| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 5 Jun 2007 16:23:33 +0200 (MEST)
From: Patrick McHardy <kaber@...sh.net>
To: netdev@...r.kernel.org
Cc: Patrick McHardy <kaber@...sh.net>
Subject: [RFC VLAN 03/08]: Add device init callback
[VLAN]: Add device init callback
Move device initialization to ->init callback to fix an incorrect iflink
value in the initial NEWLINK message. Additionally this makes sure the
lockdep class is properly set before the device will be used.
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
commit c771a6df20db3f21062bbbf56f09f2a64535cb71
tree 7068db9a14adb06df077b6634318db72d0eb6c7d
parent 7286bd4222a1a9722b1d3b80988078b0af973a67
author Patrick McHardy <kaber@...sh.net> Tue, 29 May 2007 15:48:16 +0200
committer Patrick McHardy <kaber@...sh.net> Tue, 29 May 2007 15:48:16 +0200
net/8021q/vlan.c | 103 +++++++++++++++++++++++++++---------------------------
1 files changed, 52 insertions(+), 51 deletions(-)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 87de961..c745530 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -256,6 +256,53 @@ static int unregister_vlan_dev(struct net_device *dev)
return ret;
}
+/*
+ * 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 int vlan_dev_init(struct net_device *dev)
+{
+ struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
+
+ /* IFF_BROADCAST|IFF_MULTICAST; ??? */
+ dev->flags = real_dev->flags & ~IFF_UP;
+ dev->iflink = real_dev->ifindex;
+ dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
+ (1<<__LINK_STATE_DORMANT))) |
+ (1<<__LINK_STATE_PRESENT);
+
+ /* need 4 bytes for extra VLAN header info,
+ * hope the underlying device can handle it.
+ */
+ dev->mtu = real_dev->mtu;
+
+ /* TODO: maybe just assign it to be ETHERNET? */
+ dev->type = real_dev->type;
+
+ memcpy(dev->broadcast, real_dev->broadcast, real_dev->addr_len);
+ memcpy(dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
+ dev->addr_len = real_dev->addr_len;
+
+ if (real_dev->features & NETIF_F_HW_VLAN_TX) {
+ dev->hard_header = real_dev->hard_header;
+ dev->hard_header_len = real_dev->hard_header_len;
+ dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
+ dev->rebuild_header = real_dev->rebuild_header;
+ } else {
+ dev->hard_header = vlan_dev_hard_header;
+ dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
+ dev->hard_start_xmit = vlan_dev_hard_start_xmit;
+ dev->rebuild_header = vlan_dev_rebuild_header;
+ }
+ dev->hard_header_parse = real_dev->hard_header_parse;
+
+ lockdep_set_class(&dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
+ return 0;
+}
+
static void vlan_setup(struct net_device *new_dev)
{
SET_MODULE_OWNER(new_dev);
@@ -276,6 +323,7 @@ static void vlan_setup(struct net_device *new_dev)
/* set up method calls */
new_dev->change_mtu = vlan_dev_change_mtu;
+ new_dev->init = vlan_dev_init;
new_dev->open = vlan_dev_open;
new_dev->stop = vlan_dev_stop;
new_dev->set_mac_address = vlan_dev_set_mac_address;
@@ -304,14 +352,6 @@ static void vlan_transfer_operstate(const struct net_device *dev, struct net_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;
-
-
/* Attach a VLAN device to a mac address (ie Ethernet Card).
* Returns the device that was created, or NULL if there was
* an error of some kind.
@@ -405,52 +445,16 @@ static struct net_device *register_vlan_device(struct net_device *real_dev,
#ifdef VLAN_DEBUG
printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name);
#endif
- /* IFF_BROADCAST|IFF_MULTICAST; ??? */
- new_dev->flags = real_dev->flags;
- new_dev->flags &= ~IFF_UP;
-
- new_dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
- (1<<__LINK_STATE_DORMANT))) |
- (1<<__LINK_STATE_PRESENT);
-
- /* need 4 bytes for extra VLAN header info,
- * hope the underlying device can handle it.
- */
- new_dev->mtu = real_dev->mtu;
-
- /* TODO: maybe just assign it to be ETHERNET? */
- new_dev->type = real_dev->type;
-
- new_dev->hard_header_len = real_dev->hard_header_len;
- if (!(real_dev->features & NETIF_F_HW_VLAN_TX)) {
- /* Regular ethernet + 4 bytes (18 total). */
- new_dev->hard_header_len += VLAN_HLEN;
- }
-
- VLAN_MEM_DBG("new_dev->priv malloc, addr: %p size: %i\n",
- new_dev->priv,
- sizeof(struct vlan_dev_info));
-
- memcpy(new_dev->broadcast, real_dev->broadcast, real_dev->addr_len);
- memcpy(new_dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
- new_dev->addr_len = real_dev->addr_len;
-
- if (real_dev->features & NETIF_F_HW_VLAN_TX) {
- new_dev->hard_header = real_dev->hard_header;
- new_dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
- new_dev->rebuild_header = real_dev->rebuild_header;
- } else {
- new_dev->hard_header = vlan_dev_hard_header;
- new_dev->hard_start_xmit = vlan_dev_hard_start_xmit;
- new_dev->rebuild_header = vlan_dev_rebuild_header;
- }
- new_dev->hard_header_parse = real_dev->hard_header_parse;
VLAN_DEV_INFO(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
VLAN_DEV_INFO(new_dev)->real_dev = real_dev;
VLAN_DEV_INFO(new_dev)->dent = NULL;
VLAN_DEV_INFO(new_dev)->flags = 1;
+ VLAN_MEM_DBG("new_dev->priv malloc, addr: %p size: %i\n",
+ new_dev->priv,
+ sizeof(struct vlan_dev_info));
+
#ifdef VLAN_DEBUG
printk(VLAN_DBG "About to go find the group for idx: %i\n",
real_dev->ifindex);
@@ -459,9 +463,6 @@ static struct net_device *register_vlan_device(struct net_device *real_dev,
if (register_netdevice(new_dev))
goto out_free_newdev;
- lockdep_set_class(&new_dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
-
- new_dev->iflink = real_dev->ifindex;
vlan_transfer_operstate(real_dev, new_dev);
linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists