ipvs: Clean up comment style in ip_vs.h
* Consistently use the multi-line comment style for networking code: /* This * That * The other thing */ * Use single-line comment style for comments with only one line of text. * In general follow the leading '*' of each line of a comment with a single space and then text. * Add missing line break between functions, remove double line break, align comments to previous lines whenever possible. Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Simon Horman
Pablo Neira Ayuso
parent
4b7fd5d97e
commit
07dcc686fa
@ -1,6 +1,5 @@
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/*
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* IP Virtual Server
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* data structure and functionality definitions
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/* IP Virtual Server
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* data structure and functionality definitions
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*/
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#ifndef _NET_IP_VS_H
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@ -12,7 +11,7 @@
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#include <linux/list.h> /* for struct list_head */
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#include <linux/spinlock.h> /* for struct rwlock_t */
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#include <linux/atomic.h> /* for struct atomic_t */
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#include <linux/atomic.h> /* for struct atomic_t */
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#include <linux/compiler.h>
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#include <linux/timer.h>
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#include <linux/bug.h>
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@ -30,15 +29,13 @@
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#endif
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#include <net/net_namespace.h> /* Netw namespace */
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/*
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* Generic access of ipvs struct
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*/
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/* Generic access of ipvs struct */
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static inline struct netns_ipvs *net_ipvs(struct net* net)
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{
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return net->ipvs;
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}
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/*
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* Get net ptr from skb in traffic cases
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/* Get net ptr from skb in traffic cases
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* use skb_sknet when call is from userland (ioctl or netlink)
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*/
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static inline struct net *skb_net(const struct sk_buff *skb)
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@ -90,8 +87,8 @@ static inline struct net *skb_sknet(const struct sk_buff *skb)
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return &init_net;
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#endif
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}
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/*
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* This one needed for single_open_net since net is stored directly in
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/* This one needed for single_open_net since net is stored directly in
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* private not as a struct i.e. seq_file_net can't be used.
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*/
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static inline struct net *seq_file_single_net(struct seq_file *seq)
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@ -108,7 +105,7 @@ extern int ip_vs_conn_tab_size;
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struct ip_vs_iphdr {
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__u32 len; /* IPv4 simply where L4 starts
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IPv6 where L4 Transport Header starts */
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* IPv6 where L4 Transport Header starts */
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__u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/
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__s16 protocol;
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__s32 flags;
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@ -304,16 +301,11 @@ static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len,
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#define LeaveFunction(level) do {} while (0)
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#endif
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/*
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* The port number of FTP service (in network order).
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*/
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/* The port number of FTP service (in network order). */
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#define FTPPORT cpu_to_be16(21)
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#define FTPDATA cpu_to_be16(20)
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/*
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* TCP State Values
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*/
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/* TCP State Values */
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enum {
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IP_VS_TCP_S_NONE = 0,
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IP_VS_TCP_S_ESTABLISHED,
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@ -329,25 +321,19 @@ enum {
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IP_VS_TCP_S_LAST
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};
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/*
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* UDP State Values
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*/
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/* UDP State Values */
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enum {
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IP_VS_UDP_S_NORMAL,
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IP_VS_UDP_S_LAST,
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};
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/*
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* ICMP State Values
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*/
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/* ICMP State Values */
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enum {
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IP_VS_ICMP_S_NORMAL,
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IP_VS_ICMP_S_LAST,
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};
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/*
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* SCTP State Values
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*/
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/* SCTP State Values */
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enum ip_vs_sctp_states {
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IP_VS_SCTP_S_NONE,
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IP_VS_SCTP_S_INIT1,
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@ -366,21 +352,18 @@ enum ip_vs_sctp_states {
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IP_VS_SCTP_S_LAST
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};
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/*
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* Delta sequence info structure
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* Each ip_vs_conn has 2 (output AND input seq. changes).
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* Only used in the VS/NAT.
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/* Delta sequence info structure
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* Each ip_vs_conn has 2 (output AND input seq. changes).
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* Only used in the VS/NAT.
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*/
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struct ip_vs_seq {
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__u32 init_seq; /* Add delta from this seq */
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__u32 delta; /* Delta in sequence numbers */
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__u32 previous_delta; /* Delta in sequence numbers
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before last resized pkt */
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* before last resized pkt */
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};
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/*
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* counters per cpu
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*/
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/* counters per cpu */
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struct ip_vs_counters {
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__u32 conns; /* connections scheduled */
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__u32 inpkts; /* incoming packets */
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@ -388,17 +371,13 @@ struct ip_vs_counters {
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__u64 inbytes; /* incoming bytes */
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__u64 outbytes; /* outgoing bytes */
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};
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/*
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* Stats per cpu
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*/
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/* Stats per cpu */
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struct ip_vs_cpu_stats {
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struct ip_vs_counters ustats;
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struct u64_stats_sync syncp;
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};
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/*
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* IPVS statistics objects
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*/
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/* IPVS statistics objects */
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struct ip_vs_estimator {
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struct list_head list;
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@ -491,9 +470,7 @@ struct ip_vs_protocol {
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void (*timeout_change)(struct ip_vs_proto_data *pd, int flags);
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};
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/*
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* protocol data per netns
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*/
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/* protocol data per netns */
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struct ip_vs_proto_data {
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struct ip_vs_proto_data *next;
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struct ip_vs_protocol *pp;
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@ -520,9 +497,7 @@ struct ip_vs_conn_param {
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__u8 pe_data_len;
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};
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/*
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* IP_VS structure allocated for each dynamically scheduled connection
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*/
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/* IP_VS structure allocated for each dynamically scheduled connection */
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struct ip_vs_conn {
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struct hlist_node c_list; /* hashed list heads */
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/* Protocol, addresses and port numbers */
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@ -561,17 +536,18 @@ struct ip_vs_conn {
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struct ip_vs_dest *dest; /* real server */
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atomic_t in_pkts; /* incoming packet counter */
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/* packet transmitter for different forwarding methods. If it
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mangles the packet, it must return NF_DROP or better NF_STOLEN,
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otherwise this must be changed to a sk_buff **.
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NF_ACCEPT can be returned when destination is local.
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/* Packet transmitter for different forwarding methods. If it
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* mangles the packet, it must return NF_DROP or better NF_STOLEN,
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* otherwise this must be changed to a sk_buff **.
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* NF_ACCEPT can be returned when destination is local.
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*/
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int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp,
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struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
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/* Note: we can group the following members into a structure,
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in order to save more space, and the following members are
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only used in VS/NAT anyway */
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* in order to save more space, and the following members are
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* only used in VS/NAT anyway
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*/
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struct ip_vs_app *app; /* bound ip_vs_app object */
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void *app_data; /* Application private data */
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struct ip_vs_seq in_seq; /* incoming seq. struct */
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@ -584,9 +560,7 @@ struct ip_vs_conn {
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struct rcu_head rcu_head;
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};
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/*
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* To save some memory in conn table when name space is disabled.
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*/
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/* To save some memory in conn table when name space is disabled. */
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static inline struct net *ip_vs_conn_net(const struct ip_vs_conn *cp)
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{
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#ifdef CONFIG_NET_NS
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@ -595,6 +569,7 @@ static inline struct net *ip_vs_conn_net(const struct ip_vs_conn *cp)
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return &init_net;
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#endif
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}
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static inline void ip_vs_conn_net_set(struct ip_vs_conn *cp, struct net *net)
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{
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#ifdef CONFIG_NET_NS
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@ -612,13 +587,12 @@ static inline int ip_vs_conn_net_eq(const struct ip_vs_conn *cp,
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#endif
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}
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/*
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* Extended internal versions of struct ip_vs_service_user and
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* ip_vs_dest_user for IPv6 support.
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/* Extended internal versions of struct ip_vs_service_user and ip_vs_dest_user
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* for IPv6 support.
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*
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* We need these to conveniently pass around service and destination
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* options, but unfortunately, we also need to keep the old definitions to
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* maintain userspace backwards compatibility for the setsockopt interface.
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* We need these to conveniently pass around service and destination
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* options, but unfortunately, we also need to keep the old definitions to
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* maintain userspace backwards compatibility for the setsockopt interface.
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*/
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struct ip_vs_service_user_kern {
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/* virtual service addresses */
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@ -656,8 +630,8 @@ struct ip_vs_dest_user_kern {
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/*
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* The information about the virtual service offered to the net
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* and the forwarding entries
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* The information about the virtual service offered to the net and the
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* forwarding entries.
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*/
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struct ip_vs_service {
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struct hlist_node s_list; /* for normal service table */
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@ -697,9 +671,8 @@ struct ip_vs_dest_dst {
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struct rcu_head rcu_head;
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};
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/*
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* The real server destination forwarding entry
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* with ip address, port number, and so on.
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/* The real server destination forwarding entry with ip address, port number,
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* and so on.
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*/
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struct ip_vs_dest {
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struct list_head n_list; /* for the dests in the service */
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@ -738,10 +711,7 @@ struct ip_vs_dest {
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unsigned int in_rs_table:1; /* we are in rs_table */
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};
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/*
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* The scheduler object
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*/
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/* The scheduler object */
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struct ip_vs_scheduler {
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struct list_head n_list; /* d-linked list head */
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char *name; /* scheduler name */
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@ -781,9 +751,7 @@ struct ip_vs_pe {
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int (*show_pe_data)(const struct ip_vs_conn *cp, char *buf);
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};
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/*
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* The application module object (a.k.a. app incarnation)
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*/
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/* The application module object (a.k.a. app incarnation) */
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struct ip_vs_app {
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struct list_head a_list; /* member in app list */
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int type; /* IP_VS_APP_TYPE_xxx */
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@ -799,16 +767,14 @@ struct ip_vs_app {
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atomic_t usecnt; /* usage counter */
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struct rcu_head rcu_head;
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/*
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* output hook: Process packet in inout direction, diff set for TCP.
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/* output hook: Process packet in inout direction, diff set for TCP.
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* Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok,
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* 2=Mangled but checksum was not updated
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*/
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int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *,
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struct sk_buff *, int *diff);
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/*
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* input hook: Process packet in outin direction, diff set for TCP.
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/* input hook: Process packet in outin direction, diff set for TCP.
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* Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok,
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* 2=Mangled but checksum was not updated
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*/
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@ -867,9 +833,7 @@ struct ipvs_master_sync_state {
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struct netns_ipvs {
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int gen; /* Generation */
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int enable; /* enable like nf_hooks do */
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/*
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* Hash table: for real service lookups
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*/
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/* Hash table: for real service lookups */
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#define IP_VS_RTAB_BITS 4
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#define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS)
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#define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
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@ -903,7 +867,7 @@ struct netns_ipvs {
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struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
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#endif
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/* ip_vs_conn */
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atomic_t conn_count; /* connection counter */
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atomic_t conn_count; /* connection counter */
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/* ip_vs_ctl */
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struct ip_vs_stats tot_stats; /* Statistics & est. */
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@ -990,9 +954,9 @@ struct netns_ipvs {
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char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
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/* net name space ptr */
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struct net *net; /* Needed by timer routines */
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/* Number of heterogeneous destinations, needed because
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* heterogeneous are not supported when synchronization is
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* enabled */
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/* Number of heterogeneous destinations, needed becaus heterogeneous
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* are not supported when synchronization is enabled.
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*/
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unsigned int mixed_address_family_dests;
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};
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@ -1147,9 +1111,8 @@ static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
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#endif
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/*
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* IPVS core functions
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* (from ip_vs_core.c)
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/* IPVS core functions
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* (from ip_vs_core.c)
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*/
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const char *ip_vs_proto_name(unsigned int proto);
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void ip_vs_init_hash_table(struct list_head *table, int rows);
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@ -1157,11 +1120,9 @@ void ip_vs_init_hash_table(struct list_head *table, int rows);
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#define IP_VS_APP_TYPE_FTP 1
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/*
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* ip_vs_conn handling functions
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* (from ip_vs_conn.c)
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/* ip_vs_conn handling functions
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* (from ip_vs_conn.c)
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*/
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enum {
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IP_VS_DIR_INPUT = 0,
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IP_VS_DIR_OUTPUT,
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@ -1292,9 +1253,7 @@ ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp)
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atomic_inc(&ctl_cp->n_control);
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}
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/*
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* IPVS netns init & cleanup functions
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*/
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/* IPVS netns init & cleanup functions */
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int ip_vs_estimator_net_init(struct net *net);
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int ip_vs_control_net_init(struct net *net);
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int ip_vs_protocol_net_init(struct net *net);
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@ -1309,9 +1268,8 @@ void ip_vs_estimator_net_cleanup(struct net *net);
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void ip_vs_sync_net_cleanup(struct net *net);
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void ip_vs_service_net_cleanup(struct net *net);
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/*
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* IPVS application functions
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* (from ip_vs_app.c)
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/* IPVS application functions
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* (from ip_vs_app.c)
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*/
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#define IP_VS_APP_MAX_PORTS 8
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struct ip_vs_app *register_ip_vs_app(struct net *net, struct ip_vs_app *app);
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@ -1331,9 +1289,7 @@ int unregister_ip_vs_pe(struct ip_vs_pe *pe);
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struct ip_vs_pe *ip_vs_pe_getbyname(const char *name);
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struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name);
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/*
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* Use a #define to avoid all of module.h just for these trivial ops
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*/
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/* Use a #define to avoid all of module.h just for these trivial ops */
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#define ip_vs_pe_get(pe) \
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if (pe && pe->module) \
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__module_get(pe->module);
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@ -1342,9 +1298,7 @@ struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name);
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if (pe && pe->module) \
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module_put(pe->module);
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/*
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* IPVS protocol functions (from ip_vs_proto.c)
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*/
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/* IPVS protocol functions (from ip_vs_proto.c) */
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int ip_vs_protocol_init(void);
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void ip_vs_protocol_cleanup(void);
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void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags);
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@ -1362,9 +1316,8 @@ extern struct ip_vs_protocol ip_vs_protocol_esp;
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extern struct ip_vs_protocol ip_vs_protocol_ah;
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extern struct ip_vs_protocol ip_vs_protocol_sctp;
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/*
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* Registering/unregistering scheduler functions
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* (from ip_vs_sched.c)
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/* Registering/unregistering scheduler functions
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* (from ip_vs_sched.c)
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*/
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int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler);
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int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler);
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@ -1383,10 +1336,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
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void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg);
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/*
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* IPVS control data and functions (from ip_vs_ctl.c)
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*/
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/* IPVS control data and functions (from ip_vs_ctl.c) */
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extern struct ip_vs_stats ip_vs_stats;
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extern int sysctl_ip_vs_sync_ver;
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@ -1427,26 +1377,21 @@ static inline void ip_vs_dest_put_and_free(struct ip_vs_dest *dest)
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kfree(dest);
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}
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/*
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* IPVS sync daemon data and function prototypes
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* (from ip_vs_sync.c)
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/* IPVS sync daemon data and function prototypes
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* (from ip_vs_sync.c)
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*/
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int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid);
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int stop_sync_thread(struct net *net, int state);
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void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp, int pkts);
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/*
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* IPVS rate estimator prototypes (from ip_vs_est.c)
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*/
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/* IPVS rate estimator prototypes (from ip_vs_est.c) */
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void ip_vs_start_estimator(struct net *net, struct ip_vs_stats *stats);
|
||||
void ip_vs_stop_estimator(struct net *net, struct ip_vs_stats *stats);
|
||||
void ip_vs_zero_estimator(struct ip_vs_stats *stats);
|
||||
void ip_vs_read_estimator(struct ip_vs_stats_user *dst,
|
||||
struct ip_vs_stats *stats);
|
||||
|
||||
/*
|
||||
* Various IPVS packet transmitters (from ip_vs_xmit.c)
|
||||
*/
|
||||
/* Various IPVS packet transmitters (from ip_vs_xmit.c) */
|
||||
int ip_vs_null_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
|
||||
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
|
||||
int ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
|
||||
@ -1477,12 +1422,10 @@ int ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SYSCTL
|
||||
/*
|
||||
* This is a simple mechanism to ignore packets when
|
||||
* we are loaded. Just set ip_vs_drop_rate to 'n' and
|
||||
* we start to drop 1/rate of the packets
|
||||
/* This is a simple mechanism to ignore packets when
|
||||
* we are loaded. Just set ip_vs_drop_rate to 'n' and
|
||||
* we start to drop 1/rate of the packets
|
||||
*/
|
||||
|
||||
static inline int ip_vs_todrop(struct netns_ipvs *ipvs)
|
||||
{
|
||||
if (!ipvs->drop_rate)
|
||||
@ -1496,9 +1439,7 @@ static inline int ip_vs_todrop(struct netns_ipvs *ipvs)
|
||||
static inline int ip_vs_todrop(struct netns_ipvs *ipvs) { return 0; }
|
||||
#endif
|
||||
|
||||
/*
|
||||
* ip_vs_fwd_tag returns the forwarding tag of the connection
|
||||
*/
|
||||
/* ip_vs_fwd_tag returns the forwarding tag of the connection */
|
||||
#define IP_VS_FWD_METHOD(cp) (cp->flags & IP_VS_CONN_F_FWD_MASK)
|
||||
|
||||
static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp)
|
||||
@ -1557,9 +1498,7 @@ static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum)
|
||||
return csum_partial(diff, sizeof(diff), oldsum);
|
||||
}
|
||||
|
||||
/*
|
||||
* Forget current conntrack (unconfirmed) and attach notrack entry
|
||||
*/
|
||||
/* Forget current conntrack (unconfirmed) and attach notrack entry */
|
||||
static inline void ip_vs_notrack(struct sk_buff *skb)
|
||||
{
|
||||
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
|
||||
@ -1576,9 +1515,8 @@ static inline void ip_vs_notrack(struct sk_buff *skb)
|
||||
}
|
||||
|
||||
#ifdef CONFIG_IP_VS_NFCT
|
||||
/*
|
||||
* Netfilter connection tracking
|
||||
* (from ip_vs_nfct.c)
|
||||
/* Netfilter connection tracking
|
||||
* (from ip_vs_nfct.c)
|
||||
*/
|
||||
static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs)
|
||||
{
|
||||
@ -1617,14 +1555,12 @@ static inline int ip_vs_confirm_conntrack(struct sk_buff *skb)
|
||||
static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp)
|
||||
{
|
||||
}
|
||||
/* CONFIG_IP_VS_NFCT */
|
||||
#endif
|
||||
#endif /* CONFIG_IP_VS_NFCT */
|
||||
|
||||
static inline int
|
||||
ip_vs_dest_conn_overhead(struct ip_vs_dest *dest)
|
||||
{
|
||||
/*
|
||||
* We think the overhead of processing active connections is 256
|
||||
/* We think the overhead of processing active connections is 256
|
||||
* times higher than that of inactive connections in average. (This
|
||||
* 256 times might not be accurate, we will change it later) We
|
||||
* use the following formula to estimate the overhead now:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user