From cdaff1854f32ac9ddb4733530f617d32188665ed Mon Sep 17 00:00:00 2001 From: Amit Kumar Salecha Date: Mon, 1 Feb 2010 05:25:00 +0000 Subject: qlcnic: add loopback diagnostic test Loopback test (offline) added in ethtool self test. o Set device in loopback mode o Send packets o Process receive packets in qlcnic_process_rcv_ring_diag() o Compare packets o Reset device in normal mode. Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic.h | 6 +++ drivers/net/qlcnic/qlcnic_ethtool.c | 82 ++++++++++++++++++++++++++++++++++++- drivers/net/qlcnic/qlcnic_hw.c | 52 +++++++++++++++++++++++ drivers/net/qlcnic/qlcnic_init.c | 75 +++++++++++++++++++++++++++++++++ drivers/net/qlcnic/qlcnic_main.c | 20 +++++---- 5 files changed, 225 insertions(+), 10 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h index a5a67e9b5e10..b40a851ec7d1 100644 --- a/drivers/net/qlcnic/qlcnic.h +++ b/drivers/net/qlcnic/qlcnic.h @@ -897,6 +897,7 @@ struct qlcnic_mac_req { #define __QLCNIC_START_FW 4 #define QLCNIC_INTERRUPT_TEST 1 +#define QLCNIC_LOOPBACK_TEST 2 struct qlcnic_adapter { struct qlcnic_hardware_context ahw; @@ -1066,6 +1067,8 @@ int qlcnic_send_lro_cleanup(struct qlcnic_adapter *adapter); void qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter, struct qlcnic_host_tx_ring *tx_ring); int qlcnic_get_mac_addr(struct qlcnic_adapter *adapter, u64 *mac); +void qlcnic_clear_ilb_mode(struct qlcnic_adapter *adapter); +int qlcnic_set_ilb_mode(struct qlcnic_adapter *adapter); /* Functions from qlcnic_main.c */ int qlcnic_reset_context(struct qlcnic_adapter *); @@ -1073,6 +1076,9 @@ u32 qlcnic_issue_cmd(struct qlcnic_adapter *adapter, u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd); void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings); int qlcnic_diag_alloc_res(struct net_device *netdev, int test); +int qlcnic_check_loopback_buff(unsigned char *data); +netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev); +void qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring); /* * QLOGIC Board information diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c index 58c50ed791de..8da6ec8c13b9 100644 --- a/drivers/net/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/qlcnic/qlcnic_ethtool.c @@ -66,7 +66,8 @@ static const struct qlcnic_stats qlcnic_gstrings_stats[] = { static const char qlcnic_gstrings_test[][ETH_GSTRING_LEN] = { "Register_Test_on_offline", "Link_Test_on_offline", - "Interrupt_Test_offline" + "Interrupt_Test_offline", + "Loopback_Test_offline" }; #define QLCNIC_TEST_LEN ARRAY_SIZE(qlcnic_gstrings_test) @@ -614,6 +615,80 @@ static int qlcnic_get_sset_count(struct net_device *dev, int sset) } } +#define QLC_ILB_PKT_SIZE 64 + +static void qlcnic_create_loopback_buff(unsigned char *data) +{ + unsigned char random_data[] = {0xa8, 0x06, 0x45, 0x00}; + memset(data, 0x4e, QLC_ILB_PKT_SIZE); + memset(data, 0xff, 12); + memcpy(data + 12, random_data, sizeof(random_data)); +} + +int qlcnic_check_loopback_buff(unsigned char *data) +{ + unsigned char buff[QLC_ILB_PKT_SIZE]; + qlcnic_create_loopback_buff(buff); + return memcmp(data, buff, QLC_ILB_PKT_SIZE); +} + +static int qlcnic_do_ilb_test(struct qlcnic_adapter *adapter) +{ + struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; + struct qlcnic_host_sds_ring *sds_ring = &recv_ctx->sds_rings[0]; + struct sk_buff *skb; + int i; + + for (i = 0; i < 16; i++) { + skb = dev_alloc_skb(QLC_ILB_PKT_SIZE); + qlcnic_create_loopback_buff(skb->data); + skb_put(skb, QLC_ILB_PKT_SIZE); + + adapter->diag_cnt = 0; + + qlcnic_xmit_frame(skb, adapter->netdev); + + msleep(5); + + qlcnic_process_rcv_ring_diag(sds_ring); + + dev_kfree_skb_any(skb); + if (!adapter->diag_cnt) + return -1; + } + return 0; +} + +static int qlcnic_loopback_test(struct net_device *netdev) +{ + struct qlcnic_adapter *adapter = netdev_priv(netdev); + int max_sds_rings = adapter->max_sds_rings; + int ret; + + if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) + return -EIO; + + ret = qlcnic_diag_alloc_res(netdev, QLCNIC_LOOPBACK_TEST); + if (ret) + goto clear_it; + + ret = qlcnic_set_ilb_mode(adapter); + if (ret) + goto done; + + ret = qlcnic_do_ilb_test(adapter); + + qlcnic_clear_ilb_mode(adapter); + +done: + qlcnic_diag_free_res(netdev, max_sds_rings); + +clear_it: + adapter->max_sds_rings = max_sds_rings; + clear_bit(__QLCNIC_RESETTING, &adapter->state); + return ret; +} + static int qlcnic_irq_test(struct net_device *netdev) { struct qlcnic_adapter *adapter = netdev_priv(netdev); @@ -656,6 +731,11 @@ qlcnic_diag_test(struct net_device *dev, struct ethtool_test *eth_test, data[2] = qlcnic_irq_test(dev); if (data[2]) eth_test->flags |= ETH_TEST_FL_FAILED; + + data[3] = qlcnic_loopback_test(dev); + if (data[3]) + eth_test->flags |= ETH_TEST_FL_FAILED; + } data[0] = qlcnic_reg_test(dev); diff --git a/drivers/net/qlcnic/qlcnic_hw.c b/drivers/net/qlcnic/qlcnic_hw.c index 8724e561ed72..dc6cd69d6d93 100644 --- a/drivers/net/qlcnic/qlcnic_hw.c +++ b/drivers/net/qlcnic/qlcnic_hw.c @@ -1221,3 +1221,55 @@ int qlcnic_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate) return rv; } + +static int qlcnic_set_fw_loopback(struct qlcnic_adapter *adapter, u32 flag) +{ + struct qlcnic_nic_req req; + int rv; + u64 word; + + memset(&req, 0, sizeof(struct qlcnic_nic_req)); + req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23); + + word = QLCNIC_H2C_OPCODE_CONFIG_LOOPBACK | + ((u64)adapter->portnum << 16); + req.req_hdr = cpu_to_le64(word); + req.words[0] = cpu_to_le64(flag); + + rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1); + if (rv) + dev_err(&adapter->pdev->dev, + "%sting loopback mode failed.\n", + flag ? "Set" : "Reset"); + return rv; +} + +int qlcnic_set_ilb_mode(struct qlcnic_adapter *adapter) +{ + if (qlcnic_set_fw_loopback(adapter, 1)) + return -EIO; + + if (qlcnic_nic_set_promisc(adapter, + VPORT_MISS_MODE_ACCEPT_ALL)) { + qlcnic_set_fw_loopback(adapter, 0); + return -EIO; + } + + msleep(1000); + return 0; +} + +void qlcnic_clear_ilb_mode(struct qlcnic_adapter *adapter) +{ + int mode = VPORT_MISS_MODE_DROP; + struct net_device *netdev = adapter->netdev; + + qlcnic_set_fw_loopback(adapter, 0); + + if (netdev->flags & IFF_PROMISC) + mode = VPORT_MISS_MODE_ACCEPT_ALL; + else if (netdev->flags & IFF_ALLMULTI) + mode = VPORT_MISS_MODE_ACCEPT_MULTI; + + qlcnic_nic_set_promisc(adapter, mode); +} diff --git a/drivers/net/qlcnic/qlcnic_init.c b/drivers/net/qlcnic/qlcnic_init.c index 7ae8bcc1e439..ea00ab4d4feb 100644 --- a/drivers/net/qlcnic/qlcnic_init.c +++ b/drivers/net/qlcnic/qlcnic_init.c @@ -1464,3 +1464,78 @@ qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, spin_unlock(&rds_ring->lock); } +static struct qlcnic_rx_buffer * +qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, + struct qlcnic_host_sds_ring *sds_ring, + int ring, u64 sts_data0) +{ + struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; + struct qlcnic_rx_buffer *buffer; + struct sk_buff *skb; + struct qlcnic_host_rds_ring *rds_ring; + int index, length, cksum, pkt_offset; + + if (unlikely(ring >= adapter->max_rds_rings)) + return NULL; + + rds_ring = &recv_ctx->rds_rings[ring]; + + index = qlcnic_get_sts_refhandle(sts_data0); + if (unlikely(index >= rds_ring->num_desc)) + return NULL; + + buffer = &rds_ring->rx_buf_arr[index]; + + length = qlcnic_get_sts_totallength(sts_data0); + cksum = qlcnic_get_sts_status(sts_data0); + pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); + + skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); + if (!skb) + return buffer; + + skb_put(skb, rds_ring->skb_size); + + if (pkt_offset) + skb_pull(skb, pkt_offset); + + skb->truesize = skb->len + sizeof(struct sk_buff); + + if (!qlcnic_check_loopback_buff(skb->data)) + adapter->diag_cnt++; + + dev_kfree_skb_any(skb); + + return buffer; +} + +void +qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) +{ + struct qlcnic_adapter *adapter = sds_ring->adapter; + struct status_desc *desc; + struct qlcnic_rx_buffer *rxbuf; + u64 sts_data0; + + int opcode, ring, desc_cnt; + u32 consumer = sds_ring->consumer; + + desc = &sds_ring->desc_head[consumer]; + sts_data0 = le64_to_cpu(desc->status_desc_data[0]); + + if (!(sts_data0 & STATUS_OWNER_HOST)) + return; + + desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); + opcode = qlcnic_get_sts_opcode(sts_data0); + + ring = qlcnic_get_sts_type(sts_data0); + rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring, + ring, sts_data0); + + desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); + consumer = get_next_index(consumer, sds_ring->num_desc); + + sds_ring->consumer = consumer; + writel(consumer, sds_ring->crb_sts_consumer); +} diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c index a8b07120d362..665e8e56b6a8 100644 --- a/drivers/net/qlcnic/qlcnic_main.c +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -65,8 +65,6 @@ static int __devinit qlcnic_probe(struct pci_dev *pdev, static void __devexit qlcnic_remove(struct pci_dev *pdev); static int qlcnic_open(struct net_device *netdev); static int qlcnic_close(struct net_device *netdev); -static netdev_tx_t qlcnic_xmit_frame(struct sk_buff *, - struct net_device *); static void qlcnic_tx_timeout(struct net_device *netdev); static void qlcnic_tx_timeout_task(struct work_struct *work); static void qlcnic_attach_work(struct work_struct *work); @@ -937,9 +935,11 @@ void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings) struct qlcnic_host_sds_ring *sds_ring; int ring; - for (ring = 0; ring < adapter->max_sds_rings; ring++) { - sds_ring = &adapter->recv_ctx.sds_rings[ring]; - qlcnic_disable_int(sds_ring); + if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) { + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &adapter->recv_ctx.sds_rings[ring]; + qlcnic_disable_int(sds_ring); + } } qlcnic_detach(adapter); @@ -977,9 +977,11 @@ int qlcnic_diag_alloc_res(struct net_device *netdev, int test) if (ret) return ret; - for (ring = 0; ring < adapter->max_sds_rings; ring++) { - sds_ring = &adapter->recv_ctx.sds_rings[ring]; - qlcnic_enable_int(sds_ring); + if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) { + for (ring = 0; ring < adapter->max_sds_rings; ring++) { + sds_ring = &adapter->recv_ctx.sds_rings[ring]; + qlcnic_enable_int(sds_ring); + } } return 0; @@ -1549,7 +1551,7 @@ qlcnic_clear_cmddesc(u64 *desc) desc[2] = 0ULL; } -static netdev_tx_t +netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) { struct qlcnic_adapter *adapter = netdev_priv(netdev); -- cgit v1.2.3