734 lines
20 KiB
C
734 lines
20 KiB
C
/* -*- linux-c -*-
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* INET 802.1Q VLAN
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* Ethernet-type device handling.
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*
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* Authors: Ben Greear <greearb@candelatech.com>
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* Please send support related email to: vlan@scry.wanfear.com
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* VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
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*
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* Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com>
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* - reset skb->pkt_type on incoming packets when MAC was changed
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* - see that changed MAC is saddr for outgoing packets
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* Oct 20, 2001: Ard van Breeman:
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* - Fix MC-list, finally.
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* - Flush MC-list on VLAN destroy.
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/in.h>
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#include <linux/init.h>
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#include <asm/uaccess.h> /* for copy_from_user */
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <net/datalink.h>
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#include <net/p8022.h>
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#include <net/arp.h>
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#include "vlan.h"
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#include "vlanproc.h"
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#include <linux/if_vlan.h>
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#include <net/ip.h>
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/*
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* Rebuild the Ethernet MAC header. This is called after an ARP
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* (or in future other address resolution) has completed on this
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* sk_buff. We now let ARP fill in the other fields.
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*
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* This routine CANNOT use cached dst->neigh!
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* Really, it is used only when dst->neigh is wrong.
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*
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* TODO: This needs a checkup, I'm ignorant here. --BLG
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*/
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int vlan_dev_rebuild_header(struct sk_buff *skb)
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{
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struct net_device *dev = skb->dev;
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struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
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switch (veth->h_vlan_encapsulated_proto) {
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#ifdef CONFIG_INET
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case __constant_htons(ETH_P_IP):
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/* TODO: Confirm this will work with VLAN headers... */
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return arp_find(veth->h_dest, skb);
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#endif
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default:
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printk(VLAN_DBG
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"%s: unable to resolve type %X addresses.\n",
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dev->name, ntohs(veth->h_vlan_encapsulated_proto));
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memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
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break;
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}
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return 0;
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}
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static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb)
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{
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if (VLAN_DEV_INFO(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) {
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if (skb_shared(skb) || skb_cloned(skb)) {
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struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC);
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kfree_skb(skb);
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skb = nskb;
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}
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if (skb) {
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/* Lifted from Gleb's VLAN code... */
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memmove(skb->data - ETH_HLEN,
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skb->data - VLAN_ETH_HLEN, 12);
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skb->mac_header += VLAN_HLEN;
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}
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}
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return skb;
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}
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/*
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* Determine the packet's protocol ID. The rule here is that we
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* assume 802.3 if the type field is short enough to be a length.
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* This is normal practice and works for any 'now in use' protocol.
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*
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* Also, at this point we assume that we ARE dealing exclusively with
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* VLAN packets, or packets that should be made into VLAN packets based
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* on a default VLAN ID.
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*
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* NOTE: Should be similar to ethernet/eth.c.
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*
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* SANITY NOTE: This method is called when a packet is moving up the stack
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* towards userland. To get here, it would have already passed
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* through the ethernet/eth.c eth_type_trans() method.
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* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
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* stored UNALIGNED in the memory. RISC systems don't like
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* such cases very much...
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* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be aligned,
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* so there doesn't need to be any of the unaligned stuff. It has
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* been commented out now... --Ben
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*
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*/
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int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type* ptype, struct net_device *orig_dev)
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{
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unsigned char *rawp = NULL;
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struct vlan_hdr *vhdr;
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unsigned short vid;
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struct net_device_stats *stats;
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unsigned short vlan_TCI;
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__be16 proto;
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if (dev->nd_net != &init_net) {
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kfree_skb(skb);
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return -1;
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}
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if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
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return -1;
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if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) {
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kfree_skb(skb);
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return -1;
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}
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vhdr = (struct vlan_hdr *)(skb->data);
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/* vlan_TCI = ntohs(get_unaligned(&vhdr->h_vlan_TCI)); */
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vlan_TCI = ntohs(vhdr->h_vlan_TCI);
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vid = (vlan_TCI & VLAN_VID_MASK);
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: skb: %p vlan_id: %hx\n",
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__FUNCTION__, skb, vid);
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#endif
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/* Ok, we will find the correct VLAN device, strip the header,
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* and then go on as usual.
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*/
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/* We have 12 bits of vlan ID.
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*
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* We must not drop allow preempt until we hold a
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* reference to the device (netif_rx does that) or we
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* fail.
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*/
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rcu_read_lock();
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skb->dev = __find_vlan_dev(dev, vid);
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if (!skb->dev) {
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rcu_read_unlock();
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: ERROR: No net_device for VID: %i on dev: %s [%i]\n",
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__FUNCTION__, (unsigned int)(vid), dev->name, dev->ifindex);
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#endif
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kfree_skb(skb);
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return -1;
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}
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skb->dev->last_rx = jiffies;
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/* Bump the rx counters for the VLAN device. */
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stats = &skb->dev->stats;
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stats->rx_packets++;
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stats->rx_bytes += skb->len;
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/* Take off the VLAN header (4 bytes currently) */
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skb_pull_rcsum(skb, VLAN_HLEN);
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/* Ok, lets check to make sure the device (dev) we
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* came in on is what this VLAN is attached to.
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*/
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if (dev != VLAN_DEV_INFO(skb->dev)->real_dev) {
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rcu_read_unlock();
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: dropping skb: %p because came in on wrong device, dev: %s real_dev: %s, skb_dev: %s\n",
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__FUNCTION__, skb, dev->name,
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VLAN_DEV_INFO(skb->dev)->real_dev->name,
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skb->dev->name);
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#endif
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kfree_skb(skb);
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stats->rx_errors++;
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return -1;
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}
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/*
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* Deal with ingress priority mapping.
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*/
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skb->priority = vlan_get_ingress_priority(skb->dev, ntohs(vhdr->h_vlan_TCI));
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: priority: %lu for TCI: %hu (hbo)\n",
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__FUNCTION__, (unsigned long)(skb->priority),
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ntohs(vhdr->h_vlan_TCI));
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#endif
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/* The ethernet driver already did the pkt_type calculations
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* for us...
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*/
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switch (skb->pkt_type) {
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case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
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// stats->broadcast ++; // no such counter :-(
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break;
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case PACKET_MULTICAST:
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stats->multicast++;
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break;
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case PACKET_OTHERHOST:
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/* Our lower layer thinks this is not local, let's make sure.
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* This allows the VLAN to have a different MAC than the underlying
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* device, and still route correctly.
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*/
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if (!compare_ether_addr(eth_hdr(skb)->h_dest, skb->dev->dev_addr)) {
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/* It is for our (changed) MAC-address! */
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skb->pkt_type = PACKET_HOST;
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}
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break;
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default:
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break;
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}
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/* Was a VLAN packet, grab the encapsulated protocol, which the layer
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* three protocols care about.
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*/
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/* proto = get_unaligned(&vhdr->h_vlan_encapsulated_proto); */
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proto = vhdr->h_vlan_encapsulated_proto;
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skb->protocol = proto;
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if (ntohs(proto) >= 1536) {
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/* place it back on the queue to be handled by
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* true layer 3 protocols.
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*/
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/* See if we are configured to re-write the VLAN header
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* to make it look like ethernet...
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*/
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skb = vlan_check_reorder_header(skb);
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/* Can be null if skb-clone fails when re-ordering */
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if (skb) {
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netif_rx(skb);
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} else {
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/* TODO: Add a more specific counter here. */
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stats->rx_errors++;
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}
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rcu_read_unlock();
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return 0;
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}
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rawp = skb->data;
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/*
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* This is a magic hack to spot IPX packets. Older Novell breaks
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* the protocol design and runs IPX over 802.3 without an 802.2 LLC
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* layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
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* won't work for fault tolerant netware but does for the rest.
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*/
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if (*(unsigned short *)rawp == 0xFFFF) {
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skb->protocol = htons(ETH_P_802_3);
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/* place it back on the queue to be handled by true layer 3 protocols.
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*/
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/* See if we are configured to re-write the VLAN header
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* to make it look like ethernet...
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*/
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skb = vlan_check_reorder_header(skb);
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/* Can be null if skb-clone fails when re-ordering */
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if (skb) {
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netif_rx(skb);
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} else {
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/* TODO: Add a more specific counter here. */
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stats->rx_errors++;
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}
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rcu_read_unlock();
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return 0;
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}
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/*
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* Real 802.2 LLC
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*/
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skb->protocol = htons(ETH_P_802_2);
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/* place it back on the queue to be handled by upper layer protocols.
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*/
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/* See if we are configured to re-write the VLAN header
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* to make it look like ethernet...
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*/
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skb = vlan_check_reorder_header(skb);
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/* Can be null if skb-clone fails when re-ordering */
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if (skb) {
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netif_rx(skb);
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} else {
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/* TODO: Add a more specific counter here. */
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stats->rx_errors++;
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}
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rcu_read_unlock();
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return 0;
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}
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static inline unsigned short vlan_dev_get_egress_qos_mask(struct net_device* dev,
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struct sk_buff* skb)
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{
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struct vlan_priority_tci_mapping *mp =
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VLAN_DEV_INFO(dev)->egress_priority_map[(skb->priority & 0xF)];
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while (mp) {
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if (mp->priority == skb->priority) {
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return mp->vlan_qos; /* This should already be shifted to mask
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* correctly with the VLAN's TCI
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*/
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}
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mp = mp->next;
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}
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return 0;
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}
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/*
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* Create the VLAN header for an arbitrary protocol layer
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*
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* saddr=NULL means use device source address
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* daddr=NULL means leave destination address (eg unresolved arp)
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*
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* This is called when the SKB is moving down the stack towards the
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* physical devices.
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*/
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int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
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unsigned short type,
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const void *daddr, const void *saddr, unsigned len)
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{
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struct vlan_hdr *vhdr;
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unsigned short veth_TCI = 0;
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int rc = 0;
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int build_vlan_header = 0;
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struct net_device *vdev = dev; /* save this for the bottom of the method */
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: skb: %p type: %hx len: %x vlan_id: %hx, daddr: %p\n",
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__FUNCTION__, skb, type, len, VLAN_DEV_INFO(dev)->vlan_id, daddr);
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#endif
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/* build vlan header only if re_order_header flag is NOT set. This
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* fixes some programs that get confused when they see a VLAN device
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* sending a frame that is VLAN encoded (the consensus is that the VLAN
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* device should look completely like an Ethernet device when the
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* REORDER_HEADER flag is set) The drawback to this is some extra
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* header shuffling in the hard_start_xmit. Users can turn off this
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* REORDER behaviour with the vconfig tool.
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*/
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if (!(VLAN_DEV_INFO(dev)->flags & VLAN_FLAG_REORDER_HDR))
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build_vlan_header = 1;
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if (build_vlan_header) {
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vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
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/* build the four bytes that make this a VLAN header. */
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/* Now, construct the second two bytes. This field looks something
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* like:
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* usr_priority: 3 bits (high bits)
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* CFI 1 bit
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* VLAN ID 12 bits (low bits)
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*
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*/
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veth_TCI = VLAN_DEV_INFO(dev)->vlan_id;
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veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
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vhdr->h_vlan_TCI = htons(veth_TCI);
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/*
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* Set the protocol type.
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* For a packet of type ETH_P_802_3 we put the length in here instead.
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* It is up to the 802.2 layer to carry protocol information.
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*/
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if (type != ETH_P_802_3) {
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vhdr->h_vlan_encapsulated_proto = htons(type);
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} else {
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vhdr->h_vlan_encapsulated_proto = htons(len);
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}
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skb->protocol = htons(ETH_P_8021Q);
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skb_reset_network_header(skb);
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}
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/* Before delegating work to the lower layer, enter our MAC-address */
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if (saddr == NULL)
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saddr = dev->dev_addr;
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dev = VLAN_DEV_INFO(dev)->real_dev;
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/* MPLS can send us skbuffs w/out enough space. This check will grow the
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* skb if it doesn't have enough headroom. Not a beautiful solution, so
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* I'll tick a counter so that users can know it's happening... If they
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* care...
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*/
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/* NOTE: This may still break if the underlying device is not the final
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* device (and thus there are more headers to add...) It should work for
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* good-ole-ethernet though.
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*/
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if (skb_headroom(skb) < dev->hard_header_len) {
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struct sk_buff *sk_tmp = skb;
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skb = skb_realloc_headroom(sk_tmp, dev->hard_header_len);
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kfree_skb(sk_tmp);
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if (skb == NULL) {
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struct net_device_stats *stats = &vdev->stats;
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stats->tx_dropped++;
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return -ENOMEM;
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}
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VLAN_DEV_INFO(vdev)->cnt_inc_headroom_on_tx++;
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: %s: had to grow skb.\n", __FUNCTION__, vdev->name);
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#endif
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}
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if (build_vlan_header) {
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/* Now make the underlying real hard header */
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rc = dev_hard_header(skb, dev, ETH_P_8021Q, daddr, saddr,
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len + VLAN_HLEN);
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if (rc > 0)
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rc += VLAN_HLEN;
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else if (rc < 0)
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rc -= VLAN_HLEN;
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} else
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/* If here, then we'll just make a normal looking ethernet frame,
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* but, the hard_start_xmit method will insert the tag (it has to
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* be able to do this for bridged and other skbs that don't come
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* down the protocol stack in an orderly manner.
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*/
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rc = dev_hard_header(skb, dev, type, daddr, saddr, len);
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return rc;
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}
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int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct net_device_stats *stats = &dev->stats;
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struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
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/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
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*
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* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
|
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* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
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*/
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if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
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VLAN_DEV_INFO(dev)->flags & VLAN_FLAG_REORDER_HDR) {
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int orig_headroom = skb_headroom(skb);
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unsigned short veth_TCI;
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/* This is not a VLAN frame...but we can fix that! */
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VLAN_DEV_INFO(dev)->cnt_encap_on_xmit++;
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|
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#ifdef VLAN_DEBUG
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printk(VLAN_DBG "%s: proto to encap: 0x%hx (hbo)\n",
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__FUNCTION__, htons(veth->h_vlan_proto));
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#endif
|
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/* Construct the second two bytes. This field looks something
|
|
* like:
|
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* usr_priority: 3 bits (high bits)
|
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* CFI 1 bit
|
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* VLAN ID 12 bits (low bits)
|
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*/
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veth_TCI = VLAN_DEV_INFO(dev)->vlan_id;
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veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
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skb = __vlan_put_tag(skb, veth_TCI);
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if (!skb) {
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stats->tx_dropped++;
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return 0;
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}
|
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|
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if (orig_headroom < VLAN_HLEN) {
|
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VLAN_DEV_INFO(dev)->cnt_inc_headroom_on_tx++;
|
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}
|
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}
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|
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#ifdef VLAN_DEBUG
|
|
printk(VLAN_DBG "%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
|
|
|
|
stats->tx_packets++; /* for statics only */
|
|
stats->tx_bytes += skb->len;
|
|
|
|
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)
|
|
{
|
|
struct net_device_stats *stats = &dev->stats;
|
|
unsigned short veth_TCI;
|
|
|
|
/* 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_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;
|
|
dev_queue_xmit(skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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)
|
|
return -ERANGE;
|
|
|
|
dev->mtu = new_mtu;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
|
|
if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
|
|
vlan->nr_ingress_mappings--;
|
|
else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
|
|
vlan->nr_ingress_mappings++;
|
|
|
|
vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
|
|
}
|
|
|
|
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_priority_tci_mapping *mp = NULL;
|
|
struct vlan_priority_tci_mapping *np;
|
|
u32 vlan_qos = (vlan_prio << 13) & 0xE000;
|
|
|
|
/* See if a priority mapping exists.. */
|
|
mp = vlan->egress_priority_map[skb_prio & 0xF];
|
|
while (mp) {
|
|
if (mp->priority == skb_prio) {
|
|
if (mp->vlan_qos && !vlan_qos)
|
|
vlan->nr_egress_mappings--;
|
|
else if (!mp->vlan_qos && vlan_qos)
|
|
vlan->nr_egress_mappings++;
|
|
mp->vlan_qos = vlan_qos;
|
|
return 0;
|
|
}
|
|
mp = mp->next;
|
|
}
|
|
|
|
/* Create a new mapping then. */
|
|
mp = vlan->egress_priority_map[skb_prio & 0xF];
|
|
np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL);
|
|
if (!np)
|
|
return -ENOBUFS;
|
|
|
|
np->next = mp;
|
|
np->priority = skb_prio;
|
|
np->vlan_qos = vlan_qos;
|
|
vlan->egress_priority_map[skb_prio & 0xF] = np;
|
|
if (vlan_qos)
|
|
vlan->nr_egress_mappings++;
|
|
return 0;
|
|
}
|
|
|
|
/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
|
|
int vlan_dev_set_vlan_flag(const struct net_device *dev,
|
|
u32 flag, short flag_val)
|
|
{
|
|
/* 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;
|
|
}
|
|
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);
|
|
}
|
|
|
|
void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result)
|
|
{
|
|
*result = VLAN_DEV_INFO(dev)->vlan_id;
|
|
}
|
|
|
|
int vlan_dev_open(struct net_device *dev)
|
|
{
|
|
struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev);
|
|
struct net_device *real_dev = vlan->real_dev;
|
|
int err;
|
|
|
|
if (!(real_dev->flags & IFF_UP))
|
|
return -ENETDOWN;
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
|
|
err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
|
|
|
|
if (dev->flags & IFF_ALLMULTI)
|
|
dev_set_allmulti(real_dev, 1);
|
|
if (dev->flags & IFF_PROMISC)
|
|
dev_set_promiscuity(real_dev, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int vlan_dev_stop(struct net_device *dev)
|
|
{
|
|
struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
|
|
|
|
dev_mc_unsync(real_dev, dev);
|
|
if (dev->flags & IFF_ALLMULTI)
|
|
dev_set_allmulti(real_dev, -1);
|
|
if (dev->flags & IFF_PROMISC)
|
|
dev_set_promiscuity(real_dev, -1);
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int vlan_set_mac_address(struct net_device *dev, void *p)
|
|
{
|
|
struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
|
|
struct sockaddr *addr = p;
|
|
int err;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
if (!(dev->flags & IFF_UP))
|
|
goto out;
|
|
|
|
if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) {
|
|
err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN);
|
|
|
|
out:
|
|
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
|
|
return 0;
|
|
}
|
|
|
|
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 ifreq ifrr;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
|
|
ifrr.ifr_ifru = ifr->ifr_ifru;
|
|
|
|
switch(cmd) {
|
|
case SIOCGMIIPHY:
|
|
case SIOCGMIIREG:
|
|
case SIOCSMIIREG:
|
|
if (real_dev->do_ioctl && netif_device_present(real_dev))
|
|
err = real_dev->do_ioctl(real_dev, &ifrr, cmd);
|
|
break;
|
|
}
|
|
|
|
if (!err)
|
|
ifr->ifr_ifru = ifrr.ifr_ifru;
|
|
|
|
return err;
|
|
}
|
|
|
|
void vlan_change_rx_flags(struct net_device *dev, int change)
|
|
{
|
|
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);
|
|
if (change & IFF_PROMISC)
|
|
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)
|
|
{
|
|
dev_mc_sync(VLAN_DEV_INFO(vlan_dev)->real_dev, vlan_dev);
|
|
}
|