修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/rds/rdma_transport.c
..
..
@@ -43,6 +43,9 @@
43
43
 static struct rdma_cm_id *rds6_rdma_listen_id;
44
44
 #endif
45
45
 
46
+/* Per IB specification 7.7.3, service level is a 4-bit field. */
47
+#define TOS_TO_SL(tos)		((tos) & 0xF)
48
+
46
49
 static int rds_rdma_cm_event_handler_cmn(struct rdma_cm_id *cm_id,
47
50
 					 struct rdma_cm_event *event,
48
51
 					 bool isv6)
..
..
@@ -51,6 +54,8 @@
51
54
 	struct rds_connection *conn = cm_id->context;
52
55
 	struct rds_transport *trans;
53
56
 	int ret = 0;
57
+	int *err;
58
+	u8 len;
54
59
 
55
60
 	rdsdebug("conn %p id %p handling event %u (%s)\n", conn, cm_id,
56
61
 		 event->event, rdma_event_msg(event->event));
..
..
@@ -81,9 +86,12 @@
81
86
 		break;
82
87
 
83
88
 	case RDMA_CM_EVENT_ADDR_RESOLVED:
84
-		/* XXX do we need to clean up if this fails? */
85
-		ret = rdma_resolve_route(cm_id,
89
+		if (conn) {
90
+			rdma_set_service_type(cm_id, conn->c_tos);
91
+			/* XXX do we need to clean up if this fails? */
92
+			ret = rdma_resolve_route(cm_id,
86
93
 					 RDS_RDMA_RESOLVE_TIMEOUT_MS);
94
+		}
87
95
 		break;
88
96
 
89
97
 	case RDMA_CM_EVENT_ROUTE_RESOLVED:
..
..
@@ -94,21 +102,39 @@
94
102
 			struct rds_ib_connection *ibic;
95
103
 
96
104
 			ibic = conn->c_transport_data;
97
-			if (ibic && ibic->i_cm_id == cm_id)
105
+			if (ibic && ibic->i_cm_id == cm_id) {
106
+				cm_id->route.path_rec[0].sl =
107
+					TOS_TO_SL(conn->c_tos);
98
108
 				ret = trans->cm_initiate_connect(cm_id, isv6);
99
-			else
109
+			} else {
100
110
 				rds_conn_drop(conn);
111
+			}
101
112
 		}
102
113
 		break;
103
114
 
104
115
 	case RDMA_CM_EVENT_ESTABLISHED:
105
-		trans->cm_connect_complete(conn, event);
116
+		if (conn)
117
+			trans->cm_connect_complete(conn, event);
106
118
 		break;
107
119
 
108
120
 	case RDMA_CM_EVENT_REJECTED:
121
+		if (!conn)
122
+			break;
123
+		err = (int *)rdma_consumer_reject_data(cm_id, event, &len);
124
+		if (!err ||
125
+		    (err && len >= sizeof(*err) &&
126
+		     ((*err) <= RDS_RDMA_REJ_INCOMPAT))) {
127
+			pr_warn("RDS/RDMA: conn <%pI6c, %pI6c> rejected, dropping connection\n",
128
+				&conn->c_laddr, &conn->c_faddr);
129
+
130
+			if (!conn->c_tos)
131
+				conn->c_proposed_version = RDS_PROTOCOL_COMPAT_VERSION;
132
+
133
+			rds_conn_drop(conn);
134
+		}
109
135
 		rdsdebug("Connection rejected: %s\n",
110
136
 			 rdma_reject_msg(cm_id, event->status));
111
-		/* FALLTHROUGH */
137
+		break;
112
138
 	case RDMA_CM_EVENT_ADDR_ERROR:
113
139
 	case RDMA_CM_EVENT_ROUTE_ERROR:
114
140
 	case RDMA_CM_EVENT_CONNECT_ERROR:
..
..
@@ -120,6 +146,8 @@
120
146
 		break;
121
147
 
122
148
 	case RDMA_CM_EVENT_DISCONNECTED:
149
+		if (!conn)
150
+			break;
123
151
 		rdsdebug("DISCONNECT event - dropping connection "
124
152
 			 "%pI6c->%pI6c\n", &conn->c_laddr,
125
153
 			 &conn->c_faddr);