qcacld-3.0: Add support for IBSS+SAP

Provide necessary code changes to support IBSS+SAP concurrency for
emulation platform only.

Change-Id: I76dc023bd48ee79ba706f5a7009b1d8462c6b712
CRs-Fixed: 953796

core/cds/src/cds_concurrency.c

@@ -4660,11 +4660,25 @@ bool cds_allow_concurrency(hdd_context_t *hdd_ctx, enum cds_con_mode mode,
 				cds_err("No IBSS, we have concurrent connections already");
 				goto done;
 			}
+#ifndef QCA_WIFI_3_0_EMU
 			if (CDS_STA_MODE != conc_connection_list[0].mode) {
 				/* err msg */
-				cds_err("No IBSS, we have a non STA connection");
+				cds_err("No IBSS, we've a non-STA connection");
+				goto done;
+			}
+#else
+			if (CDS_STA_MODE != conc_connection_list[0].mode &&
+				CDS_SAP_MODE != conc_connection_list[0].mode) {
+				/* err msg */
+				cds_err("No IBSS, we've a non-STA/SAP conn");
 				goto done;
 			}
+#endif
+			/*
+			 * This logic protects STA and IBSS to come up on same
+			 * band. If requirement changes then this condition
+			 * needs to be removed
+			 */
 			if (channel &&
 				(conc_connection_list[0].chan != channel) &&
 				CDS_IS_SAME_BAND_CHANNELS(

core/hdd/src/wlan_hdd_cfg80211.c

@@ -374,6 +374,7 @@ static const struct ieee80211_iface_limit
 	},
 };
 
+#ifndef QCA_WIFI_3_0_EMU
 /* ADHOC (IBSS) limit */
 static const struct ieee80211_iface_limit
 	wlan_hdd_adhoc_iface_limit[] = {
@@ -386,6 +387,20 @@ static const struct ieee80211_iface_limit
 		.types = BIT(NL80211_IFTYPE_ADHOC),
 	},
 };
+#else
+/* ADHOC (IBSS) limit */
+static const struct ieee80211_iface_limit
+	wlan_hdd_adhoc_iface_limit[] = {
+	{
+		.max = 1,
+		.types = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
+	},
+	{
+		.max = 1,
+		.types = BIT(NL80211_IFTYPE_ADHOC),
+	},
+};
+#endif
 
 /* AP ( + AP ) combination */
 static const struct ieee80211_iface_limit

core/sme/src/csr/csr_util.c

@@ -1877,10 +1877,13 @@ csr_isconcurrentsession_valid(tpAniSirGlobal mac_ctx, uint32_t cur_sessionid,
 #endif
 				if ((bss_persona == CDF_IBSS_MODE)
 					&& (connect_state != temp)) {
+					/* allow IBSS+SAP for Emulation only */
+#ifndef QCA_WIFI_3_0_EMU
 					CDF_TRACE(CDF_MODULE_ID_SME,
 							CDF_TRACE_LEVEL_ERROR,
-							FL("Can't start GO"));
+							FL("Can't start SAP"));
 					return CDF_STATUS_E_FAILURE;
+#endif
 				}
 			break;
 
@@ -1916,10 +1919,13 @@ csr_isconcurrentsession_valid(tpAniSirGlobal mac_ctx, uint32_t cur_sessionid,
 					(bss_persona == CDF_SAP_MODE)) &&
 					(connect_state !=
 					 eCSR_ASSOC_STATE_TYPE_NOT_CONNECTED)) {
+				/* allow IBSS+SAP for Emulation only */
+#ifndef QCA_WIFI_3_0_EMU
 				CDF_TRACE(CDF_MODULE_ID_SME,
 						CDF_TRACE_LEVEL_ERROR,
-						FL("Can't start GO"));
+						FL("Can't start GO/SAP"));
 				return CDF_STATUS_E_FAILURE;
+#endif
 			}
 			break;
 		case CDF_P2P_CLIENT_MODE: