mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 13:00:54 +07:00
f230d1e891
It is a prep work to fix the dst_entry refcnt bugs in ip6_tunnel. This patch rename: 1. ip6_tnl_dst_check() to ip6_tnl_dst_get() to better reflect that it will take a dst refcnt in the next patch. 2. ip6_tnl_dst_store() to ip6_tnl_dst_set() to have a more conventional name matching with ip6_tnl_dst_get(). Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
#ifndef _NET_IP6_TUNNEL_H
|
|
#define _NET_IP6_TUNNEL_H
|
|
|
|
#include <linux/ipv6.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_tunnel.h>
|
|
#include <linux/ip6_tunnel.h>
|
|
|
|
#define IP6TUNNEL_ERR_TIMEO (30*HZ)
|
|
|
|
/* capable of sending packets */
|
|
#define IP6_TNL_F_CAP_XMIT 0x10000
|
|
/* capable of receiving packets */
|
|
#define IP6_TNL_F_CAP_RCV 0x20000
|
|
/* determine capability on a per-packet basis */
|
|
#define IP6_TNL_F_CAP_PER_PACKET 0x40000
|
|
|
|
struct __ip6_tnl_parm {
|
|
char name[IFNAMSIZ]; /* name of tunnel device */
|
|
int link; /* ifindex of underlying L2 interface */
|
|
__u8 proto; /* tunnel protocol */
|
|
__u8 encap_limit; /* encapsulation limit for tunnel */
|
|
__u8 hop_limit; /* hop limit for tunnel */
|
|
__be32 flowinfo; /* traffic class and flowlabel for tunnel */
|
|
__u32 flags; /* tunnel flags */
|
|
struct in6_addr laddr; /* local tunnel end-point address */
|
|
struct in6_addr raddr; /* remote tunnel end-point address */
|
|
|
|
__be16 i_flags;
|
|
__be16 o_flags;
|
|
__be32 i_key;
|
|
__be32 o_key;
|
|
};
|
|
|
|
/* IPv6 tunnel */
|
|
struct ip6_tnl {
|
|
struct ip6_tnl __rcu *next; /* next tunnel in list */
|
|
struct net_device *dev; /* virtual device associated with tunnel */
|
|
struct net *net; /* netns for packet i/o */
|
|
struct __ip6_tnl_parm parms; /* tunnel configuration parameters */
|
|
struct flowi fl; /* flowi template for xmit */
|
|
struct dst_entry *dst_cache; /* cached dst */
|
|
u32 dst_cookie;
|
|
|
|
int err_count;
|
|
unsigned long err_time;
|
|
|
|
/* These fields used only by GRE */
|
|
__u32 i_seqno; /* The last seen seqno */
|
|
__u32 o_seqno; /* The last output seqno */
|
|
int hlen; /* Precalculated GRE header length */
|
|
int mlink;
|
|
};
|
|
|
|
/* Tunnel encapsulation limit destination sub-option */
|
|
|
|
struct ipv6_tlv_tnl_enc_lim {
|
|
__u8 type; /* type-code for option */
|
|
__u8 length; /* option length */
|
|
__u8 encap_limit; /* tunnel encapsulation limit */
|
|
} __packed;
|
|
|
|
struct dst_entry *ip6_tnl_dst_get(struct ip6_tnl *t);
|
|
void ip6_tnl_dst_reset(struct ip6_tnl *t);
|
|
void ip6_tnl_dst_set(struct ip6_tnl *t, struct dst_entry *dst);
|
|
int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
const struct in6_addr *raddr);
|
|
int ip6_tnl_xmit_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
const struct in6_addr *raddr);
|
|
__u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw);
|
|
__u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
const struct in6_addr *raddr);
|
|
struct net *ip6_tnl_get_link_net(const struct net_device *dev);
|
|
int ip6_tnl_get_iflink(const struct net_device *dev);
|
|
|
|
static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct net_device_stats *stats = &dev->stats;
|
|
int pkt_len, err;
|
|
|
|
pkt_len = skb->len;
|
|
err = ip6_local_out_sk(sk, skb);
|
|
|
|
if (net_xmit_eval(err) == 0) {
|
|
struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
|
|
u64_stats_update_begin(&tstats->syncp);
|
|
tstats->tx_bytes += pkt_len;
|
|
tstats->tx_packets++;
|
|
u64_stats_update_end(&tstats->syncp);
|
|
} else {
|
|
stats->tx_errors++;
|
|
stats->tx_aborted_errors++;
|
|
}
|
|
}
|
|
#endif
|