Bluetooth: Fix RFCOMM usage of in-kernel L2CAP sockets
The CID value of L2CAP sockets need to be set to zero. All userspace applications do this via memset() on the sockaddr_l2 structure. The RFCOMM implementation uses in-kernel L2CAP sockets and so it has to make sure that l2_cid is set to zero. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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@ -658,6 +658,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, bdaddr_t *dst
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bacpy(&addr.l2_bdaddr, src);
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addr.l2_family = AF_BLUETOOTH;
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addr.l2_psm = 0;
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addr.l2_cid = 0;
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*err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
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if (*err < 0)
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goto failed;
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@ -679,6 +680,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, bdaddr_t *dst
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bacpy(&addr.l2_bdaddr, dst);
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addr.l2_family = AF_BLUETOOTH;
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addr.l2_psm = htobs(RFCOMM_PSM);
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addr.l2_cid = 0;
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*err = kernel_connect(sock, (struct sockaddr *) &addr, sizeof(addr), O_NONBLOCK);
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if (*err == 0 || *err == -EINPROGRESS)
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return s;
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@ -1919,6 +1921,7 @@ static int rfcomm_add_listener(bdaddr_t *ba)
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bacpy(&addr.l2_bdaddr, ba);
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addr.l2_family = AF_BLUETOOTH;
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addr.l2_psm = htobs(RFCOMM_PSM);
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addr.l2_cid = 0;
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err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
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if (err < 0) {
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BT_ERR("Bind failed %d", err);
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