1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD$ 30255570Strasz */ 31255570Strasz 32255570Strasz#ifndef ICL_H 33255570Strasz#define ICL_H 34255570Strasz 35255570Strasz/* 36255570Strasz * iSCSI Common Layer. It's used by both the initiator and target to send 37255570Strasz * and receive iSCSI PDUs. 38255570Strasz */ 39255570Strasz 40277963Strasz#include <sys/types.h> 41277963Strasz#include <sys/kobj.h> 42277963Strasz#include <sys/condvar.h> 43277963Strasz#include <sys/sysctl.h> 44277963Strasz 45277963StraszSYSCTL_DECL(_kern_icl); 46277963Strasz 47277963Straszextern int icl_debug; 48277963Strasz 49277963Strasz#define ICL_DEBUG(X, ...) \ 50277963Strasz do { \ 51277963Strasz if (icl_debug > 1) \ 52277963Strasz printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 53277963Strasz } while (0) 54277963Strasz 55277963Strasz#define ICL_WARN(X, ...) \ 56277963Strasz do { \ 57277963Strasz if (icl_debug > 0) { \ 58277963Strasz printf("WARNING: %s: " X "\n", \ 59277963Strasz __func__, ## __VA_ARGS__); \ 60277963Strasz } \ 61277963Strasz } while (0) 62277963Strasz 63255570Straszstruct icl_conn; 64277963Straszstruct ccb_scsiio; 65277963Straszunion ctl_io; 66255570Strasz 67255570Straszstruct icl_pdu { 68264109Strasz STAILQ_ENTRY(icl_pdu) ip_next; 69255570Strasz struct icl_conn *ip_conn; 70255570Strasz struct iscsi_bhs *ip_bhs; 71255570Strasz struct mbuf *ip_bhs_mbuf; 72255570Strasz size_t ip_ahs_len; 73255570Strasz struct mbuf *ip_ahs_mbuf; 74255570Strasz size_t ip_data_len; 75255570Strasz struct mbuf *ip_data_mbuf; 76255570Strasz 77255570Strasz /* 78255570Strasz * User (initiator or provider) private fields. 79255570Strasz */ 80255570Strasz uint32_t ip_prv0; 81255570Strasz uint32_t ip_prv1; 82255570Strasz uint32_t ip_prv2; 83255570Strasz}; 84255570Strasz 85255570Strasz#define ICL_CONN_STATE_INVALID 0 86255570Strasz#define ICL_CONN_STATE_BHS 1 87255570Strasz#define ICL_CONN_STATE_AHS 2 88255570Strasz#define ICL_CONN_STATE_HEADER_DIGEST 3 89255570Strasz#define ICL_CONN_STATE_DATA 4 90255570Strasz#define ICL_CONN_STATE_DATA_DIGEST 5 91255570Strasz 92255570Strasz#define ICL_MAX_DATA_SEGMENT_LENGTH (128 * 1024) 93255570Strasz 94255570Straszstruct icl_conn { 95277963Strasz KOBJ_FIELDS; 96264022Strasz struct mtx *ic_lock; 97255570Strasz struct socket *ic_socket; 98263743Strasz#ifdef DIAGNOSTIC 99255570Strasz volatile u_int ic_outstanding_pdus; 100263743Strasz#endif 101264109Strasz STAILQ_HEAD(, icl_pdu) ic_to_send; 102264122Strasz bool ic_check_send_space; 103255570Strasz size_t ic_receive_len; 104255570Strasz int ic_receive_state; 105255570Strasz struct icl_pdu *ic_receive_pdu; 106255570Strasz struct cv ic_send_cv; 107255570Strasz struct cv ic_receive_cv; 108255570Strasz bool ic_header_crc32c; 109255570Strasz bool ic_data_crc32c; 110255570Strasz bool ic_send_running; 111255570Strasz bool ic_receive_running; 112255570Strasz size_t ic_max_data_segment_length; 113300368Strasz size_t ic_maxtags; 114255570Strasz bool ic_disconnecting; 115255570Strasz bool ic_iser; 116300369Strasz bool ic_unmapped; 117264023Strasz const char *ic_name; 118278232Strasz const char *ic_offload; 119255570Strasz 120255570Strasz void (*ic_receive)(struct icl_pdu *); 121255570Strasz void (*ic_error)(struct icl_conn *); 122255570Strasz 123255570Strasz /* 124255570Strasz * User (initiator or provider) private fields. 125255570Strasz */ 126255570Strasz void *ic_prv0; 127255570Strasz}; 128255570Strasz 129300592Straszstruct icl_conn *icl_new_conn(const char *offload, bool iser, const char *name, 130277963Strasz struct mtx *lock); 131300592Straszint icl_limits(const char *offload, bool iser, size_t *limitp); 132255570Strasz 133300592Straszint icl_register(const char *offload, bool iser, int priority, 134277963Strasz int (*limits)(size_t *), 135277963Strasz struct icl_conn *(*new_conn)(const char *, struct mtx *)); 136300592Straszint icl_unregister(const char *offload, bool rdma); 137277963Strasz 138255570Strasz#ifdef ICL_KERNEL_PROXY 139255570Strasz 140255570Straszstruct sockaddr; 141255570Straszstruct icl_listen; 142255570Strasz 143255570Strasz/* 144255570Strasz * Target part. 145255570Strasz */ 146264530Straszstruct icl_listen *icl_listen_new(void (*accept_cb)(struct socket *, 147264530Strasz struct sockaddr *, int)); 148255570Straszvoid icl_listen_free(struct icl_listen *il); 149264526Straszint icl_listen_add(struct icl_listen *il, bool rdma, 150264526Strasz int domain, int socktype, int protocol, 151264526Strasz struct sockaddr *sa, int portal_id); 152255570Straszint icl_listen_remove(struct icl_listen *il, struct sockaddr *sa); 153255570Strasz 154255570Strasz/* 155300061Strasz * Those two are not a public API; only to be used between icl_soft.c 156300061Strasz * and icl_soft_proxy.c. 157255570Strasz */ 158300044Straszint icl_soft_handoff_sock(struct icl_conn *ic, struct socket *so); 159300044Straszint icl_soft_proxy_connect(struct icl_conn *ic, int domain, 160300044Strasz int socktype, int protocol, struct sockaddr *from_sa, 161300044Strasz struct sockaddr *to_sa); 162255570Strasz#endif /* ICL_KERNEL_PROXY */ 163255570Strasz#endif /* !ICL_H */ 164