Re: [PATCH 1/4] net: sctp: Rename fallthrough label to unhandled

From: Neil Horman <nhorman@tuxdriver.com>
To: Joe Perches <joe@perches.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Vlad Yasevich <vyasevich@gmail.com>,
	Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
	Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
	Kees Cook <keescook@chromium.org>, Borislav Petkov <bp@alien8.de>,
	"H . Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>, Pavel Machek <pavel@ucw.cz>,
	"Gustavo A . R . Silva" <gustavo@embeddedor.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Kan Liang <kan.liang@linux.intel.com>,
	Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@redhat.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Shawn Landden <shawn@git.icu>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	Nathan Chancellor <natechancellor@gmail.com>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	David Miller <davem@davemloft.net>,
	clang-built-linux@googlegroups.com, linux-sctp@vger.kernel.org,
	netdev@vger.kernel.org
Subject: Re: [PATCH 1/4] net: sctp: Rename fallthrough label to unhandled
Date: Fri, 11 Oct 2019 08:20:37 -0400	[thread overview]
Message-ID: <20191011122037.GA16269@hmswarspite.think-freely.org> (raw)
In-Reply-To: <2e0111756153d81d77248bc8356bac78925923dc.1570292505.git.joe@perches.com>

On Sat, Oct 05, 2019 at 09:46:41AM -0700, Joe Perches wrote:
> fallthrough may become a pseudo reserved keyword so this only use of
> fallthrough is better renamed to allow it.
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  net/sctp/sm_make_chunk.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
> index e41ed2e0ae7d..48d63956a68c 100644
> --- a/net/sctp/sm_make_chunk.c
> +++ b/net/sctp/sm_make_chunk.c
> @@ -2155,7 +2155,7 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
>  	case SCTP_PARAM_SET_PRIMARY:
>  		if (ep->asconf_enable)
>  			break;
> -		goto fallthrough;
> +		goto unhandled;
>  
>  	case SCTP_PARAM_HOST_NAME_ADDRESS:
>  		/* Tell the peer, we won't support this param.  */
> @@ -2166,11 +2166,11 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
>  	case SCTP_PARAM_FWD_TSN_SUPPORT:
>  		if (ep->prsctp_enable)
>  			break;
> -		goto fallthrough;
> +		goto unhandled;
>  
>  	case SCTP_PARAM_RANDOM:
>  		if (!ep->auth_enable)
> -			goto fallthrough;
> +			goto unhandled;
>  
>  		/* SCTP-AUTH: Secion 6.1
>  		 * If the random number is not 32 byte long the association
> @@ -2187,7 +2187,7 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
>  
>  	case SCTP_PARAM_CHUNKS:
>  		if (!ep->auth_enable)
> -			goto fallthrough;
> +			goto unhandled;
>  
>  		/* SCTP-AUTH: Section 3.2
>  		 * The CHUNKS parameter MUST be included once in the INIT or
> @@ -2203,7 +2203,7 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
>  
>  	case SCTP_PARAM_HMAC_ALGO:
>  		if (!ep->auth_enable)
> -			goto fallthrough;
> +			goto unhandled;
>  
>  		hmacs = (struct sctp_hmac_algo_param *)param.p;
>  		n_elt = (ntohs(param.p->length) -
> @@ -2226,7 +2226,7 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
>  			retval = SCTP_IERROR_ABORT;
>  		}
>  		break;
> -fallthrough:
> +unhandled:
>  	default:
>  		pr_debug("%s: unrecognized param:%d for chunk:%d\n",
>  			 __func__, ntohs(param.p->type), cid);
> -- 
> 2.15.0
> 
> 
I'm still not a fan of the pseudo keyword fallthrough, but I don't have
a problem in renaming the label, so

Acked-by: Neil Horman <nhorman@tuxdriver.com>