Since port id has changed from uint8_t to uint16_t in dpdk code,
So update the change in related doc.
Fixes: f8244c6399d9 ("ethdev: increase port id range")
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
This patch adds a new eth_dev layer API function rte_eth_dev_reset(),
which a DPDK application can call to reset a NIC and keep its port id
afterwards. It means that all software resources allocated in the ethdev
layer are kept, and software & hardware resources of the NIC within the
NIC's PMD are reset to a state simular to that obtained by calling the
PCI dev_uninit() and then dev_init(). This effective sequence of
dev_uninit() and dev_init() is packed into a single API function
rte_eth_dev_reset().
Please see the comments before the declaration of rte_eht_dev_reset()
in lib/librte_ether/rte_ethdev.h to get more details on why this
function is needed, what it does, when it should be called
and what an application should do after calling this function.
See also detailed explanations in the programmer's guide.
Signed-off-by: Wei Dai <wei.dai@intel.com>
Reviewed-by: Remy Horton <remy.horton@intel.com>
Introducing the DEV_TX_OFFLOAD_MT_LOCKFREE TX capability flag.
if a PMD advertises DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads
can invoke rte_eth_tx_burst() concurrently on the same tx queue without
SW lock. This PMD feature will be useful in the following use cases and
found in the OCTEON family of NPUs.
1) Remove explicit spinlock in some applications where lcores
to TX queues are not mapped 1:1.
example: OVS has such instance
https://github.com/openvswitch/ovs/blob/master/lib/netdev-dpdk.c#L299https://github.com/openvswitch/ovs/blob/master/lib/netdev-dpdk.c#L1859
See the the usage of tx_lock spinlock.
2) In the eventdev use case, avoid dedicating a separate TX core for
transmitting and thus enables more scaling as all workers can
send the packets.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Extended xstats API in ethdev library to allow grouping of stats
logically so they can be retrieved per logical grouping managed
by the application.
Added new functions rte_eth_xstats_get_names_by_id and
rte_eth_xstats_get_by_id using additional arguments (in compare
to rte_eth_xstats_get_names and rte_eth_xstats_get) - array of ids
and array of values.
doc: add description for modified xstats API
Documentation change for new extended statistics API functions.
The old API only allows retrieval of *all* of the NIC statistics
at once. Given this requires a MMIO read PCI transaction per statistic
it is an inefficient way of retrieving just a few key statistics.
Often a monitoring agent only has an interest in a few key statistics,
and the old API forces wasting CPU time and PCIe bandwidth in retrieving
*all* statistics; even those that the application didn't explicitly
show an interest in.
The new, more flexible API allow retrieval of statistics per ID.
If a PMD wishes, it can be implemented to read just the required
NIC registers. As a result, the monitoring application no longer wastes
PCIe bandwidth and CPU time.
Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Revert patches to provide clear view for
upcoming changes. Reverted patches are listed below:
commit ea85e7d711b6 ("ethdev: retrieve xstats by ID")
commit a954495245c4 ("ethdev: get xstats ID by name")
commit 1223608adb9b ("app/proc-info: support xstats by ID")
commit 25e38f09af9c ("net/e1000: support xstats by ID")
commit 923419333f5a ("net/ixgbe: support xstats by ID")
Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Extended xstats API in ethdev library to allow grouping of stats
logically so they can be retrieved per logical grouping managed
by the application.
Changed existing functions rte_eth_xstats_get_names and
rte_eth_xstats_get to use a new list of arguments: array of ids
and array of values. ABI versioning mechanism was used to
support backward compatibility.
Introduced two new functions rte_eth_xstats_get_all and
rte_eth_xstats_get_names_all which keeps functionality of the
previous ones (respectively rte_eth_xstats_get and
rte_eth_xstats_get_names) but use new API inside.
test-pmd: add support for new xstats API retrieving by id in
testpmd application: xstats_get() and
xstats_get_names() call with modified parameters.
doc: add description for modified xstats API
Documentation change for modified extended statistics API functions.
The old API only allows retrieval of *all* of the NIC statistics
at once. Given this requires a MMIO read PCI transaction per statistic
it is an inefficient way of retrieving just a few key statistics.
Often a monitoring agent only has an interest in a few key statistics,
and the old API forces wasting CPU time and PCIe bandwidth in retrieving
*all* statistics; even those that the application didn't explicitly
show an interest in.
The new, more flexible API allow retrieval of statistics per ID.
If a PMD wishes, it can be implemented to read just the required
NIC registers. As a result, the monitoring application no longer wastes
PCIe bandwidth and CPU time.
Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Acked-by: Harry van Haaren <harry.van.haaren@intel.com>
Add a new API to force free consumed buffers on Tx ring. API will return
the number of packets freed (0-n) or error code if feature not supported
(-ENOTSUP) or input invalid (-ENODEV).
Signed-off-by: Billy McFall <bmcfall@redhat.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
- Remove wrong document description:
The Programmer’s Guide intro is not the Release Notes.
- Fix heading of section which only deals with Tx queues configuration.
- Fix wrong verbatim text paragraphs:
Reduce the indentation of these paragraphs since they are not part of the
verbatim block.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: John McNamara <john.mcnamara@intel.com>
For all drivers that currently implement xstats, the id field in the
rte_eth_stats_name structure equals the entry's array index. This
patch eliminates the redundant id field as a direct index lookup is
faster than a search for the matching id field.
Suggested-by: Olivier Matz <olivier.matz@6wind.com>
Signed-off-by: Remy Horton <remy.horton@intel.com>
The current extended ethernet statistics fetching involve doing several
string operations, which causes performance issues if there are lots of
statistics and/or network interfaces. This patch changes the xstats
functions to instead use a numeric identifier rather than a string, and
adds the ability to retrieve identifier-to-string mappings.
Signed-off-by: Remy Horton <remy.horton@intel.com>
Update the strings used for presenting stats to adhere
to the scheme previously presented. Updated xstats_get()
function to handle Q information only if xstats() is not
implemented in the PMD, providing the PMD with the needed
flexibility to expose its extended Q stats.
Add extended statistic section to the programmers
guide, poll mode driver section. This section describes
how the strings stats are formatted, and how the client
code can use this to gather information about the stat.
Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Maryam Tahhan <maryam.tahhan@intel.com>
Create nics guide by moving chapters about Intel and Mellanox NICs.
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Siobhan Butler <siobhan.a.butler@intel.com>
The 1.7 DPDK_Prog_Guide document in MSWord has been converted to rst format for
use with Sphinx. There is an rst file for each chapter and an index.rst file
which contains the table of contents.
The top level index file has been modified to include this guide.
This document contains some png image files. If any of these png files are modified
they should be replaced with an svg file.
This is the sixth document from a set of 6 documents.
Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
