This will allow to workaround Dualshock4 not respecting L2CAP MTU
size while sending SDP response.
---
lib/sdp.c | 22 ++++++++++++++++++++++
lib/sdp_lib.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/lib/sdp.c b/lib/sdp.c
index 886e7cf..4d9a4bb 100644
--- a/lib/sdp.c
+++ b/lib/sdp.c
@@ -4644,6 +4644,25 @@ static int sdp_connect_local(sdp_session_t *session)
return connect(session->sock, (struct sockaddr *) &sa, sizeof(sa));
}
+static int double_l2cap_imtu(int sk)
+{
+ struct l2cap_options l2o;
+ socklen_t len;
+
+ memset(&l2o, 0, sizeof(l2o));
+ len = sizeof(l2o);
+
+ if (getsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &l2o, &len) < 0)
+ return -1;
+
+ l2o.imtu = 2 * l2o.imtu;
+
+ if (setsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &l2o, sizeof(l2o)) < 0)
+ return -1;
+
+ return 0;
+}
+
static int sdp_connect_l2cap(const bdaddr_t *src,
const bdaddr_t *dst, sdp_session_t *session)
{
@@ -4678,6 +4697,9 @@ static int sdp_connect_l2cap(const bdaddr_t *src,
setsockopt(sk, SOL_SOCKET, SO_LINGER, &l, sizeof(l));
}
+ if ((flags & SDP_DOUBLE_IMTU) && double_l2cap_imtu(sk) < 0)
+ return -1;
+
sa.l2_psm = htobs(SDP_PSM);
sa.l2_bdaddr = *dst;
diff --git a/lib/sdp_lib.h b/lib/sdp_lib.h
index 6e1eb91..56ba2ea 100644
--- a/lib/sdp_lib.h
+++ b/lib/sdp_lib.h
@@ -81,6 +81,7 @@ static inline void sdp_list_foreach(sdp_list_t *list, sdp_list_func_t f, void *u
#define SDP_RETRY_IF_BUSY 0x01
#define SDP_WAIT_ON_CLOSE 0x02
#define SDP_NON_BLOCKING 0x04
+#define SDP_DOUBLE_IMTU 0x08
/*
* a session with an SDP server
--
1.8.5.3
--
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