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-rw-r--r--net/tipc/socket.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index ead22e5eed32..4c83aba575c5 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1079,15 +1079,15 @@ exit:
1079} 1079}
1080 1080
1081/** 1081/**
1082 * queue_overloaded - test if queue overload condition exists 1082 * rx_queue_full - determine if receive queue can accept another message
1083 * @msg: message to be added to queue
1083 * @queue_size: current size of queue 1084 * @queue_size: current size of queue
1084 * @base: nominal maximum size of queue 1085 * @base: nominal maximum size of queue
1085 * @msg: message to be added to queue
1086 * 1086 *
1087 * Returns 1 if queue is currently overloaded, 0 otherwise 1087 * Returns 1 if queue is unable to accept message, 0 otherwise
1088 */ 1088 */
1089 1089
1090static int queue_overloaded(u32 queue_size, u32 base, struct tipc_msg *msg) 1090static int rx_queue_full(struct tipc_msg *msg, u32 queue_size, u32 base)
1091{ 1091{
1092 u32 threshold; 1092 u32 threshold;
1093 u32 imp = msg_importance(msg); 1093 u32 imp = msg_importance(msg);
@@ -1104,7 +1104,7 @@ static int queue_overloaded(u32 queue_size, u32 base, struct tipc_msg *msg)
1104 if (msg_connected(msg)) 1104 if (msg_connected(msg))
1105 threshold *= 4; 1105 threshold *= 4;
1106 1106
1107 return (queue_size > threshold); 1107 return (queue_size >= threshold);
1108} 1108}
1109 1109
1110/** 1110/**
@@ -1189,16 +1189,14 @@ static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
1189 1189
1190 /* Reject message if there isn't room to queue it */ 1190 /* Reject message if there isn't room to queue it */
1191 1191
1192 if (unlikely((u32)atomic_read(&tipc_queue_size) > 1192 recv_q_len = (u32)atomic_read(&tipc_queue_size);
1193 OVERLOAD_LIMIT_BASE)) { 1193 if (unlikely(recv_q_len >= OVERLOAD_LIMIT_BASE)) {
1194 if (queue_overloaded(atomic_read(&tipc_queue_size), 1194 if (rx_queue_full(msg, recv_q_len, OVERLOAD_LIMIT_BASE))
1195 OVERLOAD_LIMIT_BASE, msg))
1196 return TIPC_ERR_OVERLOAD; 1195 return TIPC_ERR_OVERLOAD;
1197 } 1196 }
1198 recv_q_len = skb_queue_len(&tsock->sk.sk_receive_queue); 1197 recv_q_len = skb_queue_len(&tsock->sk.sk_receive_queue);
1199 if (unlikely(recv_q_len > (OVERLOAD_LIMIT_BASE / 2))) { 1198 if (unlikely(recv_q_len >= (OVERLOAD_LIMIT_BASE / 2))) {
1200 if (queue_overloaded(recv_q_len, 1199 if (rx_queue_full(msg, recv_q_len, OVERLOAD_LIMIT_BASE / 2))
1201 OVERLOAD_LIMIT_BASE / 2, msg))
1202 return TIPC_ERR_OVERLOAD; 1200 return TIPC_ERR_OVERLOAD;
1203 } 1201 }
1204 1202