[PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[Joe Perches]

Convert the various uses of fallthrough comments to fallthrough;

Done via script
Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/

Signed-off-by: Joe Perches <joe@perches.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c        | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
index f260dd..42978f8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
@@ -466,7 +466,7 @@ struct sk_buff *mlx5e_ktls_handle_tx_skb(struct net_device *netdev,
 			if (likely(!skb->decrypted))
 				goto out;
 			WARN_ON_ONCE(1);
-			/* fall-through */
+			fallthrough;
 		default: /* MLX5E_KTLS_SYNC_FAIL */
 			goto err_out;
 		}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
index 6102113..d35bbc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
@@ -339,14 +339,14 @@ static void mlx5_fpga_conn_handle_cqe(struct mlx5_fpga_conn *conn,
 	switch (opcode) {
 	case MLX5_CQE_REQ_ERR:
 		status = ((struct mlx5_err_cqe *)cqe)->syndrome;
-		/* Fall through */
+		fallthrough;
 	case MLX5_CQE_REQ:
 		mlx5_fpga_conn_sq_cqe(conn, cqe, status);
 		break;
 
 	case MLX5_CQE_RESP_ERR:
 		status = ((struct mlx5_err_cqe *)cqe)->syndrome;
-		/* Fall through */
+		fallthrough;
 	case MLX5_CQE_RESP_SEND:
 		mlx5_fpga_conn_rq_cqe(conn, cqe, status);
 		break;
-- 
2.24.0

[PATCH -next 003/491] MELLANOX MLX5 core VPI driver: Use fallthrough;

[Joe Perches]

Convert the various uses of fallthrough comments to fallthrough;

Done via script
Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/

Signed-off-by: Joe Perches <joe@perches.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h         | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c          | 4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c      | 2 +-
 .../net/ethernet/mellanox/mlx5/core/eswitch_offloads.c    | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c          | 8 ++++----
 drivers/net/ethernet/mellanox/mlx5/core/vport.c           | 2 +-
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index a226277..2a1cc2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -223,7 +223,7 @@ mlx5e_set_eseg_swp(struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg,
 	switch (swp_spec->tun_l4_proto) {
 	case IPPROTO_UDP:
 		eseg->swp_flags |= MLX5_ETH_WQE_SWP_INNER_L4_UDP;
-		/* fall through */
+		fallthrough;
 	case IPPROTO_TCP:
 		eseg->swp_inner_l4_offset = skb_inner_transport_offset(skb) / 2;
 		break;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
index f049e0a..f74e50 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
@@ -167,11 +167,11 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
 		return true;
 	default:
 		bpf_warn_invalid_xdp_action(act);
-		/* fall through */
+		fallthrough;
 	case XDP_ABORTED:
 xdp_abort:
 		trace_xdp_exception(rq->netdev, prog, act);
-		/* fall through */
+		fallthrough;
 	case XDP_DROP:
 		rq->stats->xdp_drop++;
 		return true;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 01539b8..8a3376a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -225,7 +225,7 @@ int mlx5e_ethtool_get_sset_count(struct mlx5e_priv *priv, int sset)
 		return MLX5E_NUM_PFLAGS;
 	case ETH_SS_TEST:
 		return mlx5e_self_test_num(priv);
-	/* fallthrough */
+		fallthrough;
 	default:
 		return -EOPNOTSUPP;
 	}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 4b5b661..033454 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -2426,7 +2426,7 @@ int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
 	case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
 		if (mode == DEVLINK_ESWITCH_INLINE_MODE_NONE)
 			return 0;
-		/* fall through */
+		fallthrough;
 	case MLX5_CAP_INLINE_MODE_L2:
 		NL_SET_ERR_MSG_MOD(extack, "Inline mode can't be set");
 		return -EOPNOTSUPP;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
index 416676..a40e43 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
@@ -199,13 +199,13 @@ static void mlx5_lag_fib_update(struct work_struct *work)
 	/* Protect internal structures from changes */
 	rtnl_lock();
 	switch (fib_work->event) {
-	case FIB_EVENT_ENTRY_REPLACE: /* fall through */
+	case FIB_EVENT_ENTRY_REPLACE:
 	case FIB_EVENT_ENTRY_DEL:
 		mlx5_lag_fib_route_event(ldev, fib_work->event,
 					 fib_work->fen_info.fi);
 		fib_info_put(fib_work->fen_info.fi);
 		break;
-	case FIB_EVENT_NH_ADD: /* fall through */
+	case FIB_EVENT_NH_ADD:
 	case FIB_EVENT_NH_DEL:
 		fib_nh = fib_work->fnh_info.fib_nh;
 		mlx5_lag_fib_nexthop_event(ldev,
@@ -256,7 +256,7 @@ static int mlx5_lag_fib_event(struct notifier_block *nb,
 		return NOTIFY_DONE;
 
 	switch (event) {
-	case FIB_EVENT_ENTRY_REPLACE: /* fall through */
+	case FIB_EVENT_ENTRY_REPLACE:
 	case FIB_EVENT_ENTRY_DEL:
 		fen_info = container_of(info, struct fib_entry_notifier_info,
 					info);
@@ -279,7 +279,7 @@ static int mlx5_lag_fib_event(struct notifier_block *nb,
 		 */
 		fib_info_hold(fib_work->fen_info.fi);
 		break;
-	case FIB_EVENT_NH_ADD: /* fall through */
+	case FIB_EVENT_NH_ADD:
 	case FIB_EVENT_NH_DEL:
 		fnh_info = container_of(info, struct fib_nh_notifier_info,
 					info);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vport.c b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
index 1faac31f..aea1065 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/vport.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
@@ -125,7 +125,7 @@ void mlx5_query_min_inline(struct mlx5_core_dev *mdev,
 	case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
 		if (!mlx5_query_nic_vport_min_inline(mdev, 0, min_inline_mode))
 			break;
-		/* fall through */
+		fallthrough;
 	case MLX5_CAP_INLINE_MODE_L2:
 		*min_inline_mode = MLX5_INLINE_MODE_L2;
 		break;
-- 
2.24.0

Re: [PATCH -next 003/491] MELLANOX MLX5 core VPI driver: Use fallthrough;

[Leon Romanovsky]

On Tue, Mar 10, 2020 at 09:51:17PM -0700, Joe Perches wrote:
> Convert the various uses of fallthrough comments to fallthrough;
>
> Done via script
> Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/
>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h         | 2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c          | 4 ++--
>  drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c      | 2 +-
>  .../net/ethernet/mellanox/mlx5/core/eswitch_offloads.c    | 2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c          | 8 ++++----
>  drivers/net/ethernet/mellanox/mlx5/core/vport.c           | 2 +-
>  6 files changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
> index a226277..2a1cc2 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
> @@ -223,7 +223,7 @@ mlx5e_set_eseg_swp(struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg,
>  	switch (swp_spec->tun_l4_proto) {
>  	case IPPROTO_UDP:
>  		eseg->swp_flags |= MLX5_ETH_WQE_SWP_INNER_L4_UDP;
> -		/* fall through */
> +		fallthrough;
>  	case IPPROTO_TCP:
>  		eseg->swp_inner_l4_offset = skb_inner_transport_offset(skb) / 2;
>  		break;
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> index f049e0a..f74e50 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> @@ -167,11 +167,11 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
>  		return true;
>  	default:
>  		bpf_warn_invalid_xdp_action(act);
> -		/* fall through */
> +		fallthrough;
>  	case XDP_ABORTED:
>  xdp_abort:
>  		trace_xdp_exception(rq->netdev, prog, act);
> -		/* fall through */
> +		fallthrough;
>  	case XDP_DROP:
>  		rq->stats->xdp_drop++;
>  		return true;
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> index 01539b8..8a3376a 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> @@ -225,7 +225,7 @@ int mlx5e_ethtool_get_sset_count(struct mlx5e_priv *priv, int sset)
>  		return MLX5E_NUM_PFLAGS;
>  	case ETH_SS_TEST:
>  		return mlx5e_self_test_num(priv);
> -	/* fallthrough */
> +		fallthrough;

This should be removed, there is return before.

>  	default:
>  		return -EOPNOTSUPP;
>  	}
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> index 4b5b661..033454 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> @@ -2426,7 +2426,7 @@ int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
>  	case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
>  		if (mode == DEVLINK_ESWITCH_INLINE_MODE_NONE)
>  			return 0;
> -		/* fall through */
> +		fallthrough;
>  	case MLX5_CAP_INLINE_MODE_L2:
>  		NL_SET_ERR_MSG_MOD(extack, "Inline mode can't be set");
>  		return -EOPNOTSUPP;
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
> index 416676..a40e43 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
> @@ -199,13 +199,13 @@ static void mlx5_lag_fib_update(struct work_struct *work)
>  	/* Protect internal structures from changes */
>  	rtnl_lock();
>  	switch (fib_work->event) {
> -	case FIB_EVENT_ENTRY_REPLACE: /* fall through */
> +	case FIB_EVENT_ENTRY_REPLACE:
>  	case FIB_EVENT_ENTRY_DEL:
>  		mlx5_lag_fib_route_event(ldev, fib_work->event,
>  					 fib_work->fen_info.fi);
>  		fib_info_put(fib_work->fen_info.fi);
>  		break;
> -	case FIB_EVENT_NH_ADD: /* fall through */
> +	case FIB_EVENT_NH_ADD:
>  	case FIB_EVENT_NH_DEL:
>  		fib_nh = fib_work->fnh_info.fib_nh;
>  		mlx5_lag_fib_nexthop_event(ldev,
> @@ -256,7 +256,7 @@ static int mlx5_lag_fib_event(struct notifier_block *nb,
>  		return NOTIFY_DONE;
>
>  	switch (event) {
> -	case FIB_EVENT_ENTRY_REPLACE: /* fall through */
> +	case FIB_EVENT_ENTRY_REPLACE:
>  	case FIB_EVENT_ENTRY_DEL:
>  		fen_info = container_of(info, struct fib_entry_notifier_info,
>  					info);
> @@ -279,7 +279,7 @@ static int mlx5_lag_fib_event(struct notifier_block *nb,
>  		 */
>  		fib_info_hold(fib_work->fen_info.fi);
>  		break;
> -	case FIB_EVENT_NH_ADD: /* fall through */
> +	case FIB_EVENT_NH_ADD:
>  	case FIB_EVENT_NH_DEL:
>  		fnh_info = container_of(info, struct fib_nh_notifier_info,
>  					info);
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vport.c b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
> index 1faac31f..aea1065 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/vport.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/vport.c
> @@ -125,7 +125,7 @@ void mlx5_query_min_inline(struct mlx5_core_dev *mdev,
>  	case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
>  		if (!mlx5_query_nic_vport_min_inline(mdev, 0, min_inline_mode))
>  			break;
> -		/* fall through */
> +		fallthrough;
>  	case MLX5_CAP_INLINE_MODE_L2:
>  		*min_inline_mode = MLX5_INLINE_MODE_L2;
>  		break;
> --
> 2.24.0
>

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[Leon Romanovsky]

On Tue, Mar 10, 2020 at 09:51:15PM -0700, Joe Perches wrote:
> Convert the various uses of fallthrough comments to fallthrough;
>
> Done via script
> Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/
>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c | 2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c        | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
>

Thanks,
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[David Miller]

Joe, please use Subject line subsystem prefixes consistent with what would
be used for other changes to these drivers.

Thank you.

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[Joe Perches]

On Wed, 2020-03-11 at 23:23 -0700, David Miller wrote:
> Joe, please use Subject line subsystem prefixes consistent with what would
> be used for other changes to these drivers.

Not easy to do for scripted patches.
There's no mechanism that scriptable.

I'm not going to hand-edit 500 patches.

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[David Miller]

From: Joe Perches <joe@perches.com>
Date: Wed, 11 Mar 2020 23:26:59 -0700

> I'm not going to hand-edit 500 patches.

Then I'm not applying your stuff, it's as simple as that.

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[Jakub Kicinski]

On Wed, 11 Mar 2020 23:26:59 -0700 Joe Perches wrote:
> On Wed, 2020-03-11 at 23:23 -0700, David Miller wrote:
> > Joe, please use Subject line subsystem prefixes consistent with what would
> > be used for other changes to these drivers.  
> 
> Not easy to do for scripted patches.
> There's no mechanism that scriptable.

I have this to show me the top 3 prefixes used for files currently
modified in my tree:

tgs() {
    local fs

    fs=$(git status -s | sed -n 's/ M //p')

    git log --oneline --no-merges -- $fs | \
	sed -e's/[^ ]* \(.*\):[^:]*/\1/' | \
	sort | uniq -c | sort -rn | head -3
}

You could probably massage it to just give you to top one and feed 
that into git commit template?

Re: [PATCH -next 001/491] MELLANOX ETHERNET INNOVA DRIVERS: Use fallthrough;

[Joe Perches]

On Thu, 2020-03-12 at 12:45 -0700, Jakub Kicinski wrote:
> On Wed, 11 Mar 2020 23:26:59 -0700 Joe Perches wrote:
> > On Wed, 2020-03-11 at 23:23 -0700, David Miller wrote:
> > > Joe, please use Subject line subsystem prefixes consistent with what would
> > > be used for other changes to these drivers.  
> > 
> > Not easy to do for scripted patches.
> > There's no mechanism that scriptable.
> 
> I have this to show me the top 3 prefixes used for files currently
> modified in my tree:
> 
> tgs() {
>     local fs
> 
>     fs=$(git status -s | sed -n 's/ M //p')
> 
>     git log --oneline --no-merges -- $fs | \
> 	sed -e's/[^ ]* \(.*\):[^:]*/\1/' | \
> 	sort | uniq -c | sort -rn | head -3
> }
> 
> You could probably massage it to just give you to top one and feed 
> that into git commit template?

I had already tried that via:

$ cat get_patch_subject_prefix.bash 
#!/bin/bash
git log --format="%s" --no-merges -200 --since=2-years-ago $@ | \
  cut -f1 -d":" | \
  sort  | uniq -c | sort -rn | head -1 | \
  sed 's/^[[:space:]]*[[:digit:]]*[[:space:]]*//'
$ 

It doesn't work very well for many of the subsystems.

For instance, this script produces things like:

ARM/ZYNQ ARCHITECTURE: treewide
FCOE SUBSYSTEM (libfc, libfcoe, fcoe): scsi
WOLFSON MICROELECTRONICS DRIVERS: ASoC

There isn't a great single mechanism for this.

At various times, I have proposed adding a grammar for
patch subject titles to MAINTAINERS.

Like:
https://lore.kernel.org/lkml/1289919077.28741.50.camel@Joe-Laptop/