255 Commits

Author SHA1 Message Date
Thomas Monjalon
f17ca7870f memzone: rename address from physical to IOVA
The struct rte_memzone field .phys_addr is renamed to .iova.
The deprecated name is kept in an anonymous union to avoid breaking
the API.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
2017-11-06 22:25:44 +01:00
Gaetan Rivet
c752998b5e pci: introduce library and driver
The PCI lib defines the types and methods allowing to use PCI elements.

The PCI bus implements a bus driver for PCI devices by constructing
rte_bus elements using the PCI lib.

Move the relevant code out of the EAL to its expected place.

Libraries, drivers, unit tests and applications are updated to use the
new rte_bus_pci.h header when necessary.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
2017-10-26 23:17:31 +02:00
David Harton
289ba0c0f5 ethdev: allow returning error on VLAN offload ops
Some devices may not support or fail setting VLAN offload
configuration based on dynamic circumstances so the
vlan_offload_set_t vector is modified to return an int so
the caller can determine success or not.

rte_eth_dev_set_vlan_offload is updated to return the
value provided by the vector when called along with restoring
the original offload configs on failure.

Existing vlan_offload_set_t vectors are modified to return
an int.  Majority of cases return 0 but a few that actually
can fail now return their failure codes.

Finally, a vlan_offload_set_t vector is added to virtio
to facilitate dynamically turning VLAN strip on or off.

Signed-off-by: David Harton <dharton@cisco.com>
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Olivier Matz
380a7aab1a mbuf: rename deprecated VLAN flags
PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT are deprecated for a while.
As explained in [1], these flags were kept to let the applications and
PMDs move to the new flag. There is also a need to support Rx vlan
offload without vlan strip (at least for the ixgbe driver).

This patch renames the old flags for this feature, knowing that some
PMDs were using PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT to indicate that
the vlan tci has been saved in the mbuf structure.

It is likely that some PMDs do not set the proper flags when doing vlan
offload, and it would be worth making a pass on all of them.

Link: [1] http://dpdk.org/ml/archives/dev/2017-June/067712.html

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Gaetan Rivet
00a3d8104a ethdev: remove detachable device flag
This flag is not necessary at the ether layer anymore.
Buses are able to advertise their hotplug support. The ether layer can
rely upon this capability instead of a special flag.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
2017-10-26 02:33:01 +02:00
Xiao Wang
ac0decfa08 net/fm10k: support switch restart on VF
For VF events indicating a change in the state of the switch manager,
the driver will restore the basic port configurations and then pass this
event to application so that the application can restore any additional
configurations if required.

In this way, once the switch manager restarts, the DPDK application can
resume its network.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Xiao Wang
6c9f372455 net/fm10k: support switch restart on PF
For PF events indicating a change in the state of the switch manager,
the driver will restore the basic port configurations and then pass this
event to application so that the application can restore any additional
configurations if required.

In this way, once the switch manager restarts, the DPDK application can
resume its network.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Xiao Wang
6f22f2f672 net/fm10k: redefine link status semantics
As fm10k host interface is not directly connected to PHY, marking the
link status as UP doesn't mean a lot to the application.

So, this patch basically redefines the link status as the state of
switch manager: when switch manager is running, it's LINK_UP;
when switch manager goes down by calling the fmTerminate function,
status turns to LINK_DOWN.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Olivier Matz
cbc12b0a96 mk: do not generate LDLIBS from directory dependencies
The list of libraries in LDLIBS was generated from the DEPDIRS-xyz
variable. This is valid when the subdirectory name match the library
name, but it's not always the case, especially for PMDs.

The patches removes this feature and explicitly adds the proper
libraries in LDLIBS.

Some DEPDIRS-xyz variables become useless, remove them.

Reported-by: Gage Eads <gage.eads@intel.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Gage Eads <gage.eads@intel.com>
2017-10-24 02:14:57 +02:00
Zhiyong Yang
299609434d net/fm10k: fix port id type
The variable "port" should be defined as uint16_t, fix it here.

Fixes: f8244c6399d9 ("ethdev: increase port id range")

Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
2017-10-13 21:57:48 +02:00
Luca Boccassi
62bc760dea mk: sort source files before compilation
In order to achieve reproducible builds, always use the same
order when listing files for compilation.

Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
2017-10-12 22:31:33 +02:00
Jianfeng Tan
f37dfab21c drivers/net: enable IOVA mode for Intel PMDs
If we want to enable IOVA mode, introduced by
commit 93878cf0255e ("eal: introduce helper API for IOVA mode"),
we need PMDs (for PCI devices) to expose this flag.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Reviewed-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
2017-10-12 21:05:32 +01:00
Matan Azrad
d5b0924ba6 ethdev: add return value to stats get dev op
The stats_get dev op API doesn't include return value, so PMD cannot
return an error in case of failure at stats getting process time.

Since PCI devices can be removed and there is a time between the
physical removal to the RMV interrupt, the user may get invalid stats
without any indication.

This patch changes the stats_get API return value to be int instead of
void.

All the net PMDs stats_get dev ops are adjusted by this patch.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-12 01:52:49 +01:00
Jianfeng Tan
a7cb2e20d2 mem: remove API to get physical address in dom0
Previously, to get MFN address in dom0, this API is a wrapper to
obtain the "physical address".

As we will removed xen dom0 support, this API is not necessary.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2017-10-09 01:52:37 +02:00
Zhiyong Yang
f8244c6399 ethdev: increase port id range
Extend port_id definition from uint8_t to uint16_t in lib and drivers
data structures, specifically rte_eth_dev_data. Modify the APIs,
drivers and app using port_id at the same time.

Fix some checkpatch issues from the original code and remove some
unnecessary cast operations.

release_17_11 and deprecation docs have been updated in this patch.

Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-06 18:23:25 +02:00
Xiao Wang
20c0a0c4e8 net/fm10k: initialize link status in device start
Fm10k host driver can't manage PHY directly and provides a fake link
status by always reporting LINK_UP. We should initialize link status
in device start, otherwise application will get LINK_DOWN status
when LSC configured.

Fixes: 9ae6068c86da ("fm10k: add dev start/stop")
Cc: stable@dpdk.org

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Acked-by: Jing Chen <jing.d.chen@intel.com>
2017-07-06 15:00:56 +02:00
Ferruh Yigit
c0802544d9 drivers/net: add generic ethdev macro to get PCI device
Instead of many PMD define their own macro, define a generic one in
ethdev and use that in PMDs.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-06-12 10:41:25 +01:00
Ferruh Yigit
dd2c630a5f drivers/net: remove unnecessary macro for unused variables
remove __rte_unused instances that are not required.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-06-12 10:41:25 +01:00
Bruce Richardson
02c217b154 net/fm10k: add compile-time checks to vector driver
The vector PMD is very sensitive to the layout of the mbuf, especially on
the RX path. Add in some compile-time checks to make sure the mbuf layout
assumptions are valid, and to provide hints to anyone changing the mbuf
where things may need to be updated.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2017-06-12 10:41:25 +01:00
Jerin Jacob
c0583d98a9 eal: introduce macro for always inline
Different drivers use internal macros like force_inline for compiler
always inline feature.
Standardizing it through __rte_always_inline macro.

Verified the change by comparing the output binary file.
No difference found in the output binary file with this change.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2017-06-06 17:21:55 +02:00
David Marchand
06e81dc9b7 drivers/net: fix vfio kmod dependency
vfio is the kernel framework used by the vfio-pci kernel driver.
DPDK drivers do not rely solely on vfio, but rather on vfio-pci to gain
access to pci resources.

Fixes: 0880c40113ef ("drivers: advertise kmod dependencies in pmdinfo")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-06-05 20:56:54 +02:00
Bruce Richardson
803d48340c drivers/net: disable new gcc 7 warnings for base code
For base code in drivers shared with other projects, disable the new
warnings from gcc 7 about unlabelled fall-through in switch statements.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2017-05-05 18:27:09 +02:00
Qi Zhang
70fca51612 net/fm10k: fix memory overflow in 32-bit SSE Rx
Return mbuf points of _recv_raw_pkts_vec are modified out of bound.

Fixes: a6ce64a97520 ("fm10k: introduce vector driver")
Cc: stable@dpdk.org

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-05-05 17:40:21 +02:00
Wei Dai
6d01e580ac ethdev: fix adding invalid MAC address
Some customers find adding MAC addr to VF sometimes can fail,
but it is still stored in dev->data->mac_addrs[ ]. So this
can lead to some errors that assumes the non-zero entry in
dev->data->mac_addrs[ ] is valid.
Following acknowledgements are from specific NIC PMD
maintainer for their managing part.

This patch changes the ethdev internal API, it should not be
backported to a stable/LTS release so far.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Wei Dai <wei.dai@intel.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-05-05 16:27:11 +02:00
Jan Blunck
fdf91e0f2f drivers/net: do not use ethdev driver
Signed-off-by: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
2017-04-18 19:05:46 +02:00
Qi Zhang
c23a1a3000 eal: clean up interrupt handle
The patch change the prototype of callback function
(rte_intr_callback_fn) by removing the unnecessary parameter.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-06 21:15:55 +02:00
Jerin Jacob
dc448dc460 mbuf: make rearm data address naturally aligned
To avoid multiple stores on fast path, Ethernet drivers
aggregate the writes to data_off, refcnt, nb_segs and port
to an uint64_t data and write the data in one shot
with uint64_t* at &mbuf->rearm_data address.

Some of the non-IA platforms have store operation overhead
if the store address is not naturally aligned.This patch
fixes the performance issue on those targets.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2017-04-05 11:30:29 +02:00
Olivier Matz
54e9290269 mbuf: make segment prefree function public
Document the function and make it public, since it is used at several
places in the drivers. The old one is marked as deprecated.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2017-04-05 11:30:29 +02:00
Xiao Wang
88e4ed70b3 net/fm10k: fix secondary process crash
If the primary process has initialized all the queues to vector
pmd mode, the secondary process should not use scalar code path,
because the per queue data structures haven't been prepared for
that, e.g. txq->ops is for vector Tx rather than scalar Tx.

Fixes: a6ce64a97520 ("fm10k: introduce vector driver")
Cc: stable@dpdk.org

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Acked-by: Jing Chen <jing.d.chen@intel.com>
2017-04-04 19:03:02 +02:00
Zhiyong Yang
d6a33bbf65 net/fm10k: remove limit of Tx burst size
To add a wrapper function to remove the limit of tx burst size.
The patch makes fm10k vec function an best effort to transmit
pkts in the consistent behavior like fm10k_xmit_pkts does that.

Cc: Jing Chen <jing.d.chen@intel.com>
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2017-04-04 19:02:55 +02:00
Xiao Wang
6a1db11448 net/fm10k: fix pointer cast
The device specific data is located at dev->data->dev_private.

Fixes: 162f32290a99 ("fm10k: move parameters initialization")
Fixes: 039991bc28ff ("fm10k: add vector pre-condition check")
Fixes: 77a8ab47eb38 ("fm10k: select best Rx function")
Cc: stable@dpdk.org

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-04-04 19:02:49 +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
Qi Zhang
65afffe6e3 net/fm10k/base: update comment to use 8 bit notation
The diagram represents bit layout of the multi-bit VLAN update
message format. Re-draw the numbers using base 8, and mark the
bit values every 8 bits at the top. This should make it more
easy to grasp the table quickly.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
7cc79a91f3 net/fm10k/base: add new item to lport msg attr
Add FM10K_PF_ATTR_ID_ERR, since it is possible for the switch manager
to send out an error message indicating status of the LPORT_MAP due to
zero allocated bandwidth.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
890fc30fbf net/fm10k/base: clean up the logic
Clean up the logic in fm10k_tlv_attr_parse, we
should not reply on that FM10K_NOT_IMPLEMENTED is
greater than zero, as this can easily cause confusion.
The patch also correct a minor document error.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
0de9c88abb net/fm10k/base: add error code
Add API error code for when PEP is not scheduled.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
883a735c69 net/fm10k/base: expose macros needed by DPDK
Add back macros that DPDK required and remove the redundant ones
in fm10k_osdep.h.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
22025588e4 net/fm10k/base: reset multicast mode when deleting lport
Deleting lport when multicast mod is configured to
FM10K_XCAST_MODE_ALLMULTI or FM10K_XCAST_MODE_PROMISC will
result in generating orphaned multicast-group entries in the
switch manager.
Before deleting the lport, reset multicast mode to
FM10K_XCAST_MODE_NONE to flush out these multicast-group
entries.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Qi Zhang
43f8858078 net/fm10k/base: add a flag to indicate VF trust mode
Adds boolean flag in fm10k_vf_info to support configuring
a VF to be trusted.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-04 15:52:52 +02:00
Olivier Matz
feb9f680cd mk: optimize directory dependencies
Before this patch, the management of dependencies between directories
had several issues:

- the generation of .depdirs, done at configuration is slow: it can take
  more than one minute on some slow targets (usually ~10s on a standard
  PC without -j).

- for instance, it is possible to express a dependency like:
  - app/foo depends on lib/librte_foo
  - and lib/librte_foo depends on app/bar
  But this won't work because the directories are traversed with a
  depth-first algorithm, so we have to choose between doing 'app' before
  or after 'lib'.

- the script depdirs-rule.sh is too complex.

- we cannot use "make -d" for debug, because the output of make is used for
  the generation of .depdirs.

This patch moves the DEPDIRS-* variables in the upper Makefile, making
the dependencies much easier to calculate. A DEPDIRS variable is still
used to process library dependencies in LDLIBS.

After this commit, "make config" is almost immediate.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Tested-by: Robin Jarry <robin.jarry@6wind.com>
Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-03-27 23:28:43 +02:00