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Message-ID: <8c14cc3d-5da0-4649-add1-ea3e9f010677@intel.com>
Date: Fri, 23 Aug 2024 06:00:13 +0200
From: Przemek Kitszel <przemyslaw.kitszel@...el.com>
To: Mohsin Bashir <mohsin.bashr@...il.com>
CC: <alexanderduyck@...com>, <kuba@...nel.org>, <netdev@...r.kernel.org>,
<andrew@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
<pabeni@...hat.com>, <kernel-team@...a.com>, <sanmanpradhan@...a.com>
Subject: Re: [PATCH net-next 1/2] eth: fbnic: Add ethtool support for fbnic
On 8/22/24 20:49, Mohsin Bashir wrote:
> Add ethtool ops support and enable 'get_drvinfo' for fbnic. The driver
> provides firmware version information while the driver name and bus
> information is provided by ethtool_get_drvinfo().
>
> Signed-off-by: Mohsin Bashir <mohsin.bashr@...il.com>
> ---
> drivers/net/ethernet/meta/fbnic/Makefile | 1 +
> drivers/net/ethernet/meta/fbnic/fbnic.h | 3 +++
> .../net/ethernet/meta/fbnic/fbnic_ethtool.c | 26 +++++++++++++++++++
> drivers/net/ethernet/meta/fbnic/fbnic_fw.c | 13 ++++++++++
> drivers/net/ethernet/meta/fbnic/fbnic_fw.h | 6 ++---
> .../net/ethernet/meta/fbnic/fbnic_netdev.c | 2 ++
> .../net/ethernet/meta/fbnic/fbnic_netdev.h | 1 +
> 7 files changed, 49 insertions(+), 3 deletions(-)
> create mode 100644 drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
>
> diff --git a/drivers/net/ethernet/meta/fbnic/Makefile b/drivers/net/ethernet/meta/fbnic/Makefile
> index 9373b558fdc9..37cfc34a5118 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_devlink.o \
> + fbnic_ethtool.o \
> fbnic_fw.o \
> fbnic_irq.o \
> fbnic_mac.o \
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic.h b/drivers/net/ethernet/meta/fbnic/fbnic.h
> index ad2689bfd6cb..28d970f81bfc 100644
> --- a/drivers/net/ethernet/meta/fbnic/fbnic.h
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic.h
> @@ -132,6 +132,9 @@ void fbnic_free_irq(struct fbnic_dev *dev, int nr, void *data);
> void fbnic_free_irqs(struct fbnic_dev *fbd);
> 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);
> +
> enum fbnic_boards {
> fbnic_board_asic
> };
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
> new file mode 100644
> index 000000000000..0dc083fd1878
> --- /dev/null
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
> @@ -0,0 +1,26 @@
> +#include <linux/ethtool.h>
> +#include <linux/netdevice.h>
> +#include <linux/pci.h>
> +
> +#include "fbnic.h"
> +#include "fbnic_netdev.h"
> +#include "fbnic_tlv.h"
> +
> +static void
> +fbnic_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
> +{
> + struct fbnic_net *fbn = netdev_priv(netdev);
> + struct fbnic_dev *fbd = fbn->fbd;
> +
> + fbnic_get_fw_ver_commit_str(fbd, drvinfo->fw_version,
> + sizeof(drvinfo->fw_version));
> +}
> +
> +static const struct ethtool_ops fbnic_ethtool_ops = {
> + .get_drvinfo = fbnic_get_drvinfo,
> +};
> +
> +void fbnic_set_ethtool_ops(struct net_device *dev)
> +{
> + dev->ethtool_ops = &fbnic_ethtool_ops;
> +}
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
> index 0c6e1b4c119b..5825b69f4638 100644
> --- a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
> @@ -789,3 +789,16 @@ void fbnic_mbx_flush_tx(struct fbnic_dev *fbd)
> count += (tx_mbx->head - head) % FBNIC_IPC_MBX_DESC_LEN;
> } while (count < FBNIC_IPC_MBX_DESC_LEN && --attempts);
> }
> +
> +void fbnic_get_fw_ver_commit_str(struct fbnic_dev *fbd, char *fw_version,
> + const size_t str_sz)
> +{
> + struct fbnic_fw_ver *mgmt = &fbd->fw_cap.running.mgmt;
> + const char *delim = "";
> +
> + if (strlen(mgmt->commit) > 0)
isn't @str_sz holding the size already?
anyway, non-emptiness check should be just mgmt->commit[0]
> + delim = "_";
> +
> + fbnic_mk_full_fw_ver_str(mgmt->version, delim, mgmt->commit,
> + fw_version, str_sz);
> +}
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw.h b/drivers/net/ethernet/meta/fbnic/fbnic_fw.h
> index c65bca613665..221faf8c6756 100644
> --- a/drivers/net/ethernet/meta/fbnic/fbnic_fw.h
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw.h
> @@ -53,10 +53,10 @@ int fbnic_fw_xmit_ownership_msg(struct fbnic_dev *fbd, bool take_ownership);
> int fbnic_fw_init_heartbeat(struct fbnic_dev *fbd, bool poll);
> void fbnic_fw_check_heartbeat(struct fbnic_dev *fbd);
>
> -#define fbnic_mk_full_fw_ver_str(_rev_id, _delim, _commit, _str) \
> +#define fbnic_mk_full_fw_ver_str(_rev_id, _delim, _commit, _str, _str_sz) \
> do { \
> const u32 __rev_id = _rev_id; \
> - snprintf(_str, sizeof(_str), "%02lu.%02lu.%02lu-%03lu%s%s", \
> + snprintf(_str, _str_sz, "%02lu.%02lu.%02lu-%03lu%s%s", \
> FIELD_GET(FBNIC_FW_CAP_RESP_VERSION_MAJOR, __rev_id), \
> FIELD_GET(FBNIC_FW_CAP_RESP_VERSION_MINOR, __rev_id), \
> FIELD_GET(FBNIC_FW_CAP_RESP_VERSION_PATCH, __rev_id), \
> @@ -65,7 +65,7 @@ do { \
> } while (0)
>
> #define fbnic_mk_fw_ver_str(_rev_id, _str) \
> - fbnic_mk_full_fw_ver_str(_rev_id, "", "", _str)
> + fbnic_mk_full_fw_ver_str(_rev_id, "", "", _str, sizeof(_str))
>
> #define FW_HEARTBEAT_PERIOD (10 * HZ)
>
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
> index b7ce6da68543..921325de8d8a 100644
> --- a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
> @@ -385,6 +385,8 @@ struct net_device *fbnic_netdev_alloc(struct fbnic_dev *fbd)
>
> netdev->netdev_ops = &fbnic_netdev_ops;
>
> + fbnic_set_ethtool_ops(netdev);
> +
> fbn = netdev_priv(netdev);
>
> fbn->netdev = netdev;
> diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h
> index 6bc0ebeb8182..d1abc67f340d 100644
> --- a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h
> +++ b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h
> @@ -55,6 +55,7 @@ int fbnic_netdev_register(struct net_device *netdev);
> void fbnic_netdev_unregister(struct net_device *netdev);
> void fbnic_reset_queues(struct fbnic_net *fbn,
> unsigned int tx, unsigned int rx);
> +void fbnic_set_ethtool_ops(struct net_device *dev);
>
> void __fbnic_set_rx_mode(struct net_device *netdev);
> void fbnic_clear_rx_mode(struct net_device *netdev);
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