diff options
Diffstat (limited to 'net/netfilter/ipvs')
-rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 49 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_ah_esp.c | 2 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_sctp.c | 8 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_tcp.c | 15 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_udp.c | 15 |
5 files changed, 64 insertions, 25 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index fe9abf3cc10a..e969dad66991 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -53,6 +53,7 @@ #endif #include <net/ip_vs.h> +#include <linux/indirect_call_wrapper.h> EXPORT_SYMBOL(register_ip_vs_scheduler); @@ -70,6 +71,29 @@ EXPORT_SYMBOL(ip_vs_get_debug_level); #endif EXPORT_SYMBOL(ip_vs_new_conn_out); +#ifdef CONFIG_IP_VS_PROTO_TCP +INDIRECT_CALLABLE_DECLARE(int + tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, + struct ip_vs_conn *cp, struct ip_vs_iphdr *iph)); +#endif + +#ifdef CONFIG_IP_VS_PROTO_UDP +INDIRECT_CALLABLE_DECLARE(int + udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, + struct ip_vs_conn *cp, struct ip_vs_iphdr *iph)); +#endif + +#if defined(CONFIG_IP_VS_PROTO_TCP) && defined(CONFIG_IP_VS_PROTO_UDP) +#define SNAT_CALL(f, ...) \ + INDIRECT_CALL_2(f, tcp_snat_handler, udp_snat_handler, __VA_ARGS__) +#elif defined(CONFIG_IP_VS_PROTO_TCP) +#define SNAT_CALL(f, ...) INDIRECT_CALL_1(f, tcp_snat_handler, __VA_ARGS__) +#elif defined(CONFIG_IP_VS_PROTO_UDP) +#define SNAT_CALL(f, ...) INDIRECT_CALL_1(f, udp_snat_handler, __VA_ARGS__) +#else +#define SNAT_CALL(f, ...) f(__VA_ARGS__) +#endif + static unsigned int ip_vs_net_id __read_mostly; /* netns cnt used for uniqueness */ static atomic_t ipvs_netns_cnt = ATOMIC_INIT(0); @@ -478,7 +502,9 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb, */ if ((!skb->dev || skb->dev->flags & IFF_LOOPBACK)) { iph->hdr_flags ^= IP_VS_HDR_INVERSE; - cp = pp->conn_in_get(svc->ipvs, svc->af, skb, iph); + cp = INDIRECT_CALL_1(pp->conn_in_get, + ip_vs_conn_in_get_proto, svc->ipvs, + svc->af, skb, iph); iph->hdr_flags ^= IP_VS_HDR_INVERSE; if (cp) { @@ -972,7 +998,8 @@ static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, ip_vs_fill_iph_skb_icmp(AF_INET, skb, offset, true, &ciph); /* The embedded headers contain source and dest in reverse order */ - cp = pp->conn_out_get(ipvs, AF_INET, skb, &ciph); + cp = INDIRECT_CALL_1(pp->conn_out_get, ip_vs_conn_out_get_proto, + ipvs, AF_INET, skb, &ciph); if (!cp) return NF_ACCEPT; @@ -1028,7 +1055,8 @@ static int ip_vs_out_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb, return NF_ACCEPT; /* The embedded headers contain source and dest in reverse order */ - cp = pp->conn_out_get(ipvs, AF_INET6, skb, &ciph); + cp = INDIRECT_CALL_1(pp->conn_out_get, ip_vs_conn_out_get_proto, + ipvs, AF_INET6, skb, &ciph); if (!cp) return NF_ACCEPT; @@ -1263,7 +1291,8 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, goto drop; /* mangle the packet */ - if (pp->snat_handler && !pp->snat_handler(skb, pp, cp, iph)) + if (pp->snat_handler && + !SNAT_CALL(pp->snat_handler, skb, pp, cp, iph)) goto drop; #ifdef CONFIG_IP_VS_IPV6 @@ -1389,7 +1418,8 @@ ip_vs_out(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, in /* * Check if the packet belongs to an existing entry */ - cp = pp->conn_out_get(ipvs, af, skb, &iph); + cp = INDIRECT_CALL_1(pp->conn_out_get, ip_vs_conn_out_get_proto, + ipvs, af, skb, &iph); if (likely(cp)) { if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) @@ -1644,7 +1674,8 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related, /* The embedded headers contain source and dest in reverse order. * For IPIP this is error for request, not for reply. */ - cp = pp->conn_in_get(ipvs, AF_INET, skb, &ciph); + cp = INDIRECT_CALL_1(pp->conn_in_get, ip_vs_conn_in_get_proto, + ipvs, AF_INET, skb, &ciph); if (!cp) { int v; @@ -1796,7 +1827,8 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb, /* The embedded headers contain source and dest in reverse order * if not from localhost */ - cp = pp->conn_in_get(ipvs, AF_INET6, skb, &ciph); + cp = INDIRECT_CALL_1(pp->conn_in_get, ip_vs_conn_in_get_proto, + ipvs, AF_INET6, skb, &ciph); if (!cp) { int v; @@ -1925,7 +1957,8 @@ ip_vs_in(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, int /* * Check if the packet belongs to an existing connection entry */ - cp = pp->conn_in_get(ipvs, af, skb, &iph); + cp = INDIRECT_CALL_1(pp->conn_in_get, ip_vs_conn_in_get_proto, + ipvs, af, skb, &iph); conn_reuse_mode = sysctl_conn_reuse_mode(ipvs); if (conn_reuse_mode && !iph.fragoffs && is_new_conn(skb, &iph) && cp) { diff --git a/net/netfilter/ipvs/ip_vs_proto_ah_esp.c b/net/netfilter/ipvs/ip_vs_proto_ah_esp.c index 5320d39976e1..480598cb0f05 100644 --- a/net/netfilter/ipvs/ip_vs_proto_ah_esp.c +++ b/net/netfilter/ipvs/ip_vs_proto_ah_esp.c @@ -129,7 +129,6 @@ struct ip_vs_protocol ip_vs_protocol_ah = { .conn_out_get = ah_esp_conn_out_get, .snat_handler = NULL, .dnat_handler = NULL, - .csum_check = NULL, .state_transition = NULL, .register_app = NULL, .unregister_app = NULL, @@ -152,7 +151,6 @@ struct ip_vs_protocol ip_vs_protocol_esp = { .conn_out_get = ah_esp_conn_out_get, .snat_handler = NULL, .dnat_handler = NULL, - .csum_check = NULL, .state_transition = NULL, .register_app = NULL, .unregister_app = NULL, diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c index b0cd7d08f2a7..bc3d1625ecc8 100644 --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c @@ -10,6 +10,9 @@ #include <net/ip_vs.h> static int +sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp); + +static int sctp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, int *verdict, struct ip_vs_conn **cpp, @@ -105,7 +108,7 @@ sctp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!sctp_csum_check(cp->af, skb, pp)) return 0; /* Call application helper if needed */ @@ -152,7 +155,7 @@ sctp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!sctp_csum_check(cp->af, skb, pp)) return 0; /* Call application helper if needed */ @@ -587,7 +590,6 @@ struct ip_vs_protocol ip_vs_protocol_sctp = { .conn_out_get = ip_vs_conn_out_get_proto, .snat_handler = sctp_snat_handler, .dnat_handler = sctp_dnat_handler, - .csum_check = sctp_csum_check, .state_name = sctp_state_name, .state_transition = sctp_state_transition, .app_conn_bind = sctp_app_conn_bind, diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c index 1770fc6ce960..479419759983 100644 --- a/net/netfilter/ipvs/ip_vs_proto_tcp.c +++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c @@ -28,10 +28,14 @@ #include <net/ip6_checksum.h> #include <linux/netfilter.h> #include <linux/netfilter_ipv4.h> +#include <linux/indirect_call_wrapper.h> #include <net/ip_vs.h> static int +tcp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp); + +static int tcp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, int *verdict, struct ip_vs_conn **cpp, @@ -143,7 +147,7 @@ tcp_partial_csum_update(int af, struct tcphdr *tcph, } -static int +INDIRECT_CALLABLE_SCOPE int tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) { @@ -166,7 +170,7 @@ tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!tcp_csum_check(cp->af, skb, pp)) return 0; /* Call application helper if needed */ @@ -192,7 +196,7 @@ tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, tcp_fast_csum_update(cp->af, tcph, &cp->daddr, &cp->vaddr, cp->dport, cp->vport); if (skb->ip_summed == CHECKSUM_COMPLETE) - skb->ip_summed = (cp->app && pp->csum_check) ? + skb->ip_summed = cp->app ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE; } else { /* full checksum calculation */ @@ -244,7 +248,7 @@ tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!tcp_csum_check(cp->af, skb, pp)) return 0; /* @@ -275,7 +279,7 @@ tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, tcp_fast_csum_update(cp->af, tcph, &cp->vaddr, &cp->daddr, cp->vport, cp->dport); if (skb->ip_summed == CHECKSUM_COMPLETE) - skb->ip_summed = (cp->app && pp->csum_check) ? + skb->ip_summed = cp->app ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE; } else { /* full checksum calculation */ @@ -736,7 +740,6 @@ struct ip_vs_protocol ip_vs_protocol_tcp = { .conn_out_get = ip_vs_conn_out_get_proto, .snat_handler = tcp_snat_handler, .dnat_handler = tcp_dnat_handler, - .csum_check = tcp_csum_check, .state_name = tcp_state_name, .state_transition = tcp_state_transition, .app_conn_bind = tcp_app_conn_bind, diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c index 0f53c49025f8..646c384910fb 100644 --- a/net/netfilter/ipvs/ip_vs_proto_udp.c +++ b/net/netfilter/ipvs/ip_vs_proto_udp.c @@ -23,12 +23,16 @@ #include <linux/netfilter.h> #include <linux/netfilter_ipv4.h> #include <linux/udp.h> +#include <linux/indirect_call_wrapper.h> #include <net/ip_vs.h> #include <net/ip.h> #include <net/ip6_checksum.h> static int +udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp); + +static int udp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, int *verdict, struct ip_vs_conn **cpp, @@ -133,7 +137,7 @@ udp_partial_csum_update(int af, struct udphdr *uhdr, } -static int +INDIRECT_CALLABLE_SCOPE int udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) { @@ -156,7 +160,7 @@ udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!udp_csum_check(cp->af, skb, pp)) return 0; /* @@ -186,7 +190,7 @@ udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, udp_fast_csum_update(cp->af, udph, &cp->daddr, &cp->vaddr, cp->dport, cp->vport); if (skb->ip_summed == CHECKSUM_COMPLETE) - skb->ip_summed = (cp->app && pp->csum_check) ? + skb->ip_summed = cp->app ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE; } else { /* full checksum calculation */ @@ -239,7 +243,7 @@ udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, int ret; /* Some checks before mangling */ - if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) + if (!udp_csum_check(cp->af, skb, pp)) return 0; /* @@ -270,7 +274,7 @@ udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, udp_fast_csum_update(cp->af, udph, &cp->vaddr, &cp->daddr, cp->vport, cp->dport); if (skb->ip_summed == CHECKSUM_COMPLETE) - skb->ip_summed = (cp->app && pp->csum_check) ? + skb->ip_summed = cp->app ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE; } else { /* full checksum calculation */ @@ -494,7 +498,6 @@ struct ip_vs_protocol ip_vs_protocol_udp = { .conn_out_get = ip_vs_conn_out_get_proto, .snat_handler = udp_snat_handler, .dnat_handler = udp_dnat_handler, - .csum_check = udp_csum_check, .state_transition = udp_state_transition, .state_name = udp_state_name, .register_app = udp_register_app, |