Commit Graph

2462 Commits

Author SHA1 Message Date
Wenzhuo Lu
92717a8e9b net/i40e: fix broadcast promiscuous mode setting
When setting up the VSIs, MAC filter is used for
receiving MAC broadcast packets.
We should follow it to implement the broadcast
promiscuous mode setting.

Fixes: 61fff9b4c6 ("net/i40e: set VF broadcast mode from PF")
Cc: stable@dpdk.org

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-04-04 18:59:41 +02:00
Chas Williams
04df93d1ed net/vmxnet3: fix queue size changes
If the user reconfigures the queue size, then the previously allocated
memzone may potentially be too small.  Release the memzone when a queue
is released and allocate a new one each time a queue is setup.

While here convert to rte_eth_dma_zone_reserve() which does basically
the same things as the private function.

Fixes: dfaff37fc4 ("vmxnet3: import new vmxnet3 poll mode driver implementation")
Cc: stable@dpdk.org

Signed-off-by: Chas Williams <ciwillia@brocade.com>
Acked-by: Jan Blunck <jblunck@infradead.org>
Acked-by: Shrikrishna Khare <skhare@vmware.com>
2017-04-04 18:59:41 +02:00
Pascal Mazon
2d3ebfeea9 net/tap: add flow control management
A tap netdevice does not support flow control; ensure nothing but
RTE_FC_NONE mode can be set.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:41 +02:00
Pascal Mazon
0849ac3b61 net/tap: add packet type management
Advertise packet types supported by the librte_net.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
730651c27c net/tap: add multicast addresses management
A tap netdevice actually receives every packet, without any filtering
whatsoever. There is no need for any multicast address registration
to receive multicast packets.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
4a25714ad9 net/tap: add speed capabilities
Tap PMD is flexible, it supports any speed.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
e5dc143a42 net/tap: add MTU management
The MTU is assigned to the tap netdevice according to the argument, but
packet transmission and reception just write/read on an fd with the
default limit being the socket buffer size.

As a new rte_eth_dev_data is allocated during tap device init, ensure it
is set again dev->data->mtu.
Once the actual netdevice is created via tun_alloc(), make sure to apply
the desired MTU to the netdevice.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
f76d46b4ff net/tap: add MAC address management
As soon as the netdevice is created, update pmd->mac_addr with its
actual MAC address.

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
73cf55c8bd net/tap: refactor ioctl calls
Create a socket for ioctl at tap device creation instead of opening it
and closing it every call to tap_link_set_flags().

Use a common tap_ioctl() function that can be extended for various uses
(such as MTU change, MAC address change, ...).

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Pascal Mazon
9d4aabe66a net/tap: remove NO-ARP setting
There is no reason not to support ARP on a tap netdevice. Remove
IFF_NOARP flags.
Focus on IFF_UP when a link status change is required.

Fixes: f457b472b1 ("net/tap: add link up and down operations")

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:40 +02:00
Ivan Malov
223a29a25e net/sfc: add VFs to the table of PCI IDs for supported NICs
Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:59:40 +02:00
Ivan Malov
4650ed44c1 net/sfc: support MCDI proxy
The patch is to add support for MCDI proxy which comes in
useful, particularly, while running over VF: few commands
will normally fail with EPERM, but in some cases the host
driver (i.e. running over the corresponding PF, typically,
within a hypervisor) may set itself as a proxy to conduct
authorization for the commands coming from VFs; these are
forwarded to the corresponding access control application
which may decline or approve authorization by replying to
the requests; all in all, the guest driver has to process
the replies forwarded back by the firmware MC in order to
give up gracefully (by setting return code which could be
understood by 'libefx') or re-issue the original commands

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
2017-04-04 18:59:40 +02:00
Ivan Malov
f5258439ee net/sfc: avoid failure on port start if Rx mode is rejected
If Rx mode is unacceptable, in particular, when promiscuous
or all-multicast filters are not allowed while running over
PCI function which is not a member of appropriate privilege
groups, the driver has to cope with the failures gracefully

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:59:40 +02:00
Ivan Malov
178fc0d327 net/sfc: poll MAC stats if periodic DMA is not supported
If periodic DMA statistics feature is absent (particularly,
while running over VF), the PMD must provide an ability to
cope with it using explicit update requests which are kept
restrained according to 'stats_update_period_ms' parameter

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
2017-04-04 18:59:40 +02:00
Ivan Malov
e56fa9c23e net/sfc: add kvarg control for MAC statistics update period
The patch is to make MAC statistics update interval tunable
by means of 'stats_update_period_ms' kvarg parameter making
it possible to use values different from 1000 ms in case of
SFN8xxx boards provided that firmware version is 6.2.1.1033

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:59:40 +02:00
Andrew Rybchenko
fe8e3dc248 net/sfc/base: do not ignore MAC stats update period
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-04-04 18:59:40 +02:00
Yong Wang
1207f3f722 net/ena: fix return of hash control flushing
In function ena_com_set_hash_ctrl(), the return value is assigned to
"ret" variable, but it is not returned. Fix it by adding the return.

Fixes: 99ecfbf845 ("ena: import communication layer")
Cc: stable@dpdk.org

Signed-off-by: Yong Wang <wang.yong19@zte.com.cn>
Acked-by: Jan Medala <jan@semihalf.com>
2017-04-04 18:59:40 +02:00
Yong Wang
70153557a9 net/ena: remove redundant variable
Signed-off-by: Yong Wang <wang.yong19@zte.com.cn>
Acked-by: Jan Medala <jan@semihalf.com>
2017-04-04 18:59:39 +02:00
Johan Samuelsson
8dc7358b28 net/pcap: fix using mbuf after freeing it
Fixes: 2269e7e815 ("pcap: add Rx and Tx byte counters")
Cc: stable@dpdk.org

Signed-off-by: Johan Samuelsson <johan.xb.samuelsson@ericsson.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 18:59:39 +02:00
Olivier Matz
e3efd85bf9 net/i40e: fix error log in descriptor done function
It's not queue identifier but a descriptor identifier.

Fixes: 4861cde461 ("i40e: new poll mode driver")

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2017-04-04 18:59:39 +02:00
Shahaf Shuler
3c7d44af25 net/mlx5: support user space Rx interrupt event
Implement rxq interrupt callbacks

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
2017-04-04 18:59:39 +02:00
Adrien Mazarguil
a0d8e807d9 net/tap: add Rx trigger
This commit adds a signal-based trigger to the Rx burst function in order
to avoid unnecessary system calls while Rx queues are empty.

Triggered Rx bursts put less pressure on the kernel, free up CPU resources
for applications and result in a noticeable performance improvement when
sharing CPU threads with other PMDs.

Measuring the traffic forwarding rate between two physical devices in
testpmd (IO mode, single thread, 64B packets) before and after adding two
tap PMD instances (4 ports total) that do not process any traffic and
comparing results yields:

Without Rx trigger:

 -15% (--burst=32)
 -62% (--burst=1)

With Rx trigger:

 -0.3% (--burst=32)
 -6% (--burst=1)

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
2017-04-04 18:59:39 +02:00
Adrien Mazarguil
d3668acb7b net/tap: remove redundant syscall on Tx
Polling the Tx queue file descriptor before writing to it is not mandatory
since it is configured as non-blocking.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
2017-04-04 18:59:39 +02:00
Jerin Jacob
34c2e7026f net/thunderx: check data offset alignment requirement
nicvf HW expects the DMA address of the packet data to be
aligned with cache line size.

Packet data offset is a function of struct mbuf size,
mbuf private size and headroom. mbuf private size can
be changed from the application in pool creation, this
check detects HW alignment requirement constraint in pmd
start function.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
2017-04-04 18:59:39 +02:00
Allain Legacy
0934b7f12a net/e1000: advertise offload capabilities for the EM PMD
The hardware offload capabilities are not being advertised for the EM PMD.
Because of this, applications that only enable these features if the device
advertises them will never do so.

Normally this is not an issue since normal packet processing should work
even if hardware offload is not available.  But, in older versions of
Virtual Box the e1000 device emulation (Intel PRO/1000 MT Desktop 82540EM)
assumes that it should enable VLAN stripping even if the driver does not
request it.  This means that any ingress packets that have a VLAN tag will
be stripped.  Since the application did not request to enable VLAN
stripping it is not expecting these packets so they are not processed as
VLAN packets.

Regardless of the Virtual Box issue, the driver should be advertising
supported capabilities as is done in other drivers.

Signed-off-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-04-04 18:59:39 +02:00
Ivan Malov
295f647a38 net/sfc: set multicast address list in started state only
According to 'libefx' API requirements, one is allowed to
apply multicast address list to the port in started state
only, otherwise the new array should be copied to a local
storage in order to be applied during the next port start

Coverity issue: 141296
Fixes: 0fa0070e43 ("net/sfc: support multicast addresses list controls")

Fixes: e9ddf37a50 ("net/sfc: fix setting empty multicast list")
Cc: stable@dpdk.org

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
2017-04-04 18:59:23 +02:00
Roman Zhukov
8cb45c97d3 net/sfc: add unknown unicast/multicast match in flow API
Support individual/group destination address match (unknown unicast
and all-multicast correspondingly in terms of firmware).

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:59:15 +02:00
Roman Zhukov
e01f84f42c net/sfc: support UDP in flow API filters
Exact match of source and destination ports is supported by parser.
IP protocol match is enforced to UDP.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:59:02 +02:00
Roman Zhukov
e267513244 net/sfc: support TCP in flow API filters
Exact match of source and destination ports is supported by parser.
IP protocol match is enforced to TCP.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:58:47 +02:00
Roman Zhukov
07cd4c2eed net/sfc: support IPV6 in flow API filters
Exact match of IP protocol, source and destination
addresses is supported by parser.
EtherType match is enforced to IPv6 EtherType.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:58:33 +02:00
Roman Zhukov
9f5e606535 net/sfc: support IPV4 in flow API filters
Exact match of IP protocol, source and destination
addresses is supported by parser.
EtherType match is enforced to IPv4 EtherType.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:58:14 +02:00
Roman Zhukov
894080975e net/sfc: support VLAN in flow API filters
Exact match of VLAN ID bits is supported only and required in VLAN item.
Mask to match VLAN ID bits only is required, default mask to match entire
TCI is not supported.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
2017-04-04 18:57:54 +02:00
Roman Zhukov
a9825ccf5b net/sfc: support flow API filters
Only pattern items VOID, ETH and actions VOID, QUEUE is now
supported.

Signed-off-by: Roman Zhukov <roman.zhukov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-04-04 18:57:21 +02:00
Andrew Rybchenko
791f57ac6b net/sfc: provide a way to check if filter is supported
The information is obtained from firmware on attach. It may
change after MC reboot (firmware version or variant change).
Cache should be refreshed after MC reboot when it is handled
properly (not yet).

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
2017-04-04 15:52:52 +02:00
Andrew Rybchenko
403030f573 net/sfc: implement dummy filter control callback
Just log error for all filter types and return no support indication.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
2017-04-04 15:52:52 +02:00
Mark Spender
23c6d0dbac net/sfc/base: improve API to get supported filter matches
The previous API had various problems, including the length of the
caller provided buffer not being specified, no means being available
to discover how big the buffer needs to be, and a lack of clarity of
what the resulting list contains.

To improve it:
- add the buffer length as a parameter
- if the provided buffer is too short, fail with ENOSPC and return
  the required length
- ensure that the list contents are valid and add comments describing it

It is safe to change this API as, unsurprisingly, it has no users.

Signed-off-by: Mark Spender <mspender@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-04-04 15:52:52 +02:00
Mark Spender
daa007afd0 net/sfc/base: split local MAC I/G back into separate flags
The flag EFX_FILTER_MATCH_LOC_MAC_IG to represent filtering on the
individual/group bit of the MAC address (with the two cases being
distinguished by the MAC address in the filter specification) was
introduced to mirror the Linux driver filtering code, but the
implementations are different enough anyway that it isn't of much
value.

Having separate flags for unknown unicast and multicast simplifies
the code and allows the set of flags to match those used by MCDI.

It will also makes it easier to report whether these filters are
supported.

In the MCDI definitions, the unknown multicast and unicast flags
have the values 0x40000000 and 0x80000000 respectively, and so using
the same values for simplicity requires 32 bits in the filter
specification to store the flags. This means the structure is now
a little bigger than 64 bytes, but filters are not often used on
critical paths so this shouldn't have much impact - on Linux they
are also bigger than they used to be.

Signed-off-by: Mark Spender <mspender@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-04-04 15:52:52 +02:00
Ido Barnea
09deb98222 net/ixgbevf: set xstats id values
Without setting the id, calling xstats_get twice with same array causes
memory corruption.

Also, if IXGBEVF_NB_XSTATS will be different than 1 in the future,
this will cause issues.

Fixes: 156712ba40 ("ixgbevf: add extending stats")

Signed-off-by: Ido Barnea <ibarnea@cisco.com>
2017-04-04 15:52:52 +02:00
Shahaf Shuler
2a6c96be13 net/mlx5: fix TSO TCP checksum flag
Since PKT_TX_TCP_SEG implies PKT_TX_TCP_CKSUM, the PMD must force this
flag.
The fix applied for both tunneled and non-tunneled packets.

Fixes: 3f13f8c23a ("net/mlx5: support hardware TSO")
Fixes: b247f34601 ("net/mlx5: support hardware TSO for VXLAN and GRE")

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
42936846b1 net/fm10k/base: add base driver information
Add base driver information in Makefile.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
756101d42d net/fm10k/base: request reset on mailbox state change
Multiple IES API resets can cause a race condition where the mailbox
interrupt request bits can be cleared before being handled. This can
leave certain mailbox messages from the PF to be untreated and the PF
will enter in some inactive state. If this situation occurs, the IES API
will initiate a mailbox version reset which, then, trigger a mailbox
state change. Once this mailbox transition occurs (from OPEN to CONNECT
state), a request for reset will be returned.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
ab0fa5457f net/fm10k/base: replace macros
Other shared code bases are planning on using
IS_MULTICAST_ETHER_ADDR and friends without leaving the driver
name in the macro.
Remove reference to FM10K here so that we can re-use the specific
compat flags from Linux.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
a94bceb1e3 net/fm10k/base: improve re-map queues handle
Avoid potential FUM fault errors on a VF when updating MAC address
and VLAN information. Only use the register flow when the mailbox is
disconnected, by checking if the enqueue_tx returns
FM10K_MBX_ERR_NO_MBX. If the mailbox message can be sent, there is no
reason to bother with the register writes which are only intended to
be used during VF driver initialization.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
e448248229 net/fm10k/base: add macro for geneve tunnel offload
add necessary macro to support geneve tunnel offload.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
52f962141b net/fm10k/base: do not stop reset
Don't report FM10K_ERR_REQUESTS_PENDING when we fail to disable queues
within the timeout. This can occur due to a hardware Tx hang, or when
the switch ethernet fabric is resetting while we are transmitting
traffic. It can sometimes take up to 500ms before the Tx DMA engine
gives up. Instead, just skip the DMA engine check and perform
a data-path reset anyways. Add a statistic counter to keep track of the
number of resets occurring while we have pending DMA on the rings.

In order to prevent having to assign err = FM10K_SUCCESS, re-order the
last few items of the reset_hw_pf function so that we don't perform
"return err" at the end.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
e9861ae847 net/fm10k/base: add macros for global interrupt
Add two macros for global interrupt.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
60028b4bdf net/fm10k/base: enable lport map request
If the fm10k interface is brought up, but the switch manager software is
not running, the driver will continuously request the lport map every
few seconds in the base driver watchdog routine. Eventually after
several minutes the switch mailbox Tx fifo will fill up and the mailbox
will timeout, resulting in a reset. This reset will appear as if for no
reason, and occurs regularly every few minutes until the switch manager
software is loaded.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
a5db0e8004 net/fm10k/base: improve VF multi-bit VLAN update requests
The VF uses a multi-bit update request to clear unused VLANs whenever it
resets. However, an accident in a previous refactor broke multi-bit
updates for VFs, due to misreading a comment in fm10k_vf.c and
attempting to reduce code duplication. The problem occurs because
a multi-bit request has a non-zero length, and the PF would simply drop
any request with the upper 16 bits set. In addition, a multi-bit vlan
update does not have a concept for "VLAN 0" as the single bit update
does.

A previous revision of this patch resolved the issue by simply removing
the upper 16 bit check and the iov_select_vid checks. However, this would
remove the checks for default VID and for ensuring no other VLANs can be
enabled except pf_vid when it has been set. To resolve that issue, this
revision uses the iov_select_vid when we have a single-bit update, and
denies any multi-bit update when the VLAN was administratively set by
the PF. This should be ok since the PF properly updates VLAN_TABLE when
it assigns the PF vid. This ensures that requests to add or "remove" the
PF vid work as expected, but a rogue VF could not use the multi-bit
update as a loophole to attempt receiving traffic on other VLANs.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
c631e94842 net/fm10k/base: update comment regarding reserved bits check
The original comment may be read incorrectly as referring to checking
the *entire* length is zero. However, it merely checks only the reserved
bits of both length and reserved in a small amount of code. Update the
comment to indicate this is a clever trick and clearly spell out that it
only checks the reserve bits.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
99cb088c1e net/fm10k/base: use different name for override bit
Use a new #define FM10K_VLAN_OVERRIDE even though we're using
the exact same bit. The reason for this is clarity in the code,
otherwise you can read FM10K_VLAN_CLEAR and think it should be
removed. Also add a comment explaining why the FM10K_VLAN_OVERRIDE
bit is set.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00