From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
Identity Addresses are either public or static random. When looking up
addresses based on the Identity Address it doesn't make sense to go
through the IRK list if we're given a private random address. This patch
fixes (or rather improves) the hci_find_irk_by_addr function to bail out
early if given a private random address.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
net/bluetooth/hci_core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index cdba4709f012..e4c5b9d6083c 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2662,6 +2662,10 @@ struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
{
struct smp_irk *irk;
+ /* Identity Address must be public or static random */
+ if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0)
+ return NULL;
+
list_for_each_entry(irk, &hdev->identity_resolving_keys, list) {
if (addr_type == irk->addr_type &&
bacmp(bdaddr, &irk->bdaddr) == 0)
--
1.8.5.3
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