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Subject[Patch v4 09/22] CIFS: SMBD: Implement function to destroy a SMBDirect connection
Date
From: Long Li <longli@microsoft.com>

Add function to tear down a SMBDirect connection. This is used by upper layer
to free all SMBDirect connection and transport resources.

Signed-off-by: Long Li <longli@microsoft.com>
---
fs/cifs/smbdirect.c | 16 ++++++++++++++++
fs/cifs/smbdirect.h | 3 +++
2 files changed, 19 insertions(+)

diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index 1f0f33c..cb129c2 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1416,6 +1416,22 @@ static void idle_connection_timer(struct work_struct *work)
info->keep_alive_interval*HZ);
}

+/* Destroy this SMBD connection, called from upper layer */
+void smbd_destroy(struct smbd_connection *info)
+{
+ log_rdma_event(INFO, "destroying rdma session\n");
+
+ /* Kick off the disconnection process */
+ smbd_disconnect_rdma_connection(info);
+
+ log_rdma_event(INFO, "wait for transport being destroyed\n");
+ wait_event(info->wait_destroy,
+ info->transport_status == SMBD_DESTROYED);
+
+ destroy_workqueue(info->workqueue);
+ kfree(info);
+}
+
/*
* Reconnect this SMBD connection, called from upper layer
* return value: 0 on success, or actual error code
diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h
index 9818852..d14a484 100644
--- a/fs/cifs/smbdirect.h
+++ b/fs/cifs/smbdirect.h
@@ -252,6 +252,9 @@ struct smbd_connection *smbd_get_connection(
/* Reconnect SMBDirect session */
int smbd_reconnect(struct TCP_Server_Info *server);

+/* Destroy SMBDirect session */
+void smbd_destroy(struct smbd_connection *info);
+
void profiling_display_histogram(
struct seq_file *m, unsigned long long array[]);
#endif
--
2.7.4
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