@@ -1,6 +1,5 @@
-/*
- * IP Virtual Server
- * data structure and functionality definitions
+/* IP Virtual Server
+ * data structure and functionality definitions
*/
#ifndef _NET_IP_VS_H
@@ -12,7 +11,7 @@
#include <linux/list.h> /* for struct list_head */
#include <linux/spinlock.h> /* for struct rwlock_t */
-#include <linux/atomic.h> /* for struct atomic_t */
+#include <linux/atomic.h> /* for struct atomic_t */
#include <linux/compiler.h>
#include <linux/timer.h>
#include <linux/bug.h>
@@ -30,15 +29,13 @@
#endif
#include <net/net_namespace.h> /* Netw namespace */
-/*
- * Generic access of ipvs struct
- */
+/* Generic access of ipvs struct */
static inline struct netns_ipvs *net_ipvs(struct net* net)
{
return net->ipvs;
}
-/*
- * Get net ptr from skb in traffic cases
+
+/* Get net ptr from skb in traffic cases
* use skb_sknet when call is from userland (ioctl or netlink)
*/
static inline struct net *skb_net(const struct sk_buff *skb)
@@ -90,8 +87,8 @@ static inline struct net *skb_sknet(const struct sk_buff *skb)
return &init_net;
#endif
}
-/*
- * This one needed for single_open_net since net is stored directly in
+
+/* This one needed for single_open_net since net is stored directly in
* private not as a struct i.e. seq_file_net can't be used.
*/
static inline struct net *seq_file_single_net(struct seq_file *seq)
@@ -108,7 +105,7 @@ extern int ip_vs_conn_tab_size;
struct ip_vs_iphdr {
__u32 len; /* IPv4 simply where L4 starts
- IPv6 where L4 Transport Header starts */
+ * IPv6 where L4 Transport Header starts */
__u16 fragoffs; /* IPv6 fragment offset, 0 if first frag (or not frag)*/
__s16 protocol;
__s32 flags;
@@ -304,16 +301,11 @@ static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len,
#define LeaveFunction(level) do {} while (0)
#endif
-
-/*
- * The port number of FTP service (in network order).
- */
+/* The port number of FTP service (in network order). */
#define FTPPORT cpu_to_be16(21)
#define FTPDATA cpu_to_be16(20)
-/*
- * TCP State Values
- */
+/* TCP State Values */
enum {
IP_VS_TCP_S_NONE = 0,
IP_VS_TCP_S_ESTABLISHED,
@@ -329,25 +321,19 @@ enum {
IP_VS_TCP_S_LAST
};
-/*
- * UDP State Values
- */
+/* UDP State Values */
enum {
IP_VS_UDP_S_NORMAL,
IP_VS_UDP_S_LAST,
};
-/*
- * ICMP State Values
- */
+/* ICMP State Values */
enum {
IP_VS_ICMP_S_NORMAL,
IP_VS_ICMP_S_LAST,
};
-/*
- * SCTP State Values
- */
+/* SCTP State Values */
enum ip_vs_sctp_states {
IP_VS_SCTP_S_NONE,
IP_VS_SCTP_S_INIT1,
@@ -366,21 +352,18 @@ enum ip_vs_sctp_states {
IP_VS_SCTP_S_LAST
};
-/*
- * Delta sequence info structure
- * Each ip_vs_conn has 2 (output AND input seq. changes).
- * Only used in the VS/NAT.
+/* Delta sequence info structure
+ * Each ip_vs_conn has 2 (output AND input seq. changes).
+ * Only used in the VS/NAT.
*/
struct ip_vs_seq {
__u32 init_seq; /* Add delta from this seq */
__u32 delta; /* Delta in sequence numbers */
__u32 previous_delta; /* Delta in sequence numbers
- before last resized pkt */
+ * before last resized pkt */
};
-/*
- * counters per cpu
- */
+/* counters per cpu */
struct ip_vs_counters {
__u32 conns; /* connections scheduled */
__u32 inpkts; /* incoming packets */
@@ -388,17 +371,13 @@ struct ip_vs_counters {
__u64 inbytes; /* incoming bytes */
__u64 outbytes; /* outgoing bytes */
};
-/*
- * Stats per cpu
- */
+/* Stats per cpu */
struct ip_vs_cpu_stats {
struct ip_vs_counters ustats;
struct u64_stats_sync syncp;
};
-/*
- * IPVS statistics objects
- */
+/* IPVS statistics objects */
struct ip_vs_estimator {
struct list_head list;
@@ -491,9 +470,7 @@ struct ip_vs_protocol {
void (*timeout_change)(struct ip_vs_proto_data *pd, int flags);
};
-/*
- * protocol data per netns
- */
+/* protocol data per netns */
struct ip_vs_proto_data {
struct ip_vs_proto_data *next;
struct ip_vs_protocol *pp;
@@ -520,9 +497,7 @@ struct ip_vs_conn_param {
__u8 pe_data_len;
};
-/*
- * IP_VS structure allocated for each dynamically scheduled connection
- */
+/* IP_VS structure allocated for each dynamically scheduled connection */
struct ip_vs_conn {
struct hlist_node c_list; /* hashed list heads */
/* Protocol, addresses and port numbers */
@@ -561,17 +536,18 @@ struct ip_vs_conn {
struct ip_vs_dest *dest; /* real server */
atomic_t in_pkts; /* incoming packet counter */
- /* packet transmitter for different forwarding methods. If it
- mangles the packet, it must return NF_DROP or better NF_STOLEN,
- otherwise this must be changed to a sk_buff **.
- NF_ACCEPT can be returned when destination is local.
+ /* Packet transmitter for different forwarding methods. If it
+ * mangles the packet, it must return NF_DROP or better NF_STOLEN,
+ * otherwise this must be changed to a sk_buff **.
+ * NF_ACCEPT can be returned when destination is local.
*/
int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
/* Note: we can group the following members into a structure,
- in order to save more space, and the following members are
- only used in VS/NAT anyway */
+ * in order to save more space, and the following members are
+ * only used in VS/NAT anyway
+ */
struct ip_vs_app *app; /* bound ip_vs_app object */
void *app_data; /* Application private data */
struct ip_vs_seq in_seq; /* incoming seq. struct */
@@ -584,9 +560,7 @@ struct ip_vs_conn {
struct rcu_head rcu_head;
};
-/*
- * To save some memory in conn table when name space is disabled.
- */
+/* To save some memory in conn table when name space is disabled. */
static inline struct net *ip_vs_conn_net(const struct ip_vs_conn *cp)
{
#ifdef CONFIG_NET_NS
@@ -595,6 +569,7 @@ static inline struct net *ip_vs_conn_net(const struct ip_vs_conn *cp)
return &init_net;
#endif
}
+
static inline void ip_vs_conn_net_set(struct ip_vs_conn *cp, struct net *net)
{
#ifdef CONFIG_NET_NS
@@ -612,13 +587,12 @@ static inline int ip_vs_conn_net_eq(const struct ip_vs_conn *cp,
#endif
}
-/*
- * Extended internal versions of struct ip_vs_service_user and
- * ip_vs_dest_user for IPv6 support.
+/* Extended internal versions of struct ip_vs_service_user and ip_vs_dest_user
+ * for IPv6 support.
*
- * We need these to conveniently pass around service and destination
- * options, but unfortunately, we also need to keep the old definitions to
- * maintain userspace backwards compatibility for the setsockopt interface.
+ * We need these to conveniently pass around service and destination
+ * options, but unfortunately, we also need to keep the old definitions to
+ * maintain userspace backwards compatibility for the setsockopt interface.
*/
struct ip_vs_service_user_kern {
/* virtual service addresses */
@@ -656,8 +630,8 @@ struct ip_vs_dest_user_kern {
/*
- * The information about the virtual service offered to the net
- * and the forwarding entries
+ * The information about the virtual service offered to the net and the
+ * forwarding entries.
*/
struct ip_vs_service {
struct hlist_node s_list; /* for normal service table */
@@ -697,9 +671,8 @@ struct ip_vs_dest_dst {
struct rcu_head rcu_head;
};
-/*
- * The real server destination forwarding entry
- * with ip address, port number, and so on.
+/* The real server destination forwarding entry with ip address, port number,
+ * and so on.
*/
struct ip_vs_dest {
struct list_head n_list; /* for the dests in the service */
@@ -738,10 +711,7 @@ struct ip_vs_dest {
unsigned int in_rs_table:1; /* we are in rs_table */
};
-
-/*
- * The scheduler object
- */
+/* The scheduler object */
struct ip_vs_scheduler {
struct list_head n_list; /* d-linked list head */
char *name; /* scheduler name */
@@ -781,9 +751,7 @@ struct ip_vs_pe {
int (*show_pe_data)(const struct ip_vs_conn *cp, char *buf);
};
-/*
- * The application module object (a.k.a. app incarnation)
- */
+/* The application module object (a.k.a. app incarnation) */
struct ip_vs_app {
struct list_head a_list; /* member in app list */
int type; /* IP_VS_APP_TYPE_xxx */
@@ -799,16 +767,14 @@ struct ip_vs_app {
atomic_t usecnt; /* usage counter */
struct rcu_head rcu_head;
- /*
- * output hook: Process packet in inout direction, diff set for TCP.
+ /* output hook: Process packet in inout direction, diff set for TCP.
* Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok,
* 2=Mangled but checksum was not updated
*/
int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *,
struct sk_buff *, int *diff);
- /*
- * input hook: Process packet in outin direction, diff set for TCP.
+ /* input hook: Process packet in outin direction, diff set for TCP.
* Return: 0=Error, 1=Payload Not Mangled/Mangled but checksum is ok,
* 2=Mangled but checksum was not updated
*/
@@ -867,9 +833,7 @@ struct ipvs_master_sync_state {
struct netns_ipvs {
int gen; /* Generation */
int enable; /* enable like nf_hooks do */
- /*
- * Hash table: for real service lookups
- */
+ /* Hash table: for real service lookups */
#define IP_VS_RTAB_BITS 4
#define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS)
#define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
@@ -903,7 +867,7 @@ struct netns_ipvs {
struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
#endif
/* ip_vs_conn */
- atomic_t conn_count; /* connection counter */
+ atomic_t conn_count; /* connection counter */
/* ip_vs_ctl */
struct ip_vs_stats tot_stats; /* Statistics & est. */
@@ -990,9 +954,9 @@ struct netns_ipvs {
char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
/* net name space ptr */
struct net *net; /* Needed by timer routines */
- /* Number of heterogeneous destinations, needed because
- * heterogeneous are not supported when synchronization is
- * enabled */
+ /* Number of heterogeneous destinations, needed becaus heterogeneous
+ * are not supported when synchronization is enabled.
+ */
unsigned int mixed_address_family_dests;
};
@@ -1147,9 +1111,8 @@ static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
#endif
-/*
- * IPVS core functions
- * (from ip_vs_core.c)
+/* IPVS core functions
+ * (from ip_vs_core.c)
*/
const char *ip_vs_proto_name(unsigned int proto);
void ip_vs_init_hash_table(struct list_head *table, int rows);
@@ -1157,11 +1120,9 @@ void ip_vs_init_hash_table(struct list_head *table, int rows);
#define IP_VS_APP_TYPE_FTP 1
-/*
- * ip_vs_conn handling functions
- * (from ip_vs_conn.c)
+/* ip_vs_conn handling functions
+ * (from ip_vs_conn.c)
*/
-
enum {
IP_VS_DIR_INPUT = 0,
IP_VS_DIR_OUTPUT,
@@ -1292,9 +1253,7 @@ ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp)
atomic_inc(&ctl_cp->n_control);
}
-/*
- * IPVS netns init & cleanup functions
- */
+/* IPVS netns init & cleanup functions */
int ip_vs_estimator_net_init(struct net *net);
int ip_vs_control_net_init(struct net *net);
int ip_vs_protocol_net_init(struct net *net);
@@ -1309,9 +1268,8 @@ void ip_vs_estimator_net_cleanup(struct net *net);
void ip_vs_sync_net_cleanup(struct net *net);
void ip_vs_service_net_cleanup(struct net *net);
-/*
- * IPVS application functions
- * (from ip_vs_app.c)
+/* IPVS application functions
+ * (from ip_vs_app.c)
*/
#define IP_VS_APP_MAX_PORTS 8
struct ip_vs_app *register_ip_vs_app(struct net *net, struct ip_vs_app *app);
@@ -1331,9 +1289,7 @@ int unregister_ip_vs_pe(struct ip_vs_pe *pe);
struct ip_vs_pe *ip_vs_pe_getbyname(const char *name);
struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name);
-/*
- * Use a #define to avoid all of module.h just for these trivial ops
- */
+/* Use a #define to avoid all of module.h just for these trivial ops */
#define ip_vs_pe_get(pe) \
if (pe && pe->module) \
__module_get(pe->module);
@@ -1342,9 +1298,7 @@ struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name);
if (pe && pe->module) \
module_put(pe->module);
-/*
- * IPVS protocol functions (from ip_vs_proto.c)
- */
+/* IPVS protocol functions (from ip_vs_proto.c) */
int ip_vs_protocol_init(void);
void ip_vs_protocol_cleanup(void);
void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags);
@@ -1362,9 +1316,8 @@ extern struct ip_vs_protocol ip_vs_protocol_esp;
extern struct ip_vs_protocol ip_vs_protocol_ah;
extern struct ip_vs_protocol ip_vs_protocol_sctp;
-/*
- * Registering/unregistering scheduler functions
- * (from ip_vs_sched.c)
+/* Registering/unregistering scheduler functions
+ * (from ip_vs_sched.c)
*/
int register_ip_vs_scheduler(struct ip_vs_scheduler *scheduler);
int unregister_ip_vs_scheduler(struct ip_vs_scheduler *scheduler);
@@ -1383,10 +1336,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg);
-
-/*
- * IPVS control data and functions (from ip_vs_ctl.c)
- */
+/* IPVS control data and functions (from ip_vs_ctl.c) */
extern struct ip_vs_stats ip_vs_stats;
extern int sysctl_ip_vs_sync_ver;
@@ -1427,26 +1377,21 @@ static inline void ip_vs_dest_put_and_free(struct ip_vs_dest *dest)
kfree(dest);
}
-/*
- * IPVS sync daemon data and function prototypes
- * (from ip_vs_sync.c)
+/* IPVS sync daemon data and function prototypes
+ * (from ip_vs_sync.c)
*/
int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid);
int stop_sync_thread(struct net *net, int state);
void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp, int pkts);
-/*
- * IPVS rate estimator prototypes (from ip_vs_est.c)
- */
+/* IPVS rate estimator prototypes (from ip_vs_est.c) */
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: