[PATCH] net/gve: Check whether the driver is compatible with the device presented.
Guo, Junfeng
junfeng.guo at intel.com
Fri Apr 14 11:05:05 CEST 2023
Hi Ferruh,
Here is the summary of the dependency of related patches:
P1: necessary headers update
https://patchwork.dpdk.org/project/dpdk/list/?series=27647&state=*
P2: minor update for base code
https://patchwork.dpdk.org/project/dpdk/list/?series=27653&state=*
P3: gve PMD enhancement
https://patchwork.dpdk.org/project/dpdk/list/?series=27687&state=*
P4: add new AdminQ cmd to verify drv cap
https://patchwork.dpdk.org/project/dpdk/list/?series=27703&state=*
The merging order could be: P1 > P2 > P3 > P4, due to the dependency.
Just to inform you about this here. Thanks for the review!
Regards,
Junfeng
> -----Original Message-----
> From: Rushil Gupta <rushilg at google.com>
> Sent: Friday, April 14, 2023 13:15
> To: ferruh.yigit at amd.com; Zhang, Qi Z <qi.z.zhang at intel.com>; Wu,
> Jingjing <jingjing.wu at intel.com>
> Cc: Guo, Junfeng <junfeng.guo at intel.com>; joshwash at google.com;
> dev at dpdk.org; Rushil Gupta <rushilg at google.com>; Jeroen de Borst
> <jeroendb at google.com>
> Subject: [PATCH] net/gve: Check whether the driver is compatible with
> the device presented.
>
> Change gve_driver_info fields to report DPDK as OS type and DPDK RTE
> version as OS version, reserving driver_version fields for GVE driver
> version based on features.
>
> This patch is dependent on
> https://patchwork.dpdk.org/project/dpdk/list/?series=27687&state=*
>
> Signed-off-by: Rushil Gupta <rushilg at google.com>
> Signed-off-by: Joshua Washington <joshwash at google.com>
> Signed-off-by: Junfeng Guo <junfeng.guo at intel.com>
> Signed-off-by: Jeroen de Borst <jeroendb at google.com>
> ---
> drivers/net/gve/base/gve.h | 3 --
> drivers/net/gve/base/gve_adminq.c | 19 +++++++++
> drivers/net/gve/base/gve_adminq.h | 49 ++++++++++++++++++++++-
> drivers/net/gve/base/gve_osdep.h | 36 +++++++++++++++++
> drivers/net/gve/gve_ethdev.c | 65 +++++++++++++++++++++++++-----
> -
> drivers/net/gve/gve_ethdev.h | 2 +-
> drivers/net/gve/gve_version.c | 14 +++++++
> drivers/net/gve/gve_version.h | 25 ++++++++++++
> drivers/net/gve/meson.build | 1 +
> 9 files changed, 198 insertions(+), 16 deletions(-)
> create mode 100644 drivers/net/gve/gve_version.c
> create mode 100644 drivers/net/gve/gve_version.h
>
> diff --git a/drivers/net/gve/base/gve.h b/drivers/net/gve/base/gve.h
> index 2dc4507acb..89f9654a72 100644
> --- a/drivers/net/gve/base/gve.h
> +++ b/drivers/net/gve/base/gve.h
> @@ -8,9 +8,6 @@
>
> #include "gve_desc.h"
>
> -#define GVE_VERSION "1.3.0"
> -#define GVE_VERSION_PREFIX "GVE-"
> -
> #ifndef GOOGLE_VENDOR_ID
> #define GOOGLE_VENDOR_ID 0x1ae0
> #endif
> diff --git a/drivers/net/gve/base/gve_adminq.c
> b/drivers/net/gve/base/gve_adminq.c
> index e745b709b2..2e5099a5b0 100644
> --- a/drivers/net/gve/base/gve_adminq.c
> +++ b/drivers/net/gve/base/gve_adminq.c
> @@ -401,6 +401,9 @@ static int gve_adminq_issue_cmd(struct gve_priv
> *priv,
> case GVE_ADMINQ_GET_PTYPE_MAP:
> priv->adminq_get_ptype_map_cnt++;
> break;
> + case GVE_ADMINQ_VERIFY_DRIVER_COMPATIBILITY:
> + priv->adminq_verify_driver_compatibility_cnt++;
> + break;
> default:
> PMD_DRV_LOG(ERR, "unknown AQ command
> opcode %d", opcode);
> }
> @@ -465,6 +468,22 @@ int
> gve_adminq_configure_device_resources(struct gve_priv *priv,
> return gve_adminq_execute_cmd(priv, &cmd);
> }
>
> +int gve_adminq_verify_driver_compatibility(struct gve_priv *priv,
> + u64 driver_info_len,
> + dma_addr_t driver_info_addr)
> +{
> + union gve_adminq_command cmd;
> +
> + memset(&cmd, 0, sizeof(cmd));
> + cmd.opcode =
> cpu_to_be32(GVE_ADMINQ_VERIFY_DRIVER_COMPATIBILITY);
> + cmd.verify_driver_compatibility = (struct
> gve_adminq_verify_driver_compatibility) {
> + .driver_info_len = cpu_to_be64(driver_info_len),
> + .driver_info_addr = cpu_to_be64(driver_info_addr),
> + };
> +
> + return gve_adminq_execute_cmd(priv, &cmd);
> +}
> +
> int gve_adminq_deconfigure_device_resources(struct gve_priv *priv)
> {
> union gve_adminq_command cmd;
> diff --git a/drivers/net/gve/base/gve_adminq.h
> b/drivers/net/gve/base/gve_adminq.h
> index 05550119de..edac32f031 100644
> --- a/drivers/net/gve/base/gve_adminq.h
> +++ b/drivers/net/gve/base/gve_adminq.h
> @@ -1,6 +1,6 @@
> /* SPDX-License-Identifier: MIT
> * Google Virtual Ethernet (gve) driver
> - * Copyright (C) 2015-2022 Google, Inc.
> + * Copyright (C) 2015-2023 Google, Inc.
> */
>
> #ifndef _GVE_ADMINQ_H
> @@ -23,6 +23,7 @@ enum gve_adminq_opcodes {
> GVE_ADMINQ_REPORT_STATS = 0xC,
> GVE_ADMINQ_REPORT_LINK_SPEED = 0xD,
> GVE_ADMINQ_GET_PTYPE_MAP = 0xE,
> + GVE_ADMINQ_VERIFY_DRIVER_COMPATIBILITY = 0xF,
> };
>
> /* Admin queue status codes */
> @@ -145,6 +146,47 @@ enum gve_sup_feature_mask {
> };
>
> #define GVE_DEV_OPT_LEN_GQI_RAW_ADDRESSING 0x0
> +enum gve_driver_capbility {
> + gve_driver_capability_gqi_qpl = 0,
> + gve_driver_capability_gqi_rda = 1,
> + gve_driver_capability_dqo_qpl = 2, /* reserved for future use */
> + gve_driver_capability_dqo_rda = 3,
> +};
> +
> +#define GVE_CAP1(a) BIT((int)a)
> +#define GVE_CAP2(a) BIT(((int)a) - 64)
> +#define GVE_CAP3(a) BIT(((int)a) - 128)
> +#define GVE_CAP4(a) BIT(((int)a) - 192)
> +
> +#define GVE_DRIVER_CAPABILITY_FLAGS1 \
> + (GVE_CAP1(gve_driver_capability_gqi_qpl) | \
> + GVE_CAP1(gve_driver_capability_gqi_rda) | \
> + GVE_CAP1(gve_driver_capability_dqo_rda))
> +
> +#define GVE_DRIVER_CAPABILITY_FLAGS2 0x0
> +#define GVE_DRIVER_CAPABILITY_FLAGS3 0x0
> +#define GVE_DRIVER_CAPABILITY_FLAGS4 0x0
> +
> +struct gve_driver_info {
> + u8 os_type; /* 0x05 = DPDK */
> + u8 driver_major;
> + u8 driver_minor;
> + u8 driver_sub;
> + __be32 os_version_major;
> + __be32 os_version_minor;
> + __be32 os_version_sub;
> + __be64 driver_capability_flags[4];
> + u8 os_version_str1[OS_VERSION_STRLEN];
> + u8 os_version_str2[OS_VERSION_STRLEN];
> +};
> +
> +struct gve_adminq_verify_driver_compatibility {
> + __be64 driver_info_len;
> + __be64 driver_info_addr;
> +};
> +
> +GVE_CHECK_STRUCT_LEN(16, gve_adminq_verify_driver_compatibility);
> +
>
> struct gve_adminq_configure_device_resources {
> __be64 counter_array;
> @@ -345,6 +387,8 @@ union gve_adminq_command {
> struct gve_adminq_report_stats report_stats;
> struct gve_adminq_report_link_speed
> report_link_speed;
> struct gve_adminq_get_ptype_map
> get_ptype_map;
> + struct gve_adminq_verify_driver_compatibility
> + verify_driver_compatibility;
> };
> };
> u8 reserved[64];
> @@ -378,4 +422,7 @@ struct gve_ptype_lut;
> int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv,
> struct gve_ptype_lut *ptype_lut);
>
> +int gve_adminq_verify_driver_compatibility(struct gve_priv *priv,
> + u64 driver_info_len,
> + dma_addr_t driver_info_addr);
> #endif /* _GVE_ADMINQ_H */
> diff --git a/drivers/net/gve/base/gve_osdep.h
> b/drivers/net/gve/base/gve_osdep.h
> index 7cb73002f4..a5efa8543e 100644
> --- a/drivers/net/gve/base/gve_osdep.h
> +++ b/drivers/net/gve/base/gve_osdep.h
> @@ -21,9 +21,14 @@
> #include <rte_malloc.h>
> #include <rte_memcpy.h>
> #include <rte_memzone.h>
> +#include <rte_version.h>
>
> #include "../gve_logs.h"
>
> +#ifdef __linux__
> +#include <sys/utsname.h>
> +#endif
> +
> typedef uint8_t u8;
> typedef uint16_t u16;
> typedef uint32_t u32;
> @@ -69,6 +74,12 @@ typedef rte_iova_t dma_addr_t;
>
> #define msleep(ms) rte_delay_ms(ms)
>
> +#define OS_VERSION_STRLEN 128
> +struct os_version_string {
> + char os_version_str1[OS_VERSION_STRLEN];
> + char os_version_str2[OS_VERSION_STRLEN];
> +};
> +
> /* These macros are used to generate compilation errors if a
> struct/union
> * is not exactly the correct length. It gives a divide by zero error if
> * the struct/union is not of the correct size, otherwise it creates an
> @@ -79,6 +90,12 @@ typedef rte_iova_t dma_addr_t;
> #define GVE_CHECK_UNION_LEN(n, X) enum
> gve_static_asset_enum_##X \
> { gve_static_assert_##X = (n) / ((sizeof(union X) == (n)) ? 1 : 0) }
>
> +#ifndef LINUX_VERSION_MAJOR
> +#define LINUX_VERSION_MAJOR (((LINUX_VERSION_CODE) >> 16) &
> 0xff)
> +#define LINUX_VERSION_SUBLEVEL (((LINUX_VERSION_CODE) >> 8) &
> 0xff)
> +#define LINUX_VERSION_PATCHLEVEL ((LINUX_VERSION_CODE) & 0xff)
> +#endif
> +
> static __rte_always_inline u8
> readb(volatile void *addr)
> {
> @@ -156,4 +173,23 @@ gve_free_dma_mem(struct gve_dma_mem
> *mem)
> mem->pa = 0;
> }
>
> +static inline void
> +populate_driver_version_strings(struct os_version_string
> *os_version_str)
> +{
> +#ifdef __linux__
> + struct utsname uts;
> + if (uname(&uts) >= 0) {
> + /* release */
> + rte_strscpy(os_version_str->os_version_str1, uts.release,
> + sizeof(os_version_str->os_version_str1));
> + /* version */
> + rte_strscpy(os_version_str->os_version_str2, uts.version,
> + sizeof(os_version_str->os_version_str2));
> + }
> +#else
> + /* gVNIC is currently not supported on OS like FreeBSD */
> + RTE_SET_USED(os_version_str);
> +#endif
> +}
> +
> #endif /* _GVE_OSDEP_H_ */
> diff --git a/drivers/net/gve/gve_ethdev.c b/drivers/net/gve/gve_ethdev.c
> index cf28a4a3b7..1d6e134fff 100644
> --- a/drivers/net/gve/gve_ethdev.c
> +++ b/drivers/net/gve/gve_ethdev.c
> @@ -5,21 +5,13 @@
> #include "gve_ethdev.h"
> #include "base/gve_adminq.h"
> #include "base/gve_register.h"
> -
> -const char gve_version_str[] = GVE_VERSION;
> -static const char gve_version_prefix[] = GVE_VERSION_PREFIX;
> +#include "base/gve_osdep.h"
> +#include "gve_version.h"
>
> static void
> gve_write_version(uint8_t *driver_version_register)
> {
> - const char *c = gve_version_prefix;
> -
> - while (*c) {
> - writeb(*c, driver_version_register);
> - c++;
> - }
> -
> - c = gve_version_str;
> + const char *c = gve_version_string();
> while (*c) {
> writeb(*c, driver_version_register);
> c++;
> @@ -265,6 +257,52 @@ gve_dev_close(struct rte_eth_dev *dev)
> return err;
> }
>
> +static int
> +gve_verify_driver_compatibility(struct gve_priv *priv)
> +{
> + const struct rte_memzone *driver_info_bus;
> + struct gve_driver_info *driver_info;
> + int err;
> +
> + driver_info_bus =
> rte_memzone_reserve_aligned("verify_driver_compatibility",
> + sizeof(struct
> gve_driver_info),
> + rte_socket_id(),
> +
> RTE_MEMZONE_IOVA_CONTIG, PAGE_SIZE);
> + if (driver_info_bus == NULL) {
> + PMD_DRV_LOG(ERR,
> + "Could not alloc memzone for driver
> compatibility");
> + return -ENOMEM;
> + }
> + driver_info = (struct gve_driver_info *)driver_info_bus->addr;
> + *driver_info = (struct gve_driver_info) {
> + .os_type = 5, /* DPDK */
> + .driver_major = GVE_VERSION_MAJOR,
> + .driver_minor = GVE_VERSION_MINOR,
> + .driver_sub = GVE_VERSION_SUB,
> + .os_version_major =
> cpu_to_be32(DPDK_VERSION_MAJOR),
> + .os_version_minor =
> cpu_to_be32(DPDK_VERSION_MINOR),
> + .os_version_sub = cpu_to_be32(DPDK_VERSION_SUB),
> + .driver_capability_flags = {
> + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS1),
> + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS2),
> + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS3),
> + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS4),
> + },
> + };
> +
> + populate_driver_version_strings((struct os_version_string
> *)&driver_info->os_version_str1);
> +
> + err = gve_adminq_verify_driver_compatibility(priv,
> + sizeof(struct gve_driver_info),
> (dma_addr_t)driver_info_bus);
> +
> + /* It's ok if the device doesn't support this */
> + if (err == -EOPNOTSUPP)
> + err = 0;
> +
> + rte_memzone_free(driver_info_bus);
> + return err;
> +}
> +
> static int
> gve_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info
> *dev_info)
> {
> @@ -672,6 +710,11 @@ gve_init_priv(struct gve_priv *priv, bool
> skip_describe_device)
> PMD_DRV_LOG(ERR, "Failed to alloc admin queue:
> err=%d", err);
> return err;
> }
> + err = gve_verify_driver_compatibility(priv);
> + if (err) {
> + PMD_DRV_LOG(ERR, "Could not verify driver
> compatibility: err=%d", err);
> + goto free_adminq;
> + }
>
> if (skip_describe_device)
> goto setup_device;
> diff --git a/drivers/net/gve/gve_ethdev.h b/drivers/net/gve/gve_ethdev.h
> index 42a02cf5d4..23ccff37d3 100644
> --- a/drivers/net/gve/gve_ethdev.h
> +++ b/drivers/net/gve/gve_ethdev.h
> @@ -222,7 +222,7 @@ struct gve_priv {
> uint32_t adminq_report_stats_cnt;
> uint32_t adminq_report_link_speed_cnt;
> uint32_t adminq_get_ptype_map_cnt;
> -
> + uint32_t adminq_verify_driver_compatibility_cnt;
> volatile uint32_t state_flags;
>
> /* Gvnic device link speed from hypervisor. */
> diff --git a/drivers/net/gve/gve_version.c
> b/drivers/net/gve/gve_version.c
> new file mode 100644
> index 0000000000..7eaa689d90
> --- /dev/null
> +++ b/drivers/net/gve/gve_version.c
> @@ -0,0 +1,14 @@
> +/* SPDX-License-Identifier: MIT
> + * Google Virtual Ethernet (gve) driver
> + * Copyright (C) 2015-2023 Google, Inc.
> + */
> +#include "gve_version.h"
> +
> +const char *gve_version_string(void)
> +{
> + static char gve_version[10];
> + snprintf(gve_version, sizeof(gve_version), "%s%d.%d.%d",
> + GVE_VERSION_PREFIX, GVE_VERSION_MAJOR,
> GVE_VERSION_MINOR,
> + GVE_VERSION_SUB);
> + return gve_version;
> +}
> diff --git a/drivers/net/gve/gve_version.h
> b/drivers/net/gve/gve_version.h
> new file mode 100644
> index 0000000000..9af6a00568
> --- /dev/null
> +++ b/drivers/net/gve/gve_version.h
> @@ -0,0 +1,25 @@
> +/* SPDX-License-Identifier: MIT
> + * Google Virtual Ethernet (gve) driver
> + * Copyright (C) 2015-2023 Google, Inc.
> + */
> +
> +#ifndef _GVE_VERSION_H_
> +#define _GVE_VERSION_H_
> +
> +#include <rte_version.h>
> +
> +#define GVE_VERSION_PREFIX "DPDK-"
> +#define GVE_VERSION_MAJOR 1
> +#define GVE_VERSION_MINOR 0
> +#define GVE_VERSION_SUB 0
> +
> +#define DPDK_VERSION_MAJOR (100 * RTE_VER_YEAR +
> RTE_VER_MONTH)
> +#define DPDK_VERSION_MINOR RTE_VER_MINOR
> +#define DPDK_VERSION_SUB RTE_VER_RELEASE
> +
> +
> +const char *
> +gve_version_string(void);
> +
> +
> +#endif /* GVE_VERSION_H */
> diff --git a/drivers/net/gve/meson.build b/drivers/net/gve/meson.build
> index af0010c01c..a37c4bafa2 100644
> --- a/drivers/net/gve/meson.build
> +++ b/drivers/net/gve/meson.build
> @@ -12,5 +12,6 @@ sources = files(
> 'gve_rx.c',
> 'gve_tx.c',
> 'gve_ethdev.c',
> + 'gve_version.c',
> )
> includes += include_directories('base')
> --
> 2.40.0.634.g4ca3ef3211-goog
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