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| author | Andre Eisenbach <andre@broadcom.com> | 2013-06-14 13:22:25 -0700 |
|---|---|---|
| committer | Matthew Xie <mattx@google.com> | 2013-08-13 18:24:00 -0700 |
| commit | 4b63869f02e5860244fcc7f2f62e818ee702a74b (patch) | |
| tree | cb7b91326c46ebc83208b569906890481fc3aab1 /stack/gatt/gatt_sr.c | |
| parent | 181d075dac97efec96390db3b27db50861af5e7a (diff) | |
| download | android_system_bt-4b63869f02e5860244fcc7f2f62e818ee702a74b.tar.gz android_system_bt-4b63869f02e5860244fcc7f2f62e818ee702a74b.tar.bz2 android_system_bt-4b63869f02e5860244fcc7f2f62e818ee702a74b.zip | |
LE: Limit minimum MTU size
Check requested MTU sizes to ensure a minimum MTU size. Otherwise remote
devices may request an MTU that's too small, preventing any further
communication with the remote device.
Change-Id: I3ba97cf6e6c464825778a8c8902f99f6662c3762
Diffstat (limited to 'stack/gatt/gatt_sr.c')
| -rw-r--r-- | stack/gatt/gatt_sr.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/stack/gatt/gatt_sr.c b/stack/gatt/gatt_sr.c index 71ba6a52c..b7ad6f927 100644 --- a/stack/gatt/gatt_sr.c +++ b/stack/gatt/gatt_sr.c @@ -911,10 +911,12 @@ static void gatts_process_mtu_req (tGATT_TCB *p_tcb, UINT16 len, UINT8 *p_data) else { /* mtu must be greater than default MTU which is 23/48 */ - if (mtu <= GATT_MAX_MTU_SIZE) - p_tcb->payload_size = mtu; - else + if (mtu < GATT_DEF_BLE_MTU_SIZE) + p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE; + else if (mtu > GATT_MAX_MTU_SIZE) p_tcb->payload_size = GATT_MAX_MTU_SIZE; + else + p_tcb->payload_size = mtu; if ((p_buf = attp_build_sr_msg(p_tcb, GATT_RSP_MTU, (tGATT_SR_MSG *) &p_tcb->payload_size)) != NULL) { |