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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-13 18:27:40 -0600
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-13 18:27:40 -0600
commitf0094b28f3038936c1985be64dbe83f0e950b671 (patch)
treec3a61d5583cc2b39f65ef3b01e6660696b359656 /net/core
parent13b102bf48d39d84d87bee31544f4588502649b6 (diff)
parent61dac43ee6bedd8507294c7af8959157b686c221 (diff)
downloadop-kernel-dev-f0094b28f3038936c1985be64dbe83f0e950b671.zip
op-kernel-dev-f0094b28f3038936c1985be64dbe83f0e950b671.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller: "Several networking final fixes and tidies for the merge window: 1) Changes during the merge window unintentionally took away the ability to build bluetooth modular, fix from Geert Uytterhoeven. 2) Several phy_node reference count bug fixes from Uwe Kleine-König. 3) Fix ucc_geth build failures, also from Uwe Kleine-König. 4) Fix klog false positivies when netlink messages go to network taps, by properly resetting the network header. Fix from Daniel Borkmann. 5) Sizing estimate of VF netlink messages is too small, from Jiri Benc. 6) New APM X-Gene SoC ethernet driver, from Iyappan Subramanian. 7) VLAN untagging is erroneously dependent upon whether the VLAN module is loaded or not, but there are generic dependencies that matter wrt what can be expected as the SKB enters the stack. Make the basic untagging generic code, and do it unconditionally. From Vlad Yasevich. 8) xen-netfront only has so many slots in it's transmit queue so linearize packets that have too many frags. From Zoltan Kiss. 9) Fix suspend/resume PHY handling in bcmgenet driver, from Florian Fainelli" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (55 commits) net: bcmgenet: correctly resume adapter from Wake-on-LAN net: bcmgenet: update UMAC_CMD only when link is detected net: bcmgenet: correctly suspend and resume PHY device net: bcmgenet: request and enable main clock earlier net: ethernet: myricom: myri10ge: myri10ge.c: Cleaning up missing null-terminate after strncpy call xen-netfront: Fix handling packets on compound pages with skb_linearize net: fec: Support phys probed from devicetree and fixed-link smsc: replace WARN_ON() with WARN_ON_SMP() xen-netback: Don't deschedule NAPI when carrier off net: ethernet: qlogic: qlcnic: Remove duplicate object file from Makefile wan: wanxl: Remove typedefs from struct names m68k/atari: EtherNEC - ethernet support (ne) net: ethernet: ti: cpmac.c: Cleaning up missing null-terminate after strncpy call hdlc: Remove typedefs from struct names airo_cs: Remove typedef local_info_t atmel: Remove typedef atmel_priv_ioctl com20020_cs: Remove typedef com20020_dev_t ethernet: amd: Remove typedef local_info_t net: Always untag vlan-tagged traffic on input. drivers: net: Add APM X-Gene SoC ethernet driver support. ...
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c2
-rw-r--r--net/core/rtnetlink.c3
-rw-r--r--net/core/skbuff.c53
3 files changed, 56 insertions, 2 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 1c15b18..b65a505 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3602,7 +3602,7 @@ another_round:
if (skb->protocol == cpu_to_be16(ETH_P_8021Q) ||
skb->protocol == cpu_to_be16(ETH_P_8021AD)) {
- skb = vlan_untag(skb);
+ skb = skb_vlan_untag(skb);
if (unlikely(!skb))
goto unlock;
}
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 8d39071..f0493e3 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -804,7 +804,8 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev,
(nla_total_size(sizeof(struct ifla_vf_mac)) +
nla_total_size(sizeof(struct ifla_vf_vlan)) +
nla_total_size(sizeof(struct ifla_vf_spoofchk)) +
- nla_total_size(sizeof(struct ifla_vf_rate)));
+ nla_total_size(sizeof(struct ifla_vf_rate)) +
+ nla_total_size(sizeof(struct ifla_vf_link_state)));
return size;
} else
return 0;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 224506a6..163b673 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -62,6 +62,7 @@
#include <linux/scatterlist.h>
#include <linux/errqueue.h>
#include <linux/prefetch.h>
+#include <linux/if_vlan.h>
#include <net/protocol.h>
#include <net/dst.h>
@@ -3973,3 +3974,55 @@ unsigned int skb_gso_transport_seglen(const struct sk_buff *skb)
return shinfo->gso_size;
}
EXPORT_SYMBOL_GPL(skb_gso_transport_seglen);
+
+static struct sk_buff *skb_reorder_vlan_header(struct sk_buff *skb)
+{
+ if (skb_cow(skb, skb_headroom(skb)) < 0) {
+ kfree_skb(skb);
+ return NULL;
+ }
+
+ memmove(skb->data - ETH_HLEN, skb->data - VLAN_ETH_HLEN, 2 * ETH_ALEN);
+ skb->mac_header += VLAN_HLEN;
+ return skb;
+}
+
+struct sk_buff *skb_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, skb->protocol, vlan_tci);
+
+ skb_pull_rcsum(skb, VLAN_HLEN);
+ vlan_set_encap_proto(skb, vhdr);
+
+ skb = skb_reorder_vlan_header(skb);
+ if (unlikely(!skb))
+ goto err_free;
+
+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
+ skb_reset_mac_len(skb);
+
+ return skb;
+
+err_free:
+ kfree_skb(skb);
+ return NULL;
+}
+EXPORT_SYMBOL(skb_vlan_untag);
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