Commit Graph

30 Commits

Author SHA1 Message Date
Thomas Monjalon
cc0579f233 kvargs: support list value
If a value contains a comma, rte_kvargs_tokenize() will split here.
In order to support list syntax [a,b] as value, an extra parsing of
the square brackets is added.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2018-10-26 22:14:06 +02:00
Thomas Monjalon
25495407cb kvargs: fix processing a null list
In the doxygen description of rte_kvargs_process(), it is said:
	If *kvlist* is NULL function does nothing.
It has been added by mistake here instead of rte_kvargs_free().
Anyway, null list should be correctly handled in both functions.

Comments are fixed in both functions and NULL handling is added
to rte_kvargs_process().

Fixes: c34af7424e ("kvargs: fix freeing behaviour for null")
Cc: stable@dpdk.org

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2018-10-24 15:06:46 +02:00
Bruce Richardson
ecea301994 kvargs: fix building with meson outside source tree
When building DPDK with meson with the <builddir> being outside the source
directory, an error was generated as the path to the EAL headers was not
found. The path specified for the includes backed out unnecessarily far and
so broke when the build directory was not in the expected location of
just inside the source dir. Changing the path to be shorter, just going
down one level and then into EAL builds for both cases - where builddir is
in source directory, and also when it's outside it.

Fixes: 092ee51649 ("kvargs: build before EAL")

Reported-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Anatoly Burakov <anatoly.burakov@intel.com>
2018-07-26 10:14:06 +02:00
Gaetan Rivet
a3b85476c5 kvargs: add generic string matching callback
This function can be used as a callback to
rte_kvargs_process.

This should reduce code duplication.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
2018-07-15 23:44:22 +02:00
Gaetan Rivet
5d6af85ab0 kvargs: introduce a more flexible parsing function
This function permits defining additional terminating characters,
ending the parsing to arbitrary delimiters.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
2018-07-15 23:42:22 +02:00
Gaetan Rivet
092ee51649 kvargs: build before EAL
This library will be used by the EAL to parse parameters.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
2018-07-15 23:42:16 +02:00
Gaetan Rivet
12a020ea19 kvargs: remove error logs
Error logs in kvargs parsing should be better handled in components
calling the library.

This library must be as lean as possible.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
2018-07-15 23:42:13 +02:00
Olivier Matz
f83a3d3fa8 use SPDX tag for 6WIND copyrighted files
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2018-05-25 10:47:06 +02:00
Keith Wiles
2a5002362d kvargs: fix syntax in comments
Use commas as separator, not semicolons.

Fixes: a8b97e3a1d ("devargs: use a comma instead of semicolon to separate key/values")
Cc: stable@dpdk.org

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2018-03-28 00:43:22 +02:00
Olivier Matz
b2400a53e6 kvargs: use SPDX tags
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
2018-02-01 02:27:22 +01:00
Bruce Richardson
6c9457c279 build: replace license text with SPDX tag
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Luca Boccassi <bluca@debian.org>
2018-01-30 21:58:59 +01:00
Bruce Richardson
5b9656b157 lib: build with meson
Add non-EAL libraries to DPDK build. The compat lib is a special case,
along with the previously-added EAL, but all other libs can be build using
the same set of commands, where the individual meson.build files only need
to specify their dependencies, source files, header files and ABI versions.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
Acked-by: Luca Boccassi <luca.boccassi@gmail.com>
2018-01-30 17:49:16 +01:00
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
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
Bruce Richardson
0615355ffa kvargs: make pointers in string arrays const
Change the parameters of functions from const char *valid[] to
const char * const valid[]. This additional const is needed to
allow us to fix some checkpatch warnings, as well as being good
programming practice.

For the checkpatch warnings, if we have a set of command line
args that we want to check defined as:
	static const char *args[] = { "arg1", "arg2", NULL };
	kvlist = rte_kvargs_parse(params, args);

checkpatch will complain:
	WARNING:STATIC_CONST_CHAR_ARRAY: static const char *
	array should probably be static const char * const

Adding the additional const to the definition of the args
will then trigger a compiler error in the absence of this
change to the kvargs library, as we lose the const in the
call to kvargs_parse.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-01-13 19:28:26 +01:00
David Marchand
c7985de0a7 remove unneeded tests for NULL when freeing
free() already handles NULL pointer.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-01-27 15:34:48 +01:00
Pawel Wodkowski
c34af7424e kvargs: fix freeing behaviour for null
By convention free() functions should ignore NULL parameter. This patch
add this behaviour for rte_kvargs_free().

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2015-03-04 11:19:37 +01:00
Neil Horman
133b75923b mk: add library version extension
To differentiate libraries that break ABI, we add a library version number
suffix to the library, which must be incremented when a given libraries ABI is
broken.  This patch enforces that addition, sets the initial abi soname
extension to 1 for each library and creates a symlink to the base SONAME so that
the test applications will link properly.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-02-03 16:56:58 +01:00
Neil Horman
9d41beed24 lib: provide initial versioning
Add linker version script files to each DPDK library to put a stake in the
ground from which we can start cleaning up API's

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2015-02-03 16:56:58 +01:00
Min Cao
1122f06c42 kvargs: fix build with gcc 4.5.1
GCC 4.5.1 warns about an uninitialized pointer:
	error: 'ctx1' may be used uninitialized in this function

Signed-off-by: Min Cao <min.cao@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>
Tested-by: Waterman Cao <waterman.cao@intel.com>
2014-06-17 19:01:59 +02:00
Olivier Matz
a8b97e3a1d devargs: use a comma instead of semicolon to separate key/values
This commit changes the API of --use-device command line argument.
It changes the separators from ';' to ','. Indeed, ';' is not the best
choice as this character is also used to separate shell commands,
forcing the user to surround arguments with quotes.

This commit impacts both devargs and kvargs as each of them define
a separator in --use-device argument:

- devargs defines the separator between the device name or pci_id and
   its arguments
- kvargs defines the separator between each key/value pairs in
   arguments for drivers using the kvargs API to parse their arguments

The modification of devargs and kvargs is done in one commit to keep
the coherency of --use-device.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2014-04-10 15:50:11 +02:00
Olivier Matz
38a901702f kvargs: make the NULL key to match all entries
In rte_kvargs_process() and rte_kvargs_count(), if the key_match
argument is NULL, process all entries.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
95418a30be kvargs: add the key in handler pameters
This argument can be useful when rte_kvargs_process() is called with
key=NULL, in this case the handler is invoked for all entries of the
kvlist.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
d8e2337ac4 kvargs: add const attribute in handler parameters
The "value" argument is read-only and should be const.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
d24839b318 kvargs: be strict when matching a key
When we match a key in is_valid_key() and rte_kvargs_process(), do a
strict comparison (strcmp()) instead of using strstr(s1, s2) which tries
a find s1 in s2. This old behavior could lead to unexpected match, for
instance "cola" match "chocolate".

Surprisingly, no patch was needed on rte_kvargs_count() as it already
used strcmp().

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
ac15c81315 kvargs: simpler parsing and allow duplicated keys
Remove the rte_kvargs_add_pair() function whose only role was to check
if a key is duplicated. Having duplicated keys is now allowed by kvargs
API.

Also replace rte_strsplit() by more a standard function strtok_r() that
is easier to understand for people already knowing the libc. It also
avoids useless calls to strnlen(). The delimiters macros become strings
instead of chars due to the strtok_r() API.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
ef8e5447e3 kvargs: rework API to fix memory leak
Before the patch, a call to rte_kvargs_tokenize() resulted in a call to
strdup() to allocate a modifiable copy of the argument string. This
string was never freed, excepted in the error cases of
rte_kvargs_tokenize() where rte_free() was wrongly called instead of
free(). In other cases, freeing this string was impossible as the
pointer not saved.

This patch introduces rte_kvargs_free() in order to free the structure
properly. The pointer to the duplicated string is now kept in the
rte_kvargs structure. A call to rte_kvargs_parse() directly allocates
the structure, making rte_kvargs_init() useless.

The only drawback of this API change is that a key/value associations
cannot be added to an existing kvlist. But it's not used today, and
there is not obvious use case for that.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
03b611b713 kvargs: remove useless size field
This value was not very useful as the size of the table is fixed (equals
RTE_KVARGS_MAX).

By the way, the memset in the initialization function was wrong (size
too short). Even if it was not really an issue since we rely on the
"count" field, it is now fixed by this patch.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
991543e815 kvargs: remove driver name in arguments
Now that rte_kvargs is a generic library, there is no need to have an argument
for the driver name in rte_kvargs_tokenize() and rte_kvargs_parse()
prototypes. This argument was only used to log the driver name in case of
error. Instead, we can add a log in init function of pmd_pcap and pmd_ring.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:14 +01:00
Olivier Matz
e1a00536c8 kvargs: add a new library to parse key/value arguments
Copy the code from rte_eth_pcap_arg_parser.[ch], without any functional
modifications, only:
- rename functions and structure
- restyle (indentation)
- add comments (doxygen style)
- add "const" or "static" attributes, remove unneeded "inline"

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-26 11:01:13 +01:00