diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c | 1402 |
1 files changed, 1402 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c new file mode 100644 index 000000000..89256b866 --- /dev/null +++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c @@ -0,0 +1,1402 @@ +/* + * Copyright (c) 2006-2008 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. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/list.h> +#include <linux/slab.h> +#include <net/neighbour.h> +#include <linux/notifier.h> +#include <linux/atomic.h> +#include <linux/proc_fs.h> +#include <linux/if_vlan.h> +#include <net/netevent.h> +#include <linux/highmem.h> +#include <linux/vmalloc.h> +#include <linux/export.h> + +#include "common.h" +#include "regs.h" +#include "cxgb3_ioctl.h" +#include "cxgb3_ctl_defs.h" +#include "cxgb3_defs.h" +#include "l2t.h" +#include "firmware_exports.h" +#include "cxgb3_offload.h" + +static LIST_HEAD(client_list); +static LIST_HEAD(ofld_dev_list); +static DEFINE_MUTEX(cxgb3_db_lock); + +static DEFINE_RWLOCK(adapter_list_lock); +static LIST_HEAD(adapter_list); + +static const unsigned int MAX_ATIDS = 64 * 1024; +static const unsigned int ATID_BASE = 0x10000; + +static void cxgb_neigh_update(struct neighbour *neigh); +static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new, + struct neighbour *neigh, const void *daddr); + +static inline int offload_activated(struct t3cdev *tdev) +{ + const struct adapter *adapter = tdev2adap(tdev); + + return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); +} + +/** + * cxgb3_register_client - register an offload client + * @client: the client + * + * Add the client to the client list, + * and call backs the client for each activated offload device + */ +void cxgb3_register_client(struct cxgb3_client *client) +{ + struct t3cdev *tdev; + + mutex_lock(&cxgb3_db_lock); + list_add_tail(&client->client_list, &client_list); + + if (client->add) { + list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) { + if (offload_activated(tdev)) + client->add(tdev); + } + } + mutex_unlock(&cxgb3_db_lock); +} + +EXPORT_SYMBOL(cxgb3_register_client); + +/** + * cxgb3_unregister_client - unregister an offload client + * @client: the client + * + * Remove the client to the client list, + * and call backs the client for each activated offload device. + */ +void cxgb3_unregister_client(struct cxgb3_client *client) +{ + struct t3cdev *tdev; + + mutex_lock(&cxgb3_db_lock); + list_del(&client->client_list); + + if (client->remove) { + list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) { + if (offload_activated(tdev)) + client->remove(tdev); + } + } + mutex_unlock(&cxgb3_db_lock); +} + +EXPORT_SYMBOL(cxgb3_unregister_client); + +/** + * cxgb3_add_clients - activate registered clients for an offload device + * @tdev: the offload device + * + * Call backs all registered clients once a offload device is activated + */ +void cxgb3_add_clients(struct t3cdev *tdev) +{ + struct cxgb3_client *client; + + mutex_lock(&cxgb3_db_lock); + list_for_each_entry(client, &client_list, client_list) { + if (client->add) + client->add(tdev); + } + mutex_unlock(&cxgb3_db_lock); +} + +/** + * cxgb3_remove_clients - deactivates registered clients + * for an offload device + * @tdev: the offload device + * + * Call backs all registered clients once a offload device is deactivated + */ +void cxgb3_remove_clients(struct t3cdev *tdev) +{ + struct cxgb3_client *client; + + mutex_lock(&cxgb3_db_lock); + list_for_each_entry(client, &client_list, client_list) { + if (client->remove) + client->remove(tdev); + } + mutex_unlock(&cxgb3_db_lock); +} + +void cxgb3_event_notify(struct t3cdev *tdev, u32 event, u32 port) +{ + struct cxgb3_client *client; + + mutex_lock(&cxgb3_db_lock); + list_for_each_entry(client, &client_list, client_list) { + if (client->event_handler) + client->event_handler(tdev, event, port); + } + mutex_unlock(&cxgb3_db_lock); +} + +static struct net_device *get_iff_from_mac(struct adapter *adapter, + const unsigned char *mac, + unsigned int vlan) +{ + int i; + + for_each_port(adapter, i) { + struct net_device *dev = adapter->port[i]; + + if (ether_addr_equal(dev->dev_addr, mac)) { + rcu_read_lock(); + if (vlan && vlan != VLAN_VID_MASK) { + dev = __vlan_find_dev_deep_rcu(dev, htons(ETH_P_8021Q), vlan); + } else if (netif_is_bond_slave(dev)) { + struct net_device *upper_dev; + + while ((upper_dev = + netdev_master_upper_dev_get_rcu(dev))) + dev = upper_dev; + } + rcu_read_unlock(); + return dev; + } + } + return NULL; +} + +static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req, + void *data) +{ + int i; + int ret = 0; + unsigned int val = 0; + struct ulp_iscsi_info *uiip = data; + + switch (req) { + case ULP_ISCSI_GET_PARAMS: + uiip->pdev = adapter->pdev; + uiip->llimit = t3_read_reg(adapter, A_ULPRX_ISCSI_LLIMIT); + uiip->ulimit = t3_read_reg(adapter, A_ULPRX_ISCSI_ULIMIT); + uiip->tagmask = t3_read_reg(adapter, A_ULPRX_ISCSI_TAGMASK); + + val = t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ); + for (i = 0; i < 4; i++, val >>= 8) + uiip->pgsz_factor[i] = val & 0xFF; + + val = t3_read_reg(adapter, A_TP_PARA_REG7); + uiip->max_txsz = + uiip->max_rxsz = min((val >> S_PMMAXXFERLEN0)&M_PMMAXXFERLEN0, + (val >> S_PMMAXXFERLEN1)&M_PMMAXXFERLEN1); + /* + * On tx, the iscsi pdu has to be <= tx page size and has to + * fit into the Tx PM FIFO. + */ + val = min(adapter->params.tp.tx_pg_size, + t3_read_reg(adapter, A_PM1_TX_CFG) >> 17); + uiip->max_txsz = min(val, uiip->max_txsz); + + /* set MaxRxData to 16224 */ + val = t3_read_reg(adapter, A_TP_PARA_REG2); + if ((val >> S_MAXRXDATA) != 0x3f60) { + val &= (M_RXCOALESCESIZE << S_RXCOALESCESIZE); + val |= V_MAXRXDATA(0x3f60); + pr_info("%s, iscsi set MaxRxData to 16224 (0x%x)\n", + adapter->name, val); + t3_write_reg(adapter, A_TP_PARA_REG2, val); + } + + /* + * on rx, the iscsi pdu has to be < rx page size and the + * max rx data length programmed in TP + */ + val = min(adapter->params.tp.rx_pg_size, + ((t3_read_reg(adapter, A_TP_PARA_REG2)) >> + S_MAXRXDATA) & M_MAXRXDATA); + uiip->max_rxsz = min(val, uiip->max_rxsz); + break; + case ULP_ISCSI_SET_PARAMS: + t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask); + /* program the ddp page sizes */ + for (i = 0; i < 4; i++) + val |= (uiip->pgsz_factor[i] & 0xF) << (8 * i); + if (val && (val != t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ))) { + pr_info("%s, setting iscsi pgsz 0x%x, %u,%u,%u,%u\n", + adapter->name, val, uiip->pgsz_factor[0], + uiip->pgsz_factor[1], uiip->pgsz_factor[2], + uiip->pgsz_factor[3]); + t3_write_reg(adapter, A_ULPRX_ISCSI_PSZ, val); + } + break; + default: + ret = -EOPNOTSUPP; + } + return ret; +} + +/* Response queue used for RDMA events. */ +#define ASYNC_NOTIF_RSPQ 0 + +static int cxgb_rdma_ctl(struct adapter *adapter, unsigned int req, void *data) +{ + int ret = 0; + + switch (req) { + case RDMA_GET_PARAMS: { + struct rdma_info *rdma = data; + struct pci_dev *pdev = adapter->pdev; + + rdma->udbell_physbase = pci_resource_start(pdev, 2); + rdma->udbell_len = pci_resource_len(pdev, 2); + rdma->tpt_base = + t3_read_reg(adapter, A_ULPTX_TPT_LLIMIT); + rdma->tpt_top = t3_read_reg(adapter, A_ULPTX_TPT_ULIMIT); + rdma->pbl_base = + t3_read_reg(adapter, A_ULPTX_PBL_LLIMIT); + rdma->pbl_top = t3_read_reg(adapter, A_ULPTX_PBL_ULIMIT); + rdma->rqt_base = t3_read_reg(adapter, A_ULPRX_RQ_LLIMIT); + rdma->rqt_top = t3_read_reg(adapter, A_ULPRX_RQ_ULIMIT); + rdma->kdb_addr = adapter->regs + A_SG_KDOORBELL; + rdma->pdev = pdev; + break; + } + case RDMA_CQ_OP:{ + unsigned long flags; + struct rdma_cq_op *rdma = data; + + /* may be called in any context */ + spin_lock_irqsave(&adapter->sge.reg_lock, flags); + ret = t3_sge_cqcntxt_op(adapter, rdma->id, rdma->op, + rdma->credits); + spin_unlock_irqrestore(&adapter->sge.reg_lock, flags); + break; + } + case RDMA_GET_MEM:{ + struct ch_mem_range *t = data; + struct mc7 *mem; + + if ((t->addr & 7) || (t->len & 7)) + return -EINVAL; + if (t->mem_id == MEM_CM) + mem = &adapter->cm; + else if (t->mem_id == MEM_PMRX) + mem = &adapter->pmrx; + else if (t->mem_id == MEM_PMTX) + mem = &adapter->pmtx; + else + return -EINVAL; + + ret = + t3_mc7_bd_read(mem, t->addr / 8, t->len / 8, + (u64 *) t->buf); + if (ret) + return ret; + break; + } + case RDMA_CQ_SETUP:{ + struct rdma_cq_setup *rdma = data; + + spin_lock_irq(&adapter->sge.reg_lock); + ret = + t3_sge_init_cqcntxt(adapter, rdma->id, + rdma->base_addr, rdma->size, + ASYNC_NOTIF_RSPQ, + rdma->ovfl_mode, rdma->credits, + rdma->credit_thres); + spin_unlock_irq(&adapter->sge.reg_lock); + break; + } + case RDMA_CQ_DISABLE: + spin_lock_irq(&adapter->sge.reg_lock); + ret = t3_sge_disable_cqcntxt(adapter, *(unsigned int *)data); + spin_unlock_irq(&adapter->sge.reg_lock); + break; + case RDMA_CTRL_QP_SETUP:{ + struct rdma_ctrlqp_setup *rdma = data; + + spin_lock_irq(&adapter->sge.reg_lock); + ret = t3_sge_init_ecntxt(adapter, FW_RI_SGEEC_START, 0, + SGE_CNTXT_RDMA, + ASYNC_NOTIF_RSPQ, + rdma->base_addr, rdma->size, + FW_RI_TID_START, 1, 0); + spin_unlock_irq(&adapter->sge.reg_lock); + break; + } + case RDMA_GET_MIB: { + spin_lock(&adapter->stats_lock); + t3_tp_get_mib_stats(adapter, (struct tp_mib_stats *)data); + spin_unlock(&adapter->stats_lock); + break; + } + default: + ret = -EOPNOTSUPP; + } + return ret; +} + +static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data) +{ + struct adapter *adapter = tdev2adap(tdev); + struct tid_range *tid; + struct mtutab *mtup; + struct iff_mac *iffmacp; + struct ddp_params *ddpp; + struct adap_ports *ports; + struct ofld_page_info *rx_page_info; + struct tp_params *tp = &adapter->params.tp; + int i; + + switch (req) { + case GET_MAX_OUTSTANDING_WR: + *(unsigned int *)data = FW_WR_NUM; + break; + case GET_WR_LEN: + *(unsigned int *)data = WR_FLITS; + break; + case GET_TX_MAX_CHUNK: + *(unsigned int *)data = 1 << 20; /* 1MB */ + break; + case GET_TID_RANGE: + tid = data; + tid->num = t3_mc5_size(&adapter->mc5) - + adapter->params.mc5.nroutes - + adapter->params.mc5.nfilters - adapter->params.mc5.nservers; + tid->base = 0; + break; + case GET_STID_RANGE: + tid = data; + tid->num = adapter->params.mc5.nservers; + tid->base = t3_mc5_size(&adapter->mc5) - tid->num - + adapter->params.mc5.nfilters - adapter->params.mc5.nroutes; + break; + case GET_L2T_CAPACITY: + *(unsigned int *)data = 2048; + break; + case GET_MTUS: + mtup = data; + mtup->size = NMTUS; + mtup->mtus = adapter->params.mtus; + break; + case GET_IFF_FROM_MAC: + iffmacp = data; + iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr, + iffmacp->vlan_tag & + VLAN_VID_MASK); + break; + case GET_DDP_PARAMS: + ddpp = data; + ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT); + ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT); + ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK); + break; + case GET_PORTS: + ports = data; + ports->nports = adapter->params.nports; + for_each_port(adapter, i) + ports->lldevs[i] = adapter->port[i]; + break; + case ULP_ISCSI_GET_PARAMS: + case ULP_ISCSI_SET_PARAMS: + if (!offload_running(adapter)) + return -EAGAIN; + return cxgb_ulp_iscsi_ctl(adapter, req, data); + case RDMA_GET_PARAMS: + case RDMA_CQ_OP: + case RDMA_CQ_SETUP: + case RDMA_CQ_DISABLE: + case RDMA_CTRL_QP_SETUP: + case RDMA_GET_MEM: + case RDMA_GET_MIB: + if (!offload_running(adapter)) + return -EAGAIN; + return cxgb_rdma_ctl(adapter, req, data); + case GET_RX_PAGE_INFO: + rx_page_info = data; + rx_page_info->page_size = tp->rx_pg_size; + rx_page_info->num = tp->rx_num_pgs; + break; + case GET_ISCSI_IPV4ADDR: { + struct iscsi_ipv4addr *p = data; + struct port_info *pi = netdev_priv(p->dev); + p->ipv4addr = pi->iscsi_ipv4addr; + break; + } + case GET_EMBEDDED_INFO: { + struct ch_embedded_info *e = data; + + spin_lock(&adapter->stats_lock); + t3_get_fw_version(adapter, &e->fw_vers); + t3_get_tp_version(adapter, &e->tp_vers); + spin_unlock(&adapter->stats_lock); + break; + } + default: + return -EOPNOTSUPP; + } + return 0; +} + +/* + * Dummy handler for Rx offload packets in case we get an offload packet before + * proper processing is setup. This complains and drops the packet as it isn't + * normal to get offload packets at this stage. + */ +static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs, + int n) +{ + while (n--) + dev_kfree_skb_any(skbs[n]); + return 0; +} + +static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh) +{ +} + +void cxgb3_set_dummy_ops(struct t3cdev *dev) +{ + dev->recv = rx_offload_blackhole; + dev->neigh_update = dummy_neigh_update; +} + +/* + * Free an active-open TID. + */ +void *cxgb3_free_atid(struct t3cdev *tdev, int atid) +{ + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + union active_open_entry *p = atid2entry(t, atid); + void *ctx = p->t3c_tid.ctx; + + spin_lock_bh(&t->atid_lock); + p->next = t->afree; + t->afree = p; + t->atids_in_use--; + spin_unlock_bh(&t->atid_lock); + + return ctx; +} + +EXPORT_SYMBOL(cxgb3_free_atid); + +/* + * Free a server TID and return it to the free pool. + */ +void cxgb3_free_stid(struct t3cdev *tdev, int stid) +{ + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + union listen_entry *p = stid2entry(t, stid); + + spin_lock_bh(&t->stid_lock); + p->next = t->sfree; + t->sfree = p; + t->stids_in_use--; + spin_unlock_bh(&t->stid_lock); +} + +EXPORT_SYMBOL(cxgb3_free_stid); + +void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client, + void *ctx, unsigned int tid) +{ + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + + t->tid_tab[tid].client = client; + t->tid_tab[tid].ctx = ctx; + atomic_inc(&t->tids_in_use); +} + +EXPORT_SYMBOL(cxgb3_insert_tid); + +/* + * Populate a TID_RELEASE WR. The skb must be already propely sized. + */ +static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid) +{ + struct cpl_tid_release *req; + + skb->priority = CPL_PRIORITY_SETUP; + 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_TID_RELEASE, tid)); +} + +static void t3_process_tid_release_list(struct work_struct *work) +{ + struct t3c_data *td = container_of(work, struct t3c_data, + tid_release_task); + struct sk_buff *skb; + struct t3cdev *tdev = td->dev; + + + spin_lock_bh(&td->tid_release_lock); + while (td->tid_release_list) { + struct t3c_tid_entry *p = td->tid_release_list; + + td->tid_release_list = p->ctx; + spin_unlock_bh(&td->tid_release_lock); + + skb = alloc_skb(sizeof(struct cpl_tid_release), + GFP_KERNEL); + if (!skb) + skb = td->nofail_skb; + if (!skb) { + spin_lock_bh(&td->tid_release_lock); + p->ctx = (void *)td->tid_release_list; + td->tid_release_list = p; + break; + } + mk_tid_release(skb, p - td->tid_maps.tid_tab); + cxgb3_ofld_send(tdev, skb); + p->ctx = NULL; + if (skb == td->nofail_skb) + td->nofail_skb = + alloc_skb(sizeof(struct cpl_tid_release), + GFP_KERNEL); + spin_lock_bh(&td->tid_release_lock); + } + td->release_list_incomplete = (td->tid_release_list == NULL) ? 0 : 1; + spin_unlock_bh(&td->tid_release_lock); + + if (!td->nofail_skb) + td->nofail_skb = + alloc_skb(sizeof(struct cpl_tid_release), + GFP_KERNEL); +} + +/* use ctx as a next pointer in the tid release list */ +void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid) +{ + struct t3c_data *td = T3C_DATA(tdev); + struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid]; + + spin_lock_bh(&td->tid_release_lock); + p->ctx = (void *)td->tid_release_list; + p->client = NULL; + td->tid_release_list = p; + if (!p->ctx || td->release_list_incomplete) + schedule_work(&td->tid_release_task); + spin_unlock_bh(&td->tid_release_lock); +} + +EXPORT_SYMBOL(cxgb3_queue_tid_release); + +/* + * Remove a tid from the TID table. A client may defer processing its last + * CPL message if it is locked at the time it arrives, and while the message + * sits in the client's backlog the TID may be reused for another connection. + * To handle this we atomically switch the TID association if it still points + * to the original client context. + */ +void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid) +{ + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + + BUG_ON(tid >= t->ntids); + if (tdev->type == T3A) + (void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL); + else { + struct sk_buff *skb; + + skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC); + if (likely(skb)) { + mk_tid_release(skb, tid); + cxgb3_ofld_send(tdev, skb); + t->tid_tab[tid].ctx = NULL; + } else + cxgb3_queue_tid_release(tdev, tid); + } + atomic_dec(&t->tids_in_use); +} + +EXPORT_SYMBOL(cxgb3_remove_tid); + +int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client, + void *ctx) +{ + int atid = -1; + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + + spin_lock_bh(&t->atid_lock); + if (t->afree && + t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <= + t->ntids) { + union active_open_entry *p = t->afree; + + atid = (p - t->atid_tab) + t->atid_base; + t->afree = p->next; + p->t3c_tid.ctx = ctx; + p->t3c_tid.client = client; + t->atids_in_use++; + } + spin_unlock_bh(&t->atid_lock); + return atid; +} + +EXPORT_SYMBOL(cxgb3_alloc_atid); + +int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client, + void *ctx) +{ + int stid = -1; + struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; + + spin_lock_bh(&t->stid_lock); + if (t->sfree) { + union listen_entry *p = t->sfree; + + stid = (p - t->stid_tab) + t->stid_base; + t->sfree = p->next; + p->t3c_tid.ctx = ctx; + p->t3c_tid.client = client; + t->stids_in_use++; + } + spin_unlock_bh(&t->stid_lock); + return stid; +} + +EXPORT_SYMBOL(cxgb3_alloc_stid); + +/* Get the t3cdev associated with a net_device */ +struct t3cdev *dev2t3cdev(struct net_device *dev) +{ + const struct port_info *pi = netdev_priv(dev); + + return (struct t3cdev *)pi->adapter; +} + +EXPORT_SYMBOL(dev2t3cdev); + +static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_smt_write_rpl *rpl = cplhdr(skb); + + if (rpl->status != CPL_ERR_NONE) + pr_err("Unexpected SMT_WRITE_RPL status %u for entry %u\n", + rpl->status, GET_TID(rpl)); + + return CPL_RET_BUF_DONE; +} + +static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_l2t_write_rpl *rpl = cplhdr(skb); + + if (rpl->status != CPL_ERR_NONE) + pr_err("Unexpected L2T_WRITE_RPL status %u for entry %u\n", + rpl->status, GET_TID(rpl)); + + return CPL_RET_BUF_DONE; +} + +static int do_rte_write_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_rte_write_rpl *rpl = cplhdr(skb); + + if (rpl->status != CPL_ERR_NONE) + pr_err("Unexpected RTE_WRITE_RPL status %u for entry %u\n", + rpl->status, GET_TID(rpl)); + + return CPL_RET_BUF_DONE; +} + +static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_act_open_rpl *rpl = cplhdr(skb); + unsigned int atid = G_TID(ntohl(rpl->atid)); + struct t3c_tid_entry *t3c_tid; + + t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client && + t3c_tid->client->handlers && + t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) { + return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb, + t3c_tid-> + ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, CPL_ACT_OPEN_RPL); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + union opcode_tid *p = cplhdr(skb); + unsigned int stid = G_TID(ntohl(p->opcode_tid)); + struct t3c_tid_entry *t3c_tid; + + t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[p->opcode]) { + return t3c_tid->client->handlers[p->opcode] (dev, skb, + t3c_tid->ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, p->opcode); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb) +{ + union opcode_tid *p = cplhdr(skb); + unsigned int hwtid = G_TID(ntohl(p->opcode_tid)); + struct t3c_tid_entry *t3c_tid; + + t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[p->opcode]) { + return t3c_tid->client->handlers[p->opcode] + (dev, skb, t3c_tid->ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, p->opcode); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +static int do_cr(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_pass_accept_req *req = cplhdr(skb); + unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid)); + struct tid_info *t = &(T3C_DATA(dev))->tid_maps; + struct t3c_tid_entry *t3c_tid; + unsigned int tid = GET_TID(req); + + if (unlikely(tid >= t->ntids)) { + printk("%s: passive open TID %u too large\n", + dev->name, tid); + t3_fatal_err(tdev2adap(dev)); + return CPL_RET_BUF_DONE; + } + + t3c_tid = lookup_stid(t, stid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) { + return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ] + (dev, skb, t3c_tid->ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, CPL_PASS_ACCEPT_REQ); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +/* + * Returns an sk_buff for a reply CPL message of size len. If the input + * sk_buff has no other users it is trimmed and reused, otherwise a new buffer + * is allocated. The input skb must be of size at least len. Note that this + * operation does not destroy the original skb data even if it decides to reuse + * the buffer. + */ +static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len, + gfp_t gfp) +{ + if (likely(!skb_cloned(skb))) { + BUG_ON(skb->len < len); + __skb_trim(skb, len); + skb_get(skb); + } else { + skb = alloc_skb(len, gfp); + if (skb) + __skb_put(skb, len); + } + return skb; +} + +static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb) +{ + union opcode_tid *p = cplhdr(skb); + unsigned int hwtid = G_TID(ntohl(p->opcode_tid)); + struct t3c_tid_entry *t3c_tid; + + t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[p->opcode]) { + return t3c_tid->client->handlers[p->opcode] + (dev, skb, t3c_tid->ctx); + } else { + struct cpl_abort_req_rss *req = cplhdr(skb); + struct cpl_abort_rpl *rpl; + struct sk_buff *reply_skb; + unsigned int tid = GET_TID(req); + u8 cmd = req->status; + + if (req->status == CPL_ERR_RTX_NEG_ADVICE || + req->status == CPL_ERR_PERSIST_NEG_ADVICE) + goto out; + + reply_skb = cxgb3_get_cpl_reply_skb(skb, + sizeof(struct + cpl_abort_rpl), + GFP_ATOMIC); + + if (!reply_skb) { + printk("do_abort_req_rss: couldn't get skb!\n"); + goto out; + } + reply_skb->priority = CPL_PRIORITY_DATA; + __skb_put(reply_skb, sizeof(struct cpl_abort_rpl)); + rpl = cplhdr(reply_skb); + rpl->wr.wr_hi = + htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); + rpl->wr.wr_lo = htonl(V_WR_TID(tid)); + OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid)); + rpl->cmd = cmd; + cxgb3_ofld_send(dev, reply_skb); +out: + return CPL_RET_BUF_DONE; + } +} + +static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_act_establish *req = cplhdr(skb); + unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid)); + struct tid_info *t = &(T3C_DATA(dev))->tid_maps; + struct t3c_tid_entry *t3c_tid; + unsigned int tid = GET_TID(req); + + if (unlikely(tid >= t->ntids)) { + printk("%s: active establish TID %u too large\n", + dev->name, tid); + t3_fatal_err(tdev2adap(dev)); + return CPL_RET_BUF_DONE; + } + + t3c_tid = lookup_atid(t, atid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) { + return t3c_tid->client->handlers[CPL_ACT_ESTABLISH] + (dev, skb, t3c_tid->ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, CPL_ACT_ESTABLISH); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +static int do_trace(struct t3cdev *dev, struct sk_buff *skb) +{ + struct cpl_trace_pkt *p = cplhdr(skb); + + skb->protocol = htons(0xffff); + skb->dev = dev->lldev; + skb_pull(skb, sizeof(*p)); + skb_reset_mac_header(skb); + netif_receive_skb(skb); + return 0; +} + +/* + * That skb would better have come from process_responses() where we abuse + * ->priority and ->csum to carry our data. NB: if we get to per-arch + * ->csum, the things might get really interesting here. + */ + +static inline u32 get_hwtid(struct sk_buff *skb) +{ + return ntohl((__force __be32)skb->priority) >> 8 & 0xfffff; +} + +static inline u32 get_opcode(struct sk_buff *skb) +{ + return G_OPCODE(ntohl((__force __be32)skb->csum)); +} + +static int do_term(struct t3cdev *dev, struct sk_buff *skb) +{ + unsigned int hwtid = get_hwtid(skb); + unsigned int opcode = get_opcode(skb); + struct t3c_tid_entry *t3c_tid; + + t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); + if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && + t3c_tid->client->handlers[opcode]) { + return t3c_tid->client->handlers[opcode] (dev, skb, + t3c_tid->ctx); + } else { + pr_err("%s: received clientless CPL command 0x%x\n", + dev->name, opcode); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; + } +} + +static int nb_callback(struct notifier_block *self, unsigned long event, + void *ctx) +{ + switch (event) { + case (NETEVENT_NEIGH_UPDATE):{ + cxgb_neigh_update((struct neighbour *)ctx); + break; + } + case (NETEVENT_REDIRECT):{ + struct netevent_redirect *nr = ctx; + cxgb_redirect(nr->old, nr->new, nr->neigh, + nr->daddr); + cxgb_neigh_update(nr->neigh); + break; + } + default: + break; + } + return 0; +} + +static struct notifier_block nb = { + .notifier_call = nb_callback +}; + +/* + * Process a received packet with an unknown/unexpected CPL opcode. + */ +static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb) +{ + pr_err("%s: received bad CPL command 0x%x\n", dev->name, *skb->data); + return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; +} + +/* + * Handlers for each CPL opcode + */ +static cpl_handler_func cpl_handlers[NUM_CPL_CMDS]; + +/* + * Add a new handler to the CPL dispatch table. A NULL handler may be supplied + * to unregister an existing handler. + */ +void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h) +{ + if (opcode < NUM_CPL_CMDS) + cpl_handlers[opcode] = h ? h : do_bad_cpl; + else + pr_err("T3C: handler registration for opcode %x failed\n", + opcode); +} + +EXPORT_SYMBOL(t3_register_cpl_handler); + +/* + * T3CDEV's receive method. + */ +static int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n) +{ + while (n--) { + struct sk_buff *skb = *skbs++; + unsigned int opcode = get_opcode(skb); + int ret = cpl_handlers[opcode] (dev, skb); + +#if VALIDATE_TID + if (ret & CPL_RET_UNKNOWN_TID) { + union opcode_tid *p = cplhdr(skb); + + pr_err("%s: CPL message (opcode %u) had unknown TID %u\n", + dev->name, opcode, G_TID(ntohl(p->opcode_tid))); + } +#endif + if (ret & CPL_RET_BUF_DONE) + kfree_skb(skb); + } + return 0; +} + +/* + * Sends an sk_buff to a T3C driver after dealing with any active network taps. + */ +int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb) +{ + int r; + + local_bh_disable(); + r = dev->send(dev, skb); + local_bh_enable(); + return r; +} + +EXPORT_SYMBOL(cxgb3_ofld_send); + +static int is_offloading(struct net_device *dev) +{ + struct adapter *adapter; + int i; + + read_lock_bh(&adapter_list_lock); + list_for_each_entry(adapter, &adapter_list, adapter_list) { + for_each_port(adapter, i) { + if (dev == adapter->port[i]) { + read_unlock_bh(&adapter_list_lock); + return 1; + } + } + } + read_unlock_bh(&adapter_list_lock); + return 0; +} + +static void cxgb_neigh_update(struct neighbour *neigh) +{ + struct net_device *dev; + + if (!neigh) + return; + dev = neigh->dev; + if (dev && (is_offloading(dev))) { + struct t3cdev *tdev = dev2t3cdev(dev); + + BUG_ON(!tdev); + t3_l2t_update(tdev, neigh); + } +} + +static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e) +{ + struct sk_buff *skb; + struct cpl_set_tcb_field *req; + + skb = alloc_skb(sizeof(*req), GFP_ATOMIC); + if (!skb) { + pr_err("%s: cannot allocate skb!\n", __func__); + return; + } + skb->priority = CPL_PRIORITY_CONTROL; + 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_SET_TCB_FIELD, tid)); + req->reply = 0; + req->cpu_idx = 0; + req->word = htons(W_TCB_L2T_IX); + req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX)); + req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx)); + tdev->send(tdev, skb); +} + +static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new, + struct neighbour *neigh, + const void *daddr) +{ + struct net_device *dev; + struct tid_info *ti; + struct t3cdev *tdev; + u32 tid; + int update_tcb; + struct l2t_entry *e; + struct t3c_tid_entry *te; + + dev = neigh->dev; + + if (!is_offloading(dev)) + return; + tdev = dev2t3cdev(dev); + BUG_ON(!tdev); + + /* Add new L2T entry */ + e = t3_l2t_get(tdev, new, dev, daddr); + if (!e) { + pr_err("%s: couldn't allocate new l2t entry!\n", __func__); + return; + } + + /* Walk tid table and notify clients of dst change. */ + ti = &(T3C_DATA(tdev))->tid_maps; + for (tid = 0; tid < ti->ntids; tid++) { + te = lookup_tid(ti, tid); + BUG_ON(!te); + if (te && te->ctx && te->client && te->client->redirect) { + update_tcb = te->client->redirect(te->ctx, old, new, e); + if (update_tcb) { + rcu_read_lock(); + l2t_hold(L2DATA(tdev), e); + rcu_read_unlock(); + set_l2t_ix(tdev, tid, e); + } + } + } + l2t_release(tdev, e); +} + +/* + * Allocate and initialize the TID tables. Returns 0 on success. + */ +static int init_tid_tabs(struct tid_info *t, unsigned int ntids, + unsigned int natids, unsigned int nstids, + unsigned int atid_base, unsigned int stid_base) +{ + unsigned long size = ntids * sizeof(*t->tid_tab) + + natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab); + + t->tid_tab = kvzalloc(size, GFP_KERNEL); + if (!t->tid_tab) + return -ENOMEM; + + t->stid_tab = (union listen_entry *)&t->tid_tab[ntids]; + t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids]; + t->ntids = ntids; + t->nstids = nstids; + t->stid_base = stid_base; + t->sfree = NULL; + t->natids = natids; + t->atid_base = atid_base; + t->afree = NULL; + t->stids_in_use = t->atids_in_use = 0; + atomic_set(&t->tids_in_use, 0); + spin_lock_init(&t->stid_lock); + spin_lock_init(&t->atid_lock); + + /* + * Setup the free lists for stid_tab and atid_tab. + */ + if (nstids) { + while (--nstids) + t->stid_tab[nstids - 1].next = &t->stid_tab[nstids]; + t->sfree = t->stid_tab; + } + if (natids) { + while (--natids) + t->atid_tab[natids - 1].next = &t->atid_tab[natids]; + t->afree = t->atid_tab; + } + return 0; +} + +static void free_tid_maps(struct tid_info *t) +{ + kvfree(t->tid_tab); +} + +static inline void add_adapter(struct adapter *adap) +{ + write_lock_bh(&adapter_list_lock); + list_add_tail(&adap->adapter_list, &adapter_list); + write_unlock_bh(&adapter_list_lock); +} + +static inline void remove_adapter(struct adapter *adap) +{ + write_lock_bh(&adapter_list_lock); + list_del(&adap->adapter_list); + write_unlock_bh(&adapter_list_lock); +} + +int cxgb3_offload_activate(struct adapter *adapter) +{ + struct t3cdev *dev = &adapter->tdev; + int natids, err; + struct t3c_data *t; + struct tid_range stid_range, tid_range; + struct mtutab mtutab; + unsigned int l2t_capacity; + struct l2t_data *l2td; + + t = kzalloc(sizeof(*t), GFP_KERNEL); + if (!t) + return -ENOMEM; + + err = -EOPNOTSUPP; + if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 || + dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 || + dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 || + dev->ctl(dev, GET_MTUS, &mtutab) < 0 || + dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 || + dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0) + goto out_free; + + err = -ENOMEM; + l2td = t3_init_l2t(l2t_capacity); + if (!l2td) + goto out_free; + + natids = min(tid_range.num / 2, MAX_ATIDS); + err = init_tid_tabs(&t->tid_maps, tid_range.num, natids, + stid_range.num, ATID_BASE, stid_range.base); + if (err) + goto out_free_l2t; + + t->mtus = mtutab.mtus; + t->nmtus = mtutab.size; + + INIT_WORK(&t->tid_release_task, t3_process_tid_release_list); + spin_lock_init(&t->tid_release_lock); + INIT_LIST_HEAD(&t->list_node); + t->dev = dev; + + RCU_INIT_POINTER(dev->l2opt, l2td); + T3C_DATA(dev) = t; + dev->recv = process_rx; + dev->neigh_update = t3_l2t_update; + + /* Register netevent handler once */ + if (list_empty(&adapter_list)) + register_netevent_notifier(&nb); + + t->nofail_skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_KERNEL); + t->release_list_incomplete = 0; + + add_adapter(adapter); + return 0; + +out_free_l2t: + kvfree(l2td); +out_free: + kfree(t); + return err; +} + +static void clean_l2_data(struct rcu_head *head) +{ + struct l2t_data *d = container_of(head, struct l2t_data, rcu_head); + kvfree(d); +} + + +void cxgb3_offload_deactivate(struct adapter *adapter) +{ + struct t3cdev *tdev = &adapter->tdev; + struct t3c_data *t = T3C_DATA(tdev); + struct l2t_data *d; + + remove_adapter(adapter); + if (list_empty(&adapter_list)) + unregister_netevent_notifier(&nb); + + free_tid_maps(&t->tid_maps); + T3C_DATA(tdev) = NULL; + rcu_read_lock(); + d = L2DATA(tdev); + rcu_read_unlock(); + RCU_INIT_POINTER(tdev->l2opt, NULL); + call_rcu(&d->rcu_head, clean_l2_data); + kfree_skb(t->nofail_skb); + kfree(t); +} + +static inline void register_tdev(struct t3cdev *tdev) +{ + static int unit; + + mutex_lock(&cxgb3_db_lock); + snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++); + list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list); + mutex_unlock(&cxgb3_db_lock); +} + +static inline void unregister_tdev(struct t3cdev *tdev) +{ + mutex_lock(&cxgb3_db_lock); + list_del(&tdev->ofld_dev_list); + mutex_unlock(&cxgb3_db_lock); +} + +static inline int adap2type(struct adapter *adapter) +{ + int type = 0; + + switch (adapter->params.rev) { + case T3_REV_A: + type = T3A; + break; + case T3_REV_B: + case T3_REV_B2: + type = T3B; + break; + case T3_REV_C: + type = T3C; + break; + } + return type; +} + +void cxgb3_adapter_ofld(struct adapter *adapter) +{ + struct t3cdev *tdev = &adapter->tdev; + + INIT_LIST_HEAD(&tdev->ofld_dev_list); + + cxgb3_set_dummy_ops(tdev); + tdev->send = t3_offload_tx; + tdev->ctl = cxgb_offload_ctl; + tdev->type = adap2type(adapter); + + register_tdev(tdev); +} + +void cxgb3_adapter_unofld(struct adapter *adapter) +{ + struct t3cdev *tdev = &adapter->tdev; + + tdev->recv = NULL; + tdev->neigh_update = NULL; + + unregister_tdev(tdev); +} + +void __init cxgb3_offload_init(void) +{ + int i; + + for (i = 0; i < NUM_CPL_CMDS; ++i) + cpl_handlers[i] = do_bad_cpl; + + t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl); + t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl); + t3_register_cpl_handler(CPL_RTE_WRITE_RPL, do_rte_write_rpl); + t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl); + t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl); + t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr); + t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl); + t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl); + t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl); + t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl); + t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl); + t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl); + t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl); + t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl); + t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl); + t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl); + t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss); + t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish); + t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl); + t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl); + t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term); + t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl); + t3_register_cpl_handler(CPL_TRACE_PKT, do_trace); + t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl); + t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl); + t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl); +} |