diff options
| author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2019-06-03 13:48:43 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2019-07-06 16:38:18 +0300 |
| commit | 00f62726dd8bb4554e219e38c51104c49bd31bef (patch) | |
| tree | 1dbca45cf7fd2253bc94f5103109aab03bace466 /net/bluetooth | |
| parent | 1d0fac2c38edb25067e8f69195e2f76b67a2717d (diff) | |
| download | linux-00f62726dd8bb4554e219e38c51104c49bd31bef.tar.xz | |
Bluetooth: L2CAP: Check bearer type on __l2cap_global_chan_by_addr
The spec defines PSM and LE_PSM as different domains so a listen on the
same PSM is valid if the address type points to a different bearer.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 7068eded66c3..007317b072b4 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -168,11 +168,18 @@ static struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn, return c; } -static struct l2cap_chan *__l2cap_global_chan_by_addr(__le16 psm, bdaddr_t *src) +static struct l2cap_chan *__l2cap_global_chan_by_addr(__le16 psm, bdaddr_t *src, + u8 src_type) { struct l2cap_chan *c; list_for_each_entry(c, &chan_list, global_l) { + if (src_type == BDADDR_BREDR && c->src_type != BDADDR_BREDR) + continue; + + if (src_type != BDADDR_BREDR && c->src_type == BDADDR_BREDR) + continue; + if (c->sport == psm && !bacmp(&c->src, src)) return c; } @@ -185,7 +192,7 @@ int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm) write_lock(&chan_list_lock); - if (psm && __l2cap_global_chan_by_addr(psm, src)) { + if (psm && __l2cap_global_chan_by_addr(psm, src, chan->src_type)) { err = -EADDRINUSE; goto done; } @@ -209,7 +216,8 @@ int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm) err = -EINVAL; for (p = start; p <= end; p += incr) - if (!__l2cap_global_chan_by_addr(cpu_to_le16(p), src)) { + if (!__l2cap_global_chan_by_addr(cpu_to_le16(p), src, + chan->src_type)) { chan->psm = cpu_to_le16(p); chan->sport = cpu_to_le16(p); err = 0; |