From e1a897ef4e9e633b8ad657063799707aa2d818a8 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 14 Nov 2024 17:53:40 -0800 Subject: eth: fbnic: add missing SPDX headers Paolo noticed that we are missing SPDX headers, add them. Reviewed-by: Andrew Lunn Reviewed-by: Kalesh AP Link: https://patch.msgid.link/20241115015344.757567-2-kuba@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c | 3 +++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c | 3 +++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h | 3 +++ 3 files changed, 9 insertions(+) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c index 354b5397815f..589cc7c2ee52 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c @@ -1,3 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) Meta Platforms, Inc. and affiliates. */ + #include #include #include diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c index a0acc7606aa1..b3f8dc299b29 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c @@ -1,3 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) Meta Platforms, Inc. and affiliates. */ + #include "fbnic.h" u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h index 30348904b510..a2b6e88fc113 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h @@ -1,3 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) Meta Platforms, Inc. and affiliates. */ + #include #include "fbnic_csr.h" -- cgit v1.2.3 From 2a0d6c1705c42b81efd927f0bad91e68245dba7f Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 14 Nov 2024 17:53:41 -0800 Subject: eth: fbnic: add missing header guards While adding the SPDX headers I noticed we're also missing a header guard. Reviewed-by: Andrew Lunn Reviewed-by: Kalesh AP Link: https://patch.msgid.link/20241115015344.757567-3-kuba@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h index a2b6e88fc113..199ad2228ee9 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h @@ -1,6 +1,9 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) Meta Platforms, Inc. and affiliates. */ +#ifndef _FBNIC_HW_STATS_H_ +#define _FBNIC_HW_STATS_H_ + #include #include "fbnic_csr.h" @@ -41,3 +44,5 @@ struct fbnic_hw_stats { u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset); void fbnic_get_hw_stats(struct fbnic_dev *fbd); + +#endif /* _FBNIC_HW_STATS_H_ */ -- cgit v1.2.3 From 08606cb528bed9f265ea8a99b0c310f3eba0ca89 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 14 Nov 2024 17:53:42 -0800 Subject: eth: fbnic: add basic debugfs structure Add the usual debugfs structure: fbnic/ $pci-id/ device-fileA device-fileB This patch only adds the directories, subsequent changes will add files. Reviewed-by: Andrew Lunn Reviewed-by: Kalesh AP Link: https://patch.msgid.link/20241115015344.757567-4-kuba@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/meta/fbnic/Makefile | 1 + drivers/net/ethernet/meta/fbnic/fbnic.h | 6 +++++ drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c | 34 +++++++++++++++++++++++++ drivers/net/ethernet/meta/fbnic/fbnic_pci.c | 10 +++++++- 4 files changed, 50 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c diff --git a/drivers/net/ethernet/meta/fbnic/Makefile b/drivers/net/ethernet/meta/fbnic/Makefile index 425e8b801265..239b2258ec65 100644 --- a/drivers/net/ethernet/meta/fbnic/Makefile +++ b/drivers/net/ethernet/meta/fbnic/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_FBNIC) += fbnic.o fbnic-y := fbnic_csr.o \ + fbnic_debugfs.o \ fbnic_devlink.o \ fbnic_ethtool.o \ fbnic_fw.o \ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic.h b/drivers/net/ethernet/meta/fbnic/fbnic.h index 98870cb2b689..706ae6104c8e 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic.h @@ -19,6 +19,7 @@ struct fbnic_dev { struct device *dev; struct net_device *netdev; + struct dentry *dbg_fbd; struct device *hwmon; u32 __iomem *uc_addr0; @@ -156,6 +157,11 @@ int fbnic_alloc_irqs(struct fbnic_dev *fbd); void fbnic_get_fw_ver_commit_str(struct fbnic_dev *fbd, char *fw_version, const size_t str_sz); +void fbnic_dbg_fbd_init(struct fbnic_dev *fbd); +void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd); +void fbnic_dbg_init(void); +void fbnic_dbg_exit(void); + void fbnic_csr_get_regs(struct fbnic_dev *fbd, u32 *data, u32 *regs_version); int fbnic_csr_regs_len(struct fbnic_dev *fbd); diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c new file mode 100644 index 000000000000..183c7c4914dc --- /dev/null +++ b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) Meta Platforms, Inc. and affiliates. */ + +#include +#include + +#include "fbnic.h" + +static struct dentry *fbnic_dbg_root; + +void fbnic_dbg_fbd_init(struct fbnic_dev *fbd) +{ + struct pci_dev *pdev = to_pci_dev(fbd->dev); + const char *name = pci_name(pdev); + + fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root); +} + +void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd) +{ + debugfs_remove_recursive(fbd->dbg_fbd); + fbd->dbg_fbd = NULL; +} + +void fbnic_dbg_init(void) +{ + fbnic_dbg_root = debugfs_create_dir(fbnic_driver_name, NULL); +} + +void fbnic_dbg_exit(void) +{ + debugfs_remove_recursive(fbnic_dbg_root); + fbnic_dbg_root = NULL; +} diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c index 2de5a6fde7e8..669ae39f3ac1 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c @@ -288,6 +288,7 @@ static int fbnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } fbnic_devlink_register(fbd); + fbnic_dbg_fbd_init(fbd); fbnic_hwmon_register(fbd); @@ -355,6 +356,7 @@ static void fbnic_remove(struct pci_dev *pdev) } fbnic_hwmon_unregister(fbd); + fbnic_dbg_fbd_exit(fbd); fbnic_devlink_unregister(fbd); fbnic_fw_disable_mbx(fbd); fbnic_free_irqs(fbd); @@ -552,9 +554,13 @@ static int __init fbnic_init_module(void) { int err; + fbnic_dbg_init(); + err = pci_register_driver(&fbnic_driver); - if (err) + if (err) { + fbnic_dbg_exit(); goto out; + } pr_info(DRV_SUMMARY " (%s)", fbnic_driver.name); out: @@ -570,5 +576,7 @@ module_init(fbnic_init_module); static void __exit fbnic_exit_module(void) { pci_unregister_driver(&fbnic_driver); + + fbnic_dbg_exit(); } module_exit(fbnic_exit_module); -- cgit v1.2.3 From 25ba596d137db208ace697e3adc7cc35b3b2882b Mon Sep 17 00:00:00 2001 From: Sanman Pradhan Date: Thu, 14 Nov 2024 17:53:43 -0800 Subject: eth: fbnic: add PCIe hardware statistics Add PCIe hardware statistics support to the fbnic driver. These stats provide insight into PCIe transaction performance and error conditions. Which includes, read/write and completion TLP counts and DWORD counts and debug counters for tag, completion credit and NP credit exhaustion The stats are exposed via debugfs and can be used to monitor PCIe performance and debug PCIe issues. Signed-off-by: Sanman Pradhan Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20241115015344.757567-5-kuba@kernel.org Signed-off-by: Jakub Kicinski --- .../device_drivers/ethernet/meta/fbnic.rst | 30 ++++++ drivers/net/ethernet/meta/fbnic/fbnic_csr.h | 37 +++++++ drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c | 34 ++++++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c | 114 +++++++++++++++++++++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h | 12 +++ drivers/net/ethernet/meta/fbnic/fbnic_pci.c | 4 + 6 files changed, 231 insertions(+) diff --git a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst index 32ff114f5c26..14f2834d86d1 100644 --- a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst +++ b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst @@ -27,3 +27,33 @@ driver takes over. devlink dev info provides version information for all three components. In addition to the version the hg commit hash of the build is included as a separate entry. + +Statistics +---------- + +PCIe +~~~~ + +The fbnic driver exposes PCIe hardware performance statistics through debugfs +(``pcie_stats``). These statistics provide insights into PCIe transaction +behavior and potential performance bottlenecks. + +1. PCIe Transaction Counters: + + These counters track PCIe transaction activity: + - ``pcie_ob_rd_tlp``: Outbound read Transaction Layer Packets count + - ``pcie_ob_rd_dword``: DWORDs transferred in outbound read transactions + - ``pcie_ob_wr_tlp``: Outbound write Transaction Layer Packets count + - ``pcie_ob_wr_dword``: DWORDs transferred in outbound write + transactions + - ``pcie_ob_cpl_tlp``: Outbound completion TLP count + - ``pcie_ob_cpl_dword``: DWORDs transferred in outbound completion TLPs + +2. PCIe Resource Monitoring: + + These counters indicate PCIe resource exhaustion events: + - ``pcie_ob_rd_no_tag``: Read requests dropped due to tag unavailability + - ``pcie_ob_rd_no_cpl_cred``: Read requests dropped due to completion + credit exhaustion + - ``pcie_ob_rd_no_np_cred``: Read requests dropped due to non-posted + credit exhaustion diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h index f9a531ce9e17..dac9a4879e52 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h @@ -918,6 +918,43 @@ enum { #define FBNIC_MAX_QUEUES 128 #define FBNIC_CSR_END_QUEUE (0x40000 + 0x400 * FBNIC_MAX_QUEUES - 1) +/* PUL User Registers*/ +#define FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0 \ + 0x3106e /* 0xc41b8 */ +#define FBNIC_PUL_USER_OB_RD_DWORD_CNT_31_0 \ + 0x31070 /* 0xc41c0 */ +#define FBNIC_PUL_USER_OB_RD_DWORD_CNT_63_32 \ + 0x31071 /* 0xc41c4 */ +#define FBNIC_PUL_USER_OB_WR_TLP_CNT_31_0 \ + 0x31072 /* 0xc41c8 */ +#define FBNIC_PUL_USER_OB_WR_TLP_CNT_63_32 \ + 0x31073 /* 0xc41cc */ +#define FBNIC_PUL_USER_OB_WR_DWORD_CNT_31_0 \ + 0x31074 /* 0xc41d0 */ +#define FBNIC_PUL_USER_OB_WR_DWORD_CNT_63_32 \ + 0x31075 /* 0xc41d4 */ +#define FBNIC_PUL_USER_OB_CPL_TLP_CNT_31_0 \ + 0x31076 /* 0xc41d8 */ +#define FBNIC_PUL_USER_OB_CPL_TLP_CNT_63_32 \ + 0x31077 /* 0xc41dc */ +#define FBNIC_PUL_USER_OB_CPL_DWORD_CNT_31_0 \ + 0x31078 /* 0xc41e0 */ +#define FBNIC_PUL_USER_OB_CPL_DWORD_CNT_63_32 \ + 0x31079 /* 0xc41e4 */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_31_0 \ + 0x3107a /* 0xc41e8 */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_63_32 \ + 0x3107b /* 0xc41ec */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_31_0 \ + 0x3107c /* 0xc41f0 */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_63_32 \ + 0x3107d /* 0xc41f4 */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_31_0 \ + 0x3107e /* 0xc41f8 */ +#define FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_63_32 \ + 0x3107f /* 0xc41fc */ +#define FBNIC_CSR_END_PUL_USER 0x31080 /* CSR section delimiter */ + /* BAR 4 CSRs */ /* The IPC mailbox consists of 32 mailboxes, with each mailbox consisting diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c index 183c7c4914dc..59951b5abdb7 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c @@ -3,17 +3,51 @@ #include #include +#include +#include #include "fbnic.h" static struct dentry *fbnic_dbg_root; +static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v) +{ + struct fbnic_dev *fbd = s->private; + + rtnl_lock(); + fbnic_get_hw_stats(fbd); + + seq_printf(s, "ob_rd_tlp: %llu\n", fbd->hw_stats.pcie.ob_rd_tlp.value); + seq_printf(s, "ob_rd_dword: %llu\n", + fbd->hw_stats.pcie.ob_rd_dword.value); + seq_printf(s, "ob_wr_tlp: %llu\n", fbd->hw_stats.pcie.ob_wr_tlp.value); + seq_printf(s, "ob_wr_dword: %llu\n", + fbd->hw_stats.pcie.ob_wr_dword.value); + seq_printf(s, "ob_cpl_tlp: %llu\n", + fbd->hw_stats.pcie.ob_cpl_tlp.value); + seq_printf(s, "ob_cpl_dword: %llu\n", + fbd->hw_stats.pcie.ob_cpl_dword.value); + seq_printf(s, "ob_rd_no_tag: %llu\n", + fbd->hw_stats.pcie.ob_rd_no_tag.value); + seq_printf(s, "ob_rd_no_cpl_cred: %llu\n", + fbd->hw_stats.pcie.ob_rd_no_cpl_cred.value); + seq_printf(s, "ob_rd_no_np_cred: %llu\n", + fbd->hw_stats.pcie.ob_rd_no_np_cred.value); + rtnl_unlock(); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_pcie_stats); + void fbnic_dbg_fbd_init(struct fbnic_dev *fbd) { struct pci_dev *pdev = to_pci_dev(fbd->dev); const char *name = pci_name(pdev); fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root); + debugfs_create_file("pcie_stats", 0400, fbd->dbg_fbd, fbd, + &fbnic_dbg_pcie_stats_fops); } void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c index b3f8dc299b29..c391f2155054 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c @@ -28,3 +28,117 @@ u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset) */ return ((u64)upper << 32); } + +static void fbnic_hw_stat_rst64(struct fbnic_dev *fbd, u32 reg, s32 offset, + struct fbnic_stat_counter *stat) +{ + /* Record initial counter values and compute deltas from there to ensure + * stats start at 0 after reboot/reset. This avoids exposing absolute + * hardware counter values to userspace. + */ + stat->u.old_reg_value_64 = fbnic_stat_rd64(fbd, reg, offset); +} + +static void fbnic_hw_stat_rd64(struct fbnic_dev *fbd, u32 reg, s32 offset, + struct fbnic_stat_counter *stat) +{ + u64 new_reg_value; + + new_reg_value = fbnic_stat_rd64(fbd, reg, offset); + stat->value += new_reg_value - stat->u.old_reg_value_64; + stat->u.old_reg_value_64 = new_reg_value; +} + +static void fbnic_reset_pcie_stats_asic(struct fbnic_dev *fbd, + struct fbnic_pcie_stats *pcie) +{ + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0, + 1, + &pcie->ob_rd_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DWORD_CNT_31_0, + 1, + &pcie->ob_rd_dword); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_CPL_TLP_CNT_31_0, + 1, + &pcie->ob_cpl_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_CPL_DWORD_CNT_31_0, + 1, + &pcie->ob_cpl_dword); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_WR_TLP_CNT_31_0, + 1, + &pcie->ob_wr_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_WR_DWORD_CNT_31_0, + 1, + &pcie->ob_wr_dword); + + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_31_0, + 1, + &pcie->ob_rd_no_tag); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_31_0, + 1, + &pcie->ob_rd_no_cpl_cred); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_31_0, + 1, + &pcie->ob_rd_no_np_cred); +} + +static void fbnic_get_pcie_stats_asic64(struct fbnic_dev *fbd, + struct fbnic_pcie_stats *pcie) +{ + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0, + 1, + &pcie->ob_rd_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DWORD_CNT_31_0, + 1, + &pcie->ob_rd_dword); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_WR_TLP_CNT_31_0, + 1, + &pcie->ob_wr_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_WR_DWORD_CNT_31_0, + 1, + &pcie->ob_wr_dword); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_CPL_TLP_CNT_31_0, + 1, + &pcie->ob_cpl_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_CPL_DWORD_CNT_31_0, + 1, + &pcie->ob_cpl_dword); + + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_31_0, + 1, + &pcie->ob_rd_no_tag); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_31_0, + 1, + &pcie->ob_rd_no_cpl_cred); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_31_0, + 1, + &pcie->ob_rd_no_np_cred); +} + +void fbnic_reset_hw_stats(struct fbnic_dev *fbd) +{ + fbnic_reset_pcie_stats_asic(fbd, &fbd->hw_stats.pcie); +} + +void fbnic_get_hw_stats(struct fbnic_dev *fbd) +{ + fbnic_get_pcie_stats_asic64(fbd, &fbd->hw_stats.pcie); +} diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h index 199ad2228ee9..b152c6b1b4ab 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h @@ -37,12 +37,24 @@ struct fbnic_mac_stats { struct fbnic_eth_mac_stats eth_mac; }; +struct fbnic_pcie_stats { + struct fbnic_stat_counter ob_rd_tlp, ob_rd_dword; + struct fbnic_stat_counter ob_wr_tlp, ob_wr_dword; + struct fbnic_stat_counter ob_cpl_tlp, ob_cpl_dword; + + struct fbnic_stat_counter ob_rd_no_tag; + struct fbnic_stat_counter ob_rd_no_cpl_cred; + struct fbnic_stat_counter ob_rd_no_np_cred; +}; + struct fbnic_hw_stats { struct fbnic_mac_stats mac; + struct fbnic_pcie_stats pcie; }; u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset); +void fbnic_reset_hw_stats(struct fbnic_dev *fbd); void fbnic_get_hw_stats(struct fbnic_dev *fbd); #endif /* _FBNIC_HW_STATS_H_ */ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c index 669ae39f3ac1..f913a87c78a2 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c @@ -9,6 +9,7 @@ #include "fbnic.h" #include "fbnic_drvinfo.h" +#include "fbnic_hw_stats.h" #include "fbnic_netdev.h" char fbnic_driver_name[] = DRV_NAME; @@ -290,6 +291,9 @@ static int fbnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fbnic_devlink_register(fbd); fbnic_dbg_fbd_init(fbd); + /* Capture snapshot of hardware stats so netdev can calculate delta */ + fbnic_reset_hw_stats(fbd); + fbnic_hwmon_register(fbd); if (!fbd->dsn) { -- cgit v1.2.3 From 79da2aaa08ee9980ac3f750f8b3d3db389714257 Mon Sep 17 00:00:00 2001 From: Sanman Pradhan Date: Thu, 14 Nov 2024 17:53:44 -0800 Subject: eth: fbnic: add RPC hardware statistics Report Rx parser statistics via ethtool -S. The parser stats are 32b, so we need to add refresh to the service task to make sure we don't miss overflows. Signed-off-by: Sanman Pradhan Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20241115015344.757567-6-kuba@kernel.org Signed-off-by: Jakub Kicinski --- .../device_drivers/ethernet/meta/fbnic.rst | 13 ++++ drivers/net/ethernet/meta/fbnic/fbnic_csr.h | 10 +++ drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c | 71 ++++++++++++++++++++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c | 76 ++++++++++++++++++++++ drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h | 8 +++ drivers/net/ethernet/meta/fbnic/fbnic_pci.c | 2 + 6 files changed, 180 insertions(+) diff --git a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst index 14f2834d86d1..04e0595bb0a7 100644 --- a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst +++ b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst @@ -31,6 +31,19 @@ separate entry. Statistics ---------- +RPC (Rx parser) +~~~~~~~~~~~~~~~ + + - ``rpc_unkn_etype``: frames containing unknown EtherType + - ``rpc_unkn_ext_hdr``: frames containing unknown IPv6 extension header + - ``rpc_ipv4_frag``: frames containing IPv4 fragment + - ``rpc_ipv6_frag``: frames containing IPv6 fragment + - ``rpc_ipv4_esp``: frames with IPv4 ESP encapsulation + - ``rpc_ipv6_esp``: frames with IPv6 ESP encapsulation + - ``rpc_tcp_opt_err``: frames which encountered TCP option parsing error + - ``rpc_out_of_hdr_err``: frames where header was larger than parsable region + - ``ovr_size_err``: oversized frames + PCIe ~~~~ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h index dac9a4879e52..02bb81b3c506 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h @@ -638,6 +638,16 @@ enum { FBNIC_RPC_RSS_KEY_DWORD_LEN * 32 - \ FBNIC_RPC_RSS_KEY_BIT_LEN) +#define FBNIC_RPC_CNTR_TCP_OPT_ERR 0x0849e /* 0x21278 */ +#define FBNIC_RPC_CNTR_UNKN_ETYPE 0x0849f /* 0x2127c */ +#define FBNIC_RPC_CNTR_IPV4_FRAG 0x084a0 /* 0x21280 */ +#define FBNIC_RPC_CNTR_IPV6_FRAG 0x084a1 /* 0x21284 */ +#define FBNIC_RPC_CNTR_IPV4_ESP 0x084a2 /* 0x21288 */ +#define FBNIC_RPC_CNTR_IPV6_ESP 0x084a3 /* 0x2128c */ +#define FBNIC_RPC_CNTR_UNKN_EXT_HDR 0x084a4 /* 0x21290 */ +#define FBNIC_RPC_CNTR_OUT_OF_HDR_ERR 0x084a5 /* 0x21294 */ +#define FBNIC_RPC_CNTR_OVR_SIZE_ERR 0x084a6 /* 0x21298 */ + #define FBNIC_RPC_TCAM_MACDA_VALIDATE 0x0852d /* 0x214b4 */ #define FBNIC_CSR_END_RPC 0x0856b /* CSR section delimiter */ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c index 589cc7c2ee52..cc8ca94529ca 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c @@ -9,6 +9,37 @@ #include "fbnic_netdev.h" #include "fbnic_tlv.h" +struct fbnic_stat { + u8 string[ETH_GSTRING_LEN]; + unsigned int size; + unsigned int offset; +}; + +#define FBNIC_STAT_FIELDS(type, name, stat) { \ + .string = name, \ + .size = sizeof_field(struct type, stat), \ + .offset = offsetof(struct type, stat), \ +} + +/* Hardware statistics not captured in rtnl_link_stats */ +#define FBNIC_HW_STAT(name, stat) \ + FBNIC_STAT_FIELDS(fbnic_hw_stats, name, stat) + +static const struct fbnic_stat fbnic_gstrings_hw_stats[] = { + /* RPC */ + FBNIC_HW_STAT("rpc_unkn_etype", rpc.unkn_etype), + FBNIC_HW_STAT("rpc_unkn_ext_hdr", rpc.unkn_ext_hdr), + FBNIC_HW_STAT("rpc_ipv4_frag", rpc.ipv4_frag), + FBNIC_HW_STAT("rpc_ipv6_frag", rpc.ipv6_frag), + FBNIC_HW_STAT("rpc_ipv4_esp", rpc.ipv4_esp), + FBNIC_HW_STAT("rpc_ipv6_esp", rpc.ipv6_esp), + FBNIC_HW_STAT("rpc_tcp_opt_err", rpc.tcp_opt_err), + FBNIC_HW_STAT("rpc_out_of_hdr_err", rpc.out_of_hdr_err), +}; + +#define FBNIC_HW_FIXED_STATS_LEN ARRAY_SIZE(fbnic_gstrings_hw_stats) +#define FBNIC_HW_STATS_LEN FBNIC_HW_FIXED_STATS_LEN + static int fbnic_get_ts_info(struct net_device *netdev, struct kernel_ethtool_ts_info *tsinfo) @@ -54,6 +85,43 @@ static void fbnic_set_counter(u64 *stat, struct fbnic_stat_counter *counter) *stat = counter->value; } +static void fbnic_get_strings(struct net_device *dev, u32 sset, u8 *data) +{ + int i; + + switch (sset) { + case ETH_SS_STATS: + for (i = 0; i < FBNIC_HW_STATS_LEN; i++) + ethtool_puts(&data, fbnic_gstrings_hw_stats[i].string); + break; + } +} + +static int fbnic_get_sset_count(struct net_device *dev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return FBNIC_HW_STATS_LEN; + default: + return -EOPNOTSUPP; + } +} + +static void fbnic_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct fbnic_net *fbn = netdev_priv(dev); + const struct fbnic_stat *stat; + int i; + + fbnic_get_hw_stats(fbn->fbd); + + for (i = 0; i < FBNIC_HW_STATS_LEN; i++) { + stat = &fbnic_gstrings_hw_stats[i]; + data[i] = *(u64 *)((u8 *)&fbn->fbd->hw_stats + stat->offset); + } +} + static void fbnic_get_eth_mac_stats(struct net_device *netdev, struct ethtool_eth_mac_stats *eth_mac_stats) @@ -138,6 +206,9 @@ static const struct ethtool_ops fbnic_ethtool_ops = { .get_drvinfo = fbnic_get_drvinfo, .get_regs_len = fbnic_get_regs_len, .get_regs = fbnic_get_regs, + .get_strings = fbnic_get_strings, + .get_ethtool_stats = fbnic_get_ethtool_stats, + .get_sset_count = fbnic_get_sset_count, .get_ts_info = fbnic_get_ts_info, .get_ts_stats = fbnic_get_ts_stats, .get_eth_mac_stats = fbnic_get_eth_mac_stats, diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c index c391f2155054..89ac6bc8c7fc 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c @@ -3,6 +3,27 @@ #include "fbnic.h" +static void fbnic_hw_stat_rst32(struct fbnic_dev *fbd, u32 reg, + struct fbnic_stat_counter *stat) +{ + /* We do not touch the "value" field here. + * It gets zeroed out on fbd structure allocation. + * After that we want it to grow continuously + * through device resets and power state changes. + */ + stat->u.old_reg_value_32 = rd32(fbd, reg); +} + +static void fbnic_hw_stat_rd32(struct fbnic_dev *fbd, u32 reg, + struct fbnic_stat_counter *stat) +{ + u32 new_reg_value; + + new_reg_value = rd32(fbd, reg); + stat->value += new_reg_value - stat->u.old_reg_value_32; + stat->u.old_reg_value_32 = new_reg_value; +} + u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset) { u32 prev_upper, upper, lower, diff; @@ -49,6 +70,53 @@ static void fbnic_hw_stat_rd64(struct fbnic_dev *fbd, u32 reg, s32 offset, stat->u.old_reg_value_64 = new_reg_value; } +static void fbnic_reset_rpc_stats(struct fbnic_dev *fbd, + struct fbnic_rpc_stats *rpc) +{ + fbnic_hw_stat_rst32(fbd, + FBNIC_RPC_CNTR_UNKN_ETYPE, + &rpc->unkn_etype); + fbnic_hw_stat_rst32(fbd, + FBNIC_RPC_CNTR_UNKN_EXT_HDR, + &rpc->unkn_ext_hdr); + fbnic_hw_stat_rst32(fbd, FBNIC_RPC_CNTR_IPV4_FRAG, &rpc->ipv4_frag); + fbnic_hw_stat_rst32(fbd, FBNIC_RPC_CNTR_IPV6_FRAG, &rpc->ipv6_frag); + fbnic_hw_stat_rst32(fbd, FBNIC_RPC_CNTR_IPV4_ESP, &rpc->ipv4_esp); + fbnic_hw_stat_rst32(fbd, FBNIC_RPC_CNTR_IPV6_ESP, &rpc->ipv6_esp); + fbnic_hw_stat_rst32(fbd, FBNIC_RPC_CNTR_TCP_OPT_ERR, &rpc->tcp_opt_err); + fbnic_hw_stat_rst32(fbd, + FBNIC_RPC_CNTR_OUT_OF_HDR_ERR, + &rpc->out_of_hdr_err); + fbnic_hw_stat_rst32(fbd, + FBNIC_RPC_CNTR_OVR_SIZE_ERR, + &rpc->ovr_size_err); +} + +static void fbnic_get_rpc_stats32(struct fbnic_dev *fbd, + struct fbnic_rpc_stats *rpc) +{ + fbnic_hw_stat_rd32(fbd, + FBNIC_RPC_CNTR_UNKN_ETYPE, + &rpc->unkn_etype); + fbnic_hw_stat_rd32(fbd, + FBNIC_RPC_CNTR_UNKN_EXT_HDR, + &rpc->unkn_ext_hdr); + + fbnic_hw_stat_rd32(fbd, FBNIC_RPC_CNTR_IPV4_FRAG, &rpc->ipv4_frag); + fbnic_hw_stat_rd32(fbd, FBNIC_RPC_CNTR_IPV6_FRAG, &rpc->ipv6_frag); + + fbnic_hw_stat_rd32(fbd, FBNIC_RPC_CNTR_IPV4_ESP, &rpc->ipv4_esp); + fbnic_hw_stat_rd32(fbd, FBNIC_RPC_CNTR_IPV6_ESP, &rpc->ipv6_esp); + + fbnic_hw_stat_rd32(fbd, FBNIC_RPC_CNTR_TCP_OPT_ERR, &rpc->tcp_opt_err); + fbnic_hw_stat_rd32(fbd, + FBNIC_RPC_CNTR_OUT_OF_HDR_ERR, + &rpc->out_of_hdr_err); + fbnic_hw_stat_rd32(fbd, + FBNIC_RPC_CNTR_OVR_SIZE_ERR, + &rpc->ovr_size_err); +} + static void fbnic_reset_pcie_stats_asic(struct fbnic_dev *fbd, struct fbnic_pcie_stats *pcie) { @@ -135,10 +203,18 @@ static void fbnic_get_pcie_stats_asic64(struct fbnic_dev *fbd, void fbnic_reset_hw_stats(struct fbnic_dev *fbd) { + fbnic_reset_rpc_stats(fbd, &fbd->hw_stats.rpc); fbnic_reset_pcie_stats_asic(fbd, &fbd->hw_stats.pcie); } +void fbnic_get_hw_stats32(struct fbnic_dev *fbd) +{ + fbnic_get_rpc_stats32(fbd, &fbd->hw_stats.rpc); +} + void fbnic_get_hw_stats(struct fbnic_dev *fbd) { + fbnic_get_hw_stats32(fbd); + fbnic_get_pcie_stats_asic64(fbd, &fbd->hw_stats.pcie); } diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h index b152c6b1b4ab..78df56b87745 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h @@ -37,6 +37,12 @@ struct fbnic_mac_stats { struct fbnic_eth_mac_stats eth_mac; }; +struct fbnic_rpc_stats { + struct fbnic_stat_counter unkn_etype, unkn_ext_hdr; + struct fbnic_stat_counter ipv4_frag, ipv6_frag, ipv4_esp, ipv6_esp; + struct fbnic_stat_counter tcp_opt_err, out_of_hdr_err, ovr_size_err; +}; + struct fbnic_pcie_stats { struct fbnic_stat_counter ob_rd_tlp, ob_rd_dword; struct fbnic_stat_counter ob_wr_tlp, ob_wr_dword; @@ -49,12 +55,14 @@ struct fbnic_pcie_stats { struct fbnic_hw_stats { struct fbnic_mac_stats mac; + struct fbnic_rpc_stats rpc; struct fbnic_pcie_stats pcie; }; u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset); void fbnic_reset_hw_stats(struct fbnic_dev *fbd); +void fbnic_get_hw_stats32(struct fbnic_dev *fbd); void fbnic_get_hw_stats(struct fbnic_dev *fbd); #endif /* _FBNIC_HW_STATS_H_ */ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c index f913a87c78a2..e110c2ceafcf 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c @@ -199,6 +199,8 @@ static void fbnic_service_task(struct work_struct *work) rtnl_lock(); + fbnic_get_hw_stats32(fbd); + fbnic_fw_check_heartbeat(fbd); fbnic_health_check(fbd); -- cgit v1.2.3