From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
The conditions for accepting an incoming connections are already
non-trivial and will become more so once a white list is added. This
patch breaks up the checks for when to reject the request by creating a
helper function for it.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
net/bluetooth/hci_event.c | 112 +++++++++++++++++++++++++---------------------
1 file changed, 60 insertions(+), 52 deletions(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 381c631423f1..6d1d5b3e9cd4 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2121,10 +2121,21 @@ unlock:
hci_conn_check_pending(hdev);
}
+static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+ struct hci_cp_reject_conn_req cp;
+
+ bacpy(&cp.bdaddr, bdaddr);
+ cp.reason = HCI_ERROR_REJ_BAD_ADDR;
+ hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
+}
+
static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_conn_request *ev = (void *) skb->data;
int mask = hdev->link_mode;
+ struct inquiry_entry *ie;
+ struct hci_conn *conn;
__u8 flags = 0;
BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
@@ -2133,74 +2144,71 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
&flags);
- if ((mask & HCI_LM_ACCEPT) &&
- !hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
+ if (!(mask & HCI_LM_ACCEPT)) {
+ hci_reject_conn(hdev, &ev->bdaddr);
+ return;
+ }
+
+ if (!hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
BDADDR_BREDR)) {
- /* Connection accepted */
- struct inquiry_entry *ie;
- struct hci_conn *conn;
+ hci_reject_conn(hdev, &ev->bdaddr);
+ return;
+ }
- hci_dev_lock(hdev);
+ /* Connection accepted */
- ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
- if (ie)
- memcpy(ie->data.dev_class, ev->dev_class, 3);
+ hci_dev_lock(hdev);
- conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
- &ev->bdaddr);
+ ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+ if (ie)
+ memcpy(ie->data.dev_class, ev->dev_class, 3);
+
+ conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
+ &ev->bdaddr);
+ if (!conn) {
+ conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr);
if (!conn) {
- conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr);
- if (!conn) {
- BT_ERR("No memory for new connection");
- hci_dev_unlock(hdev);
- return;
- }
+ BT_ERR("No memory for new connection");
+ hci_dev_unlock(hdev);
+ return;
}
+ }
- memcpy(conn->dev_class, ev->dev_class, 3);
+ memcpy(conn->dev_class, ev->dev_class, 3);
- hci_dev_unlock(hdev);
+ hci_dev_unlock(hdev);
- if (ev->link_type == ACL_LINK ||
- (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
- struct hci_cp_accept_conn_req cp;
- conn->state = BT_CONNECT;
+ if (ev->link_type == ACL_LINK ||
+ (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
+ struct hci_cp_accept_conn_req cp;
+ conn->state = BT_CONNECT;
- bacpy(&cp.bdaddr, &ev->bdaddr);
+ bacpy(&cp.bdaddr, &ev->bdaddr);
- if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
- cp.role = 0x00; /* Become master */
- else
- cp.role = 0x01; /* Remain slave */
+ if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
+ cp.role = 0x00; /* Become master */
+ else
+ cp.role = 0x01; /* Remain slave */
- hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp),
- &cp);
- } else if (!(flags & HCI_PROTO_DEFER)) {
- struct hci_cp_accept_sync_conn_req cp;
- conn->state = BT_CONNECT;
+ hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
+ } else if (!(flags & HCI_PROTO_DEFER)) {
+ struct hci_cp_accept_sync_conn_req cp;
+ conn->state = BT_CONNECT;
- bacpy(&cp.bdaddr, &ev->bdaddr);
- cp.pkt_type = cpu_to_le16(conn->pkt_type);
+ bacpy(&cp.bdaddr, &ev->bdaddr);
+ cp.pkt_type = cpu_to_le16(conn->pkt_type);
- cp.tx_bandwidth = cpu_to_le32(0x00001f40);
- cp.rx_bandwidth = cpu_to_le32(0x00001f40);
- cp.max_latency = cpu_to_le16(0xffff);
- cp.content_format = cpu_to_le16(hdev->voice_setting);
- cp.retrans_effort = 0xff;
+ cp.tx_bandwidth = cpu_to_le32(0x00001f40);
+ cp.rx_bandwidth = cpu_to_le32(0x00001f40);
+ cp.max_latency = cpu_to_le16(0xffff);
+ cp.content_format = cpu_to_le16(hdev->voice_setting);
+ cp.retrans_effort = 0xff;
- hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
- sizeof(cp), &cp);
- } else {
- conn->state = BT_CONNECT2;
- hci_proto_connect_cfm(conn, 0);
- }
+ hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
+ &cp);
} else {
- /* Connection rejected */
- struct hci_cp_reject_conn_req cp;
-
- bacpy(&cp.bdaddr, &ev->bdaddr);
- cp.reason = HCI_ERROR_REJ_BAD_ADDR;
- hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
+ conn->state = BT_CONNECT2;
+ hci_proto_connect_cfm(conn, 0);
}
}
--
1.9.3
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