diff options
Diffstat (limited to 'drivers/net/ehea')
| -rw-r--r-- | drivers/net/ehea/ehea.h | 14 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_ethtool.c | 31 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 513 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_phyp.h | 1 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.c | 23 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.h | 4 |
6 files changed, 439 insertions, 147 deletions
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h index 8d58be56f4e3..ac21526b6de8 100644 --- a/drivers/net/ehea/ehea.h +++ b/drivers/net/ehea/ehea.h @@ -33,19 +33,20 @@ #include <linux/ethtool.h> #include <linux/vmalloc.h> #include <linux/if_vlan.h> +#include <linux/inet_lro.h> #include <asm/ibmebus.h> #include <asm/abs_addr.h> #include <asm/io.h> #define DRV_NAME "ehea" -#define DRV_VERSION "EHEA_0074" +#define DRV_VERSION "EHEA_0078" /* eHEA capability flags */ #define DLPAR_PORT_ADD_REM 1 #define DLPAR_MEM_ADD 2 #define DLPAR_MEM_REM 4 -#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM) +#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM | DLPAR_MEM_ADD) #define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \ | NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR) @@ -58,6 +59,7 @@ #define EHEA_SMALL_QUEUES #define EHEA_NUM_TX_QP 1 +#define EHEA_LRO_MAX_AGGR 64 #ifdef EHEA_SMALL_QUEUES #define EHEA_MAX_CQE_COUNT 1023 @@ -84,6 +86,8 @@ #define EHEA_RQ2_PKT_SIZE 1522 #define EHEA_L_PKT_SIZE 256 /* low latency */ +#define MAX_LRO_DESCRIPTORS 8 + /* Send completion signaling */ /* Protection Domain Identifier */ @@ -351,6 +355,7 @@ struct ehea_q_skb_arr { * Port resources */ struct ehea_port_res { + struct napi_struct napi; struct port_stats p_stats; struct ehea_mr send_mr; /* send memory region */ struct ehea_mr recv_mr; /* receive memory region */ @@ -362,7 +367,6 @@ struct ehea_port_res { struct ehea_cq *send_cq; struct ehea_cq *recv_cq; struct ehea_eq *eq; - struct net_device *d_netdev; struct ehea_q_skb_arr rq1_skba; struct ehea_q_skb_arr rq2_skba; struct ehea_q_skb_arr rq3_skba; @@ -376,6 +380,8 @@ struct ehea_port_res { u64 tx_packets; u64 rx_packets; u32 poll_counter; + struct net_lro_mgr lro_mgr; + struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS]; }; @@ -385,7 +391,6 @@ struct ehea_adapter { struct ibmebus_dev *ebus_dev; struct ehea_port *port[EHEA_MAX_PORTS]; struct ehea_eq *neq; /* notification event queue */ - struct workqueue_struct *ehea_wq; struct tasklet_struct neq_tasklet; struct ehea_mr mr; u32 pd; /* protection domain */ @@ -429,6 +434,7 @@ struct ehea_port { u32 msg_enable; u32 sig_comp_iv; u32 state; + u32 lro_max_aggr; u8 phy_link; u8 full_duplex; u8 autoneg; diff --git a/drivers/net/ehea/ehea_ethtool.c b/drivers/net/ehea/ehea_ethtool.c index decec8cfe96b..679f40ee9572 100644 --- a/drivers/net/ehea/ehea_ethtool.c +++ b/drivers/net/ehea/ehea_ethtool.c @@ -183,6 +183,9 @@ static char ehea_ethtool_stats_keys[][ETH_GSTRING_LEN] = { {"PR5 free_swqes"}, {"PR6 free_swqes"}, {"PR7 free_swqes"}, + {"LRO aggregated"}, + {"LRO flushed"}, + {"LRO no_desc"}, }; static void ehea_get_strings(struct net_device *dev, u32 stringset, u8 *data) @@ -193,9 +196,14 @@ static void ehea_get_strings(struct net_device *dev, u32 stringset, u8 *data) } } -static int ehea_get_stats_count(struct net_device *dev) +static int ehea_get_sset_count(struct net_device *dev, int sset) { - return ARRAY_SIZE(ehea_ethtool_stats_keys); + switch (sset) { + case ETH_SS_STATS: + return ARRAY_SIZE(ehea_ethtool_stats_keys); + default: + return -EOPNOTSUPP; + } } static void ehea_get_ethtool_stats(struct net_device *dev, @@ -204,7 +212,7 @@ static void ehea_get_ethtool_stats(struct net_device *dev, int i, k, tmp; struct ehea_port *port = netdev_priv(dev); - for (i = 0; i < ehea_get_stats_count(dev); i++) + for (i = 0; i < ehea_get_sset_count(dev, ETH_SS_STATS); i++) data[i] = 0; i = 0; @@ -239,6 +247,18 @@ static void ehea_get_ethtool_stats(struct net_device *dev, for (k = 0; k < 8; k++) data[i++] = atomic_read(&port->port_res[k].swqe_avail); + for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++) + tmp |= port->port_res[k].lro_mgr.stats.aggregated; + data[i++] = tmp; + + for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++) + tmp |= port->port_res[k].lro_mgr.stats.flushed; + data[i++] = tmp; + + for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++) + tmp |= port->port_res[k].lro_mgr.stats.no_desc; + data[i++] = tmp; + } const struct ethtool_ops ehea_ethtool_ops = { @@ -247,12 +267,9 @@ const struct ethtool_ops ehea_ethtool_ops = { .get_msglevel = ehea_get_msglevel, .set_msglevel = ehea_set_msglevel, .get_link = ethtool_op_get_link, - .get_tx_csum = ethtool_op_get_tx_csum, - .get_sg = ethtool_op_get_sg, - .get_tso = ethtool_op_get_tso, .set_tso = ethtool_op_set_tso, .get_strings = ehea_get_strings, - .get_stats_count = ehea_get_stats_count, + .get_sset_count = ehea_get_sset_count, .get_ethtool_stats = ehea_get_ethtool_stats, .get_rx_csum = ehea_get_rx_csum, .set_settings = ehea_set_settings, diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index 717b12984d10..2ba57e6ace4d 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -52,6 +52,8 @@ static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; static int sq_entries = EHEA_DEF_ENTRIES_SQ; static int use_mcs = 0; +static int use_lro = 0; +static int lro_max_aggr = EHEA_LRO_MAX_AGGR; static int num_tx_qps = EHEA_NUM_TX_QP; static int prop_carrier_state = 0; @@ -62,6 +64,8 @@ module_param(rq3_entries, int, 0); module_param(sq_entries, int, 0); module_param(prop_carrier_state, int, 0); module_param(use_mcs, int, 0); +module_param(use_lro, int, 0); +module_param(lro_max_aggr, int, 0); module_param(num_tx_qps, int, 0); MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); @@ -82,12 +86,17 @@ MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); +MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " + __MODULE_STRING(EHEA_LRO_MAX_AGGR)); +MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " + "Default = 0"); + static int port_name_cnt = 0; static LIST_HEAD(adapter_list); u64 ehea_driver_flags = 0; -struct workqueue_struct *ehea_driver_wq; struct work_struct ehea_rereg_mr_task; +struct semaphore dlpar_mem_lock; static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev, const struct of_device_id *id); @@ -168,16 +177,24 @@ static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; struct net_device *dev = pr->port->netdev; int max_index_mask = pr->rq1_skba.len - 1; + int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; + int adder = 0; int i; - if (!nr_of_wqes) + pr->rq1_skba.os_skbs = 0; + + if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { + pr->rq1_skba.index = index; + pr->rq1_skba.os_skbs = fill_wqes; return; + } - for (i = 0; i < nr_of_wqes; i++) { + for (i = 0; i < fill_wqes; i++) { if (!skb_arr_rq1[index]) { skb_arr_rq1[index] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); if (!skb_arr_rq1[index]) { + pr->rq1_skba.os_skbs = fill_wqes - i; ehea_error("%s: no mem for skb/%d wqes filled", dev->name, i); break; @@ -185,9 +202,14 @@ static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) } index--; index &= max_index_mask; + adder++; } + + if (adder == 0) + return; + /* Ring doorbell */ - ehea_update_rq1a(pr->qp, i); + ehea_update_rq1a(pr->qp, adder); } static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) @@ -221,16 +243,21 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr, struct sk_buff **skb_arr = q_skba->arr; struct ehea_rwqe *rwqe; int i, index, max_index_mask, fill_wqes; + int adder = 0; int ret = 0; fill_wqes = q_skba->os_skbs + num_wqes; + q_skba->os_skbs = 0; - if (!fill_wqes) + if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { + q_skba->os_skbs = fill_wqes; return ret; + } index = q_skba->index; max_index_mask = q_skba->len - 1; for (i = 0; i < fill_wqes; i++) { + u64 tmp_addr; struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); if (!skb) { ehea_error("%s: no mem for skb/%d wqes filled", @@ -242,30 +269,37 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr, skb_reserve(skb, NET_IP_ALIGN); skb_arr[index] = skb; + tmp_addr = ehea_map_vaddr(skb->data); + if (tmp_addr == -1) { + dev_kfree_skb(skb); + q_skba->os_skbs = fill_wqes - i; + ret = 0; + break; + } rwqe = ehea_get_next_rwqe(qp, rq_nr); rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); rwqe->sg_list[0].l_key = pr->recv_mr.lkey; - rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); + rwqe->sg_list[0].vaddr = tmp_addr; rwqe->sg_list[0].len = packet_size; rwqe->data_segments = 1; index++; index &= max_index_mask; - - if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) - goto out; + adder++; } q_skba->index = index; + if (adder == 0) + goto out; /* Ring doorbell */ iosync(); if (rq_nr == 2) - ehea_update_rq2a(pr->qp, i); + ehea_update_rq2a(pr->qp, adder); else - ehea_update_rq3a(pr->qp, i); + ehea_update_rq3a(pr->qp, adder); out: return ret; } @@ -386,16 +420,70 @@ static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { ehea_error("Critical receive error. Resetting port."); - queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task); + schedule_work(&pr->port->reset_task); return 1; } return 0; } -static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, - struct ehea_port_res *pr, - int *budget) +static int get_skb_hdr(struct sk_buff *skb, void **iphdr, + void **tcph, u64 *hdr_flags, void *priv) +{ + struct ehea_cqe *cqe = priv; + unsigned int ip_len; + struct iphdr *iph; + + /* non tcp/udp packets */ + if (!cqe->header_length) + return -1; + + /* non tcp packet */ + skb_reset_network_header(skb); + iph = ip_hdr(skb); + if (iph->protocol != IPPROTO_TCP) + return -1; + + ip_len = ip_hdrlen(skb); + skb_set_transport_header(skb, ip_len); + *tcph = tcp_hdr(skb); + + /* check if ip header and tcp header are complete */ + if (iph->tot_len < ip_len + tcp_hdrlen(skb)) + return -1; + + *hdr_flags = LRO_IPV4 | LRO_TCP; + *iphdr = iph; + + return 0; +} + +static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, + struct sk_buff *skb) +{ + int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) + && pr->port->vgrp; + + if (use_lro) { + if (vlan_extracted) + lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, + pr->port->vgrp, + cqe->vlan_tag, + cqe); + else + lro_receive_skb(&pr->lro_mgr, skb, cqe); + } else { + if (vlan_extracted) + vlan_hwaccel_receive_skb(skb, pr->port->vgrp, + cqe->vlan_tag); + else + netif_receive_skb(skb); + } +} + +static int ehea_proc_rwqes(struct net_device *dev, + struct ehea_port_res *pr, + int budget) { struct ehea_port *port = pr->port; struct ehea_qp *qp = pr->qp; @@ -408,18 +496,16 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, int skb_arr_rq2_len = pr->rq2_skba.len; int skb_arr_rq3_len = pr->rq3_skba.len; int processed, processed_rq1, processed_rq2, processed_rq3; - int wqe_index, last_wqe_index, rq, my_quota, port_reset; + int wqe_index, last_wqe_index, rq, port_reset; processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; last_wqe_index = 0; - my_quota = min(*budget, dev->quota); cqe = ehea_poll_rq1(qp, &wqe_index); - while ((my_quota > 0) && cqe) { + while ((processed < budget) && cqe) { ehea_inc_rq1(qp); processed_rq1++; processed++; - my_quota--; if (netif_msg_rx_status(port)) ehea_dump(cqe, sizeof(*cqe), "CQE"); @@ -434,14 +520,14 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, if (netif_msg_rx_err(port)) ehea_error("LL rq1: skb=NULL"); - skb = netdev_alloc_skb(port->netdev, + skb = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); if (!skb) break; } skb_copy_to_linear_data(skb, ((char*)cqe) + 64, cqe->num_bytes_transfered - 4); - ehea_fill_skb(port->netdev, skb, cqe); + ehea_fill_skb(dev, skb, cqe); } else if (rq == 2) { /* RQ2 */ skb = get_skb_by_index(skb_arr_rq2, skb_arr_rq2_len, cqe); @@ -450,7 +536,7 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, ehea_error("rq2: skb=NULL"); break; } - ehea_fill_skb(port->netdev, skb, cqe); + ehea_fill_skb(dev, skb, cqe); processed_rq2++; } else { /* RQ3 */ skb = get_skb_by_index(skb_arr_rq3, @@ -460,18 +546,12 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, ehea_error("rq3: skb=NULL"); break; } - ehea_fill_skb(port->netdev, skb, cqe); + ehea_fill_skb(dev, skb, cqe); processed_rq3++; } - if ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) - && port->vgrp) - vlan_hwaccel_receive_skb(skb, port->vgrp, - cqe->vlan_tag); - else - netif_receive_skb(skb); - - port->netdev->last_rx = jiffies; + ehea_proc_skb(pr, cqe, skb); + dev->last_rx = jiffies; } else { pr->p_stats.poll_receive_errors++; port_reset = ehea_treat_poll_error(pr, rq, cqe, @@ -482,16 +562,16 @@ static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev, } cqe = ehea_poll_rq1(qp, &wqe_index); } + if (use_lro) + lro_flush_all(&pr->lro_mgr); pr->rx_packets += processed; - *budget -= processed; ehea_refill_rq1(pr, last_wqe_index, processed_rq1); ehea_refill_rq2(pr, processed_rq2); ehea_refill_rq3(pr, processed_rq3); - cqe = ehea_poll_rq1(qp, &wqe_index); - return cqe; + return processed; } static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) @@ -515,8 +595,7 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) ehea_error("Send Completion Error: Resetting port"); if (netif_msg_tx_err(pr->port)) ehea_dump(cqe, sizeof(*cqe), "Send CQE"); - queue_work(pr->port->adapter->ehea_wq, - &pr->port->reset_task); + schedule_work(&pr->port->reset_task); break; } @@ -554,22 +633,27 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) } #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 +#define EHEA_POLL_MAX_CQES 65535 -static int ehea_poll(struct net_device *dev, int *budget) +static int ehea_poll(struct napi_struct *napi, int budget) { - struct ehea_port_res *pr = dev->priv; + struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, napi); + struct net_device *dev = pr->port->netdev; struct ehea_cqe *cqe; struct ehea_cqe *cqe_skb = NULL; int force_irq, wqe_index; - - cqe = ehea_poll_rq1(pr->qp, &wqe_index); - cqe_skb = ehea_poll_cq(pr->send_cq); + int rx = 0; force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); + cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); - if ((!cqe && !cqe_skb) || force_irq) { + if (!force_irq) + rx += ehea_proc_rwqes(dev, pr, budget - rx); + + while ((rx != budget) || force_irq) { pr->poll_counter = 0; - netif_rx_complete(dev); + force_irq = 0; + netif_rx_complete(dev, napi); ehea_reset_cq_ep(pr->recv_cq); ehea_reset_cq_ep(pr->send_cq); ehea_reset_cq_n1(pr->recv_cq); @@ -578,43 +662,35 @@ static int ehea_poll(struct net_device *dev, int *budget) cqe_skb = ehea_poll_cq(pr->send_cq); if (!cqe && !cqe_skb) - return 0; - - if (!netif_rx_reschedule(dev, dev->quota)) - return 0; - } + return rx; - cqe = ehea_proc_rwqes(dev, pr, budget); - cqe_skb = ehea_proc_cqes(pr, 300); + if (!netif_rx_reschedule(dev, napi)) + return rx; - if (cqe || cqe_skb) - pr->poll_counter++; + cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); + rx += ehea_proc_rwqes(dev, pr, budget - rx); + } - return 1; + pr->poll_counter++; + return rx; } #ifdef CONFIG_NET_POLL_CONTROLLER static void ehea_netpoll(struct net_device *dev) { struct ehea_port *port = netdev_priv(dev); + int i; - netif_rx_schedule(port->port_res[0].d_netdev); + for (i = 0; i < port->num_def_qps; i++) + netif_rx_schedule(dev, &port->port_res[i].napi); } #endif -static int ehea_poll_firstqueue(struct net_device *dev, int *budget) -{ - struct ehea_port *port = netdev_priv(dev); - struct net_device *d_dev = port->port_res[0].d_netdev; - - return ehea_poll(d_dev, budget); -} - static irqreturn_t ehea_recv_irq_handler(int irq, void *param) { struct ehea_port_res *pr = param; - netif_rx_schedule(pr->d_netdev); + netif_rx_schedule(pr->port->netdev, &pr->napi); return IRQ_HANDLED; } @@ -638,7 +714,7 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) eqe = ehea_poll_eq(port->qp_eq); } - queue_work(port->adapter->ehea_wq, &port->reset_task); + schedule_work(&port->reset_task); return IRQ_HANDLED; } @@ -1236,14 +1312,16 @@ static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, kfree(init_attr); - pr->d_netdev = alloc_netdev(0, "", ether_setup); - if (!pr->d_netdev) - goto out_free; - pr->d_netdev->priv = pr; - pr->d_netdev->weight = 64; - pr->d_netdev->poll = ehea_poll; - set_bit(__LINK_STATE_START, &pr->d_netdev->state); - strcpy(pr->d_netdev->name, port->netdev->name); + netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); + + pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; + pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; + pr->lro_mgr.lro_arr = pr->lro_desc; + pr->lro_mgr.get_skb_header = get_skb_hdr; + pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; + pr->lro_mgr.dev = port->netdev; + pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; + pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; ret = 0; goto out; @@ -1266,8 +1344,6 @@ static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) { int ret, i; - free_netdev(pr->d_netdev); - ret = ehea_destroy_qp(pr->qp); if (!ret) { @@ -1915,11 +1991,12 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) ehea_dump(swqe, 512, "swqe"); } - if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) - goto out; + if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { + netif_stop_queue(dev); + swqe->tx_control |= EHEA_SWQE_PURGE; + } ehea_post_swqe(pr->qp, swqe); - pr->tx_packets++; if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { spin_lock_irqsave(&pr->netif_queue, flags); @@ -1932,7 +2009,7 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) } dev->trans_start = jiffies; spin_unlock(&pr->xmit_lock); -out: + return NETDEV_TX_OK; } @@ -2248,6 +2325,22 @@ out: return ret; } +static void port_napi_disable(struct ehea_port *port) +{ + int i; + + for (i = 0; i < port->num_def_qps; i++) + napi_disable(&port->port_res[i].napi); +} + +static void port_napi_enable(struct ehea_port *port) +{ + int i; + + for (i = 0; i < port->num_def_qps; i++) + napi_enable(&port->port_res[i].napi); +} + static int ehea_open(struct net_device *dev) { int ret; @@ -2259,8 +2352,10 @@ static int ehea_open(struct net_device *dev) ehea_info("enabling port %s", dev->name); ret = ehea_up(dev); - if (!ret) + if (!ret) { + port_napi_enable(port); netif_start_queue(dev); + } up(&port->port_lock); @@ -2269,7 +2364,7 @@ static int ehea_open(struct net_device *dev) static int ehea_down(struct net_device *dev) { - int ret, i; + int ret; struct ehea_port *port = netdev_priv(dev); if (port->state == EHEA_PORT_DOWN) @@ -2278,10 +2373,7 @@ static int ehea_down(struct net_device *dev) ehea_drop_multicast_list(dev); ehea_free_interrupts(dev); - for (i = 0; i < port->num_def_qps; i++) - while (test_bit(__LINK_STATE_RX_SCHED, - &port->port_res[i].d_netdev->state)) - msleep(1); + port_napi_disable(port); port->state = EHEA_PORT_DOWN; @@ -2301,7 +2393,7 @@ static int ehea_stop(struct net_device *dev) if (netif_msg_ifdown(port)) ehea_info("disabling port %s", dev->name); - flush_workqueue(port->adapter->ehea_wq); + flush_scheduled_work(); down(&port->port_lock); netif_stop_queue(dev); ret = ehea_down(dev); @@ -2309,6 +2401,192 @@ static int ehea_stop(struct net_device *dev) return ret; } +void ehea_purge_sq(struct ehea_qp *orig_qp) +{ + struct ehea_qp qp = *orig_qp; + struct ehea_qp_init_attr *init_attr = &qp.init_attr; + struct ehea_swqe *swqe; + int wqe_index; + int i; + + for (i = 0; i < init_attr->act_nr_send_wqes; i++) { + swqe = ehea_get_swqe(&qp, &wqe_index); + swqe->tx_control |= EHEA_SWQE_PURGE; + } +} + +int ehea_stop_qps(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + struct hcp_modify_qp_cb0* cb0; + int ret = -EIO; + int dret; + int i; + u64 hret; + u64 dummy64 = 0; + u16 dummy16 = 0; + + cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!cb0) { + ret = -ENOMEM; + goto out; + } + + for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { + struct ehea_port_res *pr = &port->port_res[i]; + struct ehea_qp *qp = pr->qp; + + /* Purge send queue */ + ehea_purge_sq(qp); + + /* Disable queue pair */ + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), + cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (1)"); + goto out; + } + + cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; + cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; + + hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, + 1), cb0, &dummy64, + &dummy64, &dummy16, &dummy16); + if (hret != H_SUCCESS) { + ehea_error("modify_ehea_qp failed (1)"); + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), + cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (2)"); + goto out; + } + + /* deregister shared memory regions */ + dret = ehea_rem_smrs(pr); + if (dret) { + ehea_error("unreg shared memory region failed"); + goto out; + } + } + + ret = 0; +out: + kfree(cb0); + + return ret; +} + +void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res * pr) +{ + struct ehea_qp qp = *orig_qp; + struct ehea_qp_init_attr *init_attr = &qp.init_attr; + struct ehea_rwqe *rwqe; + struct sk_buff **skba_rq2 = pr->rq2_skba.arr; + struct sk_buff **skba_rq3 = pr->rq3_skba.arr; + struct sk_buff *skb; + u32 lkey = pr->recv_mr.lkey; + + + int i; + int index; + + for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { + rwqe = ehea_get_next_rwqe(&qp, 2); + rwqe->sg_list[0].l_key = lkey; + index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); + skb = skba_rq2[index]; + if (skb) + rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); + } + + for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { + rwqe = ehea_get_next_rwqe(&qp, 3); + rwqe->sg_list[0].l_key = lkey; + index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); + skb = skba_rq3[index]; + if (skb) + rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); + } +} + +int ehea_restart_qps(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + int ret = 0; + int i; + + struct hcp_modify_qp_cb0* cb0; + u64 hret; + u64 dummy64 = 0; + u16 dummy16 = 0; + + cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!cb0) { + ret = -ENOMEM; + goto out; + } + + for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { + struct ehea_port_res *pr = &port->port_res[i]; + struct ehea_qp *qp = pr->qp; + + ret = ehea_gen_smrs(pr); + if (ret) { + ehea_error("creation of shared memory regions failed"); + goto out; + } + + ehea_update_rqs(qp, pr); + + /* Enable queue pair */ + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), + cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (1)"); + goto out; + } + + cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; + cb0->qp_ctl_reg |= H_QP_CR_ENABLED; + + hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, + 1), cb0, &dummy64, + &dummy64, &dummy16, &dummy16); + if (hret != H_SUCCESS) { + ehea_error("modify_ehea_qp failed (1)"); + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), + cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (2)"); + goto out; + } + + /* refill entire queue */ + ehea_refill_rq1(pr, pr->rq1_skba.index, 0); + ehea_refill_rq2(pr, 0); + ehea_refill_rq3(pr, 0); + } +out: + kfree(cb0); + + return ret; +} + static void ehea_reset_port(struct work_struct *work) { int ret; @@ -2319,7 +2597,8 @@ static void ehea_reset_port(struct work_struct *work) port->resets++; down(&port->port_lock); netif_stop_queue(dev); - netif_poll_disable(dev); + + port_napi_disable(port); ehea_down(dev); @@ -2327,10 +2606,13 @@ static void ehea_reset_port(struct work_struct *work) if (ret) goto out; + ehea_set_multicast_list(dev); + if (netif_msg_timer(port)) ehea_info("Device %s resetted successfully", dev->name); - netif_poll_enable(dev); + port_napi_enable(port); + netif_wake_queue(dev); out: up(&port->port_lock); @@ -2342,6 +2624,7 @@ static void ehea_rereg_mrs(struct work_struct *work) int ret, i; struct ehea_adapter *adapter; + down(&dlpar_mem_lock); ehea_info("LPAR memory enlarged - re-initializing driver"); list_for_each_entry(adapter, &adapter_list, list) @@ -2354,12 +2637,14 @@ static void ehea_rereg_mrs(struct work_struct *work) struct net_device *dev = port->netdev; if (dev->flags & IFF_UP) { - ehea_info("stopping %s", - dev->name); down(&port->port_lock); netif_stop_queue(dev); - netif_poll_disable(dev); - ehea_down(dev); + ret = ehea_stop_qps(dev); + if (ret) { + up(&port->port_lock); + goto out; + } + port_napi_disable(port); up(&port->port_lock); } } @@ -2375,10 +2660,11 @@ static void ehea_rereg_mrs(struct work_struct *work) } ehea_destroy_busmap(); - ret = ehea_create_busmap(); - if (ret) + if (ret) { + ehea_error("creating ehea busmap failed"); goto out; + } clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); @@ -2400,21 +2686,18 @@ static void ehea_rereg_mrs(struct work_struct *work) struct net_device *dev = port->netdev; if (dev->flags & IFF_UP) { - ehea_info("restarting %s", - dev->name); down(&port->port_lock); - - ret = ehea_up(dev); - if (!ret) { - netif_poll_enable(dev); + port_napi_enable(port); + ret = ehea_restart_qps(dev); + if (!ret) netif_wake_queue(dev); - } - up(&port->port_lock); } } } } + up(&dlpar_mem_lock); + ehea_info("re-initializing driver complete"); out: return; } @@ -2423,8 +2706,9 @@ static void ehea_tx_watchdog(struct net_device *dev) { struct ehea_port *port = netdev_priv(dev); - if (netif_carrier_ok(dev)) - queue_work(port->adapter->ehea_wq, &port->reset_task); + if (netif_carrier_ok(dev) && + !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) + schedule_work(&port->reset_task); } int ehea_sense_adapter_attr(struct ehea_adapter *adapter) @@ -2639,16 +2923,12 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, SET_NETDEV_DEV(dev, port_dev); /* initialize net_device structure */ - SET_MODULE_OWNER(dev); - memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); dev->open = ehea_open; - dev->poll = ehea_poll_firstqueue; #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = ehea_netpoll; #endif - dev->weight = 64; dev->stop = ehea_stop; dev->hard_start_xmit = ehea_start_xmit; dev->get_stats = ehea_get_stats; @@ -2681,6 +2961,8 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, goto out_dereg_bc; } + port->lro_max_aggr = lro_max_aggr; + ret = ehea_get_jumboframe_status(port, &jumbo); if (ret) ehea_error("failed determining jumbo frame status for %s", @@ -2959,15 +3241,9 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev, goto out_kill_eq; } - adapter->ehea_wq = create_workqueue("ehea_wq"); - if (!adapter->ehea_wq) { - ret = -EIO; - goto out_free_irq; - } - ret = ehea_create_device_sysfs(dev); if (ret) - goto out_kill_wq; + goto out_free_irq; ret = ehea_setup_ports(adapter); if (ret) { @@ -2981,9 +3257,6 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev, out_rem_dev_sysfs: ehea_remove_device_sysfs(dev); -out_kill_wq: - destroy_workqueue(adapter->ehea_wq); - out_free_irq: ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); @@ -3009,7 +3282,7 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev) ehea_remove_device_sysfs(dev); - destroy_workqueue(adapter->ehea_wq); + flush_scheduled_work(); ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); tasklet_kill(&adapter->neq_tasklet); @@ -3067,9 +3340,9 @@ int __init ehea_module_init(void) printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION); - ehea_driver_wq = create_workqueue("ehea_driver_wq"); INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); + sema_init(&dlpar_mem_lock, 1); ret = check_module_parm(); if (ret) @@ -3100,7 +3373,7 @@ out: static void __exit ehea_module_exit(void) { - destroy_workqueue(ehea_driver_wq); + flush_scheduled_work(); driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); ibmebus_unregister_driver(&ehea_driver); ehea_destroy_busmap(); diff --git a/drivers/net/ehea/ehea_phyp.h b/drivers/net/ehea/ehea_phyp.h index 89b63531ff26..faa191d23b86 100644 --- a/drivers/net/ehea/ehea_phyp.h +++ b/drivers/net/ehea/ehea_phyp.h @@ -126,6 +126,7 @@ struct hcp_modify_qp_cb0 { #define H_QP_CR_STATE_RDY2RCV 0x0000030000000000ULL /* Ready to recv */ #define H_QP_CR_STATE_RDY2SND 0x0000050000000000ULL /* Ready to send */ #define H_QP_CR_STATE_ERROR 0x0000800000000000ULL /* Error */ +#define H_QP_CR_RES_STATE 0x0000007F00000000ULL /* Resultant state */ struct hcp_modify_qp_cb1 { u32 qpn; /* 00 */ diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c index c82e24596074..83b76432b41a 100644 --- a/drivers/net/ehea/ehea_qmr.c +++ b/drivers/net/ehea/ehea_qmr.c @@ -34,7 +34,6 @@ struct ehea_busmap ehea_bmap = { 0, 0, NULL }; extern u64 ehea_driver_flags; -extern struct workqueue_struct *ehea_driver_wq; extern struct work_struct ehea_rereg_mr_task; @@ -563,8 +562,7 @@ int ehea_destroy_qp(struct ehea_qp *qp) int ehea_create_busmap( void ) { u64 vaddr = EHEA_BUSMAP_START; - unsigned long abs_max_pfn = 0; - unsigned long sec_max_pfn; + unsigned long high_section_index = 0; int i; /* @@ -574,14 +572,10 @@ int ehea_create_busmap( void ) ehea_bmap.valid_sections = 0; for (i = 0; i < NR_MEM_SECTIONS; i++) - if (valid_section_nr(i)) { - sec_max_pfn = section_nr_to_pfn(i); - if (sec_max_pfn > abs_max_pfn) - abs_max_pfn = sec_max_pfn; - ehea_bmap.valid_sections++; - } + if (valid_section_nr(i)) + high_section_index = i; - ehea_bmap.entries = abs_max_pfn / EHEA_PAGES_PER_SECTION + 1; + ehea_bmap.entries = high_section_index + 1; ehea_bmap.vaddr = vmalloc(ehea_bmap.entries * sizeof(*ehea_bmap.vaddr)); if (!ehea_bmap.vaddr) @@ -593,6 +587,7 @@ int ehea_create_busmap( void ) if (pfn_valid(pfn)) { ehea_bmap.vaddr[i] = vaddr; vaddr += EHEA_SECTSIZE; + ehea_bmap.valid_sections++; } else ehea_bmap.vaddr[i] = 0; } @@ -622,7 +617,7 @@ u64 ehea_map_vaddr(void *caddr) if (unlikely(mapped_addr == -1)) if (!test_and_set_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) - queue_work(ehea_driver_wq, &ehea_rereg_mr_task); + schedule_work(&ehea_rereg_mr_task); return mapped_addr; } @@ -637,7 +632,7 @@ int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr) mr_len = ehea_bmap.valid_sections * EHEA_SECTSIZE; - pt = kzalloc(EHEA_MAX_RPAGE * sizeof(u64), GFP_KERNEL); + pt = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!pt) { ehea_error("no mem"); ret = -ENOMEM; @@ -660,8 +655,8 @@ int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr) void *sectbase = __va(i << SECTION_SIZE_BITS); unsigned long k = 0; - for (j = 0; j < (PAGES_PER_SECTION / EHEA_MAX_RPAGE); - j++) { + for (j = 0; j < (EHEA_PAGES_PER_SECTION / + EHEA_MAX_RPAGE); j++) { for (m = 0; m < EHEA_MAX_RPAGE; m++) { pg = sectbase + ((k++) * EHEA_PAGESIZE); diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h index b71f8452a5e3..562de0ebdd85 100644 --- a/drivers/net/ehea/ehea_qmr.h +++ b/drivers/net/ehea/ehea_qmr.h @@ -39,7 +39,7 @@ #define EHEA_PAGESHIFT 12 #define EHEA_PAGESIZE (1UL << EHEA_PAGESHIFT) #define EHEA_SECTSIZE (1UL << 24) -#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> PAGE_SHIFT) +#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> EHEA_PAGESHIFT) #if (1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE #error eHEA module can't work if kernel sectionsize < ehea sectionsize @@ -145,7 +145,7 @@ struct ehea_rwqe { #define EHEA_CQE_VLAN_TAG_XTRACT 0x0400 #define EHEA_CQE_TYPE_RQ 0x60 -#define EHEA_CQE_STAT_ERR_MASK 0x721F +#define EHEA_CQE_STAT_ERR_MASK 0x720F #define EHEA_CQE_STAT_FAT_ERR_MASK 0x1F #define EHEA_CQE_STAT_ERR_TCP 0x4000 #define EHEA_CQE_STAT_ERR_IP 0x2000 |