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Date: Tue, 11 Dec 2018 11:23:18 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Cc: davem@...emloft.net, michael.chan@...adcom.com, jiri@...lanox.com,
jakub.kicinski@...ronome.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 RFC 8/8] bnxt_en: Add bnxt_en initial port
params table and register it
Tue, Dec 11, 2018 at 09:46:48AM CET, vasundhara-v.volam@...adcom.com wrote:
>Register devlink_port with devlink and create initial port params
>table for bnxt_en. The table consists of a generic parameter:
>
>wake-on-lan: Enables Wake on Lan for this port when magic packet
>is received with this port's MAC address using ACPI pattern.
>If enabled, the controller asserts a wake pin upon reception of
>WoL packet. ACPI (Advanced Configuration and Power Interface) is
>an industry specification for the efficient handling of power
>consumption in desktop and mobile computers.
>
>Cc: Michael Chan <michael.chan@...adcom.com>
>Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
>---
> drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 44 ++++++++++++++++++++++-
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h | 1 +
> 3 files changed, 45 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
>index 3030931..1113e7c 100644
>--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
>+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
>@@ -1586,6 +1586,7 @@ struct bnxt {
>
> /* devlink interface and vf-rep structs */
> struct devlink *dl;
>+ struct devlink_port dl_port;
> enum devlink_eswitch_mode eswitch_mode;
> struct bnxt_vf_rep **vf_reps; /* array of vf-rep ptrs */
> u16 *cfa_code_map; /* cfa_code -> vf_idx map */
>diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>index 140dbd6..7d084c3 100644
>--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>@@ -37,6 +37,8 @@ enum bnxt_dl_param_id {
> NVM_OFF_MSIX_VEC_PER_PF_MIN, BNXT_NVM_SHARED_CFG, 7},
> {BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK, NVM_OFF_DIS_GRE_VER_CHECK,
> BNXT_NVM_SHARED_CFG, 1},
>+
>+ {DEVLINK_PARAM_GENERIC_ID_WOL, NVM_OFF_WOL, BNXT_NVM_PORT_CFG, 1},
> };
>
> static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
>@@ -70,7 +72,8 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
> bytesize = roundup(nvm_param.num_bits, BITS_PER_BYTE) / BITS_PER_BYTE;
> switch (bytesize) {
> case 1:
>- if (nvm_param.num_bits == 1)
>+ if (nvm_param.num_bits == 1 &&
>+ nvm_param.id != DEVLINK_PARAM_GENERIC_ID_WOL)
> buf = &val->vbool;
> else
> buf = &val->vu8;
>@@ -164,6 +167,16 @@ static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
> return 0;
> }
>
>+static int bnxt_dl_wol_validate(struct devlink *dl, u32 id,
>+ union devlink_param_value val,
>+ struct netlink_ext_ack *extack)
>+{
>+ if (val.vu8 != DEVLINK_PARAM_WOL_MAGIC_PKT ||
>+ val.vu8 != DEVLINK_PARAM_WOL_DISABLE)
You have extack here, please fill the message for the user so he knows
what is going on.
>+ return -EINVAL;
>+ return 0;
>+}
>+
> static const struct devlink_param bnxt_dl_params[] = {
> DEVLINK_PARAM_GENERIC(ENABLE_SRIOV,
> BIT(DEVLINK_PARAM_CMODE_PERMANENT),
>@@ -188,6 +201,12 @@ static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
> NULL),
> };
>
>+static const struct devlink_param bnxt_dl_port_params[] = {
>+ DEVLINK_PARAM_GENERIC(WOL, BIT(DEVLINK_PARAM_CMODE_PERMANENT),
>+ bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
>+ bnxt_dl_wol_validate),
>+};
>+
> int bnxt_dl_register(struct bnxt *bp)
> {
> struct devlink *dl;
>@@ -225,8 +244,28 @@ int bnxt_dl_register(struct bnxt *bp)
> goto err_dl_unreg;
> }
>
>+ rc = devlink_port_register(dl, &bp->dl_port, bp->pf.port_id);
>+ if (rc) {
>+ netdev_warn(bp->dev, "devlink_port_register failed. rc=%d",
Why "warn"? This is "err".
>+ rc);
>+ goto err_dl_param_unreg;
>+ }
>+ devlink_port_type_eth_set(&bp->dl_port, bp->dev);
>+
>+ rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
>+ ARRAY_SIZE(bnxt_dl_port_params));
>+ if (rc) {
>+ netdev_warn(bp->dev, "devlink_port_params_register failed. rc=%d",
Same here. Also, no need to print "rc=x".
>+ rc);
>+ goto err_dl_port_unreg;
>+ }
> return 0;
>
>+err_dl_port_unreg:
>+ devlink_port_unregister(&bp->dl_port);
>+err_dl_param_unreg:
>+ devlink_params_unregister(dl, bnxt_dl_params,
>+ ARRAY_SIZE(bnxt_dl_params));
> err_dl_unreg:
> devlink_unregister(dl);
> err_dl_free:
>@@ -242,6 +281,9 @@ void bnxt_dl_unregister(struct bnxt *bp)
> if (!dl)
> return;
>
>+ devlink_port_params_unregister(&bp->dl_port, bnxt_dl_port_params,
>+ ARRAY_SIZE(bnxt_dl_port_params));
>+ devlink_port_unregister(&bp->dl_port);
> devlink_params_unregister(dl, bnxt_dl_params,
> ARRAY_SIZE(bnxt_dl_params));
> devlink_unregister(dl);
>diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
>index 5b6b2c7..da065ca 100644
>--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
>+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
>@@ -35,6 +35,7 @@ static inline void bnxt_link_bp_to_dl(struct bnxt *bp, struct devlink *dl)
>
> #define NVM_OFF_MSIX_VEC_PER_PF_MAX 108
> #define NVM_OFF_MSIX_VEC_PER_PF_MIN 114
>+#define NVM_OFF_WOL 152
> #define NVM_OFF_IGNORE_ARI 164
> #define NVM_OFF_DIS_GRE_VER_CHECK 171
> #define NVM_OFF_ENABLE_SRIOV 401
>--
>1.8.3.1
>
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