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fix multi-connection crash (smp-08003)

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This commit is contained in:
zwj
2020-12-18 12:00:17 +08:00
parent e81104f377
commit 273d2fd5ec
3 changed files with 46 additions and 16 deletions
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1
components/bt/host/bluedroid/stack/l2cap/include/l2c_int.h
View File

@@ -609,6 +609,7 @@ extern void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY prior
extern tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid);
extern void l2cu_release_ccb (tL2C_CCB *p_ccb);
extern tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid);
extern tL2C_CCB *l2cu_find_free_ccb(void);
extern tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid);
extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask);
extern BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb);

18
components/bt/host/bluedroid/stack/l2cap/l2c_main.c
View File

@@ -904,12 +904,28 @@ void l2c_free_p_lcb_pool(void)
list_free(l2cb.p_lcb_pool);
}
void l2c_free_p_ccb_pool(void)
{
list_node_t *p_node = NULL;
tL2C_CCB *p_ccb = NULL;
for (p_node = list_begin(l2cb.p_ccb_pool); p_node; p_node = list_next(p_node)) {
p_ccb = list_node(p_node);
if (p_ccb) {
l2cu_release_ccb (p_ccb);
list_remove(l2cb.p_ccb_pool, p_ccb);
osi_free(p_ccb);
}
}
list_free(l2cb.p_ccb_pool);
}
void l2c_free(void)
{
list_free(l2cb.rcv_pending_q);
l2cb.rcv_pending_q = NULL;
l2c_free_p_lcb_pool();
list_free(l2cb.p_ccb_pool);
l2c_free_p_ccb_pool();
#if L2C_DYNAMIC_MEMORY
FREE_AND_RESET(l2c_cb_ptr);
#endif

43
components/bt/host/bluedroid/stack/l2cap/l2c_utils.c
View File

@@ -1450,14 +1450,17 @@ tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid)
tL2C_CCB *p_ccb = NULL;
L2CAP_TRACE_DEBUG ("l2cu_allocate_ccb: cid 0x%04x", cid);
p_ccb = l2cu_find_free_ccb ();
if(p_ccb == NULL) {
if (list_length(l2cb.p_ccb_pool) < MAX_L2CAP_CHANNELS) {
p_ccb = (tL2C_CCB *)osi_malloc(sizeof(tL2C_CCB));
if (list_length(l2cb.p_ccb_pool) < MAX_L2CAP_CHANNELS) {
p_ccb = (tL2C_CCB *)osi_malloc(sizeof(tL2C_CCB));
if (p_ccb) {
memset (p_ccb, 0, sizeof(tL2C_CCB));
list_append(l2cb.p_ccb_pool, p_ccb);
}
}
if (p_ccb) {
memset (p_ccb, 0, sizeof(tL2C_CCB));
list_append(l2cb.p_ccb_pool, p_ccb);
}
}
}
if (p_ccb == NULL) {
return (NULL);
}
@@ -1686,14 +1689,7 @@ void l2cu_release_ccb (tL2C_CCB *p_ccb)
/* Flag as not in use */
p_ccb->in_use = FALSE;
{
if (list_remove(l2cb.p_ccb_pool, p_ccb)) {
p_ccb = NULL;
}
else {
L2CAP_TRACE_ERROR("Error in removing L2CAP Channel Control Block");
}
}
/* If no channels on the connection, start idle timeout */
if ((p_lcb) && p_lcb->in_use && (p_lcb->link_state == LST_CONNECTED)) {
if (!p_lcb->ccb_queue.p_first_ccb) {
@@ -3268,6 +3264,23 @@ tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid)
return (p_ccb);
}
tL2C_CCB *l2cu_find_free_ccb (void)
{
tL2C_CCB *p_ccb = NULL;
list_node_t *p_node = NULL;
for (p_node = list_begin(l2cb.p_ccb_pool); p_node; p_node = list_next(p_node))
{
p_ccb = list_node(p_node);
if(p_ccb && !p_ccb->in_use ) {
return p_ccb;
}
}
return (NULL);
}
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE && CLASSIC_BT_INCLUDED == TRUE)
/******************************************************************************