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Merge branch 'ipvlan-misc' 

Mahesh Bandewar says:

====================
IPvlan misc patches

This is a collection of unrelated patches for IPvlan driver.
a. crub_skb() changes are added to ensure that the packets hit the
NF_HOOKS in masters' ns in L3 mode.
b. u16 change is bug fix while
c. the third patch is to group tx/rx variables in single cacheline
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-02-21 22:43:25 -05:00
parent 86310cc42d ab5b7013db
commit ea5b2f4406
3 changed files with 37 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/ipvlan/ipvlan.h
View File

@ -84,19 +84,19 @@ struct ipvl_addr {
#define ip4addr ipu.ip4
struct hlist_node hlnode; /* Hash-table linkage */
struct list_head anode; /* logical-interface linkage */
struct rcu_head rcu;
ipvl_hdr_type atype;
struct rcu_head rcu;
};
struct ipvl_port {
struct net_device *dev;
struct hlist_head hlhead[IPVLAN_HASH_SIZE];
struct list_head ipvlans;
struct rcu_head rcu;
u16 mode;
struct work_struct wq;
struct sk_buff_head backlog;
int count;
u16 mode;
struct rcu_head rcu;
};
static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
@ -114,8 +114,6 @@ static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
return rtnl_dereference(d->rx_handler_data);
}
void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev);
void ipvlan_set_port_mode(struct ipvl_port *port, u32 nval);
void ipvlan_init_secret(void);
unsigned int ipvlan_mac_hash(const unsigned char *addr);
rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
@ -125,7 +123,5 @@ void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr);
struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan,
const void *iaddr, bool is_v6);
bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6);
struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port,
const void *iaddr, bool is_v6);
void ipvlan_ht_addr_del(struct ipvl_addr *addr);
#endif /* __IPVLAN_H */

48
drivers/net/ipvlan/ipvlan_core.c
View File

@ -53,8 +53,8 @@ static u8 ipvlan_get_v4_hash(const void *iaddr)
IPVLAN_HASH_MASK;
}
struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port,
const void *iaddr, bool is_v6)
static struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port,
const void *iaddr, bool is_v6)
{
struct ipvl_addr *addr;
u8 hash;
@ -265,20 +265,25 @@ static int ipvlan_rcv_frame(struct ipvl_addr *addr, struct sk_buff **pskb,
struct sk_buff *skb = *pskb;
len = skb->len + ETH_HLEN;
if (unlikely(!(dev->flags & IFF_UP))) {
kfree_skb(skb);
goto out;
/* Only packets exchanged between two local slaves need to have
* device-up check as well as skb-share check.
*/
if (local) {
if (unlikely(!(dev->flags & IFF_UP))) {
kfree_skb(skb);
goto out;
}
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
goto out;
*pskb = skb;
}
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
goto out;
*pskb = skb;
skb->dev = dev;
skb->pkt_type = PACKET_HOST;
if (local) {
skb->pkt_type = PACKET_HOST;
if (dev_forward_skb(ipvlan->dev, skb) == NET_RX_SUCCESS)
success = true;
} else {
@ -342,7 +347,7 @@ static struct ipvl_addr *ipvlan_addr_lookup(struct ipvl_port *port,
return addr;
}
static int ipvlan_process_v4_outbound(struct sk_buff *skb)
static int ipvlan_process_v4_outbound(struct sk_buff *skb, bool xnet)
{
const struct iphdr *ip4h = ip_hdr(skb);
struct net_device *dev = skb->dev;
@ -365,7 +370,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
ip_rt_put(rt);
goto err;
}
skb_dst_drop(skb);
skb_scrub_packet(skb, xnet);
skb_dst_set(skb, &rt->dst);
err = ip_local_out(net, skb->sk, skb);
if (unlikely(net_xmit_eval(err)))
@ -380,7 +385,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
return ret;
}
static int ipvlan_process_v6_outbound(struct sk_buff *skb)
static int ipvlan_process_v6_outbound(struct sk_buff *skb, bool xnet)
{
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct net_device *dev = skb->dev;
@ -403,7 +408,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
dst_release(dst);
goto err;
}
skb_dst_drop(skb);
skb_scrub_packet(skb, xnet);
skb_dst_set(skb, dst);
err = ip6_local_out(net, skb->sk, skb);
if (unlikely(net_xmit_eval(err)))
@ -418,8 +423,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
return ret;
}
static int ipvlan_process_outbound(struct sk_buff *skb,
const struct ipvl_dev *ipvlan)
static int ipvlan_process_outbound(struct sk_buff *skb, bool xnet)
{
struct ethhdr *ethh = eth_hdr(skb);
int ret = NET_XMIT_DROP;
@ -443,9 +447,9 @@ static int ipvlan_process_outbound(struct sk_buff *skb,
}
if (skb->protocol == htons(ETH_P_IPV6))
ret = ipvlan_process_v6_outbound(skb);
ret = ipvlan_process_v6_outbound(skb, xnet);
else if (skb->protocol == htons(ETH_P_IP))
ret = ipvlan_process_v4_outbound(skb);
ret = ipvlan_process_v4_outbound(skb, xnet);
else {
pr_warn_ratelimited("Dropped outbound packet type=%x\n",
ntohs(skb->protocol));
@ -481,6 +485,7 @@ static int ipvlan_xmit_mode_l3(struct sk_buff *skb, struct net_device *dev)
void *lyr3h;
struct ipvl_addr *addr;
int addr_type;
bool xnet;
lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);
if (!lyr3h)
@ -491,8 +496,9 @@ static int ipvlan_xmit_mode_l3(struct sk_buff *skb, struct net_device *dev)
return ipvlan_rcv_frame(addr, &skb, true);
out:
xnet = !net_eq(dev_net(skb->dev), dev_net(ipvlan->phy_dev));
skb->dev = ipvlan->phy_dev;
return ipvlan_process_outbound(skb, ipvlan);
return ipvlan_process_outbound(skb, xnet);
}
static int ipvlan_xmit_mode_l2(struct sk_buff *skb, struct net_device *dev)

11
drivers/net/ipvlan/ipvlan_main.c
View File

@ -9,12 +9,12 @@
#include "ipvlan.h"
void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev)
static void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev)
{
ipvlan->dev->mtu = dev->mtu - ipvlan->mtu_adj;
}
void ipvlan_set_port_mode(struct ipvl_port *port, u32 nval)
static void ipvlan_set_port_mode(struct ipvl_port *port, u16 nval)
{
struct ipvl_dev *ipvlan;
@ -442,6 +442,7 @@ static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
struct ipvl_port *port;
struct net_device *phy_dev;
int err;
u16 mode = IPVLAN_MODE_L3;
if (!tb[IFLA_LINK])
return -EINVAL;
@ -460,10 +461,10 @@ static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
return err;
}
port = ipvlan_port_get_rtnl(phy_dev);
if (data && data[IFLA_IPVLAN_MODE])
port->mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
port = ipvlan_port_get_rtnl(phy_dev);
ipvlan->phy_dev = phy_dev;
ipvlan->dev = dev;
ipvlan->port = port;
@ -489,6 +490,8 @@ static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
goto ipvlan_destroy_port;
list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans);
ipvlan_set_port_mode(port, mode);
netif_stacked_transfer_operstate(phy_dev, dev);
return 0;