mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 18:16:44 +07:00
2d6c9ffcca
vlan/macvlan start_xmit() can inform caller of congestion with NET_XMIT_CN return value. This doesnt mean packet was dropped. Increment normal stat counters instead of tx_dropped. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
948 lines
26 KiB
C
948 lines
26 KiB
C
/* -*- linux-c -*-
|
|
* INET 802.1Q VLAN
|
|
* Ethernet-type device handling.
|
|
*
|
|
* Authors: Ben Greear <greearb@candelatech.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>
|
|
* - reset skb->pkt_type on incoming packets when MAC was changed
|
|
* - see that changed MAC is saddr for outgoing packets
|
|
* Oct 20, 2001: Ard van Breeman:
|
|
* - Fix MC-list, finally.
|
|
* - Flush MC-list on VLAN destroy.
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/ethtool.h>
|
|
#include <net/arp.h>
|
|
|
|
#include "vlan.h"
|
|
#include "vlanproc.h"
|
|
#include <linux/if_vlan.h>
|
|
|
|
/*
|
|
* Rebuild the Ethernet MAC header. This is called after an ARP
|
|
* (or in future other address resolution) has completed on this
|
|
* sk_buff. We now let ARP fill in the other fields.
|
|
*
|
|
* This routine CANNOT use cached dst->neigh!
|
|
* Really, it is used only when dst->neigh is wrong.
|
|
*
|
|
* TODO: This needs a checkup, I'm ignorant here. --BLG
|
|
*/
|
|
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);
|
|
|
|
switch (veth->h_vlan_encapsulated_proto) {
|
|
#ifdef CONFIG_INET
|
|
case htons(ETH_P_IP):
|
|
|
|
/* TODO: Confirm this will work with VLAN headers... */
|
|
return arp_find(veth->h_dest, skb);
|
|
#endif
|
|
default:
|
|
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;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 (skb_cow(skb, skb_headroom(skb)) < 0)
|
|
skb = NULL;
|
|
if (skb) {
|
|
/* Lifted from Gleb's VLAN code... */
|
|
memmove(skb->data - ETH_HLEN,
|
|
skb->data - VLAN_ETH_HLEN, 12);
|
|
skb->mac_header += VLAN_HLEN;
|
|
}
|
|
}
|
|
|
|
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.
|
|
* This is normal practice and works for any 'now in use' protocol.
|
|
*
|
|
* Also, at this point we assume that we ARE dealing exclusively with
|
|
* VLAN packets, or packets that should be made into VLAN packets based
|
|
* on a default VLAN ID.
|
|
*
|
|
* NOTE: Should be similar to ethernet/eth.c.
|
|
*
|
|
* SANITY NOTE: This method is called when a packet is moving up the stack
|
|
* towards userland. To get here, it would have already passed
|
|
* through the ethernet/eth.c eth_type_trans() method.
|
|
* 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
|
|
*
|
|
*/
|
|
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
|
|
struct packet_type *ptype, struct net_device *orig_dev)
|
|
{
|
|
struct vlan_hdr *vhdr;
|
|
struct vlan_rx_stats *rx_stats;
|
|
u16 vlan_id;
|
|
u16 vlan_tci;
|
|
|
|
skb = skb_share_check(skb, GFP_ATOMIC);
|
|
if (skb == NULL)
|
|
goto err_free;
|
|
|
|
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
|
|
goto err_free;
|
|
|
|
vhdr = (struct vlan_hdr *)skb->data;
|
|
vlan_tci = ntohs(vhdr->h_vlan_TCI);
|
|
vlan_id = vlan_tci & VLAN_VID_MASK;
|
|
|
|
rcu_read_lock();
|
|
skb->dev = __find_vlan_dev(dev, vlan_id);
|
|
if (!skb->dev) {
|
|
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
|
|
__func__, vlan_id, dev->name);
|
|
goto err_unlock;
|
|
}
|
|
|
|
rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
|
|
smp_processor_id());
|
|
rx_stats->rx_packets++;
|
|
rx_stats->rx_bytes += skb->len;
|
|
|
|
skb_pull_rcsum(skb, VLAN_HLEN);
|
|
|
|
skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
|
|
|
|
pr_debug("%s: priority: %u for TCI: %hu\n",
|
|
__func__, skb->priority, vlan_tci);
|
|
|
|
switch (skb->pkt_type) {
|
|
case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
|
|
/* stats->broadcast ++; // no such counter :-( */
|
|
break;
|
|
|
|
case PACKET_MULTICAST:
|
|
rx_stats->multicast++;
|
|
break;
|
|
|
|
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.
|
|
*/
|
|
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
|
|
skb->dev->dev_addr))
|
|
skb->pkt_type = PACKET_HOST;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
vlan_set_encap_proto(skb, vhdr);
|
|
|
|
skb = vlan_check_reorder_header(skb);
|
|
if (!skb) {
|
|
rx_stats->rx_errors++;
|
|
goto err_unlock;
|
|
}
|
|
|
|
netif_rx(skb);
|
|
rcu_read_unlock();
|
|
return NET_RX_SUCCESS;
|
|
|
|
err_unlock:
|
|
rcu_read_unlock();
|
|
err_free:
|
|
kfree_skb(skb);
|
|
return NET_RX_DROP;
|
|
}
|
|
|
|
static inline u16
|
|
vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
|
|
{
|
|
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 */
|
|
}
|
|
mp = mp->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Create the VLAN header for an arbitrary protocol layer
|
|
*
|
|
* saddr=NULL means use device source address
|
|
* daddr=NULL means leave destination address (eg unresolved arp)
|
|
*
|
|
* This is called when the SKB is moving down the stack towards the
|
|
* physical devices.
|
|
*/
|
|
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 int vhdrlen = 0;
|
|
u16 vlan_tci = 0;
|
|
int rc;
|
|
|
|
if (WARN_ON(skb_headroom(skb) < dev->hard_header_len))
|
|
return -ENOSPC;
|
|
|
|
if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
|
|
vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
|
|
|
|
vlan_tci = vlan_dev_info(dev)->vlan_id;
|
|
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
|
|
vhdr->h_vlan_TCI = htons(vlan_tci);
|
|
|
|
/*
|
|
* Set the protocol type. For a packet of type ETH_P_802_3/2 we
|
|
* put the length in here instead.
|
|
*/
|
|
if (type != ETH_P_802_3 && type != ETH_P_802_2)
|
|
vhdr->h_vlan_encapsulated_proto = htons(type);
|
|
else
|
|
vhdr->h_vlan_encapsulated_proto = htons(len);
|
|
|
|
skb->protocol = htons(ETH_P_8021Q);
|
|
type = ETH_P_8021Q;
|
|
vhdrlen = VLAN_HLEN;
|
|
}
|
|
|
|
/* Before delegating work to the lower layer, enter our MAC-address */
|
|
if (saddr == NULL)
|
|
saddr = dev->dev_addr;
|
|
|
|
/* Now make the underlying real hard header */
|
|
dev = vlan_dev_info(dev)->real_dev;
|
|
rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
|
|
if (rc > 0)
|
|
rc += vhdrlen;
|
|
return rc;
|
|
}
|
|
|
|
static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
int i = skb_get_queue_mapping(skb);
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
|
|
unsigned int len;
|
|
int ret;
|
|
|
|
/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
|
|
*
|
|
* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
|
|
* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
|
|
*/
|
|
if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
|
|
vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
|
|
unsigned int orig_headroom = skb_headroom(skb);
|
|
u16 vlan_tci;
|
|
|
|
vlan_dev_info(dev)->cnt_encap_on_xmit++;
|
|
|
|
vlan_tci = vlan_dev_info(dev)->vlan_id;
|
|
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
|
|
skb = __vlan_put_tag(skb, vlan_tci);
|
|
if (!skb) {
|
|
txq->tx_dropped++;
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (orig_headroom < VLAN_HLEN)
|
|
vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
|
|
}
|
|
|
|
|
|
skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
|
|
len = skb->len;
|
|
ret = dev_queue_xmit(skb);
|
|
|
|
if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
|
|
txq->tx_packets++;
|
|
txq->tx_bytes += len;
|
|
} else
|
|
txq->tx_dropped++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
int i = skb_get_queue_mapping(skb);
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
u16 vlan_tci;
|
|
unsigned int len;
|
|
int ret;
|
|
|
|
vlan_tci = vlan_dev_info(dev)->vlan_id;
|
|
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
|
|
skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
|
|
|
|
skb->dev = vlan_dev_info(dev)->real_dev;
|
|
len = skb->len;
|
|
ret = dev_queue_xmit(skb);
|
|
|
|
if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
|
|
txq->tx_packets++;
|
|
txq->tx_bytes += len;
|
|
} else
|
|
txq->tx_dropped++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb)
|
|
{
|
|
struct net_device *rdev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = rdev->netdev_ops;
|
|
|
|
return ops->ndo_select_queue(rdev, skb);
|
|
}
|
|
|
|
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)
|
|
return -ERANGE;
|
|
|
|
dev->mtu = new_mtu;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void vlan_dev_set_ingress_priority(const struct net_device *dev,
|
|
u32 skb_prio, u16 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, u16 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 << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
|
|
|
|
/* 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_change_flags(const struct net_device *dev, u32 flags, u32 mask)
|
|
{
|
|
struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
u32 old_flags = vlan->flags;
|
|
|
|
if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
|
|
VLAN_FLAG_LOOSE_BINDING))
|
|
return -EINVAL;
|
|
|
|
vlan->flags = (old_flags & ~mask) | (flags & mask);
|
|
|
|
if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
|
|
if (vlan->flags & VLAN_FLAG_GVRP)
|
|
vlan_gvrp_request_join(dev);
|
|
else
|
|
vlan_gvrp_request_leave(dev);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
|
|
{
|
|
strncpy(result, vlan_dev_info(dev)->real_dev->name, 23);
|
|
}
|
|
|
|
static 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) &&
|
|
!(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
|
|
return -ENETDOWN;
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
|
|
err = dev_uc_add(real_dev, dev->dev_addr);
|
|
if (err < 0)
|
|
goto out;
|
|
}
|
|
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
err = dev_set_allmulti(real_dev, 1);
|
|
if (err < 0)
|
|
goto del_unicast;
|
|
}
|
|
if (dev->flags & IFF_PROMISC) {
|
|
err = dev_set_promiscuity(real_dev, 1);
|
|
if (err < 0)
|
|
goto clear_allmulti;
|
|
}
|
|
|
|
memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
|
|
|
|
if (vlan->flags & VLAN_FLAG_GVRP)
|
|
vlan_gvrp_request_join(dev);
|
|
|
|
netif_carrier_on(dev);
|
|
return 0;
|
|
|
|
clear_allmulti:
|
|
if (dev->flags & IFF_ALLMULTI)
|
|
dev_set_allmulti(real_dev, -1);
|
|
del_unicast:
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_uc_del(real_dev, dev->dev_addr);
|
|
out:
|
|
netif_carrier_off(dev);
|
|
return err;
|
|
}
|
|
|
|
static int vlan_dev_stop(struct net_device *dev)
|
|
{
|
|
struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
struct net_device *real_dev = vlan->real_dev;
|
|
|
|
if (vlan->flags & VLAN_FLAG_GVRP)
|
|
vlan_gvrp_request_leave(dev);
|
|
|
|
dev_mc_unsync(real_dev, dev);
|
|
dev_uc_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_uc_del(real_dev, dev->dev_addr);
|
|
|
|
netif_carrier_off(dev);
|
|
return 0;
|
|
}
|
|
|
|
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 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_uc_add(real_dev, addr->sa_data);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
|
|
dev_uc_del(real_dev, dev->dev_addr);
|
|
|
|
out:
|
|
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
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 (netif_device_present(real_dev) && ops->ndo_do_ioctl)
|
|
err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);
|
|
break;
|
|
}
|
|
|
|
if (!err)
|
|
ifr->ifr_ifru = ifrr.ifr_ifru;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int err = 0;
|
|
|
|
if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
|
|
err = ops->ndo_neigh_setup(real_dev, pa);
|
|
|
|
return err;
|
|
}
|
|
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
|
|
struct scatterlist *sgl, unsigned int sgc)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int rc = 0;
|
|
|
|
if (ops->ndo_fcoe_ddp_setup)
|
|
rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int len = 0;
|
|
|
|
if (ops->ndo_fcoe_ddp_done)
|
|
len = ops->ndo_fcoe_ddp_done(real_dev, xid);
|
|
|
|
return len;
|
|
}
|
|
|
|
static int vlan_dev_fcoe_enable(struct net_device *dev)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int rc = -EINVAL;
|
|
|
|
if (ops->ndo_fcoe_enable)
|
|
rc = ops->ndo_fcoe_enable(real_dev);
|
|
return rc;
|
|
}
|
|
|
|
static int vlan_dev_fcoe_disable(struct net_device *dev)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int rc = -EINVAL;
|
|
|
|
if (ops->ndo_fcoe_disable)
|
|
rc = ops->ndo_fcoe_disable(real_dev);
|
|
return rc;
|
|
}
|
|
|
|
static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
const struct net_device_ops *ops = real_dev->netdev_ops;
|
|
int rc = -EINVAL;
|
|
|
|
if (ops->ndo_fcoe_get_wwn)
|
|
rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
static void vlan_dev_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);
|
|
}
|
|
|
|
static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
|
|
{
|
|
dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
|
|
dev_uc_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 struct lock_class_key vlan_netdev_addr_lock_key;
|
|
|
|
static void vlan_dev_set_lockdep_one(struct net_device *dev,
|
|
struct netdev_queue *txq,
|
|
void *_subclass)
|
|
{
|
|
lockdep_set_class_and_subclass(&txq->_xmit_lock,
|
|
&vlan_netdev_xmit_lock_key,
|
|
*(int *)_subclass);
|
|
}
|
|
|
|
static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
|
|
{
|
|
lockdep_set_class_and_subclass(&dev->addr_list_lock,
|
|
&vlan_netdev_addr_lock_key,
|
|
subclass);
|
|
netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
|
|
}
|
|
|
|
static const struct header_ops vlan_header_ops = {
|
|
.create = vlan_dev_hard_header,
|
|
.rebuild = vlan_dev_rebuild_header,
|
|
.parse = eth_header_parse,
|
|
};
|
|
|
|
static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops,
|
|
vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq;
|
|
|
|
static int vlan_dev_init(struct net_device *dev)
|
|
{
|
|
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
|
|
int subclass = 0;
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
/* IFF_BROADCAST|IFF_MULTICAST; ??? */
|
|
dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI);
|
|
dev->iflink = real_dev->ifindex;
|
|
dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
|
|
(1<<__LINK_STATE_DORMANT))) |
|
|
(1<<__LINK_STATE_PRESENT);
|
|
|
|
dev->features |= real_dev->features & real_dev->vlan_features;
|
|
dev->gso_max_size = real_dev->gso_max_size;
|
|
|
|
/* 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 defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
|
|
#endif
|
|
|
|
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;
|
|
if (real_dev->netdev_ops->ndo_select_queue)
|
|
dev->netdev_ops = &vlan_netdev_accel_ops_sq;
|
|
else
|
|
dev->netdev_ops = &vlan_netdev_accel_ops;
|
|
} else {
|
|
dev->header_ops = &vlan_header_ops;
|
|
dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
|
|
if (real_dev->netdev_ops->ndo_select_queue)
|
|
dev->netdev_ops = &vlan_netdev_ops_sq;
|
|
else
|
|
dev->netdev_ops = &vlan_netdev_ops;
|
|
}
|
|
|
|
if (is_vlan_dev(real_dev))
|
|
subclass = 1;
|
|
|
|
vlan_dev_set_lockdep_class(dev, subclass);
|
|
|
|
vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats);
|
|
if (!vlan_dev_info(dev)->vlan_rx_stats)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void vlan_dev_uninit(struct net_device *dev)
|
|
{
|
|
struct vlan_priority_tci_mapping *pm;
|
|
struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
int i;
|
|
|
|
free_percpu(vlan->vlan_rx_stats);
|
|
vlan->vlan_rx_stats = NULL;
|
|
for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
|
|
while ((pm = vlan->egress_priority_map[i]) != NULL) {
|
|
vlan->egress_priority_map[i] = pm->next;
|
|
kfree(pm);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int vlan_ethtool_get_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
return dev_ethtool_get_settings(vlan->real_dev, cmd);
|
|
}
|
|
|
|
static void vlan_ethtool_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strcpy(info->driver, vlan_fullname);
|
|
strcpy(info->version, vlan_version);
|
|
strcpy(info->fw_version, "N/A");
|
|
}
|
|
|
|
static u32 vlan_ethtool_get_rx_csum(struct net_device *dev)
|
|
{
|
|
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
return dev_ethtool_get_rx_csum(vlan->real_dev);
|
|
}
|
|
|
|
static u32 vlan_ethtool_get_flags(struct net_device *dev)
|
|
{
|
|
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
|
|
return dev_ethtool_get_flags(vlan->real_dev);
|
|
}
|
|
|
|
static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev)
|
|
{
|
|
struct net_device_stats *stats = &dev->stats;
|
|
|
|
dev_txq_stats_fold(dev, stats);
|
|
|
|
if (vlan_dev_info(dev)->vlan_rx_stats) {
|
|
struct vlan_rx_stats *p, rx = {0};
|
|
int i;
|
|
|
|
for_each_possible_cpu(i) {
|
|
p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i);
|
|
rx.rx_packets += p->rx_packets;
|
|
rx.rx_bytes += p->rx_bytes;
|
|
rx.rx_errors += p->rx_errors;
|
|
rx.multicast += p->multicast;
|
|
}
|
|
stats->rx_packets = rx.rx_packets;
|
|
stats->rx_bytes = rx.rx_bytes;
|
|
stats->rx_errors = rx.rx_errors;
|
|
stats->multicast = rx.multicast;
|
|
}
|
|
return stats;
|
|
}
|
|
|
|
static const struct ethtool_ops vlan_ethtool_ops = {
|
|
.get_settings = vlan_ethtool_get_settings,
|
|
.get_drvinfo = vlan_ethtool_get_drvinfo,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_rx_csum = vlan_ethtool_get_rx_csum,
|
|
.get_flags = vlan_ethtool_get_flags,
|
|
};
|
|
|
|
static const struct net_device_ops vlan_netdev_ops = {
|
|
.ndo_change_mtu = vlan_dev_change_mtu,
|
|
.ndo_init = vlan_dev_init,
|
|
.ndo_uninit = vlan_dev_uninit,
|
|
.ndo_open = vlan_dev_open,
|
|
.ndo_stop = vlan_dev_stop,
|
|
.ndo_start_xmit = vlan_dev_hard_start_xmit,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = vlan_dev_set_mac_address,
|
|
.ndo_set_rx_mode = vlan_dev_set_rx_mode,
|
|
.ndo_set_multicast_list = vlan_dev_set_rx_mode,
|
|
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
|
|
.ndo_do_ioctl = vlan_dev_ioctl,
|
|
.ndo_neigh_setup = vlan_dev_neigh_setup,
|
|
.ndo_get_stats = vlan_dev_get_stats,
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
|
|
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
|
|
.ndo_fcoe_enable = vlan_dev_fcoe_enable,
|
|
.ndo_fcoe_disable = vlan_dev_fcoe_disable,
|
|
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
|
|
#endif
|
|
};
|
|
|
|
static const struct net_device_ops vlan_netdev_accel_ops = {
|
|
.ndo_change_mtu = vlan_dev_change_mtu,
|
|
.ndo_init = vlan_dev_init,
|
|
.ndo_uninit = vlan_dev_uninit,
|
|
.ndo_open = vlan_dev_open,
|
|
.ndo_stop = vlan_dev_stop,
|
|
.ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = vlan_dev_set_mac_address,
|
|
.ndo_set_rx_mode = vlan_dev_set_rx_mode,
|
|
.ndo_set_multicast_list = vlan_dev_set_rx_mode,
|
|
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
|
|
.ndo_do_ioctl = vlan_dev_ioctl,
|
|
.ndo_neigh_setup = vlan_dev_neigh_setup,
|
|
.ndo_get_stats = vlan_dev_get_stats,
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
|
|
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
|
|
.ndo_fcoe_enable = vlan_dev_fcoe_enable,
|
|
.ndo_fcoe_disable = vlan_dev_fcoe_disable,
|
|
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
|
|
#endif
|
|
};
|
|
|
|
static const struct net_device_ops vlan_netdev_ops_sq = {
|
|
.ndo_select_queue = vlan_dev_select_queue,
|
|
.ndo_change_mtu = vlan_dev_change_mtu,
|
|
.ndo_init = vlan_dev_init,
|
|
.ndo_uninit = vlan_dev_uninit,
|
|
.ndo_open = vlan_dev_open,
|
|
.ndo_stop = vlan_dev_stop,
|
|
.ndo_start_xmit = vlan_dev_hard_start_xmit,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = vlan_dev_set_mac_address,
|
|
.ndo_set_rx_mode = vlan_dev_set_rx_mode,
|
|
.ndo_set_multicast_list = vlan_dev_set_rx_mode,
|
|
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
|
|
.ndo_do_ioctl = vlan_dev_ioctl,
|
|
.ndo_neigh_setup = vlan_dev_neigh_setup,
|
|
.ndo_get_stats = vlan_dev_get_stats,
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
|
|
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
|
|
.ndo_fcoe_enable = vlan_dev_fcoe_enable,
|
|
.ndo_fcoe_disable = vlan_dev_fcoe_disable,
|
|
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
|
|
#endif
|
|
};
|
|
|
|
static const struct net_device_ops vlan_netdev_accel_ops_sq = {
|
|
.ndo_select_queue = vlan_dev_select_queue,
|
|
.ndo_change_mtu = vlan_dev_change_mtu,
|
|
.ndo_init = vlan_dev_init,
|
|
.ndo_uninit = vlan_dev_uninit,
|
|
.ndo_open = vlan_dev_open,
|
|
.ndo_stop = vlan_dev_stop,
|
|
.ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = vlan_dev_set_mac_address,
|
|
.ndo_set_rx_mode = vlan_dev_set_rx_mode,
|
|
.ndo_set_multicast_list = vlan_dev_set_rx_mode,
|
|
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
|
|
.ndo_do_ioctl = vlan_dev_ioctl,
|
|
.ndo_neigh_setup = vlan_dev_neigh_setup,
|
|
.ndo_get_stats = vlan_dev_get_stats,
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
|
|
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
|
|
.ndo_fcoe_enable = vlan_dev_fcoe_enable,
|
|
.ndo_fcoe_disable = vlan_dev_fcoe_disable,
|
|
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
|
|
#endif
|
|
};
|
|
|
|
void vlan_setup(struct net_device *dev)
|
|
{
|
|
ether_setup(dev);
|
|
|
|
dev->priv_flags |= IFF_802_1Q_VLAN;
|
|
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
|
|
dev->tx_queue_len = 0;
|
|
|
|
dev->netdev_ops = &vlan_netdev_ops;
|
|
dev->destructor = free_netdev;
|
|
dev->ethtool_ops = &vlan_ethtool_ops;
|
|
|
|
memset(dev->broadcast, 0, ETH_ALEN);
|
|
}
|