8a82be5044
In certain edge cases, the NIC might have only received a partial TLS record which it needs to return to the driver. For example, if the local socket was closed while data was still in flight, a partial TLS record might be pending when the connection is closed. Receiving a RST in the middle of a TLS record is another example. When this happens, the firmware returns the the partial TLS record as plain TCP data via CPL_RX_DATA. Handle these requests by returning an error to OpenSSL (via so_error for KTLS or via an error TLS record header for the older Chelsio OpenSSL interface). Reported by: Sony Arpita Das @ Chelsio Reviewed by: np MFC after: 2 weeks Sponsored by: Chelsio Communications Differential Revision: Revision: https://reviews.freebsd.org/D26800
460 lines
14 KiB
C
460 lines
14 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012, 2015 Chelsio Communications, Inc.
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* All rights reserved.
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* Written by: Navdeep Parhar <np@FreeBSD.org>
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*
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __T4_TOM_H__
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#define __T4_TOM_H__
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#include <sys/vmem.h>
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#include "common/t4_hw.h"
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#include "common/t4_msg.h"
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#include "tom/t4_tls.h"
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#define LISTEN_HASH_SIZE 32
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/*
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* Min receive window. We want it to be large enough to accommodate receive
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* coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
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*/
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#define MIN_RCV_WND (24 * 1024U)
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/*
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* Max receive window supported by HW in bytes. Only a small part of it can
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* be set through option0, the rest needs to be set through RX_DATA_ACK.
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*/
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#define MAX_RCV_WND ((1U << 27) - 1)
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#define DDP_RSVD_WIN (16 * 1024U)
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#define SB_DDP_INDICATE SB_IN_TOE /* soreceive must respond to indicate */
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#define USE_DDP_RX_FLOW_CONTROL
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#define PPOD_SZ(n) ((n) * sizeof(struct pagepod))
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#define PPOD_SIZE (PPOD_SZ(1))
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/* TOE PCB flags */
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enum {
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TPF_ATTACHED = (1 << 0), /* a tcpcb refers to this toepcb */
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TPF_FLOWC_WR_SENT = (1 << 1), /* firmware flow context WR sent */
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TPF_TX_DATA_SENT = (1 << 2), /* some data sent */
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TPF_TX_SUSPENDED = (1 << 3), /* tx suspended for lack of resources */
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TPF_SEND_FIN = (1 << 4), /* send FIN after all pending data */
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TPF_FIN_SENT = (1 << 5), /* FIN has been sent */
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TPF_ABORT_SHUTDOWN = (1 << 6), /* connection abort is in progress */
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TPF_CPL_PENDING = (1 << 7), /* haven't received the last CPL */
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TPF_SYNQE = (1 << 8), /* synq_entry, not really a toepcb */
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TPF_SYNQE_EXPANDED = (1 << 9), /* toepcb ready, tid context updated */
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TPF_FORCE_CREDITS = (1 << 10), /* always send credits */
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TPF_KTLS = (1 << 11), /* send TLS records from KTLS */
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TPF_INITIALIZED = (1 << 12), /* init_toepcb has been called */
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TPF_TLS_RECEIVE = (1 << 13), /* should receive TLS records */
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};
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enum {
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DDP_OK = (1 << 0), /* OK to turn on DDP */
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DDP_SC_REQ = (1 << 1), /* state change (on/off) requested */
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DDP_ON = (1 << 2), /* DDP is turned on */
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DDP_BUF0_ACTIVE = (1 << 3), /* buffer 0 in use (not invalidated) */
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DDP_BUF1_ACTIVE = (1 << 4), /* buffer 1 in use (not invalidated) */
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DDP_TASK_ACTIVE = (1 << 5), /* requeue task is queued / running */
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DDP_DEAD = (1 << 6), /* toepcb is shutting down */
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};
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struct sockopt;
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struct offload_settings;
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/*
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* Connection parameters for an offloaded connection. These are mostly (but not
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* all) hardware TOE parameters.
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*/
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struct conn_params {
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int8_t rx_coalesce;
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int8_t cong_algo;
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int8_t tc_idx;
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int8_t tstamp;
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int8_t sack;
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int8_t nagle;
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int8_t keepalive;
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int8_t wscale;
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int8_t ecn;
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int8_t mtu_idx;
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int8_t ulp_mode;
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int8_t tx_align;
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int16_t txq_idx; /* ofld_txq = &sc->sge.ofld_txq[txq_idx] */
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int16_t rxq_idx; /* ofld_rxq = &sc->sge.ofld_rxq[rxq_idx] */
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int16_t l2t_idx;
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uint16_t emss;
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uint16_t opt0_bufsize;
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u_int sndbuf; /* controls TP tx pages */
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};
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struct ofld_tx_sdesc {
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uint32_t plen; /* payload length */
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uint8_t tx_credits; /* firmware tx credits (unit is 16B) */
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void *iv_buffer; /* optional buffer holding IVs for TLS */
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};
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struct ppod_region {
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u_int pr_start;
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u_int pr_len;
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u_int pr_page_shift[4];
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uint32_t pr_tag_mask; /* hardware tagmask for this region. */
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uint32_t pr_invalid_bit; /* OR with this to invalidate tag. */
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uint32_t pr_alias_mask; /* AND with tag to get alias bits. */
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u_int pr_alias_shift; /* shift this much for first alias bit. */
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vmem_t *pr_arena;
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};
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struct ppod_reservation {
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struct ppod_region *prsv_pr;
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uint32_t prsv_tag; /* Full tag: pgsz, alias, tag, color */
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u_int prsv_nppods;
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};
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struct pageset {
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TAILQ_ENTRY(pageset) link;
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vm_page_t *pages;
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int npages;
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int flags;
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int offset; /* offset in first page */
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int len;
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struct ppod_reservation prsv;
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struct vmspace *vm;
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vm_offset_t start;
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u_int vm_timestamp;
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};
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TAILQ_HEAD(pagesetq, pageset);
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#define PS_PPODS_WRITTEN 0x0001 /* Page pods written to the card. */
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struct ddp_buffer {
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struct pageset *ps;
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struct kaiocb *job;
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int cancel_pending;
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};
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struct ddp_pcb {
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u_int flags;
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struct ddp_buffer db[2];
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TAILQ_HEAD(, pageset) cached_pagesets;
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TAILQ_HEAD(, kaiocb) aiojobq;
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u_int waiting_count;
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u_int active_count;
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u_int cached_count;
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int active_id; /* the currently active DDP buffer */
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struct task requeue_task;
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struct kaiocb *queueing;
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struct mtx lock;
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};
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struct toepcb {
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struct tom_data *td;
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struct inpcb *inp; /* backpointer to host stack's PCB */
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u_int flags; /* miscellaneous flags */
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TAILQ_ENTRY(toepcb) link; /* toep_list */
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int refcount;
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struct vnet *vnet;
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struct vi_info *vi; /* virtual interface */
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struct sge_wrq *ofld_txq;
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struct sge_ofld_rxq *ofld_rxq;
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struct sge_wrq *ctrlq;
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struct l2t_entry *l2te; /* L2 table entry used by this connection */
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struct clip_entry *ce; /* CLIP table entry used by this tid */
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int tid; /* Connection identifier */
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/* tx credit handling */
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u_int tx_total; /* total tx WR credits (in 16B units) */
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u_int tx_credits; /* tx WR credits (in 16B units) available */
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u_int tx_nocompl; /* tx WR credits since last compl request */
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u_int plen_nocompl; /* payload since last compl request */
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struct conn_params params;
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void *ulpcb;
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void *ulpcb2;
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struct mbufq ulp_pduq; /* PDUs waiting to be sent out. */
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struct mbufq ulp_pdu_reclaimq;
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struct ddp_pcb ddp;
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struct tls_ofld_info tls;
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TAILQ_HEAD(, kaiocb) aiotx_jobq;
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struct task aiotx_task;
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struct socket *aiotx_so;
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/* Tx software descriptor */
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uint8_t txsd_total;
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uint8_t txsd_pidx;
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uint8_t txsd_cidx;
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uint8_t txsd_avail;
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struct ofld_tx_sdesc txsd[];
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};
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static inline int
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ulp_mode(struct toepcb *toep)
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{
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return (toep->params.ulp_mode);
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}
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#define DDP_LOCK(toep) mtx_lock(&(toep)->ddp.lock)
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#define DDP_UNLOCK(toep) mtx_unlock(&(toep)->ddp.lock)
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#define DDP_ASSERT_LOCKED(toep) mtx_assert(&(toep)->ddp.lock, MA_OWNED)
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/*
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* Compressed state for embryonic connections for a listener.
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*/
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struct synq_entry {
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struct listen_ctx *lctx; /* backpointer to listen ctx */
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struct mbuf *syn;
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int flags; /* same as toepcb's tp_flags */
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volatile int ok_to_respond;
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volatile u_int refcnt;
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int tid;
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uint32_t iss;
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uint32_t irs;
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uint32_t ts;
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uint32_t rss_hash;
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__be16 tcp_opt; /* from cpl_pass_establish */
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struct toepcb *toep;
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struct conn_params params;
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};
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/* listen_ctx flags */
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#define LCTX_RPL_PENDING 1 /* waiting for a CPL_PASS_OPEN_RPL */
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struct listen_ctx {
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LIST_ENTRY(listen_ctx) link; /* listen hash linkage */
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volatile int refcount;
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int stid;
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struct stid_region stid_region;
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int flags;
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struct inpcb *inp; /* listening socket's inp */
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struct vnet *vnet;
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struct sge_wrq *ctrlq;
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struct sge_ofld_rxq *ofld_rxq;
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struct clip_entry *ce;
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};
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/* tcb_histent flags */
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#define TE_RPL_PENDING 1
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#define TE_ACTIVE 2
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/* bits in one 8b tcb_histent sample. */
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#define TS_RTO (1 << 0)
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#define TS_DUPACKS (1 << 1)
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#define TS_FASTREXMT (1 << 2)
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#define TS_SND_BACKLOGGED (1 << 3)
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#define TS_CWND_LIMITED (1 << 4)
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#define TS_ECN_ECE (1 << 5)
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#define TS_ECN_CWR (1 << 6)
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#define TS_RESERVED (1 << 7) /* Unused. */
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struct tcb_histent {
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struct mtx te_lock;
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struct callout te_callout;
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uint64_t te_tcb[TCB_SIZE / sizeof(uint64_t)];
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struct adapter *te_adapter;
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u_int te_flags;
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u_int te_tid;
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uint8_t te_pidx;
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uint8_t te_sample[100];
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};
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struct tom_data {
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struct toedev tod;
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/* toepcb's associated with this TOE device */
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struct mtx toep_list_lock;
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TAILQ_HEAD(, toepcb) toep_list;
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struct mtx lctx_hash_lock;
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LIST_HEAD(, listen_ctx) *listen_hash;
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u_long listen_mask;
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int lctx_count; /* # of lctx in the hash table */
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struct ppod_region pr;
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struct rwlock tcb_history_lock __aligned(CACHE_LINE_SIZE);
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struct tcb_histent **tcb_history;
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int dupack_threshold;
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/* WRs that will not be sent to the chip because L2 resolution failed */
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struct mtx unsent_wr_lock;
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STAILQ_HEAD(, wrqe) unsent_wr_list;
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struct task reclaim_wr_resources;
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};
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static inline struct tom_data *
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tod_td(struct toedev *tod)
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{
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return (__containerof(tod, struct tom_data, tod));
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}
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static inline struct adapter *
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td_adapter(struct tom_data *td)
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{
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return (td->tod.tod_softc);
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}
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static inline void
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set_mbuf_ulp_submode(struct mbuf *m, uint8_t ulp_submode)
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{
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M_ASSERTPKTHDR(m);
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m->m_pkthdr.PH_per.eight[0] = ulp_submode;
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}
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static inline uint8_t
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mbuf_ulp_submode(struct mbuf *m)
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{
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M_ASSERTPKTHDR(m);
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return (m->m_pkthdr.PH_per.eight[0]);
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}
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/* t4_tom.c */
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struct toepcb *alloc_toepcb(struct vi_info *, int);
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int init_toepcb(struct vi_info *, struct toepcb *);
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struct toepcb *hold_toepcb(struct toepcb *);
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void free_toepcb(struct toepcb *);
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void offload_socket(struct socket *, struct toepcb *);
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void undo_offload_socket(struct socket *);
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void final_cpl_received(struct toepcb *);
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void insert_tid(struct adapter *, int, void *, int);
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void *lookup_tid(struct adapter *, int);
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void update_tid(struct adapter *, int, void *);
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void remove_tid(struct adapter *, int, int);
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u_long select_rcv_wnd(struct socket *);
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int select_rcv_wscale(void);
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void init_conn_params(struct vi_info *, struct offload_settings *,
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struct in_conninfo *, struct socket *, const struct tcp_options *, int16_t,
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struct conn_params *cp);
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__be64 calc_options0(struct vi_info *, struct conn_params *);
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__be32 calc_options2(struct vi_info *, struct conn_params *);
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uint64_t select_ntuple(struct vi_info *, struct l2t_entry *);
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int negative_advice(int);
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int add_tid_to_history(struct adapter *, u_int);
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/* t4_connect.c */
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void t4_init_connect_cpl_handlers(void);
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void t4_uninit_connect_cpl_handlers(void);
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int t4_connect(struct toedev *, struct socket *, struct nhop_object *,
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struct sockaddr *);
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void act_open_failure_cleanup(struct adapter *, u_int, u_int);
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/* t4_listen.c */
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void t4_init_listen_cpl_handlers(void);
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void t4_uninit_listen_cpl_handlers(void);
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int t4_listen_start(struct toedev *, struct tcpcb *);
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int t4_listen_stop(struct toedev *, struct tcpcb *);
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void t4_syncache_added(struct toedev *, void *);
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void t4_syncache_removed(struct toedev *, void *);
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int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
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int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
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struct mbuf *);
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int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
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struct mbuf *);
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void t4_offload_socket(struct toedev *, void *, struct socket *);
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void synack_failure_cleanup(struct adapter *, int);
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/* t4_cpl_io.c */
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void aiotx_init_toep(struct toepcb *);
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int t4_aio_queue_aiotx(struct socket *, struct kaiocb *);
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void t4_init_cpl_io_handlers(void);
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void t4_uninit_cpl_io_handlers(void);
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void send_abort_rpl(struct adapter *, struct sge_wrq *, int , int);
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void send_flowc_wr(struct toepcb *, struct tcpcb *);
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void send_reset(struct adapter *, struct toepcb *, uint32_t);
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int send_rx_credits(struct adapter *, struct toepcb *, int);
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void send_rx_modulate(struct adapter *, struct toepcb *);
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void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
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int t4_close_conn(struct adapter *, struct toepcb *);
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void t4_rcvd(struct toedev *, struct tcpcb *);
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void t4_rcvd_locked(struct toedev *, struct tcpcb *);
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int t4_tod_output(struct toedev *, struct tcpcb *);
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int t4_send_fin(struct toedev *, struct tcpcb *);
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int t4_send_rst(struct toedev *, struct tcpcb *);
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void t4_set_tcb_field(struct adapter *, struct sge_wrq *, struct toepcb *,
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uint16_t, uint64_t, uint64_t, int, int);
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void t4_push_frames(struct adapter *, struct toepcb *, int);
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void t4_push_pdus(struct adapter *, struct toepcb *, int);
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/* t4_ddp.c */
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int t4_init_ppod_region(struct ppod_region *, struct t4_range *, u_int,
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const char *);
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void t4_free_ppod_region(struct ppod_region *);
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int t4_alloc_page_pods_for_ps(struct ppod_region *, struct pageset *);
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int t4_alloc_page_pods_for_buf(struct ppod_region *, vm_offset_t, int,
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struct ppod_reservation *);
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int t4_write_page_pods_for_ps(struct adapter *, struct sge_wrq *, int,
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struct pageset *);
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int t4_write_page_pods_for_buf(struct adapter *, struct sge_wrq *, int tid,
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struct ppod_reservation *, vm_offset_t, int);
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void t4_free_page_pods(struct ppod_reservation *);
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int t4_soreceive_ddp(struct socket *, struct sockaddr **, struct uio *,
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struct mbuf **, struct mbuf **, int *);
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int t4_aio_queue_ddp(struct socket *, struct kaiocb *);
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void t4_ddp_mod_load(void);
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void t4_ddp_mod_unload(void);
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void ddp_assert_empty(struct toepcb *);
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void ddp_init_toep(struct toepcb *);
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void ddp_uninit_toep(struct toepcb *);
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void ddp_queue_toep(struct toepcb *);
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void release_ddp_resources(struct toepcb *toep);
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void handle_ddp_close(struct toepcb *, struct tcpcb *, uint32_t);
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void handle_ddp_indicate(struct toepcb *);
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void insert_ddp_data(struct toepcb *, uint32_t);
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const struct offload_settings *lookup_offload_policy(struct adapter *, int,
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struct mbuf *, uint16_t, struct inpcb *);
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/* t4_tls.c */
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bool can_tls_offload(struct adapter *);
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void do_rx_data_tls(const struct cpl_rx_data *, struct toepcb *, struct mbuf *);
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int t4_ctloutput_tls(struct socket *, struct sockopt *);
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void t4_push_tls_records(struct adapter *, struct toepcb *, int);
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void t4_push_ktls(struct adapter *, struct toepcb *, int);
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void t4_tls_mod_load(void);
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void t4_tls_mod_unload(void);
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void tls_establish(struct toepcb *);
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void tls_init_toep(struct toepcb *);
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int tls_rx_key(struct toepcb *);
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void tls_stop_handshake_timer(struct toepcb *);
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int tls_tx_key(struct toepcb *);
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void tls_uninit_toep(struct toepcb *);
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int tls_alloc_ktls(struct toepcb *, struct ktls_session *, int);
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#endif
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