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| author |  Pravin B Shelar <pshelar@nicira.com>
| 2015-10-22 18:17:16 -0700 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2015-10-22 19:39:25 -0700 |
| commit | fc4099f17240767554ff3a73977acb78ef615404 (patch) | |
| tree | 3a4cfa8db0ec0fa58c15af23b6745dc01b8f8e38 /include | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsh... (diff) | |
| download | linux-fc4099f17240767554ff3a73977acb78ef615404.tar.gz linux-fc4099f17240767554ff3a73977acb78ef615404.tar.bz2 linux-fc4099f17240767554ff3a73977acb78ef615404.zip | |
openvswitch: Fix egress tunnel info.
While transitioning to netdev based vport we broke OVS
feature which allows user to retrieve tunnel packet egress
information for lwtunnel devices. Following patch fixes it
by introducing ndo operation to get the tunnel egress info.
Same ndo operation can be used for lwtunnel devices and compat
ovs-tnl-vport devices. So after adding such device operation
we can remove similar operation from ovs-vport.
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device").
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 7 | ||||
| -rw-r--r-- | include/net/dst_metadata.h | 32 |
2 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 2d15e3831440..210d11a75e4f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1054,6 +1054,10 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev, * This function is used to pass protocol port error state information * to the switch driver. The switch driver can react to the proto_down * by doing a phys down on the associated switch port. + * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); + * This function is used to get egress tunnel information for given skb. + * This is useful for retrieving outer tunnel header parameters while + * sampling packet. * */ struct net_device_ops { @@ -1227,6 +1231,8 @@ struct net_device_ops { int (*ndo_get_iflink)(const struct net_device *dev); int (*ndo_change_proto_down)(struct net_device *dev, bool proto_down); + int (*ndo_fill_metadata_dst)(struct net_device *dev, + struct sk_buff *skb); }; /** @@ -2203,6 +2209,7 @@ void dev_add_offload(struct packet_offload *po); void dev_remove_offload(struct packet_offload *po); int dev_get_iflink(const struct net_device *dev); +int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, unsigned short mask); struct net_device *dev_get_by_name(struct net *net, const char *name); diff --git a/include/net/dst_metadata.h b/include/net/dst_metadata.h index af9d5382f6cb..ce009710120c 100644 --- a/include/net/dst_metadata.h +++ b/include/net/dst_metadata.h @@ -60,6 +60,38 @@ static inline struct metadata_dst *tun_rx_dst(int md_size) return tun_dst; } +static inline struct metadata_dst *tun_dst_unclone(struct sk_buff *skb) +{ + struct metadata_dst *md_dst = skb_metadata_dst(skb); + int md_size = md_dst->u.tun_info.options_len; + struct metadata_dst *new_md; + + if (!md_dst) + return ERR_PTR(-EINVAL); + + new_md = metadata_dst_alloc(md_size, GFP_ATOMIC); + if (!new_md) + return ERR_PTR(-ENOMEM); + + memcpy(&new_md->u.tun_info, &md_dst->u.tun_info, + sizeof(struct ip_tunnel_info) + md_size); + skb_dst_drop(skb); + dst_hold(&new_md->dst); + skb_dst_set(skb, &new_md->dst); + return new_md; +} + +static inline struct ip_tunnel_info *skb_tunnel_info_unclone(struct sk_buff *skb) +{ + struct metadata_dst *dst; + + dst = tun_dst_unclone(skb); + if (IS_ERR(dst)) + return NULL; + + return &dst->u.tun_info; +} + static inline struct metadata_dst *ip_tun_rx_dst(struct sk_buff *skb, __be16 flags, __be64 tunnel_id, |