L2cap user dynamic channel: move psm alloc to bta am: a3eca176b2 (9ea0cd35) · Commits · e / os / android_packages_modules_Bluetooth

system/bta/jv/bta_jv_act.cc

+28 −1

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@
		#include <pthread.h>
		#include <stdlib.h>
		#include <string.h>
		#include <unordered_set>

		#include "avct_api.h"
		#include "avdt_api.h"
		@@ -51,6 +52,7 @@
		using bluetooth::Uuid;

		tBTA_JV_CB bta_jv_cb;
		std::unordered_set<uint16_t> used_l2cap_classic_dynamic_psm;

		static tBTA_JV_PCB* bta_jv_add_rfc_port(tBTA_JV_RFC_CB* p_cb,
		tBTA_JV_PCB* p_pcb_open);
		@@ -609,6 +611,31 @@ static void bta_jv_set_free_psm(uint16_t psm) {
		}
		}

		static uint16_t bta_jv_allocate_l2cap_classic_psm() {
		bool done = false;
		uint16_t psm = bta_jv_cb.dyn_psm;

		while (!done) {
		psm += 2;
		if (psm > 0xfeff) {
		psm = 0x1001;
		} else if (psm & 0x0100) {
		/* the upper byte must be even */
		psm += 0x0100;
		}

		/* if psm is in range of reserved BRCM Aware features */
		if ((BRCM_RESERVED_PSM_START <= psm) && (psm <= BRCM_RESERVED_PSM_END))
		continue;

		/* make sure the newlly allocated psm is not used right now */
		if (used_l2cap_classic_dynamic_psm.count(psm) == 0) done = true;
		}
		bta_jv_cb.dyn_psm = psm;

		return (psm);
		}

		/** Obtain a free SCN (Server Channel Number) (RFCOMM channel or L2CAP PSM) */
		void bta_jv_get_channel_id(
		int32_t type /* One of BTA_JV_CONN_TYPE_ */,
		@@ -646,7 +673,7 @@ void bta_jv_get_channel_id(
		case BTA_JV_CONN_TYPE_L2CAP:
		psm = bta_jv_get_free_psm();
		if (psm == 0) {
		psm = L2CA_AllocatePSM();
		psm = bta_jv_allocate_l2cap_classic_psm();
		VLOG(2) << __func__ << ": returned PSM=" << loghex(psm);
		}
		break;

+2 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,8 @@ tBTA_JV_STATUS BTA_JvEnable(tBTA_JV_DM_CBACK* p_cback) {
		for (int i = 0; i < BTA_JV_PM_MAX_NUM; i++) {
		bta_jv_cb.pm_cb[i].handle = BTA_JV_PM_HANDLE_CLEAR;
		}
		bta_jv_cb.dyn_psm = 0xfff;
		used_l2cap_classic_dynamic_psm = {};

		bta_jv_enabled = true;

+4 −0

Original line number	Diff line number	Diff line
		@@ -125,6 +125,8 @@ typedef struct {
		uint8_t sdp_active; /* see BTA_JV_SDP_ACT_* */
		bluetooth::Uuid uuid; /* current uuid of sdp discovery*/
		tBTA_JV_PM_CB pm_cb[BTA_JV_PM_MAX_NUM]; /* PM on a per JV handle bases */

		uint16_t dyn_psm; /* Next dynamic PSM value to try to assign */
		} tBTA_JV_CB;

		enum {
		@@ -136,6 +138,8 @@ enum {
		/* JV control block */
		extern tBTA_JV_CB bta_jv_cb;

		extern std::unordered_set<uint16_t> used_l2cap_classic_dynamic_psm;

		/* config struct */
		extern tBTA_JV_CFG* p_bta_jv_cfg;

+0 −12

Original line number	Diff line number	Diff line
		@@ -312,18 +312,6 @@ extern uint16_t L2CA_Register(uint16_t psm, const tL2CAP_APPL_INFO& p_cb_info,
		******************************************************************************/
		extern void L2CA_Deregister(uint16_t psm);

		/*******************************************************************************
		*
		* Function L2CA_AllocatePSM
		*
		* Description Other layers call this function to find an unused PSM for
		* L2CAP services.
		*
		* Returns PSM to use.
		*
		******************************************************************************/
		extern uint16_t L2CA_AllocatePSM(void);

		/*******************************************************************************
		*
		* Function L2CA_AllocateLePSM

+0 −40

Original line number	Diff line number	Diff line
		@@ -182,46 +182,6 @@ void L2CA_Deregister(uint16_t psm) {
		}
		}

		/*******************************************************************************
		*
		* Function L2CA_AllocatePSM
		*
		* Description Other layers call this function to find an unused PSM for
		* L2CAP services.
		*
		* Returns PSM to use.
		*
		******************************************************************************/
		uint16_t L2CA_AllocatePSM(void) {
		if (bluetooth::shim::is_gd_shim_enabled()) {
		return bluetooth::shim::L2CA_AllocatePSM();
		}

		bool done = false;
		uint16_t psm = l2cb.dyn_psm;

		L2CAP_TRACE_API("L2CA_AllocatePSM");
		while (!done) {
		psm += 2;
		if (psm > 0xfeff) {
		psm = 0x1001;
		} else if (psm & 0x0100) {
		/* the upper byte must be even */
		psm += 0x0100;
		}

		/* if psm is in range of reserved BRCM Aware features */
		if ((BRCM_RESERVED_PSM_START <= psm) && (psm <= BRCM_RESERVED_PSM_END))
		continue;

		/* make sure the newlly allocated psm is not used right now */
		if ((l2cu_find_rcb_by_psm(psm)) == NULL) done = true;
		}
		l2cb.dyn_psm = psm;

		return (psm);
		}

		/*******************************************************************************
		*
		* Function L2CA_AllocateLePSM