1 /*- 2 * Copyright (c) 2012, 2015 Chelsio Communications, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 30 #ifndef __CXGBEI_OFLD_H__ 31 #define __CXGBEI_OFLD_H__ 32 33 #include <dev/iscsi/icl.h> 34 35 #define CXGBEI_CONN_SIGNATURE 0x56788765 36 37 struct cxgbei_cmp { 38 LIST_ENTRY(cxgbei_cmp) link; 39 40 uint32_t tt; /* Transfer tag. */ 41 42 uint32_t next_buffer_offset; 43 uint32_t last_datasn; 44 }; 45 LIST_HEAD(cxgbei_cmp_head, cxgbei_cmp); 46 47 struct icl_cxgbei_conn { 48 struct icl_conn ic; 49 50 /* cxgbei specific stuff goes here. */ 51 uint32_t icc_signature; 52 int ulp_submode; 53 struct adapter *sc; 54 struct toepcb *toep; 55 56 /* Receive related. */ 57 bool rx_active; /* protected by so_rcv lock */ 58 bool rx_exiting; /* protected by so_rcv lock */ 59 STAILQ_HEAD(, icl_pdu) rcvd_pdus; /* protected by so_rcv lock */ 60 struct thread *rx_thread; 61 62 struct cxgbei_cmp_head *cmp_table; /* protected by cmp_lock */ 63 struct mtx cmp_lock; 64 unsigned long cmp_hash_mask; 65 66 /* Transmit related. */ 67 bool tx_active; /* protected by ic lock */ 68 STAILQ_HEAD(, icl_pdu) sent_pdus; /* protected by ic lock */ 69 struct thread *tx_thread; 70 }; 71 72 static inline struct icl_cxgbei_conn * 73 ic_to_icc(struct icl_conn *ic) 74 { 75 76 return (__containerof(ic, struct icl_cxgbei_conn, ic)); 77 } 78 79 /* PDU flags and signature. */ 80 enum { 81 ICPF_RX_HDR = 1 << 0, /* PDU header received. */ 82 ICPF_RX_FLBUF = 1 << 1, /* PDU payload received in a freelist. */ 83 ICPF_RX_DDP = 1 << 2, /* PDU payload DDP'd. */ 84 ICPF_RX_STATUS = 1 << 3, /* Rx status received. */ 85 86 CXGBEI_PDU_SIGNATURE = 0x12344321 87 }; 88 89 struct icl_cxgbei_pdu { 90 struct icl_pdu ip; 91 92 /* cxgbei specific stuff goes here. */ 93 uint32_t icp_signature; 94 uint32_t icp_seq; /* For debug only */ 95 u_int icp_flags; 96 97 u_int ref_cnt; 98 icl_pdu_cb cb; 99 int error; 100 }; 101 102 static inline struct icl_cxgbei_pdu * 103 ip_to_icp(struct icl_pdu *ip) 104 { 105 106 return (__containerof(ip, struct icl_cxgbei_pdu, ip)); 107 } 108 109 struct cxgbei_data { 110 u_int max_tx_data_len; 111 u_int max_rx_data_len; 112 113 u_int ddp_threshold; 114 struct ppod_region pr; 115 116 struct sysctl_ctx_list ctx; /* from uld_activate to deactivate */ 117 }; 118 119 #define CXGBEI_MAX_ISO_PAYLOAD 65535 120 121 /* cxgbei.c */ 122 u_int cxgbei_select_worker_thread(struct icl_cxgbei_conn *); 123 void cwt_queue_for_tx(struct icl_cxgbei_conn *); 124 void parse_pdus(struct icl_cxgbei_conn *, struct sockbuf *); 125 126 /* icl_cxgbei.c */ 127 void cwt_tx_main(void *); 128 int icl_cxgbei_mod_load(void); 129 int icl_cxgbei_mod_unload(void); 130 struct icl_pdu *icl_cxgbei_new_pdu(int); 131 void icl_cxgbei_new_pdu_set_conn(struct icl_pdu *, struct icl_conn *); 132 void icl_cxgbei_conn_pdu_free(struct icl_conn *, struct icl_pdu *); 133 struct cxgbei_cmp *cxgbei_find_cmp(struct icl_cxgbei_conn *, uint32_t); 134 135 #endif 136