From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Adds reading AMP Assoc in HCI callback
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
include/net/bluetooth/a2mp.h | 3 ++
include/net/bluetooth/amp.h | 2 +
include/net/bluetooth/hci.h | 15 +++++++++
include/net/bluetooth/hci_core.h | 8 +++++
net/bluetooth/a2mp.c | 3 +-
net/bluetooth/amp.c | 59 ++++++++++++++++++++++++++++++++++++++
net/bluetooth/hci_event.c | 44 ++++++++++++++++++++++++++++
7 files changed, 132 insertions(+), 2 deletions(-)
diff --git a/include/net/bluetooth/a2mp.h b/include/net/bluetooth/a2mp.h
index 0558088..d3ac3fe 100644
--- a/include/net/bluetooth/a2mp.h
+++ b/include/net/bluetooth/a2mp.h
@@ -122,4 +122,7 @@ int amp_mgr_put(struct amp_mgr *mgr);
struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
struct sk_buff *skb);
+
+void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data);
+
#endif /* __A2MP_H */
diff --git a/include/net/bluetooth/amp.h b/include/net/bluetooth/amp.h
index 2751bf6..64d2b44 100644
--- a/include/net/bluetooth/amp.h
+++ b/include/net/bluetooth/amp.h
@@ -15,5 +15,7 @@
#define __AMP_H
int amp_read_loc_info(struct hci_dev *hdev, struct amp_mgr *mgr);
+void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle);
+void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr);
#endif /* __AMP_H */
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 1fefe2f..c7ad8ab 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -31,6 +31,7 @@
#define HCI_MAX_FRAME_SIZE (HCI_MAX_ACL_SIZE + 4)
#define HCI_MAX_AMP_KEY_SIZE 32
+#define HCI_MAX_AMP_ASSOC_SIZE 672
/* HCI dev events */
#define HCI_DEV_REG 1
@@ -853,6 +854,20 @@ struct hci_rp_read_local_amp_info {
__le32 be_flush_to;
} __packed;
+#define HCI_OP_READ_LOCAL_AMP_ASSOC 0x140a
+struct hci_cp_read_local_amp_assoc {
+ __u8 handle;
+ __le16 len_so_far;
+ __le16 max_len;
+} __packed;
+
+struct hci_rp_read_local_amp_assoc {
+ __u8 status;
+ __u8 handle;
+ __le16 rem_len;
+ __u8 frag[0];
+} __packed;
+
#define HCI_OP_LE_SET_EVENT_MASK 0x2001
struct hci_cp_le_set_event_mask {
__u8 mask[8];
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 290a87d..a0173da 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -142,6 +142,12 @@ struct hci_cb_cmd {
void (*destructor)(struct hci_cb_cmd *cmd);
};
+struct amp_assoc {
+ __u16 len;
+ __u16 offset;
+ __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
+};
+
#define NUM_REASSEMBLY 4
struct hci_dev {
struct list_head list;
@@ -195,6 +201,8 @@ struct hci_dev {
__u32 amp_max_flush_to;
__u32 amp_be_flush_to;
+ struct amp_assoc loc_assoc;
+
__u8 flow_ctl_mode;
unsigned int auto_accept_delay;
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index 5a50a0b..2745c68 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -52,8 +52,7 @@ static inline int __a2mp_send(struct amp_mgr *mgr, u8 *data, int len)
return l2cap_chan_send(chan, &msg, len, 0);
}
-static void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len,
- void *data)
+void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data)
{
struct a2mp_cmd *cmd;
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index af009e0..c36bdf3 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -47,3 +47,62 @@ int amp_read_loc_info(struct hci_dev *hdev, struct amp_mgr *mgr)
return err;
}
+
+void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle)
+{
+ struct hci_cp_read_local_amp_assoc cp;
+ struct amp_assoc *loc_assoc = &hdev->loc_assoc;
+
+ BT_DBG("%s: handle %d", hdev->name, phy_handle);
+
+ cp.handle = phy_handle;
+ cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
+ cp.len_so_far = cpu_to_le16(loc_assoc->offset);
+
+ hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
+}
+
+static void amp_read_loc_assoc_complete(struct hci_dev *hdev,
+ struct hci_cb_cmd *cmd)
+{
+ struct amp_mgr *mgr = cmd->opt;
+ struct amp_assoc *loc_assoc = &hdev->loc_assoc;
+ struct a2mp_amp_assoc_rsp *rsp;
+ size_t len;
+
+ BT_DBG("%s: cmd %p", hdev->name, cmd);
+
+ len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len;
+ rsp = kzalloc(len, GFP_KERNEL);
+ if (!rsp)
+ return;
+
+ rsp->id = hdev->id;
+
+ if (cmd->status) {
+ rsp->status = A2MP_STATUS_INVALID_CTRL_ID;
+ goto send;
+ }
+
+ rsp->status = A2MP_STATUS_SUCCESS;
+ memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len);
+
+send:
+ a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp);
+ kfree(rsp);
+}
+
+void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr)
+{
+ struct hci_cp_read_local_amp_assoc cp;
+
+ memset(&hdev->loc_assoc, 0, sizeof(struct amp_assoc));
+ memset(&cp, 0, sizeof(cp));
+
+ cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
+
+ amp_mgr_get(mgr);
+
+ hci_cmd_cb(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp,
+ amp_read_loc_assoc_complete, mgr, cb_destructor, GFP_KERNEL);
+}
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3053354..37e1d11 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -44,6 +44,7 @@
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/a2mp.h>
+#include <net/bluetooth/amp.h>
/* Handle HCI Event packets */
@@ -880,6 +881,45 @@ send:
}
}
+static void hci_cc_read_local_amp_assoc(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_rp_read_local_amp_assoc *rp = (void *)skb->data;
+ struct amp_assoc *assoc = &hdev->loc_assoc;
+ struct hci_cb_cmd *cmd;
+ size_t rem_len, frag_len;
+
+ BT_DBG("%s status 0x%x", hdev->name, rp->status);
+
+ if (rp->status)
+ goto send;
+
+ frag_len = skb->len - sizeof(*rp);
+ rem_len = __le16_to_cpu(rp->rem_len);
+
+ if (rem_len > frag_len) {
+ memcpy(assoc->data + assoc->offset, rp->frag, frag_len);
+ assoc->offset += frag_len;
+
+ /* Read other fragments */
+ amp_read_loc_assoc_frag(hdev, rp->handle);
+
+ return;
+ }
+
+ memcpy(assoc->data + assoc->offset, rp->frag, rem_len);
+ assoc->len = assoc->offset + rem_len;
+ assoc->offset = 0;
+
+send:
+ /* Run callback when all fragments received */
+ cmd = hci_find_cb(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC);
+ if (cmd) {
+ cmd->status = rp->status;
+ hci_queue_cb(hdev, cmd, hdev->workqueue);
+ }
+}
+
static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
struct sk_buff *skb)
{
@@ -2301,6 +2341,10 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
hci_cc_read_local_amp_info(hdev, skb);
break;
+ case HCI_OP_READ_LOCAL_AMP_ASSOC:
+ hci_cc_read_local_amp_assoc(hdev, skb);
+ break;
+
case HCI_OP_DELETE_STORED_LINK_KEY:
hci_cc_delete_stored_link_key(hdev, skb);
break;
--
1.7.9.1
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