b12c0a9eeb
handle_ddp_close() function in t4_ddp.c as the logic is similar to handle_ddp_data(). This allows all knowledge of the special DDP mbufs to be private to t4_ddp.c as well.
306 lines
10 KiB
C
306 lines
10 KiB
C
/*-
|
|
* Copyright (c) 2012 Chelsio Communications, Inc.
|
|
* All rights reserved.
|
|
* Written by: Navdeep Parhar <np@FreeBSD.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#ifndef __T4_TOM_H__
|
|
#define __T4_TOM_H__
|
|
#include <sys/vmem.h>
|
|
|
|
#define LISTEN_HASH_SIZE 32
|
|
|
|
/*
|
|
* Min receive window. We want it to be large enough to accommodate receive
|
|
* coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
|
|
*/
|
|
#define MIN_RCV_WND (24 * 1024U)
|
|
|
|
/*
|
|
* Max receive window supported by HW in bytes. Only a small part of it can
|
|
* be set through option0, the rest needs to be set through RX_DATA_ACK.
|
|
*/
|
|
#define MAX_RCV_WND ((1U << 27) - 1)
|
|
|
|
#define DDP_RSVD_WIN (16 * 1024U)
|
|
#define SB_DDP_INDICATE SB_IN_TOE /* soreceive must respond to indicate */
|
|
|
|
#define USE_DDP_RX_FLOW_CONTROL
|
|
|
|
/* TOE PCB flags */
|
|
enum {
|
|
TPF_ATTACHED = (1 << 0), /* a tcpcb refers to this toepcb */
|
|
TPF_FLOWC_WR_SENT = (1 << 1), /* firmware flow context WR sent */
|
|
TPF_TX_DATA_SENT = (1 << 2), /* some data sent */
|
|
TPF_TX_SUSPENDED = (1 << 3), /* tx suspended for lack of resources */
|
|
TPF_SEND_FIN = (1 << 4), /* send FIN after all pending data */
|
|
TPF_FIN_SENT = (1 << 5), /* FIN has been sent */
|
|
TPF_ABORT_SHUTDOWN = (1 << 6), /* connection abort is in progress */
|
|
TPF_CPL_PENDING = (1 << 7), /* haven't received the last CPL */
|
|
TPF_SYNQE = (1 << 8), /* synq_entry, not really a toepcb */
|
|
TPF_SYNQE_NEEDFREE = (1 << 9), /* synq_entry was malloc'd separately */
|
|
TPF_SYNQE_TCPDDP = (1 << 10), /* ulp_mode TCPDDP in toepcb */
|
|
TPF_SYNQE_EXPANDED = (1 << 11), /* toepcb ready, tid context updated */
|
|
TPF_SYNQE_HAS_L2TE = (1 << 12), /* we've replied to PASS_ACCEPT_REQ */
|
|
};
|
|
|
|
enum {
|
|
DDP_OK = (1 << 0), /* OK to turn on DDP */
|
|
DDP_SC_REQ = (1 << 1), /* state change (on/off) requested */
|
|
DDP_ON = (1 << 2), /* DDP is turned on */
|
|
DDP_BUF0_ACTIVE = (1 << 3), /* buffer 0 in use (not invalidated) */
|
|
DDP_BUF1_ACTIVE = (1 << 4), /* buffer 1 in use (not invalidated) */
|
|
};
|
|
|
|
struct ofld_tx_sdesc {
|
|
uint32_t plen; /* payload length */
|
|
uint8_t tx_credits; /* firmware tx credits (unit is 16B) */
|
|
};
|
|
|
|
struct ddp_buffer {
|
|
uint32_t tag; /* includes color, page pod addr, and DDP page size */
|
|
u_int ppod_addr;
|
|
int nppods;
|
|
int offset;
|
|
int len;
|
|
int npages;
|
|
vm_page_t *pages;
|
|
};
|
|
|
|
struct toepcb {
|
|
TAILQ_ENTRY(toepcb) link; /* toep_list */
|
|
u_int flags; /* miscellaneous flags */
|
|
struct tom_data *td;
|
|
struct inpcb *inp; /* backpointer to host stack's PCB */
|
|
struct port_info *port; /* physical port */
|
|
struct sge_wrq *ofld_txq;
|
|
struct sge_ofld_rxq *ofld_rxq;
|
|
struct sge_wrq *ctrlq;
|
|
struct l2t_entry *l2te; /* L2 table entry used by this connection */
|
|
struct clip_entry *ce; /* CLIP table entry used by this tid */
|
|
int tid; /* Connection identifier */
|
|
|
|
/* tx credit handling */
|
|
u_int tx_total; /* total tx WR credits (in 16B units) */
|
|
u_int tx_credits; /* tx WR credits (in 16B units) available */
|
|
u_int tx_nocompl; /* tx WR credits since last compl request */
|
|
u_int plen_nocompl; /* payload since last compl request */
|
|
|
|
/* rx credit handling */
|
|
u_int sb_cc; /* last noted value of so_rcv->sb_cc */
|
|
int rx_credits; /* rx credits (in bytes) to be returned to hw */
|
|
|
|
u_int ulp_mode; /* ULP mode */
|
|
|
|
u_int ddp_flags;
|
|
struct ddp_buffer *db[2];
|
|
time_t ddp_disabled;
|
|
uint8_t ddp_score;
|
|
|
|
/* Tx software descriptor */
|
|
uint8_t txsd_total;
|
|
uint8_t txsd_pidx;
|
|
uint8_t txsd_cidx;
|
|
uint8_t txsd_avail;
|
|
struct ofld_tx_sdesc txsd[];
|
|
};
|
|
|
|
struct flowc_tx_params {
|
|
uint32_t snd_nxt;
|
|
uint32_t rcv_nxt;
|
|
unsigned int snd_space;
|
|
unsigned int mss;
|
|
};
|
|
|
|
#define DDP_RETRY_WAIT 5 /* seconds to wait before re-enabling DDP */
|
|
#define DDP_LOW_SCORE 1
|
|
#define DDP_HIGH_SCORE 3
|
|
|
|
/*
|
|
* Compressed state for embryonic connections for a listener. Barely fits in
|
|
* 64B, try not to grow it further.
|
|
*/
|
|
struct synq_entry {
|
|
TAILQ_ENTRY(synq_entry) link; /* listen_ctx's synq link */
|
|
int flags; /* same as toepcb's tp_flags */
|
|
int tid;
|
|
struct listen_ctx *lctx; /* backpointer to listen ctx */
|
|
struct mbuf *syn;
|
|
uint32_t iss;
|
|
uint32_t ts;
|
|
volatile uintptr_t wr;
|
|
volatile u_int refcnt;
|
|
uint16_t l2e_idx;
|
|
uint16_t rcv_bufsize;
|
|
};
|
|
|
|
/* listen_ctx flags */
|
|
#define LCTX_RPL_PENDING 1 /* waiting for a CPL_PASS_OPEN_RPL */
|
|
|
|
struct listen_ctx {
|
|
LIST_ENTRY(listen_ctx) link; /* listen hash linkage */
|
|
volatile int refcount;
|
|
int stid;
|
|
struct stid_region stid_region;
|
|
int flags;
|
|
struct inpcb *inp; /* listening socket's inp */
|
|
struct sge_wrq *ctrlq;
|
|
struct sge_ofld_rxq *ofld_rxq;
|
|
struct clip_entry *ce;
|
|
TAILQ_HEAD(, synq_entry) synq;
|
|
};
|
|
|
|
struct clip_entry {
|
|
TAILQ_ENTRY(clip_entry) link;
|
|
struct in6_addr lip; /* local IPv6 address */
|
|
u_int refcount;
|
|
};
|
|
|
|
TAILQ_HEAD(clip_head, clip_entry);
|
|
struct tom_data {
|
|
struct toedev tod;
|
|
|
|
/* toepcb's associated with this TOE device */
|
|
struct mtx toep_list_lock;
|
|
TAILQ_HEAD(, toepcb) toep_list;
|
|
|
|
struct mtx lctx_hash_lock;
|
|
LIST_HEAD(, listen_ctx) *listen_hash;
|
|
u_long listen_mask;
|
|
int lctx_count; /* # of lctx in the hash table */
|
|
|
|
u_int ppod_start;
|
|
vmem_t *ppod_arena;
|
|
|
|
struct mtx clip_table_lock;
|
|
struct clip_head clip_table;
|
|
int clip_gen;
|
|
|
|
/* WRs that will not be sent to the chip because L2 resolution failed */
|
|
struct mtx unsent_wr_lock;
|
|
STAILQ_HEAD(, wrqe) unsent_wr_list;
|
|
struct task reclaim_wr_resources;
|
|
};
|
|
|
|
static inline struct tom_data *
|
|
tod_td(struct toedev *tod)
|
|
{
|
|
|
|
return (__containerof(tod, struct tom_data, tod));
|
|
}
|
|
|
|
static inline struct adapter *
|
|
td_adapter(struct tom_data *td)
|
|
{
|
|
|
|
return (td->tod.tod_softc);
|
|
}
|
|
|
|
/* t4_tom.c */
|
|
struct toepcb *alloc_toepcb(struct port_info *, int, int, int);
|
|
void free_toepcb(struct toepcb *);
|
|
void offload_socket(struct socket *, struct toepcb *);
|
|
void undo_offload_socket(struct socket *);
|
|
void final_cpl_received(struct toepcb *);
|
|
void insert_tid(struct adapter *, int, void *);
|
|
void *lookup_tid(struct adapter *, int);
|
|
void update_tid(struct adapter *, int, void *);
|
|
void remove_tid(struct adapter *, int);
|
|
void release_tid(struct adapter *, int, struct sge_wrq *);
|
|
int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int);
|
|
u_long select_rcv_wnd(struct socket *);
|
|
int select_rcv_wscale(void);
|
|
uint64_t calc_opt0(struct socket *, struct port_info *, struct l2t_entry *,
|
|
int, int, int, int);
|
|
uint64_t select_ntuple(struct port_info *, struct l2t_entry *);
|
|
void set_tcpddp_ulp_mode(struct toepcb *);
|
|
int negative_advice(int);
|
|
struct clip_entry *hold_lip(struct tom_data *, struct in6_addr *);
|
|
void release_lip(struct tom_data *, struct clip_entry *);
|
|
|
|
/* t4_connect.c */
|
|
void t4_init_connect_cpl_handlers(struct adapter *);
|
|
int t4_connect(struct toedev *, struct socket *, struct rtentry *,
|
|
struct sockaddr *);
|
|
void act_open_failure_cleanup(struct adapter *, u_int, u_int);
|
|
|
|
/* t4_listen.c */
|
|
void t4_init_listen_cpl_handlers(struct adapter *);
|
|
int t4_listen_start(struct toedev *, struct tcpcb *);
|
|
int t4_listen_stop(struct toedev *, struct tcpcb *);
|
|
void t4_syncache_added(struct toedev *, void *);
|
|
void t4_syncache_removed(struct toedev *, void *);
|
|
int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
|
|
int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
|
|
struct mbuf *);
|
|
int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
|
|
struct mbuf *);
|
|
void t4_offload_socket(struct toedev *, void *, struct socket *);
|
|
|
|
/* t4_cpl_io.c */
|
|
void t4_init_cpl_io_handlers(struct adapter *);
|
|
void t4_uninit_cpl_io_handlers(struct adapter *);
|
|
void send_abort_rpl(struct adapter *, struct sge_wrq *, int , int);
|
|
void send_flowc_wr(struct toepcb *, struct flowc_tx_params *);
|
|
void send_reset(struct adapter *, struct toepcb *, uint32_t);
|
|
void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
|
|
void t4_rcvd(struct toedev *, struct tcpcb *);
|
|
int t4_tod_output(struct toedev *, struct tcpcb *);
|
|
int t4_send_fin(struct toedev *, struct tcpcb *);
|
|
int t4_send_rst(struct toedev *, struct tcpcb *);
|
|
void t4_set_tcb_field(struct adapter *, struct toepcb *, int, uint16_t,
|
|
uint64_t, uint64_t);
|
|
void t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop);
|
|
|
|
/* t4_ddp.c */
|
|
void t4_init_ddp(struct adapter *, struct tom_data *);
|
|
void t4_uninit_ddp(struct adapter *, struct tom_data *);
|
|
int t4_soreceive_ddp(struct socket *, struct sockaddr **, struct uio *,
|
|
struct mbuf **, struct mbuf **, int *);
|
|
void enable_ddp(struct adapter *, struct toepcb *toep);
|
|
void release_ddp_resources(struct toepcb *toep);
|
|
void handle_ddp_close(struct toepcb *, struct tcpcb *, struct sockbuf *,
|
|
uint32_t);
|
|
void insert_ddp_data(struct toepcb *, uint32_t);
|
|
|
|
/* ULP related */
|
|
#define CXGBE_ISCSI_MBUF_TAG 50
|
|
int t4tom_cpl_handler_registered(struct adapter *, unsigned int);
|
|
void t4tom_register_cpl_iscsi_callback(void (*fp)(struct tom_data *,
|
|
struct socket *, void *, unsigned int));
|
|
void t4tom_register_queue_iscsi_callback(struct mbuf *(*fp)(struct socket *,
|
|
unsigned int, int *));
|
|
void t4_ulp_push_frames(struct adapter *sc, struct toepcb *toep, int);
|
|
int t4_cpl_iscsi_callback(struct tom_data *, struct toepcb *, void *, uint32_t);
|
|
struct mbuf *t4_queue_iscsi_callback(struct socket *, struct toepcb *, uint32_t,
|
|
int *);
|
|
extern void (*tom_cpl_iscsi_callback)(struct tom_data *, struct socket *,
|
|
void *, unsigned int);
|
|
extern struct mbuf *(*tom_queue_iscsi_callback)(struct socket*, unsigned int,
|
|
int *);
|
|
#endif
|