* See the file COPYING included with this distribution for more details.
*/
-#ifndef ISCSI_TCP_H
-#define ISCSI_TCP_H
+#ifndef ISCSI_SW_TCP_H
+#define ISCSI_SW_TCP_H
#include <scsi/libiscsi.h>
+#include <scsi/libiscsi_tcp.h>
-/* xmit state machine */
-#define XMSTATE_IDLE 0x0
-#define XMSTATE_CMD_HDR_INIT 0x1
-#define XMSTATE_CMD_HDR_XMIT 0x2
-#define XMSTATE_IMM_HDR 0x4
-#define XMSTATE_IMM_DATA 0x8
-#define XMSTATE_UNS_INIT 0x10
-#define XMSTATE_UNS_HDR 0x20
-#define XMSTATE_UNS_DATA 0x40
-#define XMSTATE_SOL_HDR 0x80
-#define XMSTATE_SOL_DATA 0x100
-#define XMSTATE_W_PAD 0x200
-#define XMSTATE_W_RESEND_PAD 0x400
-#define XMSTATE_W_RESEND_DATA_DIGEST 0x800
-#define XMSTATE_IMM_HDR_INIT 0x1000
-#define XMSTATE_SOL_HDR_INIT 0x2000
-
-#define ISCSI_SG_TABLESIZE SG_ALL
-#define ISCSI_TCP_MAX_CMD_LEN 16
-
-struct crypto_hash;
struct socket;
struct iscsi_tcp_conn;
-struct iscsi_chunk;
-
-typedef int iscsi_chunk_done_fn_t(struct iscsi_tcp_conn *,
- struct iscsi_chunk *);
-
-struct iscsi_chunk {
- unsigned char *data;
- unsigned int size;
- unsigned int copied;
- unsigned int total_size;
- unsigned int total_copied;
-
- struct hash_desc *hash;
- unsigned char recv_digest[ISCSI_DIGEST_SIZE];
- unsigned char digest[ISCSI_DIGEST_SIZE];
- unsigned int digest_len;
-
- struct scatterlist *sg;
- void *sg_mapped;
- unsigned int sg_offset;
- unsigned int sg_index;
- unsigned int sg_count;
-
- iscsi_chunk_done_fn_t *done;
-};
-
-/* Socket connection recieve helper */
-struct iscsi_tcp_recv {
- struct iscsi_hdr *hdr;
- struct iscsi_chunk chunk;
-
- /* Allocate buffer for BHS + AHS */
- uint32_t hdr_buf[64];
-
- /* copied and flipped values */
- int datalen;
-};
/* Socket connection send helper */
-struct iscsi_tcp_send {
+struct iscsi_sw_tcp_send {
struct iscsi_hdr *hdr;
- struct iscsi_chunk chunk;
- struct iscsi_chunk data_chunk;
-
- /* Allocate buffer for BHS + AHS */
- uint32_t hdr_buf[64];
+ struct iscsi_segment segment;
+ struct iscsi_segment data_segment;
};
-struct iscsi_tcp_conn {
+struct iscsi_sw_tcp_conn {
struct iscsi_conn *iscsi_conn;
struct socket *sock;
- int stop_stage; /* conn_stop() flag: *
- * stop to recover, *
- * stop to terminate */
- /* control data */
- struct iscsi_tcp_recv in; /* TCP receive context */
- struct iscsi_tcp_send out; /* TCP send context */
+ struct iscsi_sw_tcp_send out;
/* old values for socket callbacks */
void (*old_data_ready)(struct sock *, int);
void (*old_state_change)(struct sock *);
ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int);
};
-struct iscsi_buf {
- struct scatterlist sg;
- unsigned int sent;
- char use_sendmsg;
-};
-
-struct iscsi_data_task {
- struct iscsi_data hdr; /* PDU */
- char hdrext[ISCSI_DIGEST_SIZE];/* Header-Digest */
- struct iscsi_buf digestbuf; /* digest buffer */
- uint32_t digest; /* data digest */
-};
-
-struct iscsi_tcp_mgmt_task {
- struct iscsi_hdr hdr;
- char hdrext[ISCSI_DIGEST_SIZE]; /* Header-Digest */
- int xmstate; /* mgmt xmit progress */
- struct iscsi_buf headbuf; /* header buffer */
- struct iscsi_buf sendbuf; /* in progress buffer */
- int sent;
-};
-
-struct iscsi_r2t_info {
- __be32 ttt; /* copied from R2T */
- __be32 exp_statsn; /* copied from R2T */
- uint32_t data_length; /* copied from R2T */
- uint32_t data_offset; /* copied from R2T */
- struct iscsi_buf headbuf; /* Data-Out Header Buffer */
- struct iscsi_buf sendbuf; /* Data-Out in progress buffer*/
- int sent; /* R2T sequence progress */
- int data_count; /* DATA-Out payload progress */
- struct scatterlist *sg; /* per-R2T SG list */
- int solicit_datasn;
- struct iscsi_data_task dtask; /* which data task */
-};
-
-struct iscsi_tcp_cmd_task {
- struct iscsi_hdr_buff {
- struct iscsi_cmd cmd_hdr;
- char hdrextbuf[ISCSI_MAX_AHS_SIZE +
+struct iscsi_sw_tcp_hdrbuf {
+ struct iscsi_hdr hdrbuf;
+ char hdrextbuf[ISCSI_MAX_AHS_SIZE +
ISCSI_DIGEST_SIZE];
- } hdr;
- char pad[ISCSI_PAD_LEN];
- int pad_count; /* padded bytes */
- struct iscsi_buf headbuf; /* header buf (xmit) */
- struct iscsi_buf sendbuf; /* in progress buffer*/
- int xmstate; /* xmit xtate machine */
- int sent;
- struct scatterlist *sg; /* per-cmd SG list */
- struct scatterlist *bad_sg; /* assert statement */
- int sg_count; /* SG's to process */
- uint32_t exp_datasn; /* expected target's R2TSN/DataSN */
- int data_offset;
- struct iscsi_r2t_info *r2t; /* in progress R2T */
- struct iscsi_pool r2tpool;
- struct kfifo *r2tqueue;
- int digest_count;
- uint32_t immdigest; /* for imm data */
- struct iscsi_buf immbuf; /* for imm data digest */
- struct iscsi_data_task unsol_dtask; /* unsol data task */
};
-#endif /* ISCSI_H */
+#endif /* ISCSI_SW_TCP_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff