From patchwork Fri Aug 21 08:29:24 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taku Izumi X-Patchwork-Id: 7050171 Return-Path: X-Original-To: patchwork-platform-driver-x86@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8318CC05AC for ; Fri, 21 Aug 2015 08:37:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 64DC620253 for ; Fri, 21 Aug 2015 08:37:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 19FE520612 for ; Fri, 21 Aug 2015 08:37:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753401AbbHUIfA (ORCPT ); Fri, 21 Aug 2015 04:35:00 -0400 Received: from mgwym03.jp.fujitsu.com ([211.128.242.42]:64369 "EHLO mgwym03.jp.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752461AbbHUIe6 (ORCPT ); Fri, 21 Aug 2015 04:34:58 -0400 Received: from yt-mxq.gw.nic.fujitsu.com (unknown [192.168.229.66]) by mgwym03.jp.fujitsu.com with smtp id 3efa_1ebf_667b185d_1960_42d6_b071_7ba4405a47d9; Fri, 21 Aug 2015 17:34:56 +0900 Received: from m3051.s.css.fujitsu.com (m3051.s.css.fujitsu.com [10.134.21.209]) by yt-mxq.gw.nic.fujitsu.com (Postfix) with ESMTP id D85F5AC0056; Fri, 21 Aug 2015 17:34:55 +0900 (JST) Received: from RX300S6 (unknown [10.124.196.197]) by m3051.s.css.fujitsu.com (Postfix) with SMTP id 9784EE8; Fri, 21 Aug 2015 17:34:54 +0900 (JST) Received: by RX300S6 (sSMTP sendmail emulation); Fri, 21 Aug 2015 17:30:02 +0900 From: Taku Izumi To: netdev@vger.kernel.org, davem@davemloft.net Cc: platform-driver-x86@vger.kernel.org, dvhart@infradead.org, rkhan@redhat.com, alexander.h.duyck@redhat.com, linux-acpi@vger.kernel.org, joe@perches.com, sergei.shtylyov@cogentembedded.com, stephen@networkplumber.org, yasu.isimatu@gmail.com, Taku Izumi Subject: [PATCH v3 08/22] fjes: net_device_ops.ndo_start_xmit Date: Fri, 21 Aug 2015 17:29:24 +0900 Message-Id: <1440145778-15941-8-git-send-email-izumi.taku@jp.fujitsu.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440145778-15941-1-git-send-email-izumi.taku@jp.fujitsu.com> References: <1440145680-15851-1-git-send-email-izumi.taku@jp.fujitsu.com> <1440145778-15941-1-git-send-email-izumi.taku@jp.fujitsu.com> X-TM-AS-MML: disable Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Spam-Status: No, score=-7.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds net_device_ops.ndo_start_xmit callback, which is called when sending packets. Signed-off-by: Taku Izumi --- drivers/net/fjes/fjes.h | 1 + drivers/net/fjes/fjes_hw.c | 55 ++++++++++++++ drivers/net/fjes/fjes_hw.h | 12 +++ drivers/net/fjes/fjes_main.c | 177 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 245 insertions(+) diff --git a/drivers/net/fjes/fjes.h b/drivers/net/fjes/fjes.h index f182ed3..7af4304 100644 --- a/drivers/net/fjes/fjes.h +++ b/drivers/net/fjes/fjes.h @@ -29,6 +29,7 @@ #define FJES_ACPI_SYMBOL "Extended Socket" #define FJES_MAX_QUEUES 1 #define FJES_TX_RETRY_INTERVAL (20 * HZ) +#define FJES_TX_RETRY_TIMEOUT (100) #define FJES_OPEN_ZONE_UPDATE_WAIT (300) /* msec */ /* board specific private data structure */ diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index 1935f48..487dbc6 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -791,3 +791,58 @@ int fjes_hw_wait_epstop(struct fjes_hw *hw) return (wait_time < FJES_COMMAND_EPSTOP_WAIT_TIMEOUT * 1000) ? 0 : -EBUSY; } + +bool fjes_hw_check_epbuf_version(struct epbuf_handler *epbh, u32 version) +{ + union ep_buffer_info *info = epbh->info; + + return (info->common.version == version); +} + +bool fjes_hw_check_mtu(struct epbuf_handler *epbh, u32 mtu) +{ + union ep_buffer_info *info = epbh->info; + + return (info->v1i.frame_max == FJES_MTU_TO_FRAME_SIZE(mtu)); +} + +bool fjes_hw_check_vlan_id(struct epbuf_handler *epbh, u16 vlan_id) +{ + union ep_buffer_info *info = epbh->info; + bool ret = false; + int i; + + if (vlan_id == 0) { + ret = true; + } else { + for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) { + if (vlan_id == info->v1i.vlan_id[i]) { + ret = true; + break; + } + } + } + return ret; +} + +int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *epbh, + void *frame, size_t size) +{ + union ep_buffer_info *info = epbh->info; + struct esmem_frame *ring_frame; + + if (EP_RING_FULL(info->v1i.head, info->v1i.tail, info->v1i.count_max)) + return -ENOBUFS; + + ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX + (info->v1i.tail - 1, + info->v1i.count_max) * + info->v1i.frame_max]); + + ring_frame->frame_size = size; + memcpy((void *)(ring_frame->frame_data), (void *)frame, size); + + EP_RING_INDEX_INC(epbh->info->v1i.tail, info->v1i.count_max); + + return 0; +} diff --git a/drivers/net/fjes/fjes_hw.h b/drivers/net/fjes/fjes_hw.h index 9b8df55..07e1226 100644 --- a/drivers/net/fjes/fjes_hw.h +++ b/drivers/net/fjes/fjes_hw.h @@ -50,6 +50,9 @@ struct fjes_hw; #define FJES_ZONING_ZONE_TYPE_NONE (0xFF) +#define FJES_TX_DELAY_SEND_NONE (0) +#define FJES_TX_DELAY_SEND_PENDING (1) + #define FJES_RX_STOP_REQ_NONE (0x0) #define FJES_RX_STOP_REQ_DONE (0x1) #define FJES_RX_STOP_REQ_REQUEST (0x2) @@ -61,6 +64,11 @@ struct fjes_hw; #define EP_RING_NUM(buffer_size, frame_size) \ (u32)((buffer_size) / (frame_size)) +#define EP_RING_INDEX(_num, _max) (((_num) + (_max)) % (_max)) +#define EP_RING_INDEX_INC(_num, _max) \ + ((_num) = EP_RING_INDEX((_num) + 1, (_max))) +#define EP_RING_FULL(_head, _tail, _max) \ + (0 == EP_RING_INDEX(((_tail) - (_head)), (_max))) #define FJES_MTU_TO_BUFFER_SIZE(mtu) \ (ETH_HLEN + VLAN_HLEN + (mtu) + ETH_FCS_LEN) @@ -309,5 +317,9 @@ enum ep_partner_status bool fjes_hw_epid_is_same_zone(struct fjes_hw *, int); int fjes_hw_epid_is_shared(struct fjes_device_shared_info *, int); +bool fjes_hw_check_epbuf_version(struct epbuf_handler *, u32); +bool fjes_hw_check_mtu(struct epbuf_handler *, u32); +bool fjes_hw_check_vlan_id(struct epbuf_handler *, u16); +int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *, void *, size_t); #endif /* FJES_HW_H_ */ diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index bd50cbd..220ff3d 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -51,6 +51,7 @@ static int fjes_open(struct net_device *); static int fjes_close(struct net_device *); static int fjes_setup_resources(struct fjes_adapter *); static void fjes_free_resources(struct fjes_adapter *); +static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); static irqreturn_t fjes_intr(int, void*); static int fjes_acpi_add(struct acpi_device *); @@ -212,6 +213,7 @@ static void fjes_free_irq(struct fjes_adapter *adapter) static const struct net_device_ops fjes_netdev_ops = { .ndo_open = fjes_open, .ndo_stop = fjes_close, + .ndo_start_xmit = fjes_xmit_frame, }; /* fjes_open - Called when a network interface is made active */ @@ -402,6 +404,181 @@ static void fjes_free_resources(struct fjes_adapter *adapter) } } +static int fjes_tx_send(struct fjes_adapter *adapter, int dest, + void *data, size_t len) +{ + int retval; + + retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx, + data, len); + if (retval) + return retval; + + adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = + FJES_TX_DELAY_SEND_PENDING; + + retval = 0; + return retval; +} + +static netdev_tx_t +fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev) +{ + struct fjes_adapter *adapter = netdev_priv(netdev); + struct fjes_hw *hw = &adapter->hw; + + int max_epid, my_epid, dest_epid; + enum ep_partner_status pstatus; + struct netdev_queue *cur_queue; + char shortpkt[VLAN_ETH_HLEN]; + bool is_multi, vlan; + struct ethhdr *eth; + u16 queue_no = 0; + u16 vlan_id = 0; + netdev_tx_t ret; + char *data; + int len; + + ret = NETDEV_TX_OK; + is_multi = false; + cur_queue = netdev_get_tx_queue(netdev, queue_no); + + eth = (struct ethhdr *)skb->data; + my_epid = hw->my_epid; + + vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false; + + data = skb->data; + len = skb->len; + + if (is_multicast_ether_addr(eth->h_dest)) { + dest_epid = 0; + max_epid = hw->max_epid; + is_multi = true; + } else if (is_local_ether_addr(eth->h_dest)) { + dest_epid = eth->h_dest[ETH_ALEN - 1]; + max_epid = dest_epid + 1; + + if ((eth->h_dest[0] == 0x02) && + (0x00 == (eth->h_dest[1] | eth->h_dest[2] | + eth->h_dest[3] | eth->h_dest[4])) && + (dest_epid < hw->max_epid)) { + ; + } else { + dest_epid = 0; + max_epid = 0; + ret = NETDEV_TX_OK; + + adapter->stats64.tx_packets += 1; + hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; + adapter->stats64.tx_bytes += len; + hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; + } + } else { + dest_epid = 0; + max_epid = 0; + ret = NETDEV_TX_OK; + + adapter->stats64.tx_packets += 1; + hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; + adapter->stats64.tx_bytes += len; + hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; + } + + for (; dest_epid < max_epid; dest_epid++) { + if (my_epid == dest_epid) + continue; + + pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid); + if (pstatus != EP_PARTNER_SHARED) { + ret = NETDEV_TX_OK; + } else if (!fjes_hw_check_epbuf_version( + &adapter->hw.ep_shm_info[dest_epid].rx, 0)) { + /* version is NOT 0 */ + adapter->stats64.tx_carrier_errors += 1; + hw->ep_shm_info[my_epid].net_stats + .tx_carrier_errors += 1; + + ret = NETDEV_TX_OK; + } else if (!fjes_hw_check_mtu( + &adapter->hw.ep_shm_info[dest_epid].rx, + netdev->mtu)) { + adapter->stats64.tx_dropped += 1; + hw->ep_shm_info[my_epid].net_stats.tx_dropped += 1; + adapter->stats64.tx_errors += 1; + hw->ep_shm_info[my_epid].net_stats.tx_errors += 1; + + ret = NETDEV_TX_OK; + } else if (vlan && + !fjes_hw_check_vlan_id( + &adapter->hw.ep_shm_info[dest_epid].rx, + vlan_id)) { + ret = NETDEV_TX_OK; + } else { + if (len < VLAN_ETH_HLEN) { + memset(shortpkt, 0, VLAN_ETH_HLEN); + memcpy(shortpkt, skb->data, skb->len); + len = VLAN_ETH_HLEN; + data = shortpkt; + } + + if (adapter->tx_retry_count == 0) { + adapter->tx_start_jiffies = jiffies; + adapter->tx_retry_count = 1; + } else { + adapter->tx_retry_count++; + } + + if (fjes_tx_send(adapter, dest_epid, data, len)) { + if (is_multi) { + ret = NETDEV_TX_OK; + } else if ( + ((long)jiffies - + (long)adapter->tx_start_jiffies) >= + FJES_TX_RETRY_TIMEOUT) { + adapter->stats64.tx_fifo_errors += 1; + hw->ep_shm_info[my_epid].net_stats + .tx_fifo_errors += 1; + adapter->stats64.tx_errors += 1; + hw->ep_shm_info[my_epid].net_stats + .tx_errors += 1; + + ret = NETDEV_TX_OK; + } else { + netdev->trans_start = jiffies; + netif_tx_stop_queue(cur_queue); + + ret = NETDEV_TX_BUSY; + } + } else { + if (!is_multi) { + adapter->stats64.tx_packets += 1; + hw->ep_shm_info[my_epid].net_stats + .tx_packets += 1; + adapter->stats64.tx_bytes += len; + hw->ep_shm_info[my_epid].net_stats + .tx_bytes += len; + } + + adapter->tx_retry_count = 0; + ret = NETDEV_TX_OK; + } + } + } + + if (ret == NETDEV_TX_OK) { + dev_kfree_skb(skb); + if (is_multi) { + adapter->stats64.tx_packets += 1; + hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; + adapter->stats64.tx_bytes += 1; + hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; + } + } + + return ret; +} + static irqreturn_t fjes_intr(int irq, void *data) { struct fjes_adapter *adapter = data;