diff options
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch_cm.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_cm.c | 2081 |
1 files changed, 2081 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c new file mode 100644 index 00000000000..a522b1baa3b --- /dev/null +++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c @@ -0,0 +1,2081 @@ +/* + * Copyright (c) 2006 Chelsio, Inc. All rights reserved. + * Copyright (c) 2006 Open Grid Computing, 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 <linux/module.h> +#include <linux/list.h> +#include <linux/workqueue.h> +#include <linux/skbuff.h> +#include <linux/timer.h> +#include <linux/notifier.h> + +#include <net/neighbour.h> +#include <net/netevent.h> +#include <net/route.h> + +#include "tcb.h" +#include "cxgb3_offload.h" +#include "iwch.h" +#include "iwch_provider.h" +#include "iwch_cm.h" + +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, +}; + +static int ep_timeout_secs = 10; +module_param(ep_timeout_secs, int, 0444); +MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " + "in seconds (default=10)"); + +static int mpa_rev = 1; +module_param(mpa_rev, int, 0444); +MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " + "1 is spec compliant. (default=1)"); + +static int markers_enabled = 0; +module_param(markers_enabled, int, 0444); +MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); + +static int crc_enabled = 1; +module_param(crc_enabled, int, 0444); +MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); + +static int rcv_win = 256 * 1024; +module_param(rcv_win, int, 0444); +MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256)"); + +static int snd_win = 32 * 1024; +module_param(snd_win, int, 0444); +MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=32KB)"); + +static unsigned int nocong = 0; +module_param(nocong, uint, 0444); +MODULE_PARM_DESC(nocong, "Turn off congestion control (default=0)"); + +static unsigned int cong_flavor = 1; +module_param(cong_flavor, uint, 0444); +MODULE_PARM_DESC(cong_flavor, "TCP Congestion control flavor (default=1)"); + +static void process_work(struct work_struct *work); +static struct workqueue_struct *workq; +static DECLARE_WORK(skb_work, process_work); + +static struct sk_buff_head rxq; +static cxgb3_cpl_handler_func work_handlers[NUM_CPL_CMDS]; + +static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); +static void ep_timeout(unsigned long arg); +static void connect_reply_upcall(struct iwch_ep *ep, int status); + +static void start_ep_timer(struct iwch_ep *ep) +{ + PDBG("%s ep %p\n", __FUNCTION__, ep); + if (timer_pending(&ep->timer)) { + PDBG("%s stopped / restarted timer ep %p\n", __FUNCTION__, ep); + del_timer_sync(&ep->timer); + } else + 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 iwch_ep *ep) +{ + PDBG("%s ep %p\n", __FUNCTION__, ep); + del_timer_sync(&ep->timer); + put_ep(&ep->com); +} + +static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb) +{ + struct cpl_tid_release *req; + + skb = get_skb(skb, sizeof *req, GFP_KERNEL); + if (!skb) + return; + req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); + skb->priority = CPL_PRIORITY_SETUP; + tdev->send(tdev, skb); + return; +} + +int iwch_quiesce_tid(struct iwch_ep *ep) +{ + struct cpl_set_tcb_field *req; + struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + + if (!skb) + return -ENOMEM; + req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); + req->reply = 0; + req->cpu_idx = 0; + req->word = htons(W_TCB_RX_QUIESCE); + req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); + req->val = cpu_to_be64(1 << S_TCB_RX_QUIESCE); + + skb->priority = CPL_PRIORITY_DATA; + ep->com.tdev->send(ep->com.tdev, skb); + return 0; +} + +int iwch_resume_tid(struct iwch_ep *ep) +{ + struct cpl_set_tcb_field *req; + struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + + if (!skb) + return -ENOMEM; + req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); + req->reply = 0; + req->cpu_idx = 0; + req->word = htons(W_TCB_RX_QUIESCE); + req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); + req->val = 0; + + skb->priority = CPL_PRIORITY_DATA; + ep->com.tdev->send(ep->com.tdev, skb); + return 0; +} + +static void set_emss(struct iwch_ep *ep, u16 opt) +{ + PDBG("%s ep %p opt %u\n", __FUNCTION__, ep, opt); + ep->emss = T3C_DATA(ep->com.tdev)->mtus[G_TCPOPT_MSS(opt)] - 40; + if (G_TCPOPT_TSTAMP(opt)) + ep->emss -= 12; + if (ep->emss < 128) + ep->emss = 128; + PDBG("emss=%d\n", ep->emss); +} + +static enum iwch_ep_state state_read(struct iwch_ep_common *epc) +{ + unsigned long flags; + enum iwch_ep_state state; + + spin_lock_irqsave(&epc->lock, flags); + state = epc->state; + spin_unlock_irqrestore(&epc->lock, flags); + return state; +} + +static inline void __state_set(struct iwch_ep_common *epc, + enum iwch_ep_state new) +{ + epc->state = new; +} + +static void state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) +{ + unsigned long flags; + + spin_lock_irqsave(&epc->lock, flags); + PDBG("%s - %s -> %s\n", __FUNCTION__, states[epc->state], states[new]); + __state_set(epc, new); + spin_unlock_irqrestore(&epc->lock, flags); + return; +} + +static void *alloc_ep(int size, gfp_t gfp) +{ + struct iwch_ep_common *epc; + + epc = kmalloc(size, gfp); + if (epc) { + memset(epc, 0, size); + kref_init(&epc->kref); + spin_lock_init(&epc->lock); + init_waitqueue_head(&epc->waitq); + } + PDBG("%s alloc ep %p\n", __FUNCTION__, epc); + return epc; +} + +void __free_ep(struct kref *kref) +{ + struct iwch_ep_common *epc; + epc = container_of(kref, struct iwch_ep_common, kref); + PDBG("%s ep %p state %s\n", __FUNCTION__, epc, states[state_read(epc)]); + kfree(epc); +} + +static void release_ep_resources(struct iwch_ep *ep) +{ + PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid); + cxgb3_remove_tid(ep->com.tdev, (void *)ep, ep->hwtid); + dst_release(ep->dst); + l2t_release(L2DATA(ep->com.tdev), ep->l2t); + if (ep->com.tdev->type == T3B) + release_tid(ep->com.tdev, ep->hwtid, NULL); + put_ep(&ep->com); +} + +static void process_work(struct work_struct *work) +{ + struct sk_buff *skb = NULL; + void *ep; + struct t3cdev *tdev; + int ret; + + while ((skb = skb_dequeue(&rxq))) { + ep = *((void **) (skb->cb)); + tdev = *((struct t3cdev **) (skb->cb + sizeof(void *))); + ret = work_handlers[G_OPCODE(ntohl((__force __be32)skb->csum))](tdev, skb, ep); + if (ret & CPL_RET_BUF_DONE) + kfree_skb(skb); + + /* + * ep was referenced in sched(), and is freed here. + */ + put_ep((struct iwch_ep_common *)ep); + } +} + +static int status2errno(int status) +{ + switch (status) { + case CPL_ERR_NONE: + return 0; + case CPL_ERR_CONN_RESET: + return -ECONNRESET; + case CPL_ERR_ARP_MISS: + return -EHOSTUNREACH; + case CPL_ERR_CONN_TIMEDOUT: + return -ETIMEDOUT; + case CPL_ERR_TCAM_FULL: + return -ENOMEM; + case CPL_ERR_CONN_EXIST: + return -EADDRINUSE; + default: + return -EIO; + } +} + +/* + * Try and reuse skbs already allocated... + */ +static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) +{ + if (skb) { + BUG_ON(skb_cloned(skb)); + skb_trim(skb, 0); + skb_get(skb); + } else { + skb = alloc_skb(len, gfp); + } + return skb; +} + +static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip, + __be32 peer_ip, __be16 local_port, + __be16 peer_port, u8 tos) +{ + struct rtable *rt; + struct flowi fl = { + .oif = 0, + .nl_u = { + .ip4_u = { + .daddr = peer_ip, + .saddr = local_ip, + .tos = tos} + }, + .proto = IPPROTO_TCP, + .uli_u = { + .ports = { + .sport = local_port, + .dport = peer_port} + } + }; + + if (ip_route_output_flow(&rt, &fl, NULL, 0)) + return NULL; + return rt; +} + +static unsigned int find_best_mtu(const struct t3c_data *d, unsigned short mtu) +{ + int i = 0; + + while (i < d->nmtus - 1 && d->mtus[i + 1] <= mtu) + ++i; + return i; +} + +static void arp_failure_discard(struct t3cdev *dev, struct sk_buff *skb) +{ + PDBG("%s t3cdev %p\n", __FUNCTION__, dev); + kfree_skb(skb); +} + +/* + * Handle an ARP failure for an active open. + */ +static void act_open_req_arp_failure(struct t3cdev *dev, struct sk_buff *skb) +{ + printk(KERN_ERR MOD "ARP failure duing connect\n"); + kfree_skb(skb); +} + +/* + * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant + * and send it along. + */ +static void abort_arp_failure(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_abort_req *req = cplhdr(skb); + + PDBG("%s t3cdev %p\n", __FUNCTION__, dev); + req->cmd = CPL_ABORT_NO_RST; + cxgb3_ofld_send(dev, skb); +} + +static int send_halfclose(struct iwch_ep *ep, gfp_t gfp) +{ + struct cpl_close_con_req *req; + struct sk_buff *skb; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + skb = get_skb(NULL, sizeof(*req), gfp); + if (!skb) { + printk(KERN_ERR MOD "%s - failed to alloc skb\n", __FUNCTION__); + return -ENOMEM; + } + skb->priority = CPL_PRIORITY_DATA; + set_arp_failure_handler(skb, arp_failure_discard); + req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON)); + req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid)); + l2t_send(ep->com.tdev, skb, ep->l2t); + return 0; +} + +static int send_abort(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) +{ + struct cpl_abort_req *req; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + skb = get_skb(skb, sizeof(*req), gfp); + if (!skb) { + printk(KERN_ERR MOD "%s - failed to alloc skb.\n", + __FUNCTION__); + return -ENOMEM; + } + skb->priority = CPL_PRIORITY_DATA; + set_arp_failure_handler(skb, abort_arp_failure); + req = (struct cpl_abort_req *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_REQ)); + req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); + req->cmd = CPL_ABORT_SEND_RST; + l2t_send(ep->com.tdev, skb, ep->l2t); + return 0; +} + +static int send_connect(struct iwch_ep *ep) +{ + struct cpl_act_open_req *req; + struct sk_buff *skb; + u32 opt0h, opt0l, opt2; + unsigned int mtu_idx; + int wscale; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + + skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "%s - failed to alloc skb.\n", + __FUNCTION__); + return -ENOMEM; + } + mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); + wscale = compute_wscale(rcv_win); + opt0h = V_NAGLE(0) | + V_NO_CONG(nocong) | + V_KEEP_ALIVE(1) | + F_TCAM_BYPASS | + V_WND_SCALE(wscale) | + V_MSS_IDX(mtu_idx) | + V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); + opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); + opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor); + skb->priority = CPL_PRIORITY_SETUP; + set_arp_failure_handler(skb, act_open_req_arp_failure); + + req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid)); + req->local_port = ep->com.local_addr.sin_port; + req->peer_port = ep->com.remote_addr.sin_port; + req->local_ip = ep->com.local_addr.sin_addr.s_addr; + req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; + req->opt0h = htonl(opt0h); + req->opt0l = htonl(opt0l); + req->params = 0; + req->opt2 = htonl(opt2); + l2t_send(ep->com.tdev, skb, ep->l2t); + return 0; +} + +static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb) +{ + int mpalen; + struct tx_data_wr *req; + struct mpa_message *mpa; + int len; + + PDBG("%s ep %p pd_len %d\n", __FUNCTION__, ep, ep->plen); + + BUG_ON(skb_cloned(skb)); + + mpalen = sizeof(*mpa) + ep->plen; + if (skb->data + mpalen + sizeof(*req) > skb->end) { + kfree_skb(skb); + skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL); + if (!skb) { + connect_reply_upcall(ep, -ENOMEM); + return; + } + } + skb_trim(skb, 0); + skb_reserve(skb, sizeof(*req)); + skb_put(skb, mpalen); + skb->priority = CPL_PRIORITY_DATA; + mpa = (struct mpa_message *) skb->data; + memset(mpa, 0, sizeof(*mpa)); + memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); + mpa->flags = (crc_enabled ? MPA_CRC : 0) | + (markers_enabled ? MPA_MARKERS : 0); + mpa->private_data_size = htons(ep->plen); + mpa->revision = mpa_rev; + + if (ep->plen) + memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); + + /* + * Reference the mpa skb. This ensures the data area + * will remain in memory until the hw acks the tx. + * Function tx_ack() will deref it. + */ + skb_get(skb); + set_arp_failure_handler(skb, arp_failure_discard); + skb->h.raw = skb->data; + len = skb->len; + req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); + req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)); + req->wr_lo = htonl(V_WR_TID(ep->hwtid)); + req->len = htonl(len); + req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | + V_TX_SNDBUF(snd_win>>15)); + req->flags = htonl(F_TX_IMM_ACK|F_TX_INIT); + req->sndseq = htonl(ep->snd_seq); + BUG_ON(ep->mpa_skb); + ep->mpa_skb = skb; + l2t_send(ep->com.tdev, skb, ep->l2t); + start_ep_timer(ep); + state_set(&ep->com, MPA_REQ_SENT); + return; +} + +static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen) +{ + int mpalen; + struct tx_data_wr *req; + struct mpa_message *mpa; + struct sk_buff *skb; + + PDBG("%s ep %p plen %d\n", __FUNCTION__, ep, plen); + + mpalen = sizeof(*mpa) + plen; + + skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __FUNCTION__); + return -ENOMEM; + } + skb_reserve(skb, sizeof(*req)); + mpa = (struct mpa_message *) skb_put(skb, 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 (plen) + memcpy(mpa->private_data, pdata, plen); + + /* + * Reference the mpa skb again. This ensures the data area + * will remain in memory until the hw acks the tx. + * Function tx_ack() will deref it. + */ + skb_get(skb); + skb->priority = CPL_PRIORITY_DATA; + set_arp_failure_handler(skb, arp_failure_discard); + skb->h.raw = skb->data; + req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); + req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)); + req->wr_lo = htonl(V_WR_TID(ep->hwtid)); + req->len = htonl(mpalen); + req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | + V_TX_SNDBUF(snd_win>>15)); + req->flags = htonl(F_TX_IMM_ACK|F_TX_INIT); + req->sndseq = htonl(ep->snd_seq); + BUG_ON(ep->mpa_skb); + ep->mpa_skb = skb; + l2t_send(ep->com.tdev, skb, ep->l2t); + return 0; +} + +static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen) +{ + int mpalen; + struct tx_data_wr *req; + struct mpa_message *mpa; + int len; + struct sk_buff *skb; + + PDBG("%s ep %p plen %d\n", __FUNCTION__, ep, plen); + + mpalen = sizeof(*mpa) + plen; + + skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __FUNCTION__); + return -ENOMEM; + } + skb->priority = CPL_PRIORITY_DATA; + skb_reserve(skb, sizeof(*req)); + mpa = (struct mpa_message *) skb_put(skb, 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 = mpa_rev; + mpa->private_data_size = htons(plen); + if (plen) + memcpy(mpa->private_data, pdata, plen); + + /* + * Reference the mpa skb. This ensures the data area + * will remain in memory until the hw acks the tx. + * Function tx_ack() will deref it. + */ + skb_get(skb); + set_arp_failure_handler(skb, arp_failure_discard); + skb->h.raw = skb->data; + len = skb->len; + req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); + req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)); + req->wr_lo = htonl(V_WR_TID(ep->hwtid)); + req->len = htonl(len); + req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | + V_TX_SNDBUF(snd_win>>15)); + req->flags = htonl(F_TX_MORE | F_TX_IMM_ACK | F_TX_INIT); + req->sndseq = htonl(ep->snd_seq); + ep->mpa_skb = skb; + state_set(&ep->com, MPA_REP_SENT); + l2t_send(ep->com.tdev, skb, ep->l2t); + return 0; +} + +static int act_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct cpl_act_establish *req = cplhdr(skb); + unsigned int tid = GET_TID(req); + + PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, tid); + + dst_confirm(ep->dst); + + /* setup the hwtid for this connection */ + ep->hwtid = tid; + cxgb3_insert_tid(ep->com.tdev, &t3c_client, ep, tid); + + ep->snd_seq = ntohl(req->snd_isn); + + set_emss(ep, ntohs(req->tcp_opt)); + + /* dealloc the atid */ + cxgb3_free_atid(ep->com.tdev, ep->atid); + + /* start MPA negotiation */ + send_mpa_req(ep, skb); + + return 0; +} + +static void abort_connection(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) +{ + PDBG("%s ep %p\n", __FILE__, ep); + state_set(&ep->com, ABORTING); + send_abort(ep, skb, gfp); +} + +static void close_complete_upcall(struct iwch_ep *ep) +{ + struct iw_cm_event event; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + memset(&event, 0, sizeof(event)); + event.event = IW_CM_EVENT_CLOSE; + if (ep->com.cm_id) { + PDBG("close complete delivered ep %p cm_id %p tid %d\n", + ep, ep->com.cm_id, ep->hwtid); + 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; + } +} + +static void peer_close_upcall(struct iwch_ep *ep) +{ + struct iw_cm_event event; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + memset(&event, 0, sizeof(event)); + event.event = IW_CM_EVENT_DISCONNECT; + if (ep->com.cm_id) { + PDBG("peer close delivered ep %p cm_id %p tid %d\n", + ep, ep->com.cm_id, ep->hwtid); + ep->com.cm_id->event_handler(ep->com.cm_id, &event); + } +} + +static void peer_abort_upcall(struct iwch_ep *ep) +{ + struct iw_cm_event event; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + memset(&event, 0, sizeof(event)); + event.event = IW_CM_EVENT_CLOSE; + event.status = -ECONNRESET; + if (ep->com.cm_id) { + PDBG("abort delivered ep %p cm_id %p tid %d\n", ep, + ep->com.cm_id, ep->hwtid); + 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; + } +} + +static void connect_reply_upcall(struct iwch_ep *ep, int status) +{ + struct iw_cm_event event; + + PDBG("%s ep %p status %d\n", __FUNCTION__, ep, status); + memset(&event, 0, sizeof(event)); + event.event = IW_CM_EVENT_CONNECT_REPLY; + event.status = status; + event.local_addr = ep->com.local_addr; + event.remote_addr = ep->com.remote_addr; + + if ((status == 0) || (status == -ECONNREFUSED)) { + event.private_data_len = ep->plen; + event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); + } + if (ep->com.cm_id) { + PDBG("%s ep %p tid %d status %d\n", __FUNCTION__, ep, + ep->hwtid, status); + ep->com.cm_id->event_handler(ep->com.cm_id, &event); + } + if (status < 0) { + ep->com.cm_id->rem_ref(ep->com.cm_id); + ep->com.cm_id = NULL; + ep->com.qp = NULL; + } +} + +static void connect_request_upcall(struct iwch_ep *ep) +{ + struct iw_cm_event event; + + PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid); + 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.private_data_len = ep->plen; + event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); + event.provider_data = ep; + if (state_read(&ep->parent_ep->com) != DEAD) + ep->parent_ep->com.cm_id->event_handler( + ep->parent_ep->com.cm_id, + &event); + put_ep(&ep->parent_ep->com); + ep->parent_ep = NULL; +} + +static void established_upcall(struct iwch_ep *ep) +{ + struct iw_cm_event event; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + memset(&event, 0, sizeof(event)); + event.event = IW_CM_EVENT_ESTABLISHED; + if (ep->com.cm_id) { + PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid); + ep->com.cm_id->event_handler(ep->com.cm_id, &event); + } +} + +static int update_rx_credits(struct iwch_ep *ep, u32 credits) +{ + struct cpl_rx_data_ack *req; + struct sk_buff *skb; + + PDBG("%s ep %p credits %u\n", __FUNCTION__, ep, credits); + skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); + return 0; + } + + req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid)); + req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1)); + skb->priority = CPL_PRIORITY_ACK; + ep->com.tdev->send(ep->com.tdev, skb); + return credits; +} + +static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb) +{ + struct mpa_message *mpa; + u16 plen; + struct iwch_qp_attributes attrs; + enum iwch_qp_attr_mask mask; + int err; + + PDBG("%s ep %p\n", __FUNCTION__, 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; + + /* + * If we get more than the supported amount of private data + * then we must fail this connection. + */ + if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { + err = -EINVAL; + goto err; + } + + /* + * copy the new data into our accumulation buffer. + */ + memcpy(&(ep->mpa_pkt[ep->mpa_pkt_len]), skb->data, skb->len); + ep->mpa_pkt_len += skb->len; + + /* + * 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) { + err = -EPROTO; + goto err; + } + if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { + err = -EPROTO; + goto err; + } + + plen = ntohs(mpa->private_data_size); + + /* + * Fail if there's too much private data. + */ + if (plen > MPA_MAX_PRIVATE_DATA) { + err = -EPROTO; + goto err; + } + + /* + * If plen does not account for pkt size + */ + if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { + 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)) + return; + + if (mpa->flags & MPA_REJECT) { + 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_rev; + PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " + "xmit_marker_enabled=%d, version=%d\n", __FUNCTION__, + ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, + ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); + + attrs.mpa_attr = ep->mpa_attr; + attrs.max_ird = ep->ird; + attrs.max_ord = ep->ord; + attrs.llp_stream_handle = ep; + attrs.next_state = IWCH_QP_STATE_RTS; + + mask = IWCH_QP_ATTR_NEXT_STATE | + IWCH_QP_ATTR_LLP_STREAM_HANDLE | IWCH_QP_ATTR_MPA_ATTR | + IWCH_QP_ATTR_MAX_IRD | IWCH_QP_ATTR_MAX_ORD; + + /* bind QP and TID with INIT_WR */ + err = iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, mask, &attrs, 1); + if (!err) + goto out; +err: + abort_connection(ep, skb, GFP_KERNEL); +out: + connect_reply_upcall(ep, err); + return; +} + +static void process_mpa_request(struct iwch_ep *ep, struct sk_buff *skb) +{ + struct mpa_message *mpa; + u16 plen; + + PDBG("%s ep %p\n", __FUNCTION__, 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_WAIT) + return; + + /* + * If we get more than the supported amount of private data + * then we must fail this connection. + */ + if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { + abort_connection(ep, skb, GFP_KERNEL); + return; + } + + PDBG("%s enter (%s line %u)\n", __FUNCTION__, __FILE__, __LINE__); + + /* + * Copy the new data into our accumulation buffer. + */ + memcpy(&(ep->mpa_pkt[ep->mpa_pkt_len]), skb->data, skb->len); + ep->mpa_pkt_len += skb->len; + + /* + * If we don't even have the mpa message, then bail. + * We'll continue process when more data arrives. + */ + if (ep->mpa_pkt_len < sizeof(*mpa)) + return; + PDBG("%s enter (%s line %u)\n", __FUNCTION__, __FILE__, __LINE__); + mpa = (struct mpa_message *) ep->mpa_pkt; + + /* + * Validate MPA Header. + */ + if (mpa->revision != mpa_rev) { + abort_connection(ep, skb, GFP_KERNEL); + return; + } + + if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { + abort_connection(ep, skb, GFP_KERNEL); + return; + } + + plen = ntohs(mpa->private_data_size); + + /* + * Fail if there's too much private data. + */ + if (plen > MPA_MAX_PRIVATE_DATA) { + abort_connection(ep, skb, GFP_KERNEL); + return; + } + + /* + * If plen does not account for pkt size + */ + if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { + abort_connection(ep, skb, GFP_KERNEL); + return; + } + 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.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_rev; + PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " + "xmit_marker_enabled=%d, version=%d\n", __FUNCTION__, + 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); + + /* drive upcall */ + connect_request_upcall(ep); + return; +} + +static int rx_data(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct cpl_rx_data *hdr = cplhdr(skb); + unsigned int dlen = ntohs(hdr->len); + + PDBG("%s ep %p dlen %u\n", __FUNCTION__, ep, dlen); + + skb_pull(skb, sizeof(*hdr)); + skb_trim(skb, dlen); + + switch (state_read(&ep->com)) { + case MPA_REQ_SENT: + process_mpa_reply(ep, skb); + break; + case MPA_REQ_WAIT: + process_mpa_request(ep, skb); + break; + case MPA_REP_SENT: + break; + default: + printk(KERN_ERR MOD "%s Unexpected streaming data." + " ep %p state %d tid %d\n", + __FUNCTION__, ep, state_read(&ep->com), ep->hwtid); + + /* + * The ep will timeout and inform the ULP of the failure. + * See ep_timeout(). + */ + break; + } + + /* update RX credits */ + update_rx_credits(ep, dlen); + + return CPL_RET_BUF_DONE; +} + +/* + * 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. + */ +static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct cpl_wr_ack *hdr = cplhdr(skb); + unsigned int credits = ntohs(hdr->credits); + enum iwch_qp_attr_mask mask; + + PDBG("%s ep %p credits %u\n", __FUNCTION__, ep, credits); + + if (credits == 0) + return CPL_RET_BUF_DONE; + BUG_ON(credits != 1); + BUG_ON(ep->mpa_skb == NULL); + kfree_skb(ep->mpa_skb); + ep->mpa_skb = NULL; + dst_confirm(ep->dst); + if (state_read(&ep->com) == MPA_REP_SENT) { + struct iwch_qp_attributes attrs; + + /* bind QP to EP and move to RTS */ + attrs.mpa_attr = ep->mpa_attr; + attrs.max_ird = ep->ord; + attrs.max_ord = ep->ord; + attrs.llp_stream_handle = ep; + attrs.next_state = IWCH_QP_STATE_RTS; + + /* bind QP and TID with INIT_WR */ + mask = IWCH_QP_ATTR_NEXT_STATE | + IWCH_QP_ATTR_LLP_STREAM_HANDLE | + IWCH_QP_ATTR_MPA_ATTR | + IWCH_QP_ATTR_MAX_IRD | + IWCH_QP_ATTR_MAX_ORD; + + ep->com.rpl_err = iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, mask, &attrs, 1); + + if (!ep->com.rpl_err) { + state_set(&ep->com, FPDU_MODE); + established_upcall(ep); + } + + ep->com.rpl_done = 1; + PDBG("waking up ep %p\n", ep); + wake_up(&ep->com.waitq); + } + return CPL_RET_BUF_DONE; +} + +static int abort_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + + close_complete_upcall(ep); + state_set(&ep->com, DEAD); + release_ep_resources(ep); + return CPL_RET_BUF_DONE; +} + +static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct cpl_act_open_rpl *rpl = cplhdr(skb); + + PDBG("%s ep %p status %u errno %d\n", __FUNCTION__, ep, rpl->status, + status2errno(rpl->status)); + connect_reply_upcall(ep, status2errno(rpl->status)); + state_set(&ep->com, DEAD); + if (ep->com.tdev->type == T3B) + release_tid(ep->com.tdev, GET_TID(rpl), NULL); + cxgb3_free_atid(ep->com.tdev, ep->atid); + dst_release(ep->dst); + l2t_release(L2DATA(ep->com.tdev), ep->l2t); + put_ep(&ep->com); + return CPL_RET_BUF_DONE; +} + +static int listen_start(struct iwch_listen_ep *ep) +{ + struct sk_buff *skb; + struct cpl_pass_open_req *req; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "t3c_listen_start failed to alloc skb!\n"); + return -ENOMEM; + } + + req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid)); + req->local_port = ep->com.local_addr.sin_port; + req->local_ip = ep->com.local_addr.sin_addr.s_addr; + req->peer_port = 0; + req->peer_ip = 0; + req->peer_netmask = 0; + req->opt0h = htonl(F_DELACK | F_TCAM_BYPASS); + req->opt0l = htonl(V_RCV_BUFSIZ(rcv_win>>10)); + req->opt1 = htonl(V_CONN_POLICY(CPL_CONN_POLICY_ASK)); + + skb->priority = 1; + ep->com.tdev->send(ep->com.tdev, skb); + return 0; +} + +static int pass_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_listen_ep *ep = ctx; + struct cpl_pass_open_rpl *rpl = cplhdr(skb); + + PDBG("%s ep %p status %d error %d\n", __FUNCTION__, ep, + rpl->status, status2errno(rpl->status)); + ep->com.rpl_err = status2errno(rpl->status); + ep->com.rpl_done = 1; + wake_up(&ep->com.waitq); + + return CPL_RET_BUF_DONE; +} + +static int listen_stop(struct iwch_listen_ep *ep) +{ + struct sk_buff *skb; + struct cpl_close_listserv_req *req; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + if (!skb) { + printk(KERN_ERR MOD "%s - failed to alloc skb\n", __FUNCTION__); + return -ENOMEM; + } + req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req)); + req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid)); + skb->priority = 1; + ep->com.tdev->send(ep->com.tdev, skb); + return 0; +} + +static int close_listsrv_rpl(struct t3cdev *tdev, struct sk_buff *skb, + void *ctx) +{ + struct iwch_listen_ep *ep = ctx; + struct cpl_close_listserv_rpl *rpl = cplhdr(skb); + + PDBG("%s ep %p\n", __FUNCTION__, ep); + ep->com.rpl_err = status2errno(rpl->status); + ep->com.rpl_done = 1; + wake_up(&ep->com.waitq); + return CPL_RET_BUF_DONE; +} + +static void accept_cr(struct iwch_ep *ep, __be32 peer_ip, struct sk_buff *skb) +{ + struct cpl_pass_accept_rpl *rpl; + unsigned int mtu_idx; + u32 opt0h, opt0l, opt2; + int wscale; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + BUG_ON(skb_cloned(skb)); + skb_trim(skb, sizeof(*rpl)); + skb_get(skb); + mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); + wscale = compute_wscale(rcv_win); + opt0h = V_NAGLE(0) | + V_NO_CONG(nocong) | + V_KEEP_ALIVE(1) | + F_TCAM_BYPASS | + V_WND_SCALE(wscale) | + V_MSS_IDX(mtu_idx) | + V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); + opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); + opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor); + + rpl = cplhdr(skb); + rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, ep->hwtid)); + rpl->peer_ip = peer_ip; + rpl->opt0h = htonl(opt0h); + rpl->opt0l_status = htonl(opt0l | CPL_PASS_OPEN_ACCEPT); + rpl->opt2 = htonl(opt2); + rpl->rsvd = rpl->opt2; /* workaround for HW bug */ + skb->priority = CPL_PRIORITY_SETUP; + l2t_send(ep->com.tdev, skb, ep->l2t); + + return; +} + +static void reject_cr(struct t3cdev *tdev, u32 hwtid, __be32 peer_ip, + struct sk_buff *skb) +{ + PDBG("%s t3cdev %p tid %u peer_ip %x\n", __FUNCTION__, tdev, hwtid, + peer_ip); + BUG_ON(skb_cloned(skb)); + skb_trim(skb, sizeof(struct cpl_tid_release)); + skb_get(skb); + + if (tdev->type == T3B) + release_tid(tdev, hwtid, skb); + else { + struct cpl_pass_accept_rpl *rpl; + + rpl = cplhdr(skb); + skb->priority = CPL_PRIORITY_SETUP; + rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); + OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, + hwtid)); + rpl->peer_ip = peer_ip; + rpl->opt0h = htonl(F_TCAM_BYPASS); + rpl->opt0l_status = htonl(CPL_PASS_OPEN_REJECT); + rpl->opt2 = 0; + rpl->rsvd = rpl->opt2; + tdev->send(tdev, skb); + } +} + +static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *child_ep, *parent_ep = ctx; + struct cpl_pass_accept_req *req = cplhdr(skb); + unsigned int hwtid = GET_TID(req); + struct dst_entry *dst; + struct l2t_entry *l2t; + struct rtable *rt; + struct iff_mac tim; + + PDBG("%s parent ep %p tid %u\n", __FUNCTION__, parent_ep, hwtid); + + if (state_read(&parent_ep->com) != LISTEN) { + printk(KERN_ERR "%s - listening ep not in LISTEN\n", + __FUNCTION__); + goto reject; + } + + /* + * Find the netdev for this connection request. + */ + tim.mac_addr = req->dst_mac; + tim.vlan_tag = ntohs(req->vlan_tag); + if (tdev->ctl(tdev, GET_IFF_FROM_MAC, &tim) < 0 || !tim.dev) { + printk(KERN_ERR + "%s bad dst mac %02x %02x %02x %02x %02x %02x\n", + __FUNCTION__, + req->dst_mac[0], + req->dst_mac[1], + req->dst_mac[2], + req->dst_mac[3], + req->dst_mac[4], + req->dst_mac[5]); + goto reject; + } + + /* Find output route */ + rt = find_route(tdev, + req->local_ip, + req->peer_ip, + req->local_port, + req->peer_port, G_PASS_OPEN_TOS(ntohl(req->tos_tid))); + if (!rt) { + printk(KERN_ERR MOD "%s - failed to find dst entry!\n", + __FUNCTION__); + goto reject; + } + dst = &rt->u.dst; + l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev); + if (!l2t) { + printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", + __FUNCTION__); + dst_release(dst); + goto reject; + } + child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); + if (!child_ep) { + printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", + __FUNCTION__); + l2t_release(L2DATA(tdev), l2t); + dst_release(dst); + goto reject; + } + state_set(&child_ep->com, CONNECTING); + child_ep->com.tdev = tdev; + child_ep->com.cm_id = NULL; + child_ep->com.local_addr.sin_family = PF_INET; + child_ep->com.local_addr.sin_port = req->local_port; + child_ep->com.local_addr.sin_addr.s_addr = req->local_ip; + child_ep->com.remote_addr.sin_family = PF_INET; + child_ep->com.remote_addr.sin_port = req->peer_port; + child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip; + get_ep(&parent_ep->com); + child_ep->parent_ep = parent_ep; + child_ep->tos = G_PASS_OPEN_TOS(ntohl(req->tos_tid)); + child_ep->l2t = l2t; + child_ep->dst = dst; + child_ep->hwtid = hwtid; + init_timer(&child_ep->timer); + cxgb3_insert_tid(tdev, &t3c_client, child_ep, hwtid); + accept_cr(child_ep, req->peer_ip, skb); + goto out; +reject: + reject_cr(tdev, hwtid, req->peer_ip, skb); +out: + return CPL_RET_BUF_DONE; +} + +static int pass_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct cpl_pass_establish *req = cplhdr(skb); + + PDBG("%s ep %p\n", __FUNCTION__, ep); + ep->snd_seq = ntohl(req->snd_isn); + + set_emss(ep, ntohs(req->tcp_opt)); + + dst_confirm(ep->dst); + state_set(&ep->com, MPA_REQ_WAIT); + start_ep_timer(ep); + + return CPL_RET_BUF_DONE; +} + +static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct iwch_qp_attributes attrs; + unsigned long flags; + int disconnect = 1; + int release = 0; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + dst_confirm(ep->dst); + + spin_lock_irqsave(&ep->com.lock, flags); + switch (ep->com.state) { + case MPA_REQ_WAIT: + __state_set(&ep->com, CLOSING); + break; + case MPA_REQ_SENT: + __state_set(&ep->com, CLOSING); + connect_reply_upcall(ep, -ECONNRESET); + 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. + */ + __state_set(&ep->com, CLOSING); + get_ep(&ep->com); + break; + case MPA_REP_SENT: + __state_set(&ep->com, CLOSING); + ep->com.rpl_done = 1; + ep->com.rpl_err = -ECONNRESET; + PDBG("waking up ep %p\n", ep); + wake_up(&ep->com.waitq); + break; + case FPDU_MODE: + __state_set(&ep->com, CLOSING); + attrs.next_state = IWCH_QP_STATE_CLOSING; + iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, + IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); + peer_close_upcall(ep); + break; + case ABORTING: + disconnect = 0; + break; + case CLOSING: + start_ep_timer(ep); + __state_set(&ep->com, MORIBUND); + disconnect = 0; + break; + case MORIBUND: + stop_ep_timer(ep); + if (ep->com.cm_id && ep->com.qp) { + attrs.next_state = IWCH_QP_STATE_IDLE; + iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, + IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); + } + close_complete_upcall(ep); + __state_set(&ep->com, DEAD); + release = 1; + disconnect = 0; + break; + case DEAD: + disconnect = 0; + break; + default: + BUG_ON(1); + } + spin_unlock_irqrestore(&ep->com.lock, flags); + if (disconnect) + iwch_ep_disconnect(ep, 0, GFP_KERNEL); + if (release) + release_ep_resources(ep); + return CPL_RET_BUF_DONE; +} + +/* + * Returns whether an ABORT_REQ_RSS message is a negative advice. + */ +static inline int is_neg_adv_abort(unsigned int status) +{ + return status == CPL_ERR_RTX_NEG_ADVICE || + status == CPL_ERR_PERSIST_NEG_ADVICE; +} + +static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct cpl_abort_req_rss *req = cplhdr(skb); + struct iwch_ep *ep = ctx; + struct cpl_abort_rpl *rpl; + struct sk_buff *rpl_skb; + struct iwch_qp_attributes attrs; + int ret; + int state; + + if (is_neg_adv_abort(req->status)) { + PDBG("%s neg_adv_abort ep %p tid %d\n", __FUNCTION__, ep, + ep->hwtid); + t3_l2t_send_event(ep->com.tdev, ep->l2t); + return CPL_RET_BUF_DONE; + } + + state = state_read(&ep->com); + PDBG("%s ep %p state %u\n", __FUNCTION__, ep, state); + switch (state) { + case CONNECTING: + break; + case MPA_REQ_WAIT: + break; + case MPA_REQ_SENT: + connect_reply_upcall(ep, -ECONNRESET); + break; + case MPA_REP_SENT: + ep->com.rpl_done = 1; + ep->com.rpl_err = -ECONNRESET; + PDBG("waking up ep %p\n", ep); + wake_up(&ep->com.waitq); + 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. + */ + get_ep(&ep->com); + break; + case MORIBUND: + stop_ep_timer(ep); + case FPDU_MODE: + case CLOSING: + if (ep->com.cm_id && ep->com.qp) { + attrs.next_state = IWCH_QP_STATE_ERROR; + ret = iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, + &attrs, 1); + if (ret) + printk(KERN_ERR MOD + "%s - qp <- error failed!\n", + __FUNCTION__); + } + peer_abort_upcall(ep); + break; + case ABORTING: + break; + case DEAD: + PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __FUNCTION__); + return CPL_RET_BUF_DONE; + default: + BUG_ON(1); + break; + } + dst_confirm(ep->dst); + + rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); + if (!rpl_skb) { + printk(KERN_ERR MOD "%s - cannot allocate skb!\n", + __FUNCTION__); + dst_release(ep->dst); + l2t_release(L2DATA(ep->com.tdev), ep->l2t); + put_ep(&ep->com); + return CPL_RET_BUF_DONE; + } + rpl_skb->priority = CPL_PRIORITY_DATA; + rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); + rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); + rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); + OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); + rpl->cmd = CPL_ABORT_NO_RST; + ep->com.tdev->send(ep->com.tdev, rpl_skb); + if (state != ABORTING) { + state_set(&ep->com, DEAD); + release_ep_resources(ep); + } + return CPL_RET_BUF_DONE; +} + +static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + struct iwch_qp_attributes attrs; + unsigned long flags; + int release = 0; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + BUG_ON(!ep); + + /* The cm_id may be null if we failed to connect */ + spin_lock_irqsave(&ep->com.lock, flags); + switch (ep->com.state) { + case CLOSING: + start_ep_timer(ep); + __state_set(&ep->com, MORIBUND); + break; + case MORIBUND: + stop_ep_timer(ep); + if ((ep->com.cm_id) && (ep->com.qp)) { + attrs.next_state = IWCH_QP_STATE_IDLE; + iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, + IWCH_QP_ATTR_NEXT_STATE, + &attrs, 1); + } + close_complete_upcall(ep); + __state_set(&ep->com, DEAD); + release = 1; + break; + case DEAD: + default: + BUG_ON(1); + break; + } + spin_unlock_irqrestore(&ep->com.lock, flags); + if (release) + release_ep_resources(ep); + return CPL_RET_BUF_DONE; +} + +/* + * T3A does 3 things when a TERM is received: + * 1) send up a CPL_RDMA_TERMINATE message with the TERM packet + * 2) generate an async event on the QP with the TERMINATE opcode + * 3) post a TERMINATE opcde cqe into the associated CQ. + * + * For (1), we save the message in the qp for later consumer consumption. + * For (2), we move the QP into TERMINATE, post a QP event and disconnect. + * For (3), we toss the CQE in cxio_poll_cq(). + * + * terminate() handles case (1)... + */ +static int terminate(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep *ep = ctx; + + PDBG("%s ep %p\n", __FUNCTION__, ep); + skb_pull(skb, sizeof(struct cpl_rdma_terminate)); + PDBG("%s saving %d bytes of term msg\n", __FUNCTION__, skb->len); + memcpy(ep->com.qp->attr.terminate_buffer, skb->data, skb->len); + ep->com.qp->attr.terminate_msg_len = skb->len; + ep->com.qp->attr.is_terminate_local = 0; + return CPL_RET_BUF_DONE; +} + +static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct cpl_rdma_ec_status *rep = cplhdr(skb); + struct iwch_ep *ep = ctx; + + PDBG("%s ep %p tid %u status %d\n", __FUNCTION__, ep, ep->hwtid, + rep->status); + if (rep->status) { + struct iwch_qp_attributes attrs; + + printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n", + __FUNCTION__, ep->hwtid); + attrs.next_state = IWCH_QP_STATE_ERROR; + iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, + &attrs, 1); + abort_connection(ep, NULL, GFP_KERNEL); + } + return CPL_RET_BUF_DONE; +} + +static void ep_timeout(unsigned long arg) +{ + struct iwch_ep *ep = (struct iwch_ep *)arg; + struct iwch_qp_attributes attrs; + unsigned long flags; + + spin_lock_irqsave(&ep->com.lock, flags); + PDBG("%s ep %p tid %u state %d\n", __FUNCTION__, ep, ep->hwtid, + ep->com.state); + switch (ep->com.state) { + case MPA_REQ_SENT: + connect_reply_upcall(ep, -ETIMEDOUT); + break; + case MPA_REQ_WAIT: + break; + case MORIBUND: + if (ep->com.cm_id && ep->com.qp) { + attrs.next_state = IWCH_QP_STATE_ERROR; + iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, + &attrs, 1); + } + break; + default: + BUG(); + } + __state_set(&ep->com, CLOSING); + spin_unlock_irqrestore(&ep->com.lock, flags); + abort_connection(ep, NULL, GFP_ATOMIC); + put_ep(&ep->com); +} + +int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) +{ + int err; + struct iwch_ep *ep = to_ep(cm_id); + PDBG("%s ep %p tid %u\n", __FUNCTION__, ep, ep->hwtid); + + if (state_read(&ep->com) == DEAD) { + put_ep(&ep->com); + return -ECONNRESET; + } + BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); + state_set(&ep->com, CLOSING); + if (mpa_rev == 0) + abort_connection(ep, NULL, GFP_KERNEL); + else { + err = send_mpa_reject(ep, pdata, pdata_len); + err = send_halfclose(ep, GFP_KERNEL); + } + return 0; +} + +int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) +{ + int err; + struct iwch_qp_attributes attrs; + enum iwch_qp_attr_mask mask; + struct iwch_ep *ep = to_ep(cm_id); + struct iwch_dev *h = to_iwch_dev(cm_id->device); + struct iwch_qp *qp = get_qhp(h, conn_param->qpn); + + PDBG("%s ep %p tid %u\n", __FUNCTION__, ep, ep->hwtid); + if (state_read(&ep->com) == DEAD) { + put_ep(&ep->com); + return -ECONNRESET; + } + + BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); + BUG_ON(!qp); + + if ((conn_param->ord > qp->rhp->attr.max_rdma_read_qp_depth) || + (conn_param->ird > qp->rhp->attr.max_rdma_reads_per_qp)) { + abort_connection(ep, NULL, GFP_KERNEL); + return -EINVAL; + } + + cm_id->add_ref(cm_id); + ep->com.cm_id = cm_id; + ep->com.qp = qp; + + ep->com.rpl_done = 0; + ep->com.rpl_err = 0; + ep->ird = conn_param->ird; + ep->ord = conn_param->ord; + PDBG("%s %d ird %d ord %d\n", __FUNCTION__, __LINE__, ep->ird, ep->ord); + get_ep(&ep->com); + err = send_mpa_reply(ep, conn_param->private_data, + conn_param->private_data_len); + if (err) { + ep->com.cm_id = NULL; + ep->com.qp = NULL; + cm_id->rem_ref(cm_id); + abort_connection(ep, NULL, GFP_KERNEL); + put_ep(&ep->com); + return err; + } + + /* bind QP to EP and move to RTS */ + attrs.mpa_attr = ep->mpa_attr; + attrs.max_ird = ep->ord; + attrs.max_ord = ep->ord; + attrs.llp_stream_handle = ep; + attrs.next_state = IWCH_QP_STATE_RTS; + + /* bind QP and TID with INIT_WR */ + mask = IWCH_QP_ATTR_NEXT_STATE | + IWCH_QP_ATTR_LLP_STREAM_HANDLE | + IWCH_QP_ATTR_MPA_ATTR | + IWCH_QP_ATTR_MAX_IRD | + IWCH_QP_ATTR_MAX_ORD; + + err = iwch_modify_qp(ep->com.qp->rhp, + ep->com.qp, mask, &attrs, 1); + + if (err) { + ep->com.cm_id = NULL; + ep->com.qp = NULL; + cm_id->rem_ref(cm_id); + abort_connection(ep, NULL, GFP_KERNEL); + } else { + state_set(&ep->com, FPDU_MODE); + established_upcall(ep); + } + put_ep(&ep->com); + return err; +} + +int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) +{ + int err = 0; + struct iwch_dev *h = to_iwch_dev(cm_id->device); + struct iwch_ep *ep; + struct rtable *rt; + + ep = alloc_ep(sizeof(*ep), GFP_KERNEL); + if (!ep) { + printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __FUNCTION__); + err = -ENOMEM; + goto out; + } + init_timer(&ep->timer); + ep->plen = conn_param->private_data_len; + if (ep->plen) + memcpy(ep->mpa_pkt + sizeof(struct mpa_message), + conn_param->private_data, ep->plen); + ep->ird = conn_param->ird; + ep->ord = conn_param->ord; + ep->com.tdev = h->rdev.t3cdev_p; + + cm_id->add_ref(cm_id); + ep->com.cm_id = cm_id; + ep->com.qp = get_qhp(h, conn_param->qpn); + BUG_ON(!ep->com.qp); + PDBG("%s qpn 0x%x qp %p cm_id %p\n", __FUNCTION__, conn_param->qpn, + ep->com.qp, cm_id); + + /* + * Allocate an active TID to initiate a TCP connection. + */ + ep->atid = cxgb3_alloc_atid(h->rdev.t3cdev_p, &t3c_client, ep); + if (ep->atid == -1) { + printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __FUNCTION__); + err = -ENOMEM; + goto fail2; + } + + /* find a route */ + rt = find_route(h->rdev.t3cdev_p, + 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, IPTOS_LOWDELAY); + if (!rt) { + printk(KERN_ERR MOD "%s - cannot find route.\n", __FUNCTION__); + err = -EHOSTUNREACH; + goto fail3; + } + ep->dst = &rt->u.dst; + + /* get a l2t entry */ + ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour, + ep->dst->neighbour->dev); + if (!ep->l2t) { + printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __FUNCTION__); + err = -ENOMEM; + goto fail4; + } + + state_set(&ep->com, CONNECTING); + ep->tos = IPTOS_LOWDELAY; + ep->com.local_addr = cm_id->local_addr; + ep->com.remote_addr = cm_id->remote_addr; + + /* send connect request to rnic */ + err = send_connect(ep); + if (!err) + goto out; + + l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t); +fail4: + dst_release(ep->dst); +fail3: + cxgb3_free_atid(ep->com.tdev, ep->atid); +fail2: + put_ep(&ep->com); +out: + return err; +} + +int iwch_create_listen(struct iw_cm_id *cm_id, int backlog) +{ + int err = 0; + struct iwch_dev *h = to_iwch_dev(cm_id->device); + struct iwch_listen_ep *ep; + + + might_sleep(); + + ep = alloc_ep(sizeof(*ep), GFP_KERNEL); + if (!ep) { + printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __FUNCTION__); + err = -ENOMEM; + goto fail1; + } + PDBG("%s ep %p\n", __FUNCTION__, ep); + ep->com.tdev = h->rdev.t3cdev_p; + cm_id->add_ref(cm_id); + ep->com.cm_id = cm_id; + ep->backlog = backlog; + ep->com.local_addr = cm_id->local_addr; + + /* + * Allocate a server TID. + */ + ep->stid = cxgb3_alloc_stid(h->rdev.t3cdev_p, &t3c_client, ep); + if (ep->stid == -1) { + printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __FUNCTION__); + err = -ENOMEM; + goto fail2; + } + + state_set(&ep->com, LISTEN); + err = listen_start(ep); + if (err) + goto fail3; + + /* wait for pass_open_rpl */ + wait_event(ep->com.waitq, ep->com.rpl_done); + err = ep->com.rpl_err; + if (!err) { + cm_id->provider_data = ep; + goto out; + } +fail3: + cxgb3_free_stid(ep->com.tdev, ep->stid); +fail2: + put_ep(&ep->com); +fail1: +out: + return err; +} + +int iwch_destroy_listen(struct iw_cm_id *cm_id) +{ + int err; + struct iwch_listen_ep *ep = to_listen_ep(cm_id); + + PDBG("%s ep %p\n", __FUNCTION__, ep); + + might_sleep(); + state_set(&ep->com, DEAD); + ep->com.rpl_done = 0; + ep->com.rpl_err = 0; + err = listen_stop(ep); + wait_event(ep->com.waitq, ep->com.rpl_done); + cxgb3_free_stid(ep->com.tdev, ep->stid); + err = ep->com.rpl_err; + cm_id->rem_ref(cm_id); + put_ep(&ep->com); + return err; +} + +int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp) +{ + int ret=0; + unsigned long flags; + int close = 0; + + spin_lock_irqsave(&ep->com.lock, flags); + + PDBG("%s ep %p state %s, abrupt %d\n", __FUNCTION__, ep, + states[ep->com.state], abrupt); + + if (ep->com.state == DEAD) { + PDBG("%s already dead ep %p\n", __FUNCTION__, ep); + goto out; + } + + if (abrupt) { + if (ep->com.state != ABORTING) { + ep->com.state = ABORTING; + close = 1; + } + goto out; + } + + switch (ep->com.state) { + case MPA_REQ_WAIT: + case MPA_REQ_SENT: + case MPA_REQ_RCVD: + case MPA_REP_SENT: + case FPDU_MODE: + ep->com.state = CLOSING; + close = 1; + break; + case CLOSING: + start_ep_timer(ep); + ep->com.state = MORIBUND; + close = 1; + break; + case MORIBUND: + break; + default: + BUG(); + break; + } +out: + spin_unlock_irqrestore(&ep->com.lock, flags); + if (close) { + if (abrupt) + ret = send_abort(ep, NULL, gfp); + else + ret = send_halfclose(ep, gfp); + } + return ret; +} + +int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, + struct l2t_entry *l2t) +{ + struct iwch_ep *ep = ctx; + + if (ep->dst != old) + return 0; + + PDBG("%s ep %p redirect to dst %p l2t %p\n", __FUNCTION__, ep, new, + l2t); + dst_hold(new); + l2t_release(L2DATA(ep->com.tdev), ep->l2t); + ep->l2t = l2t; + dst_release(old); + ep->dst = new; + return 1; +} + +/* + * All the CM events are handled on a work queue to have a safe context. + */ +static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) +{ + struct iwch_ep_common *epc = ctx; + + get_ep(epc); + + /* + * Save ctx and tdev in the skb->cb area. + */ + *((void **) skb->cb) = ctx; + *((struct t3cdev **) (skb->cb + sizeof(void *))) = tdev; + + /* + * Queue the skb and schedule the worker thread. + */ + skb_queue_tail(&rxq, skb); + queue_work(workq, &skb_work); + return 0; +} + +int __init iwch_cm_init(void) +{ + skb_queue_head_init(&rxq); + + workq = create_singlethread_workqueue("iw_cxgb3"); + if (!workq) + return -ENOMEM; + + /* + * All upcalls from the T3 Core go to sched() to + * schedule the processing on a work queue. + */ + t3c_handlers[CPL_ACT_ESTABLISH] = sched; + t3c_handlers[CPL_ACT_OPEN_RPL] = sched; + t3c_handlers[CPL_RX_DATA] = sched; + t3c_handlers[CPL_TX_DMA_ACK] = sched; + t3c_handlers[CPL_ABORT_RPL_RSS] = sched; + t3c_handlers[CPL_ABORT_RPL] = sched; + t3c_handlers[CPL_PASS_OPEN_RPL] = sched; + t3c_handlers[CPL_CLOSE_LISTSRV_RPL] = sched; + t3c_handlers[CPL_PASS_ACCEPT_REQ] = sched; + t3c_handlers[CPL_PASS_ESTABLISH] = sched; + t3c_handlers[CPL_PEER_CLOSE] = sched; + t3c_handlers[CPL_CLOSE_CON_RPL] = sched; + t3c_handlers[CPL_ABORT_REQ_RSS] = sched; + t3c_handlers[CPL_RDMA_TERMINATE] = sched; + t3c_handlers[CPL_RDMA_EC_STATUS] = sched; + + /* + * These are the real handlers that are called from a + * work queue. + */ + work_handlers[CPL_ACT_ESTABLISH] = act_establish; + work_handlers[CPL_ACT_OPEN_RPL] = act_open_rpl; + work_handlers[CPL_RX_DATA] = rx_data; + work_handlers[CPL_TX_DMA_ACK] = tx_ack; + work_handlers[CPL_ABORT_RPL_RSS] = abort_rpl; + work_handlers[CPL_ABORT_RPL] = abort_rpl; + work_handlers[CPL_PASS_OPEN_RPL] = pass_open_rpl; + work_handlers[CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl; + work_handlers[CPL_PASS_ACCEPT_REQ] = pass_accept_req; + work_handlers[CPL_PASS_ESTABLISH] = pass_establish; + work_handlers[CPL_PEER_CLOSE] = peer_close; + work_handlers[CPL_ABORT_REQ_RSS] = peer_abort; + work_handlers[CPL_CLOSE_CON_RPL] = close_con_rpl; + work_handlers[CPL_RDMA_TERMINATE] = terminate; + work_handlers[CPL_RDMA_EC_STATUS] = ec_status; + return 0; +} + +void __exit iwch_cm_term(void) +{ + flush_workqueue(workq); + destroy_workqueue(workq); +} |