Subject: [PATCH 36/46] rdma: clean up of qemu_rdma_cleanup()

From: Nigel Croxon <[email-masked]>
Date: Thu, 14 Nov 2013 22:53:12 +0100

RH-Author: Nigel Croxon <[email-masked]>
Message-id: <[email-masked]>
Patchwork-id: 55726
O-Subject: [RHEL7.0 PATCH 36/42] rdma: clean up of qemu_rdma_cleanup()
Bugzilla: 1011720
RH-Acked-by: Orit Wasserman <[email-masked]>
RH-Acked-by: Amit Shah <[email-masked]>
RH-Acked-by: Paolo Bonzini <[email-masked]>

Bugzilla: 1011720
https://bugzilla.redhat.com/show_bug.cgi?id=1011720

>From commit ID:
commit 5a91337cdf343b94474f8bbecab85a8c00f6d2a1
Author: Isaku Yamahata <[email-masked]>
Date:   Tue Aug 13 11:12:43 2013 +0900

    rdma: clean up of qemu_rdma_cleanup()

    - It can't be determined by RDMAContext::cm_id != NULL if the connection
      is established or not.
    - RDMAContext::cm_id is leaked and not destroyed because it is set to NULL
      too early.
    - RDMAContext::qp is created by rdma_create_qp() so that it should be destroyed
      by rdma_destroy_qp(). not ibv_destroy_qp()

    Cc: Michael R. Hines <[email-masked]>
    Signed-off-by: Isaku Yamahata <[email-masked]>
    Signed-off-by: Juan Quintela <[email-masked]>
---
 migration-rdma.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

Signed-off-by: Michal Novotny <[email-masked]>
---
 migration-rdma.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/migration-rdma.c b/migration-rdma.c
index 943496f..be3d984 100644
--- a/migration-rdma.c
+++ b/migration-rdma.c
@@ -356,6 +356,7 @@ typedef struct RDMAContext {
      */
     struct rdma_cm_id *cm_id;               /* connection manager ID */
     struct rdma_cm_id *listen_id;
+    bool connected;
 
     struct ibv_context          *verbs;
     struct rdma_event_channel   *channel;
@@ -2194,7 +2195,7 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
     struct rdma_cm_event *cm_event;
     int ret, idx;
 
-    if (rdma->cm_id) {
+    if (rdma->cm_id && rdma->connected) {
         if (rdma->error_state) {
             RDMAControlHeader head = { .len = 0,
                                        .type = RDMA_CONTROL_ERROR,
@@ -2213,7 +2214,7 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
             }
         }
         DDPRINTF("Disconnected.\n");
-        rdma->cm_id = NULL;
+        rdma->connected = false;
     }
 
     g_free(rdma->block);
@@ -2235,7 +2236,7 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
     }
 
     if (rdma->qp) {
-        ibv_destroy_qp(rdma->qp);
+        rdma_destroy_qp(rdma->cm_id);
         rdma->qp = NULL;
     }
     if (rdma->cq) {
@@ -2372,6 +2373,7 @@ static int qemu_rdma_connect(RDMAContext *rdma, Error **errp)
         rdma->cm_id = NULL;
         goto err_rdma_source_connect;
     }
+    rdma->connected = true;
 
     memcpy(&cap, cm_event->param.conn.private_data, sizeof(cap));
     network_to_caps(&cap);
@@ -2906,6 +2908,7 @@ static int qemu_rdma_accept(RDMAContext *rdma)
     }
 
     rdma_ack_cm_event(cm_event);
+    rdma->connected = true;
 
     ret = qemu_rdma_post_recv_control(rdma, RDMA_WRID_READY);
     if (ret) {
-- 
1.7.11.7