Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* -*- linux-c -*- |
| 2 | * INET 802.1Q VLAN |
| 3 | * Ethernet-type device handling. |
| 4 | * |
| 5 | * Authors: Ben Greear <greearb@candelatech.com> |
Patrick McHardy | ad71208 | 2008-01-21 00:27:00 -0800 | [diff] [blame] | 6 | * Please send support related email to: netdev@vger.kernel.org |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 8 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> |
| 10 | * - reset skb->pkt_type on incoming packets when MAC was changed |
| 11 | * - see that changed MAC is saddr for outgoing packets |
| 12 | * Oct 20, 2001: Ard van Breeman: |
| 13 | * - Fix MC-list, finally. |
| 14 | * - Flush MC-list on VLAN destroy. |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * This program is free software; you can redistribute it and/or |
| 18 | * modify it under the terms of the GNU General Public License |
| 19 | * as published by the Free Software Foundation; either version |
| 20 | * 2 of the License, or (at your option) any later version. |
| 21 | */ |
| 22 | |
Joe Perches | afab2d2 | 2011-05-26 10:58:31 +0000 | [diff] [blame] | 23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 26 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/skbuff.h> |
| 28 | #include <linux/netdevice.h> |
| 29 | #include <linux/etherdevice.h> |
Patrick McHardy | 75b8846 | 2008-07-08 03:22:42 -0700 | [diff] [blame] | 30 | #include <linux/ethtool.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <net/arp.h> |
| 32 | |
| 33 | #include "vlan.h" |
| 34 | #include "vlanproc.h" |
| 35 | #include <linux/if_vlan.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | /* |
| 38 | * Rebuild the Ethernet MAC header. This is called after an ARP |
| 39 | * (or in future other address resolution) has completed on this |
| 40 | * sk_buff. We now let ARP fill in the other fields. |
| 41 | * |
| 42 | * This routine CANNOT use cached dst->neigh! |
| 43 | * Really, it is used only when dst->neigh is wrong. |
| 44 | * |
| 45 | * TODO: This needs a checkup, I'm ignorant here. --BLG |
| 46 | */ |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 47 | static int vlan_dev_rebuild_header(struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | { |
| 49 | struct net_device *dev = skb->dev; |
| 50 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
| 51 | |
| 52 | switch (veth->h_vlan_encapsulated_proto) { |
| 53 | #ifdef CONFIG_INET |
Arnaldo Carvalho de Melo | 6067804 | 2008-09-20 22:20:49 -0700 | [diff] [blame] | 54 | case htons(ETH_P_IP): |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* TODO: Confirm this will work with VLAN headers... */ |
| 57 | return arp_find(veth->h_dest, skb); |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 58 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | default: |
Joe Perches | afab2d2 | 2011-05-26 10:58:31 +0000 | [diff] [blame] | 60 | pr_debug("%s: unable to resolve type %X addresses\n", |
Patrick McHardy | 40f98e1 | 2008-01-21 00:24:30 -0800 | [diff] [blame] | 61 | dev->name, ntohs(veth->h_vlan_encapsulated_proto)); |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); |
| 64 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 65 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 70 | static inline u16 |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 71 | vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | { |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 73 | struct vlan_priority_tci_mapping *mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 75 | mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | while (mp) { |
| 77 | if (mp->priority == skb->priority) { |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 78 | return mp->vlan_qos; /* This should already be shifted |
| 79 | * to mask correctly with the |
| 80 | * VLAN's TCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | } |
| 82 | mp = mp->next; |
| 83 | } |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | /* |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 88 | * Create the VLAN header for an arbitrary protocol layer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | * |
| 90 | * saddr=NULL means use device source address |
| 91 | * daddr=NULL means leave destination address (eg unresolved arp) |
| 92 | * |
| 93 | * This is called when the SKB is moving down the stack towards the |
| 94 | * physical devices. |
| 95 | */ |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 96 | static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 97 | unsigned short type, |
| 98 | const void *daddr, const void *saddr, |
| 99 | unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | { |
| 101 | struct vlan_hdr *vhdr; |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 102 | unsigned int vhdrlen = 0; |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 103 | u16 vlan_tci = 0; |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 104 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 106 | if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); |
| 108 | |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 109 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
| 110 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 111 | vhdr->h_vlan_TCI = htons(vlan_tci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | /* |
Octavian Purdila | bf9ae53 | 2009-12-26 11:50:59 +0000 | [diff] [blame] | 114 | * Set the protocol type. For a packet of type ETH_P_802_3/2 we |
| 115 | * put the length in here instead. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | */ |
Octavian Purdila | bf9ae53 | 2009-12-26 11:50:59 +0000 | [diff] [blame] | 117 | if (type != ETH_P_802_3 && type != ETH_P_802_2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | vhdr->h_vlan_encapsulated_proto = htons(type); |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 119 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | vhdr->h_vlan_encapsulated_proto = htons(len); |
Jerome Borsboom | 279e172 | 2007-04-13 16:12:47 -0700 | [diff] [blame] | 121 | |
| 122 | skb->protocol = htons(ETH_P_8021Q); |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 123 | type = ETH_P_8021Q; |
| 124 | vhdrlen = VLAN_HLEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | /* Before delegating work to the lower layer, enter our MAC-address */ |
| 128 | if (saddr == NULL) |
| 129 | saddr = dev->dev_addr; |
| 130 | |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 131 | /* Now make the underlying real hard header */ |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 132 | dev = vlan_dev_info(dev)->real_dev; |
Patrick McHardy | 1349fe9 | 2008-07-14 22:51:19 -0700 | [diff] [blame] | 133 | rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen); |
| 134 | if (rc > 0) |
| 135 | rc += vhdrlen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | return rc; |
| 137 | } |
| 138 | |
Stephen Hemminger | 6fef4c0 | 2009-08-31 19:50:41 +0000 | [diff] [blame] | 139 | static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, |
| 140 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); |
Eric Dumazet | 1a123a3 | 2009-09-03 00:39:16 +0000 | [diff] [blame] | 143 | unsigned int len; |
| 144 | int ret; |
David S. Miller | 55b01e8 | 2008-02-23 20:09:11 -0800 | [diff] [blame] | 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | /* Handle non-VLAN frames if they are sent to us, for example by DHCP. |
| 147 | * |
| 148 | * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING |
| 149 | * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... |
| 150 | */ |
Joonwoo Park | 6ab3b48 | 2007-11-29 22:16:41 +1100 | [diff] [blame] | 151 | if (veth->h_vlan_proto != htons(ETH_P_8021Q) || |
Patrick McHardy | d80aa31 | 2008-07-14 22:51:39 -0700 | [diff] [blame] | 152 | vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 153 | u16 vlan_tci; |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 154 | vlan_tci = vlan_dev_info(dev)->vlan_id; |
| 155 | vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); |
John Fastabend | 636e19a | 2010-10-30 14:22:42 +0000 | [diff] [blame] | 156 | skb = __vlan_hwaccel_put_tag(skb, vlan_tci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
Arnd Bergmann | 8a83a00 | 2010-01-30 12:23:03 +0000 | [diff] [blame] | 159 | skb_set_dev(skb, vlan_dev_info(dev)->real_dev); |
Eric Dumazet | 1a123a3 | 2009-09-03 00:39:16 +0000 | [diff] [blame] | 160 | len = skb->len; |
| 161 | ret = dev_queue_xmit(skb); |
| 162 | |
Eric Dumazet | 2d6c9ff | 2010-05-10 04:51:02 +0000 | [diff] [blame] | 163 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 164 | struct vlan_pcpu_stats *stats; |
| 165 | |
| 166 | stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats); |
| 167 | u64_stats_update_begin(&stats->syncp); |
| 168 | stats->tx_packets++; |
| 169 | stats->tx_bytes += len; |
Wei Yongjun | 307f73d | 2011-05-31 22:53:19 +0000 | [diff] [blame] | 170 | u64_stats_update_end(&stats->syncp); |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 171 | } else { |
| 172 | this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped); |
| 173 | } |
Eric Dumazet | 1a123a3 | 2009-09-03 00:39:16 +0000 | [diff] [blame] | 174 | |
Patrick McHardy | cbbef5e | 2009-11-10 06:14:24 +0000 | [diff] [blame] | 175 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 178 | static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | { |
| 180 | /* TODO: gotta make sure the underlying layer can handle it, |
| 181 | * maybe an IFF_VLAN_CAPABLE flag for devices? |
| 182 | */ |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 183 | if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | return -ERANGE; |
| 185 | |
| 186 | dev->mtu = new_mtu; |
| 187 | |
| 188 | return 0; |
| 189 | } |
| 190 | |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 191 | void vlan_dev_set_ingress_priority(const struct net_device *dev, |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 192 | u32 skb_prio, u16 vlan_prio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 194 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
Patrick McHardy | b020cb4 | 2007-06-13 12:07:22 -0700 | [diff] [blame] | 195 | |
| 196 | if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) |
| 197 | vlan->nr_ingress_mappings--; |
| 198 | else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) |
| 199 | vlan->nr_ingress_mappings++; |
| 200 | |
| 201 | vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 204 | int vlan_dev_set_egress_priority(const struct net_device *dev, |
Patrick McHardy | 9bb8582 | 2008-07-08 03:24:44 -0700 | [diff] [blame] | 205 | u32 skb_prio, u16 vlan_prio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 207 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | struct vlan_priority_tci_mapping *mp = NULL; |
| 209 | struct vlan_priority_tci_mapping *np; |
Eric Dumazet | 05423b2 | 2009-10-26 18:40:35 -0700 | [diff] [blame] | 210 | u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK; |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 211 | |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 212 | /* See if a priority mapping exists.. */ |
Patrick McHardy | b020cb4 | 2007-06-13 12:07:22 -0700 | [diff] [blame] | 213 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 214 | while (mp) { |
| 215 | if (mp->priority == skb_prio) { |
Patrick McHardy | b020cb4 | 2007-06-13 12:07:22 -0700 | [diff] [blame] | 216 | if (mp->vlan_qos && !vlan_qos) |
| 217 | vlan->nr_egress_mappings--; |
| 218 | else if (!mp->vlan_qos && vlan_qos) |
| 219 | vlan->nr_egress_mappings++; |
| 220 | mp->vlan_qos = vlan_qos; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 221 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 223 | mp = mp->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 225 | |
| 226 | /* Create a new mapping then. */ |
Patrick McHardy | b020cb4 | 2007-06-13 12:07:22 -0700 | [diff] [blame] | 227 | mp = vlan->egress_priority_map[skb_prio & 0xF]; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 228 | np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); |
| 229 | if (!np) |
| 230 | return -ENOBUFS; |
| 231 | |
| 232 | np->next = mp; |
| 233 | np->priority = skb_prio; |
Patrick McHardy | b020cb4 | 2007-06-13 12:07:22 -0700 | [diff] [blame] | 234 | np->vlan_qos = vlan_qos; |
| 235 | vlan->egress_priority_map[skb_prio & 0xF] = np; |
| 236 | if (vlan_qos) |
| 237 | vlan->nr_egress_mappings++; |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 238 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Patrick McHardy | a4bf3af4 | 2007-06-13 12:07:37 -0700 | [diff] [blame] | 241 | /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ |
Patrick McHardy | b3ce032 | 2008-07-05 21:26:27 -0700 | [diff] [blame] | 242 | int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Patrick McHardy | b3ce032 | 2008-07-05 21:26:27 -0700 | [diff] [blame] | 244 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| 245 | u32 old_flags = vlan->flags; |
| 246 | |
Patrick McHardy | 5e75659 | 2009-11-25 07:54:54 +0000 | [diff] [blame] | 247 | if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP | |
| 248 | VLAN_FLAG_LOOSE_BINDING)) |
Patrick McHardy | b3ce032 | 2008-07-05 21:26:27 -0700 | [diff] [blame] | 249 | return -EINVAL; |
| 250 | |
| 251 | vlan->flags = (old_flags & ~mask) | (flags & mask); |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 252 | |
| 253 | if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) { |
| 254 | if (vlan->flags & VLAN_FLAG_GVRP) |
| 255 | vlan_gvrp_request_join(dev); |
| 256 | else |
| 257 | vlan_gvrp_request_leave(dev); |
| 258 | } |
Patrick McHardy | b3ce032 | 2008-07-05 21:26:27 -0700 | [diff] [blame] | 259 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
| 261 | |
Patrick McHardy | c17d887 | 2007-06-13 12:05:22 -0700 | [diff] [blame] | 262 | void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 264 | strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
| 266 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 267 | static int vlan_dev_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 269 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 270 | struct net_device *real_dev = vlan->real_dev; |
| 271 | int err; |
| 272 | |
Patrick McHardy | 5e75659 | 2009-11-25 07:54:54 +0000 | [diff] [blame] | 273 | if (!(real_dev->flags & IFF_UP) && |
| 274 | !(vlan->flags & VLAN_FLAG_LOOSE_BINDING)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | return -ENETDOWN; |
| 276 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 277 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 278 | err = dev_uc_add(real_dev, dev->dev_addr); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 279 | if (err < 0) |
Wang Chen | 8914650 | 2008-07-14 20:59:03 -0700 | [diff] [blame] | 280 | goto out; |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 281 | } |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 282 | |
Wang Chen | 8914650 | 2008-07-14 20:59:03 -0700 | [diff] [blame] | 283 | if (dev->flags & IFF_ALLMULTI) { |
| 284 | err = dev_set_allmulti(real_dev, 1); |
| 285 | if (err < 0) |
| 286 | goto del_unicast; |
| 287 | } |
| 288 | if (dev->flags & IFF_PROMISC) { |
| 289 | err = dev_set_promiscuity(real_dev, 1); |
| 290 | if (err < 0) |
| 291 | goto clear_allmulti; |
| 292 | } |
| 293 | |
| 294 | memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); |
Patrick McHardy | 6c78dcb | 2007-07-14 18:52:56 -0700 | [diff] [blame] | 295 | |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 296 | if (vlan->flags & VLAN_FLAG_GVRP) |
| 297 | vlan_gvrp_request_join(dev); |
| 298 | |
Phil Oester | 0ac820e | 2010-08-17 18:45:08 +0000 | [diff] [blame] | 299 | if (netif_carrier_ok(real_dev)) |
| 300 | netif_carrier_on(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | return 0; |
Wang Chen | 8914650 | 2008-07-14 20:59:03 -0700 | [diff] [blame] | 302 | |
| 303 | clear_allmulti: |
| 304 | if (dev->flags & IFF_ALLMULTI) |
| 305 | dev_set_allmulti(real_dev, -1); |
| 306 | del_unicast: |
| 307 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 308 | dev_uc_del(real_dev, dev->dev_addr); |
Wang Chen | 8914650 | 2008-07-14 20:59:03 -0700 | [diff] [blame] | 309 | out: |
Jay Vosburgh | adc667e | 2009-04-25 18:03:35 -0700 | [diff] [blame] | 310 | netif_carrier_off(dev); |
Wang Chen | 8914650 | 2008-07-14 20:59:03 -0700 | [diff] [blame] | 311 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 314 | static int vlan_dev_stop(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
Patrick McHardy | 70c03b4 | 2008-07-05 21:26:57 -0700 | [diff] [blame] | 316 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| 317 | struct net_device *real_dev = vlan->real_dev; |
| 318 | |
Patrick McHardy | 56addd6 | 2007-07-14 18:53:28 -0700 | [diff] [blame] | 319 | dev_mc_unsync(real_dev, dev); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 320 | dev_uc_unsync(real_dev, dev); |
Patrick McHardy | 6c78dcb | 2007-07-14 18:52:56 -0700 | [diff] [blame] | 321 | if (dev->flags & IFF_ALLMULTI) |
| 322 | dev_set_allmulti(real_dev, -1); |
| 323 | if (dev->flags & IFF_PROMISC) |
| 324 | dev_set_promiscuity(real_dev, -1); |
| 325 | |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 326 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 327 | dev_uc_del(real_dev, dev->dev_addr); |
Patrick McHardy | 8c979c2 | 2007-07-11 19:45:24 -0700 | [diff] [blame] | 328 | |
Jay Vosburgh | adc667e | 2009-04-25 18:03:35 -0700 | [diff] [blame] | 329 | netif_carrier_off(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | return 0; |
| 331 | } |
| 332 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 333 | static int vlan_dev_set_mac_address(struct net_device *dev, void *p) |
Patrick McHardy | 39aaac1 | 2007-11-10 21:52:35 -0800 | [diff] [blame] | 334 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 335 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
Patrick McHardy | 39aaac1 | 2007-11-10 21:52:35 -0800 | [diff] [blame] | 336 | struct sockaddr *addr = p; |
| 337 | int err; |
| 338 | |
| 339 | if (!is_valid_ether_addr(addr->sa_data)) |
| 340 | return -EADDRNOTAVAIL; |
| 341 | |
| 342 | if (!(dev->flags & IFF_UP)) |
| 343 | goto out; |
| 344 | |
| 345 | if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 346 | err = dev_uc_add(real_dev, addr->sa_data); |
Patrick McHardy | 39aaac1 | 2007-11-10 21:52:35 -0800 | [diff] [blame] | 347 | if (err < 0) |
| 348 | return err; |
| 349 | } |
| 350 | |
| 351 | if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 352 | dev_uc_del(real_dev, dev->dev_addr); |
Patrick McHardy | 39aaac1 | 2007-11-10 21:52:35 -0800 | [diff] [blame] | 353 | |
| 354 | out: |
| 355 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
| 356 | return 0; |
| 357 | } |
| 358 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 359 | static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 361 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
Stephen Hemminger | 656299f | 2008-11-19 21:53:47 -0800 | [diff] [blame] | 362 | const struct net_device_ops *ops = real_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | struct ifreq ifrr; |
| 364 | int err = -EOPNOTSUPP; |
| 365 | |
| 366 | strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); |
| 367 | ifrr.ifr_ifru = ifr->ifr_ifru; |
| 368 | |
Patrick McHardy | 2029cc2 | 2008-01-21 00:26:41 -0800 | [diff] [blame] | 369 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | case SIOCGMIIPHY: |
| 371 | case SIOCGMIIREG: |
| 372 | case SIOCSMIIREG: |
Stephen Hemminger | 656299f | 2008-11-19 21:53:47 -0800 | [diff] [blame] | 373 | if (netif_device_present(real_dev) && ops->ndo_do_ioctl) |
| 374 | err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
| 377 | |
YOSHIFUJI Hideaki | 122952f | 2007-02-09 23:24:25 +0900 | [diff] [blame] | 378 | if (!err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | ifr->ifr_ifru = ifrr.ifr_ifru; |
| 380 | |
| 381 | return err; |
| 382 | } |
| 383 | |
Frank Blaschka | cc883d1 | 2009-01-08 10:50:20 -0800 | [diff] [blame] | 384 | static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa) |
| 385 | { |
| 386 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 387 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 388 | int err = 0; |
| 389 | |
| 390 | if (netif_device_present(real_dev) && ops->ndo_neigh_setup) |
David S. Miller | 9d40bbd | 2009-03-04 23:46:25 -0800 | [diff] [blame] | 391 | err = ops->ndo_neigh_setup(real_dev, pa); |
Frank Blaschka | cc883d1 | 2009-01-08 10:50:20 -0800 | [diff] [blame] | 392 | |
| 393 | return err; |
| 394 | } |
| 395 | |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 396 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 397 | static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid, |
| 398 | struct scatterlist *sgl, unsigned int sgc) |
| 399 | { |
| 400 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 401 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 402 | int rc = 0; |
| 403 | |
| 404 | if (ops->ndo_fcoe_ddp_setup) |
| 405 | rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc); |
| 406 | |
| 407 | return rc; |
| 408 | } |
| 409 | |
| 410 | static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid) |
| 411 | { |
| 412 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 413 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 414 | int len = 0; |
| 415 | |
| 416 | if (ops->ndo_fcoe_ddp_done) |
| 417 | len = ops->ndo_fcoe_ddp_done(real_dev, xid); |
| 418 | |
| 419 | return len; |
| 420 | } |
Yi Zou | 0af46d9 | 2009-08-31 12:31:55 +0000 | [diff] [blame] | 421 | |
| 422 | static int vlan_dev_fcoe_enable(struct net_device *dev) |
| 423 | { |
| 424 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 425 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 426 | int rc = -EINVAL; |
| 427 | |
| 428 | if (ops->ndo_fcoe_enable) |
| 429 | rc = ops->ndo_fcoe_enable(real_dev); |
| 430 | return rc; |
| 431 | } |
| 432 | |
| 433 | static int vlan_dev_fcoe_disable(struct net_device *dev) |
| 434 | { |
| 435 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 436 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 437 | int rc = -EINVAL; |
| 438 | |
| 439 | if (ops->ndo_fcoe_disable) |
| 440 | rc = ops->ndo_fcoe_disable(real_dev); |
| 441 | return rc; |
| 442 | } |
Yi Zou | d653479 | 2009-10-28 18:25:16 +0000 | [diff] [blame] | 443 | |
| 444 | static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type) |
| 445 | { |
| 446 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 447 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 448 | int rc = -EINVAL; |
| 449 | |
| 450 | if (ops->ndo_fcoe_get_wwn) |
| 451 | rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type); |
| 452 | return rc; |
| 453 | } |
Yi Zou | 4ea09c9 | 2011-02-01 07:22:11 +0000 | [diff] [blame] | 454 | |
| 455 | static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid, |
| 456 | struct scatterlist *sgl, unsigned int sgc) |
| 457 | { |
| 458 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
| 459 | const struct net_device_ops *ops = real_dev->netdev_ops; |
| 460 | int rc = 0; |
| 461 | |
| 462 | if (ops->ndo_fcoe_ddp_target) |
| 463 | rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc); |
| 464 | |
| 465 | return rc; |
| 466 | } |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 467 | #endif |
| 468 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 469 | static void vlan_dev_change_rx_flags(struct net_device *dev, int change) |
Patrick McHardy | 6c78dcb | 2007-07-14 18:52:56 -0700 | [diff] [blame] | 470 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 471 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
Patrick McHardy | 6c78dcb | 2007-07-14 18:52:56 -0700 | [diff] [blame] | 472 | |
Matthijs Kooijman | deede2f | 2011-10-31 04:53:13 +0000 | [diff] [blame] | 473 | if (dev->flags & IFF_UP) { |
| 474 | if (change & IFF_ALLMULTI) |
| 475 | dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); |
| 476 | if (change & IFF_PROMISC) |
| 477 | dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); |
| 478 | } |
Patrick McHardy | 6c78dcb | 2007-07-14 18:52:56 -0700 | [diff] [blame] | 479 | } |
| 480 | |
Chris Leech | e83a2ea | 2008-01-31 16:53:23 -0800 | [diff] [blame] | 481 | static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 483 | dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 484 | dev_uc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | } |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 486 | |
| 487 | /* |
| 488 | * vlan network devices have devices nesting below it, and are a special |
| 489 | * "super class" of normal network devices; split their locks off into a |
| 490 | * separate class since they always nest. |
| 491 | */ |
| 492 | static struct lock_class_key vlan_netdev_xmit_lock_key; |
David S. Miller | cf508b1 | 2008-07-22 14:16:42 -0700 | [diff] [blame] | 493 | static struct lock_class_key vlan_netdev_addr_lock_key; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 494 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 495 | static void vlan_dev_set_lockdep_one(struct net_device *dev, |
| 496 | struct netdev_queue *txq, |
| 497 | void *_subclass) |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 498 | { |
| 499 | lockdep_set_class_and_subclass(&txq->_xmit_lock, |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 500 | &vlan_netdev_xmit_lock_key, |
| 501 | *(int *)_subclass); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass) |
| 505 | { |
David S. Miller | cf508b1 | 2008-07-22 14:16:42 -0700 | [diff] [blame] | 506 | lockdep_set_class_and_subclass(&dev->addr_list_lock, |
| 507 | &vlan_netdev_addr_lock_key, |
| 508 | subclass); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 509 | netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 510 | } |
| 511 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 512 | static const struct header_ops vlan_header_ops = { |
| 513 | .create = vlan_dev_hard_header, |
| 514 | .rebuild = vlan_dev_rebuild_header, |
| 515 | .parse = eth_header_parse, |
| 516 | }; |
| 517 | |
Eric Dumazet | 213b15c | 2010-11-11 09:42:45 +0000 | [diff] [blame] | 518 | static const struct net_device_ops vlan_netdev_ops; |
Eric Dumazet | f7d1b9f | 2008-12-25 16:45:19 -0800 | [diff] [blame] | 519 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 520 | static int vlan_dev_init(struct net_device *dev) |
| 521 | { |
Patrick McHardy | 9dfebcc | 2008-01-21 00:26:07 -0800 | [diff] [blame] | 522 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 523 | int subclass = 0; |
| 524 | |
Jay Vosburgh | adc667e | 2009-04-25 18:03:35 -0700 | [diff] [blame] | 525 | netif_carrier_off(dev); |
| 526 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 527 | /* IFF_BROADCAST|IFF_MULTICAST; ??? */ |
John Fastabend | 194dbcc | 2010-05-12 21:31:06 +0000 | [diff] [blame] | 528 | dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | |
| 529 | IFF_MASTER | IFF_SLAVE); |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 530 | dev->iflink = real_dev->ifindex; |
| 531 | dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | |
| 532 | (1<<__LINK_STATE_DORMANT))) | |
| 533 | (1<<__LINK_STATE_PRESENT); |
| 534 | |
Michał Mirosław | 62f2a3a | 2011-07-13 14:10:29 +0000 | [diff] [blame] | 535 | dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG | |
| 536 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | |
| 537 | NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM | |
| 538 | NETIF_F_ALL_FCOE; |
| 539 | |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 540 | dev->features |= real_dev->vlan_features | NETIF_F_LLTX; |
Alexander Duyck | 1ae4be2 | 2008-09-11 20:17:05 -0700 | [diff] [blame] | 541 | dev->gso_max_size = real_dev->gso_max_size; |
Patrick McHardy | 5fb1357 | 2008-05-20 14:54:50 -0700 | [diff] [blame] | 542 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 543 | /* ipv6 shared card related stuff */ |
| 544 | dev->dev_id = real_dev->dev_id; |
| 545 | |
| 546 | if (is_zero_ether_addr(dev->dev_addr)) |
| 547 | memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); |
| 548 | if (is_zero_ether_addr(dev->broadcast)) |
| 549 | memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); |
| 550 | |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 551 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 552 | dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid; |
| 553 | #endif |
| 554 | |
Eric Dumazet | d870bfb | 2011-03-18 00:27:27 +0000 | [diff] [blame] | 555 | dev->needed_headroom = real_dev->needed_headroom; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 556 | if (real_dev->features & NETIF_F_HW_VLAN_TX) { |
| 557 | dev->header_ops = real_dev->header_ops; |
| 558 | dev->hard_header_len = real_dev->hard_header_len; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 559 | } else { |
| 560 | dev->header_ops = &vlan_header_ops; |
| 561 | dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 562 | } |
| 563 | |
Eric Dumazet | 213b15c | 2010-11-11 09:42:45 +0000 | [diff] [blame] | 564 | dev->netdev_ops = &vlan_netdev_ops; |
John Fastabend | 636e19a | 2010-10-30 14:22:42 +0000 | [diff] [blame] | 565 | |
Joonwoo Park | 26a2523 | 2008-07-08 03:22:16 -0700 | [diff] [blame] | 566 | if (is_vlan_dev(real_dev)) |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 567 | subclass = 1; |
| 568 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 569 | vlan_dev_set_lockdep_class(dev, subclass); |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 570 | |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 571 | vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats); |
| 572 | if (!vlan_dev_info(dev)->vlan_pcpu_stats) |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 573 | return -ENOMEM; |
| 574 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 575 | return 0; |
| 576 | } |
| 577 | |
Pavel Emelyanov | 2355632 | 2008-04-04 12:45:12 -0700 | [diff] [blame] | 578 | static void vlan_dev_uninit(struct net_device *dev) |
| 579 | { |
| 580 | struct vlan_priority_tci_mapping *pm; |
| 581 | struct vlan_dev_info *vlan = vlan_dev_info(dev); |
| 582 | int i; |
| 583 | |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 584 | free_percpu(vlan->vlan_pcpu_stats); |
| 585 | vlan->vlan_pcpu_stats = NULL; |
Pavel Emelyanov | 2355632 | 2008-04-04 12:45:12 -0700 | [diff] [blame] | 586 | for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) { |
| 587 | while ((pm = vlan->egress_priority_map[i]) != NULL) { |
| 588 | vlan->egress_priority_map[i] = pm->next; |
| 589 | kfree(pm); |
| 590 | } |
| 591 | } |
| 592 | } |
| 593 | |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 594 | static u32 vlan_dev_fix_features(struct net_device *dev, u32 features) |
| 595 | { |
| 596 | struct net_device *real_dev = vlan_dev_info(dev)->real_dev; |
Shan Wei | 712ae51 | 2011-07-05 20:43:12 -0700 | [diff] [blame] | 597 | u32 old_features = features; |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 598 | |
Michał Mirosław | f0a619c | 2011-05-06 07:56:29 +0000 | [diff] [blame] | 599 | features &= real_dev->features; |
| 600 | features &= real_dev->vlan_features; |
Shan Wei | 712ae51 | 2011-07-05 20:43:12 -0700 | [diff] [blame] | 601 | |
Michał Mirosław | 6c9c1b5 | 2011-07-14 14:39:29 -0700 | [diff] [blame] | 602 | features |= old_features & NETIF_F_SOFT_FEATURES; |
Shan Wei | 712ae51 | 2011-07-05 20:43:12 -0700 | [diff] [blame] | 603 | |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 604 | if (dev_ethtool_get_rx_csum(real_dev)) |
| 605 | features |= NETIF_F_RXCSUM; |
Michał Mirosław | f0a619c | 2011-05-06 07:56:29 +0000 | [diff] [blame] | 606 | features |= NETIF_F_LLTX; |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 607 | |
| 608 | return features; |
| 609 | } |
| 610 | |
Stephen Hemminger | b3020061 | 2008-10-28 22:12:36 -0700 | [diff] [blame] | 611 | static int vlan_ethtool_get_settings(struct net_device *dev, |
| 612 | struct ethtool_cmd *cmd) |
| 613 | { |
| 614 | const struct vlan_dev_info *vlan = vlan_dev_info(dev); |
Jiri Pirko | 4bc71cb | 2011-09-03 03:34:30 +0000 | [diff] [blame] | 615 | |
| 616 | return __ethtool_get_settings(vlan->real_dev, cmd); |
Stephen Hemminger | b3020061 | 2008-10-28 22:12:36 -0700 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | static void vlan_ethtool_get_drvinfo(struct net_device *dev, |
| 620 | struct ethtool_drvinfo *info) |
| 621 | { |
| 622 | strcpy(info->driver, vlan_fullname); |
| 623 | strcpy(info->version, vlan_version); |
| 624 | strcpy(info->fw_version, "N/A"); |
| 625 | } |
| 626 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 627 | static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 628 | { |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 629 | |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 630 | if (vlan_dev_info(dev)->vlan_pcpu_stats) { |
| 631 | struct vlan_pcpu_stats *p; |
| 632 | u32 rx_errors = 0, tx_dropped = 0; |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 633 | int i; |
| 634 | |
| 635 | for_each_possible_cpu(i) { |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 636 | u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes; |
Eric Dumazet | 9618e2f | 2010-06-24 00:55:06 +0000 | [diff] [blame] | 637 | unsigned int start; |
| 638 | |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 639 | p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i); |
Eric Dumazet | 9618e2f | 2010-06-24 00:55:06 +0000 | [diff] [blame] | 640 | do { |
| 641 | start = u64_stats_fetch_begin_bh(&p->syncp); |
| 642 | rxpackets = p->rx_packets; |
| 643 | rxbytes = p->rx_bytes; |
| 644 | rxmulticast = p->rx_multicast; |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 645 | txpackets = p->tx_packets; |
| 646 | txbytes = p->tx_bytes; |
Eric Dumazet | 9618e2f | 2010-06-24 00:55:06 +0000 | [diff] [blame] | 647 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 648 | |
| 649 | stats->rx_packets += rxpackets; |
| 650 | stats->rx_bytes += rxbytes; |
| 651 | stats->multicast += rxmulticast; |
| 652 | stats->tx_packets += txpackets; |
| 653 | stats->tx_bytes += txbytes; |
| 654 | /* rx_errors & tx_dropped are u32 */ |
| 655 | rx_errors += p->rx_errors; |
| 656 | tx_dropped += p->tx_dropped; |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 657 | } |
Eric Dumazet | 4af429d | 2010-11-10 23:42:00 +0000 | [diff] [blame] | 658 | stats->rx_errors = rx_errors; |
| 659 | stats->tx_dropped = tx_dropped; |
Eric Dumazet | 9793241 | 2009-11-17 04:53:09 +0000 | [diff] [blame] | 660 | } |
| 661 | return stats; |
| 662 | } |
| 663 | |
Patrick McHardy | 75b8846 | 2008-07-08 03:22:42 -0700 | [diff] [blame] | 664 | static const struct ethtool_ops vlan_ethtool_ops = { |
Stephen Hemminger | b3020061 | 2008-10-28 22:12:36 -0700 | [diff] [blame] | 665 | .get_settings = vlan_ethtool_get_settings, |
| 666 | .get_drvinfo = vlan_ethtool_get_drvinfo, |
Patrick McHardy | 75b8846 | 2008-07-08 03:22:42 -0700 | [diff] [blame] | 667 | .get_link = ethtool_op_get_link, |
Patrick McHardy | 75b8846 | 2008-07-08 03:22:42 -0700 | [diff] [blame] | 668 | }; |
| 669 | |
Stephen Hemminger | 656299f | 2008-11-19 21:53:47 -0800 | [diff] [blame] | 670 | static const struct net_device_ops vlan_netdev_ops = { |
| 671 | .ndo_change_mtu = vlan_dev_change_mtu, |
| 672 | .ndo_init = vlan_dev_init, |
| 673 | .ndo_uninit = vlan_dev_uninit, |
| 674 | .ndo_open = vlan_dev_open, |
| 675 | .ndo_stop = vlan_dev_stop, |
Eric Dumazet | f7d1b9f | 2008-12-25 16:45:19 -0800 | [diff] [blame] | 676 | .ndo_start_xmit = vlan_dev_hard_start_xmit, |
| 677 | .ndo_validate_addr = eth_validate_addr, |
| 678 | .ndo_set_mac_address = vlan_dev_set_mac_address, |
| 679 | .ndo_set_rx_mode = vlan_dev_set_rx_mode, |
Eric Dumazet | f7d1b9f | 2008-12-25 16:45:19 -0800 | [diff] [blame] | 680 | .ndo_change_rx_flags = vlan_dev_change_rx_flags, |
| 681 | .ndo_do_ioctl = vlan_dev_ioctl, |
Frank Blaschka | cc883d1 | 2009-01-08 10:50:20 -0800 | [diff] [blame] | 682 | .ndo_neigh_setup = vlan_dev_neigh_setup, |
Eric Dumazet | 9618e2f | 2010-06-24 00:55:06 +0000 | [diff] [blame] | 683 | .ndo_get_stats64 = vlan_dev_get_stats64, |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 684 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 685 | .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, |
| 686 | .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, |
Yi Zou | 0af46d9 | 2009-08-31 12:31:55 +0000 | [diff] [blame] | 687 | .ndo_fcoe_enable = vlan_dev_fcoe_enable, |
| 688 | .ndo_fcoe_disable = vlan_dev_fcoe_disable, |
Yi Zou | d653479 | 2009-10-28 18:25:16 +0000 | [diff] [blame] | 689 | .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, |
Yi Zou | 4ea09c9 | 2011-02-01 07:22:11 +0000 | [diff] [blame] | 690 | .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, |
Vasu Dev | b85daa5 | 2009-08-14 12:41:07 +0000 | [diff] [blame] | 691 | #endif |
Michał Mirosław | 8a0427b | 2011-04-02 22:49:12 -0700 | [diff] [blame] | 692 | .ndo_fix_features = vlan_dev_fix_features, |
Eric Dumazet | f7d1b9f | 2008-12-25 16:45:19 -0800 | [diff] [blame] | 693 | }; |
| 694 | |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 695 | void vlan_setup(struct net_device *dev) |
| 696 | { |
| 697 | ether_setup(dev); |
| 698 | |
| 699 | dev->priv_flags |= IFF_802_1Q_VLAN; |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 700 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 701 | dev->tx_queue_len = 0; |
| 702 | |
Stephen Hemminger | 656299f | 2008-11-19 21:53:47 -0800 | [diff] [blame] | 703 | dev->netdev_ops = &vlan_netdev_ops; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 704 | dev->destructor = free_netdev; |
Patrick McHardy | 75b8846 | 2008-07-08 03:22:42 -0700 | [diff] [blame] | 705 | dev->ethtool_ops = &vlan_ethtool_ops; |
Patrick McHardy | ef3eb3e | 2008-01-21 00:22:11 -0800 | [diff] [blame] | 706 | |
| 707 | memset(dev->broadcast, 0, ETH_ALEN); |
| 708 | } |