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component/bt : fix BLUFI bug with small MTU size

pull/302/head^2
Tian Hao 2017-02-08 15:03:57 +08:00
rodzic 02460ff864
commit 2c334b46e0
2 zmienionych plików z 13 dodań i 5 usunięć
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13
components/bt/bluedroid/btc/profile/esp/blufi/blufi_prf.c
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@ -177,6 +177,10 @@ static void blufi_profile_cb(tBTA_GATTS_EVT event, tBTA_GATTS *p_data)
blufi_env.prepare_buf = NULL;
}
break;
case BTA_GATTS_MTU_EVT:
LOG_DEBUG("MTU size %d\n", p_data->req_data.p_data->mtu);
blufi_env.frag_size = p_data->req_data.p_data->mtu - BLUFI_MTU_RESERVED_SIZE;
break;
case BTA_GATTS_CONF_EVT:
LOG_DEBUG("CONIRM EVT\n");
@ -294,6 +298,7 @@ static tGATT_STATUS btc_blufi_profile_init(void)
memset(&blufi_env, 0x0, sizeof(blufi_env));
blufi_env.cbs = store_p; /* if set callback prior, restore the point */
blufi_env.frag_size = BLUFI_FRAG_DATA_DEFAULT_LEN;
/* register the BLUFI profile to the BTA_GATTS module*/
BTA_GATTS_AppRegister(&blufi_app_uuid, blufi_profile_cb);
@ -406,16 +411,16 @@ void btc_blufi_send_encap(uint8_t type, uint8_t *data, int total_data_len)
int ret;
while (remain_len > 0) {
if (remain_len > BLUFI_FRAG_DATA_MAX_LEN) {
hdr = GKI_getbuf(sizeof(struct blufi_hdr) + 2 + BLUFI_FRAG_DATA_MAX_LEN + 2);
if (remain_len > blufi_env.frag_size) {
hdr = GKI_getbuf(sizeof(struct blufi_hdr) + 2 + blufi_env.frag_size + 2);
if (hdr == NULL) {
LOG_ERROR("%s no mem\n", __func__);
return;
}
hdr->fc = 0x0;
hdr->data_len = BLUFI_FRAG_DATA_MAX_LEN + 2;
hdr->data_len = blufi_env.frag_size + 2;
*(uint16_t *)hdr->data = remain_len;
memcpy(hdr->data + 2, &data[total_data_len - remain_len], BLUFI_FRAG_DATA_MAX_LEN); //copy first, easy for check sum
memcpy(hdr->data + 2, &data[total_data_len - remain_len], blufi_env.frag_size); //copy first, easy for check sum
hdr->fc |= BLUFI_FC_FRAG;
} else {
hdr = GKI_getbuf(sizeof(struct blufi_hdr) + remain_len + 2);

5
components/bt/bluedroid/btc/profile/esp/blufi/include/blufi_int.h
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@ -33,6 +33,7 @@ typedef struct {
BD_ADDR remote_bda;
UINT32 trans_id;
UINT8 congest;
UINT16 frag_size;
#define BLUFI_PREPAIR_BUF_MAX_SIZE 1024
uint8_t *prepare_buf;
int prepare_len;
@ -160,7 +161,9 @@ typedef struct blufi_frag_hdr blufi_frag_hdr_t;
#define BLUFI_FC_IS_REQ_ACK(fc) ((fc) & BLUFI_FC_REQ_ACK_MASK)
#define BLUFI_FC_IS_FRAG(fc) ((fc) & BLUFI_FC_FRAG_MASK)
#define BLUFI_FRAG_DATA_MAX_LEN 50
/* BLUFI HEADER + TOTAL(REMAIN) LENGTH + CRC + L2CAP RESERVED */
#define BLUFI_MTU_RESERVED_SIZE (sizeof(struct blufi_hdr) + 2 + 2 + 3)
#define BLUFI_FRAG_DATA_DEFAULT_LEN (GATT_DEF_BLE_MTU_SIZE - BLUFI_MTU_RESERVED_SIZE)
//function declare
void btc_blufi_protocol_handler(uint8_t type, uint8_t *data, int len);