Gustavo A. R. Silva [Thu, 7 May 2020 19:02:16 +0000 (14:02 -0500)]
ipv6: Replace zero-length array with flexible-array
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit
76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Mon, 11 May 2020 02:52:43 +0000 (19:52 -0700)]
Merge branch 'cross-chip-bridging-for-disjoint-dsa-trees'
Vladimir Oltean says:
====================
This series adds support for boards where DSA switches of multiple types
are cascaded together. Actually this type of setup was brought up before
on netdev, and it looks like utilizing disjoint trees is the way to go:
https://lkml.org/lkml/2019/7/7/225
The trouble with disjoint trees (prior to this patch series) is that only
bridging of ports within the same hardware switch can be offloaded.
After scratching my head for a while, it looks like the easiest way to
support hardware bridging between different DSA trees is to bridge their
DSA masters and extend the crosschip bridging operations.
I have given some thought to bridging the DSA masters with the slaves
themselves, but given the hardware topology described in the commit
message of patch 4/4, virtually any number (and combination) of bridges
(forwarding domains) can be created on top of those 3x4-port front-panel
switches. So it becomes a lot less obvious, when the front-panel ports
are enslaved to more than 1 bridge, which bridge should the DSA masters
be enslaved to.
So the least awkward approach was to just create a completely separate
bridge for the DSA masters, whose entire purpose is to permit hardware
forwarding between the discrete switches beneath it.
This is a direct resend of v3, which was deferred due to lack of review.
In the meantime Florian has reviewed and tested some of them.
v1 was submitted here:
https://patchwork.ozlabs.org/project/netdev/cover/
20200429161952.17769-1-olteanv@gmail.com/
v2 was submitted here:
https://patchwork.ozlabs.org/project/netdev/cover/
20200430202542.11797-1-olteanv@gmail.com/
v3 was submitted here:
https://patchwork.ozlabs.org/project/netdev/cover/
20200503221228.10928-1-olteanv@gmail.com/
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Sun, 10 May 2020 16:37:43 +0000 (19:37 +0300)]
net: dsa: sja1105: implement cross-chip bridging operations
sja1105 uses dsa_8021q for DSA tagging, a format which is VLAN at heart
and which is compatible with cascading. A complete description of this
tagging format is in net/dsa/tag_8021q.c, but a quick summary is that
each external-facing port tags incoming frames with a unique pvid, and
this special VLAN is transmitted as tagged towards the inside of the
system, and as untagged towards the exterior. The tag encodes the switch
id and the source port index.
This means that cross-chip bridging for dsa_8021q only entails adding
the dsa_8021q pvids of one switch to the RX filter of the other
switches. Everything else falls naturally into place, as long as the
bottom-end of ports (the leaves in the tree) is comprised exclusively of
dsa_8021q-compatible (i.e. sja1105 switches). Otherwise, there would be
a chance that a front-panel switch transmits a packet tagged with a
dsa_8021q header, header which it wouldn't be able to remove, and which
would hence "leak" out.
The only use case I tested (due to lack of board availability) was when
the sja1105 switches are part of disjoint trees (however, this doesn't
change the fact that multiple sja1105 switches still need unique switch
identifiers in such a system). But in principle, even "true" single-tree
setups (with DSA links) should work just as fine, except for a small
change which I can't test: dsa_towards_port should be used instead of
dsa_upstream_port (I made the assumption that the routing port that any
sja1105 should use towards its neighbours is the CPU port. That might
not hold true in other setups).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Sun, 10 May 2020 16:37:42 +0000 (19:37 +0300)]
net: dsa: introduce a dsa_switch_find function
Somewhat similar to dsa_tree_find, dsa_switch_find returns a dsa_switch
structure pointer by searching for its tree index and switch index (the
parameters from dsa,member). To be used, for example, by drivers who
implement .crosschip_bridge_join and need a reference to the other
switch indicated to by the tree_index and sw_index arguments.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Sun, 10 May 2020 16:37:41 +0000 (19:37 +0300)]
net: dsa: permit cross-chip bridging between all trees in the system
One way of utilizing DSA is by cascading switches which do not all have
compatible taggers. Consider the following real-life topology:
+---------------------------------------------------------------+
| LS1028A |
| +------------------------------+ |
| | DSA master for Felix | |
| |(internal ENETC port 2: eno2))| |
| +------------+------------------------------+-------------+ |
| | Felix embedded L2 switch | |
| | | |
| | +--------------+ +--------------+ +--------------+ | |
| | |DSA master for| |DSA master for| |DSA master for| | |
| | | SJA1105 1 | | SJA1105 2 | | SJA1105 3 | | |
| | |(Felix port 1)| |(Felix port 2)| |(Felix port 3)| | |
+--+-+--------------+---+--------------+---+--------------+--+--+
+-----------------------+ +-----------------------+ +-----------------------+
| SJA1105 switch 1 | | SJA1105 switch 2 | | SJA1105 switch 3 |
+-----+-----+-----+-----+ +-----+-----+-----+-----+ +-----+-----+-----+-----+
|sw1p0|sw1p1|sw1p2|sw1p3| |sw2p0|sw2p1|sw2p2|sw2p3| |sw3p0|sw3p1|sw3p2|sw3p3|
+-----+-----+-----+-----+ +-----+-----+-----+-----+ +-----+-----+-----+-----+
The above can be described in the device tree as follows (obviously not
complete):
mscc_felix {
dsa,member = <0 0>;
ports {
port@4 {
ethernet = <&enetc_port2>;
};
};
};
sja1105_switch1 {
dsa,member = <1 1>;
ports {
port@4 {
ethernet = <&mscc_felix_port1>;
};
};
};
sja1105_switch2 {
dsa,member = <2 2>;
ports {
port@4 {
ethernet = <&mscc_felix_port2>;
};
};
};
sja1105_switch3 {
dsa,member = <3 3>;
ports {
port@4 {
ethernet = <&mscc_felix_port3>;
};
};
};
Basically we instantiate one DSA switch tree for every hardware switch
in the system, but we still give them globally unique switch IDs (will
come back to that later). Having 3 disjoint switch trees makes the
tagger drivers "just work", because net devices are registered for the
3 Felix DSA master ports, and they are also DSA slave ports to the ENETC
port. So packets received on the ENETC port are stripped of their
stacked DSA tags one by one.
Currently, hardware bridging between ports on the same sja1105 chip is
possible, but switching between sja1105 ports on different chips is
handled by the software bridge. This is fine, but we can do better.
In fact, the dsa_8021q tag used by sja1105 is compatible with cascading.
In other words, a sja1105 switch can correctly parse and route a packet
containing a dsa_8021q tag. So if we could enable hardware bridging on
the Felix DSA master ports, cross-chip bridging could be completely
offloaded.
Such as system would be used as follows:
ip link add dev br0 type bridge && ip link set dev br0 up
for port in sw0p0 sw0p1 sw0p2 sw0p3 \
sw1p0 sw1p1 sw1p2 sw1p3 \
sw2p0 sw2p1 sw2p2 sw2p3; do
ip link set dev $port master br0
done
The above makes switching between ports on the same row be performed in
hardware, and between ports on different rows in software. Now assume
the Felix switch ports are called swp0, swp1, swp2. By running the
following extra commands:
ip link add dev br1 type bridge && ip link set dev br1 up
for port in swp0 swp1 swp2; do
ip link set dev $port master br1
done
the CPU no longer sees packets which traverse sja1105 switch boundaries
and can be forwarded directly by Felix. The br1 bridge would not be used
for any sort of traffic termination.
For this to work, we need to give drivers an opportunity to listen for
bridging events on DSA trees other than their own, and pass that other
tree index as argument. I have made the assumption, for the moment, that
the other existing DSA notifiers don't need to be broadcast to other
trees. That assumption might turn out to be incorrect. But in the
meantime, introduce a dsa_broadcast function, similar in purpose to
dsa_port_notify, which is used only by the bridging notifiers.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Sun, 10 May 2020 16:37:40 +0000 (19:37 +0300)]
net: bridge: allow enslaving some DSA master network devices
Commit
8db0a2ee2c63 ("net: bridge: reject DSA-enabled master netdevices
as bridge members") added a special check in br_if.c in order to check
for a DSA master network device with a tagging protocol configured. This
was done because back then, such devices, once enslaved in a bridge
would become inoperative and would not pass DSA tagged traffic anymore
due to br_handle_frame returning RX_HANDLER_CONSUMED.
But right now we have valid use cases which do require bridging of DSA
masters. One such example is when the DSA master ports are DSA switch
ports themselves (in a disjoint tree setup). This should be completely
equivalent, functionally speaking, from having multiple DSA switches
hanging off of the ports of a switchdev driver. So we should allow the
enslaving of DSA tagged master network devices.
Instead of the regular br_handle_frame(), install a new function
br_handle_frame_dummy() on these DSA masters, which returns
RX_HANDLER_PASS in order to call into the DSA specific tagging protocol
handlers, and lift the restriction from br_add_if.
Suggested-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Mon, 11 May 2020 02:43:47 +0000 (19:43 -0700)]
Merge branch 'net-hns3-misc-updates-for-next'
Huazhong Tan says:
====================
net: hns3: misc updates for -next
This patchset includes some misc updates for the HNS3 ethernet driver.
#1 & #2 add two cleanups.
#3 provides an interface for the client to query the CMDQ's status.
#4 adds a little optimization about debugfs.
#5 prevents 1000M auto-negotiation off setting.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Yufeng Mo [Sat, 9 May 2020 09:27:41 +0000 (17:27 +0800)]
net: hns3: disable auto-negotiation off with 1000M setting in ethtool
The 802.3 specification does not specify the behavior of
auto-negotiation off with 1000M in PHY. Therefore, some PHY
compatibility issues occur. This patch forbids the setting of
this unreasonable mode by ethtool in driver.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Yufeng Mo [Sat, 9 May 2020 09:27:40 +0000 (17:27 +0800)]
net: hns3: optimized the judgment of the input parameters of dump ncl config
This patch optimizes the judgment of the input parameters of dump ncl
config by checking the number and value of the input parameters apart.
It's clearer and more reasonable.
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Huazhong Tan [Sat, 9 May 2020 09:27:39 +0000 (17:27 +0800)]
net: hns3: provide .get_cmdq_stat interface for the client
This patch provides a new interface for the client to query
whether CMDQ is ready to work.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Huazhong Tan [Sat, 9 May 2020 09:27:38 +0000 (17:27 +0800)]
net: hns3: modify two uncorrect macro names
According to the UM, command 0x0B03 and 0x0B13 are used to
query the statistics about TX and RX, not the status, so
modifies the unsuitable macro name of these two command.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Huazhong Tan [Sat, 9 May 2020 09:27:37 +0000 (17:27 +0800)]
net: hns3: remove a redundant register macro definition
HCLGE_MISC_VECTOR_INT_STS and HCLGE_VECTOR_PF_OTHER_INT_STS_REG
both represent the misc interrupt status register(0x20800), so
removes HCLGE_VECTOR_PF_OTHER_INT_STS_REG and replaces it with
HCLGE_MISC_VECTOR_INT_STS.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sun, 10 May 2020 19:29:15 +0000 (12:29 -0700)]
Merge branch 'Ethernet-Cable-test-support'
Andrew Lunn says:
====================
Ethernet Cable test support
any copper Ethernet PHY have support for performing diagnostics of
the cable. Are the cable shorted, broken, not plugged into anything at
the other end? And they can report roughly how far along the cable any
fault is.
Add infrastructure in ethtool and phylib support for triggering a
cable test and reporting the results. The Marvell 1G PHY driver is
then extended to make use of this infrastructure.
For testing, a modified ethtool(1) can be found here:
https://github.com/lunn/ethtool.git feature/cable-test-v4. This also
contains extra code for TDR dump, which will be added to the kernel in
a later patch series.
Thanks to Chris Healy for extensive testing.
v2:
See individual patches but:
Remove _REPLY messages
Change length into a u32
Grammar fixes
Rename functions for consistency
Extack for cable test already running
Remove ethnl_cable_test_act_ops
Add status attributes
Rename pairs from numbers to letters
v3:
See individual patches but:
Remove ETHTOOL_MSG_CABLE_TEST_ACT_REPLY from documentation
Remove unused cable_test_get_policy
Fixed example in document
Add ETHTOOL_A_CABLE_NEST_* enum
Add ETHTOOL_MSG_CABLE_TEST_NTF to documentation
Poison phydev->skb
Return -EMSGSIZE when ethnl_bcastmsg_put() fails
Return valid error code when nla_nest_start() fails
Use u8 for results
Actually put u32 length into message
s/mavell/marvell/g
Remove include of <uapi/linux/ethtool_netlink.h>
EMSGSIZE when ethnl_bcastmsg_put() fails
Print an error message on failure, since this is a void function.
v4:
See individual patches but:
Remove unwanted blank line
ENOTSUPP->EOPNOTSUPP
Move EINVAL->EMSGSIZE fix to correct patch
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:40 +0000 (21:12 +0200)]
net: phy: Send notifier when starting the cable test
Given that it takes time to run a cable test, send a notify message at
the start, as well as when it is completed.
v3:
EMSGSIZE when ethnl_bcastmsg_put() fails
Print an error message on failure, since this is a void function.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:39 +0000 (21:12 +0200)]
net: phy: Put interface into oper testing during cable test
Since running a cable test is disruptive, put the interface into
operative state testing while the test is running.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:38 +0000 (21:12 +0200)]
net: phy: marvell: Add cable test support
The Marvell PHYs have a couple of different register sets for
performing cable tests. Page 7 provides the simplest to use.
v3:
s/mavell/marvell/g
Remove include of <uapi/linux/ethtool_netlink.h>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:37 +0000 (21:12 +0200)]
net: ethtool: Add helpers for reporting test results
The PHY drivers can use these helpers for reporting the results. The
results get translated into netlink attributes which are added to the
pre-allocated skbuf.
v3:
Poison phydev->skb
Return -EMSGSIZE when ethnl_bcastmsg_put() fails
Return valid error code when nla_nest_start() fails
Use u8 for results
Actually put u32 length into message
v4:
s/ENOTSUPP/EOPNOTSUPP/g
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:36 +0000 (21:12 +0200)]
net: ethtool: Add infrastructure for reporting cable test results
Provide infrastructure for PHY drivers to report the cable test
results. A netlink skb is associated to the phydev. Helpers will be
added which can add results to this skb. Once the test has finished
the results are sent to user space.
When netlink ethtool is not part of the kernel configuration stubs are
provided. It is also impossible to trigger a cable test, so the error
code returned by the alloc function is of no consequence.
v2:
Include the status complete in the netlink notification message
v4:
Replace -EINVAL with -EMSGSIZE
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:35 +0000 (21:12 +0200)]
net: ethtool: Make helpers public
Make some helpers for building ethtool netlink messages available
outside the compilation unit, so they can be used for building
messages which are not simple get/set.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:34 +0000 (21:12 +0200)]
net: ethtool: Add attributes for cable test reports
Add the attributes needed to report cable test results to userspace.
The reports are expected to be per twisted pair. A nested property per
pair can report the result of the cable test. A nested property can
also report the length of the cable to any fault.
v2:
Grammar fixes
Change length from u16 to u32
s/DEV/HEADER/g
Add status attributes
Rename pairs from numbers to letters.
v3:
Fixed example in document
Add ETHTOOL_A_CABLE_NEST_* enum
Add ETHTOOL_MSG_CABLE_TEST_NTF to documentation
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:33 +0000 (21:12 +0200)]
net: ethtool: netlink: Add support for triggering a cable test
Add new ethtool netlink calls to trigger the starting of a PHY cable
test.
Add Kconfig'ury to ETHTOOL_NETLINK so that PHYLIB is not a module when
ETHTOOL_NETLINK is builtin, which would result in kernel linking errors.
v2:
Remove unwanted white space change
Remove ethnl_cable_test_act_ops and use doit handler
Rename cable_test_set_policy cable_test_act_policy
Remove ETHTOOL_MSG_CABLE_TEST_ACT_REPLY
v3:
Remove ETHTOOL_MSG_CABLE_TEST_ACT_REPLY from documentation
Remove unused cable_test_get_policy
Add Reviewed-by tags
v4:
Remove unwanted blank line
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:32 +0000 (21:12 +0200)]
net: phy: Add support for polling cable test
Some PHYs are not capable of generating interrupts when a cable test
finished. They do however support interrupts for normal operations,
like link up/down. As such, the PHY state machine would normally not
poll the PHY.
Add support for indicating the PHY state machine must poll the PHY
when performing a cable test.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Andrew Lunn [Sun, 10 May 2020 19:12:30 +0000 (21:12 +0200)]
net: phy: Add cable test support to state machine
Running a cable test is desruptive to normal operation of the PHY and
can take a 5 to 10 seconds to complete. The RTNL lock cannot be held
for this amount of time, and add a new state to the state machine for
running a cable test.
The driver is expected to implement two functions. The first is used
to start a cable test. Once the test has started, it should return.
The second function is called once per second, or on interrupt to
check if the cable test is complete, and to allow the PHY to report
the status.
v2:
Rename phy_cable_test_abort to phy_abort_cable_test
Return different extack when already running test
Use phy_init_hw() to reset the PHY
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Sat, 9 May 2020 21:57:56 +0000 (22:57 +0100)]
net: usb: qmi_wwan: remove redundant assignment to variable status
The variable status is being initializeed with a value that is never read
and it is being updated later with a new value. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Sat, 9 May 2020 21:48:03 +0000 (22:48 +0100)]
net: huawei_cdc_ncm: remove redundant assignment to variable ret
The variable ret is being initializeed with a value that is never read
and it is being updated later with a new value. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Sat, 9 May 2020 21:41:11 +0000 (22:41 +0100)]
net: usb: ax88179_178a: remove redundant assignment to variable ret
The variable ret is being initializeed with a value that is never read
and it is being updated later with a new value. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
kbuild test robot [Sun, 10 May 2020 12:26:56 +0000 (20:26 +0800)]
dsa: sja1105: fix semicolon.cocci warnings
drivers/net/dsa/sja1105/sja1105_ethtool.c:481:11-12: Unneeded semicolon
Remove unneeded semicolon.
Generated by: scripts/coccinelle/misc/semicolon.cocci
Fixes:
ae1804de93f6 ("dsa: sja1105: dynamically allocate stats structure")
CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kevin Hao [Sat, 9 May 2020 10:43:10 +0000 (18:43 +0800)]
octeontx2-pf: Use the napi_alloc_frag() to alloc the pool buffers
In the current codes, the octeontx2 uses its own method to allocate
the pool buffers, but there are some issues in this implementation.
1. We have to run the otx2_get_page() for each allocation cycle and
this is pretty error prone. As I can see there is no invocation
of the otx2_get_page() in otx2_pool_refill_task(), this will leave
the allocated pages have the wrong refcount and may be freed wrongly.
2. It wastes memory. For example, if we only receive one packet in a
NAPI RX cycle, and then allocate a 2K buffer with otx2_alloc_rbuf()
to refill the pool buffers and leave the remain area of the allocated
page wasted. On a kernel with 64K page, 62K area is wasted.
IMHO it is really unnecessary to implement our own method for the
buffers allocate, we can reuse the napi_alloc_frag() to simplify
our code.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Gustavo A. R. Silva [Thu, 7 May 2020 18:59:21 +0000 (13:59 -0500)]
IB/mlx4: Replace zero-length array with flexible-array
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit
76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 9 May 2020 23:03:26 +0000 (16:03 -0700)]
Merge branch 'mlxsw-spectrum-Enforce-some-HW-limitations-for-matchall-TC-offload'
Ido Schimmel says:
====================
mlxsw: spectrum: Enforce some HW limitations for matchall TC offload
Jiri says:
There are some limitations for TC matchall classifier offload that are
given by the mlxsw HW dataplane. It is not possible to do sampling on
egress and also the mirror/sample vs. ACL (flower) ordering is fixed. So
check this and forbid to offload incorrect setup.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:10 +0000 (23:06 +0300)]
selftests: mlxsw: tc_restrictions: add couple of test for the correct matchall-flower ordering
Make sure that the drive restricts incorrect order of inserted matchall
vs. flower rules.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:09 +0000 (23:06 +0300)]
selftests: mlxsw: tc_restrictions: add test to check sample action restrictions
Check that matchall rules with sample actions are not possible to be
inserted to egress.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:08 +0000 (23:06 +0300)]
selftests: mlxsw: rename tc_flower_restrictions.sh to tc_restrictions.sh
The file is about to contain matchall restrictions too, so change the
name to make it more generic.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:07 +0000 (23:06 +0300)]
mlxsw: spectrum_flower: Forbid to insert flower rules in collision with matchall rules
On ingress, the matchall rules doing mirroring and sampling are offloaded
into hardware blocks that are processed before any flower rules.
On egress, the matchall mirroring rules are offloaded into hardware
block that is processed after all flower rules.
Therefore check the priorities of inserted flower rules against
existing matchall rules and ensure the correct ordering.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:06 +0000 (23:06 +0300)]
mlxsw: spectrum_matchall: Forbid to insert matchall rules in collision with flower rules
On ingress, the matchall rules doing mirroring and sampling are offloaded
into hardware blocks that are processed before any flower rules.
On egress, the matchall mirroring rules are offloaded into hardware
block that is processed after all flower rules.
Therefore check the priorities of inserted matchall rules against
existing flower rules and ensure the correct ordering.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:05 +0000 (23:06 +0300)]
mlxsw: spectrum_matchall: Expose a function to get min and max rule priority
Introduce an infrastructure that allows to get minimum and maximum
rule priority for specified chain. This is going to be used by
a subsequent patch to enforce ordering between flower and
matchall filters.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:04 +0000 (23:06 +0300)]
mlxsw: spectrum_matchall: Put matchall list into substruct of flow struct
As there are going to be other matchall specific fields in flow
structure, put the existing list field into matchall substruct.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:03 +0000 (23:06 +0300)]
mlxsw: spectrum_flower: Expose a function to get min and max rule priority
Introduce an infrastructure that allows to get minimum and maximum
rule priority for specified chain. This is going to be used by
a subsequent patch to enforce ordering between flower and
matchall filters.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jiri Pirko [Sat, 9 May 2020 20:06:02 +0000 (23:06 +0300)]
mlxsw: spectrum_matchall: Restrict sample action to be allowed only on ingress
HW supports packet sampling on ingress only. Check and fail if user
is adding sample on egress.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Luo bin [Fri, 8 May 2020 20:18:50 +0000 (20:18 +0000)]
hinic: add three net_device_ops of vf
adds ndo_set_vf_rate/ndo_set_vf_spoofchk/ndo_set_vf_link_state
to configure netdev of virtual function
Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 9 May 2020 20:39:26 +0000 (13:39 -0700)]
Merge tag 'mlx5-updates-2020-05-09' of git://git./linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2020-05-09
This series includes updates to mlx5 netdev driver and bonding updates
to support getting the next active tx slave.
1) merge commit with mlx5-next that includes bonding updates from Maor
Bonding: Add support to get xmit slave
2) Maxim makes some general code improvements to TX data path
3) Tariq makes some general code improvements to kTLS and mlx5 accel layer
in preparation for mlx5 TLS RX.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 9 May 2020 18:48:02 +0000 (11:48 -0700)]
Merge branch 'net-atlantic-driver-updates'
Mark Starovoytov says:
====================
net: atlantic: driver updates
This patch series contains several minor cleanups for the previously
submitted series.
We also add Marvell copyrights on newly touched files.
v2:
* accommodated review comments related to the last patch in series
(MAC generation)
v1: https://patchwork.ozlabs.org/cover/1285011/
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:47:00 +0000 (09:47 +0300)]
net: atlantic: unify MAC generation
This patch unifies invalid MAC address handling with other drivers.
Basically we've switched to using standard APIs (is_valid_ether_addr /
eth_hw_addr_random) where possible.
It's worth noting that some of engineering Aquantia NICs might be
provisioned with a partially zeroed out MAC, which is still invalid,
but not caught by is_valid_ether_addr(), so we've added a special
handling for this case.
Also adding a warning in case of fallback to random MAC, because
this shouldn't be needed on production NICs, they should all be
provisioned with unique MAC.
NB! Default systemd/udevd configuration is 'MACAddressPolicy=persistent'.
This causes MAC address to be persisted across driver reloads and
reboots. We had to change it to 'none' for verification purposes.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:59 +0000 (09:46 +0300)]
net: atlantic: remove check for boot code survivability before reset request
This patch removes unnecessary check for boot code survivability before
reset request.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:58 +0000 (09:46 +0300)]
net: atlantic: remove hw_atl_b0_hw_rss_set call from A2 code
No need to call hw_atl_b0_hw_rss_set from hw_atl2_hw_rss_set
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:57 +0000 (09:46 +0300)]
net: atlantic: remove TPO2 check from A0 code
TPO2 was introduced in B0 only, no reason to check for it in A0 code.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:56 +0000 (09:46 +0300)]
net: atlantic: rename AQ_NIC_RATE_2GS to AQ_NIC_RATE_2G5
This patch changes the constant name to a more logical "2G5"
(for 2.5G speeds).
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:55 +0000 (09:46 +0300)]
net: atlantic: minor MACSec code cleanup
This patch fixes a couple of minor merge issues found in macsec_api.c
after corresponding patch series has been applied.
These are not real bugs, so pushing to net-next.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mark Starovoytov [Sat, 9 May 2020 06:46:54 +0000 (09:46 +0300)]
net: atlantic: use __packed instead of the full expansion.
This patches fixes the review comment made by Jakub Kicinski
in the "net: atlantic: A2 support" patch series.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tariq Toukan [Mon, 16 Dec 2019 12:05:07 +0000 (14:05 +0200)]
net/mlx5e: Enhance ICOSQ WQE info fields
The same WQE opcode might be used in different ICOSQ flows
and WQE types.
To have a better distinguishability, replace it with an enum that
better indicates the WQE type and flow it is used for.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Mon, 30 Mar 2020 12:42:02 +0000 (15:42 +0300)]
net/mlx5: Accel, Remove unnecessary header include
The include of Ethernet driver header in core is not needed
and actually wrong.
Remove it.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Thu, 19 Mar 2020 14:50:14 +0000 (16:50 +0200)]
net/mlx5e: Use struct assignment for WQE info updates
Struct assignment looks more clean, and implies resetting
the not assigned fields to zero, instead of holding values
from older ring cycles.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Thu, 9 Apr 2020 10:43:43 +0000 (13:43 +0300)]
net/mlx5e: Take TX WQE info structures out of general EN header
Into the txrx header file.
The mlx5e_sq_wqe_info structure describes WQE info for the ICOSQ,
rename it to better reflect this.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Thu, 9 Apr 2020 09:53:31 +0000 (12:53 +0300)]
net/mlx5e: kTLS, Do not fill edge for the DUMP WQEs in TX flow
Every single DUMP WQE resides in a single WQEBB.
As the pi is calculated per each one separately, there is
no real need for a contiguous room for them, allow them to populate
different WQ fragments.
This reduces WQ waste and improves its utilization.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Thu, 9 Apr 2020 11:02:04 +0000 (14:02 +0300)]
net/mlx5e: kTLS, Fill work queue edge separately in TX flow
For the static and progress context params WQEs, do the edge
filling separately.
This improves the WQ utilization, code readability, and reduces
the chance of future bugs.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Wed, 29 Jan 2020 12:35:09 +0000 (14:35 +0200)]
net/mlx5e: Split TX acceleration offloads into two phases
After previous modifications, the offloads are no longer called one by
one, the pi is calculated and the wqe is cleared on between of TLS and
IPSEC offloads, which doesn't quite fit mlx5e_accel_handle_tx's purpose.
This patch splits mlx5e_accel_handle_tx into two functions that
correspond to two logical phases of running offloads:
1. Before fetching a WQE. Here runs the code that can post WQEs on its
own, before the main WQE is fetched. It's the main part of TLS offload.
2. After fetching a WQE. Here runs the code that updates the WQE's
fields, but can't post other WQEs any more. It's a minor part of TLS
offload that sets the tisn field in the cseg, and eseg-based offloads
(currently IPSEC, and later patches will move GENEVE and checksum
offloads there, too).
It allows to make mlx5e_xmit take care of all actions needed to transmit
a packet in the right order, improve the structure of the code and
reduce unnecessary operations. The structure will be further improved in
the following patches (all eseg-based offloads will be moved to a single
place, and reserving space for the main WQE will happen between phase 1
and phase 2 of offloads to eliminate unneeded data movements).
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Mon, 9 Dec 2019 10:30:42 +0000 (12:30 +0200)]
net/mlx5e: Update UDP fields of the SKB for GSO first
mlx5e_udp_gso_handle_tx_skb updates the length field in the UDP header
in case of GSO. It doesn't interfere with other offloads, so do it first
to simplify further restructuring of the code. This way we'll make all
independent modifications to the SKB before starting to work with WQEs.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Fri, 6 Dec 2019 14:42:09 +0000 (16:42 +0200)]
net/mlx5e: Make TLS offload independent of wqe and pi
TLS offload may write a 32-bit field (tisn) to the cseg of the WQE. To
do that, it receives pi and wqe pointers. As TLS offload may also send
additional WQEs, it has to update pi and wqe, and in many cases it even
doesn't use pi calculated before and wqe zeroed before and does it
itself. Also, mlx5e_sq_xmit has to copy the whole cseg if it goes to the
mlx5e_fill_sq_frag_edge flow. This all is not efficient.
It's more efficient to do the following:
1. Just return tisn from TLS offload and make the caller fill it in a
more appropriate place.
2. Calculate pi and clear wqe after calling TLS offload.
3. If TLS offload has to send WQEs, calculate pi and clear wqe just
before that. It's already done in all places anyway, so this commit
allows to remove some redundant memsets and calls.
Copying of cseg will be eliminated in one of the following commits, and
all other stuff is done here.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Fri, 6 Dec 2019 14:14:57 +0000 (16:14 +0200)]
net/mlx5e: Pass only eseg to IPSEC offload
IPSEC offload needs to modify the eseg of the WQE that is being filled,
but it receives a pointer to the whole WQE. To make the contract
stricter, pass only the pointer to the eseg of that WQE. This commit is
preparation for the following refactoring of offloads in the TX path and
for the MPWQE support.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Thu, 5 Dec 2019 16:11:16 +0000 (18:11 +0200)]
net/mlx5e: Return void from mlx5e_sq_xmit and mlx5i_sq_xmit
mlx5e_sq_xmit and mlx5i_sq_xmit always return NETDEV_TX_OK. Drop the
return value to simplify the code.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Fri, 3 Jan 2020 14:17:30 +0000 (16:17 +0200)]
net/mlx5e: Unify checks of TLS offloads
Both INNOVA and ConnectX TLS offloads perform the same checks in the
beginning. Unify them to reduce repeating code. Do WARN_ON_ONCE on
netdev mismatch and finish with an error in both offloads, not only in
the ConnectX one.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Maxim Mikityanskiy [Thu, 5 Dec 2019 16:07:25 +0000 (18:07 +0200)]
net/mlx5e: Return bool from TLS and IPSEC offloads
TLS and IPSEC offloads currently return struct sk_buff *, but the value
is either NULL or the same skb that was passed as a parameter. Return
bool instead to provide stronger guarantees to the calling code (it
won't need to support handling a different SKB that could be potentially
returned before this change) and to simplify restructuring this code in
the following commits.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Saeed Mahameed [Sat, 9 May 2020 07:06:35 +0000 (00:06 -0700)]
Merge branch 'mlx5-next' of git://git./linux/kernel/git/mellanox/linux
This merge includes updates to bonding driver needed for the rdma stack,
to avoid conflicts with the RDMA branch.
Maor Gottlieb Says:
====================
Bonding: Add support to get xmit slave
The following series adds support to get the LAG master xmit slave by
introducing new .ndo - ndo_get_xmit_slave. Every LAG module can
implement it and it first implemented in the bond driver.
This is follow-up to the RFC discussion [1].
The main motivation for doing this is for drivers that offload part
of the LAG functionality. For example, Mellanox Connect-X hardware
implements RoCE LAG which selects the TX affinity when the resources
are created and port is remapped when it goes down.
The first part of this patchset introduces the new .ndo and add the
support to the bonding module.
The second part adds support to get the RoCE LAG xmit slave by building
skb of the RoCE packet based on the AH attributes and call to the new
.ndo.
The third part change the mlx5 driver driver to set the QP's affinity
port according to the slave which found by the .ndo.
====================
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Colin Ian King [Fri, 8 May 2020 22:58:10 +0000 (23:58 +0100)]
net: lio_core: remove redundant assignment to variable tx_done
The variable tx_done is being assigned with a value that is never read
as the function returns a few statements later. The assignment is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Fri, 8 May 2020 22:33:21 +0000 (23:33 +0100)]
net/atheros: remove redundant assignment to variable size
The variable size is being assigned with a value that is never read,
the assignment is redundant and cab be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Fri, 8 May 2020 22:40:26 +0000 (23:40 +0100)]
cnic: remove redundant assignment to variable ret
The variable ret is being assigned with a value that is never read,
the assignment is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Fri, 8 May 2020 23:14:47 +0000 (00:14 +0100)]
net: tg3: tidy up loop, remove need to compute off with a multiply
Currently the value for 'off' is computed using a multiplication and
a couple of statements later off is being incremented by len and
this value is never read. Clean up the code by removing the
multiplication and just increment off by len on each iteration.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Sat, 9 May 2020 05:42:31 +0000 (22:42 -0700)]
Merge branch 'r8169-sync-few-functionalities-with-vendor-driver'
Heiner Kallweit says:
====================
r8169: sync few functionalities with vendor driver
Add few helpers (with names copied from vendor drivers) to make clearer
what the respective code is doing. In addition improve reset preparation
for chips from RTL8168g.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Fri, 8 May 2020 21:32:49 +0000 (23:32 +0200)]
r8169: improve reset handling for chips from RTL8168g
Sync the reset preparation for chips from RTL8168g with the r8168 and
r8125 vendor drivers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Fri, 8 May 2020 21:31:46 +0000 (23:31 +0200)]
r8169: add helper rtl_wait_txrx_fifo_empty
Add a helper for waiting for FIFO's to be empty, again the name is
borrowed from the vendor driver.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Fri, 8 May 2020 21:30:43 +0000 (23:30 +0200)]
r8169: add helper rtl_enable_rxdvgate
Add a helper for setting RXDV_GATED_EN, the 2ms delay is copied from
the vendor driver.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Fri, 8 May 2020 21:30:02 +0000 (23:30 +0200)]
r8169: add helper r8168g_wait_ll_share_fifo_ready
Create a helper for this waiting function, name of the helper is
borrowed from the vendor driver. In addition don't return in the two
hw_init functions if the first wait runs into a timeout, there's no
benefit in doing so.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Nathan Chancellor [Fri, 8 May 2020 19:41:33 +0000 (12:41 -0700)]
net: ipa: Remove ipa_endpoint_stop{,_rx_dma} again
When building arm64 allyesconfig:
drivers/net/ipa/ipa_endpoint.c: In function 'ipa_endpoint_stop_rx_dma':
drivers/net/ipa/ipa_endpoint.c:1274:13: error: 'IPA_ENDPOINT_STOP_RX_SIZE' undeclared (first use in this function)
drivers/net/ipa/ipa_endpoint.c:1274:13: note: each undeclared identifier is reported only once for each function it appears in
drivers/net/ipa/ipa_endpoint.c:1289:2: error: implicit declaration of function 'ipa_cmd_dma_task_32b_addr_add' [-Werror=implicit-function-declaration]
drivers/net/ipa/ipa_endpoint.c:1291:45: error: 'ENDPOINT_STOP_DMA_TIMEOUT' undeclared (first use in this function)
drivers/net/ipa/ipa_endpoint.c: In function 'ipa_endpoint_stop':
drivers/net/ipa/ipa_endpoint.c:1309:16: error: 'IPA_ENDPOINT_STOP_RX_RETRIES' undeclared (first use in this function)
These functions were removed in a series, merged in as
commit
33395f4a5c1b ("Merge branch 'net-ipa-kill-endpoint-stop-workaround'").
Remove them again so that the build works properly.
Fixes:
3793faad7b5b ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Fri, 8 May 2020 14:34:14 +0000 (07:34 -0700)]
ipv6: use DST_NOCOUNT in ip6_rt_pcpu_alloc()
We currently have to adjust ipv6 route gc_thresh/max_size depending
on number of cpus on a server, this makes very little sense.
If the kernels sets /proc/sys/net/ipv6/route/gc_thresh to 1024
and /proc/sys/net/ipv6/route/max_size to 4096, then we better
not track the percpu dst that our implementation uses.
Only routes not added (directly or indirectly) by the admin
should be tracked and limited.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: David Ahern <dsahern@kernel.org>
Cc: Maciej Żenczykowski <maze@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Samuel Zou [Fri, 8 May 2020 12:00:55 +0000 (20:00 +0800)]
net: dsa: sja1105: remove set but not used variable 'prev_time'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/dsa/sja1105/sja1105_vl.c:468:6: warning: variable ‘prev_time’ set but not used [-Wunused-but-set-variable]
u32 prev_time = 0;
^~~~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Samuel Zou <zou_wei@huawei.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Wei Yongjun [Fri, 8 May 2020 10:11:14 +0000 (10:11 +0000)]
net: dsa: vsc73xx: convert to devm_platform_ioremap_resource
Use the helper function that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Yang Yingliang [Fri, 8 May 2020 03:52:08 +0000 (11:52 +0800)]
ieee802154: 6lowpan: remove unnecessary comparison
The type of dispatch is u8 which is always '<=' 0xff, so the
dispatch <= 0xff is always true, we can remove this comparison.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Fri, 8 May 2020 01:58:10 +0000 (18:58 -0700)]
net/dst: use a smaller percpu_counter batch for dst entries accounting
percpu_counter_add() uses a default batch size which is quite big
on platforms with 256 cpus. (2*256 -> 512)
This means dst_entries_get_fast() can be off by +/- 2*(nr_cpus^2)
(131072 on servers with 256 cpus)
Reduce the batch size to something more reasonable, and
add logic to ip6_dst_gc() to call dst_entries_get_slow()
before calling the _very_ expensive fib6_run_gc() function.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Thu, 7 May 2020 17:05:39 +0000 (10:05 -0700)]
net: relax SO_TXTIME CAP_NET_ADMIN check
Now sch_fq has horizon feature, we want to allow QUIC/UDP applications
to use EDT model so that pacing can be offloaded to the kernel (sch_fq)
or the NIC.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 May 2020 01:11:07 +0000 (18:11 -0700)]
Merge branch 'bonding-report-transmit-status-to-callers'
Eric Dumazet says:
====================
bonding: report transmit status to callers
First patches cleanup netpoll, and make sure it provides tx status to its users.
Last patch changes bonding to not pretend packets were sent without error.
By providing more accurate status, TCP stack can avoid adding more
packets if the slave qdisc is already full.
This came while testing latest horizon feature in sch_fq, with
very low pacing rate flows, but should benefit hosts under stress.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 May 2020 16:32:22 +0000 (09:32 -0700)]
bonding: propagate transmit status
Currently, bonding always returns NETDEV_TX_OK to its caller.
It is worth trying to be more accurate : TCP for instance
can have different recovery strategies if it can have more
precise status, if packet was dropped by slave qdisc.
This is especially important when host is under stress.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 May 2020 16:32:21 +0000 (09:32 -0700)]
netpoll: accept NULL np argument in netpoll_send_skb()
netpoll_send_skb() callers seem to leak skb if
the np pointer is NULL. While this should not happen, we
can make the code more robust.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 May 2020 16:32:20 +0000 (09:32 -0700)]
netpoll: netpoll_send_skb() returns transmit status
Some callers want to know if the packet has been sent or
dropped, to inform upper stacks.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 May 2020 16:32:19 +0000 (09:32 -0700)]
netpoll: move netpoll_send_skb() out of line
There is no need to inline this helper, as we intend to add more
code in this function.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 7 May 2020 16:32:18 +0000 (09:32 -0700)]
netpoll: remove dev argument from netpoll_send_skb_on_dev()
netpoll_send_skb_on_dev() can get the device pointer directly from np->dev
Rename it to __netpoll_send_skb()
Following patch will move netpoll_send_skb() out-of-line.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 7 May 2020 14:34:30 +0000 (15:34 +0100)]
net: phy: fix less than zero comparison with unsigned variable val
The unsigned variable val is being checked for an error by checking
if it is less than zero. This can never occur because val is unsigned.
Fix this by making val a plain int.
Addresses-Coverity: ("Unsigned compared against zero")
Fixes:
bdbdac7649fa ("ethtool: provide UAPI for PHY master/slave configuration.")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
YueHaibing [Thu, 7 May 2020 14:24:06 +0000 (16:24 +0200)]
net/smc: remove set but not used variables 'del_llc, del_llc_resp'
Fixes gcc '-Wunused-but-set-variable' warning:
net/smc/smc_llc.c: In function 'smc_llc_cli_conf_link':
net/smc/smc_llc.c:753:31: warning:
variable 'del_llc' set but not used [-Wunused-but-set-variable]
struct smc_llc_msg_del_link *del_llc;
^
net/smc/smc_llc.c: In function 'smc_llc_process_srv_delete_link':
net/smc/smc_llc.c:1311:33: warning:
variable 'del_llc_resp' set but not used [-Wunused-but-set-variable]
struct smc_llc_msg_del_link *del_llc_resp;
^
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
zhang kai [Thu, 7 May 2020 03:08:30 +0000 (11:08 +0800)]
tcp: tcp_mark_head_lost is only valid for sack-tcp
so tcp_is_sack/reno checks are removed from tcp_mark_head_lost.
Signed-off-by: zhang kai <zhangkaiheb@126.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jacob Keller [Thu, 7 May 2020 00:58:27 +0000 (17:58 -0700)]
net: remove newlines in NL_SET_ERR_MSG_MOD
The NL_SET_ERR_MSG_MOD macro is used to report a string describing an
error message to userspace via the netlink extended ACK structure. It
should not have a trailing newline.
Add a cocci script which catches cases where the newline marker is
present. Using this script, fix the handful of cases which accidentally
included a trailing new line.
I couldn't figure out a way to get a patch mode working, so this script
only implements context, report, and org.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 May 2020 00:51:03 +0000 (17:51 -0700)]
Merge branch 'ti-am65x-cpts-follow-up-dt-bindings-update'
Grygorii Strashko says:
====================
net: ethernet: ti: am65x-cpts: follow up dt bindings update
This series is follow update for TI A65x/J721E Common platform time sync (CPTS)
driver [1] to implement DT bindings review comments from
Rob Herring <robh@kernel.org> [2].
- "reg" and "compatible" properties are made required for CPTS DT nodes which
also required to change K3 CPSW driver to use of_platform_device_create()
instead of of_platform_populate() for proper CPTS and MDIO initialization
- minor DT bindings format changes
- K3 CPTS example added to K3 MCU CPSW bindings
[1] https://lwn.net/Articles/819313/
[2] https://lwn.net/ml/linux-kernel/
20200505040419.GA8509@bogus/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Wed, 6 May 2020 18:14:01 +0000 (21:14 +0300)]
arm64: dts: ti: k3-am65/j721e-mcu: update cpts node
Update CPTS node following DT binding update:
- add reg and compatible properties
- fix node name
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Wed, 6 May 2020 18:14:00 +0000 (21:14 +0300)]
dt-binding: net: ti: am65x-cpts: make reg and compatible required
This patch follows K3 CPTS review comments from Rob Herring
<robh@kernel.org>.
- "reg" and "compatible" properties are required now
- minor format changes
- K3 CPTS example added to K3 MCU CPSW bindings
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Wed, 6 May 2020 18:13:59 +0000 (21:13 +0300)]
net: ethernet: ti: am65-cpsw-nuss: use of_platform_device_create() for mdio
The MCU CPSW expected to populate only MDIO device, but follow up patches
will add "compatible" property to the MCU CPSW CPTS node which will cause
creation of CPTS device and MCU CPSW init failure. Hence, switch to use
of_platform_device_create() instead of of_platform_populate() for MDIO
device population.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 May 2020 00:40:02 +0000 (17:40 -0700)]
Merge branch 'hsr-hsr-code-refactoring'
Taehee Yoo says:
====================
hsr: hsr code refactoring
There are some unnecessary routine in the hsr module.
This patch removes these routines.
The first patch removes incorrect comment.
The second patch removes unnecessary WARN_ONCE() macro.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ioana Ciornei [Wed, 6 May 2020 17:47:17 +0000 (20:47 +0300)]
dpaa2-eth: create a function to flush the XDP fds
Create an independent function that takes a particular frame queue and
an array of frame descriptors and tries to enqueue them until it hits
the maximum number fo retries. The same function will be used in the
next patch also on the XDP_TX path.
Also, create the dpaa2_eth_xdp_fds structure to incorporate the array of
FDs as well as the number of FDs already populated.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo [Wed, 6 May 2020 15:47:45 +0000 (15:47 +0000)]
hsr: remove WARN_ONCE() in hsr_fill_frame_info()
When VLAN frame is being sent, hsr calls WARN_ONCE() because hsr doesn't
support VLAN. But using WARN_ONCE() is overdoing.
Using netdev_warn_once() is enough.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ioana Ciornei [Tue, 5 May 2020 20:14:29 +0000 (23:14 +0300)]
soc: fsl: dpio: properly compute the consumer index
Mask the consumer index before using it. Without this, we would be
writing frame descriptors beyond the ring size supported by the QBMAN
block.
Fixes:
3b2abda7d28c ("soc: fsl: dpio: Replace QMAN array mode with ring mode enqueue")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 May 2020 00:31:57 +0000 (17:31 -0700)]
Merge branch 'tc-gate-offload-for-SJA1105-DSA-switch'
Vladimir Oltean says:
====================
tc-gate offload for SJA1105 DSA switch
Expose the TTEthernet hardware features of the switch using standard
tc-flower actions: trap, drop, redirect and gate.
v1 was submitted at:
https://patchwork.ozlabs.org/project/netdev/cover/
20200503211035.19363-1-olteanv@gmail.com/
v2 was submitted at:
https://patchwork.ozlabs.org/project/netdev/cover/
20200503211035.19363-1-olteanv@gmail.com/
Changes in v3:
Made sure there are no compilation warnings when
CONFIG_NET_DSA_SJA1105_TAS or CONFIG_NET_DSA_SJA1105_VL are disabled.
Changes in v2:
Using a newly introduced dsa_port_from_netdev public helper.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Tue, 5 May 2020 19:20:57 +0000 (22:20 +0300)]
docs: net: dsa: sja1105: document intended usage of virtual links
Add some verbiage describing how the hardware features of the switch are
exposed to users through tc-flower.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Tue, 5 May 2020 19:20:56 +0000 (22:20 +0300)]
net: dsa: sja1105: implement tc-gate using time-triggered virtual links
Restrict the TTEthernet hardware support on this switch to operate as
closely as possible to IEEE 802.1Qci as possible. This means that it can
perform PTP-time-based ingress admission control on streams identified
by {DMAC, VID, PCP}, which is useful when trying to ensure the
determinism of traffic scheduled via IEEE 802.1Qbv.
The oddity comes from the fact that in hardware (and in TTEthernet at
large), virtual links always need a full-blown action, including not
only the type of policing, but also the list of destination ports. So in
practice, a single tc-gate action will result in all packets getting
dropped. Additional actions (either "trap" or "redirect") need to be
specified in the same filter rule such that the conforming packets are
actually forwarded somewhere.
Apart from the VL Lookup, Policing and Forwarding tables which need to
be programmed for each flow (virtual link), the Schedule engine also
needs to be told to open/close the admission gates for each individual
virtual link. A fairly accurate (and detailed) description of how that
works is already present in sja1105_tas.c, since it is already used to
trigger the egress gates for the tc-taprio offload (IEEE 802.1Qbv). Key
point here, we remember that the schedule engine supports 8
"subschedules" (execution threads that iterate through the global
schedule in parallel, and that no 2 hardware threads must execute a
schedule entry at the same time). For tc-taprio, each egress port used
one of these 8 subschedules, leaving a total of 4 subschedules unused.
In principle we could have allocated 1 subschedule for the tc-gate
offload of each ingress port, but actually the schedules of all virtual
links installed on each ingress port would have needed to be merged
together, before they could have been programmed to hardware. So
simplify our life and just merge the entire tc-gate configuration, for
all virtual links on all ingress ports, into a single subschedule. Be
sure to check that against the usual hardware scheduling conflicts, and
program it to hardware alongside any tc-taprio subschedule that may be
present.
The following scenarios were tested:
1. Quantitative testing:
tc qdisc add dev swp2 clsact
tc filter add dev swp2 ingress flower skip_sw \
dst_mac 42:be:24:9b:76:20 \
action gate index 1 base-time 0 \
sched-entry OPEN 1200 -1 -1 \
sched-entry CLOSE 1200 -1 -1 \
action trap
ping 192.168.1.2 -f
PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data.
.............................
--- 192.168.1.2 ping statistics ---
948 packets transmitted, 467 received, 50.7384% packet loss, time 9671ms
2. Qualitative testing (with a phase-aligned schedule - the clocks are
synchronized by ptp4l, not shown here):
Receiver (sja1105):
tc qdisc add dev swp2 clsact
now=$(phc_ctl /dev/ptp1 get | awk '/clock time is/ {print $5}') && \
sec=$(echo $now | awk -F. '{print $1}') && \
base_time="$(((sec + 2) *
1000000000))" && \
echo "base time ${base_time}"
tc filter add dev swp2 ingress flower skip_sw \
dst_mac 42:be:24:9b:76:20 \
action gate base-time ${base_time} \
sched-entry OPEN 60000 -1 -1 \
sched-entry CLOSE 40000 -1 -1 \
action trap
Sender (enetc):
now=$(phc_ctl /dev/ptp0 get | awk '/clock time is/ {print $5}') && \
sec=$(echo $now | awk -F. '{print $1}') && \
base_time="$(((sec + 2) *
1000000000))" && \
echo "base time ${base_time}"
tc qdisc add dev eno0 parent root taprio \
num_tc 8 \
map 0 1 2 3 4 5 6 7 \
queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \
base-time ${base_time} \
sched-entry S 01 50000 \
sched-entry S 00 50000 \
flags 2
ping -A 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
...
^C
--- 192.168.1.1 ping statistics ---
1425 packets transmitted, 1424 packets received, 0% packet loss
round-trip min/avg/max = 0.322/0.361/0.990 ms
And just for comparison, with the tc-taprio schedule deleted:
ping -A 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
...
^C
--- 192.168.1.1 ping statistics ---
33 packets transmitted, 19 packets received, 42% packet loss
round-trip min/avg/max = 0.336/0.464/0.597 ms
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>