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Message-Id: <20200616210008.1.I31e5a748e9aacdf5494c1904c59066415cb5b097@changeid>
Date: Tue, 16 Jun 2020 21:00:19 -0700
From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To: marcel@...tmann.org, linux-bluetooth@...r.kernel.org
Cc: alainm@...omium.org, chromeos-bluetooth-upstreaming@...omium.org,
Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
"David S. Miller" <davem@...emloft.net>,
Johan Hedberg <johan.hedberg@...il.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 1/4] Bluetooth: Add bdaddr_list_with_flags for classic whitelist
In order to more easily add device flags to classic devices, create
a new type of bdaddr_list that supports setting flags.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
Reviewed-by: Alain Michaud <alainm@...omium.org>
---
include/net/bluetooth/hci_core.h | 18 ++++++++--
net/bluetooth/hci_core.c | 58 ++++++++++++++++++++++++++++++++
net/bluetooth/hci_event.c | 8 ++---
net/bluetooth/mgmt.c | 5 +--
4 files changed, 81 insertions(+), 8 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 0d5dbb6cb5a089..95a3935325bbbc 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -136,6 +136,13 @@ struct bdaddr_list_with_irk {
u8 local_irk[16];
};
+struct bdaddr_list_with_flags {
+ struct list_head list;
+ bdaddr_t bdaddr;
+ u8 bdaddr_type;
+ u32 current_flags;
+};
+
struct bt_uuid {
struct list_head list;
u8 uuid[16];
@@ -1169,12 +1176,19 @@ struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
struct list_head *list, bdaddr_t *bdaddr,
u8 type);
+struct bdaddr_list_with_flags *
+hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
+ u8 type);
int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
- u8 type, u8 *peer_irk, u8 *local_irk);
+ u8 type, u8 *peer_irk, u8 *local_irk);
+int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
+ u8 type, u32 flags);
int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
- u8 type);
+ u8 type);
+int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
+ u8 type);
void hci_bdaddr_list_clear(struct list_head *list);
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 4f1052a7c488e5..8a471bec2731ed 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3023,6 +3023,20 @@ struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
return NULL;
}
+struct bdaddr_list_with_flags *
+hci_bdaddr_list_lookup_with_flags(struct list_head *bdaddr_list,
+ bdaddr_t *bdaddr, u8 type)
+{
+ struct bdaddr_list_with_flags *b;
+
+ list_for_each_entry(b, bdaddr_list, list) {
+ if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
+ return b;
+ }
+
+ return NULL;
+}
+
void hci_bdaddr_list_clear(struct list_head *bdaddr_list)
{
struct bdaddr_list *b, *n;
@@ -3084,6 +3098,30 @@ int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
return 0;
}
+int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
+ u8 type, u32 flags)
+{
+ struct bdaddr_list_with_flags *entry;
+
+ if (!bacmp(bdaddr, BDADDR_ANY))
+ return -EBADF;
+
+ if (hci_bdaddr_list_lookup(list, bdaddr, type))
+ return -EEXIST;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ bacpy(&entry->bdaddr, bdaddr);
+ entry->bdaddr_type = type;
+ entry->current_flags = flags;
+
+ list_add(&entry->list, list);
+
+ return 0;
+}
+
int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type)
{
struct bdaddr_list *entry;
@@ -3123,6 +3161,26 @@ int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
return 0;
}
+int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
+ u8 type)
+{
+ struct bdaddr_list_with_flags *entry;
+
+ if (!bacmp(bdaddr, BDADDR_ANY)) {
+ hci_bdaddr_list_clear(list);
+ return 0;
+ }
+
+ entry = hci_bdaddr_list_lookup_with_flags(list, bdaddr, type);
+ if (!entry)
+ return -ENOENT;
+
+ list_del(&entry->list);
+ kfree(entry);
+
+ return 0;
+}
+
/* This function requires the caller holds hdev->lock */
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
bdaddr_t *addr, u8 addr_type)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index cfeaee347db32d..8981954ff4c47d 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2697,10 +2697,10 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
*/
if (hci_dev_test_flag(hdev, HCI_MGMT) &&
!hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
- !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
- BDADDR_BREDR)) {
- hci_reject_conn(hdev, &ev->bdaddr);
- return;
+ !hci_bdaddr_list_lookup_with_flags(&hdev->whitelist, &ev->bdaddr,
+ BDADDR_BREDR)) {
+ hci_reject_conn(hdev, &ev->bdaddr);
+ return;
}
/* Connection accepted */
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 99fbfd467d0465..6d996e5e5bcc2d 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -5997,8 +5997,9 @@ static int add_device(struct sock *sk, struct hci_dev *hdev,
goto unlock;
}
- err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
- cp->addr.type);
+ err = hci_bdaddr_list_add_with_flags(&hdev->whitelist,
+ &cp->addr.bdaddr,
+ cp->addr.type, 0);
if (err)
goto unlock;
--
2.27.0.290.gba653c62da-goog
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