}
/**
- * iscsi_data_rsp - SCSI Data-In Response processing
+ * iscsi_data_in - SCSI Data-In Response processing
* @conn: iscsi connection
* @task: scsi command task
**/
static int
-iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
+iscsi_data_in(struct iscsi_conn *conn, struct iscsi_task *task)
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct iscsi_tcp_task *tcp_task = task->dd_data;
struct iscsi_data_rsp *rhdr = (struct iscsi_data_rsp *)tcp_conn->in.hdr;
- struct iscsi_session *session = conn->session;
- struct scsi_cmnd *sc = task->sc;
int datasn = be32_to_cpu(rhdr->datasn);
- unsigned total_in_length = scsi_in(sc)->length;
+ unsigned total_in_length = scsi_in(task->sc)->length;
- iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
+ iscsi_update_cmdsn(conn->session, (struct iscsi_nopin*)rhdr);
if (tcp_conn->in.datalen == 0)
return 0;
if (tcp_task->exp_datasn != datasn) {
debug_tcp("%s: task->exp_datasn(%d) != rhdr->datasn(%d)\n",
- __FUNCTION__, tcp_task->exp_datasn, datasn);
+ __func__, tcp_task->exp_datasn, datasn);
return ISCSI_ERR_DATASN;
}
tcp_task->data_offset = be32_to_cpu(rhdr->offset);
if (tcp_task->data_offset + tcp_conn->in.datalen > total_in_length) {
debug_tcp("%s: data_offset(%d) + data_len(%d) > total_length_in(%d)\n",
- __FUNCTION__, tcp_task->data_offset,
+ __func__, tcp_task->data_offset,
tcp_conn->in.datalen, total_in_length);
return ISCSI_ERR_DATA_OFFSET;
}
- if (rhdr->flags & ISCSI_FLAG_DATA_STATUS) {
- sc->result = (DID_OK << 16) | rhdr->cmd_status;
- conn->exp_statsn = be32_to_cpu(rhdr->statsn) + 1;
- if (rhdr->flags & (ISCSI_FLAG_DATA_UNDERFLOW |
- ISCSI_FLAG_DATA_OVERFLOW)) {
- int res_count = be32_to_cpu(rhdr->residual_count);
-
- if (res_count > 0 &&
- (rhdr->flags & ISCSI_FLAG_CMD_OVERFLOW ||
- res_count <= total_in_length))
- scsi_in(sc)->resid = res_count;
- else
- sc->result = (DID_BAD_TARGET << 16) |
- rhdr->cmd_status;
- }
- }
-
conn->datain_pdus_cnt++;
return 0;
}
if (tcp_task->exp_datasn != r2tsn){
debug_tcp("%s: task->exp_datasn(%d) != rhdr->r2tsn(%d)\n",
- __FUNCTION__, tcp_task->exp_datasn, r2tsn);
+ __func__, tcp_task->exp_datasn, r2tsn);
return ISCSI_ERR_R2TSN;
}
iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
{
int rc = 0, opcode, ahslen;
- struct iscsi_session *session = conn->session;
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct iscsi_task *task;
switch(opcode) {
case ISCSI_OP_SCSI_DATA_IN:
+ spin_lock(&conn->session->lock);
task = iscsi_itt_to_ctask(conn, hdr->itt);
if (!task)
- return ISCSI_ERR_BAD_ITT;
- if (!task->sc)
- return ISCSI_ERR_NO_SCSI_CMD;
+ rc = ISCSI_ERR_BAD_ITT;
+ else
+ rc = iscsi_data_in(conn, task);
+ if (rc) {
+ spin_unlock(&conn->session->lock);
+ break;
+ }
- spin_lock(&conn->session->lock);
- rc = iscsi_data_rsp(conn, task);
- spin_unlock(&conn->session->lock);
- if (rc)
- return rc;
if (tcp_conn->in.datalen) {
struct iscsi_tcp_task *tcp_task = task->dd_data;
struct hash_desc *rx_hash = NULL;
"datalen=%d)\n", tcp_conn,
tcp_task->data_offset,
tcp_conn->in.datalen);
- return iscsi_segment_seek_sg(&tcp_conn->in.segment,
- sdb->table.sgl,
- sdb->table.nents,
- tcp_task->data_offset,
- tcp_conn->in.datalen,
- iscsi_tcp_process_data_in,
- rx_hash);
+ rc = iscsi_segment_seek_sg(&tcp_conn->in.segment,
+ sdb->table.sgl,
+ sdb->table.nents,
+ tcp_task->data_offset,
+ tcp_conn->in.datalen,
+ iscsi_tcp_process_data_in,
+ rx_hash);
+ spin_unlock(&conn->session->lock);
+ return rc;
}
- /* fall through */
+ rc = __iscsi_complete_pdu(conn, hdr, NULL, 0);
+ spin_unlock(&conn->session->lock);
+ break;
case ISCSI_OP_SCSI_CMD_RSP:
if (tcp_conn->in.datalen) {
iscsi_tcp_data_recv_prep(tcp_conn);
rc = iscsi_complete_pdu(conn, hdr, NULL, 0);
break;
case ISCSI_OP_R2T:
+ spin_lock(&conn->session->lock);
task = iscsi_itt_to_ctask(conn, hdr->itt);
if (!task)
- return ISCSI_ERR_BAD_ITT;
- if (!task->sc)
- return ISCSI_ERR_NO_SCSI_CMD;
-
- if (ahslen)
+ rc = ISCSI_ERR_BAD_ITT;
+ else if (ahslen)
rc = ISCSI_ERR_AHSLEN;
- else if (task->sc->sc_data_direction == DMA_TO_DEVICE) {
- spin_lock(&session->lock);
+ else if (task->sc->sc_data_direction == DMA_TO_DEVICE)
rc = iscsi_r2t_rsp(conn, task);
- spin_unlock(&session->lock);
- } else
+ else
rc = ISCSI_ERR_PROTO;
+ spin_unlock(&conn->session->lock);
break;
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_TEXT_RSP:
error:
debug_tcp("Error receiving PDU, errno=%d\n", rc);
- iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+ iscsi_conn_failure(conn, rc);
return 0;
}
while (1) {
rc = iscsi_tcp_xmit_segment(tcp_conn, segment);
- if (rc < 0)
+ if (rc < 0) {
+ rc = ISCSI_ERR_XMIT_FAILED;
goto error;
+ }
if (rc == 0)
break;
if (segment->total_copied >= segment->total_size) {
if (segment->done != NULL) {
rc = segment->done(tcp_conn, segment);
- if (rc < 0)
+ if (rc != 0)
goto error;
}
}
/* Transmit error. We could initiate error recovery
* here. */
debug_tcp("Error sending PDU, errno=%d\n", rc);
- iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
- return rc;
+ iscsi_conn_failure(conn, rc);
+ return -EIO;
}
/**
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
- debug_tcp("%s(%p%s)\n", __FUNCTION__, tcp_conn,
+ debug_tcp("%s(%p%s)\n", __func__, tcp_conn,
conn->hdrdgst_en? ", digest enabled" : "");
/* Clear the data segment - needs to be filled in by the
struct hash_desc *tx_hash = NULL;
unsigned int hdr_spec_len;
- debug_tcp("%s(%p, offset=%d, datalen=%d%s)\n", __FUNCTION__,
+ debug_tcp("%s(%p, offset=%d, datalen=%d%s)\n", __func__,
tcp_conn, offset, len,
conn->datadgst_en? ", digest enabled" : "");
struct hash_desc *tx_hash = NULL;
unsigned int hdr_spec_len;
- debug_tcp("%s(%p, datalen=%d%s)\n", __FUNCTION__, tcp_conn, len,
+ debug_tcp("%s(%p, datalen=%d%s)\n", __func__, tcp_conn, len,
conn->datadgst_en? ", digest enabled" : "");
/* Make sure the datalen matches what the caller
spin_lock_bh(&session->lock);
tcp_conn->sock = NULL;
- conn->recv_lock = NULL;
spin_unlock_bh(&session->lock);
sockfd_put(sock);
}
iscsi_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
{
struct iscsi_conn *conn = cls_conn->dd_data;
+ struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+
+ /* userspace may have goofed up and not bound us */
+ if (!tcp_conn->sock)
+ return;
+ /*
+ * Make sure our recv side is stopped.
+ * Older tools called conn stop before ep_disconnect
+ * so IO could still be coming in.
+ */
+ write_lock_bh(&tcp_conn->sock->sk->sk_callback_lock);
+ set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
+ write_unlock_bh(&tcp_conn->sock->sk->sk_callback_lock);
iscsi_conn_stop(cls_conn, flag);
iscsi_tcp_release_conn(conn);
case AF_INET:
sin = (struct sockaddr_in *)addr;
spin_lock_bh(&conn->session->lock);
- sprintf(buf, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr));
+ sprintf(buf, "%pI4", &sin->sin_addr.s_addr);
*port = be16_to_cpu(sin->sin_port);
spin_unlock_bh(&conn->session->lock);
break;
case AF_INET6:
sin6 = (struct sockaddr_in6 *)addr;
spin_lock_bh(&conn->session->lock);
- sprintf(buf, NIP6_FMT, NIP6(sin6->sin6_addr));
+ sprintf(buf, "%pI6", &sin6->sin6_addr);
*port = be16_to_cpu(sin6->sin6_port);
spin_unlock_bh(&conn->session->lock);
break;
sk->sk_sndtimeo = 15 * HZ; /* FIXME: make it configurable */
sk->sk_allocation = GFP_ATOMIC;
- /* FIXME: disable Nagle's algorithm */
-
- /*
- * Intercept TCP callbacks for sendfile like receive
- * processing.
- */
- conn->recv_lock = &sk->sk_callback_lock;
iscsi_conn_set_callbacks(conn);
tcp_conn->sendpage = tcp_conn->sock->ops->sendpage;
/*
}
static struct iscsi_cls_session *
-iscsi_tcp_session_create(struct Scsi_Host *shost, uint16_t cmds_max,
+iscsi_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
uint16_t qdepth, uint32_t initial_cmdsn,
uint32_t *hostno)
{
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
+ struct Scsi_Host *shost;
int cmd_i;
- if (shost) {
- printk(KERN_ERR "iscsi_tcp: invalid shost %d.\n",
- shost->host_no);
+ if (ep) {
+ printk(KERN_ERR "iscsi_tcp: invalid ep %p.\n", ep);
return NULL;
}
shost->max_lun = iscsi_max_lun;
shost->max_id = 0;
shost->max_channel = 0;
- shost->max_cmd_len = 16;
- shost->can_queue = cmds_max;
+ shost->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE;
if (iscsi_host_add(shost, NULL))
goto free_host;
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
iscsi_r2tpool_free(cls_session->dd_data);
+ iscsi_session_teardown(cls_session);
iscsi_host_remove(shost);
iscsi_host_free(shost);
.cmd_per_lun = ISCSI_DEF_CMD_PER_LUN,
.eh_abort_handler = iscsi_eh_abort,
.eh_device_reset_handler= iscsi_eh_device_reset,
- .eh_host_reset_handler = iscsi_eh_host_reset,
+ .eh_target_reset_handler= iscsi_eh_target_reset,
.use_clustering = DISABLE_CLUSTERING,
.slave_configure = iscsi_tcp_slave_configure,
.proc_name = "iscsi_tcp",
ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
ISCSI_LU_RESET_TMO |
- ISCSI_PING_TMO | ISCSI_RECV_TMO,
+ ISCSI_PING_TMO | ISCSI_RECV_TMO |
+ ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
.host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
ISCSI_HOST_INITIATOR_NAME |
ISCSI_HOST_NETDEV_NAME,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff