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P2P: Delay send_action call if p2p_scan is in progress

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In order to avoid confusing the driver with a new remain-on-channel
request, delay sending of a new Action frame if the driver indicates
Action frame RX diromg a scan.
This commit is contained in:
Jouni Malinen 2010-10-20 19:41:20 +03:00 • committed by Jouni Malinen
parent 0b8889d8e5
commit 3f9285ff19
7 changed files with 107 additions and 64 deletions
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64
src/p2p/p2p.c
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@ -691,6 +691,25 @@ static int p2p_run_after_scan(struct p2p_data *p2p)
struct p2p_device *dev;
enum p2p_after_scan op;
if (p2p->after_scan_tx) {
int ret;
/* TODO: schedule p2p_run_after_scan to be called from TX
* status callback(?) */
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
"Action frame at p2p_scan completion");
ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
p2p->after_scan_tx->freq,
p2p->after_scan_tx->dst,
p2p->after_scan_tx->src,
p2p->after_scan_tx->bssid,
(u8 *) (p2p->after_scan_tx + 1),
p2p->after_scan_tx->len,
p2p->after_scan_tx->wait_time);
os_free(p2p->after_scan_tx);
p2p->after_scan_tx = NULL;
return 1;
}
op = p2p->start_after_scan;
p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
switch (op) {
@ -1831,6 +1850,7 @@ void p2p_deinit(struct p2p_data *p2p)
os_free(p2p->cfg->dev_name);
os_free(p2p->groups);
wpabuf_free(p2p->sd_resp);
os_free(p2p->after_scan_tx);
os_free(p2p);
}
@ -2675,11 +2695,9 @@ int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
return -1;
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
if (p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, go_interface_addr,
own_interface_addr,
go_interface_addr,
wpabuf_head(req), wpabuf_len(req), 200) < 0)
{
if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
go_interface_addr,
wpabuf_head(req), wpabuf_len(req), 200) < 0) {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
"P2P: Failed to send Action frame");
}
@ -2776,9 +2794,8 @@ fail:
return;
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
if (p2p->cfg->send_action(p2p->cfg->cb_ctx, rx_freq, sa, da, da,
wpabuf_head(resp), wpabuf_len(resp), 200) <
0) {
if (p2p_send_action(p2p, rx_freq, sa, da, da,
wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
"P2P: Failed to send Action frame");
}
@ -3062,3 +3079,34 @@ void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
}
int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid, const u8 *buf,
size_t len, unsigned int wait_time)
{
if (p2p->p2p_scan_running) {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
"frame TX until p2p_scan completes");
if (p2p->after_scan_tx) {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
"previous pending Action frame TX");
os_free(p2p->after_scan_tx);
}
p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
len);
if (p2p->after_scan_tx == NULL)
return -1;
p2p->after_scan_tx->freq = freq;
os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
p2p->after_scan_tx->len = len;
p2p->after_scan_tx->wait_time = wait_time;
os_memcpy(p2p->after_scan_tx + 1, buf, len);
return 0;
}
return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
buf, len, wait_time);
}