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NFC: Forbid SSAP binding to a not well known LLCP service

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With not Well Known Services there is no guarantees as to which
SSAP the server will be listening on, so there is no reason to
support binding to a specific source SAP.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2012-06-22 17:15:20 +02:00 committed by John W. Linville
parent 8b7e8eda58
commit ebbb16d9eb
1 changed files with 5 additions and 17 deletions
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22
net/nfc/llcp/llcp.c
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@ -234,24 +234,12 @@ u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
return LLCP_WKS_NUM_SAP + ssap;
} else if (sock->ssap != 0) {
if (sock->ssap < LLCP_WKS_NUM_SAP) {
if (!test_bit(sock->ssap, &local->local_wks)) {
set_bit(sock->ssap, &local->local_wks);
mutex_unlock(&local->sdp_lock);
} else if (sock->ssap != 0 && sock->ssap < LLCP_WKS_NUM_SAP) {
if (!test_bit(sock->ssap, &local->local_wks)) {
set_bit(sock->ssap, &local->local_wks);
mutex_unlock(&local->sdp_lock);
return sock->ssap;
}
} else if (sock->ssap < LLCP_SDP_NUM_SAP) {
if (!test_bit(sock->ssap - LLCP_WKS_NUM_SAP,
&local->local_sdp)) {
set_bit(sock->ssap - LLCP_WKS_NUM_SAP,
&local->local_sdp);
mutex_unlock(&local->sdp_lock);
return sock->ssap;
}
return sock->ssap;
}
}