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From:   Sathish Narasimman <nsathish41@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Cc:     chethan.tumkur.narayan@intel.com, ravishankar.srivatsa@intel.com,
        Sathish Narasimman <sathish.narasimman@intel.com>
Subject: [Bluez PATCH] profile: GOEP Set IMTU to 32k
Date:   Tue,  3 Nov 2020 13:00:32 +0530
Message-Id: <20201103073032.4532-1-sathish.narasimman@intel.com>
Precedence: bulk

OPP-RX Throughput is low Due to Low MTU value in case of OBEX
over L2CAP. Changing the default L2CAP MTU from 672 to 32767.

Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
---
 src/profile.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/profile.c b/src/profile.c
index 5e460b639..99a5e1a4a 100644
--- a/src/profile.c
+++ b/src/profile.c
@@ -41,6 +41,8 @@
 #include "profile.h"
 #include "service.h"
 
+#define BTRX_MTU               32767
+
 #define DUN_DEFAULT_CHANNEL	1
 #define SPP_DEFAULT_CHANNEL	3
 #define HSP_HS_DEFAULT_CHANNEL	6
@@ -1358,6 +1360,11 @@ static uint32_t ext_start_servers(struct ext_profile *ext,
 			l2cap->adapter = btd_adapter_ref(adapter);
 			ext->servers = g_slist_append(ext->servers, l2cap);
 			DBG("%s listening on PSM %u", ext->name, psm);
+			if (g_strcmp0(ext->name, "Object Push") == 0) {
+				if (!bt_io_set(io, NULL, BT_IO_OPT_IMTU, BTRX_MTU,
+				    BT_IO_OPT_INVALID))
+					DBG("ERROR bt_io_set Unable to set MTU");
+			}
 		}
 	}
 
-- 
2.17.1