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