diff options
Diffstat (limited to 'net/8021q/vlan_dev.c')
-rw-r--r-- | net/8021q/vlan_dev.c | 484 |
1 files changed, 231 insertions, 253 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 4f99bb86af5..8059fa42b08 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -3,7 +3,7 @@ * Ethernet-type device handling. * * Authors: Ben Greear <greearb@candelatech.com> - * Please send support related email to: vlan@scry.wanfear.com + * Please send support related email to: netdev@vger.kernel.org * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html * * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> @@ -47,7 +47,7 @@ * * TODO: This needs a checkup, I'm ignorant here. --BLG */ -int vlan_dev_rebuild_header(struct sk_buff *skb) +static int vlan_dev_rebuild_header(struct sk_buff *skb) { struct net_device *dev = skb->dev; struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); @@ -60,9 +60,8 @@ int vlan_dev_rebuild_header(struct sk_buff *skb) return arp_find(veth->h_dest, skb); #endif default: - printk(VLAN_DBG - "%s: unable to resolve type %X addresses.\n", - dev->name, ntohs(veth->h_vlan_encapsulated_proto)); + pr_debug("%s: unable to resolve type %X addresses.\n", + dev->name, ntohs(veth->h_vlan_encapsulated_proto)); memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); break; @@ -73,7 +72,7 @@ int vlan_dev_rebuild_header(struct sk_buff *skb) static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) { - if (VLAN_DEV_INFO(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { + if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { if (skb_shared(skb) || skb_cloned(skb)) { struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC); kfree_skb(skb); @@ -90,6 +89,40 @@ static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) return skb; } +static inline void vlan_set_encap_proto(struct sk_buff *skb, + struct vlan_hdr *vhdr) +{ + __be16 proto; + unsigned char *rawp; + + /* + * Was a VLAN packet, grab the encapsulated protocol, which the layer + * three protocols care about. + */ + + proto = vhdr->h_vlan_encapsulated_proto; + if (ntohs(proto) >= 1536) { + skb->protocol = proto; + return; + } + + rawp = skb->data; + if (*(unsigned short *)rawp == 0xFFFF) + /* + * This is a magic hack to spot IPX packets. Older Novell + * breaks the protocol design and runs IPX over 802.3 without + * an 802.2 LLC layer. We look for FFFF which isn't a used + * 802.2 SSAP/DSAP. This won't work for fault tolerant netware + * but does for the rest. + */ + skb->protocol = htons(ETH_P_802_3); + else + /* + * Real 802.2 LLC + */ + skb->protocol = htons(ETH_P_802_2); +} + /* * Determine the packet's protocol ID. The rule here is that we * assume 802.3 if the type field is short enough to be a length. @@ -107,115 +140,58 @@ static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be * stored UNALIGNED in the memory. RISC systems don't like * such cases very much... - * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be aligned, - * so there doesn't need to be any of the unaligned stuff. It has - * been commented out now... --Ben + * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be + * aligned, so there doesn't need to be any of the unaligned + * stuff. It has been commented out now... --Ben * */ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, - struct packet_type* ptype, struct net_device *orig_dev) + struct packet_type *ptype, struct net_device *orig_dev) { - unsigned char *rawp = NULL; struct vlan_hdr *vhdr; unsigned short vid; struct net_device_stats *stats; unsigned short vlan_TCI; - __be16 proto; - if (dev->nd_net != &init_net) { - kfree_skb(skb); - return -1; - } + if (dev->nd_net != &init_net) + goto err_free; - if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) - return -1; + skb = skb_share_check(skb, GFP_ATOMIC); + if (skb == NULL) + goto err_free; - if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) { - kfree_skb(skb); - return -1; - } - - vhdr = (struct vlan_hdr *)(skb->data); + if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) + goto err_free; - /* vlan_TCI = ntohs(get_unaligned(&vhdr->h_vlan_TCI)); */ + vhdr = (struct vlan_hdr *)skb->data; vlan_TCI = ntohs(vhdr->h_vlan_TCI); - vid = (vlan_TCI & VLAN_VID_MASK); -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: skb: %p vlan_id: %hx\n", - __FUNCTION__, skb, vid); -#endif - - /* Ok, we will find the correct VLAN device, strip the header, - * and then go on as usual. - */ - - /* We have 12 bits of vlan ID. - * - * We must not drop allow preempt until we hold a - * reference to the device (netif_rx does that) or we - * fail. - */ - rcu_read_lock(); skb->dev = __find_vlan_dev(dev, vid); if (!skb->dev) { - rcu_read_unlock(); - -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: ERROR: No net_device for VID: %i on dev: %s [%i]\n", - __FUNCTION__, (unsigned int)(vid), dev->name, dev->ifindex); -#endif - kfree_skb(skb); - return -1; + pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", + __FUNCTION__, (unsigned int)vid, dev->name); + goto err_unlock; } skb->dev->last_rx = jiffies; - /* Bump the rx counters for the VLAN device. */ - stats = vlan_dev_get_stats(skb->dev); + stats = &skb->dev->stats; stats->rx_packets++; stats->rx_bytes += skb->len; - /* Take off the VLAN header (4 bytes currently) */ skb_pull_rcsum(skb, VLAN_HLEN); - /* Ok, lets check to make sure the device (dev) we - * came in on is what this VLAN is attached to. - */ - - if (dev != VLAN_DEV_INFO(skb->dev)->real_dev) { - rcu_read_unlock(); - -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: dropping skb: %p because came in on wrong device, dev: %s real_dev: %s, skb_dev: %s\n", - __FUNCTION__, skb, dev->name, - VLAN_DEV_INFO(skb->dev)->real_dev->name, - skb->dev->name); -#endif - kfree_skb(skb); - stats->rx_errors++; - return -1; - } - - /* - * Deal with ingress priority mapping. - */ - skb->priority = vlan_get_ingress_priority(skb->dev, ntohs(vhdr->h_vlan_TCI)); + skb->priority = vlan_get_ingress_priority(skb->dev, + ntohs(vhdr->h_vlan_TCI)); -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: priority: %lu for TCI: %hu (hbo)\n", - __FUNCTION__, (unsigned long)(skb->priority), - ntohs(vhdr->h_vlan_TCI)); -#endif + pr_debug("%s: priority: %u for TCI: %hu\n", + __FUNCTION__, skb->priority, ntohs(vhdr->h_vlan_TCI)); - /* The ethernet driver already did the pkt_type calculations - * for us... - */ switch (skb->pkt_type) { case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ - // stats->broadcast ++; // no such counter :-( + /* stats->broadcast ++; // no such counter :-( */ break; case PACKET_MULTICAST: @@ -224,109 +200,47 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, case PACKET_OTHERHOST: /* Our lower layer thinks this is not local, let's make sure. - * This allows the VLAN to have a different MAC than the underlying - * device, and still route correctly. + * This allows the VLAN to have a different MAC than the + * underlying device, and still route correctly. */ - if (!compare_ether_addr(eth_hdr(skb)->h_dest, skb->dev->dev_addr)) { - /* It is for our (changed) MAC-address! */ + if (!compare_ether_addr(eth_hdr(skb)->h_dest, + skb->dev->dev_addr)) skb->pkt_type = PACKET_HOST; - } break; default: break; } - /* Was a VLAN packet, grab the encapsulated protocol, which the layer - * three protocols care about. - */ - /* proto = get_unaligned(&vhdr->h_vlan_encapsulated_proto); */ - proto = vhdr->h_vlan_encapsulated_proto; - - skb->protocol = proto; - if (ntohs(proto) >= 1536) { - /* place it back on the queue to be handled by - * true layer 3 protocols. - */ - - /* See if we are configured to re-write the VLAN header - * to make it look like ethernet... - */ - skb = vlan_check_reorder_header(skb); - - /* Can be null if skb-clone fails when re-ordering */ - if (skb) { - netif_rx(skb); - } else { - /* TODO: Add a more specific counter here. */ - stats->rx_errors++; - } - rcu_read_unlock(); - return 0; - } - - rawp = skb->data; - - /* - * This is a magic hack to spot IPX packets. Older Novell breaks - * the protocol design and runs IPX over 802.3 without an 802.2 LLC - * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This - * won't work for fault tolerant netware but does for the rest. - */ - if (*(unsigned short *)rawp == 0xFFFF) { - skb->protocol = htons(ETH_P_802_3); - /* place it back on the queue to be handled by true layer 3 protocols. - */ - - /* See if we are configured to re-write the VLAN header - * to make it look like ethernet... - */ - skb = vlan_check_reorder_header(skb); + vlan_set_encap_proto(skb, vhdr); - /* Can be null if skb-clone fails when re-ordering */ - if (skb) { - netif_rx(skb); - } else { - /* TODO: Add a more specific counter here. */ - stats->rx_errors++; - } - rcu_read_unlock(); - return 0; - } - - /* - * Real 802.2 LLC - */ - skb->protocol = htons(ETH_P_802_2); - /* place it back on the queue to be handled by upper layer protocols. - */ - - /* See if we are configured to re-write the VLAN header - * to make it look like ethernet... - */ skb = vlan_check_reorder_header(skb); - - /* Can be null if skb-clone fails when re-ordering */ - if (skb) { - netif_rx(skb); - } else { - /* TODO: Add a more specific counter here. */ + if (!skb) { stats->rx_errors++; + goto err_unlock; } + + netif_rx(skb); rcu_read_unlock(); - return 0; + return NET_RX_SUCCESS; + +err_unlock: + rcu_read_unlock(); +err_free: + kfree_skb(skb); + return NET_RX_DROP; } -static inline unsigned short vlan_dev_get_egress_qos_mask(struct net_device* dev, - struct sk_buff* skb) +static inline unsigned short +vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) { - struct vlan_priority_tci_mapping *mp = - VLAN_DEV_INFO(dev)->egress_priority_map[(skb->priority & 0xF)]; + struct vlan_priority_tci_mapping *mp; + mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; while (mp) { if (mp->priority == skb->priority) { - return mp->vlan_qos; /* This should already be shifted to mask - * correctly with the VLAN's TCI - */ + return mp->vlan_qos; /* This should already be shifted + * to mask correctly with the + * VLAN's TCI */ } mp = mp->next; } @@ -342,20 +256,20 @@ static inline unsigned short vlan_dev_get_egress_qos_mask(struct net_device* dev * This is called when the SKB is moving down the stack towards the * physical devices. */ -int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, - unsigned short type, - const void *daddr, const void *saddr, unsigned len) +static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, + unsigned short type, + const void *daddr, const void *saddr, + unsigned int len) { struct vlan_hdr *vhdr; unsigned short veth_TCI = 0; int rc = 0; int build_vlan_header = 0; - struct net_device *vdev = dev; /* save this for the bottom of the method */ + struct net_device *vdev = dev; -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: skb: %p type: %hx len: %x vlan_id: %hx, daddr: %p\n", - __FUNCTION__, skb, type, len, VLAN_DEV_INFO(dev)->vlan_id, daddr); -#endif + pr_debug("%s: skb: %p type: %hx len: %u vlan_id: %hx, daddr: %p\n", + __FUNCTION__, skb, type, len, vlan_dev_info(dev)->vlan_id, + daddr); /* build vlan header only if re_order_header flag is NOT set. This * fixes some programs that get confused when they see a VLAN device @@ -365,7 +279,7 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, * header shuffling in the hard_start_xmit. Users can turn off this * REORDER behaviour with the vconfig tool. */ - if (!(VLAN_DEV_INFO(dev)->flags & VLAN_FLAG_REORDER_HDR)) + if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) build_vlan_header = 1; if (build_vlan_header) { @@ -373,29 +287,28 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, /* build the four bytes that make this a VLAN header. */ - /* Now, construct the second two bytes. This field looks something - * like: + /* Now, construct the second two bytes. This field looks + * something like: * usr_priority: 3 bits (high bits) * CFI 1 bit * VLAN ID 12 bits (low bits) * */ - veth_TCI = VLAN_DEV_INFO(dev)->vlan_id; + veth_TCI = vlan_dev_info(dev)->vlan_id; veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); vhdr->h_vlan_TCI = htons(veth_TCI); /* - * Set the protocol type. - * For a packet of type ETH_P_802_3 we put the length in here instead. - * It is up to the 802.2 layer to carry protocol information. + * Set the protocol type. For a packet of type ETH_P_802_3 we + * put the length in here instead. It is up to the 802.2 + * layer to carry protocol information. */ - if (type != ETH_P_802_3) { + if (type != ETH_P_802_3) vhdr->h_vlan_encapsulated_proto = htons(type); - } else { + else vhdr->h_vlan_encapsulated_proto = htons(len); - } skb->protocol = htons(ETH_P_8021Q); skb_reset_network_header(skb); @@ -405,16 +318,16 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, if (saddr == NULL) saddr = dev->dev_addr; - dev = VLAN_DEV_INFO(dev)->real_dev; + dev = vlan_dev_info(dev)->real_dev; - /* MPLS can send us skbuffs w/out enough space. This check will grow the - * skb if it doesn't have enough headroom. Not a beautiful solution, so - * I'll tick a counter so that users can know it's happening... If they - * care... + /* MPLS can send us skbuffs w/out enough space. This check will grow + * the skb if it doesn't have enough headroom. Not a beautiful solution, + * so I'll tick a counter so that users can know it's happening... + * If they care... */ - /* NOTE: This may still break if the underlying device is not the final - * device (and thus there are more headers to add...) It should work for + /* NOTE: This may still break if the underlying device is not the final + * device (and thus there are more headers to add...) It should work for * good-ole-ethernet though. */ if (skb_headroom(skb) < dev->hard_header_len) { @@ -422,14 +335,12 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, skb = skb_realloc_headroom(sk_tmp, dev->hard_header_len); kfree_skb(sk_tmp); if (skb == NULL) { - struct net_device_stats *stats = vlan_dev_get_stats(vdev); + struct net_device_stats *stats = &vdev->stats; stats->tx_dropped++; return -ENOMEM; } - VLAN_DEV_INFO(vdev)->cnt_inc_headroom_on_tx++; -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: %s: had to grow skb.\n", __FUNCTION__, vdev->name); -#endif + vlan_dev_info(vdev)->cnt_inc_headroom_on_tx++; + pr_debug("%s: %s: had to grow skb\n", __FUNCTION__, vdev->name); } if (build_vlan_header) { @@ -441,19 +352,19 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, else if (rc < 0) rc -= VLAN_HLEN; } else - /* If here, then we'll just make a normal looking ethernet frame, - * but, the hard_start_xmit method will insert the tag (it has to - * be able to do this for bridged and other skbs that don't come - * down the protocol stack in an orderly manner. + /* If here, then we'll just make a normal looking ethernet + * frame, but, the hard_start_xmit method will insert the tag + * (it has to be able to do this for bridged and other skbs + * that don't come down the protocol stack in an orderly manner. */ rc = dev_hard_header(skb, dev, type, daddr, saddr, len); return rc; } -int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) +static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { - struct net_device_stats *stats = vlan_dev_get_stats(dev); + struct net_device_stats *stats = &dev->stats; struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); /* Handle non-VLAN frames if they are sent to us, for example by DHCP. @@ -463,24 +374,22 @@ int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) */ if (veth->h_vlan_proto != htons(ETH_P_8021Q) || - VLAN_DEV_INFO(dev)->flags & VLAN_FLAG_REORDER_HDR) { + vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { int orig_headroom = skb_headroom(skb); unsigned short veth_TCI; /* This is not a VLAN frame...but we can fix that! */ - VLAN_DEV_INFO(dev)->cnt_encap_on_xmit++; + vlan_dev_info(dev)->cnt_encap_on_xmit++; -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: proto to encap: 0x%hx (hbo)\n", - __FUNCTION__, htons(veth->h_vlan_proto)); -#endif + pr_debug("%s: proto to encap: 0x%hx\n", + __FUNCTION__, htons(veth->h_vlan_proto)); /* Construct the second two bytes. This field looks something * like: * usr_priority: 3 bits (high bits) * CFI 1 bit * VLAN ID 12 bits (low bits) */ - veth_TCI = VLAN_DEV_INFO(dev)->vlan_id; + veth_TCI = vlan_dev_info(dev)->vlan_id; veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); skb = __vlan_put_tag(skb, veth_TCI); @@ -489,32 +398,33 @@ int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) return 0; } - if (orig_headroom < VLAN_HLEN) { - VLAN_DEV_INFO(dev)->cnt_inc_headroom_on_tx++; - } + if (orig_headroom < VLAN_HLEN) + vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; } -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: about to send skb: %p to dev: %s\n", + pr_debug("%s: about to send skb: %p to dev: %s\n", __FUNCTION__, skb, skb->dev->name); - printk(VLAN_DBG " %2hx.%2hx.%2hx.%2xh.%2hx.%2hx %2hx.%2hx.%2hx.%2hx.%2hx.%2hx %4hx %4hx %4hx\n", - veth->h_dest[0], veth->h_dest[1], veth->h_dest[2], veth->h_dest[3], veth->h_dest[4], veth->h_dest[5], - veth->h_source[0], veth->h_source[1], veth->h_source[2], veth->h_source[3], veth->h_source[4], veth->h_source[5], - veth->h_vlan_proto, veth->h_vlan_TCI, veth->h_vlan_encapsulated_proto); -#endif + pr_debug(" " MAC_FMT " " MAC_FMT " %4hx %4hx %4hx\n", + veth->h_dest[0], veth->h_dest[1], veth->h_dest[2], + veth->h_dest[3], veth->h_dest[4], veth->h_dest[5], + veth->h_source[0], veth->h_source[1], veth->h_source[2], + veth->h_source[3], veth->h_source[4], veth->h_source[5], + veth->h_vlan_proto, veth->h_vlan_TCI, + veth->h_vlan_encapsulated_proto); stats->tx_packets++; /* for statics only */ stats->tx_bytes += skb->len; - skb->dev = VLAN_DEV_INFO(dev)->real_dev; + skb->dev = vlan_dev_info(dev)->real_dev; dev_queue_xmit(skb); return 0; } -int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) +static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, + struct net_device *dev) { - struct net_device_stats *stats = vlan_dev_get_stats(dev); + struct net_device_stats *stats = &dev->stats; unsigned short veth_TCI; /* Construct the second two bytes. This field looks something @@ -523,25 +433,25 @@ int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, struct net_device *dev * CFI 1 bit * VLAN ID 12 bits (low bits) */ - veth_TCI = VLAN_DEV_INFO(dev)->vlan_id; + veth_TCI = vlan_dev_info(dev)->vlan_id; veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); skb = __vlan_hwaccel_put_tag(skb, veth_TCI); stats->tx_packets++; stats->tx_bytes += skb->len; - skb->dev = VLAN_DEV_INFO(dev)->real_dev; + skb->dev = vlan_dev_info(dev)->real_dev; dev_queue_xmit(skb); return 0; } -int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) +static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) { /* TODO: gotta make sure the underlying layer can handle it, * maybe an IFF_VLAN_CAPABLE flag for devices? */ - if (VLAN_DEV_INFO(dev)->real_dev->mtu < new_mtu) + if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) return -ERANGE; dev->mtu = new_mtu; @@ -552,7 +462,7 @@ int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) void vlan_dev_set_ingress_priority(const struct net_device *dev, u32 skb_prio, short vlan_prio) { - struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev); + struct vlan_dev_info *vlan = vlan_dev_info(dev); if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) vlan->nr_ingress_mappings--; @@ -565,7 +475,7 @@ void vlan_dev_set_ingress_priority(const struct net_device *dev, int vlan_dev_set_egress_priority(const struct net_device *dev, u32 skb_prio, short vlan_prio) { - struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev); + struct vlan_dev_info *vlan = vlan_dev_info(dev); struct vlan_priority_tci_mapping *mp = NULL; struct vlan_priority_tci_mapping *np; u32 vlan_qos = (vlan_prio << 13) & 0xE000; @@ -605,30 +515,28 @@ int vlan_dev_set_vlan_flag(const struct net_device *dev, { /* verify flag is supported */ if (flag == VLAN_FLAG_REORDER_HDR) { - if (flag_val) { - VLAN_DEV_INFO(dev)->flags |= VLAN_FLAG_REORDER_HDR; - } else { - VLAN_DEV_INFO(dev)->flags &= ~VLAN_FLAG_REORDER_HDR; - } + if (flag_val) + vlan_dev_info(dev)->flags |= VLAN_FLAG_REORDER_HDR; + else + vlan_dev_info(dev)->flags &= ~VLAN_FLAG_REORDER_HDR; return 0; } - printk(KERN_ERR "%s: flag %i is not valid.\n", __FUNCTION__, flag); return -EINVAL; } void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) { - strncpy(result, VLAN_DEV_INFO(dev)->real_dev->name, 23); + strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); } void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result) { - *result = VLAN_DEV_INFO(dev)->vlan_id; + *result = vlan_dev_info(dev)->vlan_id; } -int vlan_dev_open(struct net_device *dev) +static int vlan_dev_open(struct net_device *dev) { - struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev); + struct vlan_dev_info *vlan = vlan_dev_info(dev); struct net_device *real_dev = vlan->real_dev; int err; @@ -650,9 +558,9 @@ int vlan_dev_open(struct net_device *dev) return 0; } -int vlan_dev_stop(struct net_device *dev) +static int vlan_dev_stop(struct net_device *dev) { - struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev; + struct net_device *real_dev = vlan_dev_info(dev)->real_dev; dev_mc_unsync(real_dev, dev); if (dev->flags & IFF_ALLMULTI) @@ -666,9 +574,9 @@ int vlan_dev_stop(struct net_device *dev) return 0; } -int vlan_set_mac_address(struct net_device *dev, void *p) +static int vlan_dev_set_mac_address(struct net_device *dev, void *p) { - struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev; + struct net_device *real_dev = vlan_dev_info(dev)->real_dev; struct sockaddr *addr = p; int err; @@ -692,16 +600,16 @@ out: return 0; } -int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { - struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev; + struct net_device *real_dev = vlan_dev_info(dev)->real_dev; struct ifreq ifrr; int err = -EOPNOTSUPP; strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); ifrr.ifr_ifru = ifr->ifr_ifru; - switch(cmd) { + switch (cmd) { case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: @@ -716,9 +624,9 @@ int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return err; } -void vlan_change_rx_flags(struct net_device *dev, int change) +static void vlan_dev_change_rx_flags(struct net_device *dev, int change) { - struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev; + struct net_device *real_dev = vlan_dev_info(dev)->real_dev; if (change & IFF_ALLMULTI) dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); @@ -726,8 +634,78 @@ void vlan_change_rx_flags(struct net_device *dev, int change) dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); } -/** Taken from Gleb + Lennert's VLAN code, and modified... */ -void vlan_dev_set_multicast_list(struct net_device *vlan_dev) +static void vlan_dev_set_multicast_list(struct net_device *vlan_dev) +{ + dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); +} + +/* + * vlan network devices have devices nesting below it, and are a special + * "super class" of normal network devices; split their locks off into a + * separate class since they always nest. + */ +static struct lock_class_key vlan_netdev_xmit_lock_key; + +static const struct header_ops vlan_header_ops = { + .create = vlan_dev_hard_header, + .rebuild = vlan_dev_rebuild_header, + .parse = eth_header_parse, +}; + +static int vlan_dev_init(struct net_device *dev) +{ + struct net_device *real_dev = vlan_dev_info(dev)->real_dev; + int subclass = 0; + + /* IFF_BROADCAST|IFF_MULTICAST; ??? */ + dev->flags = real_dev->flags & ~IFF_UP; + dev->iflink = real_dev->ifindex; + dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | + (1<<__LINK_STATE_DORMANT))) | + (1<<__LINK_STATE_PRESENT); + + /* ipv6 shared card related stuff */ + dev->dev_id = real_dev->dev_id; + + if (is_zero_ether_addr(dev->dev_addr)) + memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); + if (is_zero_ether_addr(dev->broadcast)) + memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); + + if (real_dev->features & NETIF_F_HW_VLAN_TX) { + dev->header_ops = real_dev->header_ops; + dev->hard_header_len = real_dev->hard_header_len; + dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit; + } else { + dev->header_ops = &vlan_header_ops; + dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; + dev->hard_start_xmit = vlan_dev_hard_start_xmit; + } + + if (real_dev->priv_flags & IFF_802_1Q_VLAN) + subclass = 1; + + lockdep_set_class_and_subclass(&dev->_xmit_lock, + &vlan_netdev_xmit_lock_key, subclass); + return 0; +} + +void vlan_setup(struct net_device *dev) { - dev_mc_sync(VLAN_DEV_INFO(vlan_dev)->real_dev, vlan_dev); + ether_setup(dev); + + dev->priv_flags |= IFF_802_1Q_VLAN; + dev->tx_queue_len = 0; + + dev->change_mtu = vlan_dev_change_mtu; + dev->init = vlan_dev_init; + dev->open = vlan_dev_open; + dev->stop = vlan_dev_stop; + dev->set_mac_address = vlan_dev_set_mac_address; + dev->set_multicast_list = vlan_dev_set_multicast_list; + dev->change_rx_flags = vlan_dev_change_rx_flags; + dev->do_ioctl = vlan_dev_ioctl; + dev->destructor = free_netdev; + + memset(dev->broadcast, 0, ETH_ALEN); } |