diff options
Diffstat (limited to 'kernel/libiscsi_tcp.h')
| -rw-r--r-- | kernel/libiscsi_tcp.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/kernel/libiscsi_tcp.h b/kernel/libiscsi_tcp.h deleted file mode 100644 index dd5e61f..0000000 --- a/kernel/libiscsi_tcp.h +++ /dev/null @@ -1,133 +0,0 @@ -/* - * iSCSI over TCP/IP Data-Path lib - * - * Copyright (C) 2008 Mike Christie - * Copyright (C) 2008 Red Hat, Inc. All rights reserved. - * maintained by open-iscsi@googlegroups.com - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published - * by the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * See the file COPYING included with this distribution for more details. - */ - -#ifndef LIBISCSI_TCP_H -#define LIBISCSI_TCP_H - -#include "libiscsi.h" - -struct iscsi_tcp_conn; -struct iscsi_segment; -struct sk_buff; -struct hash_desc; - -typedef int iscsi_segment_done_fn_t(struct iscsi_tcp_conn *, - struct iscsi_segment *); - -struct iscsi_segment { - unsigned char *data; - unsigned int size; - unsigned int copied; - unsigned int total_size; - unsigned int total_copied; - - struct hash_desc *hash; - unsigned char padbuf[ISCSI_PAD_LEN]; - 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; - - iscsi_segment_done_fn_t *done; -}; - -/* Socket connection receive helper */ -struct iscsi_tcp_recv { - struct iscsi_hdr *hdr; - struct iscsi_segment segment; - - /* Allocate buffer for BHS + AHS */ - uint32_t hdr_buf[64]; - - /* copied and flipped values */ - int datalen; -}; - -struct iscsi_tcp_conn { - struct iscsi_conn *iscsi_conn; - void *dd_data; - int stop_stage; /* conn_stop() flag: * - * stop to recover, * - * stop to terminate */ - /* control data */ - struct iscsi_tcp_recv in; /* TCP receive context */ - /* CRC32C (Rx) LLD should set this is they do not offload */ - struct hash_desc *rx_hash; -}; - -struct iscsi_tcp_task { - uint32_t exp_datasn; /* expected target's R2TSN/DataSN */ - int data_offset; - struct iscsi_r2t_info *r2t; /* in progress solict R2T */ - struct iscsi_pool r2tpool; - struct kfifo r2tqueue; - void *dd_data; -}; - -enum { - ISCSI_TCP_SEGMENT_DONE, /* curr seg has been processed */ - ISCSI_TCP_SKB_DONE, /* skb is out of data */ - ISCSI_TCP_CONN_ERR, /* iscsi layer has fired a conn err */ - ISCSI_TCP_SUSPENDED, /* conn is suspended */ -}; - -extern void iscsi_tcp_hdr_recv_prep(struct iscsi_tcp_conn *tcp_conn); -extern int iscsi_tcp_recv_skb(struct iscsi_conn *conn, struct sk_buff *skb, - unsigned int offset, bool offloaded, int *status); -extern void iscsi_tcp_cleanup_task(struct iscsi_task *task); -extern int iscsi_tcp_task_init(struct iscsi_task *task); -extern int iscsi_tcp_task_xmit(struct iscsi_task *task); - -/* segment helpers */ -extern int iscsi_tcp_recv_segment_is_hdr(struct iscsi_tcp_conn *tcp_conn); -extern int iscsi_tcp_segment_done(struct iscsi_tcp_conn *tcp_conn, - struct iscsi_segment *segment, int recv, - unsigned copied); -extern void iscsi_tcp_segment_unmap(struct iscsi_segment *segment); - -extern void iscsi_segment_init_linear(struct iscsi_segment *segment, - void *data, size_t size, - iscsi_segment_done_fn_t *done, - struct hash_desc *hash); -extern int -iscsi_segment_seek_sg(struct iscsi_segment *segment, - struct scatterlist *sg_list, unsigned int sg_count, - unsigned int offset, size_t size, - iscsi_segment_done_fn_t *done, struct hash_desc *hash); - -/* digest helpers */ -extern void iscsi_tcp_dgst_header(struct hash_desc *hash, const void *hdr, - size_t hdrlen, - unsigned char digest[ISCSI_DIGEST_SIZE]); -extern struct iscsi_cls_conn * -iscsi_tcp_conn_setup(struct iscsi_cls_session *cls_session, int dd_data_size, - uint32_t conn_idx); -extern void iscsi_tcp_conn_teardown(struct iscsi_cls_conn *cls_conn); - -/* misc helpers */ -extern int iscsi_tcp_r2tpool_alloc(struct iscsi_session *session); -extern void iscsi_tcp_r2tpool_free(struct iscsi_session *session); - -extern void iscsi_tcp_conn_get_stats(struct iscsi_cls_conn *cls_conn, - struct iscsi_stats *stats); -#endif /* LIBISCSI_TCP_H */ |