From: Pauli Virtanen pav@iki.fi
[ Upstream commit 71e9588435c38112d6a8686d3d8e7cc1de8fe22c ]
The order of CIS handle array in Set CIG Parameters response shall match the order of the CIS_ID array in the command (Core v5.3 Vol 4 Part E Sec 7.8.97). We send CIS_IDs mainly in the order of increasing CIS_ID (but with "last" CIS first if it has fixed CIG_ID). In handling of the reply, we currently assume this is also the same as the order of hci_conn in hdev->conn_hash, but that is not true.
Match the correct hci_conn to the correct handle by matching them based on the CIG+CIS combination. The CIG+CIS combination shall be unique for ISO_LINK hci_conn at state >= BT_BOUND, which we maintain in hci_le_set_cig_params.
Fixes: 26afbd826ee3 ("Bluetooth: Add initial implementation of CIS connections") Signed-off-by: Pauli Virtanen pav@iki.fi Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/net/bluetooth/hci_core.h | 3 ++- net/bluetooth/hci_event.c | 44 +++++++++++++++++++------------- 2 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index a08e8dc772e54..341592d427520 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1197,7 +1197,8 @@ static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, if (id != BT_ISO_QOS_CIS_UNSET && id != c->iso_qos.ucast.cis) continue;
- if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { + /* Match destination address if set */ + if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { rcu_read_unlock(); return c; } diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index d00ef6e3fc451..09ba6d8987ee1 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3804,48 +3804,56 @@ static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, struct sk_buff *skb) { struct hci_rp_le_set_cig_params *rp = data; + struct hci_cp_le_set_cig_params *cp; struct hci_conn *conn; - int i = 0; + u8 status = rp->status; + int i;
bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+ cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); + if (!cp || rp->num_handles != cp->num_cis || rp->cig_id != cp->cig_id) { + bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); + status = HCI_ERROR_UNSPECIFIED; + } + hci_dev_lock(hdev);
- if (rp->status) { + if (status) { while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) { conn->state = BT_CLOSED; - hci_connect_cfm(conn, rp->status); + hci_connect_cfm(conn, status); hci_conn_del(conn); } goto unlock; }
- rcu_read_lock(); + /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 + * + * If the Status return parameter is zero, then the Controller shall + * set the Connection_Handle arrayed return parameter to the connection + * handle(s) corresponding to the CIS configurations specified in + * the CIS_IDs command parameter, in the same order. + */ + for (i = 0; i < rp->num_handles; ++i) { + conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, + cp->cis[i].cis_id); + if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) + continue;
- list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { - if (conn->type != ISO_LINK || - conn->iso_qos.ucast.cig != rp->cig_id || - conn->state == BT_CONNECTED) + if (conn->state != BT_BOUND && conn->state != BT_CONNECT) continue;
- conn->handle = __le16_to_cpu(rp->handle[i++]); + conn->handle = __le16_to_cpu(rp->handle[i]);
bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn, conn->handle, conn->parent);
/* Create CIS if LE is already connected */ - if (conn->parent && conn->parent->state == BT_CONNECTED) { - rcu_read_unlock(); + if (conn->parent && conn->parent->state == BT_CONNECTED) hci_le_create_cis(conn); - rcu_read_lock(); - } - - if (i == rp->num_handles) - break; }
- rcu_read_unlock(); - unlock: hci_dev_unlock(hdev);