[PATCH net 4/7] qed: Free previous connections when releasing iSCSI

[Yuval Mintz]

Fixes: fc831825f99e ("qed: Add support for hardware offloaded iSCSI")
Signed-off-by: Yuval Mintz <yuval.mi...@cavium.com>
---
 drivers/net/ethernet/qlogic/qed/qed_iscsi.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_iscsi.c 
b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c
index 3a44d6b..7e73b05 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_iscsi.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c
@@ -786,6 +786,23 @@ static void qed_iscsi_release_connection(struct qed_hwfn 
*p_hwfn,
        spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
 }
 
+void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
+                              struct qed_iscsi_conn *p_conn)
+{
+       qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
+       qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
+       qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
+       dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+                         sizeof(struct tcp_upload_params),
+                         p_conn->tcp_upload_params_virt_addr,
+                         p_conn->tcp_upload_params_phys_addr);
+       dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+                         sizeof(struct scsi_terminate_extra_params),
+                         p_conn->queue_cnts_virt_addr,
+                         p_conn->queue_cnts_phys_addr);
+       kfree(p_conn);
+}
+
 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
 {
        struct qed_iscsi_info *p_iscsi_info;
@@ -807,6 +824,17 @@ void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
 void qed_iscsi_free(struct qed_hwfn *p_hwfn,
                    struct qed_iscsi_info *p_iscsi_info)
 {
+       struct qed_iscsi_conn *p_conn = NULL;
+
+       while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
+               p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
+                                         struct qed_iscsi_conn, list_entry);
+               if (p_conn) {
+                       list_del(&p_conn->list_entry);
+                       qed_iscsi_free_connection(p_hwfn, p_conn);
+               }
+       }
+
        kfree(p_iscsi_info);
 }
 
-- 
1.9.3