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add generic netlink functions to swig

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Provide wrapper function for generic netlink library functions. The
genlmsg_parse() function is handled similar to nla_parse_nested() so
it returns tuple with error code and dictionary of parsed attributes.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Arend van Spriel 2013-07-15 12:09:13 +02:00 • committed by Thomas Graf
parent 7dc033f5cc
commit 89b00119f2
1 changed files with 97 additions and 0 deletions
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97
python/netlink/genl/capi.i
View file

@ -9,3 +9,100 @@
%include <stdint.i>
%include <cstring.i>
/* #include <netlink/genl/ctrl.h> */
extern int genl_ctrl_alloc_cache(struct nl_sock *, struct nl_cache **o_cache);
extern struct genl_family *genl_ctrl_search(struct nl_cache *, int);
extern struct genl_family *genl_ctrl_search_by_name(struct nl_cache *,
const char *);
extern int genl_ctrl_resolve(struct nl_sock *, const char *);
extern int genl_ctrl_resolve_grp(struct nl_sock *sk, const char *family,
const char *grp);
/* #include <netlink/genl/family.h> */
extern struct genl_family *genl_family_alloc(void);
extern void genl_family_put(struct genl_family *);
extern unsigned int genl_family_get_id(struct genl_family *);
extern void genl_family_set_id(struct genl_family *, unsigned int);
extern char *genl_family_get_name(struct genl_family *);
extern void genl_family_set_name(struct genl_family *, const char *name);
extern uint8_t genl_family_get_version(struct genl_family *);
extern void genl_family_set_version(struct genl_family *, uint8_t);
extern uint32_t genl_family_get_hdrsize(struct genl_family *);
extern void genl_family_set_hdrsize(struct genl_family *, uint32_t);
extern uint32_t genl_family_get_maxattr(struct genl_family *);
extern void genl_family_set_maxattr(struct genl_family *, uint32_t);
extern int genl_family_add_op(struct genl_family *, int, int);
extern int genl_family_add_grp(struct genl_family *, uint32_t , const char *);
/* #include <netlink/genl/genl.h> */
extern int genl_connect(struct nl_sock *);
extern void *genlmsg_put(struct nl_msg *, uint32_t, uint32_t,
int, int, int, uint8_t, uint8_t);
struct nlattr {
};
struct nla_policy {
/** Type of attribute or NLA_UNSPEC */
uint16_t type;
/** Minimal length of payload required */
uint16_t minlen;
/** Maximal length of payload allowed */
uint16_t maxlen;
};
%inline %{
PyObject *py_genlmsg_parse(struct nlmsghdr *nlh, int uhl, int max,
PyObject *p)
{
struct nlattr *tb_msg[max + 1];
struct nla_policy *policy = NULL;
void *pol;
PyObject *attrs = Py_None;
PyObject *k;
PyObject *v;
PyObject *resobj;
int err;
int i;
if (p != Py_None) {
PyObject *pobj;
if (!PyList_Check(p)) {
fprintf(stderr, "expected list object\n");
err = -1;
goto fail;
}
pobj = PyList_GetItem(p, 0);
err = SWIG_ConvertPtr(pobj, &pol, SWIGTYPE_p_nla_policy, 0 | 0 );
if (!SWIG_IsOK(err))
goto fail;
policy = pol;
}
err = genlmsg_parse(nlh, uhl, tb_msg, max, policy);
if (err < 0) {
fprintf(stderr, "Failed to parse response message\n");
} else {
attrs = PyDict_New();
for (i = 0; i <= max; i++)
if (tb_msg[i]) {
k = PyInt_FromLong((long)i);
v = SWIG_NewPointerObj(SWIG_as_voidptr(tb_msg[i]), SWIGTYPE_p_nlattr, 0 | 0 );
PyDict_SetItem(attrs, k, v);
}
}
fail:
if (attrs == Py_None)
Py_INCREF(Py_None);
resobj = Py_BuildValue("(iO)", err, attrs);
return resobj;
}
%}
/* #include <netlink/genl/mngt.h> */
/* nothing yet */