diff options
Diffstat (limited to 'net/ipv4/ipvs/ip_vs_proto.c')
| -rw-r--r-- | net/ipv4/ipvs/ip_vs_proto.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/net/ipv4/ipvs/ip_vs_proto.c b/net/ipv4/ipvs/ip_vs_proto.c deleted file mode 100644 index 6099a88fc20..00000000000 --- a/net/ipv4/ipvs/ip_vs_proto.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * ip_vs_proto.c: transport protocol load balancing support for IPVS - * - * Authors: Wensong Zhang <wensong@linuxvirtualserver.org> - * Julian Anastasov <ja@ssi.bg> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * Changes: - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/skbuff.h> -#include <linux/in.h> -#include <linux/ip.h> -#include <net/protocol.h> -#include <net/tcp.h> -#include <net/udp.h> -#include <asm/system.h> -#include <linux/stat.h> -#include <linux/proc_fs.h> - -#include <net/ip_vs.h> - - -/* - * IPVS protocols can only be registered/unregistered when the ipvs - * module is loaded/unloaded, so no lock is needed in accessing the - * ipvs protocol table. - */ - -#define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */ -#define IP_VS_PROTO_HASH(proto) ((proto) & (IP_VS_PROTO_TAB_SIZE-1)) - -static struct ip_vs_protocol *ip_vs_proto_table[IP_VS_PROTO_TAB_SIZE]; - - -/* - * register an ipvs protocol - */ -static int __used __init register_ip_vs_protocol(struct ip_vs_protocol *pp) -{ - unsigned hash = IP_VS_PROTO_HASH(pp->protocol); - - pp->next = ip_vs_proto_table[hash]; - ip_vs_proto_table[hash] = pp; - - if (pp->init != NULL) - pp->init(pp); - - return 0; -} - - -/* - * unregister an ipvs protocol - */ -static int unregister_ip_vs_protocol(struct ip_vs_protocol *pp) -{ - struct ip_vs_protocol **pp_p; - unsigned hash = IP_VS_PROTO_HASH(pp->protocol); - - pp_p = &ip_vs_proto_table[hash]; - for (; *pp_p; pp_p = &(*pp_p)->next) { - if (*pp_p == pp) { - *pp_p = pp->next; - if (pp->exit != NULL) - pp->exit(pp); - return 0; - } - } - - return -ESRCH; -} - - -/* - * get ip_vs_protocol object by its proto. - */ -struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto) -{ - struct ip_vs_protocol *pp; - unsigned hash = IP_VS_PROTO_HASH(proto); - - for (pp = ip_vs_proto_table[hash]; pp; pp = pp->next) { - if (pp->protocol == proto) - return pp; - } - - return NULL; -} - - -/* - * Propagate event for state change to all protocols - */ -void ip_vs_protocol_timeout_change(int flags) -{ - struct ip_vs_protocol *pp; - int i; - - for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) { - for (pp = ip_vs_proto_table[i]; pp; pp = pp->next) { - if (pp->timeout_change) - pp->timeout_change(pp, flags); - } - } -} - - -int * -ip_vs_create_timeout_table(int *table, int size) -{ - return kmemdup(table, size, GFP_ATOMIC); -} - - -/* - * Set timeout value for state specified by name - */ -int -ip_vs_set_state_timeout(int *table, int num, char **names, char *name, int to) -{ - int i; - - if (!table || !name || !to) - return -EINVAL; - - for (i = 0; i < num; i++) { - if (strcmp(names[i], name)) - continue; - table[i] = to * HZ; - return 0; - } - return -ENOENT; -} - - -const char * ip_vs_state_name(__u16 proto, int state) -{ - struct ip_vs_protocol *pp = ip_vs_proto_get(proto); - - if (pp == NULL || pp->state_name == NULL) - return (IPPROTO_IP == proto) ? "NONE" : "ERR!"; - return pp->state_name(state); -} - - -void -ip_vs_tcpudp_debug_packet(struct ip_vs_protocol *pp, - const struct sk_buff *skb, - int offset, - const char *msg) -{ - char buf[128]; - struct iphdr _iph, *ih; - - ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph); - if (ih == NULL) - sprintf(buf, "%s TRUNCATED", pp->name); - else if (ih->frag_off & htons(IP_OFFSET)) - sprintf(buf, "%s %u.%u.%u.%u->%u.%u.%u.%u frag", - pp->name, NIPQUAD(ih->saddr), - NIPQUAD(ih->daddr)); - else { - __be16 _ports[2], *pptr -; - pptr = skb_header_pointer(skb, offset + ih->ihl*4, - sizeof(_ports), _ports); - if (pptr == NULL) - sprintf(buf, "%s TRUNCATED %u.%u.%u.%u->%u.%u.%u.%u", - pp->name, - NIPQUAD(ih->saddr), - NIPQUAD(ih->daddr)); - else - sprintf(buf, "%s %u.%u.%u.%u:%u->%u.%u.%u.%u:%u", - pp->name, - NIPQUAD(ih->saddr), - ntohs(pptr[0]), - NIPQUAD(ih->daddr), - ntohs(pptr[1])); - } - - printk(KERN_DEBUG "IPVS: %s: %s\n", msg, buf); -} - - -int __init ip_vs_protocol_init(void) -{ - char protocols[64]; -#define REGISTER_PROTOCOL(p) \ - do { \ - register_ip_vs_protocol(p); \ - strcat(protocols, ", "); \ - strcat(protocols, (p)->name); \ - } while (0) - - protocols[0] = '\0'; - protocols[2] = '\0'; -#ifdef CONFIG_IP_VS_PROTO_TCP - REGISTER_PROTOCOL(&ip_vs_protocol_tcp); -#endif -#ifdef CONFIG_IP_VS_PROTO_UDP - REGISTER_PROTOCOL(&ip_vs_protocol_udp); -#endif -#ifdef CONFIG_IP_VS_PROTO_AH - REGISTER_PROTOCOL(&ip_vs_protocol_ah); -#endif -#ifdef CONFIG_IP_VS_PROTO_ESP - REGISTER_PROTOCOL(&ip_vs_protocol_esp); -#endif - IP_VS_INFO("Registered protocols (%s)\n", &protocols[2]); - - return 0; -} - - -void ip_vs_protocol_cleanup(void) -{ - struct ip_vs_protocol *pp; - int i; - - /* unregister all the ipvs protocols */ - for (i = 0; i < IP_VS_PROTO_TAB_SIZE; i++) { - while ((pp = ip_vs_proto_table[i]) != NULL) - unregister_ip_vs_protocol(pp); - } -} |