From patchwork Thu Mar 21 08:29:28 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2311481 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 5EA4A40213 for ; Thu, 21 Mar 2013 08:30:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933177Ab3CUIaJ (ORCPT ); Thu, 21 Mar 2013 04:30:09 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:51770 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932356Ab3CUIaH (ORCPT ); Thu, 21 Mar 2013 04:30:07 -0400 Received: from ayumi.akashicho.tokyo.vergenet.net (p8120-ipbfp1001kobeminato.hyogo.ocn.ne.jp [118.10.137.120]) by kirsty.vergenet.net (Postfix) with ESMTP id 596A625BE74; Thu, 21 Mar 2013 19:30:05 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id DB96FEDE148; Thu, 21 Mar 2013 17:30:03 +0900 (JST) From: Simon Horman To: netdev@vger.kernel.org Cc: "David S. Miller" , Simon Horman , Jesse Gross , Stefan Richter , Karsten Keil , Mauro Carvalho Chehab , linux1394-devel@lists.sourceforge.net, linux-media@vger.kernel.org, dev@openvswitch.org Subject: [PATCH] net: add ETH_P_802_3_MIN Date: Thu, 21 Mar 2013 17:29:28 +0900 Message-Id: <1363854568-32228-1-git-send-email-horms@verge.net.au> X-Mailer: git-send-email 1.7.10.4 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add a new constant ETH_P_802_3_MIN, the minimum ethernet type for an 802.3 frame. Frames with a lower value in the ethernet type field are Ethernet II. Also update all the users of this value that I could find to use the new constant. I anticipate adding some more users of this constant when adding MPLS support to Open vSwtich. As suggested by Jesse Gross. Compile tested only. Cc: Jesse Gross Cc: Stefan Richter Cc: Karsten Keil Cc: Mauro Carvalho Chehab Cc: linux1394-devel@lists.sourceforge.net Cc: linux-media@vger.kernel.org Cc: dev@openvswitch.org Signed-off-by: Simon Horman Acked-by: Stefan Richter Acked-by: Mauro Carvalho Chehab --- drivers/firewire/net.c | 2 +- drivers/isdn/i4l/isdn_net.c | 2 +- drivers/media/dvb-core/dvb_net.c | 6 +++--- drivers/net/ethernet/sun/niu.c | 2 +- drivers/net/plip/plip.c | 2 +- include/uapi/linux/if_ether.h | 3 +++ net/ethernet/eth.c | 2 +- net/openvswitch/datapath.c | 2 +- 8 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c index 2b27bff..bd34ca1 100644 --- a/drivers/firewire/net.c +++ b/drivers/firewire/net.c @@ -630,7 +630,7 @@ static int fwnet_finish_incoming_packet(struct net_device *net, if (memcmp(eth->h_dest, net->dev_addr, net->addr_len)) skb->pkt_type = PACKET_OTHERHOST; } - if (ntohs(eth->h_proto) >= 1536) { + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) { protocol = eth->h_proto; } else { rawp = (u16 *)skb->data; diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c index babc621..88d657d 100644 --- a/drivers/isdn/i4l/isdn_net.c +++ b/drivers/isdn/i4l/isdn_net.c @@ -1385,7 +1385,7 @@ isdn_net_type_trans(struct sk_buff *skb, struct net_device *dev) if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN)) skb->pkt_type = PACKET_OTHERHOST; } - if (ntohs(eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) return eth->h_proto; rawp = skb->data; diff --git a/drivers/media/dvb-core/dvb_net.c b/drivers/media/dvb-core/dvb_net.c index 44225b1..9fc82a1 100644 --- a/drivers/media/dvb-core/dvb_net.c +++ b/drivers/media/dvb-core/dvb_net.c @@ -185,7 +185,7 @@ static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, skb->pkt_type=PACKET_MULTICAST; } - if (ntohs(eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) return eth->h_proto; rawp = skb->data; @@ -228,9 +228,9 @@ static int ule_test_sndu( struct dvb_net_priv *p ) static int ule_bridged_sndu( struct dvb_net_priv *p ) { struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; - if(ntohs(hdr->h_proto) < 1536) { + if(ntohs(hdr->h_proto) < ETH_P_802_3_MIN) { int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); - /* A frame Type < 1536 for a bridged frame, introduces a LLC Length field. */ + /* A frame Type < ETH_P_802_3_MIN for a bridged frame, introduces a LLC Length field. */ if(framelen != ntohs(hdr->h_proto)) { return -1; } diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index e4c1c88..95cff98 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -6618,7 +6618,7 @@ static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr, (len << TXHDR_LEN_SHIFT) | ((l3off / 2) << TXHDR_L3START_SHIFT) | (ihl << TXHDR_IHL_SHIFT) | - ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) | + ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) | ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) | (ipv6 ? TXHDR_IP_VER : 0) | csum_bits); diff --git a/drivers/net/plip/plip.c b/drivers/net/plip/plip.c index bed62d9..1f7bef9 100644 --- a/drivers/net/plip/plip.c +++ b/drivers/net/plip/plip.c @@ -560,7 +560,7 @@ static __be16 plip_type_trans(struct sk_buff *skb, struct net_device *dev) * so don't forget to remove it. */ - if (ntohs(eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) return eth->h_proto; rawp = skb->data; diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h index 798032d..ade07f1 100644 --- a/include/uapi/linux/if_ether.h +++ b/include/uapi/linux/if_ether.h @@ -94,6 +94,9 @@ #define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */ #define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_802_3_MIN 0x0600 /* If the value in the ethernet type is less than this value + * then the frame is Ethernet II. Else it is 802.3 */ + /* * Non DIX types. Won't clash for 1500 types. */ diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index a36c85ea..5359560 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -195,7 +195,7 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev) if (netdev_uses_trailer_tags(dev)) return htons(ETH_P_TRAILER); - if (ntohs(eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) return eth->h_proto; /* diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index d61cd99..8759265 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -681,7 +681,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) /* Normally, setting the skb 'protocol' field would be handled by a * call to eth_type_trans(), but it assumes there's a sending * device, which we may not have. */ - if (ntohs(eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) packet->protocol = eth->h_proto; else packet->protocol = htons(ETH_P_802_2);