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>
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>
====================
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 19:45:58 +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>
David S. Miller [Thu, 8 Nov 2018 07:07:04 +0000 (23:07 -0800)]
Merge branch '1GbE' of git://git.kernel.org/pub/scm/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>
====================
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>
====================
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>
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>
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>
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 11:38:35 +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 11:38:33 +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 11:38:29 +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>
====================
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:
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>
Mike Manning [Wed, 7 Nov 2018 15:36:07 +0000 (15:36 +0000)]
vrf: mark skb for multicast or link-local as enslaved to VRF
The skb for packets that are multicast or to a link-local address are
not marked as being enslaved to a VRF, if they are received on a socket
bound to the VRF. This is needed for ND and it is preferable for the
kernel not to have to deal with the additional use-cases if ll or mcast
packets are handled as enslaved. However, this does not allow service
instances listening on unbound and bound to VRF sockets to distinguish
the VRF used, if packets are sent as multicast or to a link-local
address. The fix is for the VRF driver to also mark these skb as being
enslaved to the VRF.
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>
Duncan Eastoe [Wed, 7 Nov 2018 15:36:06 +0000 (15:36 +0000)]
net: fix raw socket lookup device bind matching with VRFs
When there exist a pair of raw sockets one unbound and one bound
to a VRF but equal in all other respects, when a packet is received
in the VRF context, __raw_v4_lookup() matches on both sockets.
This results in the packet being delivered over both sockets,
instead of only the raw socket bound to the VRF. The bound device
checks in __raw_v4_lookup() are replaced with a call to
raw_sk_bound_dev_eq() which correctly handles whether the packet
should be delivered over the unbound socket in such cases.
In __raw_v6_lookup() the match on the device binding of the socket is
similarly updated to use raw_sk_bound_dev_eq() which matches the
handling in __raw_v4_lookup().
Importantly raw_sk_bound_dev_eq() takes the raw_l3mdev_accept sysctl
into account.
Signed-off-by: Duncan Eastoe <deastoe@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 15:36:05 +0000 (15:36 +0000)]
net: provide a sysctl raw_l3mdev_accept for raw socket lookup with VRFs
Add a sysctl raw_l3mdev_accept to control raw socket lookup in a manner
similar to use of tcp_l3mdev_accept for stream and of udp_l3mdev_accept
for datagram sockets. Have this default to enabled for reasons of
backwards compatibility. This is so as to specify the output device
with cmsg and IP_PKTINFO, but using a socket not bound to the
corresponding VRF. This allows e.g. older ping implementations to be
run with specifying the device but without executing it in the VRF.
If the option is disabled, packets received in a VRF context are only
handled by a raw socket bound to the VRF, and correspondingly packets
in the default VRF are only handled by a socket not bound to any VRF.
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 15:36:04 +0000 (15:36 +0000)]
net: ensure unbound datagram socket to be chosen when not in a VRF
Ensure an unbound datagram skt is chosen when not in a VRF. The check
for a device match in compute_score() for UDP must be performed when
there is no device match. For this, a failure is returned when there is
no device match. This ensures that bound sockets are never selected,
even if there is no unbound socket.
Allow IPv6 packets to be sent over a datagram skt bound to a VRF. These
packets are currently blocked, as flowi6_oif was set to that of the
master vrf device, and the ipi6_ifindex is that of the slave device.
Allow these packets to be sent by checking the device with ipi6_ifindex
has the same L3 scope as that of the bound device of the skt, which is
the master vrf device. Note that this check always succeeds if the skt
is unbound.
Even though the right datagram skt is now selected by compute_score(),
a different skt is being returned that is bound to the wrong vrf. The
difference between these and stream sockets is the handling of the skt
option for SO_REUSEPORT. While the handling when adding a skt for reuse
correctly checks that the bound device of the skt is a match, the skts
in the hashslot are already incorrect. So for the same hash, a skt for
the wrong vrf may be selected for the required port. The root cause is
that the skt is immediately placed into a slot when it is created,
but when the skt is then bound using SO_BINDTODEVICE, it remains in the
same slot. The solution is to move the skt to the correct slot by
forcing a rehash.
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 15:36:03 +0000 (15:36 +0000)]
net: ensure unbound stream socket to be chosen when not in a VRF
The commit a04a480d4392 ("net: Require exact match for TCP socket
lookups if dif is l3mdev") only ensures that the correct socket is
selected for packets in a VRF. However, there is no guarantee that
the unbound socket will be selected for packets when not in a VRF.
By checking for a device match in compute_score() also for the case
when there is no bound device and attaching a score to this, the
unbound socket is selected. And if a failure is returned when there
is no device match, this ensures that bound sockets are never selected,
even if there is no unbound socket.
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>
Robert Shearman [Wed, 7 Nov 2018 15:36:02 +0000 (15:36 +0000)]
net: allow binding socket in a VRF when there's an unbound socket
Change the inet socket lookup to avoid packets arriving on a device
enslaved to an l3mdev from matching unbound sockets by removing the
wildcard for non sk_bound_dev_if and instead relying on check against
the secondary device index, which will be 0 when the input device is
not enslaved to an l3mdev and so match against an unbound socket and
not match when the input device is enslaved.
Change the socket binding to take the l3mdev into account to allow an
unbound socket to not conflict sockets bound to an l3mdev given the
datapath isolation now guaranteed.
Signed-off-by: Robert Shearman <rshearma@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>
YueHaibing [Wed, 7 Nov 2018 02:33:53 +0000 (02:33 +0000)]
net: hns3: Remove set but not used variable 'reset_level'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c: In function 'hclge_log_and_clear_ppp_error':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c:821:24: warning:
variable 'reset_level' set but not used [-Wunused-but-set-variable]
enum hnae3_reset_type reset_level = HNAE3_NONE_RESET;
It never used since introduction in commit 01865a50d78f ("net: hns3: Add enable and process hw errors of TM scheduler")
Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
nfp: more set actions and notifier refactor
This series brings updates to flower offload code. First Pieter adds
support for setting TTL, ToS, Flow Label and Hop Limit fields in IPv4
and IPv6 headers.
Remaining 5 patches deal with factoring out netdev notifiers from flower
code. We already have two instances, and more is coming, so it's time
to move to one central notifier which then feeds individual feature
handlers.
I start that part by cleaning up the existing notifiers. Next a central
notifier is added, and used by flower offloads.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Wed, 7 Nov 2018 01:07:34 +0000 (17:07 -0800)]
nfp: flower: use the common netdev notifier
Use driver's common notifier for LAG and tunnel configuration.
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 [Wed, 7 Nov 2018 01:07:33 +0000 (17:07 -0800)]
nfp: register a notifier handler in a central location for the device
Code interested in networking events registers its own notifier
handlers. Create one device-wide notifier instance.
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 [Wed, 7 Nov 2018 01:07:32 +0000 (17:07 -0800)]
nfp: flower: make nfp_fl_lag_changels_event() void
nfp_fl_lag_changels_event() never fails, and therefore we would
never return NOTIFY_BAD for NETDEV_CHANGELOWERSTATE. Make this
clearer by changing nfp_fl_lag_changels_event()'s return type
to void.
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 [Wed, 7 Nov 2018 01:07:31 +0000 (17:07 -0800)]
nfp: flower: don't try to nack device unregister events
Returning an error from a notifier means we want to veto the change.
We shouldn't veto NETDEV_UNREGISTER just because we couldn't find
the tracking info for given master.
I can't seem to find a way to trigger this unless we have some
other bug, so it's probably not fix-worthy.
While at it move the checking if the netdev really is of interest
into the handling functions, like we do for other events.
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 [Wed, 7 Nov 2018 01:07:30 +0000 (17:07 -0800)]
nfp: flower: remove unnecessary iteration over devices
For flower tunnel offloads FW has to be informed about MAC addresses
of tunnel devices. We use a netdev notifier to keep track of these
addresses.
Remove unnecessary loop over netdevices after notifier is registered.
The intention of the loop was to catch devices which already existed
on the system before nfp driver got loaded, but netdev notifier will
replay NETDEV_REGISTER events.
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>
nfp: flower: add ipv6 set flow label and hop limit offload
Add ipv6 set flow label and hop limit action offload. Since pedit sets
headers per 4 byte word, we need to ensure that setting either version,
priority, payload_len or nexthdr does not get offloaded.
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Add ipv4 set ttl and tos action offload. Since pedit sets headers per 4
byte word, we need to ensure that setting either version, ihl, protocol,
total length or checksum does not get offloaded.
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:18 +0000 (12:06 +0800)]
net: hns3: fix for cmd queue memory not freed problem during reset
It is not necessary to reallocate the descriptor and remap the
descriptor memory in reset process, otherwise it may cause memory
not freed problem.
Also, this patch initializes the cmd queue's spinlocks in
hclgevf_alloc_cmd_queue, and take the spinlocks when reinitializing
cmd queue' registers.
Fixes: fedd0c15d288 ("net: hns3: Add HNS3 VF IMP(Integrated Management Proc) cmd interface") Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:17 +0000 (12:06 +0800)]
net: hns3: add error handler for hclge_reset()
When hclge_reset() is called, it may fail for several reasons.
For example, an higher-level reset event occurs, memory allocation
failure, hardware reset timeout, etc. Therefore, it is necessary
to add corresponding error handling for these situations.
1. A high-level reset is required due to a high-level reset failure.
2. For memory allocation failure, a high-level reset is initiated by
the timer to recover. The reason for using the timer is to prevent this
new high-level reset to interrupt the reset process of other pf/vf;
3. For the case of hardware reset timeout, reschedule the reset task
to wait for the hardware to complete the reset.
For memory allocation failure and reset timeouts, in order to prevent
an infinite number of scheduled reset tasks, the number of error
recovery needs to be limited.
This patch also add some reset related debug log printing.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:16 +0000 (12:06 +0800)]
net: hns3: call roce's reset notify callback when resetting
While doing resetting, roce should do its uninitailization part
before nic's, and do its initialization part after nic's.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:15 +0000 (12:06 +0800)]
net: hns3: adjust the process of PF reset
When doing PF reset, the driver needs to do some preparatory work
before asserting PF reset. Since when hardware is resetting, it
is necessary to stop tx/rx queue, clear hardware table, etc,
otherwise hardware may run into unrecoverable state if there is
still IO running when the hardware is resetting.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:14 +0000 (12:06 +0800)]
net: hns3: move some reset information from hnae3_handle into hclge_dev/hclgevf_dev
Saving reset related information in the hclge_dev/hclgevf_dev
structure is more suitable than the hnae3_handle, since hardware
related information is kept in these two structure.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:13 +0000 (12:06 +0800)]
net: hns3: ignore new coming low-level reset while doing high-level reset
When processing a higher level reset, the pending lower level reset
does not have to be processed anymore, because the higher level
reset is the superset of the lower level reset.
Therefore, when processing an higher level reset, the request of
lower level reset needs to be cleared.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:12 +0000 (12:06 +0800)]
net: hns3: use HNS3_NIC_STATE_RESETTING to indicate resetting
While hclge is going to reset, it will notify its client with
HNAE3_DOWN_CLIENT, so this client should get into a resetting
status from this moment, other operations from the stack need to
be blocked as well. And when the reset is finished, the client
will be notified with HNAE3_UP_CLIENT, so this is the end of
the resetting status.
This patch uses HNS3_NIC_STATE_RESETTING flag to implement that,
and adds hns3_nic_resetting() to indicate which operation is not
allowed.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:11 +0000 (12:06 +0800)]
net: hns3: enable/disable ring in the enet while doing UP/DOWN
While hardware gets into reset status, the firmware will not respond to
driver's command request, which may cause ring not disabled problem
during reset process.
So this patch uses register instead of command to enable/disable the ring
in the enet while doing UP/DOWN operation.
Also, HNS3_RING_RX_VM_REG is previously unused, so change it to the
correct meaning, and add a wrapper function for readl().
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:10 +0000 (12:06 +0800)]
net: hns3: adjust the location of clearing the table when doing reset
When doing a function reset, the hardware table should be cleared
before the hardware reset. In current code, this clearing is done
in hns3_reset_notify_uninit_enet, but it is too late, because
the hardware reset is already done, hns3_reset_notify_down_enet
is more suitable to do that.
Fixes: bb6b94a896d4 ("net: hns3: Add reset interface implementation in client") Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:09 +0000 (12:06 +0800)]
net: hns3: provide some interface & information for the client
The client needs to know if the hardware is resetting when
loading or unloading itself, because client may abort the loading
process or wait for the reset process to finish when unloading
if hardware is resetting.
So this patch provides these interfaces to do it.
1. get_hw_reset_stat, the reset status of hardware.
2. ae_dev_resetting, whether reset task is scheduling.
3. ae_dev_reset_cnt, how many reset has been done.
Also, the RoCE client needs some field in the hnae3_roce_private_info
to save its state, and process_hw_error interface in the
hnae3_client_ops to process hardware errors.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:08 +0000 (12:06 +0800)]
net: hns3: add set_default_reset_request in the hnae3_ae_ops
Currently, when reset_event is called because of tx timeout, it will
upgrade the reset level (For PF, HNAE3_FUNC_RESET -> HNAE3_CORE_RESET
-> HNAE3_GLOBAL_RESET) if the time between the new reset and last reset
is within 20 secs, or restore the reset level to HNAE3_FUNC_RESET if
the time between the new reset and last reset is over 20 secs.
There is requirement that the caller needs to decide the reset level
when triggering a reset, for example, RAS recovery. So this patch
adds the set_default_reset_request to meet this requirement.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan [Wed, 7 Nov 2018 04:06:07 +0000 (12:06 +0800)]
net: hns3: use HNS3_NIC_STATE_INITED to indicate the initialization state of enet
Besides of module_init and module_exit, the process of reset will
also uninitialize and initialize the enet client. When reset process
fails with enet client uninitialized, the module_exit does not need
to uninitialize the enet client, otherwise it may cause double
uninitialization problem.
So we need the HNS3_NIC_STATE_INITED flag to indicate whether
the enet client is initialized.
Also HNS3_NIC_STATE_REINITING is previously unused, so change it to
HNS3_NIC_STATE_INITED.
Fixes: bb6b94a896d4 ("net: hns3: Add reset interface implementation in client") Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Miroslav Lichvar [Tue, 23 Oct 2018 12:37:39 +0000 (14:37 +0200)]
e1000e: allow non-monotonic SYSTIM readings
It seems with some NICs supported by the e1000e driver a SYSTIM reading
may occasionally be few microseconds before the previous reading and if
enabled also pass e1000e_sanitize_systim() without reaching the maximum
number of rereads, even if the function is modified to check three
consecutive readings (i.e. it doesn't look like a double read error).
This causes an underflow in the timecounter and the PHC time jumps hours
ahead.
This was observed on 82574, I217 and I219. The fastest way to reproduce
it is to run a program that continuously calls the PTP_SYS_OFFSET ioctl
on the PHC.
Modify e1000e_phc_gettime() to use timecounter_cyc2time() instead of
timecounter_read() in order to allow non-monotonic SYSTIM readings and
prevent the PHC from jumping.
Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Acked-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Colin Ian King [Fri, 19 Oct 2018 18:16:15 +0000 (19:16 +0100)]
igc: fix error return handling from call to netif_set_real_num_tx_queues
The call to netif_set_real_num_tx_queues is not assigning the error
return to variable err even though the next line checks err for an
error. Fix this by adding the missing err assignment.
Detected by CoverityScan, CID#1474551 ("Logically dead code")
Fixes: 3df25e4c1e66 ("igc: Add interrupt support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
YueHaibing [Fri, 19 Oct 2018 12:48:11 +0000 (12:48 +0000)]
igc: Remove set but not used variable 'pci_using_dac'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/intel/igc/igc_main.c: In function 'igc_probe':
drivers/net/ethernet/intel/igc/igc_main.c:3535:11: warning:
variable 'pci_using_dac' set but not used [-Wunused-but-set-variable]
It never used since introduction in commit d89f88419f99 ("igc: Add skeletal frame for Intel(R) 2.5G Ethernet Controller support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
YueHaibing [Fri, 19 Oct 2018 12:40:30 +0000 (12:40 +0000)]
igc: Remove set but not used variables 'ctrl_ext, link_mode'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/intel/igc/igc_base.c: In function 'igc_init_phy_params_base':
drivers/net/ethernet/intel/igc/igc_base.c:240:6: warning:
variable 'ctrl_ext' set but not used [-Wunused-but-set-variable]
u32 ctrl_ext;
drivers/net/ethernet/intel/igc/igc_base.c: In function 'igc_get_invariants_base':
drivers/net/ethernet/intel/igc/igc_base.c:290:6: warning:
variable 'link_mode' set but not used [-Wunused-but-set-variable]
u32 link_mode = 0;
It never used since introduction in
commit c0071c7aa5fe ("igc: Add HW initialization code")
Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Fri, 5 Oct 2018 16:33:56 +0000 (09:33 -0700)]
intel-ethernet: software timestamp skbs as late as possible
Many of the Intel Ethernet drivers call skb_tx_timestamp() earlier than
necessary. Move the calls to this function to the latest point possible,
just prior to notifying hardware of the new Tx packet when we bump the
tail register.
This affects i40e, iavf, igb, igc, and ixgbe.
The e100, e1000, e1000e, fm10k, and ice drivers already call the
skb_tx_timestamp() function just prior to indicating the Tx packet to
hardware, so they do not need to be changed.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Fri, 5 Oct 2018 16:33:55 +0000 (09:33 -0700)]
ixgbevf: add support for software timestamps
Add a call to skb_tx_timestamp in the ixgbevf_tx_map function. This
enables software timestamping for packets sent over this device driver.
The call is placed just prior to when we notify hardware of the new
packet, in order to software timestamp as close as possible to when the
hardware will transmit.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Shannon Nelson [Thu, 4 Oct 2018 23:28:52 +0000 (16:28 -0700)]
ixgbe: allow IPsec Tx offload in VEPA mode
When it's possible that the PF might end up trying to send a
packet to one of its own VFs, we have to forbid IPsec offload
because the device drops the packets into a black hole.
See commit 47b6f50077e6 ("ixgbe: disallow IPsec Tx offload
when in SR-IOV mode") for more info.
This really is only necessary when the device is in the default
VEB mode. If instead the device is running in VEPA mode,
the packets will go through the encryption engine and out the
MAC/PHY as normal, and get "hairpinned" as needed by the switch.
So let's not block IPsec offload when in VEPA mode. To get
there with the ixgbe device, use the handy 'bridge' command:
bridge link set dev eth1 hwmode vepa
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Colin Ian King [Thu, 4 Oct 2018 17:57:32 +0000 (18:57 +0100)]
ixgbe: don't clear_bit on xdp_ring->state if xdp_ring is null
There is an earlier check to see if xdp_ring is null when configuring
the tx ring, so assuming that it can still be null, the clearing of
the xdp_ring->state currently could end up with a null pointer
dereference. Fix this by only clearing the bit if xdp_ring is not null.
Detected by CoverityScan, CID#1473795 ("Dereference after null check")
Fixes: 024aa5800f32 ("ixgbe: added Rx/Tx ring disable/enable functions") Signed-off-by: Colin Ian King <colin.king@canonical.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Lance Roy [Wed, 3 Oct 2018 05:38:51 +0000 (22:38 -0700)]
igbvf: Replace spin_is_locked() with lockdep
lockdep_assert_held() is better suited to checking locking requirements,
since it won't get confused when someone else holds the lock. This is
also a step towards possibly removing spin_is_locked().
Signed-off-by: Lance Roy <ldr709@gmail.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
====================
net: systemport: Unmap queues upon DSA unregister event
This patch series fixes the unbinding/binding of the bcm_sf2 switch
driver along with bcmsysport which monitors the switch port queues.
Because the driver was not processing the DSA_PORT_UNREGISTER event, we
would not be unmapping switch port/queues, which could cause incorrect
decisions to be made by the HW (e.g: queue always back-pressured).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net: systemport: Unmap queues upon DSA unregister event
Binding and unbinding the switch driver which creates the DSA slave
network devices for which we set-up inspection would lead to
undesireable effects since we were not clearing the port/queue mapping
to the SYSTEMPORT TX queue.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The use of a bitmap speeds up the finding of the first available queue
to which we could start establishing the mapping for, but we still have
to loop over all slave network devices to set them up. Simplify the
logic to have a single loop, and use the fact that a correctly
configured ring has inspect set to true. This will make things simpler
to unwind during device unregistration.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: bcm_sf2: Turn on PHY to allow successful registration
We are binding to the PHY using the SF2 slave MDIO bus that we create,
binding involves reading the PHY's MII_PHYSID1/2 which won't be possible
if the PHY is turned off. Temporarily turn it on/off for the bus probing
to succeeed. This fixes unbind/bind problems where the port connecting
to that PHY would be in error since it could not connect to it.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
net: dsa: bcm_sf2: Store rules in lists
This patch series changes the bcm-sf2 driver to keep a copy of the
inserted rules as opposed to using the HW as a storage area for a number
of reasons:
- this helps us with doing duplicate rule detection in a faster way, it
would have required a full rule read before
- this helps with Pablo's on-going work to convert ethtool_rx_flow_spec
to a more generic flow rule structure by having fewer code paths to
convert to the new structure/helpers
- we need to cache copies to restore them during drive resumption,
because depending on the low power mode the system has entered, the
switch may have lost all of its context
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net: systemport: Restore Broadcom tag match filters upon resume
Some of the system suspend states that we support wipe out entirely the
HW contents. If we had a Wake-on-LAN filter programmed prior to going
into suspend, but we did not actually wake-up from Wake-on-LAN and
instead used a deeper suspend state, make sure we restore the CID number
that we need to match against.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: bcm_sf2: Get rid of unmarshalling functions
Now that we have migrated the CFP rule handling to a list with a
software copy, the delete/get operation just returns what is on the
list, no need to read from the hardware which is both slow and more
error prone.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: bcm_sf2: Restore CFP rules during system resume
The hardware can lose its context during system suspend, and depending
on the switch generation (7445 vs. 7278), while the rules are still
there, they will have their valid bit cleared (because that's the
fastest way for the HW to reset things). Just make sure we re-apply them
coming back from resume. The 7445 switch is an older version of the core
that has some quirky RAM technology requiring a delete then re-inser to
guarantee the RAM entries are properly latched.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: bcm_sf2: Split rule handling from HW operation
In preparation for restoring CFP rules during system wide system
suspend/resume where the hardware loses its context, split the rule
validation from its actual insertion as well as the rule removal from
its actual hardware deletion operation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
We tried hard to use the hardware as a storage area, which made things
needlessly complex in that we had to both marshall and unmarshall the
ethtool_rx_flow_spec into what the CFP hardware understands but it did
not require any driver level allocations, so that was nice.
Keep a copy of the ethtool_rx_flow_spec rule we want to insert, and also
make sure we don't have a duplicate rule already. This greatly speeds up
the deletion time since we only need to clear the slice's valid bit and
not perform a full read.
This is a preparatory step for being able to restore rules upon system
resumption where the hardware loses its context partially or entirely.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 6 Nov 2018 23:00:45 +0000 (15:00 -0800)]
Merge branch 'net-More-extack-messages'
David Ahern says:
====================
net: More extack messages
Add more extack messages for several link create errors (e.g., invalid
number of queues, unknown link kind) and invalid metrics argument.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Tue, 6 Nov 2018 20:51:16 +0000 (12:51 -0800)]
rtnetlink: Add more extack messages to rtnl_newlink
Add extack arg to the nla_parse_nested calls in rtnl_newlink, and
add messages for unknown device type and link network namespace id.
In particular, it improves the failure message when the wrong link
type is used. From
$ ip li add bond1 type bonding
RTNETLINK answers: Operation not supported
to
$ ip li add bond1 type bonding
Error: Unknown device type.
(The module name is bonding but the link type is bond.)
Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-disco-kernel.git / log