With symbols going though experimental/stable stages, we accumulated
a lot of discrepancies about inclusion of the rte_compat.h header.
Some headers are including it where unneeded, while others rely on
implicit inclusion.
Fix unneeded inclusions:
$ git grep -l include..rte_compat.h |
xargs grep -LE '__rte_(internal|experimental)' |
xargs sed -i -e '/#include..rte_compat.h/d'
Fix missing inclusion, by inserting rte_compat.h before the first
inclusion of a DPDK header:
$ git grep -lE '__rte_(internal|experimental)' |
xargs grep -L include..rte_compat.h |
xargs sed -i -e \
'0,/#include..\(rte_\|.*pmd.h.$\)/{
s/\(#include..\(rte_\|.*pmd.h.$\)\)/#include <rte_compat.h>\n\1/
}'
Fix missing inclusion, by inserting rte_compat.h after the last
inclusion of a non DPDK header:
$ for file in $(git grep -lE '__rte_(internal|experimental)' |
xargs grep -L include..rte_compat.h); do
tac $file > $file.$$
sed -i -e \
'0,/#include../{
s/\(#include..*$\)/#include <rte_compat.h>\n\n\1/
}' $file.$$
tac $file.$$ > $file
rm $file.$$
done
Fix missing inclusion, by inserting rte_compat.h after the header guard:
$ git grep -lE '__rte_(internal|experimental)' |
xargs grep -L include..rte_compat.h |
xargs sed -i -e \
'0,/#define/{
s/\(#define .*$\)/\1\n\n#include <rte_compat.h>/
}'
And finally, exclude rte_compat.h itself.
$ git checkout lib/eal/include/rte_compat.h
At the end of all this, we have a clean tree:
$ git grep -lE '__rte_(internal|experimental)' |
xargs grep -L include..rte_compat.h
buildtools/check-symbols.sh
devtools/checkpatches.sh
doc/guides/contributing/abi_policy.rst
doc/guides/rel_notes/release_20_11.rst
lib/eal/include/rte_compat.h
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
__rte_raw_cksum() (used by rte_raw_cksum() among others) accessed its
data through an uint16_t pointer, which allowed the compiler to assume
the data was 16-bit aligned. This in turn would, with certain
architectures and compiler flag combinations, result in code with SIMD
load or store instructions with restrictions on data alignment.
This patch keeps the old algorithm, but data is read using memcpy()
instead of direct pointer access, forcing the compiler to always
generate code that handles unaligned input. The __may_alias__ GCC
attribute is no longer needed.
The data on which the Internet checksum functions operates are almost
always 16-bit aligned, but there are exceptions. In particular, the
PDCP protocol header may (literally) have an odd size.
Performance impact seems to range from none to a very slight
regression.
Bugzilla ID: 1035
Fixes: 6006818cfb ("net: new checksum functions")
Cc: stable@dpdk.org
Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
According to RFC791,the options may appear or not in datagrams.
They must be implemented by all IP modules (host and gateways).
What is optional is their transmission in any particular datagram,
not their implementation. So we have to deal with it during the
fragmenting process.
Add some test data for the IPv4 header optional field fragmenting.
Signed-off-by: Huichao Cai <chcchc88@163.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Add functions to call rte_raw_cksum_mbuf() to calculate IPv4/6
UDP/TCP checksum in mbuf which can be over multi-segments.
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Aman Singh <aman.deep.singh@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Sunil Pai G <sunil.pai.g@intel.com>
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>
That means a superfluous cast is removed and aliasing through a uint8_t
pointer is eliminated. NB: The C standard specifies that a unsigned char
pointer may alias while the C standard doesn't include such requirement
for uint8_t pointers.
Also simplified the loop since a modern C compiler can speed up (i.e.
auto-vectorize) it in a similar way. For example, GCC auto-vectorizes it
for Haswell using AVX registers while halving the number of instructions
in the generated code.
Fixes: 6006818cfb ("net: new checksum functions")
Fixes: e079655c41 ("net: fix build with gcc 4.4.7 and strict aliasing")
Cc: stable@dpdk.org
Signed-off-by: Georg Sauthoff <mail@gms.tf>
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
RTE IPv4 header definition combines the `version' and `ihl' fields
into a single structure member.
This patch introduces dedicated structure members for both `version'
and `ihl' IPv4 fields. Separated header fields definitions allow to
create simplified code to match on the IHL value in a flow rule.
The original `version_ihl' structure member is kept for backward
compatibility.
Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Remove the netinet includes and replaces them
with rte_ip.h to support the in_addr/in6_addr structs
on all operating systems.
Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
Acked-by: William Tu <u9012063@gmail.com>
Since commit d5df2ae042 ("net: fix unneeded replacement of TCP
checksum 0"), the functions rte_ipv4_udptcp_cksum() and
rte_ipv6_udptcp_cksum() can return either 0x0000 or 0xffff when used to
verify a packet containing a valid checksum.
Since these functions should be used to calculate the checksum to set in
a packet, introduce 2 new helpers for checksum verification. They return
0 if the checksum is valid in the packet.
Use this new helper in net/tap driver.
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Spotted by sparse in OVS build:
../../lib/netdev-dpdk.c: note: in included file (through
/home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_ip.h,
/home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h, ...):
../../include/sparse/arpa/inet.h:22:2: error: "Must include
<netinet/in.h> before <arpa/inet.h> for FreeBSD support"
This is a check enforced by OVS itself.
See [1] for some context.
1: https://github.com/openvswitch/ovs/commit/b2befd5bb2db
Fixes: 89813a522e ("net: provide IP-related API on any OS")
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
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>
