From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/rds/rdma_transport.c | 40 ++++++++++++++++++++++++++++++++++------
1 files changed, 34 insertions(+), 6 deletions(-)
diff --git a/kernel/net/rds/rdma_transport.c b/kernel/net/rds/rdma_transport.c
index 6b0f57c..bb38124 100644
--- a/kernel/net/rds/rdma_transport.c
+++ b/kernel/net/rds/rdma_transport.c
@@ -43,6 +43,9 @@
static struct rdma_cm_id *rds6_rdma_listen_id;
#endif
+/* Per IB specification 7.7.3, service level is a 4-bit field. */
+#define TOS_TO_SL(tos) ((tos) & 0xF)
+
static int rds_rdma_cm_event_handler_cmn(struct rdma_cm_id *cm_id,
struct rdma_cm_event *event,
bool isv6)
@@ -51,6 +54,8 @@
struct rds_connection *conn = cm_id->context;
struct rds_transport *trans;
int ret = 0;
+ int *err;
+ u8 len;
rdsdebug("conn %p id %p handling event %u (%s)\n", conn, cm_id,
event->event, rdma_event_msg(event->event));
@@ -81,9 +86,12 @@
break;
case RDMA_CM_EVENT_ADDR_RESOLVED:
- /* XXX do we need to clean up if this fails? */
- ret = rdma_resolve_route(cm_id,
+ if (conn) {
+ rdma_set_service_type(cm_id, conn->c_tos);
+ /* XXX do we need to clean up if this fails? */
+ ret = rdma_resolve_route(cm_id,
RDS_RDMA_RESOLVE_TIMEOUT_MS);
+ }
break;
case RDMA_CM_EVENT_ROUTE_RESOLVED:
@@ -94,21 +102,39 @@
struct rds_ib_connection *ibic;
ibic = conn->c_transport_data;
- if (ibic && ibic->i_cm_id == cm_id)
+ if (ibic && ibic->i_cm_id == cm_id) {
+ cm_id->route.path_rec[0].sl =
+ TOS_TO_SL(conn->c_tos);
ret = trans->cm_initiate_connect(cm_id, isv6);
- else
+ } else {
rds_conn_drop(conn);
+ }
}
break;
case RDMA_CM_EVENT_ESTABLISHED:
- trans->cm_connect_complete(conn, event);
+ if (conn)
+ trans->cm_connect_complete(conn, event);
break;
case RDMA_CM_EVENT_REJECTED:
+ if (!conn)
+ break;
+ err = (int *)rdma_consumer_reject_data(cm_id, event, &len);
+ if (!err ||
+ (err && len >= sizeof(*err) &&
+ ((*err) <= RDS_RDMA_REJ_INCOMPAT))) {
+ pr_warn("RDS/RDMA: conn <%pI6c, %pI6c> rejected, dropping connection\n",
+ &conn->c_laddr, &conn->c_faddr);
+
+ if (!conn->c_tos)
+ conn->c_proposed_version = RDS_PROTOCOL_COMPAT_VERSION;
+
+ rds_conn_drop(conn);
+ }
rdsdebug("Connection rejected: %s\n",
rdma_reject_msg(cm_id, event->status));
- /* FALLTHROUGH */
+ break;
case RDMA_CM_EVENT_ADDR_ERROR:
case RDMA_CM_EVENT_ROUTE_ERROR:
case RDMA_CM_EVENT_CONNECT_ERROR:
@@ -120,6 +146,8 @@
break;
case RDMA_CM_EVENT_DISCONNECTED:
+ if (!conn)
+ break;
rdsdebug("DISCONNECT event - dropping connection "
"%pI6c->%pI6c\n", &conn->c_laddr,
&conn->c_faddr);
--
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