From f853053da9754d488c43ede24485881ac929c8d9 Mon Sep 17 00:00:00 2001 From: Nilesh Javali Date: Wed, 21 Nov 2018 01:25:16 -0800 Subject: scsi: qedi: Fix spelling mistake "OUSTANDING" -> "OUTSTANDING" Fix trivial spelling mistake within macro definition. Signed-off-by: Nilesh Javali Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 105b0e4d7818..0f8eb5f63716 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -796,7 +796,7 @@ static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) int rval = 0; - num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; + num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); -- cgit From fa97c51109867c17b91ff01bc21f99d20e446968 Mon Sep 17 00:00:00 2001 From: Nilesh Javali Date: Wed, 21 Nov 2018 01:25:17 -0800 Subject: scsi: qedi: Replace PAGE_SIZE with QEDI_PAGE_SIZE Use QEDI_PAGE_SIZE for enablement of module on systems with 64K page size. Signed-off-by: Nilesh Javali Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 0f8eb5f63716..a1225aeac6fa 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -796,7 +796,7 @@ static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) int rval = 0; - num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; + num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); @@ -834,7 +834,7 @@ static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { - if ((1 << log_page_size) == PAGE_SIZE) + if ((1 << log_page_size) == QEDI_PAGE_SIZE) break; } qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; @@ -1376,7 +1376,7 @@ static void qedi_free_bdq(struct qedi_ctx *qedi) int i; if (qedi->bdq_pbl_list) - dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, + dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); if (qedi->bdq_pbl) @@ -1437,7 +1437,7 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi) /* Alloc dma memory for BDQ page buffer list */ qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); - qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); + qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", @@ -1472,7 +1472,8 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi) } /* Allocate list of PBL pages */ - qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, PAGE_SIZE, + qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, + QEDI_PAGE_SIZE, &qedi->bdq_pbl_list_dma, GFP_KERNEL); if (!qedi->bdq_pbl_list) { @@ -1485,13 +1486,14 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi) * Now populate PBL list with pages that contain pointers to the * individual buffers. */ - qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; + qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / + QEDI_PAGE_SIZE; list = (u64 *)qedi->bdq_pbl_list; page = qedi->bdq_pbl_list_dma; for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { *list = qedi->bdq_pbl_dma; list++; - page += PAGE_SIZE; + page += QEDI_PAGE_SIZE; } return 0; -- cgit From 1a291bce5eaf5374627d337157544aa6499ce34a Mon Sep 17 00:00:00 2001 From: Nilesh Javali Date: Wed, 21 Nov 2018 01:25:18 -0800 Subject: scsi: qedi: Allocate IRQs based on msix_cnt The driver load on some systems failed with error, [0004:01:00.5]:[qedi_request_msix_irq:2524]:8: request_irq failed. Allocate the IRQs based on MSIX count obtained from qed module instead of number of queues. Signed-off-by: Nilesh Javali Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index a1225aeac6fa..5308e6b3a574 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -1298,7 +1298,7 @@ static int qedi_request_msix_irq(struct qedi_ctx *qedi) int i, rc, cpu; cpu = cpumask_first(cpu_online_mask); - for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { + for (i = 0; i < qedi->int_info.msix_cnt; i++) { rc = request_irq(qedi->int_info.msix[i].vector, qedi_msix_handler, 0, "qedi", &qedi->fp_array[i]); -- cgit From d5632b11f0a17efa6356311e535ae135d178438d Mon Sep 17 00:00:00 2001 From: Manish Rangankar Date: Wed, 21 Nov 2018 01:25:19 -0800 Subject: scsi: qedi: Check for session online before getting iSCSI TLV data. The kernel panic was observed after switch side perturbation, BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] strcmp+0x20/0x40 PGD 0 Oops: 0000 [#1] SMP CPU: 8 PID: 647 Comm: kworker/8:1 Tainted: G W OE ------------ 3.10.0-693.el7.x86_64 #1 Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 06/20/2018 Workqueue: slowpath-13:00. qed_slowpath_task [qed] task: ffff880429eb8fd0 ti: ffff880429190000 task.ti: ffff880429190000 RIP: 0010:[] [] strcmp+0x20/0x40 RSP: 0018:ffff880429193c68 EFLAGS: 00010202 RAX: 000000000000000a RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88042bda7a41 RBP: ffff880429193c68 R08: 000000000000ffff R09: 000000000000ffff R10: 0000000000000007 R11: ffff88042b3af338 R12: ffff880420b007a0 R13: ffff88081aa56af8 R14: 0000000000000001 R15: ffff88081aa50410 FS: 0000000000000000(0000) GS:ffff88042fe00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000019f2000 CR4: 00000000003407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff880429193d20 ffffffffc02a0c90 ffffc90004b32000 ffff8803fd3ec600 ffff88042bda7800 ffff88042bda7a00 ffff88042bda7840 ffff88042bda7a40 0000000129193d10 2e3836312e323931 ff000a342e363232 ffffffffc01ad99d Call Trace: [] qedi_get_protocol_tlv_data+0x270/0x470 [qedi] [] ? qed_mfw_process_tlv_req+0x24d/0xbf0 [qed] [] qed_mfw_fill_tlv_data+0x5e/0xd0 [qed] [] qed_mfw_process_tlv_req+0x269/0xbf0 [qed] Fix kernel NULL pointer deref by checking for session is online before getting iSCSI TLV data. Signed-off-by: Manish Rangankar Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 5308e6b3a574..713db9cfae7f 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -952,6 +952,9 @@ static int qedi_find_boot_info(struct qedi_ctx *qedi, cls_sess = iscsi_conn_to_session(cls_conn); sess = cls_sess->dd_data; + if (!iscsi_is_session_online(cls_sess)) + continue; + if (pri_ctrl_flags) { if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { -- cgit From cdd3ff87f10813e42ef6573a1c92a91a9fc24709 Mon Sep 17 00:00:00 2001 From: Manish Rangankar Date: Wed, 21 Nov 2018 01:25:20 -0800 Subject: scsi: qedi: Add packet filter in light L2 Rx path. Add packet filter to avoid unnecessary packet processing in iscsiuio. Signed-off-by: Manish Rangankar Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 713db9cfae7f..2621deeed0cd 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -659,6 +659,7 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) struct qedi_uio_dev *udev; struct qedi_uio_ctrl *uctrl; struct skb_work_list *work; + struct ethhdr *eh; u32 prod; if (!qedi) { @@ -673,6 +674,29 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) return 0; } + eh = (struct ethhdr *)skb->data; + /* Undo VLAN encapsulation */ + if (eh->h_proto == htons(ETH_P_8021Q)) { + memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); + eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); + skb_reset_mac_header(skb); + } + + /* Filter out non FIP/FCoE frames here to free them faster */ + if (eh->h_proto != htons(ETH_P_ARP) && + eh->h_proto != htons(ETH_P_IP) && + eh->h_proto != htons(ETH_P_IPV6)) { + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, + "Dropping frame ethertype [0x%x] len [0x%x].\n", + eh->h_proto, skb->len); + kfree_skb(skb); + return 0; + } + + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, + "Allowed frame ethertype [0x%x] len [0x%x].\n", + eh->h_proto, skb->len); + udev = qedi->udev; uctrl = udev->uctrl; -- cgit From dcceeeb71fb7f927e609175dfd76bcdf0f44abc2 Mon Sep 17 00:00:00 2001 From: Nilesh Javali Date: Wed, 21 Nov 2018 01:25:21 -0800 Subject: scsi: qedi: add module param to set ping packet size Default packet size is 0x400. For jumbo packets set to 0x2400. Signed-off-by: Nilesh Javali Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 2621deeed0cd..8942f62d66d7 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -44,6 +44,11 @@ module_param(qedi_io_tracing, uint, 0644); MODULE_PARM_DESC(qedi_io_tracing, " Enable logging of SCSI requests/completions into trace buffer. (default off)."); +uint qedi_ll2_buf_size = 0x400; +module_param(qedi_ll2_buf_size, uint, 0644); +MODULE_PARM_DESC(qedi_ll2_buf_size, + "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); + const struct qed_iscsi_ops *qedi_ops; static struct scsi_transport_template *qedi_scsi_transport; static struct pci_driver qedi_pci_driver; @@ -228,7 +233,7 @@ static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) } /* Allocating memory for Tx/Rx pkt buffer */ - udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE; + udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | __GFP_ZERO, 2); @@ -283,7 +288,7 @@ static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) qedi->udev = udev; udev->tx_pkt = udev->ll2_buf; - udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE; + udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; return 0; err_uctrl: @@ -752,8 +757,8 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, udev = qedi->udev; uctrl = udev->uctrl; - pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE); - len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE); + pkt = udev->rx_pkt + (uctrl->hw_rx_prod * qedi_ll2_buf_size); + len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); memcpy(pkt, skb->data, len); memset(&rxbd, 0, sizeof(rxbd)); -- cgit From 9632a6b4b747ae6550f0877bfc7db7fec45bbee4 Mon Sep 17 00:00:00 2001 From: Manish Rangankar Date: Wed, 21 Nov 2018 01:25:22 -0800 Subject: scsi: qedi: Move LL2 producer index processing in BH. 1. Removed logic to update HW producer index in interrupt context. 2. Update HW producer index after UIO ring and buffer gets initialized. Signed-off-by: Manish Rangankar Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen --- drivers/scsi/qedi/qedi_main.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) (limited to 'drivers/scsi/qedi/qedi_main.c') diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 8942f62d66d7..053a94771a91 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -665,7 +665,6 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) struct qedi_uio_ctrl *uctrl; struct skb_work_list *work; struct ethhdr *eh; - u32 prod; if (!qedi) { QEDI_ERR(NULL, "qedi is NULL\n"); @@ -724,17 +723,10 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) spin_lock_bh(&qedi->ll2_lock); list_add_tail(&work->list, &qedi->ll2_skb_list); + spin_unlock_bh(&qedi->ll2_lock); - ++uctrl->hw_rx_prod_cnt; - prod = (uctrl->hw_rx_prod + 1) % RX_RING; - if (prod != uctrl->host_rx_cons) { - uctrl->hw_rx_prod = prod; - spin_unlock_bh(&qedi->ll2_lock); - wake_up_process(qedi->ll2_recv_thread); - return 0; - } + wake_up_process(qedi->ll2_recv_thread); - spin_unlock_bh(&qedi->ll2_lock); return 0; } @@ -749,6 +741,7 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, u32 rx_bd_prod; void *pkt; int len = 0; + u32 prod; if (!qedi) { QEDI_ERR(NULL, "qedi is NULL\n"); @@ -757,12 +750,16 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, udev = qedi->udev; uctrl = udev->uctrl; - pkt = udev->rx_pkt + (uctrl->hw_rx_prod * qedi_ll2_buf_size); + + ++uctrl->hw_rx_prod_cnt; + prod = (uctrl->hw_rx_prod + 1) % RX_RING; + + pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); memcpy(pkt, skb->data, len); memset(&rxbd, 0, sizeof(rxbd)); - rxbd.rx_pkt_index = uctrl->hw_rx_prod; + rxbd.rx_pkt_index = prod; rxbd.rx_pkt_len = len; rxbd.vlan_id = vlan_id; @@ -773,6 +770,16 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, memcpy(p_rxbd, &rxbd, sizeof(rxbd)); + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, + "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", + uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, + rxbd.rx_pkt_index, rxbd.rx_pkt_len); + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, + "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", + uctrl->host_rx_cons, uctrl->host_rx_bd_cons); + + uctrl->hw_rx_prod = prod; + /* notify the iscsiuio about new packet */ uio_event_notify(&udev->qedi_uinfo); -- cgit