dfd1b3a02f
negative advice and not a fatal error. MFC after: 3 days
1463 lines
39 KiB
C
1463 lines
39 KiB
C
/*-
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* Copyright (c) 2012 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#ifdef TCP_OFFLOAD
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/kernel.h>
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#include <sys/ktr.h>
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#include <sys/module.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sglist.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip.h>
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#include <netinet/tcp_var.h>
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#define TCPSTATES
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_seq.h>
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#include <netinet/toecore.h>
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#include "common/common.h"
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#include "common/t4_msg.h"
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#include "common/t4_regs.h"
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#include "common/t4_tcb.h"
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#include "tom/t4_tom_l2t.h"
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#include "tom/t4_tom.h"
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VNET_DECLARE(int, tcp_do_autosndbuf);
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#define V_tcp_do_autosndbuf VNET(tcp_do_autosndbuf)
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VNET_DECLARE(int, tcp_autosndbuf_inc);
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#define V_tcp_autosndbuf_inc VNET(tcp_autosndbuf_inc)
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VNET_DECLARE(int, tcp_autosndbuf_max);
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#define V_tcp_autosndbuf_max VNET(tcp_autosndbuf_max)
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VNET_DECLARE(int, tcp_do_autorcvbuf);
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#define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf)
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VNET_DECLARE(int, tcp_autorcvbuf_inc);
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#define V_tcp_autorcvbuf_inc VNET(tcp_autorcvbuf_inc)
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VNET_DECLARE(int, tcp_autorcvbuf_max);
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#define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max)
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void
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send_flowc_wr(struct toepcb *toep, struct flowc_tx_params *ftxp)
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{
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struct wrqe *wr;
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struct fw_flowc_wr *flowc;
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unsigned int nparams = ftxp ? 8 : 6, flowclen;
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struct port_info *pi = toep->port;
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struct adapter *sc = pi->adapter;
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unsigned int pfvf = G_FW_VIID_PFN(pi->viid) << S_FW_VIID_PFN;
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struct ofld_tx_sdesc *txsd = &toep->txsd[toep->txsd_pidx];
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KASSERT(!(toep->flags & TPF_FLOWC_WR_SENT),
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("%s: flowc for tid %u sent already", __func__, toep->tid));
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CTR2(KTR_CXGBE, "%s: tid %u", __func__, toep->tid);
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flowclen = sizeof(*flowc) + nparams * sizeof(struct fw_flowc_mnemval);
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wr = alloc_wrqe(roundup(flowclen, 16), toep->ofld_txq);
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if (wr == NULL) {
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/* XXX */
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panic("%s: allocation failure.", __func__);
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}
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flowc = wrtod(wr);
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memset(flowc, 0, wr->wr_len);
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flowc->op_to_nparams = htobe32(V_FW_WR_OP(FW_FLOWC_WR) |
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V_FW_FLOWC_WR_NPARAMS(nparams));
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flowc->flowid_len16 = htonl(V_FW_WR_LEN16(howmany(flowclen, 16)) |
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V_FW_WR_FLOWID(toep->tid));
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flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
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flowc->mnemval[0].val = htobe32(pfvf);
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flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
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flowc->mnemval[1].val = htobe32(pi->tx_chan);
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flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
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flowc->mnemval[2].val = htobe32(pi->tx_chan);
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flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
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flowc->mnemval[3].val = htobe32(toep->ofld_rxq->iq.abs_id);
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if (ftxp) {
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uint32_t sndbuf = min(ftxp->snd_space, sc->tt.sndbuf);
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flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
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flowc->mnemval[4].val = htobe32(ftxp->snd_nxt);
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flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
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flowc->mnemval[5].val = htobe32(ftxp->rcv_nxt);
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flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
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flowc->mnemval[6].val = htobe32(sndbuf);
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flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
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flowc->mnemval[7].val = htobe32(ftxp->mss);
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} else {
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flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDBUF;
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flowc->mnemval[4].val = htobe32(512);
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flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_MSS;
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flowc->mnemval[5].val = htobe32(512);
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}
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txsd->tx_credits = howmany(flowclen, 16);
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txsd->plen = 0;
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KASSERT(toep->tx_credits >= txsd->tx_credits && toep->txsd_avail > 0,
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("%s: not enough credits (%d)", __func__, toep->tx_credits));
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toep->tx_credits -= txsd->tx_credits;
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if (__predict_false(++toep->txsd_pidx == toep->txsd_total))
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toep->txsd_pidx = 0;
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toep->txsd_avail--;
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toep->flags |= TPF_FLOWC_WR_SENT;
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t4_wrq_tx(sc, wr);
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}
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void
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send_reset(struct adapter *sc, struct toepcb *toep, uint32_t snd_nxt)
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{
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struct wrqe *wr;
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struct cpl_abort_req *req;
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int tid = toep->tid;
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struct inpcb *inp = toep->inp;
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struct tcpcb *tp = intotcpcb(inp); /* don't use if INP_DROPPED */
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INP_WLOCK_ASSERT(inp);
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CTR6(KTR_CXGBE, "%s: tid %d (%s), toep_flags 0x%x, inp_flags 0x%x%s",
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__func__, toep->tid,
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inp->inp_flags & INP_DROPPED ? "inp dropped" :
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tcpstates[tp->t_state],
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toep->flags, inp->inp_flags,
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toep->flags & TPF_ABORT_SHUTDOWN ?
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" (abort already in progress)" : "");
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if (toep->flags & TPF_ABORT_SHUTDOWN)
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return; /* abort already in progress */
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toep->flags |= TPF_ABORT_SHUTDOWN;
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KASSERT(toep->flags & TPF_FLOWC_WR_SENT,
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("%s: flowc_wr not sent for tid %d.", __func__, tid));
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wr = alloc_wrqe(sizeof(*req), toep->ofld_txq);
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if (wr == NULL) {
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/* XXX */
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panic("%s: allocation failure.", __func__);
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}
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req = wrtod(wr);
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INIT_TP_WR_MIT_CPL(req, CPL_ABORT_REQ, tid);
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if (inp->inp_flags & INP_DROPPED)
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req->rsvd0 = htobe32(snd_nxt);
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else
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req->rsvd0 = htobe32(tp->snd_nxt);
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req->rsvd1 = !(toep->flags & TPF_TX_DATA_SENT);
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req->cmd = CPL_ABORT_SEND_RST;
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/*
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* XXX: What's the correct way to tell that the inp hasn't been detached
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* from its socket? Should I even be flushing the snd buffer here?
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*/
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if ((inp->inp_flags & (INP_DROPPED | INP_TIMEWAIT)) == 0) {
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struct socket *so = inp->inp_socket;
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if (so != NULL) /* because I'm not sure. See comment above */
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sbflush(&so->so_snd);
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}
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t4_l2t_send(sc, wr, toep->l2te);
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}
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/*
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* Called when a connection is established to translate the TCP options
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* reported by HW to FreeBSD's native format.
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*/
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static void
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assign_rxopt(struct tcpcb *tp, unsigned int opt)
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{
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struct toepcb *toep = tp->t_toe;
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struct adapter *sc = td_adapter(toep->td);
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INP_LOCK_ASSERT(tp->t_inpcb);
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tp->t_maxseg = tp->t_maxopd = sc->params.mtus[G_TCPOPT_MSS(opt)] - 40;
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if (G_TCPOPT_TSTAMP(opt)) {
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tp->t_flags |= TF_RCVD_TSTMP; /* timestamps ok */
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tp->ts_recent = 0; /* hmmm */
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tp->ts_recent_age = tcp_ts_getticks();
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tp->t_maxseg -= TCPOLEN_TSTAMP_APPA;
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}
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if (G_TCPOPT_SACK(opt))
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tp->t_flags |= TF_SACK_PERMIT; /* should already be set */
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else
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tp->t_flags &= ~TF_SACK_PERMIT; /* sack disallowed by peer */
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if (G_TCPOPT_WSCALE_OK(opt))
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tp->t_flags |= TF_RCVD_SCALE;
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/* Doing window scaling? */
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if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==
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(TF_RCVD_SCALE | TF_REQ_SCALE)) {
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tp->rcv_scale = tp->request_r_scale;
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tp->snd_scale = G_TCPOPT_SND_WSCALE(opt);
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}
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}
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/*
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* Completes some final bits of initialization for just established connections
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* and changes their state to TCPS_ESTABLISHED.
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*
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* The ISNs are from after the exchange of SYNs. i.e., the true ISN + 1.
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*/
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void
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make_established(struct toepcb *toep, uint32_t snd_isn, uint32_t rcv_isn,
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uint16_t opt)
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{
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struct inpcb *inp = toep->inp;
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struct socket *so = inp->inp_socket;
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struct tcpcb *tp = intotcpcb(inp);
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long bufsize;
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uint32_t iss = be32toh(snd_isn) - 1; /* true ISS */
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uint32_t irs = be32toh(rcv_isn) - 1; /* true IRS */
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uint16_t tcpopt = be16toh(opt);
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struct flowc_tx_params ftxp;
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INP_WLOCK_ASSERT(inp);
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KASSERT(tp->t_state == TCPS_SYN_SENT ||
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tp->t_state == TCPS_SYN_RECEIVED,
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("%s: TCP state %s", __func__, tcpstates[tp->t_state]));
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CTR4(KTR_CXGBE, "%s: tid %d, toep %p, inp %p",
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__func__, toep->tid, toep, inp);
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tp->t_state = TCPS_ESTABLISHED;
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tp->t_starttime = ticks;
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TCPSTAT_INC(tcps_connects);
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tp->irs = irs;
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tcp_rcvseqinit(tp);
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tp->rcv_wnd = toep->rx_credits << 10;
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tp->rcv_adv += tp->rcv_wnd;
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tp->last_ack_sent = tp->rcv_nxt;
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/*
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* If we were unable to send all rx credits via opt0, save the remainder
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* in rx_credits so that they can be handed over with the next credit
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* update.
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*/
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SOCKBUF_LOCK(&so->so_rcv);
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bufsize = select_rcv_wnd(so);
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SOCKBUF_UNLOCK(&so->so_rcv);
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toep->rx_credits = bufsize - tp->rcv_wnd;
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tp->iss = iss;
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tcp_sendseqinit(tp);
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tp->snd_una = iss + 1;
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tp->snd_nxt = iss + 1;
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tp->snd_max = iss + 1;
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assign_rxopt(tp, tcpopt);
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SOCKBUF_LOCK(&so->so_snd);
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if (so->so_snd.sb_flags & SB_AUTOSIZE && V_tcp_do_autosndbuf)
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bufsize = V_tcp_autosndbuf_max;
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else
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bufsize = sbspace(&so->so_snd);
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SOCKBUF_UNLOCK(&so->so_snd);
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ftxp.snd_nxt = tp->snd_nxt;
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ftxp.rcv_nxt = tp->rcv_nxt;
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ftxp.snd_space = bufsize;
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ftxp.mss = tp->t_maxseg;
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send_flowc_wr(toep, &ftxp);
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soisconnected(so);
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}
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static int
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send_rx_credits(struct adapter *sc, struct toepcb *toep, int credits)
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{
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struct wrqe *wr;
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struct cpl_rx_data_ack *req;
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uint32_t dack = F_RX_DACK_CHANGE | V_RX_DACK_MODE(1);
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KASSERT(credits >= 0, ("%s: %d credits", __func__, credits));
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wr = alloc_wrqe(sizeof(*req), toep->ctrlq);
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if (wr == NULL)
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return (0);
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req = wrtod(wr);
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INIT_TP_WR_MIT_CPL(req, CPL_RX_DATA_ACK, toep->tid);
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req->credit_dack = htobe32(dack | V_RX_CREDITS(credits));
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t4_wrq_tx(sc, wr);
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return (credits);
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}
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void
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t4_rcvd(struct toedev *tod, struct tcpcb *tp)
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{
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struct adapter *sc = tod->tod_softc;
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struct inpcb *inp = tp->t_inpcb;
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struct socket *so = inp->inp_socket;
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struct sockbuf *sb = &so->so_rcv;
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struct toepcb *toep = tp->t_toe;
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int credits;
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INP_WLOCK_ASSERT(inp);
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SOCKBUF_LOCK(sb);
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KASSERT(toep->sb_cc >= sb->sb_cc,
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("%s: sb %p has more data (%d) than last time (%d).",
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__func__, sb, sb->sb_cc, toep->sb_cc));
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toep->rx_credits += toep->sb_cc - sb->sb_cc;
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toep->sb_cc = sb->sb_cc;
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credits = toep->rx_credits;
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SOCKBUF_UNLOCK(sb);
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if (credits > 0 &&
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(credits + 16384 >= tp->rcv_wnd || credits >= 15 * 1024)) {
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credits = send_rx_credits(sc, toep, credits);
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SOCKBUF_LOCK(sb);
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toep->rx_credits -= credits;
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SOCKBUF_UNLOCK(sb);
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tp->rcv_wnd += credits;
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tp->rcv_adv += credits;
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}
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}
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/*
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* Close a connection by sending a CPL_CLOSE_CON_REQ message.
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*/
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static int
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close_conn(struct adapter *sc, struct toepcb *toep)
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{
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struct wrqe *wr;
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struct cpl_close_con_req *req;
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unsigned int tid = toep->tid;
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CTR3(KTR_CXGBE, "%s: tid %u%s", __func__, toep->tid,
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toep->flags & TPF_FIN_SENT ? ", IGNORED" : "");
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if (toep->flags & TPF_FIN_SENT)
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return (0);
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KASSERT(toep->flags & TPF_FLOWC_WR_SENT,
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("%s: flowc_wr not sent for tid %u.", __func__, tid));
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wr = alloc_wrqe(sizeof(*req), toep->ofld_txq);
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if (wr == NULL) {
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/* XXX */
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panic("%s: allocation failure.", __func__);
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}
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req = wrtod(wr);
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req->wr.wr_hi = htonl(V_FW_WR_OP(FW_TP_WR) |
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V_FW_WR_IMMDLEN(sizeof(*req) - sizeof(req->wr)));
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req->wr.wr_mid = htonl(V_FW_WR_LEN16(howmany(sizeof(*req), 16)) |
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V_FW_WR_FLOWID(tid));
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req->wr.wr_lo = cpu_to_be64(0);
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OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid));
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req->rsvd = 0;
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toep->flags |= TPF_FIN_SENT;
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toep->flags &= ~TPF_SEND_FIN;
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t4_l2t_send(sc, wr, toep->l2te);
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return (0);
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}
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#define MAX_OFLD_TX_CREDITS (SGE_MAX_WR_LEN / 16)
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#define MIN_OFLD_TX_CREDITS (howmany(sizeof(struct fw_ofld_tx_data_wr) + 1, 16))
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/* Maximum amount of immediate data we could stuff in a WR */
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static inline int
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max_imm_payload(int tx_credits)
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{
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const int n = 2; /* Use only up to 2 desc for imm. data WR */
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KASSERT(tx_credits >= 0 &&
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tx_credits <= MAX_OFLD_TX_CREDITS,
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("%s: %d credits", __func__, tx_credits));
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if (tx_credits < MIN_OFLD_TX_CREDITS)
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return (0);
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if (tx_credits >= (n * EQ_ESIZE) / 16)
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return ((n * EQ_ESIZE) - sizeof(struct fw_ofld_tx_data_wr));
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else
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return (tx_credits * 16 - sizeof(struct fw_ofld_tx_data_wr));
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}
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/* Maximum number of SGL entries we could stuff in a WR */
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static inline int
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max_dsgl_nsegs(int tx_credits)
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{
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int nseg = 1; /* ulptx_sgl has room for 1, rest ulp_tx_sge_pair */
|
|
int sge_pair_credits = tx_credits - MIN_OFLD_TX_CREDITS;
|
|
|
|
KASSERT(tx_credits >= 0 &&
|
|
tx_credits <= MAX_OFLD_TX_CREDITS,
|
|
("%s: %d credits", __func__, tx_credits));
|
|
|
|
if (tx_credits < MIN_OFLD_TX_CREDITS)
|
|
return (0);
|
|
|
|
nseg += 2 * (sge_pair_credits * 16 / 24);
|
|
if ((sge_pair_credits * 16) % 24 == 16)
|
|
nseg++;
|
|
|
|
return (nseg);
|
|
}
|
|
|
|
static inline void
|
|
write_tx_wr(void *dst, struct toepcb *toep, unsigned int immdlen,
|
|
unsigned int plen, uint8_t credits, int more_to_come)
|
|
{
|
|
struct fw_ofld_tx_data_wr *txwr = dst;
|
|
int shove = !more_to_come;
|
|
int compl = 1;
|
|
|
|
/*
|
|
* We always request completion notifications from the firmware. The
|
|
* only exception is when we know we'll get more data to send shortly
|
|
* and that we'll have some tx credits remaining to transmit that data.
|
|
*/
|
|
if (more_to_come && toep->tx_credits - credits >= MIN_OFLD_TX_CREDITS)
|
|
compl = 0;
|
|
|
|
txwr->op_to_immdlen = htobe32(V_WR_OP(FW_OFLD_TX_DATA_WR) |
|
|
V_FW_WR_COMPL(compl) | V_FW_WR_IMMDLEN(immdlen));
|
|
txwr->flowid_len16 = htobe32(V_FW_WR_FLOWID(toep->tid) |
|
|
V_FW_WR_LEN16(credits));
|
|
txwr->tunnel_to_proxy =
|
|
htobe32(V_FW_OFLD_TX_DATA_WR_ULPMODE(toep->ulp_mode) |
|
|
V_FW_OFLD_TX_DATA_WR_URGENT(0) | /* XXX */
|
|
V_FW_OFLD_TX_DATA_WR_SHOVE(shove));
|
|
txwr->plen = htobe32(plen);
|
|
}
|
|
|
|
/*
|
|
* Generate a DSGL from a starting mbuf. The total number of segments and the
|
|
* maximum segments in any one mbuf are provided.
|
|
*/
|
|
static void
|
|
write_tx_sgl(void *dst, struct mbuf *start, struct mbuf *stop, int nsegs, int n)
|
|
{
|
|
struct mbuf *m;
|
|
struct ulptx_sgl *usgl = dst;
|
|
int i, j, rc;
|
|
struct sglist sg;
|
|
struct sglist_seg segs[n];
|
|
|
|
KASSERT(nsegs > 0, ("%s: nsegs 0", __func__));
|
|
|
|
sglist_init(&sg, n, segs);
|
|
usgl->cmd_nsge = htobe32(V_ULPTX_CMD(ULP_TX_SC_DSGL) |
|
|
V_ULPTX_NSGE(nsegs));
|
|
|
|
i = -1;
|
|
for (m = start; m != stop; m = m->m_next) {
|
|
rc = sglist_append(&sg, mtod(m, void *), m->m_len);
|
|
if (__predict_false(rc != 0))
|
|
panic("%s: sglist_append %d", __func__, rc);
|
|
|
|
for (j = 0; j < sg.sg_nseg; i++, j++) {
|
|
if (i < 0) {
|
|
usgl->len0 = htobe32(segs[j].ss_len);
|
|
usgl->addr0 = htobe64(segs[j].ss_paddr);
|
|
} else {
|
|
usgl->sge[i / 2].len[i & 1] =
|
|
htobe32(segs[j].ss_len);
|
|
usgl->sge[i / 2].addr[i & 1] =
|
|
htobe64(segs[j].ss_paddr);
|
|
}
|
|
#ifdef INVARIANTS
|
|
nsegs--;
|
|
#endif
|
|
}
|
|
sglist_reset(&sg);
|
|
}
|
|
if (i & 1)
|
|
usgl->sge[i / 2].len[1] = htobe32(0);
|
|
KASSERT(nsegs == 0, ("%s: nsegs %d, start %p, stop %p",
|
|
__func__, nsegs, start, stop));
|
|
}
|
|
|
|
/*
|
|
* Max number of SGL entries an offload tx work request can have. This is 41
|
|
* (1 + 40) for a full 512B work request.
|
|
* fw_ofld_tx_data_wr(16B) + ulptx_sgl(16B, 1) + ulptx_sge_pair(480B, 40)
|
|
*/
|
|
#define OFLD_SGL_LEN (41)
|
|
|
|
/*
|
|
* Send data and/or a FIN to the peer.
|
|
*
|
|
* The socket's so_snd buffer consists of a stream of data starting with sb_mb
|
|
* and linked together with m_next. sb_sndptr, if set, is the last mbuf that
|
|
* was transmitted.
|
|
*/
|
|
static void
|
|
t4_push_frames(struct adapter *sc, struct toepcb *toep)
|
|
{
|
|
struct mbuf *sndptr, *m, *sb_sndptr;
|
|
struct fw_ofld_tx_data_wr *txwr;
|
|
struct wrqe *wr;
|
|
unsigned int plen, nsegs, credits, max_imm, max_nsegs, max_nsegs_1mbuf;
|
|
struct inpcb *inp = toep->inp;
|
|
struct tcpcb *tp = intotcpcb(inp);
|
|
struct socket *so = inp->inp_socket;
|
|
struct sockbuf *sb = &so->so_snd;
|
|
int tx_credits;
|
|
struct ofld_tx_sdesc *txsd = &toep->txsd[toep->txsd_pidx];
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
KASSERT(toep->flags & TPF_FLOWC_WR_SENT,
|
|
("%s: flowc_wr not sent for tid %u.", __func__, toep->tid));
|
|
|
|
if (__predict_false(toep->ulp_mode != ULP_MODE_NONE &&
|
|
toep->ulp_mode != ULP_MODE_TCPDDP))
|
|
CXGBE_UNIMPLEMENTED("ulp_mode");
|
|
|
|
/*
|
|
* This function doesn't resume by itself. Someone else must clear the
|
|
* flag and call this function.
|
|
*/
|
|
if (__predict_false(toep->flags & TPF_TX_SUSPENDED))
|
|
return;
|
|
|
|
do {
|
|
tx_credits = min(toep->tx_credits, MAX_OFLD_TX_CREDITS);
|
|
max_imm = max_imm_payload(tx_credits);
|
|
max_nsegs = max_dsgl_nsegs(tx_credits);
|
|
|
|
SOCKBUF_LOCK(sb);
|
|
sb_sndptr = sb->sb_sndptr;
|
|
sndptr = sb_sndptr ? sb_sndptr->m_next : sb->sb_mb;
|
|
plen = 0;
|
|
nsegs = 0;
|
|
max_nsegs_1mbuf = 0; /* max # of SGL segments in any one mbuf */
|
|
for (m = sndptr; m != NULL; m = m->m_next) {
|
|
int n = sglist_count(mtod(m, void *), m->m_len);
|
|
|
|
nsegs += n;
|
|
plen += m->m_len;
|
|
|
|
/* This mbuf sent us _over_ the nsegs limit, back out */
|
|
if (plen > max_imm && nsegs > max_nsegs) {
|
|
nsegs -= n;
|
|
plen -= m->m_len;
|
|
if (plen == 0) {
|
|
/* Too few credits */
|
|
toep->flags |= TPF_TX_SUSPENDED;
|
|
SOCKBUF_UNLOCK(sb);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (max_nsegs_1mbuf < n)
|
|
max_nsegs_1mbuf = n;
|
|
sb_sndptr = m; /* new sb->sb_sndptr if all goes well */
|
|
|
|
/* This mbuf put us right at the max_nsegs limit */
|
|
if (plen > max_imm && nsegs == max_nsegs) {
|
|
m = m->m_next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (sb->sb_flags & SB_AUTOSIZE &&
|
|
V_tcp_do_autosndbuf &&
|
|
sb->sb_hiwat < V_tcp_autosndbuf_max &&
|
|
sbspace(sb) < sb->sb_hiwat / 8 * 7) {
|
|
int newsize = min(sb->sb_hiwat + V_tcp_autosndbuf_inc,
|
|
V_tcp_autosndbuf_max);
|
|
|
|
if (!sbreserve_locked(sb, newsize, so, NULL))
|
|
sb->sb_flags &= ~SB_AUTOSIZE;
|
|
else {
|
|
sowwakeup_locked(so); /* room available */
|
|
SOCKBUF_UNLOCK_ASSERT(sb);
|
|
goto unlocked;
|
|
}
|
|
}
|
|
SOCKBUF_UNLOCK(sb);
|
|
unlocked:
|
|
|
|
/* nothing to send */
|
|
if (plen == 0) {
|
|
KASSERT(m == NULL,
|
|
("%s: nothing to send, but m != NULL", __func__));
|
|
break;
|
|
}
|
|
|
|
if (__predict_false(toep->flags & TPF_FIN_SENT))
|
|
panic("%s: excess tx.", __func__);
|
|
|
|
if (plen <= max_imm) {
|
|
|
|
/* Immediate data tx */
|
|
|
|
wr = alloc_wrqe(roundup(sizeof(*txwr) + plen, 16),
|
|
toep->ofld_txq);
|
|
if (wr == NULL) {
|
|
/* XXX: how will we recover from this? */
|
|
toep->flags |= TPF_TX_SUSPENDED;
|
|
return;
|
|
}
|
|
txwr = wrtod(wr);
|
|
credits = howmany(wr->wr_len, 16);
|
|
write_tx_wr(txwr, toep, plen, plen, credits,
|
|
tp->t_flags & TF_MORETOCOME);
|
|
m_copydata(sndptr, 0, plen, (void *)(txwr + 1));
|
|
} else {
|
|
int wr_len;
|
|
|
|
/* DSGL tx */
|
|
|
|
wr_len = sizeof(*txwr) + sizeof(struct ulptx_sgl) +
|
|
((3 * (nsegs - 1)) / 2 + ((nsegs - 1) & 1)) * 8;
|
|
wr = alloc_wrqe(roundup(wr_len, 16), toep->ofld_txq);
|
|
if (wr == NULL) {
|
|
/* XXX: how will we recover from this? */
|
|
toep->flags |= TPF_TX_SUSPENDED;
|
|
return;
|
|
}
|
|
txwr = wrtod(wr);
|
|
credits = howmany(wr_len, 16);
|
|
write_tx_wr(txwr, toep, 0, plen, credits,
|
|
tp->t_flags & TF_MORETOCOME);
|
|
write_tx_sgl(txwr + 1, sndptr, m, nsegs,
|
|
max_nsegs_1mbuf);
|
|
if (wr_len & 0xf) {
|
|
uint64_t *pad = (uint64_t *)
|
|
((uintptr_t)txwr + wr_len);
|
|
*pad = 0;
|
|
}
|
|
}
|
|
|
|
KASSERT(toep->tx_credits >= credits,
|
|
("%s: not enough credits", __func__));
|
|
|
|
toep->tx_credits -= credits;
|
|
|
|
tp->snd_nxt += plen;
|
|
tp->snd_max += plen;
|
|
|
|
SOCKBUF_LOCK(sb);
|
|
KASSERT(sb_sndptr, ("%s: sb_sndptr is NULL", __func__));
|
|
sb->sb_sndptr = sb_sndptr;
|
|
SOCKBUF_UNLOCK(sb);
|
|
|
|
toep->flags |= TPF_TX_DATA_SENT;
|
|
|
|
KASSERT(toep->txsd_avail > 0, ("%s: no txsd", __func__));
|
|
txsd->plen = plen;
|
|
txsd->tx_credits = credits;
|
|
txsd++;
|
|
if (__predict_false(++toep->txsd_pidx == toep->txsd_total)) {
|
|
toep->txsd_pidx = 0;
|
|
txsd = &toep->txsd[0];
|
|
}
|
|
toep->txsd_avail--;
|
|
|
|
t4_l2t_send(sc, wr, toep->l2te);
|
|
} while (m != NULL);
|
|
|
|
/* Send a FIN if requested, but only if there's no more data to send */
|
|
if (m == NULL && toep->flags & TPF_SEND_FIN)
|
|
close_conn(sc, toep);
|
|
}
|
|
|
|
int
|
|
t4_tod_output(struct toedev *tod, struct tcpcb *tp)
|
|
{
|
|
struct adapter *sc = tod->tod_softc;
|
|
#ifdef INVARIANTS
|
|
struct inpcb *inp = tp->t_inpcb;
|
|
#endif
|
|
struct toepcb *toep = tp->t_toe;
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
KASSERT((inp->inp_flags & INP_DROPPED) == 0,
|
|
("%s: inp %p dropped.", __func__, inp));
|
|
KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
|
|
|
|
t4_push_frames(sc, toep);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
t4_send_fin(struct toedev *tod, struct tcpcb *tp)
|
|
{
|
|
struct adapter *sc = tod->tod_softc;
|
|
#ifdef INVARIANTS
|
|
struct inpcb *inp = tp->t_inpcb;
|
|
#endif
|
|
struct toepcb *toep = tp->t_toe;
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
KASSERT((inp->inp_flags & INP_DROPPED) == 0,
|
|
("%s: inp %p dropped.", __func__, inp));
|
|
KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
|
|
|
|
toep->flags |= TPF_SEND_FIN;
|
|
t4_push_frames(sc, toep);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
t4_send_rst(struct toedev *tod, struct tcpcb *tp)
|
|
{
|
|
struct adapter *sc = tod->tod_softc;
|
|
#if defined(INVARIANTS)
|
|
struct inpcb *inp = tp->t_inpcb;
|
|
#endif
|
|
struct toepcb *toep = tp->t_toe;
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
KASSERT((inp->inp_flags & INP_DROPPED) == 0,
|
|
("%s: inp %p dropped.", __func__, inp));
|
|
KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
|
|
|
|
/* hmmmm */
|
|
KASSERT(toep->flags & TPF_FLOWC_WR_SENT,
|
|
("%s: flowc for tid %u [%s] not sent already",
|
|
__func__, toep->tid, tcpstates[tp->t_state]));
|
|
|
|
send_reset(sc, toep, 0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Peer has sent us a FIN.
|
|
*/
|
|
static int
|
|
do_peer_close(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_peer_close *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = GET_TID(cpl);
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct inpcb *inp = toep->inp;
|
|
struct tcpcb *tp = NULL;
|
|
struct socket *so;
|
|
struct sockbuf *sb;
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
KASSERT(opcode == CPL_PEER_CLOSE,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
|
|
if (__predict_false(toep->flags & TPF_SYNQE)) {
|
|
#ifdef INVARIANTS
|
|
struct synq_entry *synqe = (void *)toep;
|
|
|
|
INP_WLOCK(synqe->lctx->inp);
|
|
if (synqe->flags & TPF_SYNQE_HAS_L2TE) {
|
|
KASSERT(synqe->flags & TPF_ABORT_SHUTDOWN,
|
|
("%s: listen socket closed but tid %u not aborted.",
|
|
__func__, tid));
|
|
} else {
|
|
/*
|
|
* do_pass_accept_req is still running and will
|
|
* eventually take care of this tid.
|
|
*/
|
|
}
|
|
INP_WUNLOCK(synqe->lctx->inp);
|
|
#endif
|
|
CTR4(KTR_CXGBE, "%s: tid %u, synqe %p (0x%x)", __func__, tid,
|
|
toep, toep->flags);
|
|
return (0);
|
|
}
|
|
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
INP_INFO_WLOCK(&V_tcbinfo);
|
|
INP_WLOCK(inp);
|
|
tp = intotcpcb(inp);
|
|
|
|
CTR5(KTR_CXGBE, "%s: tid %u (%s), toep_flags 0x%x, inp %p", __func__,
|
|
tid, tp ? tcpstates[tp->t_state] : "no tp", toep->flags, inp);
|
|
|
|
if (toep->flags & TPF_ABORT_SHUTDOWN)
|
|
goto done;
|
|
|
|
tp->rcv_nxt++; /* FIN */
|
|
|
|
so = inp->inp_socket;
|
|
sb = &so->so_rcv;
|
|
SOCKBUF_LOCK(sb);
|
|
if (__predict_false(toep->ddp_flags & (DDP_BUF0_ACTIVE | DDP_BUF1_ACTIVE))) {
|
|
m = m_get(M_NOWAIT, MT_DATA);
|
|
if (m == NULL)
|
|
CXGBE_UNIMPLEMENTED("mbuf alloc failure");
|
|
|
|
m->m_len = be32toh(cpl->rcv_nxt) - tp->rcv_nxt;
|
|
m->m_flags |= M_DDP; /* Data is already where it should be */
|
|
m->m_data = "nothing to see here";
|
|
tp->rcv_nxt = be32toh(cpl->rcv_nxt);
|
|
|
|
toep->ddp_flags &= ~(DDP_BUF0_ACTIVE | DDP_BUF1_ACTIVE);
|
|
|
|
KASSERT(toep->sb_cc >= sb->sb_cc,
|
|
("%s: sb %p has more data (%d) than last time (%d).",
|
|
__func__, sb, sb->sb_cc, toep->sb_cc));
|
|
toep->rx_credits += toep->sb_cc - sb->sb_cc;
|
|
#ifdef USE_DDP_RX_FLOW_CONTROL
|
|
toep->rx_credits -= m->m_len; /* adjust for F_RX_FC_DDP */
|
|
#endif
|
|
sbappendstream_locked(sb, m);
|
|
toep->sb_cc = sb->sb_cc;
|
|
}
|
|
socantrcvmore_locked(so); /* unlocks the sockbuf */
|
|
|
|
KASSERT(tp->rcv_nxt == be32toh(cpl->rcv_nxt),
|
|
("%s: rcv_nxt mismatch: %u %u", __func__, tp->rcv_nxt,
|
|
be32toh(cpl->rcv_nxt)));
|
|
|
|
switch (tp->t_state) {
|
|
case TCPS_SYN_RECEIVED:
|
|
tp->t_starttime = ticks;
|
|
/* FALLTHROUGH */
|
|
|
|
case TCPS_ESTABLISHED:
|
|
tp->t_state = TCPS_CLOSE_WAIT;
|
|
break;
|
|
|
|
case TCPS_FIN_WAIT_1:
|
|
tp->t_state = TCPS_CLOSING;
|
|
break;
|
|
|
|
case TCPS_FIN_WAIT_2:
|
|
tcp_twstart(tp);
|
|
INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
|
|
INP_WLOCK(inp);
|
|
final_cpl_received(toep);
|
|
return (0);
|
|
|
|
default:
|
|
log(LOG_ERR, "%s: TID %u received CPL_PEER_CLOSE in state %d\n",
|
|
__func__, tid, tp->t_state);
|
|
}
|
|
done:
|
|
INP_WUNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Peer has ACK'd our FIN.
|
|
*/
|
|
static int
|
|
do_close_con_rpl(struct sge_iq *iq, const struct rss_header *rss,
|
|
struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_close_con_rpl *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = GET_TID(cpl);
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct inpcb *inp = toep->inp;
|
|
struct tcpcb *tp = NULL;
|
|
struct socket *so = NULL;
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
KASSERT(opcode == CPL_CLOSE_CON_RPL,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
INP_INFO_WLOCK(&V_tcbinfo);
|
|
INP_WLOCK(inp);
|
|
tp = intotcpcb(inp);
|
|
|
|
CTR4(KTR_CXGBE, "%s: tid %u (%s), toep_flags 0x%x",
|
|
__func__, tid, tp ? tcpstates[tp->t_state] : "no tp", toep->flags);
|
|
|
|
if (toep->flags & TPF_ABORT_SHUTDOWN)
|
|
goto done;
|
|
|
|
so = inp->inp_socket;
|
|
tp->snd_una = be32toh(cpl->snd_nxt) - 1; /* exclude FIN */
|
|
|
|
switch (tp->t_state) {
|
|
case TCPS_CLOSING: /* see TCPS_FIN_WAIT_2 in do_peer_close too */
|
|
tcp_twstart(tp);
|
|
release:
|
|
INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
|
|
INP_WLOCK(inp);
|
|
final_cpl_received(toep); /* no more CPLs expected */
|
|
|
|
return (0);
|
|
case TCPS_LAST_ACK:
|
|
if (tcp_close(tp))
|
|
INP_WUNLOCK(inp);
|
|
goto release;
|
|
|
|
case TCPS_FIN_WAIT_1:
|
|
if (so->so_rcv.sb_state & SBS_CANTRCVMORE)
|
|
soisdisconnected(so);
|
|
tp->t_state = TCPS_FIN_WAIT_2;
|
|
break;
|
|
|
|
default:
|
|
log(LOG_ERR,
|
|
"%s: TID %u received CPL_CLOSE_CON_RPL in state %s\n",
|
|
__func__, tid, tcpstates[tp->t_state]);
|
|
}
|
|
done:
|
|
INP_WUNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
send_abort_rpl(struct adapter *sc, struct sge_wrq *ofld_txq, int tid,
|
|
int rst_status)
|
|
{
|
|
struct wrqe *wr;
|
|
struct cpl_abort_rpl *cpl;
|
|
|
|
wr = alloc_wrqe(sizeof(*cpl), ofld_txq);
|
|
if (wr == NULL) {
|
|
/* XXX */
|
|
panic("%s: allocation failure.", __func__);
|
|
}
|
|
cpl = wrtod(wr);
|
|
|
|
INIT_TP_WR_MIT_CPL(cpl, CPL_ABORT_RPL, tid);
|
|
cpl->cmd = rst_status;
|
|
|
|
t4_wrq_tx(sc, wr);
|
|
}
|
|
|
|
static int
|
|
abort_status_to_errno(struct tcpcb *tp, unsigned int abort_reason)
|
|
{
|
|
switch (abort_reason) {
|
|
case CPL_ERR_BAD_SYN:
|
|
case CPL_ERR_CONN_RESET:
|
|
return (tp->t_state == TCPS_CLOSE_WAIT ? EPIPE : ECONNRESET);
|
|
case CPL_ERR_XMIT_TIMEDOUT:
|
|
case CPL_ERR_PERSIST_TIMEDOUT:
|
|
case CPL_ERR_FINWAIT2_TIMEDOUT:
|
|
case CPL_ERR_KEEPALIVE_TIMEDOUT:
|
|
return (ETIMEDOUT);
|
|
default:
|
|
return (EIO);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* TCP RST from the peer, timeout, or some other such critical error.
|
|
*/
|
|
static int
|
|
do_abort_req(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_abort_req_rss *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = GET_TID(cpl);
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct sge_wrq *ofld_txq = toep->ofld_txq;
|
|
struct inpcb *inp;
|
|
struct tcpcb *tp;
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
KASSERT(opcode == CPL_ABORT_REQ_RSS,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
|
|
if (toep->flags & TPF_SYNQE)
|
|
return (do_abort_req_synqe(iq, rss, m));
|
|
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
if (negative_advice(cpl->status)) {
|
|
CTR4(KTR_CXGBE, "%s: negative advice %d for tid %d (0x%x)",
|
|
__func__, cpl->status, tid, toep->flags);
|
|
return (0); /* Ignore negative advice */
|
|
}
|
|
|
|
inp = toep->inp;
|
|
INP_INFO_WLOCK(&V_tcbinfo); /* for tcp_close */
|
|
INP_WLOCK(inp);
|
|
|
|
tp = intotcpcb(inp);
|
|
|
|
CTR6(KTR_CXGBE,
|
|
"%s: tid %d (%s), toep_flags 0x%x, inp_flags 0x%x, status %d",
|
|
__func__, tid, tp ? tcpstates[tp->t_state] : "no tp", toep->flags,
|
|
inp->inp_flags, cpl->status);
|
|
|
|
/*
|
|
* If we'd initiated an abort earlier the reply to it is responsible for
|
|
* cleaning up resources. Otherwise we tear everything down right here
|
|
* right now. We owe the T4 a CPL_ABORT_RPL no matter what.
|
|
*/
|
|
if (toep->flags & TPF_ABORT_SHUTDOWN) {
|
|
INP_WUNLOCK(inp);
|
|
goto done;
|
|
}
|
|
toep->flags |= TPF_ABORT_SHUTDOWN;
|
|
|
|
if ((inp->inp_flags & (INP_DROPPED | INP_TIMEWAIT)) == 0) {
|
|
struct socket *so = inp->inp_socket;
|
|
|
|
if (so != NULL)
|
|
so_error_set(so, abort_status_to_errno(tp,
|
|
cpl->status));
|
|
tp = tcp_close(tp);
|
|
if (tp == NULL)
|
|
INP_WLOCK(inp); /* re-acquire */
|
|
}
|
|
|
|
final_cpl_received(toep);
|
|
done:
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
send_abort_rpl(sc, ofld_txq, tid, CPL_ABORT_NO_RST);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Reply to the CPL_ABORT_REQ (send_reset)
|
|
*/
|
|
static int
|
|
do_abort_rpl(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_abort_rpl_rss *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = GET_TID(cpl);
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct inpcb *inp = toep->inp;
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
KASSERT(opcode == CPL_ABORT_RPL_RSS,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
|
|
if (toep->flags & TPF_SYNQE)
|
|
return (do_abort_rpl_synqe(iq, rss, m));
|
|
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
CTR5(KTR_CXGBE, "%s: tid %u, toep %p, inp %p, status %d",
|
|
__func__, tid, toep, inp, cpl->status);
|
|
|
|
KASSERT(toep->flags & TPF_ABORT_SHUTDOWN,
|
|
("%s: wasn't expecting abort reply", __func__));
|
|
|
|
INP_WLOCK(inp);
|
|
final_cpl_received(toep);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
do_rx_data(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_rx_data *cpl = mtod(m, const void *);
|
|
unsigned int tid = GET_TID(cpl);
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct inpcb *inp = toep->inp;
|
|
struct tcpcb *tp;
|
|
struct socket *so;
|
|
struct sockbuf *sb;
|
|
int len;
|
|
uint32_t ddp_placed = 0;
|
|
|
|
if (__predict_false(toep->flags & TPF_SYNQE)) {
|
|
#ifdef INVARIANTS
|
|
struct synq_entry *synqe = (void *)toep;
|
|
|
|
INP_WLOCK(synqe->lctx->inp);
|
|
if (synqe->flags & TPF_SYNQE_HAS_L2TE) {
|
|
KASSERT(synqe->flags & TPF_ABORT_SHUTDOWN,
|
|
("%s: listen socket closed but tid %u not aborted.",
|
|
__func__, tid));
|
|
} else {
|
|
/*
|
|
* do_pass_accept_req is still running and will
|
|
* eventually take care of this tid.
|
|
*/
|
|
}
|
|
INP_WUNLOCK(synqe->lctx->inp);
|
|
#endif
|
|
CTR4(KTR_CXGBE, "%s: tid %u, synqe %p (0x%x)", __func__, tid,
|
|
toep, toep->flags);
|
|
m_freem(m);
|
|
return (0);
|
|
}
|
|
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
/* strip off CPL header */
|
|
m_adj(m, sizeof(*cpl));
|
|
len = m->m_pkthdr.len;
|
|
|
|
INP_WLOCK(inp);
|
|
if (inp->inp_flags & (INP_DROPPED | INP_TIMEWAIT)) {
|
|
CTR4(KTR_CXGBE, "%s: tid %u, rx (%d bytes), inp_flags 0x%x",
|
|
__func__, tid, len, inp->inp_flags);
|
|
INP_WUNLOCK(inp);
|
|
m_freem(m);
|
|
return (0);
|
|
}
|
|
|
|
tp = intotcpcb(inp);
|
|
|
|
if (__predict_false(tp->rcv_nxt != be32toh(cpl->seq)))
|
|
ddp_placed = be32toh(cpl->seq) - tp->rcv_nxt;
|
|
|
|
tp->rcv_nxt += len;
|
|
KASSERT(tp->rcv_wnd >= len, ("%s: negative window size", __func__));
|
|
tp->rcv_wnd -= len;
|
|
tp->t_rcvtime = ticks;
|
|
|
|
so = inp_inpcbtosocket(inp);
|
|
sb = &so->so_rcv;
|
|
SOCKBUF_LOCK(sb);
|
|
|
|
if (__predict_false(sb->sb_state & SBS_CANTRCVMORE)) {
|
|
CTR3(KTR_CXGBE, "%s: tid %u, excess rx (%d bytes)",
|
|
__func__, tid, len);
|
|
m_freem(m);
|
|
SOCKBUF_UNLOCK(sb);
|
|
INP_WUNLOCK(inp);
|
|
|
|
INP_INFO_WLOCK(&V_tcbinfo);
|
|
INP_WLOCK(inp);
|
|
tp = tcp_drop(tp, ECONNRESET);
|
|
if (tp)
|
|
INP_WUNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&V_tcbinfo);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* receive buffer autosize */
|
|
if (sb->sb_flags & SB_AUTOSIZE &&
|
|
V_tcp_do_autorcvbuf &&
|
|
sb->sb_hiwat < V_tcp_autorcvbuf_max &&
|
|
len > (sbspace(sb) / 8 * 7)) {
|
|
unsigned int hiwat = sb->sb_hiwat;
|
|
unsigned int newsize = min(hiwat + V_tcp_autorcvbuf_inc,
|
|
V_tcp_autorcvbuf_max);
|
|
|
|
if (!sbreserve_locked(sb, newsize, so, NULL))
|
|
sb->sb_flags &= ~SB_AUTOSIZE;
|
|
else
|
|
toep->rx_credits += newsize - hiwat;
|
|
}
|
|
|
|
if (toep->ulp_mode == ULP_MODE_TCPDDP) {
|
|
int changed = !(toep->ddp_flags & DDP_ON) ^ cpl->ddp_off;
|
|
|
|
if (changed) {
|
|
if (toep->ddp_flags & DDP_SC_REQ)
|
|
toep->ddp_flags ^= DDP_ON | DDP_SC_REQ;
|
|
else {
|
|
KASSERT(cpl->ddp_off == 1,
|
|
("%s: DDP switched on by itself.",
|
|
__func__));
|
|
|
|
/* Fell out of DDP mode */
|
|
toep->ddp_flags &= ~(DDP_ON | DDP_BUF0_ACTIVE |
|
|
DDP_BUF1_ACTIVE);
|
|
|
|
if (ddp_placed)
|
|
insert_ddp_data(toep, ddp_placed);
|
|
}
|
|
}
|
|
|
|
if ((toep->ddp_flags & DDP_OK) == 0 &&
|
|
time_uptime >= toep->ddp_disabled + DDP_RETRY_WAIT) {
|
|
toep->ddp_score = DDP_LOW_SCORE;
|
|
toep->ddp_flags |= DDP_OK;
|
|
CTR3(KTR_CXGBE, "%s: tid %u DDP_OK @ %u",
|
|
__func__, tid, time_uptime);
|
|
}
|
|
|
|
if (toep->ddp_flags & DDP_ON) {
|
|
|
|
/*
|
|
* CPL_RX_DATA with DDP on can only be an indicate. Ask
|
|
* soreceive to post a buffer or disable DDP. The
|
|
* payload that arrived in this indicate is appended to
|
|
* the socket buffer as usual.
|
|
*/
|
|
|
|
#if 0
|
|
CTR5(KTR_CXGBE,
|
|
"%s: tid %u (0x%x) DDP indicate (seq 0x%x, len %d)",
|
|
__func__, tid, toep->flags, be32toh(cpl->seq), len);
|
|
#endif
|
|
sb->sb_flags |= SB_DDP_INDICATE;
|
|
} else if ((toep->ddp_flags & (DDP_OK|DDP_SC_REQ)) == DDP_OK &&
|
|
tp->rcv_wnd > DDP_RSVD_WIN && len >= sc->tt.ddp_thres) {
|
|
|
|
/*
|
|
* DDP allowed but isn't on (and a request to switch it
|
|
* on isn't pending either), and conditions are ripe for
|
|
* it to work. Switch it on.
|
|
*/
|
|
|
|
enable_ddp(sc, toep);
|
|
}
|
|
}
|
|
|
|
KASSERT(toep->sb_cc >= sb->sb_cc,
|
|
("%s: sb %p has more data (%d) than last time (%d).",
|
|
__func__, sb, sb->sb_cc, toep->sb_cc));
|
|
toep->rx_credits += toep->sb_cc - sb->sb_cc;
|
|
sbappendstream_locked(sb, m);
|
|
toep->sb_cc = sb->sb_cc;
|
|
sorwakeup_locked(so);
|
|
SOCKBUF_UNLOCK_ASSERT(sb);
|
|
|
|
INP_WUNLOCK(inp);
|
|
return (0);
|
|
}
|
|
|
|
#define S_CPL_FW4_ACK_OPCODE 24
|
|
#define M_CPL_FW4_ACK_OPCODE 0xff
|
|
#define V_CPL_FW4_ACK_OPCODE(x) ((x) << S_CPL_FW4_ACK_OPCODE)
|
|
#define G_CPL_FW4_ACK_OPCODE(x) \
|
|
(((x) >> S_CPL_FW4_ACK_OPCODE) & M_CPL_FW4_ACK_OPCODE)
|
|
|
|
#define S_CPL_FW4_ACK_FLOWID 0
|
|
#define M_CPL_FW4_ACK_FLOWID 0xffffff
|
|
#define V_CPL_FW4_ACK_FLOWID(x) ((x) << S_CPL_FW4_ACK_FLOWID)
|
|
#define G_CPL_FW4_ACK_FLOWID(x) \
|
|
(((x) >> S_CPL_FW4_ACK_FLOWID) & M_CPL_FW4_ACK_FLOWID)
|
|
|
|
#define S_CPL_FW4_ACK_CR 24
|
|
#define M_CPL_FW4_ACK_CR 0xff
|
|
#define V_CPL_FW4_ACK_CR(x) ((x) << S_CPL_FW4_ACK_CR)
|
|
#define G_CPL_FW4_ACK_CR(x) (((x) >> S_CPL_FW4_ACK_CR) & M_CPL_FW4_ACK_CR)
|
|
|
|
#define S_CPL_FW4_ACK_SEQVAL 0
|
|
#define M_CPL_FW4_ACK_SEQVAL 0x1
|
|
#define V_CPL_FW4_ACK_SEQVAL(x) ((x) << S_CPL_FW4_ACK_SEQVAL)
|
|
#define G_CPL_FW4_ACK_SEQVAL(x) \
|
|
(((x) >> S_CPL_FW4_ACK_SEQVAL) & M_CPL_FW4_ACK_SEQVAL)
|
|
#define F_CPL_FW4_ACK_SEQVAL V_CPL_FW4_ACK_SEQVAL(1U)
|
|
|
|
static int
|
|
do_fw4_ack(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_fw4_ack *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = G_CPL_FW4_ACK_FLOWID(be32toh(OPCODE_TID(cpl)));
|
|
struct toepcb *toep = lookup_tid(sc, tid);
|
|
struct inpcb *inp;
|
|
struct tcpcb *tp;
|
|
struct socket *so;
|
|
uint8_t credits = cpl->credits;
|
|
struct ofld_tx_sdesc *txsd;
|
|
int plen;
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_FW4_ACK_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
/*
|
|
* Very unusual case: we'd sent a flowc + abort_req for a synq entry and
|
|
* now this comes back carrying the credits for the flowc.
|
|
*/
|
|
if (__predict_false(toep->flags & TPF_SYNQE)) {
|
|
KASSERT(toep->flags & TPF_ABORT_SHUTDOWN,
|
|
("%s: credits for a synq entry %p", __func__, toep));
|
|
return (0);
|
|
}
|
|
|
|
inp = toep->inp;
|
|
|
|
KASSERT(opcode == CPL_FW4_ACK,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__));
|
|
|
|
INP_WLOCK(inp);
|
|
|
|
if (__predict_false(toep->flags & TPF_ABORT_SHUTDOWN)) {
|
|
INP_WUNLOCK(inp);
|
|
return (0);
|
|
}
|
|
|
|
KASSERT((inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) == 0,
|
|
("%s: inp_flags 0x%x", __func__, inp->inp_flags));
|
|
|
|
tp = intotcpcb(inp);
|
|
|
|
if (cpl->flags & CPL_FW4_ACK_FLAGS_SEQVAL) {
|
|
tcp_seq snd_una = be32toh(cpl->snd_una);
|
|
|
|
#ifdef INVARIANTS
|
|
if (__predict_false(SEQ_LT(snd_una, tp->snd_una))) {
|
|
log(LOG_ERR,
|
|
"%s: unexpected seq# %x for TID %u, snd_una %x\n",
|
|
__func__, snd_una, toep->tid, tp->snd_una);
|
|
}
|
|
#endif
|
|
|
|
if (tp->snd_una != snd_una) {
|
|
tp->snd_una = snd_una;
|
|
tp->ts_recent_age = tcp_ts_getticks();
|
|
}
|
|
}
|
|
|
|
so = inp->inp_socket;
|
|
txsd = &toep->txsd[toep->txsd_cidx];
|
|
plen = 0;
|
|
while (credits) {
|
|
KASSERT(credits >= txsd->tx_credits,
|
|
("%s: too many (or partial) credits", __func__));
|
|
credits -= txsd->tx_credits;
|
|
toep->tx_credits += txsd->tx_credits;
|
|
plen += txsd->plen;
|
|
txsd++;
|
|
toep->txsd_avail++;
|
|
KASSERT(toep->txsd_avail <= toep->txsd_total,
|
|
("%s: txsd avail > total", __func__));
|
|
if (__predict_false(++toep->txsd_cidx == toep->txsd_total)) {
|
|
txsd = &toep->txsd[0];
|
|
toep->txsd_cidx = 0;
|
|
}
|
|
}
|
|
|
|
if (plen > 0) {
|
|
struct sockbuf *sb = &so->so_snd;
|
|
|
|
SOCKBUF_LOCK(sb);
|
|
sbdrop_locked(sb, plen);
|
|
sowwakeup_locked(so);
|
|
SOCKBUF_UNLOCK_ASSERT(sb);
|
|
}
|
|
|
|
/* XXX */
|
|
if ((toep->flags & TPF_TX_SUSPENDED &&
|
|
toep->tx_credits >= MIN_OFLD_TX_CREDITS) ||
|
|
toep->tx_credits == toep->txsd_total *
|
|
howmany((sizeof(struct fw_ofld_tx_data_wr) + 1), 16)) {
|
|
toep->flags &= ~TPF_TX_SUSPENDED;
|
|
t4_push_frames(sc, toep);
|
|
}
|
|
INP_WUNLOCK(inp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
do_set_tcb_rpl(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_set_tcb_rpl *cpl = (const void *)(rss + 1);
|
|
unsigned int tid = GET_TID(cpl);
|
|
#ifdef INVARIANTS
|
|
unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl)));
|
|
#endif
|
|
|
|
KASSERT(opcode == CPL_SET_TCB_RPL,
|
|
("%s: unexpected opcode 0x%x", __func__, opcode));
|
|
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
|
|
|
|
if (tid >= sc->tids.ftid_base &&
|
|
tid < sc->tids.ftid_base + sc->tids.nftids)
|
|
return (t4_filter_rpl(iq, rss, m)); /* TCB is a filter */
|
|
|
|
CXGBE_UNIMPLEMENTED(__func__);
|
|
}
|
|
|
|
void
|
|
t4_set_tcb_field(struct adapter *sc, struct toepcb *toep, uint16_t word,
|
|
uint64_t mask, uint64_t val)
|
|
{
|
|
struct wrqe *wr;
|
|
struct cpl_set_tcb_field *req;
|
|
|
|
wr = alloc_wrqe(sizeof(*req), toep->ctrlq);
|
|
if (wr == NULL) {
|
|
/* XXX */
|
|
panic("%s: allocation failure.", __func__);
|
|
}
|
|
req = wrtod(wr);
|
|
|
|
INIT_TP_WR_MIT_CPL(req, CPL_SET_TCB_FIELD, toep->tid);
|
|
req->reply_ctrl = htobe16(V_NO_REPLY(1) |
|
|
V_QUEUENO(toep->ofld_rxq->iq.abs_id));
|
|
req->word_cookie = htobe16(V_WORD(word) | V_COOKIE(0));
|
|
req->mask = htobe64(mask);
|
|
req->val = htobe64(val);
|
|
|
|
t4_wrq_tx(sc, wr);
|
|
}
|
|
|
|
void
|
|
t4_init_cpl_io_handlers(struct adapter *sc)
|
|
{
|
|
|
|
t4_register_cpl_handler(sc, CPL_PEER_CLOSE, do_peer_close);
|
|
t4_register_cpl_handler(sc, CPL_CLOSE_CON_RPL, do_close_con_rpl);
|
|
t4_register_cpl_handler(sc, CPL_ABORT_REQ_RSS, do_abort_req);
|
|
t4_register_cpl_handler(sc, CPL_ABORT_RPL_RSS, do_abort_rpl);
|
|
t4_register_cpl_handler(sc, CPL_RX_DATA, do_rx_data);
|
|
t4_register_cpl_handler(sc, CPL_FW4_ACK, do_fw4_ack);
|
|
t4_register_cpl_handler(sc, CPL_SET_TCB_RPL, do_set_tcb_rpl);
|
|
}
|
|
|
|
void
|
|
t4_uninit_cpl_io_handlers(struct adapter *sc)
|
|
{
|
|
|
|
t4_register_cpl_handler(sc, CPL_SET_TCB_RPL, t4_filter_rpl);
|
|
}
|
|
#endif
|