netdev - Re: [PATCH net v1 2/2] octeontx2-pf: Fix holes in error code

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Date: Tue, 31 Oct 2023 12:06:27 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Ratheesh Kannoth <rkannoth@...vell.com>, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Cc: sgoutham@...vell.com, gakula@...vell.com, sbhatta@...vell.com, 
 hkelam@...vell.com, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org,  wojciech.drewek@...el.com
Subject: Re: [PATCH net v1 2/2] octeontx2-pf: Fix holes in error code

On Fri, 2023-10-27 at 07:49 +0530, Ratheesh Kannoth wrote:
> Error code strings are not getting printed properly
> due to holes. Print error code as well.
> 
> Fixes: 51afe9026d0c ("octeontx2-pf: NIX TX overwrites SQ_CTX_HW_S[SQ_INT]")
> Signed-off-by: Ratheesh Kannoth <rkannoth@...vell.com>
> 
> ---
> ChangeLog:
> 
> v0 -> v1: Splitted patch into two
> ---
>  .../ethernet/marvell/octeontx2/nic/otx2_pf.c  | 80 +++++++++++--------
>  1 file changed, 46 insertions(+), 34 deletions(-)
> 
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> index 6daf4d58c25d..125fe231702a 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> @@ -1193,31 +1193,32 @@ static char *nix_mnqerr_e_str[NIX_MNQERR_MAX] = {
>  };
>  
>  static char *nix_snd_status_e_str[NIX_SND_STATUS_MAX] =  {
> -	"NIX_SND_STATUS_GOOD",
> -	"NIX_SND_STATUS_SQ_CTX_FAULT",
> -	"NIX_SND_STATUS_SQ_CTX_POISON",
> -	"NIX_SND_STATUS_SQB_FAULT",
> -	"NIX_SND_STATUS_SQB_POISON",
> -	"NIX_SND_STATUS_HDR_ERR",
> -	"NIX_SND_STATUS_EXT_ERR",
> -	"NIX_SND_STATUS_JUMP_FAULT",
> -	"NIX_SND_STATUS_JUMP_POISON",
> -	"NIX_SND_STATUS_CRC_ERR",
> -	"NIX_SND_STATUS_IMM_ERR",
> -	"NIX_SND_STATUS_SG_ERR",
> -	"NIX_SND_STATUS_MEM_ERR",
> -	"NIX_SND_STATUS_INVALID_SUBDC",
> -	"NIX_SND_STATUS_SUBDC_ORDER_ERR",
> -	"NIX_SND_STATUS_DATA_FAULT",
> -	"NIX_SND_STATUS_DATA_POISON",
> -	"NIX_SND_STATUS_NPC_DROP_ACTION",
> -	"NIX_SND_STATUS_LOCK_VIOL",
> -	"NIX_SND_STATUS_NPC_UCAST_CHAN_ERR",
> -	"NIX_SND_STATUS_NPC_MCAST_CHAN_ERR",
> -	"NIX_SND_STATUS_NPC_MCAST_ABORT",
> -	"NIX_SND_STATUS_NPC_VTAG_PTR_ERR",
> -	"NIX_SND_STATUS_NPC_VTAG_SIZE_ERR",
> -	"NIX_SND_STATUS_SEND_STATS_ERR",
> +	[NIX_SND_STATUS_GOOD] = "NIX_SND_STATUS_GOOD",
> +	[NIX_SND_STATUS_SQ_CTX_FAULT] = "NIX_SND_STATUS_SQ_CTX_FAULT",
> +	[NIX_SND_STATUS_SQ_CTX_POISON] = "NIX_SND_STATUS_SQ_CTX_POISON",
> +	[NIX_SND_STATUS_SQB_FAULT] = "NIX_SND_STATUS_SQB_FAULT",
> +	[NIX_SND_STATUS_SQB_POISON] = "NIX_SND_STATUS_SQB_POISON",
> +	[NIX_SND_STATUS_HDR_ERR] = "NIX_SND_STATUS_HDR_ERR",
> +	[NIX_SND_STATUS_EXT_ERR] = "NIX_SND_STATUS_EXT_ERR",
> +	[NIX_SND_STATUS_JUMP_FAULT] = "NIX_SND_STATUS_JUMP_FAULT",
> +	[NIX_SND_STATUS_JUMP_POISON] = "NIX_SND_STATUS_JUMP_POISON",
> +	[NIX_SND_STATUS_CRC_ERR] = "NIX_SND_STATUS_CRC_ERR",
> +	[NIX_SND_STATUS_IMM_ERR] = "NIX_SND_STATUS_IMM_ERR",
> +	[NIX_SND_STATUS_SG_ERR] = "NIX_SND_STATUS_SG_ERR",
> +	[NIX_SND_STATUS_MEM_ERR] = "NIX_SND_STATUS_MEM_ERR",
> +	[NIX_SND_STATUS_INVALID_SUBDC] = "NIX_SND_STATUS_INVALID_SUBDC",
> +	[NIX_SND_STATUS_SUBDC_ORDER_ERR] = "NIX_SND_STATUS_SUBDC_ORDER_ERR",
> +	[NIX_SND_STATUS_DATA_FAULT] = "NIX_SND_STATUS_DATA_FAULT",
> +	[NIX_SND_STATUS_DATA_POISON] = "NIX_SND_STATUS_DATA_POISON",
> +	[NIX_SND_STATUS_NPC_DROP_ACTION] = "NIX_SND_STATUS_NPC_DROP_ACTION",
> +	[NIX_SND_STATUS_LOCK_VIOL] = "NIX_SND_STATUS_LOCK_VIOL",
> +	[NIX_SND_STATUS_NPC_UCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_UCAST_CHAN_ERR",
> +	[NIX_SND_STATUS_NPC_MCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_MCAST_CHAN_ERR",
> +	[NIX_SND_STATUS_NPC_MCAST_ABORT] = "NIX_SND_STATUS_NPC_MCAST_ABORT",
> +	[NIX_SND_STATUS_NPC_VTAG_PTR_ERR] = "NIX_SND_STATUS_NPC_VTAG_PTR_ERR",
> +	[NIX_SND_STATUS_NPC_VTAG_SIZE_ERR] = "NIX_SND_STATUS_NPC_VTAG_SIZE_ERR",
> +	[NIX_SND_STATUS_SEND_MEM_FAULT] = "NIX_SND_STATUS_SEND_MEM_FAULT",
> +	[NIX_SND_STATUS_SEND_STATS_ERR] = "NIX_SND_STATUS_SEND_STATS_ERR",
>  };
>  
>  static irqreturn_t otx2_q_intr_handler(int irq, void *data)
> @@ -1238,14 +1239,16 @@ static irqreturn_t otx2_q_intr_handler(int irq, void *data)
>  			continue;
>  
>  		if (val & BIT_ULL(42)) {
> -			netdev_err(pf->netdev, "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
> +			netdev_err(pf->netdev,
> +				   "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
>  				   qidx, otx2_read64(pf, NIX_LF_ERR_INT));
>  		} else {
>  			if (val & BIT_ULL(NIX_CQERRINT_DOOR_ERR))
>  				netdev_err(pf->netdev, "CQ%lld: Doorbell error",
>  					   qidx);
>  			if (val & BIT_ULL(NIX_CQERRINT_CQE_FAULT))
> -				netdev_err(pf->netdev, "CQ%lld: Memory fault on CQE write to LLC/DRAM",
> +				netdev_err(pf->netdev,
> +					   "CQ%lld: Memory fault on CQE write to LLC/DRAM",
>  					   qidx);
>  		}

It's not a big deal (no need to repost just for this), but the above
chunk (and a couple below, too) is not related to the current fix, you
should have not included it here.

Cheers,

Paolo

>  
> @@ -1272,7 +1275,8 @@ static irqreturn_t otx2_q_intr_handler(int irq, void *data)
>  			     (val & NIX_SQINT_BITS));
>  
>  		if (val & BIT_ULL(42)) {
> -			netdev_err(pf->netdev, "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
> +			netdev_err(pf->netdev,
> +				   "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
>  				   qidx, otx2_read64(pf, NIX_LF_ERR_INT));
>  			goto done;
>  		}
> @@ -1282,8 +1286,11 @@ static irqreturn_t otx2_q_intr_handler(int irq, void *data)
>  			goto chk_mnq_err_dbg;
>  
>  		sq_op_err_code = FIELD_GET(GENMASK(7, 0), sq_op_err_dbg);
> -		netdev_err(pf->netdev, "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(%llx)  err=%s\n",
> -			   qidx, sq_op_err_dbg, nix_sqoperr_e_str[sq_op_err_code]);
> +		netdev_err(pf->netdev,
> +			   "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(0x%llx)  err=%s(%#x)\n",
> +			   qidx, sq_op_err_dbg,
> +			   nix_sqoperr_e_str[sq_op_err_code],
> +			   sq_op_err_code);
>  
>  		otx2_write64(pf, NIX_LF_SQ_OP_ERR_DBG, BIT_ULL(44));
>  
> @@ -1300,16 +1307,21 @@ static irqreturn_t otx2_q_intr_handler(int irq, void *data)
>  			goto chk_snd_err_dbg;
>  
>  		mnq_err_code = FIELD_GET(GENMASK(7, 0), mnq_err_dbg);
> -		netdev_err(pf->netdev, "SQ%lld: NIX_LF_MNQ_ERR_DBG(%llx)  err=%s\n",
> -			   qidx, mnq_err_dbg,  nix_mnqerr_e_str[mnq_err_code]);
> +		netdev_err(pf->netdev,
> +			   "SQ%lld: NIX_LF_MNQ_ERR_DBG(0x%llx)  err=%s(%#x)\n",
> +			   qidx, mnq_err_dbg,  nix_mnqerr_e_str[mnq_err_code],
> +			   mnq_err_code);
>  		otx2_write64(pf, NIX_LF_MNQ_ERR_DBG, BIT_ULL(44));
>  
>  chk_snd_err_dbg:
>  		snd_err_dbg = otx2_read64(pf, NIX_LF_SEND_ERR_DBG);
>  		if (snd_err_dbg & BIT(44)) {
>  			snd_err_code = FIELD_GET(GENMASK(7, 0), snd_err_dbg);
> -			netdev_err(pf->netdev, "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s\n",
> -				   qidx, snd_err_dbg, nix_snd_status_e_str[snd_err_code]);
> +			netdev_err(pf->netdev,
> +				   "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s(%#x)\n",
> +				   qidx, snd_err_dbg,
> +				   nix_snd_status_e_str[snd_err_code],
> +				   snd_err_code);
>  			otx2_write64(pf, NIX_LF_SEND_ERR_DBG, BIT_ULL(44));
>  		}
>