250 lines
6.1 KiB
C
250 lines
6.1 KiB
C
/**************************************************************************
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Copyright (c) 2007, 2008 Chelsio Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the Chelsio Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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$FreeBSD$
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***************************************************************************/
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#ifndef _IWCH_CM_H_
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#define _IWCH_CM_H_
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#include <contrib/rdma/ib_verbs.h>
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#include <contrib/rdma/iw_cm.h>
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#include <sys/refcount.h>
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#include <sys/condvar.h>
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#include <sys/proc.h>
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#define MPA_KEY_REQ "MPA ID Req Frame"
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#define MPA_KEY_REP "MPA ID Rep Frame"
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#define MPA_MAX_PRIVATE_DATA 256
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#define MPA_REV o0 /* XXX - amso1100 uses rev 0 ! */
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#define MPA_REJECT 0x20
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#define MPA_CRC 0x40
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#define MPA_MARKERS 0x80
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#define MPA_FLAGS_MASK 0xE0
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#define put_ep(ep) { \
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CTR4(KTR_IW_CXGB, "put_ep (via %s:%u) ep %p refcnt %d\n", __FUNCTION__, __LINE__, \
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ep, atomic_load_acq_int(&((ep)->refcount))); \
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if (refcount_release(&((ep)->refcount))) \
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__free_ep(ep); \
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}
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#define get_ep(ep) { \
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CTR4(KTR_IW_CXGB, "get_ep (via %s:%u) ep %p, refcnt %d\n", __FUNCTION__, __LINE__, \
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ep, atomic_load_acq_int(&((ep)->refcount))); \
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refcount_acquire(&((ep)->refcount)); \
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}
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struct mpa_message {
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u8 key[16];
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u8 flags;
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u8 revision;
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__be16 private_data_size;
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u8 private_data[0];
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};
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struct terminate_message {
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u8 layer_etype;
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u8 ecode;
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__be16 hdrct_rsvd;
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u8 len_hdrs[0];
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};
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#define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)
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enum iwch_layers_types {
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LAYER_RDMAP = 0x00,
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LAYER_DDP = 0x10,
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LAYER_MPA = 0x20,
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RDMAP_LOCAL_CATA = 0x00,
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RDMAP_REMOTE_PROT = 0x01,
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RDMAP_REMOTE_OP = 0x02,
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DDP_LOCAL_CATA = 0x00,
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DDP_TAGGED_ERR = 0x01,
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DDP_UNTAGGED_ERR = 0x02,
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DDP_LLP = 0x03
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};
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enum iwch_rdma_ecodes {
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RDMAP_INV_STAG = 0x00,
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RDMAP_BASE_BOUNDS = 0x01,
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RDMAP_ACC_VIOL = 0x02,
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RDMAP_STAG_NOT_ASSOC = 0x03,
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RDMAP_TO_WRAP = 0x04,
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RDMAP_INV_VERS = 0x05,
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RDMAP_INV_OPCODE = 0x06,
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RDMAP_STREAM_CATA = 0x07,
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RDMAP_GLOBAL_CATA = 0x08,
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RDMAP_CANT_INV_STAG = 0x09,
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RDMAP_UNSPECIFIED = 0xff
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};
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enum iwch_ddp_ecodes {
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DDPT_INV_STAG = 0x00,
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DDPT_BASE_BOUNDS = 0x01,
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DDPT_STAG_NOT_ASSOC = 0x02,
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DDPT_TO_WRAP = 0x03,
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DDPT_INV_VERS = 0x04,
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DDPU_INV_QN = 0x01,
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DDPU_INV_MSN_NOBUF = 0x02,
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DDPU_INV_MSN_RANGE = 0x03,
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DDPU_INV_MO = 0x04,
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DDPU_MSG_TOOBIG = 0x05,
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DDPU_INV_VERS = 0x06
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};
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enum iwch_mpa_ecodes {
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MPA_CRC_ERR = 0x02,
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MPA_MARKER_ERR = 0x03
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};
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enum iwch_ep_state {
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IDLE = 0,
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LISTEN,
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CONNECTING,
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MPA_REQ_WAIT,
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MPA_REQ_SENT,
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MPA_REQ_RCVD,
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MPA_REP_SENT,
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FPDU_MODE,
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ABORTING,
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CLOSING,
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MORIBUND,
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DEAD,
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};
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enum iwch_ep_flags {
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PEER_ABORT_IN_PROGRESS = (1 << 0),
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ABORT_REQ_IN_PROGRESS = (1 << 1),
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};
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struct iwch_ep_common {
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TAILQ_ENTRY(iwch_ep_common) entry;
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struct iw_cm_id *cm_id;
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struct iwch_qp *qp;
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struct t3cdev *tdev;
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enum iwch_ep_state state;
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u_int refcount;
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struct cv waitq;
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struct mtx lock;
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struct sockaddr_in local_addr;
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struct sockaddr_in remote_addr;
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int rpl_err;
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int rpl_done;
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struct thread *thread;
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struct socket *so;
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};
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struct iwch_listen_ep {
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struct iwch_ep_common com;
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unsigned int stid;
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int backlog;
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};
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struct iwch_ep {
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struct iwch_ep_common com;
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struct iwch_ep *parent_ep;
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struct callout timer;
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unsigned int atid;
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u32 hwtid;
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u32 snd_seq;
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u32 rcv_seq;
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struct l2t_entry *l2t;
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struct rtentry *dst;
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struct mbuf *mpa_mbuf;
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struct iwch_mpa_attributes mpa_attr;
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unsigned int mpa_pkt_len;
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u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
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u8 tos;
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u16 emss;
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u16 plen;
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u32 ird;
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u32 ord;
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u32 flags;
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};
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static inline struct iwch_ep *to_ep(struct iw_cm_id *cm_id)
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{
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return cm_id->provider_data;
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}
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static inline struct iwch_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
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{
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return cm_id->provider_data;
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}
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static inline int compute_wscale(int win)
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{
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int wscale = 0;
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while (wscale < 14 && (65535<<wscale) < win)
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wscale++;
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return wscale;
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}
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static __inline void
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iwch_wait(struct cv *cv, struct mtx *lock, int *rpl_done)
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{
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mtx_lock(lock);
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if (!*rpl_done) {
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CTR0(KTR_IW_CXGB, "sleeping for rpl_done\n");
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cv_wait_unlock(cv, lock);
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}
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CTR1(KTR_IW_CXGB, "*rpl_done=%d\n", *rpl_done);
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}
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static __inline void
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iwch_wakeup(struct cv *cv, struct mtx *lock, int *rpl_done)
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{
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mtx_lock(lock);
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*rpl_done=1;
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CTR0(KTR_IW_CXGB, "wakeup for rpl_done\n");
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cv_broadcast(cv);
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mtx_unlock(lock);
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}
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/* CM prototypes */
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int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
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int iwch_create_listen(struct iw_cm_id *cm_id, int backlog);
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int iwch_destroy_listen(struct iw_cm_id *cm_id);
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int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
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int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
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int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, int flags);
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int iwch_quiesce_tid(struct iwch_ep *ep);
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int iwch_resume_tid(struct iwch_ep *ep);
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void __free_ep(struct iwch_ep_common *ep);
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void iwch_rearp(struct iwch_ep *ep);
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int iwch_ep_redirect(void *ctx, struct rtentry *old, struct rtentry *new, struct l2t_entry *l2t);
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int iwch_cm_init(void);
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void iwch_cm_term(void);
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#endif /* _IWCH_CM_H_ */
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