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IB/iser: Have iSER data transaction object point to iSER conn

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iSER uses a data transaction object (struct iser_dto) as part
of its IB data descriptors (struct iser_desc) management.
It also uses a hierarchy of connection structures pointing to
each other. A DTO may exist even after the iscsi_iser connection
pointed by it is destroyed (eg one that is bound to a post
receive buffer which was flushed by the IB HW). Hence DTOs need
point to the lowest connection, which is struct iser_conn.

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Erez Zilber
2006-09-27 15:27:10 +03:00
committed by Roland Dreier
parent ee30cb5b0b
commit 87e8df7a27
4 changed files with 14 additions and 9 deletions
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11
drivers/infiniband/ulp/iser/iser_initiator.c
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@@ -249,7 +249,7 @@ static int iser_post_receive_control(struct iscsi_conn *conn)
}
recv_dto = &rx_desc->dto;
recv_dto->conn = iser_conn;
recv_dto->ib_conn = iser_conn->ib_conn;
recv_dto->regd_vector_len = 0;
regd_hdr = &rx_desc->hdr_regd_buf;
@@ -296,7 +296,7 @@ static void iser_create_send_desc(struct iscsi_iser_conn *iser_conn,
regd_hdr->virt_addr = tx_desc; /* == &tx_desc->iser_header */
regd_hdr->data_size = ISER_TOTAL_HEADERS_LEN;
send_dto->conn = iser_conn;
send_dto->ib_conn = iser_conn->ib_conn;
send_dto->notify_enable = 1;
send_dto->regd_vector_len = 0;
@@ -588,7 +588,7 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
unsigned long dto_xfer_len)
{
struct iser_dto *dto = &rx_desc->dto;
struct iscsi_iser_conn *conn = dto->conn;
struct iscsi_iser_conn *conn = dto->ib_conn->iser_conn;
struct iscsi_session *session = conn->iscsi_conn->session;
struct iscsi_cmd_task *ctask;
struct iscsi_iser_cmd_task *iser_ctask;
@@ -641,7 +641,8 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
void iser_snd_completion(struct iser_desc *tx_desc)
{
struct iser_dto *dto = &tx_desc->dto;
struct iscsi_iser_conn *iser_conn = dto->conn;
struct iser_conn *ib_conn = dto->ib_conn;
struct iscsi_iser_conn *iser_conn = ib_conn->iser_conn;
struct iscsi_conn *conn = iser_conn->iscsi_conn;
struct iscsi_mgmt_task *mtask;
@@ -652,7 +653,7 @@ void iser_snd_completion(struct iser_desc *tx_desc)
if (tx_desc->type == ISCSI_TX_DATAOUT)
kmem_cache_free(ig.desc_cache, tx_desc);
atomic_dec(&iser_conn->ib_conn->post_send_buf_count);
atomic_dec(&ib_conn->post_send_buf_count);
write_lock(conn->recv_lock);
if (conn->suspend_tx) {