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Bluetooth: Socket lookup for a fixed L2CAP channel

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Socket lookup for a fixed channel should be done based on both remote and
local device addresses.

Change-Id: I35f39bea8ade6fd5d8695640251efc54bf21beae
Signed-off-by: Inga Stotland <ingas@codeaurora.org>
This commit is contained in:
Inga Stotland
2011-10-11 08:56:15 -07:00
parent 5ec7cbebdd
commit f214b6e656
1 changed files with 32 additions and 1 deletions
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33
net/bluetooth/l2cap_core.c
View File

@@ -909,6 +909,37 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
}
}
/* Find socket with fixed cid with given source and destination bdaddrs.
* Returns closest match, locked.
*/
static struct sock *l2cap_get_sock_by_fixed_scid(int state,
__le16 cid, bdaddr_t *src, bdaddr_t *dst)
{
struct sock *sk = NULL, *sk1 = NULL;
struct hlist_node *node;
read_lock(&l2cap_sk_list.lock);
sk_for_each(sk, node, &l2cap_sk_list.head) {
if (state && sk->sk_state != state)
continue;
if (l2cap_pi(sk)->scid == cid && !bacmp(&bt_sk(sk)->dst, dst)) {
/* Exact match. */
if (!bacmp(&bt_sk(sk)->src, src))
break;
/* Closest match */
if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
sk1 = sk;
}
}
read_unlock(&l2cap_sk_list.lock);
return node ? sk : sk1;
}
/* Find socket with cid and source bdaddr.
* Returns closest match, locked.
*/
@@ -7051,7 +7082,7 @@ static inline int l2cap_att_channel(struct l2cap_conn *conn, __le16 cid, struct
{
struct sock *sk;
sk = l2cap_get_sock_by_scid(0, cid, conn->src);
sk = l2cap_get_sock_by_fixed_scid(0, cid, conn->src, conn->dst);
if (!sk)
goto drop;