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https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-22 06:29:23 +01:00
nl80211util: refactor nl80211_parse_attrs for nested variant
To prep for adding a _nested() variant of this function refactor this to act on an l_genl_attr object rather than the message itself. In addition a handler specific to the attribute being parsed is now passed in, with the current "handler_for_type" being renamed to "handler_for_nl80211" that corresponds to root level attributes.
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1dda441b85
commit
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@ -37,6 +37,7 @@
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#include "src/util.h"
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typedef bool (*attr_handler)(const void *data, uint16_t len, void *o);
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typedef attr_handler (*handler_for_type)(int type);
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static bool extract_ifindex(const void *data, uint16_t len, void *o)
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{
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@ -150,7 +151,7 @@ static bool extract_u8(const void *data, uint16_t len, void *o)
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return true;
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}
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static attr_handler handler_for_type(enum nl80211_attrs type)
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static attr_handler handler_for_nl80211(int type)
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{
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switch (type) {
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case NL80211_ATTR_IFINDEX:
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@ -199,10 +200,9 @@ struct attr_entry {
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bool present : 1;
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};
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int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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static int parse_attrs(struct l_genl_attr *attr, handler_for_type handler,
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int tag, va_list args)
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{
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struct l_genl_attr attr;
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va_list args;
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struct l_queue *entries;
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const struct l_queue_entry *e;
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struct attr_entry *entry;
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@ -211,10 +211,6 @@ int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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const void *data;
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int ret;
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if (!l_genl_attr_init(&attr, msg))
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return -EINVAL;
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va_start(args, tag);
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entries = l_queue_new();
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ret = -ENOSYS;
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@ -223,7 +219,7 @@ int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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entry->type = tag;
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entry->data = va_arg(args, void *);
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entry->handler = handler_for_type(tag);
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entry->handler = handler(tag);
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l_queue_push_tail(entries, entry);
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if (!entry->handler)
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@ -232,9 +228,7 @@ int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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tag = va_arg(args, enum nl80211_attrs);
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}
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va_end(args);
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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while (l_genl_attr_next(attr, &type, &len, &data)) {
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for (e = l_queue_get_entries(entries); e; e = e->next) {
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entry = e->data;
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@ -252,7 +246,7 @@ int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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/* For nested attributes use the outer attribute as data */
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if (entry->handler == extract_nested)
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data = &attr;
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data = attr;
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if (!entry->handler(data, len, entry->data)) {
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ret = -EINVAL;
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@ -285,6 +279,24 @@ done:
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return ret;
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}
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int nl80211_parse_attrs(struct l_genl_msg *msg, int tag, ...)
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{
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struct l_genl_attr attr;
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va_list args;
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int ret;
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if (!l_genl_attr_init(&attr, msg))
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return -EINVAL;
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va_start(args, tag);
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ret = parse_attrs(&attr, handler_for_nl80211, tag, args);
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va_end(args);
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return ret;
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}
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struct l_genl_msg *nl80211_build_deauthenticate(uint32_t ifindex,
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const uint8_t addr[static 6],
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uint16_t reason_code)
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