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Bluetooth: controller: Ignore connections from same peer

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Ignore connection indications from peers that are already
connected. This is to bring the behavior of the controller in
accordance with [5.2, Vol 6, Part B, 4.5 Connection state]:
"If an advertiser receives a connection request from an initiator it
is already connected to, it shall ignore that request."

Signed-off-by: Wolfgang Puffitsch <wopu@demant.com>
This commit is contained in:
Wolfgang Puffitsch 2021-02-23 15:41:44 +01:00 • committed by Anas Nashif
commit 010c5c2f20
9 changed files with 160 additions and 26 deletions
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22
subsys/bluetooth/controller/ll_sw/ull_conn.c
View file

@ -770,6 +770,28 @@ uint8_t ull_conn_default_phy_rx_get(void)
}
#endif /* CONFIG_BT_CTLR_PHY */
#if defined(CONFIG_BT_CTLR_CHECK_SAME_PEER_CONN)
bool ull_conn_peer_connected(uint8_t own_addr_type, uint8_t *own_addr,
uint8_t peer_addr_type, uint8_t *peer_addr)
{
uint16_t handle;
for (handle = 0U; handle < CONFIG_BT_MAX_CONN; handle++) {
struct ll_conn *conn = ll_connected_get(handle);
if (conn &&
conn->peer_addr_type == peer_addr_type &&
!memcmp(conn->peer_addr, peer_addr, BDADDR_SIZE) &&
conn->own_addr_type == own_addr_type &&
!memcmp(conn->own_addr, own_addr, BDADDR_SIZE)) {
return true;
}
}
return false;
}
#endif /* CONFIG_BT_CTLR_CHECK_SAME_PEER_CONN */
void ull_conn_setup(memq_link_t *link, struct node_rx_hdr *rx)
{
struct node_rx_ftr *ftr;