[PATCH v2] net: add ETH_P_802_3_MIN
From: Simon Horman <hidden>
Date: 2013-03-28 04:38:59
Also in:
bridge, linux-bluetooth, linux-media, linux-wireless, netfilter-devel
Subsystem:
802.11 (including cfg80211/nl80211), atm, bluetooth subsystem, ethernet bridge, firewire subsystem, mac80211, media input infrastructure (v4l/dvb), networking drivers, networking drivers (wireless), networking [general], openvswitch, the rest · Maintainers:
Johannes Berg, Chas Williams, Marcel Holtmann, Luiz Augusto von Dentz, Nikolay Aleksandrov, Ido Schimmel, Takashi Sakamoto, Mauro Carvalho Chehab, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Aaron Conole, Eelco Chaudron, Ilya Maximets, Linus Torvalds
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 David Miller and I could find to use the new constant. Also correct a bug in util.c. The comparison with ETH_P_802_3_MIN should be >= not >. As suggested by Jesse Gross. Compile tested only. Cc: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> Cc: Jesse Gross <redacted> Cc: Karsten Keil <redacted> Cc: John W. Linville <redacted> Cc: Johannes Berg <redacted> Cc: Bart De Schuymer <redacted> Cc: Stephen Hemminger <redacted> Cc: Patrick McHardy <redacted> Cc: Marcel Holtmann <redacted> Cc: Gustavo Padovan <redacted> Cc: Johan Hedberg <redacted> Cc: linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: netfilter-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: bridge-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux1394-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Cc: linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org Acked-by: Mauro Carvalho Chehab <redacted> Acked-by: Stefan Richter <stefanr-MtYdepGKPcBMYopoZt5u/LNAH6kLmebB@public.gmane.org> Signed-off-by: Simon Horman <horms-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org> --- v2 * Make updates to the following files as suggested by David Miller - drivers/media/dvb-core/dvb_net.c - drivers/net/wireless/ray_cs.c - net/bridge/netfilter/ebtables.c - include/linux/if_vlan.h - net/bluetooth/bnep/netdev.c - net/openvswitch/flow.c - net/mac80211/tx.c - net/wireless/util.c --- drivers/firewire/net.c | 2 +- drivers/isdn/i4l/isdn_net.c | 2 +- drivers/media/dvb-core/dvb_net.c | 10 +++++----- drivers/net/ethernet/sun/niu.c | 2 +- drivers/net/plip/plip.c | 2 +- drivers/net/wireless/ray_cs.c | 2 +- include/linux/if_vlan.h | 2 +- include/uapi/linux/if_ether.h | 3 +++ net/atm/lec.h | 2 +- net/bluetooth/bnep/netdev.c | 2 +- net/bridge/netfilter/ebtables.c | 2 +- net/ethernet/eth.c | 2 +- net/mac80211/tx.c | 2 +- net/openvswitch/datapath.c | 2 +- net/openvswitch/flow.c | 6 +++--- net/wireless/util.c | 2 +- 16 files changed, 24 insertions(+), 21 deletions(-)
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 5679633..4d56536 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c@@ -547,7 +547,7 @@ 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..83a23af 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; }
@@ -320,7 +320,7 @@ static int handle_ule_extensions( struct dvb_net_priv *p ) (int) p->ule_sndu_type, l, total_ext_len); #endif - } while (p->ule_sndu_type < 1536); + } while (p->ule_sndu_type < ETH_P_802_3_MIN); return total_ext_len; }
@@ -712,7 +712,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) } /* Handle ULE Extension Headers. */ - if (priv->ule_sndu_type < 1536) { + if (priv->ule_sndu_type < ETH_P_802_3_MIN) { /* There is an extension header. Handle it accordingly. */ int l = handle_ule_extensions(priv); if (l < 0) {
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/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c
index 4775b5d..ebada81 100644
--- a/drivers/net/wireless/ray_cs.c
+++ b/drivers/net/wireless/ray_cs.c@@ -953,7 +953,7 @@ static int translate_frame(ray_dev_t *local, struct tx_msg __iomem *ptx, unsigned char *data, int len) { __be16 proto = ((struct ethhdr *)data)->h_proto; - if (ntohs(proto) >= 1536) { /* DIX II ethernet frame */ + if (ntohs(proto) >= ETH_P_802_3_MIN) { /* DIX II ethernet frame */ pr_debug("ray_cs translate_frame DIX II\n"); /* Copy LLC header to card buffer */ memcpy_toio(&ptx->var, eth2_llc, sizeof(eth2_llc));
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 218a3b6..70962f3 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h@@ -339,7 +339,7 @@ static inline void vlan_set_encap_proto(struct sk_buff *skb, */ proto = vhdr->h_vlan_encapsulated_proto; - if (ntohs(proto) >= 1536) { + if (ntohs(proto) >= ETH_P_802_3_MIN) { skb->protocol = proto; return; }
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/atm/lec.h b/net/atm/lec.h
index a86aff9..4149db1 100644
--- a/net/atm/lec.h
+++ b/net/atm/lec.h@@ -58,7 +58,7 @@ struct lane2_ops { * field in h_type field. Data follows immediately after header. * 2. LLC Data frames whose total length, including LLC field and data, * but not padding required to meet the minimum data frame length, - * is less than 1536(0x0600) MUST be encoded by placing that length + * is less than ETH_P_802_3_MIN MUST be encoded by placing that length * in the h_type field. The LLC field follows header immediately. * 3. LLC data frames longer than this maximum MUST be encoded by placing * the value 0 in the h_type field.
diff --git a/net/bluetooth/bnep/netdev.c b/net/bluetooth/bnep/netdev.c
index e58c8b3..4b488ec 100644
--- a/net/bluetooth/bnep/netdev.c
+++ b/net/bluetooth/bnep/netdev.c@@ -136,7 +136,7 @@ static u16 bnep_net_eth_proto(struct sk_buff *skb) struct ethhdr *eh = (void *) skb->data; u16 proto = ntohs(eh->h_proto); - if (proto >= 1536) + if (proto >= ETH_P_802_3_MIN) return proto; if (get_unaligned((__be16 *) skb->data) == htons(0xFFFF))
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 8d493c9..3d110c4 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c@@ -138,7 +138,7 @@ ebt_basic_match(const struct ebt_entry *e, const struct sk_buff *skb, ethproto = h->h_proto; if (e->bitmask & EBT_802_3) { - if (FWINV2(ntohs(ethproto) >= 1536, EBT_IPROTO)) + if (FWINV2(ntohs(ethproto) >= ETH_P_802_3_MIN, EBT_IPROTO)) return 1; } else if (!(e->bitmask & EBT_NOPROTO) && FWINV2(e->ethproto != ethproto, EBT_IPROTO))
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/mac80211/tx.c b/net/mac80211/tx.c
index 8914d2d..4e8a861 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c@@ -2085,7 +2085,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, encaps_data = bridge_tunnel_header; encaps_len = sizeof(bridge_tunnel_header); skip_header_bytes -= 2; - } else if (ethertype >= 0x600) { + } else if (ethertype >= ETH_P_802_3_MIN) { encaps_data = rfc1042_header; encaps_len = sizeof(rfc1042_header); skip_header_bytes -= 2;
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);
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index fe0e421..3324868 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c@@ -466,7 +466,7 @@ static __be16 parse_ethertype(struct sk_buff *skb) proto = *(__be16 *) skb->data; __skb_pull(skb, sizeof(__be16)); - if (ntohs(proto) >= 1536) + if (ntohs(proto) >= ETH_P_802_3_MIN) return proto; if (skb->len < sizeof(struct llc_snap_hdr))
@@ -483,7 +483,7 @@ static __be16 parse_ethertype(struct sk_buff *skb) __skb_pull(skb, sizeof(struct llc_snap_hdr)); - if (ntohs(llc->ethertype) >= 1536) + if (ntohs(llc->ethertype) >= ETH_P_802_3_MIN) return llc->ethertype; return htons(ETH_P_802_2);
@@ -1038,7 +1038,7 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp, if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { swkey->eth.type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); - if (ntohs(swkey->eth.type) < 1536) + if (ntohs(swkey->eth.type) < ETH_P_802_3_MIN) return -EINVAL; attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); } else {
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 37a56ee..6cbac99 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c@@ -511,7 +511,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, encaps_data = bridge_tunnel_header; encaps_len = sizeof(bridge_tunnel_header); skip_header_bytes -= 2; - } else if (ethertype > 0x600) { + } else if (ethertype >= ETH_P_802_3_MIN) { encaps_data = rfc1042_header; encaps_len = sizeof(rfc1042_header); skip_header_bytes -= 2;
--
1.7.10.4