2755 Commits

Author SHA1 Message Date
Maciej Gajdzica
2c2b14bfa0 examples/ip_pipeline: add application thread
Application thread runs pipelines on assigned cores.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:46 +02:00
Jasvinder Singh
ea0908c4ab examples/ip_pipeline: add master pipeline
Master pipeline is responsible for command line handling and
communicationg with all other pipelines via message queues. Removed
cmdline.c file, as its functionality will be split over multiple
pipeline files.

Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:46 +02:00
Maciej Gajdzica
bff54484b2 examples/ip_pipeline: move pipelines to separate directory
Moved pipelines to separate folder, removed not needed pipelines and
modified Makefile to match that change.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:46 +02:00
Maciej Gajdzica
eb32fe7c55 examples/ip_pipeline: rework initialization parameters
After changes in config parser, app params struct is changed and
requires modifications in initialization procedures.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:46 +02:00
Jasvinder Singh
f505f045c4 examples/ip_pipeline: add config file checks
After loading configuration from a file, data integrity is checked.

Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:45 +02:00
Pawel Wodkowski
7f64b9c004 examples/ip_pipeline: rework config file syntax
New syntax of config files is needed for ip_pipeline example
enhancements. Some old files are temporarily disabled in the Makefile.
It is part of a bigger change.

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:45 +02:00
Maciej Gajdzica
d27f716ad7 pipeline: fix missing exported symbols
Exported symbols for port in, port out and table stats.

Fixes: 6504bb5ec460 ("pipeline: add statistics for ports and tables")

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
Acked-by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:45 +02:00
Maciej Gajdzica
7c6e7a0e38 port: fix missing exported symbols
Exported symbols for nodrop, fragmentation, reassembly ports

Fixes: 304c8091e90a ("port: add ethdev writer nodrop")
Fixes: 5f4cd47309d6 ("port: add ring writer nodrop")
Fixes: bf673b7553e1 ("port: add IPv6 fragmentation port")
Fixes: 50f54a84dfb7 ("port: add IPv6 reassembly port")

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
Acked-by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
2015-07-09 17:25:45 +02:00
David Marchand
d307f7957c eal/linux: fix out of bound access in hugepage init
Using IBM advance toolchain on Ubuntu 14.04 (package 8.0-3), gcc is complaining
about out of bound accesses.

  CC eal_hugepage_info.o
lib/librte_eal/linuxapp/eal/eal_hugepage_info.c:
In function ‘eal_hugepage_info_init’:
lib/librte_eal/linuxapp/eal/eal_hugepage_info.c:350:35:
error: array subscript is above array bounds [-Werror=array-bounds]
      internal_config.hugepage_info[j].hugepage_sz)
                                   ^
lib/librte_eal/linuxapp/eal/eal_hugepage_info.c:350:35:
error: array subscript is above array bounds [-Werror=array-bounds]
lib/librte_eal/linuxapp/eal/eal_hugepage_info.c:349:37:
error: array subscript is above array bounds [-Werror=array-bounds]
    if (internal_config.hugepage_info[j-1].hugepage_sz <
                                     ^
lib/librte_eal/linuxapp/eal/eal_hugepage_info.c:350:35:
error: array subscript is above array bounds [-Werror=array-bounds]
      internal_config.hugepage_info[j].hugepage_sz)

Looking at the code, these warnings are invalid from my pov and they disappeared
when upgrading the toolchain to new version (8.0-4).

However, the code was buggy (sorting code is wrong), so fix this by using qsort
and adding a check on num_sizes to avoid potential out of bound accesses.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:22 +02:00
David Marchand
202337059d eal/linux: fix indent of hugepage init
With this, we should be checkpatch compliant.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:21 +02:00
David Marchand
e1d09b00d7 eal/linux: rework loop in hugepage init
Replace this while loop with a for loop and simplify error handling.
Indent is broken on purpose, fixed in next commit.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:21 +02:00
David Marchand
b47c247eae eal/linux: improve coding style of hugepage init
Prepare for checkpatch compliance.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:21 +02:00
David Marchand
7392dde0cc eal/linux: remove useless casts in hugepage init
Rather than cast the huge pages number returned by get_num_hugepages, rework
this function so that it returns 0 when something goes wrong.
And no need for casts in log.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:21 +02:00
David Marchand
78615624b0 eal/linux: remove useless process type check in hugepage init
The code in eal_hugepage_info.c is not reachable by secondary processes.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-07-09 14:20:21 +02:00
Bruce Liu
b347adf962 hash: fix build on non-x86 arch
In the no-x86 branch, a parentheses is missing.
And need to include <limits.h> header to use CHAR_BIT.

Fixes: 49361c3f3cfa ("hash: remove duplicated code")

Signed-off-by: Bruce Liu <2103458176@qq.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2015-07-09 03:20:11 +02:00
Helin Zhang
0e3f2317bc app/testpmd: show the hash key size
As querying hash key size in byte was supported, it can be shown
in testpmd after getting the device information if not zero.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2015-07-09 01:14:56 +02:00
Helin Zhang
8208e85a22 ethdev: add the hash key size per device
To support querying hash key size per port, an new field of
'hash_key_size' was added in 'struct rte_eth_dev_info' for storing
hash key size in bytes.

The correct hash key size in bytes should be filled into the
'struct rte_eth_dev_info', to support querying it.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2015-07-09 01:14:51 +02:00
Thomas Monjalon
506f51cc0d mk: enable next abi preview
When a change makes really hard to keep ABI compatibility,
instead of waiting next release to break the ABI, it is smoother
to introduce the new code as a preview and disable it when packaging.
The flag RTE_NEXT_ABI must be used to "ifdef" the new code.
When the release is out, a dynamically linked application can use
the new shared libraries with the old ABI while developpers can prepare
their application for the next ABI by reading the deprecation notice
and easily testing the new code.
When starting the next release cycle, the "ifdefs" will be removed
and the ABI break will be marked by incrementing LIBABIVER. The map
files will also be updated.

The default value is enabled to be developer compliant.
The packagers must disable it as done in pkg/dpdk.spec.
When enabled, all shared library numbers are incremented by appending
a minor .1 to the old ABI number. In the next release, only impacted
libraries will have a major +1 increment.
The impacted libraries must provide an alternative map file to use
with this option.

The ABI policy is updated.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
2015-07-09 00:56:40 +02:00
Thomas Monjalon
e7c6d6fc22 mk: remove variables identical to config ones
CONFIG_RTE_BUILD_SHARED_LIB and CONFIG_RTE_BUILD_COMBINE_LIBS does not
have quotes in their values (only y or n). That's why the variables
RTE_BUILD_SHARED_LIB and RTE_BUILD_COMBINE_LIBS are always identical to
their CONFIG_ counterpart, and are useless.
In order to have consistent naming of config options in the makefiles,
these options are removed and the "CONFIG_ prefixed" variables are used.

Fixes: e25e4d7ef16b ("mk: shared libraries")
Fixes: 4d3d79e7a5c6 ("mk: combined library")

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
2015-07-09 00:55:57 +02:00
Raz Amir
40adab038d nic_uio: probe and attach devices after unload
Added code that saves the pointers to the detached devices, during
driver loading, and during driver unloading, go over the list,
and re-attach them by calling device_probe_and_attach
on each device.

Signed-off-by: Raz Amir <razamir22@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2015-07-09 00:48:27 +02:00
Tetsuya Mukawa
390cb6b89c eal: enable port hotplug as default for linux and bsd
This patch removes CONFIG_RTE_LIBRTE_EAL_HOTPLUG option, and enables it
as default in both Linux and BSD.
Also, to support port hotplug, rte_eal_pci_scan() and below missing
symbols should be exported to ethdev library.
 - rte_eal_parse_devargs_str()
 - rte_eal_pci_close_one()
 - rte_eal_pci_probe_one()
 - rte_eal_pci_scan()
 - rte_eal_vdev_init()
 - rte_eal_vdev_uninit()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
2015-07-09 00:18:25 +02:00
Tetsuya Mukawa
4d4ebca430 pci: merge probing and closing functions for linux and bsd
This patch consolidates below functions, and implements these in common
eal code.
 - rte_eal_pci_probe_one_driver()
 - rte_eal_pci_close_one_driver()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
35b3313e32 pci: merge mapping functions for linux and bsd
The patch consolidates below functions, and implemented in common
eal code.
 - pci_map_device()
 - pci_unmap_device()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
9b957f378a pci: merge uio functions for linux and bsd
The patch consolidates below functions, and implement these
in eal_common_pci_uio.c.
 - pci_uio_map_secondary()
 - pci_uio_map_resource()
 - pci_uio_unmap()
 - pci_uio_find_resource()
 - pci_uio_unmap_resource()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
9f1b81c099 pci: merge resource mapping functions for linux and bsd
The patch consolidates below functions, and implemented in common
eal code.
 - pci_map_resource()
 - pci_unmap_resource()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
0801f9fc5b pci: merge mapping structures for linux and bsd
This patch consolidates below structures, and defines them in common code.
 - struct pci_map
 - struct mapped_pci_resources

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
ea9d56226e pci: introduce function to map uio resource by index
This patch adds a new function called pci_uio_map_resource_by_index().
The function hides how to map uio resource in linuxapp and bsdapp.
With the function, pci_uio_map_resource() will be more abstracted.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
5a60a7ffc8 pci: introduce functions to alloc and free uio resource
This patch adds new functions called pci_uio_alloc_resource() and
pci_uio_free_resource().
The functions hides how to prepare or free uio resource in linuxapp
and bsdapp. With the function, pci_uio_map_resource() will be more
abstracted.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
f83b0b9189 pci: fix uio mapping differences between linux and bsd
This patch fixes below.
- bsdapp
 - Use map_id in pci_uio_map_resource().
 - Fix interface of pci_map_resource().
 - Move path variable of mapped_pci_resource structure to pci_map.
- linuxapp
 - Remove redundant error message of linuxapp.

'pci_uio_map_resource()' is implemented in both linuxapp and bsdapp,
but interface is different. The patch fixes the function of bsdapp
to do same as linuxapp. After applying it, file descriptor should be
opened and closed out of pci_map_resource().

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
76c02ea927 pci/bsd: rename structures
To merge pci code of linuxapp and bsdapp, this patch changes names
like below.
 - uio_map to pci_map
 - uio_resource to mapped_pci_resource
 - uio_res_list to mapped_pci_res_list

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
1acc43383c pci: fix memory leaks and needless increment of map address
This patch fixes following memory leaks.
- When open() is failed, uio_res and fds won't be freed in
  pci_uio_map_resource().
- When pci_map_resource() is failed but path is allocated correctly,
  path and fds won't be freed in pci_uio_map_recource().
  Also, some mapped resources should be freed.
- When pci_uio_unmap() is called, path should be freed.

Also, fixes below.
- When pci_map_resource() is failed, mapaddr will be MAP_FAILED.
  In this case, pci_map_addr should not be incremented in
  pci_uio_map_resource().
- To shrink code, move close().
- Remove fail variable.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
d428dab038 pci: close file descriptor of uio configuration
When pci_uio_unmap_resource() is called, a file descriptor that is used
for uio configuration should be closed.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2015-07-08 23:50:22 +02:00
Tetsuya Mukawa
77d583d72f pci: fix coding style
This patch fixes coding style of below files in linuxapp and bsdapp.
 - eal_pci.c
 - eal_pci_uio.c

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: David Marchand <david.marchand@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
2015-07-08 23:50:22 +02:00
Pablo de Lara
7c5d0cc915 eal: add const in prefetch functions
rte_prefetchX functions included volatile void *p as parameter,
but the function does not modify it,
so it should include the const keyword.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2015-07-08 12:12:59 +02:00
Jingjing Wu
2be3d6322b i40e: fix build with gcc 4.4
Fix the build warning reported like:
   error: dereferencing pointer 'cmd' does break strict-aliasing rules

Fixes: a4def5edf0fc ("i40e: enable port mirroring")

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2015-07-08 11:22:36 +02:00
Jingjing Wu
75ba29fd14 app/testpmd: add flow director for L2 payload
This patch extends flow director commands to support l2_payload flow type.

Test report: http://dpdk.org/ml/archives/dev/2015-June/020238.html

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 23:23:36 +02:00
Jingjing Wu
2ff04ae56f i40e: add flow director for L2 payload
This patch extends flow director to support l2_payload flow
type in i40e driver.

Test report: http://dpdk.org/ml/archives/dev/2015-June/020238.html

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 23:22:27 +02:00
Jingjing Wu
9b50a331f7 ethdev: add flow director for L2 payload
This patch adds a new struct rte_eth_l2_flow to support
l2_payload flow type.

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 23:20:56 +02:00
Jingjing Wu
a4def5edf0 i40e: enable port mirroring
enable mirror functionality in i40e driver
.mirror_rule_set
.mirror_rule_reset

Test report: http://dpdk.org/ml/archives/dev/2015-June/019118.html

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 17:45:45 +02:00
Jingjing Wu
7ba29a76b1 ethdev: rename and extend the mirror type
This path renames the mirror type in rte_eth_mirror_conf and macros,
and rework the mirror set in ixgbe drivers by using new definition.
It also fixes some coding style.

Test report: http://dpdk.org/ml/archives/dev/2015-June/019118.html

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 17:45:45 +02:00
Jingjing Wu
b85e1cc502 ethdev: rename port mirroring structure
Rename rte_eth_vmdq_mirror_conf to rte_eth_mirror_conf and move
the maximum rule id check from ethdev level to driver.

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2015-07-07 17:39:32 +02:00
Helin Zhang
1e68544674 examples/ipv4_multicast: support double vlan stripping and insertion
The outer vlan should be copied from source packet buffer to
support double vlan stripping and insertion, as double vlan can be
stripped or inserted by some of NIC hardware.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:42:49 +02:00
Helin Zhang
92ebda07ee app/testpmd: add qinq stripping and insertion
If double vlan is detected, its stripped flag and vlan tags can be
printed on rxonly mode. Test command of 'tx_vlan set' is expanded
to set both single and double vlan tags on TX side for each packets
to be sent out.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:42:11 +02:00
Helin Zhang
4fa5e9f59b i40evf: fix offload capability flags
Add checksum offload capability flags which have already been
supported for a long time.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:40:15 +02:00
Helin Zhang
cc9d0456b8 i40e: support double vlan stripping and insertion
It configures specific registers to enable double vlan stripping
on RX side and insertion on TX side.
The RX descriptors will be parsed, the vlan tags and flags will be
saved to corresponding mbuf fields if vlan tag is detected.
The TX descriptors will be configured according to the
configurations in mbufs, to trigger the hardware insertion of
double vlan tags for each packets sent out.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:40:04 +02:00
Helin Zhang
dc6c911c99 mbuf: use reserved space for double vlan
Use the reserved 16 bits in rte_mbuf structure for the outer vlan,
also add QinQ offloading flags for both RX and TX sides.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:39:32 +02:00
Helin Zhang
61e4d90f27 ixgbe: remove a discarded source line
Little endian to CPU order conversion had been added for reading
vlan tag from RX descriptor, while its original source line was
forgotten to delete. That's a discarded source line and should be
deleted.

Fixes: 23fcffe8ffac ("ixgbe: fix id and hash with flow director")

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2015-07-07 16:36:26 +02:00
Zoltan Kiss
72514b5d55 ethdev: fix check of threshold for Tx freeing
The parameter tx_free_thresh is not consistent between the drivers:
some use it as rte_eth_tx_burst() requires, some release buffers when
the number of free descriptors drop below this value.
Let's use it as most fast-path code does, which is the latter, and update
comments throughout the code to reflect that.

Signed-off-by: Zoltan Kiss <zoltan.kiss@linaro.org>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2015-07-07 16:31:48 +02:00
Bruce Richardson
b35d0d80f0 ixgbe: check mbuf refcnt when clearing a ring
The function to clear the TX ring when a port was being closed, e.g. on
exit in testpmd, was not checking the mbuf refcnt before freeing it.
Since the function in the vector driver to clear the ring after TX does
not set the pointer to NULL post-free, this caused crashes if mbuf
debugging was turned on.

To reproduce the issue, ensure the follow config variables are set:
RTE_IXGBE_INC_VECTOR
RTE_LIBRTE_MBUF_DEBUG
Then compile up and run testpmd using 10G ports with the vector driver.
Start traffic and let some flow through, then type "stop" and "quit" at
the testpmd prompt, and crash will occur. Output below:

	testpmd> quit
	Stopping port 0...done
	Stopping port 1...PANIC in rte_mbuf_sanity_check():
	bad ref cnt
	[New Thread 0x7fffabfff700 (LWP 145312)]
	[New Thread 0x7fffb47fe700 (LWP 145311)]
	[New Thread 0x7fffb4fff700 (LWP 145310)]
	[New Thread 0x7ffff6cd5700 (LWP 145309)]
	18: [/home/bruce/dpdk.org/x86_64-native-linuxapp-gcc/app/testpmd(_start+0x29)
	<....snip for brevity...>
	Program received signal SIGABRT, Aborted.
	0x00007ffff7120a98 in raise () from /lib64/libc.so.6

A similar error occurs when clearing the RX ring, which is also fixed by
this patch.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2015-07-07 16:31:48 +02:00
Bruce Richardson
4ca29c87ed ixgbe: use cold attribute
As well as the fast-path functions in the rxtx code, there are also
functions which set up and tear down the descriptor rings. Since these
are not performance critical functions, there is no need to have them
extensively optimized, so we add __attribute__((cold)) to their
definitions. This has the side-effect of making debugging them easier as
the compiler does not optimize them as heavily, so more variables are
accessible by default in gdb.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2015-07-07 16:31:48 +02:00