diff options
| -rw-r--r-- | include/linux/netfilter/ipset/ip_set.h | 9 | ||||
| -rw-r--r-- | include/uapi/linux/netfilter/ipset/ip_set.h | 31 | ||||
| -rw-r--r-- | include/uapi/linux/netfilter/xt_set.h | 9 | ||||
| -rw-r--r-- | net/netfilter/ipset/ip_set_core.c | 2 | ||||
| -rw-r--r-- | net/netfilter/ipset/ip_set_list_set.c | 8 | ||||
| -rw-r--r-- | net/netfilter/xt_set.c | 70 |
6 files changed, 120 insertions, 9 deletions
diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h index 0f978eb..d80e275 100644 --- a/include/linux/netfilter/ipset/ip_set.h +++ b/include/linux/netfilter/ipset/ip_set.h @@ -76,7 +76,7 @@ struct ip_set; typedef int (*ipset_adtfn)(struct ip_set *set, void *value, const struct ip_set_ext *ext, - struct ip_set_ext *mext, u32 flags); + struct ip_set_ext *mext, u32 cmdflags); /* Kernel API function options */ struct ip_set_adt_opt { @@ -217,10 +217,15 @@ ip_set_update_counter(struct ip_set_counter *counter, const struct ip_set_ext *ext, struct ip_set_ext *mext, u32 flags) { - if (ext->packets != ULLONG_MAX) { + if (ext->packets != ULLONG_MAX && + !(flags & IPSET_FLAG_SKIP_COUNTER_UPDATE)) { ip_set_add_bytes(ext->bytes, counter); ip_set_add_packets(ext->packets, counter); } + if (flags & IPSET_FLAG_MATCH_COUNTERS) { + mext->packets = ip_set_get_packets(counter); + mext->bytes = ip_set_get_bytes(counter); + } } static inline bool diff --git a/include/uapi/linux/netfilter/ipset/ip_set.h b/include/uapi/linux/netfilter/ipset/ip_set.h index ed45267..8024cdf 100644 --- a/include/uapi/linux/netfilter/ipset/ip_set.h +++ b/include/uapi/linux/netfilter/ipset/ip_set.h @@ -145,7 +145,7 @@ enum ipset_errno { IPSET_ERR_TYPE_SPECIFIC = 4352, }; -/* Flags at command level */ +/* Flags at command level or match/target flags, lower half of cmdattrs*/ enum ipset_cmd_flags { IPSET_FLAG_BIT_EXIST = 0, IPSET_FLAG_EXIST = (1 << IPSET_FLAG_BIT_EXIST), @@ -153,10 +153,20 @@ enum ipset_cmd_flags { IPSET_FLAG_LIST_SETNAME = (1 << IPSET_FLAG_BIT_LIST_SETNAME), IPSET_FLAG_BIT_LIST_HEADER = 2, IPSET_FLAG_LIST_HEADER = (1 << IPSET_FLAG_BIT_LIST_HEADER), - IPSET_FLAG_CMD_MAX = 15, /* Lower half */ + IPSET_FLAG_BIT_SKIP_COUNTER_UPDATE = 3, + IPSET_FLAG_SKIP_COUNTER_UPDATE = + (1 << IPSET_FLAG_BIT_SKIP_COUNTER_UPDATE), + IPSET_FLAG_BIT_SKIP_SUBCOUNTER_UPDATE = 4, + IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE = + (1 << IPSET_FLAG_BIT_SKIP_SUBCOUNTER_UPDATE), + IPSET_FLAG_BIT_MATCH_COUNTERS = 5, + IPSET_FLAG_MATCH_COUNTERS = (1 << IPSET_FLAG_BIT_MATCH_COUNTERS), + IPSET_FLAG_BIT_RETURN_NOMATCH = 7, + IPSET_FLAG_RETURN_NOMATCH = (1 << IPSET_FLAG_BIT_RETURN_NOMATCH), + IPSET_FLAG_CMD_MAX = 15, }; -/* Flags at CADT attribute level */ +/* Flags at CADT attribute level, upper half of cmdattrs */ enum ipset_cadt_flags { IPSET_FLAG_BIT_BEFORE = 0, IPSET_FLAG_BEFORE = (1 << IPSET_FLAG_BIT_BEFORE), @@ -166,7 +176,7 @@ enum ipset_cadt_flags { IPSET_FLAG_NOMATCH = (1 << IPSET_FLAG_BIT_NOMATCH), IPSET_FLAG_BIT_WITH_COUNTERS = 3, IPSET_FLAG_WITH_COUNTERS = (1 << IPSET_FLAG_BIT_WITH_COUNTERS), - IPSET_FLAG_CADT_MAX = 15, /* Upper half */ + IPSET_FLAG_CADT_MAX = 15, }; /* Commands with settype-specific attributes */ @@ -195,6 +205,7 @@ enum ip_set_dim { * If changed, new revision of iptables match/target is required. */ IPSET_DIM_MAX = 6, + /* Backward compatibility: set match revision 2 */ IPSET_BIT_RETURN_NOMATCH = 7, }; @@ -207,6 +218,18 @@ enum ip_set_kopt { IPSET_RETURN_NOMATCH = (1 << IPSET_BIT_RETURN_NOMATCH), }; +enum { + IPSET_COUNTER_NONE = 0, + IPSET_COUNTER_EQ, + IPSET_COUNTER_NE, + IPSET_COUNTER_LT, + IPSET_COUNTER_GT, +}; + +struct ip_set_counter_match { + __u8 op; + __u64 value; +}; /* Interface to iptables/ip6tables */ diff --git a/include/uapi/linux/netfilter/xt_set.h b/include/uapi/linux/netfilter/xt_set.h index e3a9978..964d3d4 100644 --- a/include/uapi/linux/netfilter/xt_set.h +++ b/include/uapi/linux/netfilter/xt_set.h @@ -62,4 +62,13 @@ struct xt_set_info_target_v2 { __u32 timeout; }; +/* Revision 3 match */ + +struct xt_set_info_match_v3 { + struct xt_set_info match_set; + struct ip_set_counter_match packets; + struct ip_set_counter_match bytes; + __u32 flags; +}; + #endif /*_XT_SET_H*/ diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c index f6d878a..f771390 100644 --- a/net/netfilter/ipset/ip_set_core.c +++ b/net/netfilter/ipset/ip_set_core.c @@ -413,7 +413,7 @@ ip_set_test(ip_set_id_t index, const struct sk_buff *skb, ret = 1; } else { /* --return-nomatch: invert matched element */ - if ((opt->flags & IPSET_RETURN_NOMATCH) && + if ((opt->cmdflags & IPSET_FLAG_RETURN_NOMATCH) && (set->type->features & IPSET_TYPE_NOMATCH) && (ret > 0 || ret == -ENOTEMPTY)) ret = -ret; diff --git a/net/netfilter/ipset/ip_set_list_set.c b/net/netfilter/ipset/ip_set_list_set.c index c09022e..979b8c9 100644 --- a/net/netfilter/ipset/ip_set_list_set.c +++ b/net/netfilter/ipset/ip_set_list_set.c @@ -84,9 +84,13 @@ list_set_ktest(struct ip_set *set, const struct sk_buff *skb, { struct list_set *map = set->data; struct set_elem *e; - u32 i; + u32 i, cmdflags = opt->cmdflags; int ret; + /* Don't lookup sub-counters at all */ + opt->cmdflags &= ~IPSET_FLAG_MATCH_COUNTERS; + if (opt->cmdflags & IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE) + opt->cmdflags &= ~IPSET_FLAG_SKIP_COUNTER_UPDATE; for (i = 0; i < map->size; i++) { e = list_set_elem(map, i); if (e->id == IPSET_INVALID_ID) @@ -99,7 +103,7 @@ list_set_ktest(struct ip_set *set, const struct sk_buff *skb, if (SET_WITH_COUNTER(set)) ip_set_update_counter(ext_counter(e, map), ext, &opt->ext, - opt->cmdflags); + cmdflags); return ret; } } diff --git a/net/netfilter/xt_set.c b/net/netfilter/xt_set.c index 636c519..31790e7 100644 --- a/net/netfilter/xt_set.c +++ b/net/netfilter/xt_set.c @@ -189,6 +189,9 @@ set_match_v1(const struct sk_buff *skb, struct xt_action_param *par) ADT_OPT(opt, par->family, info->match_set.dim, info->match_set.flags, 0, UINT_MAX); + if (opt.flags & IPSET_RETURN_NOMATCH) + opt.cmdflags |= IPSET_FLAG_RETURN_NOMATCH; + return match_set(info->match_set.index, skb, par, &opt, info->match_set.flags & IPSET_INV_MATCH); } @@ -317,6 +320,52 @@ set_target_v2(struct sk_buff *skb, const struct xt_action_param *par) #define set_target_v2_checkentry set_target_v1_checkentry #define set_target_v2_destroy set_target_v1_destroy +/* Revision 3 match */ + +static bool +match_counter(u64 counter, const struct ip_set_counter_match *info) +{ + switch (info->op) { + case IPSET_COUNTER_NONE: + return true; + case IPSET_COUNTER_EQ: + return counter == info->value; + case IPSET_COUNTER_NE: + return counter != info->value; + case IPSET_COUNTER_LT: + return counter < info->value; + case IPSET_COUNTER_GT: + return counter > info->value; + } + return false; +} + +static bool +set_match_v3(const struct sk_buff *skb, struct xt_action_param *par) +{ + const struct xt_set_info_match_v3 *info = par->matchinfo; + ADT_OPT(opt, par->family, info->match_set.dim, + info->match_set.flags, info->flags, UINT_MAX); + int ret; + + if (info->packets.op != IPSET_COUNTER_NONE || + info->bytes.op != IPSET_COUNTER_NONE) + opt.cmdflags |= IPSET_FLAG_MATCH_COUNTERS; + + ret = match_set(info->match_set.index, skb, par, &opt, + info->match_set.flags & IPSET_INV_MATCH); + + if (!(ret && opt.cmdflags & IPSET_FLAG_MATCH_COUNTERS)) + return ret; + + if (!match_counter(opt.ext.packets, &info->packets)) + return 0; + return match_counter(opt.ext.bytes, &info->bytes); +} + +#define set_match_v3_checkentry set_match_v1_checkentry +#define set_match_v3_destroy set_match_v1_destroy + static struct xt_match set_matches[] __read_mostly = { { .name = "set", @@ -369,6 +418,27 @@ static struct xt_match set_matches[] __read_mostly = { .destroy = set_match_v1_destroy, .me = THIS_MODULE }, + /* counters support: update, match */ + { + .name = "set", + .family = NFPROTO_IPV4, + .revision = 3, + .match = set_match_v3, + .matchsize = sizeof(struct xt_set_info_match_v3), + .checkentry = set_match_v3_checkentry, + .destroy = set_match_v3_destroy, + .me = THIS_MODULE + }, + { + .name = "set", + .family = NFPROTO_IPV6, + .revision = 3, + .match = set_match_v3, + .matchsize = sizeof(struct xt_set_info_match_v3), + .checkentry = set_match_v3_checkentry, + .destroy = set_match_v3_destroy, + .me = THIS_MODULE + }, }; static struct xt_target set_targets[] __read_mostly = { |