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ble_mesh: lpn remove msg from cache on rejection

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This commit is contained in:
lly 2019-09-02 15:17:20 +08:00
parent 225ee8e5d1
commit a73cc70af9
2 changed files with 16 additions and 2 deletions
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17
components/bt/esp_ble_mesh/mesh_core/net.c
View File

@ -135,7 +135,8 @@ static bool msg_cache_match(struct bt_mesh_net_rx *rx,
}
/* Add to the cache */
msg_cache[msg_cache_next++] = hash;
rx->msg_cache_idx = msg_cache_next++;
msg_cache[rx->msg_cache_idx] = hash;
msg_cache_next %= ARRAY_SIZE(msg_cache);
return false;
@ -1380,7 +1381,19 @@ void bt_mesh_net_recv(struct net_buf_simple *data, s8_t rssi,
rx.local_match = (bt_mesh_fixed_group_match(rx.ctx.recv_dst) ||
bt_mesh_elem_find(rx.ctx.recv_dst));
bt_mesh_trans_recv(&buf, &rx);
/* The transport layer has indicated that it has rejected the message,
* but would like to see it again if it is received in the future.
* This can happen if a message is received when the device is in
* Low Power mode, but the message was not encrypted with the friend
* credentials. Remove it from the message cache so that we accept
* it again in the future.
*/
if (bt_mesh_trans_recv(&buf, &rx) == -EAGAIN) {
BT_WARN("Removing rejected message from Network Message Cache");
msg_cache[rx.msg_cache_idx] = 0ULL;
/* Rewind the next index now that we're not using this entry */
msg_cache_next = rx.msg_cache_idx;
}
/* Relay if this was a group/virtual address, or if the destination
* was neither a local element nor an LPN we're Friends for.

1
components/bt/esp_ble_mesh/mesh_core/net.h
View File

@ -289,6 +289,7 @@ struct bt_mesh_net_rx {
net_if: 2, /* Network interface */
local_match: 1, /* Matched a local element */
friend_match: 1; /* Matched an LPN we're friends for */
u16_t msg_cache_idx; /* Index of entry in message cache */
s8_t rssi;
};