diff options
Diffstat (limited to 'src/attr.c')
| -rw-r--r-- | src/attr.c | 35 |
1 files changed, 34 insertions, 1 deletions
@@ -1,5 +1,5 @@ /* - * (C) 2008-2010 by Pablo Neira Ayuso <pablo@netfilter.org> + * (C) 2008-2012 by Pablo Neira Ayuso <pablo@netfilter.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published @@ -304,6 +304,39 @@ mnl_attr_parse_nested(const struct nlattr *nested, mnl_attr_cb_t cb, EXPORT_SYMBOL(mnl_attr_parse_nested); /** + * mnl_attr_parse_payload - parse attributes in payload of Netlink message + * \param payload pointer to payload of the Netlink message + * \param payload_len payload length that contains the attributes + * \param cb callback function that is called for each attribute + * \param data pointer to data that is passed to the callback function + * + * This function takes a pointer to the area that contains the attributes, + * commonly known as the payload of the Netlink message. Thus, you have to + * pass a pointer to the Netlink message payload, instead of the entire + * message. + * + * This function allows you to iterate over the sequence of attributes that are + * located at some payload offset. You can then put the attributes in one array + * as usual, or you can use any other data structure (such as lists or trees). + * + * This function propagates the return value of the callback, which can be + * MNL_CB_ERROR, MNL_CB_OK or MNL_CB_STOP. + */ +int +mnl_attr_parse_payload(const void *payload, size_t payload_len, + mnl_attr_cb_t cb, void *data) +{ + int ret = MNL_CB_OK; + const struct nlattr *attr; + + mnl_attr_for_each_payload(payload, payload_len) + if ((ret = cb(attr, data)) <= MNL_CB_STOP) + return ret; + return ret; +} +EXPORT_SYMBOL(mnl_attr_parse_payload); + +/** * mnl_attr_get_u8 - returns 8-bit unsigned integer attribute payload * \param attr pointer to netlink attribute * |