00:50:34 +0000 (08:50 +0800)]
net: dsa: bcm_sf2: fix semicolon.cocci warnings
drivers/net/dsa/bcm_sf2_cfp.c:1168:2-3: Unneeded semicolon
drivers/net/dsa/bcm_sf2_cfp.c:532:2-3: Unneeded semicolon
Remove unneeded semicolon.
Generated by: scripts/coccinelle/misc/semicolon.cocci
Fixes:
ae7a5aff783c ("net: dsa: bcm_sf2: Keep copy of inserted rules")
CC: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Justin Chen [Wed, 7 Nov 2018 00:37:44 +0000 (16:37 -0800)]
net: phy: bcm7xxx: Add entry for BCM7255
Add support for BCM7255 EPHY.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 00:23:05 +0000 (16:23 -0800)]
Merge branch 'udp-gro'
Paolo Abeni says:
====================
udp: implement GRO support
This series implements GRO support for UDP sockets, as the RX counterpart
of commit
bec1f6f69736 ("udp: generate gso with UDP_SEGMENT").
The core functionality is implemented by the second patch, introducing a new
sockopt to enable UDP_GRO, while patch 3 implements support for passing the
segment size to the user space via a new cmsg.
UDP GRO performs a socket lookup for each ingress packets and aggregate datagram
directed to UDP GRO enabled sockets with constant l4 tuple.
UDP GRO packets can land on non GRO-enabled sockets, e.g. due to iptables NAT
rules, and that could potentially confuse existing applications.
The solution adopted here is to de-segment the GRO packet before enqueuing
as needed. Since we must cope with packet reinsertion after de-segmentation,
the relevant code is factored-out in ipv4 and ipv6 specific helpers and exposed
to UDP usage.
While the current code can probably be improved, this safeguard ,implemented in
the patches 4-7, allows future enachements to enable UDP GSO offload on more
virtual devices eventually even on forwarded packets.
The last 4 for patches implement some performance and functional self-tests,
re-using the existing udpgso infrastructure. The problematic scenario described
above is explicitly tested.
This revision of the series try to address the feedback provided by Willem and
Subash on previous iteration.
====================
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:37 +0000 (12:38 +0100)]
selftests: add functionals test for UDP GRO
Extends the existing udp programs to allow checking for proper
GRO aggregation/GSO size, and run the tests via a shell script, using
a veth pair with XDP program attached to trigger the GRO code path.
rfc v3 -> v1:
- use ip route to attach the xdp helper to the veth
rfc v2 -> rfc v3:
- add missing test program options documentation
- fix sporatic test failures (receiver faster than sender)
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:36 +0000 (12:38 +0100)]
selftests: add some benchmark for UDP GRO
Run on top of veth pair, using a dummy XDP program to enable the GRO.
rfc v3 -> v1:
- use ip route to attach the xdp helper to the veth
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:35 +0000 (12:38 +0100)]
selftests: add dummy xdp test helper
This trivial XDP program does nothing, but will be used by the
next patch to test the GRO path in a net namespace, leveraging
the veth XDP implementation.
It's added here, despite its 'net' usage, to avoid the duplication
of the llc-related makefile boilerplate.
rfc v3 -> v1:
- move the helper implementation into the bpf directory, don't
touch udpgso_bench_rx
rfc v2 -> rfc v3:
- move 'x' option handling here
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:34 +0000 (12:38 +0100)]
selftests: add GRO support to udp bench rx program
And fix a couple of buglets (port option processing,
clean termination on SIGINT). This is preparatory work
for GRO tests.
rfc v2 -> rfc v3:
- use ETH_MAX_MTU
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:33 +0000 (12:38 +0100)]
udp: cope with UDP GRO packet misdirection
In some scenarios, the GRO engine can assemble an UDP GRO packet
that ultimately lands on a non GRO-enabled socket.
This patch tries to address the issue explicitly checking for the UDP
socket features before enqueuing the packet, and eventually segmenting
the unexpected GRO packet, as needed.
We must also cope with re-insertion requests: after segmentation the
UDP code calls the helper introduced by the previous patches, as needed.
Segmentation is performed by a common helper, which takes care of
updating socket and protocol stats is case of failure.
rfc v3 -> v1
- fix compile issues with rxrpc
- when gso_segment returns NULL, treat is as an error
- added 'ipv4' argument to udp_rcv_segment()
rfc v2 -> rfc v3
- moved udp_rcv_segment() into net/udp.h, account errors to socket
and ns, always return NULL or segs list
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:32 +0000 (12:38 +0100)]
ipv6: factor out protocol delivery helper
So that we can re-use it at the UDP level in the next patch
rfc v3 -> v1:
- add the helper declaration into the ipv6 header
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:31 +0000 (12:38 +0100)]
ip: factor out protocol delivery helper
So that we can re-use it at the UDP level in a later patch
rfc v3 -> v1
- add the helper declaration into the ip header
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:30 +0000 (12:38 +0100)]
udp: add support for UDP_GRO cmsg
When UDP GRO is enabled, the UDP_GRO cmsg will carry the ingress
datagram size. User-space can use such info to compute the original
packets layout.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:29 +0000 (12:38 +0100)]
udp: implement GRO for plain UDP sockets.
This is the RX counterpart of commit
bec1f6f69736 ("udp: generate gso
with UDP_SEGMENT"). When UDP_GRO is enabled, such socket is also
eligible for GRO in the rx path: UDP segments directed to such socket
are assembled into a larger GSO_UDP_L4 packet.
The core UDP GRO support is enabled with setsockopt(UDP_GRO).
Initial benchmark numbers:
Before:
udp rx: 1079 MB/s 769065 calls/s
After:
udp rx: 1466 MB/s 24877 calls/s
This change introduces a side effect in respect to UDP tunnels:
after a UDP tunnel creation, now the kernel performs a lookup per ingress
UDP packet, while before such lookup happened only if the ingress packet
carried a valid internal header csum.
rfc v2 -> rfc v3:
- fixed typos in macro name and comments
- really enforce UDP_GRO_CNT_MAX, instead of UDP_GRO_CNT_MAX + 1
- acquire socket lock in UDP_GRO setsockopt
rfc v1 -> rfc v2:
- use a new option to enable UDP GRO
- use static keys to protect the UDP GRO socket lookup
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 7 Nov 2018 11:38:28 +0000 (12:38 +0100)]
udp: implement complete book-keeping for encap_needed
The *encap_needed static keys are enabled by UDP tunnels
and several UDP encapsulations type, but they are never
turned off. This can cause unneeded overall performance
degradation for systems where such features are used
transiently.
This patch introduces complete book-keeping for such keys,
decreasing the usage at socket destruction time, if needed,
and avoiding that the same socket could increase the key
usage multiple times.
rfc v3 -> v1:
- add socket lock around udp_tunnel_encap_enable()
rfc v2 -> rfc v3:
- use udp_tunnel_encap_enable() in setsockopt()
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 8 Nov 2018 00:12:39 +0000 (16:12 -0800)]
Merge branch 'vrf-allow-simultaneous-service-instances-in-default-and-other-VRFs'
Mike Manning says:
====================
vrf: allow simultaneous service instances in default and other VRFs
Services currently have to be VRF-aware if they are using an unbound
socket. One cannot have multiple service instances running in the
default and other VRFs for services that are not VRF-aware and listen
on an unbound socket. This is because there is no easy way of isolating
packets received in the default VRF from those arriving in other VRFs.
This series provides this isolation for stream sockets subject to the
existing kernel parameter net.ipv4.tcp_l3mdev_accept not being set,
given that this is documented as allowing a single service instance to
work across all VRF domains. Similarly, net.ipv4.udp_l3mdev_accept is
checked for datagram sockets, and net.ipv4.raw_l3mdev_accept is
introduced for raw sockets. The functionality applies to UDP & TCP
services as well as those using raw sockets, and is for IPv4 and IPv6.
Example of running ssh instances in default and blue VRF:
$ /usr/sbin/sshd -D
$ ip vrf exec vrf-blue /usr/sbin/sshd
$ ss -ta | egrep 'State|ssh'
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 0.0.0.0%vrf-blue:ssh 0.0.0.0:*
LISTEN 0 128 0.0.0.0:ssh 0.0.0.0:*
ESTAB 0 0 192.168.122.220:ssh 192.168.122.1:50282
LISTEN 0 128 [::]%vrf-blue:ssh [::]:*
LISTEN 0 128 [::]:ssh [::]:*
ESTAB 0 0 [3000::2]%vrf-blue:ssh [3000::9]:45896
ESTAB 0 0 [2000::2]:ssh [2000::9]:46398
v1:
- Address Paolo Abeni's comments (patch 4/5)
- Fix build when CONFIG_NET_L3_MASTER_DEV not defined (patch 1/5)
v2:
- Address David Aherns' comments (patches 4/5 and 5/5)
- Remove patches 3/5 and 5/5 from series for individual submissions
- Include a sysctl for raw sockets as recommended by David Ahern
- Expand series into 10 patches and provide improved descriptions
v3:
- Update description for patch 1/10 and remove patch 6/10
v4:
- Set default to enabled for raw socket sysctl as recommended by David Ahern
v5:
- Address review comments from David Ahern in patches 2-5
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dewi Morgan [Wed, 7 Nov 2018 15:36:10 +0000 (15:36 +0000)]
ipv6: do not drop vrf udp multicast packets
For bound udp sockets in a vrf, also check the sdif to get the index
for ingress devices enslaved to an l3mdev.
Signed-off-by: Dewi Morgan <morgand@vyatta.att-mail.com>
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mike Manning [Wed, 7 Nov 2018 15:36:09 +0000 (15:36 +0000)]
ipv6: handling of multicast packets received in VRF
If the skb for multicast packets marked as enslaved to a VRF are
received, then the secondary device index should be used to obtain
the real device. And verify the multicast address against the
enslaved rather than the l3mdev device.
Signed-off-by: Dewi Morgan <morgand@vyatta.att-mail.com>
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mike Manning [Wed, 7 Nov 2018 15:36:08 +0000 (15:36 +0000)]
ipv6: allow ping to link-local address in VRF
If link-local packets are marked as enslaved to a VRF, then to allow
ping to the link-local from a vrf, the error handling for IPV6_PKTINFO
needs to be relaxed to also allow the pkt ipi6_ifindex to be that of a
slave device to the vrf.
Note that the real device also needs to be retrieved in icmp6_iif()
to set the ipv6 flow oif to this for icmp echo reply handling. The
recent commit
24b711edfc34 ("net/ipv6: Fix linklocal to global address
with VRF") takes care of this, so the sdif does not need checking here.
This fix makes ping to link-local consistent with that to global
addresses, in that this can now be done from within the same VRF that
the address is in.
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>