P2PS: Add CPT parameter to P2PS_PROVISION and P2PS_PROVISION_RESP

Add a parameter allowing to specify a value of Coordination
Protocol Transport to P2PS_PROVISION and P2PS_PROVISION_RESP commands.

Extend the p2ps_provision structure to contain cpt_priority and
cpt_mask properties and initialize them on a P2PS PD request command.

The format of the parameter:
    cpt=<cpt>[:cpt]

where <cpt> is CPT name e.g. UDP or MAC. The CPT names are listed
according to their preferences to be used for a specific P2PS session.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>

src/p2p/p2p.h

@@ -196,6 +196,23 @@ struct p2ps_provision {
 	 */
 	u8 adv_mac[ETH_ALEN];
 
+	/**
+	 * cpt_mask - Supported Coordination Protocol Transport mask
+	 *
+	 * A bitwise mask of supported ASP Coordination Protocol Transports.
+	 * This property is set together and corresponds with cpt_priority.
+	 */
+	u8 cpt_mask;
+
+	/**
+	 * cpt_priority - Coordination Protocol Transport priority list
+	 *
+	 * Priorities of supported ASP Coordination Protocol Transports.
+	 * This property is set together and corresponds with cpt_mask.
+	 * The CPT priority list is 0 terminated.
+	 */
+	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
+
 	/**
 	 * info - Vendor defined extra Provisioning information
 	 */

wpa_supplicant/ctrl_iface.c

@@ -4702,6 +4702,7 @@ static struct p2ps_provision * p2p_parse_asp_provision_cmd(const char *cmd)
 	char *info = NULL;
 	u8 role = P2PS_SETUP_NONE;
 	long long unsigned val;
+	int i;
 
 	pos = os_strstr(cmd, "info=");
 	if (pos) {
@@ -4760,6 +4761,18 @@ static struct p2ps_provision * p2p_parse_asp_provision_cmd(const char *cmd)
 	if (!pos || hwaddr_aton(pos + 12, p2ps_prov->session_mac))
 		goto invalid_args;
 
+	pos = os_strstr(cmd, "cpt=");
+	if (pos) {
+		if (p2ps_ctrl_parse_cpt_priority(pos + 4,
+						 p2ps_prov->cpt_priority))
+			goto invalid_args;
+	} else {
+		p2ps_prov->cpt_priority[0] = P2PS_FEATURE_CAPAB_UDP_TRANSPORT;
+	}
+
+	for (i = 0; p2ps_prov->cpt_priority[i]; i++)
+		p2ps_prov->cpt_mask |= p2ps_prov->cpt_priority[i];
+
 	/* force conncap with tstCap (no sanity checks) */
 	pos = os_strstr(cmd, "tstCap=");
 	if (pos) {