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author | Simon Horman <horms@verge.net.au> | 2010-08-22 21:37:54 +0900 |
---|---|---|
committer | Simon Horman <horms@verge.net.au> | 2010-10-04 22:45:24 +0900 |
commit | 0d1e71b04a04b6912e50926b9987c1e72facb1f3 (patch) | |
tree | 1c431b2484ab9bb2911ba8e9e281783cbd922f06 | |
parent | 8be67a6617b3403551fccb67b1c624c659419515 (diff) | |
download | kernel_samsung_crespo-0d1e71b04a04b6912e50926b9987c1e72facb1f3.zip kernel_samsung_crespo-0d1e71b04a04b6912e50926b9987c1e72facb1f3.tar.gz kernel_samsung_crespo-0d1e71b04a04b6912e50926b9987c1e72facb1f3.tar.bz2 |
IPVS: Allow configuration of persistence engines
Allow the persistence engine of a virtual service to be set, edited
and unset.
This feature only works with the netlink user-space interface.
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Julian Anastasov <ja@ssi.bg>
-rw-r--r-- | include/linux/ip_vs.h | 3 | ||||
-rw-r--r-- | include/net/ip_vs.h | 1 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_ctl.c | 57 |
3 files changed, 58 insertions, 3 deletions
diff --git a/include/linux/ip_vs.h b/include/linux/ip_vs.h index 0a9c44d..5f43a3b 100644 --- a/include/linux/ip_vs.h +++ b/include/linux/ip_vs.h @@ -336,6 +336,9 @@ enum { IPVS_SVC_ATTR_NETMASK, /* persistent netmask */ IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */ + + IPVS_SVC_ATTR_PE_NAME, /* name of ct retriever */ + __IPVS_SVC_ATTR_MAX, }; diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index a6b93a2..52fbe23 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -444,6 +444,7 @@ struct ip_vs_service_user_kern { /* virtual service options */ char *sched_name; + char *pe_name; unsigned flags; /* virtual service flags */ unsigned timeout; /* persistent timeout in sec */ u32 netmask; /* persistent netmask */ diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 5f20caf..a697591 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1134,6 +1134,7 @@ ip_vs_add_service(struct ip_vs_service_user_kern *u, { int ret = 0; struct ip_vs_scheduler *sched = NULL; + struct ip_vs_pe *pe = NULL; struct ip_vs_service *svc = NULL; /* increase the module use count */ @@ -1147,6 +1148,16 @@ ip_vs_add_service(struct ip_vs_service_user_kern *u, goto out_err; } + if (u->pe_name && *u->pe_name) { + pe = ip_vs_pe_get(u->pe_name); + if (pe == NULL) { + pr_info("persistence engine module ip_vs_pe_%s " + "not found\n", u->pe_name); + ret = -ENOENT; + goto out_err; + } + } + #ifdef CONFIG_IP_VS_IPV6 if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { ret = -EINVAL; @@ -1184,6 +1195,10 @@ ip_vs_add_service(struct ip_vs_service_user_kern *u, goto out_err; sched = NULL; + /* Bind the ct retriever */ + ip_vs_bind_pe(svc, pe); + pe = NULL; + /* Update the virtual service counters */ if (svc->port == FTPPORT) atomic_inc(&ip_vs_ftpsvc_counter); @@ -1215,6 +1230,7 @@ ip_vs_add_service(struct ip_vs_service_user_kern *u, kfree(svc); } ip_vs_scheduler_put(sched); + ip_vs_pe_put(pe); /* decrease the module use count */ ip_vs_use_count_dec(); @@ -1230,6 +1246,7 @@ static int ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) { struct ip_vs_scheduler *sched, *old_sched; + struct ip_vs_pe *pe = NULL, *old_pe = NULL; int ret = 0; /* @@ -1242,6 +1259,17 @@ ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) } old_sched = sched; + if (u->pe_name && *u->pe_name) { + pe = ip_vs_pe_get(u->pe_name); + if (pe == NULL) { + pr_info("persistence engine module ip_vs_pe_%s " + "not found\n", u->pe_name); + ret = -ENOENT; + goto out; + } + old_pe = pe; + } + #ifdef CONFIG_IP_VS_IPV6 if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { ret = -EINVAL; @@ -1293,12 +1321,17 @@ ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) } } + old_pe = svc->pe; + if (pe != old_pe) { + ip_vs_unbind_pe(svc); + ip_vs_bind_pe(svc, pe); + } + out_unlock: write_unlock_bh(&__ip_vs_svc_lock); -#ifdef CONFIG_IP_VS_IPV6 out: -#endif ip_vs_scheduler_put(old_sched); + ip_vs_pe_put(old_pe); return ret; } @@ -1312,6 +1345,9 @@ static void __ip_vs_del_service(struct ip_vs_service *svc) { struct ip_vs_dest *dest, *nxt; struct ip_vs_scheduler *old_sched; + struct ip_vs_pe *old_pe; + + pr_info("%s: enter\n", __func__); /* Count only IPv4 services for old get/setsockopt interface */ if (svc->af == AF_INET) @@ -1324,6 +1360,11 @@ static void __ip_vs_del_service(struct ip_vs_service *svc) ip_vs_unbind_scheduler(svc); ip_vs_scheduler_put(old_sched); + /* Unbind persistence engine */ + old_pe = svc->pe; + ip_vs_unbind_pe(svc); + ip_vs_pe_put(old_pe); + /* Unbind app inc */ if (svc->inc) { ip_vs_app_inc_put(svc->inc); @@ -2026,6 +2067,8 @@ static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = { static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, struct ip_vs_service_user *usvc_compat) { + memset(usvc, 0, sizeof(*usvc)); + usvc->af = AF_INET; usvc->protocol = usvc_compat->protocol; usvc->addr.ip = usvc_compat->addr; @@ -2043,6 +2086,8 @@ static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, struct ip_vs_dest_user *udest_compat) { + memset(udest, 0, sizeof(*udest)); + udest->addr.ip = udest_compat->addr; udest->port = udest_compat->port; udest->conn_flags = udest_compat->conn_flags; @@ -2539,6 +2584,8 @@ static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, .len = IP_VS_SCHEDNAME_MAXLEN }, + [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, + .len = IP_VS_PENAME_MAXLEN }, [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, .len = sizeof(struct ip_vs_flags) }, [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, @@ -2615,6 +2662,8 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb, } NLA_PUT_STRING(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name); + if (svc->pe) + NLA_PUT_STRING(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name); NLA_PUT(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags); NLA_PUT_U32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ); NLA_PUT_U32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask); @@ -2741,11 +2790,12 @@ static int ip_vs_genl_parse_service(struct ip_vs_service_user_kern *usvc, /* If a full entry was requested, check for the additional fields */ if (full_entry) { - struct nlattr *nla_sched, *nla_flags, *nla_timeout, + struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, *nla_netmask; struct ip_vs_flags flags; nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; + nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; @@ -2763,6 +2813,7 @@ static int ip_vs_genl_parse_service(struct ip_vs_service_user_kern *usvc, usvc->flags = (usvc->flags & ~flags.mask) | (flags.flags & flags.mask); usvc->sched_name = nla_data(nla_sched); + usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; usvc->timeout = nla_get_u32(nla_timeout); usvc->netmask = nla_get_u32(nla_netmask); } |