1009ea47eSEdward Tomasz Napierala /*- 2009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 3009ea47eSEdward Tomasz Napierala * All rights reserved. 4009ea47eSEdward Tomasz Napierala * 5009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 7009ea47eSEdward Tomasz Napierala * 8009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10009ea47eSEdward Tomasz Napierala * are met: 11009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16009ea47eSEdward Tomasz Napierala * 17009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 28009ea47eSEdward Tomasz Napierala * 29009ea47eSEdward Tomasz Napierala * $FreeBSD$ 30009ea47eSEdward Tomasz Napierala */ 31009ea47eSEdward Tomasz Napierala 32009ea47eSEdward Tomasz Napierala #ifndef ICL_H 33009ea47eSEdward Tomasz Napierala #define ICL_H 34009ea47eSEdward Tomasz Napierala 35009ea47eSEdward Tomasz Napierala /* 36009ea47eSEdward Tomasz Napierala * iSCSI Common Layer. It's used by both the initiator and target to send 37009ea47eSEdward Tomasz Napierala * and receive iSCSI PDUs. 38009ea47eSEdward Tomasz Napierala */ 39009ea47eSEdward Tomasz Napierala 40009ea47eSEdward Tomasz Napierala struct icl_conn; 41009ea47eSEdward Tomasz Napierala 42009ea47eSEdward Tomasz Napierala struct icl_pdu { 4316c158a5SEdward Tomasz Napierala STAILQ_ENTRY(icl_pdu) ip_next; 44009ea47eSEdward Tomasz Napierala struct icl_conn *ip_conn; 45009ea47eSEdward Tomasz Napierala struct iscsi_bhs *ip_bhs; 46009ea47eSEdward Tomasz Napierala struct mbuf *ip_bhs_mbuf; 47009ea47eSEdward Tomasz Napierala size_t ip_ahs_len; 48009ea47eSEdward Tomasz Napierala struct mbuf *ip_ahs_mbuf; 49009ea47eSEdward Tomasz Napierala size_t ip_data_len; 50009ea47eSEdward Tomasz Napierala struct mbuf *ip_data_mbuf; 51009ea47eSEdward Tomasz Napierala 52009ea47eSEdward Tomasz Napierala /* 53009ea47eSEdward Tomasz Napierala * User (initiator or provider) private fields. 54009ea47eSEdward Tomasz Napierala */ 55009ea47eSEdward Tomasz Napierala uint32_t ip_prv0; 56009ea47eSEdward Tomasz Napierala uint32_t ip_prv1; 57009ea47eSEdward Tomasz Napierala uint32_t ip_prv2; 58009ea47eSEdward Tomasz Napierala }; 59009ea47eSEdward Tomasz Napierala 60009ea47eSEdward Tomasz Napierala struct icl_pdu *icl_pdu_new_bhs(struct icl_conn *ic, int flags); 61009ea47eSEdward Tomasz Napierala size_t icl_pdu_data_segment_length(const struct icl_pdu *ip); 62009ea47eSEdward Tomasz Napierala int icl_pdu_append_data(struct icl_pdu *ip, const void *addr, size_t len, int flags); 63009ea47eSEdward Tomasz Napierala void icl_pdu_get_data(struct icl_pdu *ip, size_t off, void *addr, size_t len); 64009ea47eSEdward Tomasz Napierala void icl_pdu_queue(struct icl_pdu *ip); 65009ea47eSEdward Tomasz Napierala void icl_pdu_free(struct icl_pdu *ip); 66009ea47eSEdward Tomasz Napierala 67009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_INVALID 0 68009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_BHS 1 69009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_AHS 2 70009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_HEADER_DIGEST 3 71009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_DATA 4 72009ea47eSEdward Tomasz Napierala #define ICL_CONN_STATE_DATA_DIGEST 5 73009ea47eSEdward Tomasz Napierala 74009ea47eSEdward Tomasz Napierala #define ICL_MAX_DATA_SEGMENT_LENGTH (128 * 1024) 75009ea47eSEdward Tomasz Napierala 76009ea47eSEdward Tomasz Napierala struct icl_conn { 776ed8f5d2SEdward Tomasz Napierala struct mtx *ic_lock; 78009ea47eSEdward Tomasz Napierala struct socket *ic_socket; 79717f4815SEdward Tomasz Napierala #ifdef DIAGNOSTIC 80009ea47eSEdward Tomasz Napierala volatile u_int ic_outstanding_pdus; 81717f4815SEdward Tomasz Napierala #endif 8216c158a5SEdward Tomasz Napierala STAILQ_HEAD(, icl_pdu) ic_to_send; 83c485ab14SEdward Tomasz Napierala bool ic_check_send_space; 84009ea47eSEdward Tomasz Napierala size_t ic_receive_len; 85009ea47eSEdward Tomasz Napierala int ic_receive_state; 86009ea47eSEdward Tomasz Napierala struct icl_pdu *ic_receive_pdu; 87009ea47eSEdward Tomasz Napierala struct cv ic_send_cv; 88009ea47eSEdward Tomasz Napierala struct cv ic_receive_cv; 89009ea47eSEdward Tomasz Napierala bool ic_header_crc32c; 90009ea47eSEdward Tomasz Napierala bool ic_data_crc32c; 91009ea47eSEdward Tomasz Napierala bool ic_send_running; 92009ea47eSEdward Tomasz Napierala bool ic_receive_running; 93009ea47eSEdward Tomasz Napierala size_t ic_max_data_segment_length; 94009ea47eSEdward Tomasz Napierala bool ic_disconnecting; 95009ea47eSEdward Tomasz Napierala bool ic_iser; 96ecba49ddSEdward Tomasz Napierala const char *ic_name; 97009ea47eSEdward Tomasz Napierala 98009ea47eSEdward Tomasz Napierala void (*ic_receive)(struct icl_pdu *); 99009ea47eSEdward Tomasz Napierala void (*ic_error)(struct icl_conn *); 100009ea47eSEdward Tomasz Napierala 101009ea47eSEdward Tomasz Napierala /* 102009ea47eSEdward Tomasz Napierala * User (initiator or provider) private fields. 103009ea47eSEdward Tomasz Napierala */ 104009ea47eSEdward Tomasz Napierala void *ic_prv0; 105009ea47eSEdward Tomasz Napierala }; 106009ea47eSEdward Tomasz Napierala 107ecba49ddSEdward Tomasz Napierala struct icl_conn *icl_conn_new(const char *name, struct mtx *lock); 108009ea47eSEdward Tomasz Napierala void icl_conn_free(struct icl_conn *ic); 109009ea47eSEdward Tomasz Napierala int icl_conn_handoff(struct icl_conn *ic, int fd); 110009ea47eSEdward Tomasz Napierala void icl_conn_shutdown(struct icl_conn *ic); 111009ea47eSEdward Tomasz Napierala void icl_conn_close(struct icl_conn *ic); 112009ea47eSEdward Tomasz Napierala bool icl_conn_connected(struct icl_conn *ic); 113009ea47eSEdward Tomasz Napierala 114009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 115009ea47eSEdward Tomasz Napierala 116009ea47eSEdward Tomasz Napierala struct sockaddr; 117009ea47eSEdward Tomasz Napierala struct icl_listen; 118009ea47eSEdward Tomasz Napierala 119009ea47eSEdward Tomasz Napierala struct icl_listen_sock { 120009ea47eSEdward Tomasz Napierala TAILQ_ENTRY(icl_listen_sock) ils_next; 121009ea47eSEdward Tomasz Napierala struct icl_listen *ils_listen; 122009ea47eSEdward Tomasz Napierala struct socket *ils_socket; 123009ea47eSEdward Tomasz Napierala bool ils_running; 124009ea47eSEdward Tomasz Napierala bool ils_disconnecting; 1258cab2ed4SEdward Tomasz Napierala int ils_id; 126009ea47eSEdward Tomasz Napierala }; 127009ea47eSEdward Tomasz Napierala 128009ea47eSEdward Tomasz Napierala struct icl_listen { 129009ea47eSEdward Tomasz Napierala TAILQ_HEAD(, icl_listen_sock) il_sockets; 130009ea47eSEdward Tomasz Napierala struct sx il_lock; 1318cab2ed4SEdward Tomasz Napierala void (*il_accept)(struct socket *, int); 132009ea47eSEdward Tomasz Napierala }; 133009ea47eSEdward Tomasz Napierala 134009ea47eSEdward Tomasz Napierala /* 135009ea47eSEdward Tomasz Napierala * Initiator part. 136009ea47eSEdward Tomasz Napierala */ 137009ea47eSEdward Tomasz Napierala int icl_conn_connect(struct icl_conn *ic, bool rdma, 138009ea47eSEdward Tomasz Napierala int domain, int socktype, int protocol, 139009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, struct sockaddr *to_sa); 140009ea47eSEdward Tomasz Napierala /* 141009ea47eSEdward Tomasz Napierala * Target part. 142009ea47eSEdward Tomasz Napierala */ 1438cab2ed4SEdward Tomasz Napierala struct icl_listen *icl_listen_new(void (*accept_cb)(struct socket *, int)); 144009ea47eSEdward Tomasz Napierala void icl_listen_free(struct icl_listen *il); 1458cab2ed4SEdward Tomasz Napierala int icl_listen_add(struct icl_listen *il, bool rdma, 1468cab2ed4SEdward Tomasz Napierala int domain, int socktype, int protocol, 1478cab2ed4SEdward Tomasz Napierala struct sockaddr *sa, int portal_id); 148009ea47eSEdward Tomasz Napierala int icl_listen_remove(struct icl_listen *il, struct sockaddr *sa); 149009ea47eSEdward Tomasz Napierala 150009ea47eSEdward Tomasz Napierala /* 151009ea47eSEdward Tomasz Napierala * This one is not a public API; only to be used by icl_proxy.c. 152009ea47eSEdward Tomasz Napierala */ 153009ea47eSEdward Tomasz Napierala int icl_conn_handoff_sock(struct icl_conn *ic, struct socket *so); 154009ea47eSEdward Tomasz Napierala 155009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 156009ea47eSEdward Tomasz Napierala 157009ea47eSEdward Tomasz Napierala #endif /* !ICL_H */ 158