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-rw-r--r--net/8021q/vlan.c38
-rw-r--r--net/8021q/vlan.h2
-rw-r--r--net/8021q/vlan_core.c85
-rw-r--r--net/8021q/vlan_dev.c223
4 files changed, 116 insertions, 232 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 0eb1a886b370..b2274d1fd605 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -49,11 +49,6 @@ const char vlan_version[] = DRV_VERSION;
static const char vlan_copyright[] = "Ben Greear <greearb@candelatech.com>";
static const char vlan_buggyright[] = "David S. Miller <davem@redhat.com>";
-static struct packet_type vlan_packet_type __read_mostly = {
- .type = cpu_to_be16(ETH_P_8021Q),
- .func = vlan_skb_recv, /* VLAN receive method */
-};
-
/* End of global variables definitions. */
static void vlan_group_free(struct vlan_group *grp)
@@ -128,9 +123,10 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
vlan_gvrp_request_leave(dev);
vlan_group_set_device(grp, vlan_id, NULL);
- if (!grp->killall)
- synchronize_net();
-
+ /* Because unregister_netdevice_queue() makes sure at least one rcu
+ * grace period is respected before device freeing,
+ * we dont need to call synchronize_net() here.
+ */
unregister_netdevice_queue(dev, head);
/* If the group is now empty, kill off the group. */
@@ -330,10 +326,6 @@ static void vlan_sync_address(struct net_device *dev,
static void vlan_transfer_features(struct net_device *dev,
struct net_device *vlandev)
{
- u32 old_features = vlandev->features;
-
- vlandev->features &= ~dev->vlan_features;
- vlandev->features |= dev->features & dev->vlan_features;
vlandev->gso_max_size = dev->gso_max_size;
if (dev->features & NETIF_F_HW_VLAN_TX)
@@ -344,8 +336,8 @@ static void vlan_transfer_features(struct net_device *dev,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
#endif
- if (old_features != vlandev->features)
- netdev_features_change(vlandev);
+
+ netdev_update_features(vlandev);
}
static void __vlan_device_event(struct net_device *dev, unsigned long event)
@@ -490,9 +482,6 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (dev->reg_state != NETREG_UNREGISTERING)
break;
- /* Delete all VLANs for this dev. */
- grp->killall = 1;
-
for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
@@ -511,6 +500,18 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_PRE_TYPE_CHANGE:
/* Forbid underlaying device to change its type. */
return NOTIFY_BAD;
+
+ case NETDEV_NOTIFY_PEERS:
+ case NETDEV_BONDING_FAILOVER:
+ /* Propagate to vlan devices */
+ for (i = 0; i < VLAN_N_VID; i++) {
+ vlandev = vlan_group_get_device(grp, i);
+ if (!vlandev)
+ continue;
+
+ call_netdevice_notifiers(event, vlandev);
+ }
+ break;
}
out:
@@ -691,7 +692,6 @@ static int __init vlan_proto_init(void)
if (err < 0)
goto err4;
- dev_add_pack(&vlan_packet_type);
vlan_ioctl_set(vlan_ioctl_handler);
return 0;
@@ -712,8 +712,6 @@ static void __exit vlan_cleanup_module(void)
unregister_netdevice_notifier(&vlan_notifier_block);
- dev_remove_pack(&vlan_packet_type);
-
unregister_pernet_subsys(&vlan_net_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 5687c9b95f33..c3408def8a19 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -75,8 +75,6 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
}
/* found in vlan_dev.c */
-int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *ptype, struct net_device *orig_dev);
void vlan_dev_set_ingress_priority(const struct net_device *dev,
u32 skb_prio, u16 vlan_prio);
int vlan_dev_set_egress_priority(const struct net_device *dev,
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index ce8e3ab3e7a5..41495dc2a4c9 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -4,7 +4,7 @@
#include <linux/netpoll.h>
#include "vlan.h"
-bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
+bool vlan_do_receive(struct sk_buff **skbp)
{
struct sk_buff *skb = *skbp;
u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
@@ -88,3 +88,86 @@ gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
return napi_gro_frags(napi);
}
EXPORT_SYMBOL(vlan_gro_frags);
+
+static 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 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);
+}
+
+struct sk_buff *vlan_untag(struct sk_buff *skb)
+{
+ struct vlan_hdr *vhdr;
+ u16 vlan_tci;
+
+ if (unlikely(vlan_tx_tag_present(skb))) {
+ /* vlan_tci is already set-up so leave this for another time */
+ return skb;
+ }
+
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (unlikely(!skb))
+ 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_hwaccel_put_tag(skb, vlan_tci);
+
+ skb_pull_rcsum(skb, VLAN_HLEN);
+ vlan_set_encap_proto(skb, vhdr);
+
+ skb = vlan_check_reorder_header(skb);
+ if (unlikely(!skb))
+ goto err_free;
+
+ return skb;
+
+err_free:
+ kfree_skb(skb);
+ return NULL;
+}
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index b2ff6c8d3603..58f8010e1aef 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -65,179 +65,6 @@ static int vlan_dev_rebuild_header(struct sk_buff *skb)
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_pcpu_stats *rx_stats;
- struct net_device *vlan_dev;
- 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();
- vlan_dev = vlan_find_dev(dev, vlan_id);
-
- /* If the VLAN device is defined, we use it.
- * If not, and the VID is 0, it is a 802.1p packet (not
- * really a VLAN), so we will just netif_rx it later to the
- * original interface, but with the skb->proto set to the
- * wrapped proto: we do nothing here.
- */
-
- if (!vlan_dev) {
- if (vlan_id) {
- pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
- __func__, vlan_id, dev->name);
- goto err_unlock;
- }
- rx_stats = NULL;
- } else {
- skb->dev = vlan_dev;
-
- rx_stats = this_cpu_ptr(vlan_dev_info(skb->dev)->vlan_pcpu_stats);
-
- u64_stats_update_begin(&rx_stats->syncp);
- rx_stats->rx_packets++;
- rx_stats->rx_bytes += skb->len;
-
- 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->rx_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;
- }
- u64_stats_update_end(&rx_stats->syncp);
- }
-
- skb_pull_rcsum(skb, VLAN_HLEN);
- vlan_set_encap_proto(skb, vhdr);
-
- if (vlan_dev) {
- 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:
- atomic_long_inc(&dev->rx_dropped);
- kfree_skb(skb);
- return NET_RX_DROP;
-}
-
static inline u16
vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
{
@@ -701,8 +528,8 @@ static int vlan_dev_init(struct net_device *dev)
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
- dev->features |= real_dev->features & real_dev->vlan_features;
- dev->features |= NETIF_F_LLTX;
+ dev->hw_features = real_dev->vlan_features & NETIF_F_ALL_TX_OFFLOADS;
+ dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
dev->gso_max_size = real_dev->gso_max_size;
/* ipv6 shared card related stuff */
@@ -756,6 +583,17 @@ static void vlan_dev_uninit(struct net_device *dev)
}
}
+static u32 vlan_dev_fix_features(struct net_device *dev, u32 features)
+{
+ struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
+
+ features &= (real_dev->features | NETIF_F_LLTX);
+ if (dev_ethtool_get_rx_csum(real_dev))
+ features |= NETIF_F_RXCSUM;
+
+ return features;
+}
+
static int vlan_ethtool_get_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
@@ -771,18 +609,6 @@ static void vlan_ethtool_get_drvinfo(struct net_device *dev,
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 rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
@@ -820,32 +646,10 @@ static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, st
return stats;
}
-static int vlan_ethtool_set_tso(struct net_device *dev, u32 data)
-{
- if (data) {
- struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
-
- /* Underlying device must support TSO for VLAN-tagged packets
- * and must have TSO enabled now.
- */
- if (!(real_dev->vlan_features & NETIF_F_TSO))
- return -EOPNOTSUPP;
- if (!(real_dev->features & NETIF_F_TSO))
- return -EINVAL;
- dev->features |= NETIF_F_TSO;
- } else {
- dev->features &= ~NETIF_F_TSO;
- }
- return 0;
-}
-
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,
- .set_tso = vlan_ethtool_set_tso,
};
static const struct net_device_ops vlan_netdev_ops = {
@@ -871,6 +675,7 @@ static const struct net_device_ops vlan_netdev_ops = {
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
.ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
#endif
+ .ndo_fix_features = vlan_dev_fix_features,
};
void vlan_setup(struct net_device *dev)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.