use C linkage where appropriate in headers

Assure that 'extern "C" { /../ }' do not cover files included from a
particular header file, and address minor issues resulting from this
change of order.

use C linkage where appropriate in headers

Assure that 'extern "C" { /../ }' do not cover files included from a
particular header file, and address minor issues resulting from this
change of order.

Dealing with C++ should delegate to the individual include file level,
rather than being imposed by the user of that file. For example,
forcing C linkage prevents __Generic macros being replaced with
overloaded static inline functions in C++ translation units.

Eliminate 'extern "C"' from files which do not declare any symbols
(e.g., only macros or struct types).

On the other hand, the headers check is too naive in assuming that all
headers must contain a 'extern "C"'. Such a check was added in commit
1ee492bdc4ff ("buildtools/chkincs: check missing C++ guards").
Since this current change results in many headers not containing such
a token, remove the check for 'extern "C"' until we have a better
implementation.

Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>

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net: clear outer UDP checksum in Intel prepare helper

If requesting an inner (L3/L4 checksum or L4 segmentation) offload,
when the hardware does not support recomputing outer UDP checksum,
automatic

net: clear outer UDP checksum in Intel prepare helper

If requesting an inner (L3/L4 checksum or L4 segmentation) offload,
when the hardware does not support recomputing outer UDP checksum,
automatically disable it in the common helper.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Tested-by: Ali Alnubani <alialnu@nvidia.com>

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net: fix outer UDP checksum in Intel prepare helper

Setting a pseudo header checksum in the outer UDP checksum is a Intel
(and some other vendors) requirement.
Applications (like OVS) requesting out

net: fix outer UDP checksum in Intel prepare helper

Setting a pseudo header checksum in the outer UDP checksum is a Intel
(and some other vendors) requirement.
Applications (like OVS) requesting outer UDP checksum without doing this
extra setup have broken outer UDP checksums.

Move this specific setup from testpmd to the "common" helper
rte_net_intel_cksum_flags_prepare().

net/hns3 can then be adjusted.

Bugzilla ID: 1406
Fixes: d8e5e69f3a9b ("app/testpmd: add GTP parsing and Tx checksum offload")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Tested-by: Ali Alnubani <alialnu@nvidia.com>

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net: calculate correct UDP pseudo header for UFO

This commit calculates the correct pseudo header for the
UDP fragmentation offload by adding UDP_SEG flag.

Signed-off-by: Zhichao Zeng <zhichaox.zen

net: calculate correct UDP pseudo header for UFO

This commit calculates the correct pseudo header for the
UDP fragmentation offload by adding UDP_SEG flag.

Signed-off-by: Zhichao Zeng <zhichaox.zeng@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

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net: remove unneeded header includes

These header includes have been flagged by the iwyu_tool
and removed.

Signed-off-by: Sean Morrissey <sean.morrissey@intel.com>

mbuf: add namespace to offload flags

Fix the mbuf offload flags namespace by adding an RTE_ prefix to the
name. The old flags remain usable, but a deprecation warning is issued
at compilation.

Sign

mbuf: add namespace to offload flags

Fix the mbuf offload flags namespace by adding an RTE_ prefix to the
name. The old flags remain usable, but a deprecation warning is issued
at compilation.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Acked-by: Somnath Kotur <somnath.kotur@broadcom.com>

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net: promote IPv6 external headers skip API as stable

This function is public since commit 8f0e4d6a78a5 ("net: export IPv6
header extensions skip function") (2018), and is used by vmxnet3 driver.
Pr

net: promote IPv6 external headers skip API as stable

This function is public since commit 8f0e4d6a78a5 ("net: export IPv6
header extensions skip function") (2018), and is used by vmxnet3 driver.
Promote it as stable.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: David Marchand <david.marchand@redhat.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>

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net: fix checksum offload for outer IPv4

Preparation of the headers for the hardware offload
misses the outer IPv4 checksum offload.
It results in bad checksum computed by hardware NIC.

This patch

net: fix checksum offload for outer IPv4

Preparation of the headers for the hardware offload
misses the outer IPv4 checksum offload.
It results in bad checksum computed by hardware NIC.

This patch fixes the issue by setting the outer IPv4
checksum field to 0.

Fixes: 4fb7e803eb1a ("ethdev: add Tx preparation")
Cc: stable@dpdk.org

Signed-off-by: Mohsin Kazmi <mohsin.kazmi14@gmail.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

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lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
m

lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
makes it awkward to add features referring to individual libraries in the
build - should the lib names be specified with or without the prefix.
Therefore, we can just remove the library prefix and use the library's
unique name as the directory name, i.e. 'eal' rather than 'librte_eal'

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

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