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wiphy: Remove wiphy_parse_id_and_name

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in favor of using nl80211_parse_attrs
This commit is contained in:
Denis Kenzior 2019-09-19 22:54:07 -05:00
parent bf7e62fafb
commit 91784425ec
4 changed files with 21 additions and 93 deletions
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10
src/manager.c
View File

@ -330,17 +330,15 @@ static struct wiphy_setup_state *manager_rx_cmd_new_wiphy(
{
struct wiphy_setup_state *state = NULL;
struct wiphy *wiphy;
struct l_genl_attr attr;
uint32_t id;
const char *name;
const char *driver, **driver_bad;
bool use_default;
const struct l_settings *settings = iwd_get_config();
if (!l_genl_attr_init(&attr, msg))
return NULL;
if (!wiphy_parse_id_and_name(&attr, &id, &name))
if (nl80211_parse_attrs(msg, NL80211_ATTR_WIPHY, &id,
NL80211_ATTR_WIPHY_NAME, &name,
NL80211_ATTR_UNSPEC) < 0)
return NULL;
/*
@ -386,7 +384,7 @@ static struct wiphy_setup_state *manager_rx_cmd_new_wiphy(
l_info("Wiphy %s will only use the default interface", name);
done:
wiphy_update_from_genl(wiphy, msg);
wiphy_update_from_genl(wiphy, name, msg);
return state;
}

1
src/nl80211util.c
View File

@ -96,6 +96,7 @@ static attr_handler handler_for_type(enum nl80211_attrs type)
case NL80211_ATTR_WDEV:
return extract_uint64;
case NL80211_ATTR_IFNAME:
case NL80211_ATTR_WIPHY_NAME:
return extract_name;
default:
break;

97
src/wiphy.c
View File

@ -49,6 +49,7 @@
#include "src/util.h"
#include "src/common.h"
#include "src/watchlist.h"
#include "src/nl80211util.h"
#define EXT_CAP_LEN 10
@ -703,13 +704,17 @@ static void parse_iftype_extended_capabilities(struct wiphy *wiphy,
}
static void wiphy_parse_attributes(struct wiphy *wiphy,
struct l_genl_attr *attr)
struct l_genl_msg *msg)
{
struct l_genl_attr attr;
struct l_genl_attr nested;
uint16_t type, len;
const void *data;
while (l_genl_attr_next(attr, &type, &len, &data)) {
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_FEATURE_FLAGS:
if (len != sizeof(uint32_t))
@ -725,7 +730,7 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
memcpy(wiphy->ext_features, data, len);
break;
case NL80211_ATTR_SUPPORTED_COMMANDS:
if (l_genl_attr_recurse(attr, &nested))
if (l_genl_attr_recurse(&attr, &nested))
parse_supported_commands(wiphy, &nested);
break;
@ -733,7 +738,7 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
parse_supported_ciphers(wiphy, data, len);
break;
case NL80211_ATTR_WIPHY_BANDS:
if (l_genl_attr_recurse(attr, &nested))
if (l_genl_attr_recurse(&attr, &nested))
parse_supported_bands(wiphy, &nested);
break;
@ -748,7 +753,7 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
wiphy->support_adhoc_rsn = true;
break;
case NL80211_ATTR_SUPPORTED_IFTYPES:
if (l_genl_attr_recurse(attr, &nested))
if (l_genl_attr_recurse(&attr, &nested))
parse_supported_iftypes(wiphy, &nested);
break;
case NL80211_ATTR_OFFCHANNEL_TX_OK:
@ -759,7 +764,7 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
data, minsize(EXT_CAP_LEN, len));
break;
case NL80211_ATTR_IFTYPE_EXT_CAPA:
if (!l_genl_attr_recurse(attr, &nested))
if (!l_genl_attr_recurse(&attr, &nested))
break;
parse_iftype_extended_capabilities(wiphy, &nested);
@ -768,68 +773,6 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
}
}
bool wiphy_parse_id_and_name(struct l_genl_attr *attr, uint32_t *out_id,
const char **out_name)
{
uint16_t type, len;
const void *data;
uint32_t id;
const char *name;
/*
* The wiphy attribute, name and generation are always the first
* three attributes (in that order) in every NEW_WIPHY & DEL_WIPHY
* message. If not, then error out with a warning and ignore the
* whole message.
*/
if (!l_genl_attr_next(attr, &type, &len, &data))
return false;
if (type != NL80211_ATTR_WIPHY)
return false;
if (len != sizeof(uint32_t))
return false;
id = *((uint32_t *) data);
if (!l_genl_attr_next(attr, &type, &len, &data))
return false;
if (type != NL80211_ATTR_WIPHY_NAME)
return false;
if (len > sizeof(((struct wiphy *) 0)->name))
return false;
name = data;
if (len < 1 || !memchr(name + 1, 0, len - 1))
return false;
if (!l_genl_attr_next(attr, &type, &len, &data))
return false;
if (type != NL80211_ATTR_GENERATION)
return false;
if (len != sizeof(uint32_t))
return false;
/*
* TODO: Handle GENERATION. In theory if we detect a changed generation
* number during a dump, it means that our dump needs to be re-started
*/
if (out_id)
*out_id = id;
if (out_name)
*out_name = name;
return true;
}
static bool wiphy_get_driver_name(struct wiphy *wiphy)
{
L_AUTO_FREE_VAR(char *, driver_link) = NULL;
@ -942,23 +885,11 @@ struct wiphy *wiphy_create(uint32_t wiphy_id, const char *name)
return wiphy;
}
void wiphy_update_from_genl(struct wiphy *wiphy, struct l_genl_msg *msg)
void wiphy_update_from_genl(struct wiphy *wiphy, const char *name,
struct l_genl_msg *msg)
{
struct l_genl_attr attr;
const char *name;
l_debug("");
if (!l_genl_attr_init(&attr, msg))
return;
if (!wiphy_parse_id_and_name(&attr, NULL, &name))
return;
/*
* WIPHY_NAME is a NLA_NUL_STRING, so the kernel
* enforces the data to be null terminated.
*/
if (strncmp(wiphy->name, name, sizeof(wiphy->name))) {
struct l_dbus *dbus = dbus_get_bus();
@ -967,7 +898,7 @@ void wiphy_update_from_genl(struct wiphy *wiphy, struct l_genl_msg *msg)
IWD_WIPHY_INTERFACE, "Name");
}
wiphy_parse_attributes(wiphy, &attr);
wiphy_parse_attributes(wiphy, msg);
}
static void wiphy_set_station_capability_bits(struct wiphy *wiphy)

6
src/wiphy.h
View File

@ -43,15 +43,13 @@ enum ie_rsn_akm_suite wiphy_select_akm(struct wiphy *wiphy,
struct scan_bss *bss,
bool fils_capable_hint);
bool wiphy_parse_id_and_name(struct l_genl_attr *attr, uint32_t *out_id,
const char **out_name);
struct wiphy *wiphy_find(int wiphy_id);
struct wiphy *wiphy_create(uint32_t wiphy_id, const char *name);
void wiphy_create_complete(struct wiphy *wiphy);
bool wiphy_destroy(struct wiphy *wiphy);
void wiphy_update_from_genl(struct wiphy *wiphy, struct l_genl_msg *msg);
void wiphy_update_from_genl(struct wiphy *wiphy, const char *name,
struct l_genl_msg *msg);
bool wiphy_constrain_freq_set(const struct wiphy *wiphy,
struct scan_freq_set *set);