target/iscsi: Fold _decide_list_to_build into _build_pdu_and_seq_lists
Rename iscsit_build_pdu_and_seq_list to iscsit_do_build_pdu_and_seq_lists
Rename iscsit_do_build_list to iscsit_build_pdu_and_seq_lists
Move code from iscsit_decide_list_to_build into _seq_pdu_list.c, seems
a better fit.
Also update some comments in pdu/seq code for correctness and whitespace.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index a29a1bb..e9cc087 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1060,7 +1060,7 @@
*/
send_check_condition = 1;
} else {
- if (iscsit_decide_list_to_build(cmd, payload_length) < 0)
+ if (iscsit_build_pdu_and_seq_lists(cmd, payload_length) < 0)
return iscsit_add_reject_from_cmd(
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 1, buf, cmd);
diff --git a/drivers/target/iscsi/iscsi_target_seq_pdu_list.c b/drivers/target/iscsi/iscsi_target_seq_pdu_list.c
index d982765..7d0effa 100644
--- a/drivers/target/iscsi/iscsi_target_seq_pdu_list.c
+++ b/drivers/target/iscsi/iscsi_target_seq_pdu_list.c
@@ -24,6 +24,7 @@
#include "iscsi_target_core.h"
#include "iscsi_target_util.h"
+#include "iscsi_target_tpg.h"
#include "iscsi_target_seq_pdu_list.h"
#define OFFLOAD_BUF_SIZE 32768
@@ -287,10 +288,10 @@
/*
- * Builds PDU and/or Sequence list, called while DataSequenceInOrder=No
- * and DataPDUInOrder=No.
+ * Builds PDU and/or Sequence list, called while DataSequenceInOrder=No
+ * or DataPDUInOrder=No.
*/
-static int iscsit_build_pdu_and_seq_list(
+static int iscsit_do_build_pdu_and_seq_lists(
struct iscsi_cmd *cmd,
struct iscsi_build_list *bl)
{
@@ -493,19 +494,56 @@
return 0;
}
-/*
- * Only called while DataSequenceInOrder=No or DataPDUInOrder=No.
- */
-int iscsit_do_build_list(
+int iscsit_build_pdu_and_seq_lists(
struct iscsi_cmd *cmd,
- struct iscsi_build_list *bl)
+ u32 immediate_data_length)
{
+ struct iscsi_build_list bl;
u32 pdu_count = 0, seq_count = 1;
struct iscsi_conn *conn = cmd->conn;
struct iscsi_pdu *pdu = NULL;
struct iscsi_seq *seq = NULL;
- iscsit_determine_counts_for_list(cmd, bl, &seq_count, &pdu_count);
+ struct iscsi_session *sess = conn->sess;
+ struct iscsi_node_attrib *na;
+
+ /*
+ * Do nothing if no OOO shenanigans
+ */
+ if (sess->sess_ops->DataSequenceInOrder &&
+ sess->sess_ops->DataPDUInOrder)
+ return 0;
+
+ if (cmd->data_direction == DMA_NONE)
+ return 0;
+
+ na = iscsit_tpg_get_node_attrib(sess);
+ memset(&bl, 0, sizeof(struct iscsi_build_list));
+
+ if (cmd->data_direction == DMA_FROM_DEVICE) {
+ bl.data_direction = ISCSI_PDU_READ;
+ bl.type = PDULIST_NORMAL;
+ if (na->random_datain_pdu_offsets)
+ bl.randomize |= RANDOM_DATAIN_PDU_OFFSETS;
+ if (na->random_datain_seq_offsets)
+ bl.randomize |= RANDOM_DATAIN_SEQ_OFFSETS;
+ } else {
+ bl.data_direction = ISCSI_PDU_WRITE;
+ bl.immediate_data_length = immediate_data_length;
+ if (na->random_r2t_offsets)
+ bl.randomize |= RANDOM_R2T_OFFSETS;
+
+ if (!cmd->immediate_data && !cmd->unsolicited_data)
+ bl.type = PDULIST_NORMAL;
+ else if (cmd->immediate_data && !cmd->unsolicited_data)
+ bl.type = PDULIST_IMMEDIATE;
+ else if (!cmd->immediate_data && cmd->unsolicited_data)
+ bl.type = PDULIST_UNSOLICITED;
+ else if (cmd->immediate_data && cmd->unsolicited_data)
+ bl.type = PDULIST_IMMEDIATE_AND_UNSOLICITED;
+ }
+
+ iscsit_determine_counts_for_list(cmd, &bl, &seq_count, &pdu_count);
if (!conn->sess->sess_ops->DataSequenceInOrder) {
seq = kzalloc(seq_count * sizeof(struct iscsi_seq), GFP_ATOMIC);
@@ -528,7 +566,7 @@
cmd->pdu_count = pdu_count;
}
- return iscsit_build_pdu_and_seq_list(cmd, bl);
+ return iscsit_do_build_pdu_and_seq_lists(cmd, &bl);
}
struct iscsi_pdu *iscsit_get_pdu_holder(
diff --git a/drivers/target/iscsi/iscsi_target_seq_pdu_list.h b/drivers/target/iscsi/iscsi_target_seq_pdu_list.h
index 0d52a10..d5b1537 100644
--- a/drivers/target/iscsi/iscsi_target_seq_pdu_list.h
+++ b/drivers/target/iscsi/iscsi_target_seq_pdu_list.h
@@ -78,7 +78,7 @@
u32 xfer_len;
} ____cacheline_aligned;
-extern int iscsit_do_build_list(struct iscsi_cmd *, struct iscsi_build_list *);
+extern int iscsit_build_pdu_and_seq_lists(struct iscsi_cmd *, u32);
extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsi_cmd *, u32, u32);
extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsi_cmd *, struct iscsi_seq *);
extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsi_cmd *, u32, u32);
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 1f5a456..9cd9f30 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -176,51 +176,6 @@
return cmd;
}
-int iscsit_decide_list_to_build(
- struct iscsi_cmd *cmd,
- u32 immediate_data_length)
-{
- struct iscsi_build_list bl;
- struct iscsi_conn *conn = cmd->conn;
- struct iscsi_session *sess = conn->sess;
- struct iscsi_node_attrib *na;
-
- if (sess->sess_ops->DataSequenceInOrder &&
- sess->sess_ops->DataPDUInOrder)
- return 0;
-
- if (cmd->data_direction == DMA_NONE)
- return 0;
-
- na = iscsit_tpg_get_node_attrib(sess);
- memset(&bl, 0, sizeof(struct iscsi_build_list));
-
- if (cmd->data_direction == DMA_FROM_DEVICE) {
- bl.data_direction = ISCSI_PDU_READ;
- bl.type = PDULIST_NORMAL;
- if (na->random_datain_pdu_offsets)
- bl.randomize |= RANDOM_DATAIN_PDU_OFFSETS;
- if (na->random_datain_seq_offsets)
- bl.randomize |= RANDOM_DATAIN_SEQ_OFFSETS;
- } else {
- bl.data_direction = ISCSI_PDU_WRITE;
- bl.immediate_data_length = immediate_data_length;
- if (na->random_r2t_offsets)
- bl.randomize |= RANDOM_R2T_OFFSETS;
-
- if (!cmd->immediate_data && !cmd->unsolicited_data)
- bl.type = PDULIST_NORMAL;
- else if (cmd->immediate_data && !cmd->unsolicited_data)
- bl.type = PDULIST_IMMEDIATE;
- else if (!cmd->immediate_data && cmd->unsolicited_data)
- bl.type = PDULIST_UNSOLICITED;
- else if (cmd->immediate_data && cmd->unsolicited_data)
- bl.type = PDULIST_IMMEDIATE_AND_UNSOLICITED;
- }
-
- return iscsit_do_build_list(cmd, &bl);
-}
-
struct iscsi_seq *iscsit_get_seq_holder_for_datain(
struct iscsi_cmd *cmd,
u32 seq_send_order)
diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h
index df8dbdd..e1c729b 100644
--- a/drivers/target/iscsi/iscsi_target_util.h
+++ b/drivers/target/iscsi/iscsi_target_util.h
@@ -9,7 +9,6 @@
extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *);
extern void iscsit_free_r2ts_from_list(struct iscsi_cmd *);
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
-extern int iscsit_decide_list_to_build(struct iscsi_cmd *, u32);
extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32);
extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);