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[3/3] brcmfmac: Add P2P Action Frame retry delay to fix GAS Comeback Response failure issue

Message ID 1588572453-194663-4-git-send-email-wright.feng@cypress.com (mailing list archive)
State Accepted
Commit 7f26cedfc9fda65d6e8c2aacbf5b43a33a29065c
Delegated to: Kalle Valo
Headers show
Series brcmfmac: p2p fixes and the second connection support | expand

Commit Message

Wright Feng May 4, 2020, 6:07 a.m. UTC 
From: Justin Li <Justin.Li@cypress.com>

It was observed that P2P Cert. 5.1.19: DEVUT responds to Service
Discovery request failed due to DUT did not send GAS Comeback Response
after receiving request from test bed P2P peer. To fix this issue,
we need to add P2P Action Frame retry delay to enhance P2P connection
under VSDB and noisy environment, since the peer can be in other
channels under VSDB.

Signed-off-by: Justin Li <Justin.Li@cypress.com>
Signed-off-by: Chi-hsien Lin <chi-hsien.lin@cypress.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index cb8e229..780fe21 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -66,6 +66,7 @@ 
 #define P2P_CHANNEL_SYNC_RETRY		5
 #define P2P_AF_FRM_SCAN_MAX_WAIT	msecs_to_jiffies(450)
 #define P2P_DEFAULT_SLEEP_TIME_VSDB	200
+#define P2P_AF_RETRY_DELAY_TIME		40
 
 /* WiFi P2P Public Action Frame OUI Subtypes */
 #define P2P_PAF_GON_REQ		0	/* Group Owner Negotiation Req */
@@ -1806,6 +1807,9 @@  bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
 	while (!p2p->block_gon_req_tx &&
 	       (!ack) && (tx_retry < P2P_AF_TX_MAX_RETRY) &&
 		!dwell_overflow) {
+		if (af_params->channel)
+			msleep(P2P_AF_RETRY_DELAY_TIME);
+
 		ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
 		tx_retry++;
 		dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell,