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-rw-r--r--sys/dev/cxgbe/iw_cxgbe/cm.c2458
1 files changed, 2458 insertions, 0 deletions
diff --git a/sys/dev/cxgbe/iw_cxgbe/cm.c b/sys/dev/cxgbe/iw_cxgbe/cm.c
new file mode 100644
index 0000000..03652a3
--- /dev/null
+++ b/sys/dev/cxgbe/iw_cxgbe/cm.c
@@ -0,0 +1,2458 @@
+/*
+ * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "opt_inet.h"
+
+#ifdef TCP_OFFLOAD
+#include <sys/types.h>
+#include <sys/malloc.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/sockio.h>
+#include <sys/taskqueue.h>
+#include <netinet/in.h>
+#include <net/neighbour.h>
+#include <net/route.h>
+
+#include <netinet/in_systm.h>
+#include <netinet/in_pcb.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/tcp_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#include <netinet/toecore.h>
+
+struct sge_iq;
+struct rss_header;
+#include <linux/types.h>
+#include "offload.h"
+#include "tom/t4_tom.h"
+
+#define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe))
+
+#include "iw_cxgbe.h"
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/notifier.h>
+#include <linux/inetdevice.h>
+#include <linux/if_vlan.h>
+#include <net/netevent.h>
+
+static spinlock_t req_lock;
+static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list;
+static struct work_struct c4iw_task;
+static struct workqueue_struct *c4iw_taskq;
+static LIST_HEAD(timeout_list);
+static spinlock_t timeout_lock;
+
+static void process_req(struct work_struct *ctx);
+static void start_ep_timer(struct c4iw_ep *ep);
+static void stop_ep_timer(struct c4iw_ep *ep);
+static int set_tcpinfo(struct c4iw_ep *ep);
+static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc);
+static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate);
+static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate);
+static void *alloc_ep(int size, gfp_t flags);
+void __free_ep(struct c4iw_ep_common *epc);
+static struct rtentry * find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port,
+ __be16 peer_port, u8 tos);
+static int close_socket(struct c4iw_ep_common *epc, int close);
+static int shutdown_socket(struct c4iw_ep_common *epc);
+static void abort_socket(struct c4iw_ep *ep);
+static void send_mpa_req(struct c4iw_ep *ep);
+static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen);
+static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen);
+static void close_complete_upcall(struct c4iw_ep *ep);
+static int abort_connection(struct c4iw_ep *ep);
+static void peer_close_upcall(struct c4iw_ep *ep);
+static void peer_abort_upcall(struct c4iw_ep *ep);
+static void connect_reply_upcall(struct c4iw_ep *ep, int status);
+static void connect_request_upcall(struct c4iw_ep *ep);
+static void established_upcall(struct c4iw_ep *ep);
+static void process_mpa_reply(struct c4iw_ep *ep);
+static void process_mpa_request(struct c4iw_ep *ep);
+static void process_peer_close(struct c4iw_ep *ep);
+static void process_conn_error(struct c4iw_ep *ep);
+static void process_close_complete(struct c4iw_ep *ep);
+static void ep_timeout(unsigned long arg);
+static void init_sock(struct c4iw_ep_common *epc);
+static void process_data(struct c4iw_ep *ep);
+static void process_connected(struct c4iw_ep *ep);
+static struct socket * dequeue_socket(struct socket *head, struct sockaddr_in **remote, struct c4iw_ep *child_ep);
+static void process_newconn(struct c4iw_ep *parent_ep);
+static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag);
+static void process_socket_event(struct c4iw_ep *ep);
+static void release_ep_resources(struct c4iw_ep *ep);
+
+#define START_EP_TIMER(ep) \
+ do { \
+ CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \
+ __func__, __LINE__, (ep)); \
+ start_ep_timer(ep); \
+ } while (0)
+
+#define STOP_EP_TIMER(ep) \
+ do { \
+ CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \
+ __func__, __LINE__, (ep)); \
+ stop_ep_timer(ep); \
+ } while (0)
+
+#ifdef KTR
+static char *states[] = {
+ "idle",
+ "listen",
+ "connecting",
+ "mpa_wait_req",
+ "mpa_req_sent",
+ "mpa_req_rcvd",
+ "mpa_rep_sent",
+ "fpdu_mode",
+ "aborting",
+ "closing",
+ "moribund",
+ "dead",
+ NULL,
+};
+#endif
+
+static void
+process_req(struct work_struct *ctx)
+{
+ struct c4iw_ep_common *epc;
+
+ spin_lock(&req_lock);
+ while (!TAILQ_EMPTY(&req_list)) {
+ epc = TAILQ_FIRST(&req_list);
+ TAILQ_REMOVE(&req_list, epc, entry);
+ epc->entry.tqe_prev = NULL;
+ spin_unlock(&req_lock);
+ if (epc->so)
+ process_socket_event((struct c4iw_ep *)epc);
+ c4iw_put_ep(epc);
+ spin_lock(&req_lock);
+ }
+ spin_unlock(&req_lock);
+}
+
+/*
+ * XXX: doesn't belong here in the iWARP driver.
+ * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is
+ * set. Is this a valid assumption for active open?
+ */
+static int
+set_tcpinfo(struct c4iw_ep *ep)
+{
+ struct socket *so = ep->com.so;
+ struct inpcb *inp = sotoinpcb(so);
+ struct tcpcb *tp;
+ struct toepcb *toep;
+ int rc = 0;
+
+ INP_WLOCK(inp);
+ tp = intotcpcb(inp);
+ if ((tp->t_flags & TF_TOE) == 0) {
+ rc = EINVAL;
+ log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n",
+ __func__, so, ep);
+ goto done;
+ }
+ toep = TOEPCB(so);
+
+ ep->hwtid = toep->tid;
+ ep->snd_seq = tp->snd_nxt;
+ ep->rcv_seq = tp->rcv_nxt;
+ ep->emss = max(tp->t_maxseg, 128);
+done:
+ INP_WUNLOCK(inp);
+ return (rc);
+
+}
+
+static struct rtentry *
+find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port,
+ __be16 peer_port, u8 tos)
+{
+ struct route iproute;
+ struct sockaddr_in *dst = (struct sockaddr_in *)&iproute.ro_dst;
+
+ CTR5(KTR_IW_CXGBE, "%s:frtB %x, %x, %d, %d", __func__, local_ip,
+ peer_ip, ntohs(local_port), ntohs(peer_port));
+ bzero(&iproute, sizeof iproute);
+ dst->sin_family = AF_INET;
+ dst->sin_len = sizeof *dst;
+ dst->sin_addr.s_addr = peer_ip;
+
+ rtalloc(&iproute);
+ CTR2(KTR_IW_CXGBE, "%s:frtE %p", __func__, (uint64_t)iproute.ro_rt);
+ return iproute.ro_rt;
+}
+
+static int
+close_socket(struct c4iw_ep_common *epc, int close)
+{
+ struct socket *so = epc->so;
+ int rc;
+
+ CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc, so,
+ states[epc->state]);
+
+ SOCK_LOCK(so);
+ soupcall_clear(so, SO_RCV);
+ SOCK_UNLOCK(so);
+
+ if (close)
+ rc = soclose(so);
+ else
+ rc = soshutdown(so, SHUT_WR | SHUT_RD);
+ epc->so = NULL;
+
+ return (rc);
+}
+
+static int
+shutdown_socket(struct c4iw_ep_common *epc)
+{
+
+ CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc->so, epc,
+ states[epc->state]);
+
+ return (soshutdown(epc->so, SHUT_WR));
+}
+
+static void
+abort_socket(struct c4iw_ep *ep)
+{
+ struct sockopt sopt;
+ int rc;
+ struct linger l;
+
+ CTR4(KTR_IW_CXGBE, "%s ep %p so %p state %s", __func__, ep, ep->com.so,
+ states[ep->com.state]);
+
+ l.l_onoff = 1;
+ l.l_linger = 0;
+
+ /* linger_time of 0 forces RST to be sent */
+ sopt.sopt_dir = SOPT_SET;
+ sopt.sopt_level = SOL_SOCKET;
+ sopt.sopt_name = SO_LINGER;
+ sopt.sopt_val = (caddr_t)&l;
+ sopt.sopt_valsize = sizeof l;
+ sopt.sopt_td = NULL;
+ rc = sosetopt(ep->com.so, &sopt);
+ if (rc) {
+ log(LOG_ERR, "%s: can't set linger to 0, no RST! err %d\n",
+ __func__, rc);
+ }
+}
+
+static void
+process_peer_close(struct c4iw_ep *ep)
+{
+ struct c4iw_qp_attributes attrs;
+ int disconnect = 1;
+ int release = 0;
+
+ CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep,
+ ep->com.so, states[ep->com.state]);
+
+ mutex_lock(&ep->com.mutex);
+ switch (ep->com.state) {
+
+ case MPA_REQ_WAIT:
+ CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT CLOSING",
+ __func__, ep);
+ __state_set(&ep->com, CLOSING);
+ break;
+
+ case MPA_REQ_SENT:
+ CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT CLOSING",
+ __func__, ep);
+ __state_set(&ep->com, DEAD);
+ connect_reply_upcall(ep, -ECONNABORTED);
+
+ disconnect = 0;
+ STOP_EP_TIMER(ep);
+ close_socket(&ep->com, 0);
+ ep->com.cm_id->rem_ref(ep->com.cm_id);
+ ep->com.cm_id = NULL;
+ ep->com.qp = NULL;
+ release = 1;
+ break;
+
+ case MPA_REQ_RCVD:
+
+ /*
+ * We're gonna mark this puppy DEAD, but keep
+ * the reference on it until the ULP accepts or
+ * rejects the CR.
+ */
+ CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING",
+ __func__, ep);
+ __state_set(&ep->com, CLOSING);
+ c4iw_get_ep(&ep->com);
+ break;
+
+ case MPA_REP_SENT:
+ CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING",
+ __func__, ep);
+ __state_set(&ep->com, CLOSING);
+ break;
+
+ case FPDU_MODE:
+ CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING",
+ __func__, ep);
+ START_EP_TIMER(ep);
+ __state_set(&ep->com, CLOSING);
+ attrs.next_state = C4IW_QP_STATE_CLOSING;
+ c4iw_modify_qp(ep->com.dev, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
+ peer_close_upcall(ep);
+ break;
+
+ case ABORTING:
+ CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)",
+ __func__, ep);
+ disconnect = 0;
+ break;
+
+ case CLOSING:
+ CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND",
+ __func__, ep);
+ __state_set(&ep->com, MORIBUND);
+ disconnect = 0;
+ break;
+
+ case MORIBUND:
+ CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__,
+ ep);
+ STOP_EP_TIMER(ep);
+ if (ep->com.cm_id && ep->com.qp) {
+ attrs.next_state = C4IW_QP_STATE_IDLE;
+ c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
+ }
+ close_socket(&ep->com, 0);
+ close_complete_upcall(ep);
+ __state_set(&ep->com, DEAD);
+ release = 1;
+ disconnect = 0;
+ break;
+
+ case DEAD:
+ CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)",
+ __func__, ep);
+ disconnect = 0;
+ break;
+
+ default:
+ panic("%s: ep %p state %d", __func__, ep,
+ ep->com.state);
+ break;
+ }
+
+ mutex_unlock(&ep->com.mutex);
+
+ if (disconnect) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep);
+ c4iw_ep_disconnect(ep, 0, M_NOWAIT);
+ }
+ if (release) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep);
+ c4iw_put_ep(&ep->com);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep);
+ return;
+}
+
+static void
+process_conn_error(struct c4iw_ep *ep)
+{
+ struct c4iw_qp_attributes attrs;
+ int ret;
+ int state;
+
+ state = state_read(&ep->com);
+ CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s",
+ __func__, ep, ep->com.so, ep->com.so->so_error,
+ states[ep->com.state]);
+
+ switch (state) {
+
+ case MPA_REQ_WAIT:
+ STOP_EP_TIMER(ep);
+ break;
+
+ case MPA_REQ_SENT:
+ STOP_EP_TIMER(ep);
+ connect_reply_upcall(ep, -ECONNRESET);
+ break;
+
+ case MPA_REP_SENT:
+ ep->com.rpl_err = ECONNRESET;
+ CTR1(KTR_IW_CXGBE, "waking up ep %p", ep);
+ break;
+
+ case MPA_REQ_RCVD:
+
+ /*
+ * We're gonna mark this puppy DEAD, but keep
+ * the reference on it until the ULP accepts or
+ * rejects the CR.
+ */
+ c4iw_get_ep(&ep->com);
+ break;
+
+ case MORIBUND:
+ case CLOSING:
+ STOP_EP_TIMER(ep);
+ /*FALLTHROUGH*/
+ case FPDU_MODE:
+
+ if (ep->com.cm_id && ep->com.qp) {
+
+ attrs.next_state = C4IW_QP_STATE_ERROR;
+ ret = c4iw_modify_qp(ep->com.qp->rhp,
+ ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
+ &attrs, 1);
+ if (ret)
+ log(LOG_ERR,
+ "%s - qp <- error failed!\n",
+ __func__);
+ }
+ peer_abort_upcall(ep);
+ break;
+
+ case ABORTING:
+ break;
+
+ case DEAD:
+ CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!",
+ __func__, ep->com.so->so_error);
+ return;
+
+ default:
+ panic("%s: ep %p state %d", __func__, ep, state);
+ break;
+ }
+
+ if (state != ABORTING) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pce1 %p", __func__, ep);
+ close_socket(&ep->com, 0);
+ state_set(&ep->com, DEAD);
+ c4iw_put_ep(&ep->com);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep);
+ return;
+}
+
+static void
+process_close_complete(struct c4iw_ep *ep)
+{
+ struct c4iw_qp_attributes attrs;
+ int release = 0;
+
+ CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep,
+ ep->com.so, states[ep->com.state]);
+
+ /* The cm_id may be null if we failed to connect */
+ mutex_lock(&ep->com.mutex);
+
+ switch (ep->com.state) {
+
+ case CLOSING:
+ CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND",
+ __func__, ep);
+ __state_set(&ep->com, MORIBUND);
+ break;
+
+ case MORIBUND:
+ CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__,
+ ep);
+ STOP_EP_TIMER(ep);
+
+ if ((ep->com.cm_id) && (ep->com.qp)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE",
+ __func__, ep);
+ attrs.next_state = C4IW_QP_STATE_IDLE;
+ c4iw_modify_qp(ep->com.dev,
+ ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE,
+ &attrs, 1);
+ }
+
+ if (ep->parent_ep) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pcc3 %p", __func__, ep);
+ close_socket(&ep->com, 1);
+ }
+ else {
+
+ CTR2(KTR_IW_CXGBE, "%s:pcc4 %p", __func__, ep);
+ close_socket(&ep->com, 0);
+ }
+ close_complete_upcall(ep);
+ __state_set(&ep->com, DEAD);
+ release = 1;
+ break;
+
+ case ABORTING:
+ CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep);
+ break;
+
+ case DEAD:
+ default:
+ CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep);
+ panic("%s:pcc6 %p DEAD", __func__, ep);
+ break;
+ }
+ mutex_unlock(&ep->com.mutex);
+
+ if (release) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pcc7 %p", __func__, ep);
+ c4iw_put_ep(&ep->com);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep);
+ return;
+}
+
+static void
+init_sock(struct c4iw_ep_common *epc)
+{
+ int rc;
+ struct sockopt sopt;
+ struct socket *so = epc->so;
+ int on = 1;
+
+ SOCK_LOCK(so);
+ soupcall_set(so, SO_RCV, c4iw_so_upcall, epc);
+ so->so_state |= SS_NBIO;
+ SOCK_UNLOCK(so);
+ sopt.sopt_dir = SOPT_SET;
+ sopt.sopt_level = IPPROTO_TCP;
+ sopt.sopt_name = TCP_NODELAY;
+ sopt.sopt_val = (caddr_t)&on;
+ sopt.sopt_valsize = sizeof on;
+ sopt.sopt_td = NULL;
+ rc = sosetopt(so, &sopt);
+ if (rc) {
+ log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n",
+ __func__, so, rc);
+ }
+}
+
+static void
+process_data(struct c4iw_ep *ep)
+{
+ struct sockaddr_in *local, *remote;
+
+ CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sb_cc %d", __func__,
+ ep->com.so, ep, states[ep->com.state], ep->com.so->so_rcv.sb_cc);
+
+ switch (state_read(&ep->com)) {
+ case MPA_REQ_SENT:
+ process_mpa_reply(ep);
+ break;
+ case MPA_REQ_WAIT:
+ in_getsockaddr(ep->com.so, (struct sockaddr **)&local);
+ in_getpeeraddr(ep->com.so, (struct sockaddr **)&remote);
+ ep->com.local_addr = *local;
+ ep->com.remote_addr = *remote;
+ free(local, M_SONAME);
+ free(remote, M_SONAME);
+ process_mpa_request(ep);
+ break;
+ default:
+ if (ep->com.so->so_rcv.sb_cc)
+ log(LOG_ERR, "%s: Unexpected streaming data. "
+ "ep %p, state %d, so %p, so_state 0x%x, sb_cc %u\n",
+ __func__, ep, state_read(&ep->com), ep->com.so,
+ ep->com.so->so_state, ep->com.so->so_rcv.sb_cc);
+ break;
+ }
+}
+
+static void
+process_connected(struct c4iw_ep *ep)
+{
+
+ if ((ep->com.so->so_state & SS_ISCONNECTED) && !ep->com.so->so_error)
+ send_mpa_req(ep);
+ else {
+ connect_reply_upcall(ep, -ep->com.so->so_error);
+ close_socket(&ep->com, 0);
+ state_set(&ep->com, DEAD);
+ c4iw_put_ep(&ep->com);
+ }
+}
+
+static struct socket *
+dequeue_socket(struct socket *head, struct sockaddr_in **remote,
+ struct c4iw_ep *child_ep)
+{
+ struct socket *so;
+
+ ACCEPT_LOCK();
+ so = TAILQ_FIRST(&head->so_comp);
+ if (!so) {
+ ACCEPT_UNLOCK();
+ return (NULL);
+ }
+ TAILQ_REMOVE(&head->so_comp, so, so_list);
+ head->so_qlen--;
+ SOCK_LOCK(so);
+ so->so_qstate &= ~SQ_COMP;
+ so->so_head = NULL;
+ soref(so);
+ soupcall_set(so, SO_RCV, c4iw_so_upcall, child_ep);
+ so->so_state |= SS_NBIO;
+ SOCK_UNLOCK(so);
+ ACCEPT_UNLOCK();
+ soaccept(so, (struct sockaddr **)remote);
+
+ return (so);
+}
+
+static void
+process_newconn(struct c4iw_ep *parent_ep)
+{
+ struct socket *child_so;
+ struct c4iw_ep *child_ep;
+ struct sockaddr_in *remote;
+
+ child_ep = alloc_ep(sizeof(*child_ep), M_NOWAIT);
+ if (!child_ep) {
+ CTR3(KTR_IW_CXGBE, "%s: parent so %p, parent ep %p, ENOMEM",
+ __func__, parent_ep->com.so, parent_ep);
+ log(LOG_ERR, "%s: failed to allocate ep entry\n", __func__);
+ return;
+ }
+
+ child_so = dequeue_socket(parent_ep->com.so, &remote, child_ep);
+ if (!child_so) {
+ CTR4(KTR_IW_CXGBE,
+ "%s: parent so %p, parent ep %p, child ep %p, dequeue err",
+ __func__, parent_ep->com.so, parent_ep, child_ep);
+ log(LOG_ERR, "%s: failed to dequeue child socket\n", __func__);
+ __free_ep(&child_ep->com);
+ return;
+
+ }
+
+ CTR5(KTR_IW_CXGBE,
+ "%s: parent so %p, parent ep %p, child so %p, child ep %p",
+ __func__, parent_ep->com.so, parent_ep, child_so, child_ep);
+
+ child_ep->com.local_addr = parent_ep->com.local_addr;
+ child_ep->com.remote_addr = *remote;
+ child_ep->com.dev = parent_ep->com.dev;
+ child_ep->com.so = child_so;
+ child_ep->com.cm_id = NULL;
+ child_ep->com.thread = parent_ep->com.thread;
+ child_ep->parent_ep = parent_ep;
+
+ free(remote, M_SONAME);
+ c4iw_get_ep(&parent_ep->com);
+ child_ep->parent_ep = parent_ep;
+ init_timer(&child_ep->timer);
+ state_set(&child_ep->com, MPA_REQ_WAIT);
+ START_EP_TIMER(child_ep);
+
+ /* maybe the request has already been queued up on the socket... */
+ process_mpa_request(child_ep);
+}
+
+static int
+c4iw_so_upcall(struct socket *so, void *arg, int waitflag)
+{
+ struct c4iw_ep *ep = arg;
+
+ spin_lock(&req_lock);
+
+ CTR6(KTR_IW_CXGBE,
+ "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p",
+ __func__, so, so->so_state, ep, states[ep->com.state],
+ ep->com.entry.tqe_prev);
+
+ if (ep && ep->com.so && !ep->com.entry.tqe_prev) {
+ KASSERT(ep->com.so == so, ("%s: XXX review.", __func__));
+ c4iw_get_ep(&ep->com);
+ TAILQ_INSERT_TAIL(&req_list, &ep->com, entry);
+ queue_work(c4iw_taskq, &c4iw_task);
+ }
+
+ spin_unlock(&req_lock);
+ return (SU_OK);
+}
+
+static void
+process_socket_event(struct c4iw_ep *ep)
+{
+ int state = state_read(&ep->com);
+ struct socket *so = ep->com.so;
+
+ CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, "
+ "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state,
+ so->so_error, so->so_rcv.sb_state, ep, states[state]);
+
+ if (state == CONNECTING) {
+ process_connected(ep);
+ return;
+ }
+
+ if (state == LISTEN) {
+ process_newconn(ep);
+ return;
+ }
+
+ /* connection error */
+ if (so->so_error) {
+ process_conn_error(ep);
+ return;
+ }
+
+ /* peer close */
+ if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state < CLOSING) {
+ process_peer_close(ep);
+ return;
+ }
+
+ /* close complete */
+ if (so->so_state & SS_ISDISCONNECTED) {
+ process_close_complete(ep);
+ return;
+ }
+
+ /* rx data */
+ process_data(ep);
+}
+
+SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters");
+
+int db_delay_usecs = 1;
+TUNABLE_INT("hw.iw_cxgbe.db_delay_usecs", &db_delay_usecs);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_delay_usecs, CTLFLAG_RW, &db_delay_usecs, 0,
+ "Usecs to delay awaiting db fifo to drain");
+
+static int dack_mode = 1;
+TUNABLE_INT("hw.iw_cxgbe.dack_mode", &dack_mode);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RW, &dack_mode, 0,
+ "Delayed ack mode (default = 1)");
+
+int c4iw_max_read_depth = 8;
+TUNABLE_INT("hw.iw_cxgbe.c4iw_max_read_depth", &c4iw_max_read_depth);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RW, &c4iw_max_read_depth, 0,
+ "Per-connection max ORD/IRD (default = 8)");
+
+static int enable_tcp_timestamps;
+TUNABLE_INT("hw.iw_cxgbe.enable_tcp_timestamps", &enable_tcp_timestamps);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RW, &enable_tcp_timestamps, 0,
+ "Enable tcp timestamps (default = 0)");
+
+static int enable_tcp_sack;
+TUNABLE_INT("hw.iw_cxgbe.enable_tcp_sack", &enable_tcp_sack);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RW, &enable_tcp_sack, 0,
+ "Enable tcp SACK (default = 0)");
+
+static int enable_tcp_window_scaling = 1;
+TUNABLE_INT("hw.iw_cxgbe.enable_tcp_window_scaling", &enable_tcp_window_scaling);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RW, &enable_tcp_window_scaling, 0,
+ "Enable tcp window scaling (default = 1)");
+
+int c4iw_debug = 1;
+TUNABLE_INT("hw.iw_cxgbe.c4iw_debug", &c4iw_debug);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RW, &c4iw_debug, 0,
+ "Enable debug logging (default = 0)");
+
+static int peer2peer;
+TUNABLE_INT("hw.iw_cxgbe.peer2peer", &peer2peer);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RW, &peer2peer, 0,
+ "Support peer2peer ULPs (default = 0)");
+
+static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
+TUNABLE_INT("hw.iw_cxgbe.p2p_type", &p2p_type);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RW, &p2p_type, 0,
+ "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)");
+
+static int ep_timeout_secs = 60;
+TUNABLE_INT("hw.iw_cxgbe.ep_timeout_secs", &ep_timeout_secs);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RW, &ep_timeout_secs, 0,
+ "CM Endpoint operation timeout in seconds (default = 60)");
+
+static int mpa_rev = 1;
+TUNABLE_INT("hw.iw_cxgbe.mpa_rev", &mpa_rev);
+#ifdef IW_CM_MPAV2
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RW, &mpa_rev, 0,
+ "MPA Revision, 0 supports amso1100, 1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)");
+#else
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RW, &mpa_rev, 0,
+ "MPA Revision, 0 supports amso1100, 1 is RFC0544 spec compliant (default = 1)");
+#endif
+
+static int markers_enabled;
+TUNABLE_INT("hw.iw_cxgbe.markers_enabled", &markers_enabled);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RW, &markers_enabled, 0,
+ "Enable MPA MARKERS (default(0) = disabled)");
+
+static int crc_enabled = 1;
+TUNABLE_INT("hw.iw_cxgbe.crc_enabled", &crc_enabled);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RW, &crc_enabled, 0,
+ "Enable MPA CRC (default(1) = enabled)");
+
+static int rcv_win = 256 * 1024;
+TUNABLE_INT("hw.iw_cxgbe.rcv_win", &rcv_win);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RW, &rcv_win, 0,
+ "TCP receive window in bytes (default = 256KB)");
+
+static int snd_win = 128 * 1024;
+TUNABLE_INT("hw.iw_cxgbe.snd_win", &snd_win);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RW, &snd_win, 0,
+ "TCP send window in bytes (default = 128KB)");
+
+int db_fc_threshold = 2000;
+TUNABLE_INT("hw.iw_cxgbe.db_fc_threshold", &db_fc_threshold);
+SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_fc_threshold, CTLFLAG_RW, &db_fc_threshold, 0,
+ "QP count/threshold that triggers automatic");
+
+static void
+start_ep_timer(struct c4iw_ep *ep)
+{
+
+ if (timer_pending(&ep->timer)) {
+ CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep);
+ printk(KERN_ERR "%s timer already started! ep %p\n", __func__,
+ ep);
+ return;
+ }
+ clear_bit(TIMEOUT, &ep->com.flags);
+ c4iw_get_ep(&ep->com);
+ ep->timer.expires = jiffies + ep_timeout_secs * HZ;
+ ep->timer.data = (unsigned long)ep;
+ ep->timer.function = ep_timeout;
+ add_timer(&ep->timer);
+}
+
+static void
+stop_ep_timer(struct c4iw_ep *ep)
+{
+
+ del_timer_sync(&ep->timer);
+ if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
+ c4iw_put_ep(&ep->com);
+ }
+}
+
+static enum
+c4iw_ep_state state_read(struct c4iw_ep_common *epc)
+{
+ enum c4iw_ep_state state;
+
+ mutex_lock(&epc->mutex);
+ state = epc->state;
+ mutex_unlock(&epc->mutex);
+
+ return (state);
+}
+
+static void
+__state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
+{
+
+ epc->state = new;
+}
+
+static void
+state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
+{
+
+ mutex_lock(&epc->mutex);
+ __state_set(epc, new);
+ mutex_unlock(&epc->mutex);
+}
+
+static void *
+alloc_ep(int size, gfp_t gfp)
+{
+ struct c4iw_ep_common *epc;
+
+ epc = kzalloc(size, gfp);
+ if (epc == NULL)
+ return (NULL);
+
+ kref_init(&epc->kref);
+ mutex_init(&epc->mutex);
+ c4iw_init_wr_wait(&epc->wr_wait);
+
+ return (epc);
+}
+
+void
+__free_ep(struct c4iw_ep_common *epc)
+{
+ CTR2(KTR_IW_CXGBE, "%s:feB %p", __func__, epc);
+ KASSERT(!epc->so, ("%s warning ep->so %p \n", __func__, epc->so));
+ KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list!\n", __func__, epc));
+ free(epc, M_DEVBUF);
+ CTR2(KTR_IW_CXGBE, "%s:feE %p", __func__, epc);
+}
+
+void _c4iw_free_ep(struct kref *kref)
+{
+ struct c4iw_ep *ep;
+ struct c4iw_ep_common *epc;
+
+ ep = container_of(kref, struct c4iw_ep, com.kref);
+ epc = &ep->com;
+ KASSERT(!epc->so, ("%s ep->so %p", __func__, epc->so));
+ KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list",
+ __func__, epc));
+ kfree(ep);
+}
+
+static void release_ep_resources(struct c4iw_ep *ep)
+{
+ CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep);
+ set_bit(RELEASE_RESOURCES, &ep->com.flags);
+ c4iw_put_ep(&ep->com);
+ CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep);
+}
+
+static void
+send_mpa_req(struct c4iw_ep *ep)
+{
+ int mpalen;
+ struct mpa_message *mpa;
+ struct mpa_v2_conn_params mpa_v2_params;
+ struct mbuf *m;
+ char mpa_rev_to_use = mpa_rev;
+ int err;
+
+ if (ep->retry_with_mpa_v1)
+ mpa_rev_to_use = 1;
+ mpalen = sizeof(*mpa) + ep->plen;
+ if (mpa_rev_to_use == 2)
+ mpalen += sizeof(struct mpa_v2_conn_params);
+
+ if (mpalen > MHLEN)
+ CXGBE_UNIMPLEMENTED(__func__);
+
+ m = m_gethdr(M_NOWAIT, MT_DATA);
+ if (m == NULL) {
+ connect_reply_upcall(ep, -ENOMEM);
+ return;
+ }
+
+ mpa = mtod(m, struct mpa_message *);
+ m->m_len = mpalen;
+ m->m_pkthdr.len = mpalen;
+ memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
+ mpa->flags = (crc_enabled ? MPA_CRC : 0) |
+ (markers_enabled ? MPA_MARKERS : 0) |
+ (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
+ mpa->private_data_size = htons(ep->plen);
+ mpa->revision = mpa_rev_to_use;
+
+ if (mpa_rev_to_use == 1) {
+ ep->tried_with_mpa_v1 = 1;
+ ep->retry_with_mpa_v1 = 0;
+ }
+
+ if (mpa_rev_to_use == 2) {
+ mpa->private_data_size +=
+ htons(sizeof(struct mpa_v2_conn_params));
+ mpa_v2_params.ird = htons((u16)ep->ird);
+ mpa_v2_params.ord = htons((u16)ep->ord);
+
+ if (peer2peer) {
+ mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
+
+ if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
+ mpa_v2_params.ord |=
+ htons(MPA_V2_RDMA_WRITE_RTR);
+ } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
+ mpa_v2_params.ord |=
+ htons(MPA_V2_RDMA_READ_RTR);
+ }
+ }
+ memcpy(mpa->private_data, &mpa_v2_params,
+ sizeof(struct mpa_v2_conn_params));
+
+ if (ep->plen) {
+
+ memcpy(mpa->private_data +
+ sizeof(struct mpa_v2_conn_params),
+ ep->mpa_pkt + sizeof(*mpa), ep->plen);
+ }
+ } else {
+
+ if (ep->plen)
+ memcpy(mpa->private_data,
+ ep->mpa_pkt + sizeof(*mpa), ep->plen);
+ CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep);
+ }
+
+ err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread);
+ if (err) {
+ connect_reply_upcall(ep, -ENOMEM);
+ return;
+ }
+
+ START_EP_TIMER(ep);
+ state_set(&ep->com, MPA_REQ_SENT);
+ ep->mpa_attr.initiator = 1;
+}
+
+static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
+{
+ int mpalen ;
+ struct mpa_message *mpa;
+ struct mpa_v2_conn_params mpa_v2_params;
+ struct mbuf *m;
+ int err;
+
+ CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid,
+ ep->plen);
+
+ mpalen = sizeof(*mpa) + plen;
+
+ if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
+
+ mpalen += sizeof(struct mpa_v2_conn_params);
+ CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep,
+ ep->mpa_attr.version, mpalen);
+ }
+
+ if (mpalen > MHLEN)
+ CXGBE_UNIMPLEMENTED(__func__);
+
+ m = m_gethdr(M_NOWAIT, MT_DATA);
+ if (m == NULL) {
+
+ printf("%s - cannot alloc mbuf!\n", __func__);
+ CTR2(KTR_IW_CXGBE, "%s:smrej2 %p", __func__, ep);
+ return (-ENOMEM);
+ }
+
+
+ mpa = mtod(m, struct mpa_message *);
+ m->m_len = mpalen;
+ m->m_pkthdr.len = mpalen;
+ memset(mpa, 0, sizeof(*mpa));
+ memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
+ mpa->flags = MPA_REJECT;
+ mpa->revision = mpa_rev;
+ mpa->private_data_size = htons(plen);
+
+ if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
+
+ mpa->flags |= MPA_ENHANCED_RDMA_CONN;
+ mpa->private_data_size +=
+ htons(sizeof(struct mpa_v2_conn_params));
+ mpa_v2_params.ird = htons(((u16)ep->ird) |
+ (peer2peer ? MPA_V2_PEER2PEER_MODEL :
+ 0));
+ mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
+ (p2p_type ==
+ FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
+ MPA_V2_RDMA_WRITE_RTR : p2p_type ==
+ FW_RI_INIT_P2PTYPE_READ_REQ ?
+ MPA_V2_RDMA_READ_RTR : 0) : 0));
+ memcpy(mpa->private_data, &mpa_v2_params,
+ sizeof(struct mpa_v2_conn_params));
+
+ if (ep->plen)
+ memcpy(mpa->private_data +
+ sizeof(struct mpa_v2_conn_params), pdata, plen);
+ CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep,
+ mpa_v2_params.ird, mpa_v2_params.ord, ep->plen);
+ } else
+ if (plen)
+ memcpy(mpa->private_data, pdata, plen);
+
+ err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread);
+ if (!err)
+ ep->snd_seq += mpalen;
+ CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err);
+ return err;
+}
+
+static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
+{
+ int mpalen;
+ struct mpa_message *mpa;
+ struct mbuf *m;
+ struct mpa_v2_conn_params mpa_v2_params;
+ int err;
+
+ CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep);
+
+ mpalen = sizeof(*mpa) + plen;
+
+ if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
+
+ CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep,
+ ep->mpa_attr.version);
+ mpalen += sizeof(struct mpa_v2_conn_params);
+ }
+
+ if (mpalen > MHLEN)
+ CXGBE_UNIMPLEMENTED(__func__);
+
+ m = m_gethdr(M_NOWAIT, MT_DATA);
+ if (m == NULL) {
+
+ CTR2(KTR_IW_CXGBE, "%s:smrep2 %p", __func__, ep);
+ printf("%s - cannot alloc mbuf!\n", __func__);
+ return (-ENOMEM);
+ }
+
+
+ mpa = mtod(m, struct mpa_message *);
+ m->m_len = mpalen;
+ m->m_pkthdr.len = mpalen;
+ memset(mpa, 0, sizeof(*mpa));
+ memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
+ mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
+ (markers_enabled ? MPA_MARKERS : 0);
+ mpa->revision = ep->mpa_attr.version;
+ mpa->private_data_size = htons(plen);
+
+ if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
+
+ mpa->flags |= MPA_ENHANCED_RDMA_CONN;
+ mpa->private_data_size +=
+ htons(sizeof(struct mpa_v2_conn_params));
+ mpa_v2_params.ird = htons((u16)ep->ird);
+ mpa_v2_params.ord = htons((u16)ep->ord);
+ CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep,
+ ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord);
+
+ if (peer2peer && (ep->mpa_attr.p2p_type !=
+ FW_RI_INIT_P2PTYPE_DISABLED)) {
+
+ mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
+
+ if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
+
+ mpa_v2_params.ord |=
+ htons(MPA_V2_RDMA_WRITE_RTR);
+ CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d",
+ __func__, ep, p2p_type, mpa_v2_params.ird,
+ mpa_v2_params.ord);
+ }
+ else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
+
+ mpa_v2_params.ord |=
+ htons(MPA_V2_RDMA_READ_RTR);
+ CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d",
+ __func__, ep, p2p_type, mpa_v2_params.ird,
+ mpa_v2_params.ord);
+ }
+ }
+
+ memcpy(mpa->private_data, &mpa_v2_params,
+ sizeof(struct mpa_v2_conn_params));
+
+ if (ep->plen)
+ memcpy(mpa->private_data +
+ sizeof(struct mpa_v2_conn_params), pdata, plen);
+ } else
+ if (plen)
+ memcpy(mpa->private_data, pdata, plen);
+
+ state_set(&ep->com, MPA_REP_SENT);
+ ep->snd_seq += mpalen;
+ err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT,
+ ep->com.thread);
+ CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err);
+ return err;
+}
+
+
+
+static void close_complete_upcall(struct c4iw_ep *ep)
+{
+ struct iw_cm_event event;
+
+ CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep);
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_CLOSE;
+
+ if (ep->com.cm_id) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep);
+ ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+ ep->com.cm_id->rem_ref(ep->com.cm_id);
+ ep->com.cm_id = NULL;
+ ep->com.qp = NULL;
+ set_bit(CLOSE_UPCALL, &ep->com.history);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep);
+}
+
+static int abort_connection(struct c4iw_ep *ep)
+{
+ int err;
+
+ CTR2(KTR_IW_CXGBE, "%s:abB %p", __func__, ep);
+ close_complete_upcall(ep);
+ state_set(&ep->com, ABORTING);
+ abort_socket(ep);
+ err = close_socket(&ep->com, 0);
+ set_bit(ABORT_CONN, &ep->com.history);
+ CTR2(KTR_IW_CXGBE, "%s:abE %p", __func__, ep);
+ return err;
+}
+
+static void peer_close_upcall(struct c4iw_ep *ep)
+{
+ struct iw_cm_event event;
+
+ CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep);
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_DISCONNECT;
+
+ if (ep->com.cm_id) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep);
+ ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+ set_bit(DISCONN_UPCALL, &ep->com.history);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep);
+}
+
+static void peer_abort_upcall(struct c4iw_ep *ep)
+{
+ struct iw_cm_event event;
+
+ CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep);
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_CLOSE;
+ event.status = -ECONNRESET;
+
+ if (ep->com.cm_id) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep);
+ ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+ ep->com.cm_id->rem_ref(ep->com.cm_id);
+ ep->com.cm_id = NULL;
+ ep->com.qp = NULL;
+ set_bit(ABORT_UPCALL, &ep->com.history);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep);
+}
+
+static void connect_reply_upcall(struct c4iw_ep *ep, int status)
+{
+ struct iw_cm_event event;
+
+ CTR3(KTR_IW_CXGBE, "%s:cruB %p", __func__, ep, status);
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_CONNECT_REPLY;
+ event.status = (status ==-ECONNABORTED)?-ECONNRESET: status;
+ event.local_addr = ep->com.local_addr;
+ event.remote_addr = ep->com.remote_addr;
+
+ if ((status == 0) || (status == -ECONNREFUSED)) {
+
+ if (!ep->tried_with_mpa_v1) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep);
+ /* this means MPA_v2 is used */
+ event.private_data_len = ep->plen -
+ sizeof(struct mpa_v2_conn_params);
+ event.private_data = ep->mpa_pkt +
+ sizeof(struct mpa_message) +
+ sizeof(struct mpa_v2_conn_params);
+ } else {
+
+ CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep);
+ /* this means MPA_v1 is used */
+ event.private_data_len = ep->plen;
+ event.private_data = ep->mpa_pkt +
+ sizeof(struct mpa_message);
+ }
+ }
+
+ if (ep->com.cm_id) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep);
+ set_bit(CONN_RPL_UPCALL, &ep->com.history);
+ ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+ }
+
+ if(status == -ECONNABORTED) {
+
+ CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status);
+ return;
+ }
+
+ if (status < 0) {
+
+ CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status);
+ ep->com.cm_id->rem_ref(ep->com.cm_id);
+ ep->com.cm_id = NULL;
+ ep->com.qp = NULL;
+ }
+
+ CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep);
+}
+
+static void connect_request_upcall(struct c4iw_ep *ep)
+{
+ struct iw_cm_event event;
+
+ CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep,
+ ep->tried_with_mpa_v1);
+
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_CONNECT_REQUEST;
+ event.local_addr = ep->com.local_addr;
+ event.remote_addr = ep->com.remote_addr;
+ event.provider_data = ep;
+ event.so = ep->com.so;
+
+ if (!ep->tried_with_mpa_v1) {
+ /* this means MPA_v2 is used */
+#ifdef IW_CM_MPAV2
+ event.ord = ep->ord;
+ event.ird = ep->ird;
+#endif
+ event.private_data_len = ep->plen -
+ sizeof(struct mpa_v2_conn_params);
+ event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
+ sizeof(struct mpa_v2_conn_params);
+ } else {
+
+ /* this means MPA_v1 is used. Send max supported */
+#ifdef IW_CM_MPAV2
+ event.ord = c4iw_max_read_depth;
+ event.ird = c4iw_max_read_depth;
+#endif
+ event.private_data_len = ep->plen;
+ event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
+ }
+
+ c4iw_get_ep(&ep->com);
+ ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
+ &event);
+ set_bit(CONNREQ_UPCALL, &ep->com.history);
+ c4iw_put_ep(&ep->parent_ep->com);
+}
+
+static void established_upcall(struct c4iw_ep *ep)
+{
+ struct iw_cm_event event;
+
+ CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep);
+ memset(&event, 0, sizeof(event));
+ event.event = IW_CM_EVENT_ESTABLISHED;
+#ifdef IW_CM_MPAV2
+ event.ird = ep->ird;
+ event.ord = ep->ord;
+#endif
+ if (ep->com.cm_id) {
+
+ CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep);
+ ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+ set_bit(ESTAB_UPCALL, &ep->com.history);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep);
+}
+
+
+
+static void process_mpa_reply(struct c4iw_ep *ep)
+{
+ struct mpa_message *mpa;
+ struct mpa_v2_conn_params *mpa_v2_params;
+ u16 plen;
+ u16 resp_ird, resp_ord;
+ u8 rtr_mismatch = 0, insuff_ird = 0;
+ struct c4iw_qp_attributes attrs;
+ enum c4iw_qp_attr_mask mask;
+ int err;
+ struct mbuf *top, *m;
+ int flags = MSG_DONTWAIT;
+ struct uio uio;
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep);
+
+ /*
+ * Stop mpa timer. If it expired, then the state has
+ * changed and we bail since ep_timeout already aborted
+ * the connection.
+ */
+ STOP_EP_TIMER(ep);
+ if (state_read(&ep->com) != MPA_REQ_SENT)
+ return;
+
+ uio.uio_resid = 1000000;
+ uio.uio_td = ep->com.thread;
+ err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags);
+
+ if (err) {
+
+ if (err == EWOULDBLOCK) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep);
+ START_EP_TIMER(ep);
+ return;
+ }
+ err = -err;
+ CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep);
+ goto err;
+ }
+
+ if (ep->com.so->so_rcv.sb_mb) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep);
+ printf("%s data after soreceive called! so %p sb_mb %p top %p\n",
+ __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top);
+ }
+
+ m = top;
+
+ do {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep);
+ /*
+ * If we get more than the supported amount of private data
+ * then we must fail this connection.
+ */
+ if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) {
+
+ CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep,
+ ep->mpa_pkt_len + m->m_len);
+ err = (-EINVAL);
+ goto err;
+ }
+
+ /*
+ * copy the new data into our accumulation buffer.
+ */
+ m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len]));
+ ep->mpa_pkt_len += m->m_len;
+ if (!m->m_next)
+ m = m->m_nextpkt;
+ else
+ m = m->m_next;
+ } while (m);
+
+ m_freem(top);
+ /*
+ * if we don't even have the mpa message, then bail.
+ */
+ if (ep->mpa_pkt_len < sizeof(*mpa))
+ return;
+ mpa = (struct mpa_message *) ep->mpa_pkt;
+
+ /* Validate MPA header. */
+ if (mpa->revision > mpa_rev) {
+
+ CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep,
+ mpa->revision, mpa_rev);
+ printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, "
+ " Received = %d\n", __func__, mpa_rev, mpa->revision);
+ err = -EPROTO;
+ goto err;
+ }
+
+ if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep);
+ err = -EPROTO;
+ goto err;
+ }
+
+ plen = ntohs(mpa->private_data_size);
+
+ /*
+ * Fail if there's too much private data.
+ */
+ if (plen > MPA_MAX_PRIVATE_DATA) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep);
+ err = -EPROTO;
+ goto err;
+ }
+
+ /*
+ * If plen does not account for pkt size
+ */
+ if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep);
+ err = -EPROTO;
+ goto err;
+ }
+
+ ep->plen = (u8) plen;
+
+ /*
+ * If we don't have all the pdata yet, then bail.
+ * We'll continue process when more data arrives.
+ */
+ if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep);
+ return;
+ }
+
+ if (mpa->flags & MPA_REJECT) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep);
+ err = -ECONNREFUSED;
+ goto err;
+ }
+
+ /*
+ * If we get here we have accumulated the entire mpa
+ * start reply message including private data. And
+ * the MPA header is valid.
+ */
+ state_set(&ep->com, FPDU_MODE);
+ ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
+ ep->mpa_attr.recv_marker_enabled = markers_enabled;
+ ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
+ ep->mpa_attr.version = mpa->revision;
+ ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
+
+ if (mpa->revision == 2) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep);
+ ep->mpa_attr.enhanced_rdma_conn =
+ mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
+
+ if (ep->mpa_attr.enhanced_rdma_conn) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep);
+ mpa_v2_params = (struct mpa_v2_conn_params *)
+ (ep->mpa_pkt + sizeof(*mpa));
+ resp_ird = ntohs(mpa_v2_params->ird) &
+ MPA_V2_IRD_ORD_MASK;
+ resp_ord = ntohs(mpa_v2_params->ord) &
+ MPA_V2_IRD_ORD_MASK;
+
+ /*
+ * This is a double-check. Ideally, below checks are
+ * not required since ird/ord stuff has been taken
+ * care of in c4iw_accept_cr
+ */
+ if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmre %p", __func__, ep);
+ err = -ENOMEM;
+ ep->ird = resp_ord;
+ ep->ord = resp_ird;
+ insuff_ird = 1;
+ }
+
+ if (ntohs(mpa_v2_params->ird) &
+ MPA_V2_PEER2PEER_MODEL) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep);
+ if (ntohs(mpa_v2_params->ord) &
+ MPA_V2_RDMA_WRITE_RTR) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep);
+ ep->mpa_attr.p2p_type =
+ FW_RI_INIT_P2PTYPE_RDMA_WRITE;
+ }
+ else if (ntohs(mpa_v2_params->ord) &
+ MPA_V2_RDMA_READ_RTR) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep);
+ ep->mpa_attr.p2p_type =
+ FW_RI_INIT_P2PTYPE_READ_REQ;
+ }
+ }
+ }
+ } else {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep);
+
+ if (mpa->revision == 1) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep);
+
+ if (peer2peer) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep);
+ ep->mpa_attr.p2p_type = p2p_type;
+ }
+ }
+ }
+
+ if (set_tcpinfo(ep)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep);
+ printf("%s set_tcpinfo error\n", __func__);
+ goto err;
+ }
+
+ CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, "
+ "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__,
+ ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
+ ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
+ ep->mpa_attr.p2p_type);
+
+ /*
+ * If responder's RTR does not match with that of initiator, assign
+ * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
+ * generated when moving QP to RTS state.
+ * A TERM message will be sent after QP has moved to RTS state
+ */
+ if ((ep->mpa_attr.version == 2) && peer2peer &&
+ (ep->mpa_attr.p2p_type != p2p_type)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep);
+ ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
+ rtr_mismatch = 1;
+ }
+
+
+ //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
+ attrs.mpa_attr = ep->mpa_attr;
+ attrs.max_ird = ep->ird;
+ attrs.max_ord = ep->ord;
+ attrs.llp_stream_handle = ep;
+ attrs.next_state = C4IW_QP_STATE_RTS;
+
+ mask = C4IW_QP_ATTR_NEXT_STATE |
+ C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
+ C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
+
+ /* bind QP and TID with INIT_WR */
+ err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
+
+ if (err) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep);
+ goto err;
+ }
+
+ /*
+ * If responder's RTR requirement did not match with what initiator
+ * supports, generate TERM message
+ */
+ if (rtr_mismatch) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep);
+ printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
+ attrs.layer_etype = LAYER_MPA | DDP_LLP;
+ attrs.ecode = MPA_NOMATCH_RTR;
+ attrs.next_state = C4IW_QP_STATE_TERMINATE;
+ err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /*
+ * Generate TERM if initiator IRD is not sufficient for responder
+ * provided ORD. Currently, we do the same behaviour even when
+ * responder provided IRD is also not sufficient as regards to
+ * initiator ORD.
+ */
+ if (insuff_ird) {
+
+ CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep);
+ printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
+ __func__);
+ attrs.layer_etype = LAYER_MPA | DDP_LLP;
+ attrs.ecode = MPA_INSUFF_IRD;
+ attrs.next_state = C4IW_QP_STATE_TERMINATE;
+ err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
+ err = -ENOMEM;
+ goto out;
+ }
+ goto out;
+err:
+ state_set(&ep->com, ABORTING);
+ abort_connection(ep);
+out:
+ connect_reply_upcall(ep, err);
+ CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep);
+ return;
+}
+
+static void
+process_mpa_request(struct c4iw_ep *ep)
+{
+ struct mpa_message *mpa;
+ u16 plen;
+ int flags = MSG_DONTWAIT;
+ int rc;
+ struct iovec iov;
+ struct uio uio;
+ enum c4iw_ep_state state = state_read(&ep->com);
+
+ CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]);
+
+ if (state != MPA_REQ_WAIT)
+ return;
+
+ iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len];
+ iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
+ uio.uio_iov = &iov;
+ uio.uio_iovcnt = 1;
+ uio.uio_offset = 0;
+ uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
+ uio.uio_segflg = UIO_SYSSPACE;
+ uio.uio_rw = UIO_READ;
+ uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */
+
+ rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags);
+ if (rc == EAGAIN)
+ return;
+ else if (rc) {
+abort:
+ STOP_EP_TIMER(ep);
+ abort_connection(ep);
+ return;
+ }
+ KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data",
+ __func__, ep->com.so));
+ ep->mpa_pkt_len += uio.uio_offset;
+
+ /*
+ * If we get more than the supported amount of private data then we must
+ * fail this connection. XXX: check so_rcv->sb_cc, or peek with another
+ * soreceive, or increase the size of mpa_pkt by 1 and abort if the last
+ * byte is filled by the soreceive above.
+ */
+
+ /* Don't even have the MPA message. Wait for more data to arrive. */
+ if (ep->mpa_pkt_len < sizeof(*mpa))
+ return;
+ mpa = (struct mpa_message *) ep->mpa_pkt;
+
+ /*
+ * Validate MPA Header.
+ */
+ if (mpa->revision > mpa_rev) {
+ log(LOG_ERR, "%s: MPA version mismatch. Local = %d,"
+ " Received = %d\n", __func__, mpa_rev, mpa->revision);
+ goto abort;
+ }
+
+ if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
+ goto abort;
+
+ /*
+ * Fail if there's too much private data.
+ */
+ plen = ntohs(mpa->private_data_size);
+ if (plen > MPA_MAX_PRIVATE_DATA)
+ goto abort;
+
+ /*
+ * If plen does not account for pkt size
+ */
+ if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
+ goto abort;
+
+ ep->plen = (u8) plen;
+
+ /*
+ * If we don't have all the pdata yet, then bail.
+ */
+ if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
+ return;
+
+ /*
+ * If we get here we have accumulated the entire mpa
+ * start reply message including private data.
+ */
+ ep->mpa_attr.initiator = 0;
+ ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
+ ep->mpa_attr.recv_marker_enabled = markers_enabled;
+ ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
+ ep->mpa_attr.version = mpa->revision;
+ if (mpa->revision == 1)
+ ep->tried_with_mpa_v1 = 1;
+ ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
+
+ if (mpa->revision == 2) {
+ ep->mpa_attr.enhanced_rdma_conn =
+ mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
+ if (ep->mpa_attr.enhanced_rdma_conn) {
+ struct mpa_v2_conn_params *mpa_v2_params;
+ u16 ird, ord;
+
+ mpa_v2_params = (void *)&ep->mpa_pkt[sizeof(*mpa)];
+ ird = ntohs(mpa_v2_params->ird);
+ ord = ntohs(mpa_v2_params->ord);
+
+ ep->ird = ird & MPA_V2_IRD_ORD_MASK;
+ ep->ord = ord & MPA_V2_IRD_ORD_MASK;
+ if (ird & MPA_V2_PEER2PEER_MODEL && peer2peer) {
+ if (ord & MPA_V2_RDMA_WRITE_RTR) {
+ ep->mpa_attr.p2p_type =
+ FW_RI_INIT_P2PTYPE_RDMA_WRITE;
+ } else if (ord & MPA_V2_RDMA_READ_RTR) {
+ ep->mpa_attr.p2p_type =
+ FW_RI_INIT_P2PTYPE_READ_REQ;
+ }
+ }
+ }
+ } else if (mpa->revision == 1 && peer2peer)
+ ep->mpa_attr.p2p_type = p2p_type;
+
+ if (set_tcpinfo(ep))
+ goto abort;
+
+ CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, "
+ "xmit_marker_enabled = %d, version = %d", __func__,
+ ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
+ ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version);
+
+ state_set(&ep->com, MPA_REQ_RCVD);
+ STOP_EP_TIMER(ep);
+
+ /* drive upcall */
+ mutex_lock(&ep->parent_ep->com.mutex);
+ if (ep->parent_ep->com.state != DEAD)
+ connect_request_upcall(ep);
+ else
+ abort_connection(ep);
+ mutex_unlock(&ep->parent_ep->com.mutex);
+}
+
+/*
+ * Upcall from the adapter indicating data has been transmitted.
+ * For us its just the single MPA request or reply. We can now free
+ * the skb holding the mpa message.
+ */
+int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
+{
+ int err;
+ struct c4iw_ep *ep = to_ep(cm_id);
+ CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep);
+
+ if (state_read(&ep->com) == DEAD) {
+
+ CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep);
+ c4iw_put_ep(&ep->com);
+ return -ECONNRESET;
+ }
+ set_bit(ULP_REJECT, &ep->com.history);
+ BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
+
+ if (mpa_rev == 0) {
+
+ CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep);
+ abort_connection(ep);
+ }
+ else {
+
+ CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep);
+ err = send_mpa_reject(ep, pdata, pdata_len);
+ err = soshutdown(ep->com.so, 3);
+ }
+ c4iw_put_ep(&ep->com);
+ CTR2(KTR_IW_CXGBE, "%s:crc4 %p", __func__, ep);
+ return 0;
+}
+
+int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+ int err;
+ struct c4iw_qp_attributes attrs;
+ enum c4iw_qp_attr_mask mask;
+ struct c4iw_ep *ep = to_ep(cm_id);
+ struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
+ struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
+
+ CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep);
+
+ if (state_read(&ep->com) == DEAD) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep);
+ err = -ECONNRESET;
+ goto err;
+ }
+
+ BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
+ BUG_ON(!qp);
+
+ set_bit(ULP_ACCEPT, &ep->com.history);
+
+ if ((conn_param->ord > c4iw_max_read_depth) ||
+ (conn_param->ird > c4iw_max_read_depth)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep);
+ abort_connection(ep);
+ err = -EINVAL;
+ goto err;
+ }
+
+ if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep);
+
+ if (conn_param->ord > ep->ird) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac4 %p", __func__, ep);
+ ep->ird = conn_param->ird;
+ ep->ord = conn_param->ord;
+ send_mpa_reject(ep, conn_param->private_data,
+ conn_param->private_data_len);
+ abort_connection(ep);
+ err = -ENOMEM;
+ goto err;
+ }
+
+ if (conn_param->ird > ep->ord) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac5 %p", __func__, ep);
+
+ if (!ep->ord) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac6 %p", __func__, ep);
+ conn_param->ird = 1;
+ }
+ else {
+ CTR2(KTR_IW_CXGBE, "%s:cac7 %p", __func__, ep);
+ abort_connection(ep);
+ err = -ENOMEM;
+ goto err;
+ }
+ }
+
+ }
+ ep->ird = conn_param->ird;
+ ep->ord = conn_param->ord;
+
+ if (ep->mpa_attr.version != 2) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac8 %p", __func__, ep);
+
+ if (peer2peer && ep->ird == 0) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cac9 %p", __func__, ep);
+ ep->ird = 1;
+ }
+ }
+
+
+ cm_id->add_ref(cm_id);
+ ep->com.cm_id = cm_id;
+ ep->com.qp = qp;
+ //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
+
+ /* bind QP to EP and move to RTS */
+ attrs.mpa_attr = ep->mpa_attr;
+ attrs.max_ird = ep->ird;
+ attrs.max_ord = ep->ord;
+ attrs.llp_stream_handle = ep;
+ attrs.next_state = C4IW_QP_STATE_RTS;
+
+ /* bind QP and TID with INIT_WR */
+ mask = C4IW_QP_ATTR_NEXT_STATE |
+ C4IW_QP_ATTR_LLP_STREAM_HANDLE |
+ C4IW_QP_ATTR_MPA_ATTR |
+ C4IW_QP_ATTR_MAX_IRD |
+ C4IW_QP_ATTR_MAX_ORD;
+
+ err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
+
+ if (err) {
+
+ CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep);
+ goto err1;
+ }
+ err = send_mpa_reply(ep, conn_param->private_data,
+ conn_param->private_data_len);
+
+ if (err) {
+
+ CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep);
+ goto err1;
+ }
+
+ state_set(&ep->com, FPDU_MODE);
+ established_upcall(ep);
+ c4iw_put_ep(&ep->com);
+ CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep);
+ return 0;
+err1:
+ ep->com.cm_id = NULL;
+ ep->com.qp = NULL;
+ cm_id->rem_ref(cm_id);
+err:
+ c4iw_put_ep(&ep->com);
+ CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep);
+ return err;
+}
+
+
+
+int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+ int err = 0;
+ struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
+ struct c4iw_ep *ep = NULL;
+ struct rtentry *rt;
+ struct toedev *tdev;
+
+ CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id);
+
+ if ((conn_param->ord > c4iw_max_read_depth) ||
+ (conn_param->ird > c4iw_max_read_depth)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id);
+ err = -EINVAL;
+ goto out;
+ }
+ ep = alloc_ep(sizeof(*ep), M_NOWAIT);
+
+ if (!ep) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc2 %p", __func__, cm_id);
+ printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
+ err = -ENOMEM;
+ goto out;
+ }
+ init_timer(&ep->timer);
+ ep->plen = conn_param->private_data_len;
+
+ if (ep->plen) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep);
+ memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
+ conn_param->private_data, ep->plen);
+ }
+ ep->ird = conn_param->ird;
+ ep->ord = conn_param->ord;
+
+ if (peer2peer && ep->ord == 0) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep);
+ ep->ord = 1;
+ }
+
+ cm_id->add_ref(cm_id);
+ ep->com.dev = dev;
+ ep->com.cm_id = cm_id;
+ ep->com.qp = get_qhp(dev, conn_param->qpn);
+
+ if (!ep->com.qp) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep);
+ err = -EINVAL;
+ goto fail2;
+ }
+ ep->com.thread = curthread;
+ ep->com.so = cm_id->so;
+
+ init_sock(&ep->com);
+
+ /* find a route */
+ rt = find_route(
+ cm_id->local_addr.sin_addr.s_addr,
+ cm_id->remote_addr.sin_addr.s_addr,
+ cm_id->local_addr.sin_port,
+ cm_id->remote_addr.sin_port, 0);
+
+ if (!rt) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep);
+ printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
+ err = -EHOSTUNREACH;
+ goto fail3;
+ }
+
+
+ if (!(rt->rt_ifp->if_flags & IFCAP_TOE)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc8 %p", __func__, ep);
+ printf("%s - interface not TOE capable.\n", __func__);
+ goto fail3;
+ }
+ tdev = TOEDEV(rt->rt_ifp);
+
+ if (tdev == NULL) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cc9 %p", __func__, ep);
+ printf("%s - No toedev for interface.\n", __func__);
+ goto fail3;
+ }
+ RTFREE(rt);
+
+ state_set(&ep->com, CONNECTING);
+ ep->tos = 0;
+ ep->com.local_addr = cm_id->local_addr;
+ ep->com.remote_addr = cm_id->remote_addr;
+ err = soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr,
+ ep->com.thread);
+
+ if (!err) {
+
+ CTR2(KTR_IW_CXGBE, "%s:cca %p", __func__, ep);
+ goto out;
+ }
+
+fail3:
+ CTR2(KTR_IW_CXGBE, "%s:ccb %p", __func__, ep);
+ RTFREE(rt);
+fail2:
+ cm_id->rem_ref(cm_id);
+ c4iw_put_ep(&ep->com);
+out:
+ CTR2(KTR_IW_CXGBE, "%s:ccE %p", __func__, ep);
+ return err;
+}
+
+/*
+ * iwcm->create_listen. Returns -errno on failure.
+ */
+int
+c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
+{
+ int rc;
+ struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
+ struct c4iw_listen_ep *ep;
+ struct socket *so = cm_id->so;
+
+ ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
+ CTR5(KTR_IW_CXGBE, "%s: cm_id %p, lso %p, ep %p, inp %p", __func__,
+ cm_id, so, ep, so->so_pcb);
+ if (ep == NULL) {
+ log(LOG_ERR, "%s: failed to alloc memory for endpoint\n",
+ __func__);
+ rc = ENOMEM;
+ goto failed;
+ }
+
+ cm_id->add_ref(cm_id);
+ ep->com.cm_id = cm_id;
+ ep->com.dev = dev;
+ ep->backlog = backlog;
+ ep->com.local_addr = cm_id->local_addr;
+ ep->com.thread = curthread;
+ state_set(&ep->com, LISTEN);
+ ep->com.so = so;
+ init_sock(&ep->com);
+
+ rc = solisten(so, ep->backlog, ep->com.thread);
+ if (rc != 0) {
+ log(LOG_ERR, "%s: failed to start listener: %d\n", __func__,
+ rc);
+ close_socket(&ep->com, 0);
+ cm_id->rem_ref(cm_id);
+ c4iw_put_ep(&ep->com);
+ goto failed;
+ }
+
+ cm_id->provider_data = ep;
+ return (0);
+
+failed:
+ CTR3(KTR_IW_CXGBE, "%s: cm_id %p, FAILED (%d)", __func__, cm_id, rc);
+ return (-rc);
+}
+
+int
+c4iw_destroy_listen(struct iw_cm_id *cm_id)
+{
+ int rc;
+ struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
+
+ CTR4(KTR_IW_CXGBE, "%s: cm_id %p, so %p, inp %p", __func__, cm_id,
+ cm_id->so, cm_id->so->so_pcb);
+
+ state_set(&ep->com, DEAD);
+ rc = close_socket(&ep->com, 0);
+ cm_id->rem_ref(cm_id);
+ c4iw_put_ep(&ep->com);
+
+ return (rc);
+}
+
+int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
+{
+ int ret = 0;
+ int close = 0;
+ int fatal = 0;
+ struct c4iw_rdev *rdev;
+
+ mutex_lock(&ep->com.mutex);
+
+ CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep);
+
+ rdev = &ep->com.dev->rdev;
+
+ if (c4iw_fatal_error(rdev)) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep);
+ fatal = 1;
+ close_complete_upcall(ep);
+ ep->com.state = DEAD;
+ }
+ CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep,
+ states[ep->com.state]);
+
+ switch (ep->com.state) {
+
+ case MPA_REQ_WAIT:
+ case MPA_REQ_SENT:
+ case MPA_REQ_RCVD:
+ case MPA_REP_SENT:
+ case FPDU_MODE:
+ close = 1;
+ if (abrupt)
+ ep->com.state = ABORTING;
+ else {
+ ep->com.state = CLOSING;
+ START_EP_TIMER(ep);
+ }
+ set_bit(CLOSE_SENT, &ep->com.flags);
+ break;
+
+ case CLOSING:
+
+ if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
+
+ close = 1;
+ if (abrupt) {
+ STOP_EP_TIMER(ep);
+ ep->com.state = ABORTING;
+ } else
+ ep->com.state = MORIBUND;
+ }
+ break;
+
+ case MORIBUND:
+ case ABORTING:
+ case DEAD:
+ CTR3(KTR_IW_CXGBE,
+ "%s ignoring disconnect ep %p state %u", __func__,
+ ep, ep->com.state);
+ break;
+
+ default:
+ BUG();
+ break;
+ }
+
+ mutex_unlock(&ep->com.mutex);
+
+ if (close) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep);
+
+ if (abrupt) {
+
+ CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep);
+ set_bit(EP_DISC_ABORT, &ep->com.history);
+ ret = abort_connection(ep);
+ } else {
+
+ CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep);
+ set_bit(EP_DISC_CLOSE, &ep->com.history);
+
+ if (!ep->parent_ep)
+ __state_set(&ep->com, MORIBUND);
+ ret = shutdown_socket(&ep->com);
+ }
+
+ if (ret) {
+
+ fatal = 1;
+ }
+ }
+
+ if (fatal) {
+
+ release_ep_resources(ep);
+ CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep);
+ return ret;
+}
+
+#ifdef C4IW_EP_REDIRECT
+int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
+ struct l2t_entry *l2t)
+{
+ struct c4iw_ep *ep = ctx;
+
+ if (ep->dst != old)
+ return 0;
+
+ PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new,
+ l2t);
+ dst_hold(new);
+ cxgb4_l2t_release(ep->l2t);
+ ep->l2t = l2t;
+ dst_release(old);
+ ep->dst = new;
+ return 1;
+}
+#endif
+
+
+
+static void ep_timeout(unsigned long arg)
+{
+ struct c4iw_ep *ep = (struct c4iw_ep *)arg;
+ int kickit = 0;
+
+ CTR2(KTR_IW_CXGBE, "%s:etB %p", __func__, ep);
+ spin_lock(&timeout_lock);
+
+ if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
+
+ list_add_tail(&ep->entry, &timeout_list);
+ kickit = 1;
+ }
+ spin_unlock(&timeout_lock);
+
+ if (kickit) {
+
+ CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep);
+ queue_work(c4iw_taskq, &c4iw_task);
+ }
+ CTR2(KTR_IW_CXGBE, "%s:etE %p", __func__, ep);
+}
+
+static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl)
+{
+ uint64_t val = be64toh(*rpl);
+ int ret;
+ struct c4iw_wr_wait *wr_waitp;
+
+ ret = (int)((val >> 8) & 0xff);
+ wr_waitp = (struct c4iw_wr_wait *)rpl[1];
+ CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret);
+ if (wr_waitp)
+ c4iw_wake_up(wr_waitp, ret ? -ret : 0);
+
+ return (0);
+}
+
+static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl)
+{
+ struct t4_cqe cqe =*(const struct t4_cqe *)(&rpl[0]);
+
+ CTR2(KTR_IW_CXGBE, "%s rpl %p", __func__, rpl);
+ c4iw_ev_dispatch(sc->iwarp_softc, &cqe);
+
+ return (0);
+}
+
+static int terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
+{
+
+ struct adapter *sc = iq->adapter;
+
+ const struct cpl_rdma_terminate *rpl = (const void *)(rss + 1);
+ unsigned int tid = GET_TID(rpl);
+ struct c4iw_qp_attributes attrs;
+ struct toepcb *toep = lookup_tid(sc, tid);
+ struct socket *so = inp_inpcbtosocket(toep->inp);
+ struct c4iw_ep *ep = so->so_rcv.sb_upcallarg;
+
+ CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep);
+
+ if (ep && ep->com.qp) {
+
+ printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
+ ep->com.qp->wq.sq.qid);
+ attrs.next_state = C4IW_QP_STATE_TERMINATE;
+ c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs,
+ 1);
+ } else
+ printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
+ CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep);
+
+ return 0;
+}
+
+ void
+c4iw_cm_init_cpl(struct adapter *sc)
+{
+
+ t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, terminate);
+ t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, fw6_wr_rpl);
+ t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, fw6_cqe_handler);
+ t4_register_an_handler(sc, c4iw_ev_handler);
+}
+
+ void
+c4iw_cm_term_cpl(struct adapter *sc)
+{
+
+ t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, NULL);
+ t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, NULL);
+ t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, NULL);
+}
+
+int __init c4iw_cm_init(void)
+{
+
+ TAILQ_INIT(&req_list);
+ spin_lock_init(&req_lock);
+ INIT_LIST_HEAD(&timeout_list);
+ spin_lock_init(&timeout_lock);
+
+ INIT_WORK(&c4iw_task, process_req);
+
+ c4iw_taskq = create_singlethread_workqueue("iw_cxgbe");
+ if (!c4iw_taskq)
+ return -ENOMEM;
+
+
+ return 0;
+}
+
+void __exit c4iw_cm_term(void)
+{
+ WARN_ON(!TAILQ_EMPTY(&req_list));
+ WARN_ON(!list_empty(&timeout_list));
+ flush_workqueue(c4iw_taskq);
+ destroy_workqueue(c4iw_taskq);
+}
+#endif
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