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nl80211: Add nl80211_*_msg() helpers

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These new functions can be used to both allocate and build a header for
most nl80211 commands.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-12-06 12:56:05 +02:00
parent a862e4a38f
commit 07c7757cb1
2 changed files with 55 additions and 0 deletions
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51
src/drivers/driver_nl80211.c
View file

@ -439,6 +439,57 @@ void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
} }
struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
{
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return NULL;
if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
nl80211_set_iface_id(msg, bss) < 0) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
static struct nl_msg *
nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
int flags, uint8_t cmd)
{
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return NULL;
if (!nl80211_cmd(drv, msg, flags, cmd) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
uint8_t cmd)
{
return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
}
struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
{
return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
}
struct wiphy_idx_data { struct wiphy_idx_data {
int wiphy_idx; int wiphy_idx;
enum nl80211_iftype nlmode; enum nl80211_iftype nlmode;

4
src/drivers/driver_nl80211.h
View file

@ -186,6 +186,10 @@ struct nl_msg;
int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss); int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss);
void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg, int flags, uint8_t cmd); struct nl_msg *msg, int flags, uint8_t cmd);
struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd);
struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
uint8_t cmd);
struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd);
int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, struct nl_msg *msg, int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *), int (*valid_handler)(struct nl_msg *, void *),
void *valid_data); void *valid_data);