[PATCH V2 03/23] nl80211: Hold wdev identification for P2P Device
Arend van Spriel
arend at broadcom.com
Wed May 29 05:07:50 EDT 2013
From: David Spinadel <david.spinadel at intel.com>
Add wdev_id to i802_bss. wdev_id_set indicates whether this id is
available. Use wdev_id if assigned, instead of ifindex. Use wdev_id for
events that come from the kernel to identify the relevant interface.
This commit does not assign wdev_id value for the BSS yet, i.e., this is
only preparation for the value to be used in a future commit.
Signed-off-by: David Spinadel <david.spinadel at intel.com>
---
src/drivers/driver_nl80211.c | 86 ++++++++++++++++++++++++++++++++----------
1 file changed, 67 insertions(+), 19 deletions(-)
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 510ed59..95f486e 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -183,12 +183,14 @@ struct i802_bss {
struct wpa_driver_nl80211_data *drv;
struct i802_bss *next;
int ifindex;
+ u64 wdev_id;
char ifname[IFNAMSIZ + 1];
char brname[IFNAMSIZ];
unsigned int beacon_set:1;
unsigned int added_if_into_bridge:1;
unsigned int added_bridge:1;
unsigned int in_deinit:1;
+ unsigned int wdev_id_set:1;
u8 addr[ETH_ALEN];
@@ -476,6 +478,19 @@ struct family_data {
};
+static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
+{
+ if (bss->wdev_id_set)
+ NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
+ else
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
+ return 0;
+
+nla_put_failure:
+ return -1;
+}
+
+
static int family_handler(struct nl_msg *msg, void *arg)
{
struct family_data *res = arg;
@@ -2469,19 +2484,30 @@ static int process_drv_event(struct nl_msg *msg, void *arg)
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
- if (tb[NL80211_ATTR_IFINDEX])
+ if (tb[NL80211_ATTR_IFINDEX]) {
ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
- for (bss = &drv->first_bss; bss; bss = bss->next) {
- if (ifidx == -1 || ifidx == bss->ifindex) {
- do_process_drv_event(bss, gnlh->cmd, tb);
- return NL_SKIP;
- }
+ for (bss = &drv->first_bss; bss; bss = bss->next)
+ if (ifidx == -1 || ifidx == bss->ifindex) {
+ do_process_drv_event(bss, gnlh->cmd, tb);
+ return NL_SKIP;
+ }
+ wpa_printf(MSG_DEBUG,
+ "nl80211: Ignored event (cmd=%d) for foreign interface (ifindex %d)",
+ gnlh->cmd, ifidx);
+ } else if (tb[NL80211_ATTR_WDEV]) {
+ u64 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
+ wpa_printf(MSG_DEBUG, "process event on p2p device");
+ for (bss = &drv->first_bss; bss; bss = bss->next)
+ if (bss->wdev_id_set && wdev_id == bss->wdev_id) {
+ do_process_drv_event(bss, gnlh->cmd, tb);
+ return NL_SKIP;
+ }
+ wpa_printf(MSG_DEBUG,
+ "nl80211: Ignored event (cmd=%d) for foreign interface (wdev 0x%llx)",
+ gnlh->cmd, (long long unsigned int) wdev_id);
}
- wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign "
- "interface (ifindex %d)", gnlh->cmd, ifidx);
-
return NL_SKIP;
}
@@ -2494,17 +2520,26 @@ static int process_global_event(struct nl_msg *msg, void *arg)
struct wpa_driver_nl80211_data *drv, *tmp;
int ifidx = -1;
struct i802_bss *bss;
+ u64 wdev_id;
+ int wdev_id_set = 0;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_IFINDEX])
ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
+ else if (tb[NL80211_ATTR_WDEV]) {
+ wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
+ wdev_id_set = 1;
+ }
dl_list_for_each_safe(drv, tmp, &global->interfaces,
struct wpa_driver_nl80211_data, list) {
for (bss = &drv->first_bss; bss; bss = bss->next) {
- if (ifidx == -1 || ifidx == bss->ifindex) {
+ if ((ifidx == -1 && !wdev_id_set) ||
+ ifidx == bss->ifindex ||
+ (wdev_id_set && bss->wdev_id_set &&
+ wdev_id == bss->wdev_id)) {
do_process_drv_event(bss, gnlh->cmd, tb);
return NL_SKIP;
}
@@ -3471,7 +3506,9 @@ static int nl80211_register_frame(struct i802_bss *bss,
nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
+ if (nl80211_set_iface_id(msg, bss))
+ goto nla_put_failure;
+
NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
@@ -3891,7 +3928,7 @@ static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
static struct nl_msg *
nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
- struct wpa_driver_scan_params *params)
+ struct wpa_driver_scan_params *params, u64 *wdev_id)
{
struct nl_msg *msg;
size_t i;
@@ -3902,8 +3939,10 @@ nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
nl80211_cmd(drv, msg, 0, cmd);
- if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0)
- goto fail;
+ if (!wdev_id)
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ else
+ NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
if (params->num_ssids) {
struct nlattr *ssids;
@@ -3952,6 +3991,7 @@ nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
return msg;
fail:
+nla_put_failure:
nlmsg_free(msg);
return NULL;
}
@@ -3973,7 +4013,8 @@ static int wpa_driver_nl80211_scan(struct i802_bss *bss,
wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
drv->scan_for_auth = 0;
- msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params);
+ msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
+ bss->wdev_id_set ? &bss->wdev_id : NULL);
if (!msg)
return -1;
@@ -4076,7 +4117,8 @@ static int wpa_driver_nl80211_sched_scan(void *priv,
return android_pno_start(bss, params);
#endif /* ANDROID */
- msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params);
+ msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
+ bss->wdev_id_set ? &bss->wdev_id : NULL);
if (!msg)
goto nla_put_failure;
@@ -8798,7 +8840,9 @@ static int nl80211_send_frame_cmd(struct i802_bss *bss,
freq, wait, no_cck, no_ack, offchanok);
nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
+ if (nl80211_set_iface_id(msg, bss))
+ goto nla_put_failure;
+
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
if (wait)
NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
@@ -8920,7 +8964,9 @@ static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ if (nl80211_set_iface_id(msg, bss))
+ goto nla_put_failure;
+
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
@@ -8967,7 +9013,9 @@ static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ if (nl80211_set_iface_id(msg, bss))
+ goto nla_put_failure;
+
NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
--
1.7.10.4
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