/* * net/sched/cls_flower.c Flower classifier * * Copyright (c) 2015 Jiri Pirko * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct fl_flow_key { int indev_ifindex; struct flow_dissector_key_control control; struct flow_dissector_key_control enc_control; struct flow_dissector_key_basic basic; struct flow_dissector_key_eth_addrs eth; struct flow_dissector_key_vlan vlan; union { struct flow_dissector_key_ipv4_addrs ipv4; struct flow_dissector_key_ipv6_addrs ipv6; }; struct flow_dissector_key_ports tp; struct flow_dissector_key_icmp icmp; struct flow_dissector_key_arp arp; struct flow_dissector_key_keyid enc_key_id; union { struct flow_dissector_key_ipv4_addrs enc_ipv4; struct flow_dissector_key_ipv6_addrs enc_ipv6; }; struct flow_dissector_key_ports enc_tp; struct flow_dissector_key_mpls mpls; struct flow_dissector_key_tcp tcp; struct flow_dissector_key_ip ip; } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ struct fl_flow_mask_range { unsigned short int start; unsigned short int end; }; struct fl_flow_mask { struct fl_flow_key key; struct fl_flow_mask_range range; struct rhash_head ht_node; struct rhashtable ht; struct rhashtable_params filter_ht_params; struct flow_dissector dissector; struct list_head filters; struct rcu_head rcu; struct list_head list; }; struct cls_fl_head { struct rhashtable ht; struct list_head masks; struct rcu_work rwork; struct idr handle_idr; }; struct cls_fl_filter { struct fl_flow_mask *mask; struct rhash_head ht_node; struct fl_flow_key mkey; struct tcf_exts exts; struct tcf_result res; struct fl_flow_key key; struct list_head list; u32 handle; u32 flags; struct rcu_work rwork; struct net_device *hw_dev; }; static const struct rhashtable_params mask_ht_params = { .key_offset = offsetof(struct fl_flow_mask, key), .key_len = sizeof(struct fl_flow_key), .head_offset = offsetof(struct fl_flow_mask, ht_node), .automatic_shrinking = true, }; static unsigned short int fl_mask_range(const struct fl_flow_mask *mask) { return mask->range.end - mask->range.start; } static void fl_mask_update_range(struct fl_flow_mask *mask) { const u8 *bytes = (const u8 *) &mask->key; size_t size = sizeof(mask->key); size_t i, first = 0, last; for (i = 0; i < size; i++) { if (bytes[i]) { first = i; break; } } last = first; for (i = size - 1; i != first; i--) { if (bytes[i]) { last = i; break; } } mask->range.start = rounddown(first, sizeof(long)); mask->range.end = roundup(last + 1, sizeof(long)); } static void *fl_key_get_start(struct fl_flow_key *key, const struct fl_flow_mask *mask) { return (u8 *) key + mask->range.start; } static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key, struct fl_flow_mask *mask) { const long *lkey = fl_key_get_start(key, mask); const long *lmask = fl_key_get_start(&mask->key, mask); long *lmkey = fl_key_get_start(mkey, mask); int i; for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) *lmkey++ = *lkey++ & *lmask++; } static void fl_clear_masked_range(struct fl_flow_key *key, struct fl_flow_mask *mask) { memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask)); } static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask, struct fl_flow_key *mkey) { return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask), mask->filter_ht_params); } static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp, struct tcf_result *res) { struct cls_fl_head *head = rcu_dereference_bh(tp->root); struct cls_fl_filter *f; struct fl_flow_mask *mask; struct fl_flow_key skb_key; struct fl_flow_key skb_mkey; list_for_each_entry_rcu(mask, &head->masks, list) { fl_clear_masked_range(&skb_key, mask); skb_key.indev_ifindex = skb->skb_iif; /* skb_flow_dissect() does not set n_proto in case an unknown * protocol, so do it rather here. */ skb_key.basic.n_proto = skb->protocol; skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key); skb_flow_dissect(skb, &mask->dissector, &skb_key, 0); fl_set_masked_key(&skb_mkey, &skb_key, mask); f = fl_lookup(mask, &skb_mkey); if (f && !tc_skip_sw(f->flags)) { *res = f->res; return tcf_exts_exec(skb, &f->exts, res); } } return -1; } static int fl_init(struct tcf_proto *tp) { struct cls_fl_head *head; head = kzalloc(sizeof(*head), GFP_KERNEL); if (!head) return -ENOBUFS; INIT_LIST_HEAD_RCU(&head->masks); rcu_assign_pointer(tp->root, head); idr_init(&head->handle_idr); return rhashtable_init(&head->ht, &mask_ht_params); } static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask, bool async) { if (!list_empty(&mask->filters)) return false; rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params); rhashtable_destroy(&mask->ht); list_del_rcu(&mask->list); if (async) kfree_rcu(mask, rcu); else kfree(mask); return true; } static void __fl_destroy_filter(struct cls_fl_filter *f) { tcf_exts_destroy(&f->exts); tcf_exts_put_net(&f->exts); kfree(f); } static void fl_destroy_filter_work(struct work_struct *work) { struct cls_fl_filter *f = container_of(to_rcu_work(work), struct cls_fl_filter, rwork); rtnl_lock(); __fl_destroy_filter(f); rtnl_unlock(); } static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f, struct netlink_ext_ack *extack) { struct tc_cls_flower_offload cls_flower = {}; struct tcf_block *block = tp->chain->block; tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack); cls_flower.command = TC_CLSFLOWER_DESTROY; cls_flower.cookie = (unsigned long) f; tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER, &cls_flower, false); tcf_block_offload_dec(block, &f->flags); } static int fl_hw_replace_filter(struct tcf_proto *tp, struct cls_fl_filter *f, struct netlink_ext_ack *extack) { struct tc_cls_flower_offload cls_flower = {}; struct tcf_block *block = tp->chain->block; bool skip_sw = tc_skip_sw(f->flags); int err; tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack); cls_flower.command = TC_CLSFLOWER_REPLACE; cls_flower.cookie = (unsigned long) f; cls_flower.dissector = &f->mask->dissector; cls_flower.mask = &f->mask->key; cls_flower.key = &f->mkey; cls_flower.exts = &f->exts; cls_flower.classid = f->res.classid; err = tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER, &cls_flower, skip_sw); if (err < 0) { fl_hw_destroy_filter(tp, f, NULL); return err; } else if (err > 0) { tcf_block_offload_inc(block, &f->flags); } if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW)) return -EINVAL; return 0; } static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f) { struct tc_cls_flower_offload cls_flower = {}; struct tcf_block *block = tp->chain->block; tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL); cls_flower.command = TC_CLSFLOWER_STATS; cls_flower.cookie = (unsigned long) f; cls_flower.exts = &f->exts; cls_flower.classid = f->res.classid; tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER, &cls_flower, false); } static bool __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f, struct netlink_ext_ack *extack) { struct cls_fl_head *head = rtnl_dereference(tp->root); bool async = tcf_exts_get_net(&f->exts); bool last; idr_remove(&head->handle_idr, f->handle); list_del_rcu(&f->list); last = fl_mask_put(head, f->mask, async); if (!tc_skip_hw(f->flags)) fl_hw_destroy_filter(tp, f, extack); tcf_unbind_filter(tp, &f->res); if (async) tcf_queue_work(&f->rwork, fl_destroy_filter_work); else __fl_destroy_filter(f); return last; } static void fl_destroy_sleepable(struct work_struct *work) { struct cls_fl_head *head = container_of(to_rcu_work(work), struct cls_fl_head, rwork); kfree(head); module_put(THIS_MODULE); } static void fl_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack) { struct cls_fl_head *head = rtnl_dereference(tp->root); struct fl_flow_mask *mask, *next_mask; struct cls_fl_filter *f, *next; list_for_each_entry_safe(mask, next_mask, &head->masks, list) { list_for_each_entry_safe(f, next, &mask->filters, list) { if (__fl_delete(tp, f, extack)) break; } } idr_destroy(&head->handle_idr); __module_get(THIS_MODULE); tcf_queue_work(&head->rwork, fl_destroy_sleepable); } static void *fl_get(struct tcf_proto *tp, u32 handle) { struct cls_fl_head *head = rtnl_dereference(tp->root); return idr_find(&head->handle_idr, handle); } static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = { [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC }, [TCA_FLOWER_CLASSID] = { .type = NLA_U32 }, [TCA_FLOWER_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ }, [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN }, [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 }, [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 }, [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 }, [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 }, }; static void fl_set_key_val(struct nlattr **tb, void *val, int val_type, void *mask, int mask_type, int len) { if (!tb[val_type]) return; memcpy(val, nla_data(tb[val_type]), len); if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type]) memset(mask, 0xff, len); else memcpy(mask, nla_data(tb[mask_type]), len); } static int fl_set_key_mpls(struct nlattr **tb, struct flow_dissector_key_mpls *key_val, struct flow_dissector_key_mpls *key_mask) { if (tb[TCA_FLOWER_KEY_MPLS_TTL]) { key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]); key_mask->mpls_ttl = MPLS_TTL_MASK; } if (tb[TCA_FLOWER_KEY_MPLS_BOS]) { u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]); if (bos & ~MPLS_BOS_MASK) return -EINVAL; key_val->mpls_bos = bos; key_mask->mpls_bos = MPLS_BOS_MASK; } if (tb[TCA_FLOWER_KEY_MPLS_TC]) { u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]); if (tc & ~MPLS_TC_MASK) return -EINVAL; key_val->mpls_tc = tc; key_mask->mpls_tc = MPLS_TC_MASK; } if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) { u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]); if (label & ~MPLS_LABEL_MASK) return -EINVAL; key_val->mpls_label = label; key_mask->mpls_label = MPLS_LABEL_MASK; } return 0; } static void fl_set_key_vlan(struct nlattr **tb, struct flow_dissector_key_vlan *key_val, struct flow_dissector_key_vlan *key_mask) { #define VLAN_PRIORITY_MASK 0x7 if (tb[TCA_FLOWER_KEY_VLAN_ID]) { key_val->vlan_id = nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK; key_mask->vlan_id = VLAN_VID_MASK; } if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) { key_val->vlan_priority = nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) & VLAN_PRIORITY_MASK; key_mask->vlan_priority = VLAN_PRIORITY_MASK; } } static void fl_set_key_flag(u32 flower_key, u32 flower_mask, u32 *dissector_key, u32 *dissector_mask, u32 flower_flag_bit, u32 dissector_flag_bit) { if (flower_mask & flower_flag_bit) { *dissector_mask |= dissector_flag_bit; if (flower_key & flower_flag_bit) *dissector_key |= dissector_flag_bit; } } static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key, u32 *flags_mask) { u32 key, mask; /* mask is mandatory for flags */ if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) return -EINVAL; key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS])); mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK])); *flags_key = 0; *flags_mask = 0; fl_set_key_flag(key, mask, flags_key, flags_mask, TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT); fl_set_key_flag(key, mask, flags_key, flags_mask, TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, FLOW_DIS_FIRST_FRAG); return 0; } static void fl_set_key_ip(struct nlattr **tb, struct flow_dissector_key_ip *key, struct flow_dissector_key_ip *mask) { fl_set_key_val(tb, &key->tos, TCA_FLOWER_KEY_IP_TOS, &mask->tos, TCA_FLOWER_KEY_IP_TOS_MASK, sizeof(key->tos)); fl_set_key_val(tb, &key->ttl, TCA_FLOWER_KEY_IP_TTL, &mask->ttl, TCA_FLOWER_KEY_IP_TTL_MASK, sizeof(key->ttl)); } static int fl_set_key(struct net *net, struct nlattr **tb, struct fl_flow_key *key, struct fl_flow_key *mask, struct netlink_ext_ack *extack) { __be16 ethertype; int ret = 0; #ifdef CONFIG_NET_CLS_IND if (tb[TCA_FLOWER_INDEV]) { int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack); if (err < 0) return err; key->indev_ifindex = err; mask->indev_ifindex = 0xffffffff; } #endif fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, sizeof(key->eth.dst)); fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, sizeof(key->eth.src)); if (tb[TCA_FLOWER_KEY_ETH_TYPE]) { ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]); if (ethertype == htons(ETH_P_8021Q)) { fl_set_key_vlan(tb, &key->vlan, &mask->vlan); fl_set_key_val(tb, &key->basic.n_proto, TCA_FLOWER_KEY_VLAN_ETH_TYPE, &mask->basic.n_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.n_proto)); } else { key->basic.n_proto = ethertype; mask->basic.n_proto = cpu_to_be16(~0); } } if (key->basic.n_proto == htons(ETH_P_IP) || key->basic.n_proto == htons(ETH_P_IPV6)) { fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.ip_proto)); fl_set_key_ip(tb, &key->ip, &mask->ip); } if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) { key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; mask->control.addr_type = ~0; fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, sizeof(key->ipv4.src)); fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, sizeof(key->ipv4.dst)); } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) { key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; mask->control.addr_type = ~0; fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, sizeof(key->ipv6.src)); fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, sizeof(key->ipv6.dst)); } if (key->basic.ip_proto == IPPROTO_TCP) { fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, sizeof(key->tp.src)); fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, sizeof(key->tp.dst)); fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS, &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK, sizeof(key->tcp.flags)); } else if (key->basic.ip_proto == IPPROTO_UDP) { fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, sizeof(key->tp.src)); fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, sizeof(key->tp.dst)); } else if (key->basic.ip_proto == IPPROTO_SCTP) { fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC, &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK, sizeof(key->tp.src)); fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST, &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK, sizeof(key->tp.dst)); } else if (key->basic.n_proto == htons(ETH_P_IP) && key->basic.ip_proto == IPPROTO_ICMP) { fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE_MASK, sizeof(key->icmp.type)); fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE_MASK, sizeof(key->icmp.code)); } else if (key->basic.n_proto == htons(ETH_P_IPV6) && key->basic.ip_proto == IPPROTO_ICMPV6) { fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE_MASK, sizeof(key->icmp.type)); fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE_MASK, sizeof(key->icmp.code)); } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) || key->basic.n_proto == htons(ETH_P_MPLS_MC)) { ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls); if (ret) return ret; } else if (key->basic.n_proto == htons(ETH_P_ARP) || key->basic.n_proto == htons(ETH_P_RARP)) { fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK, sizeof(key->arp.sip)); fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK, sizeof(key->arp.tip)); fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP, &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK, sizeof(key->arp.op)); fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA, mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK, sizeof(key->arp.sha)); fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA, mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK, sizeof(key->arp.tha)); } if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] || tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) { key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; mask->enc_control.addr_type = ~0; fl_set_key_val(tb, &key->enc_ipv4.src, TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src, TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, sizeof(key->enc_ipv4.src)); fl_set_key_val(tb, &key->enc_ipv4.dst, TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst, TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, sizeof(key->enc_ipv4.dst)); } if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] || tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) { key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; mask->enc_control.addr_type = ~0; fl_set_key_val(tb, &key->enc_ipv6.src, TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src, TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, sizeof(key->enc_ipv6.src)); fl_set_key_val(tb, &key->enc_ipv6.dst, TCA_FLOWER_KEY_ENC_IPV6_DST, &mask->enc_ipv6.dst, TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, sizeof(key->enc_ipv6.dst)); } fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID, &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC, sizeof(key->enc_key_id.keyid)); fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK, sizeof(key->enc_tp.src)); fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK, sizeof(key->enc_tp.dst)); if (tb[TCA_FLOWER_KEY_FLAGS]) ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags); return ret; } static void fl_mask_copy(struct fl_flow_mask *dst, struct fl_flow_mask *src) { const void *psrc = fl_key_get_start(&src->key, src); void *pdst = fl_key_get_start(&dst->key, src); memcpy(pdst, psrc, fl_mask_range(src)); dst->range = src->range; } static const struct rhashtable_params fl_ht_params = { .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */ .head_offset = offsetof(struct cls_fl_filter, ht_node), .automatic_shrinking = true, }; static int fl_init_mask_hashtable(struct fl_flow_mask *mask) { mask->filter_ht_params = fl_ht_params; mask->filter_ht_params.key_len = fl_mask_range(mask); mask->filter_ht_params.key_offset += mask->range.start; return rhashtable_init(&mask->ht, &mask->filter_ht_params); } #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member) #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member)) #define FL_KEY_IS_MASKED(mask, member) \ memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \ 0, FL_KEY_MEMBER_SIZE(member)) \ #define FL_KEY_SET(keys, cnt, id, member) \ do { \ keys[cnt].key_id = id; \ keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \ cnt++; \ } while(0); #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \ do { \ if (FL_KEY_IS_MASKED(mask, member)) \ FL_KEY_SET(keys, cnt, id, member); \ } while(0); static void fl_init_dissector(struct fl_flow_mask *mask) { struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX]; size_t cnt = 0; FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control); FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ETH_ADDRS, eth); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_IP, ip); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_TCP, tcp); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ICMP, icmp); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ARP, arp); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_MPLS, mpls); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_VLAN, vlan); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6); if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) || FL_KEY_IS_MASKED(&mask->key, enc_ipv6)) FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL, enc_control); FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp); skb_flow_dissector_init(&mask->dissector, keys, cnt); } static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head, struct fl_flow_mask *mask) { struct fl_flow_mask *newmask; int err; newmask = kzalloc(sizeof(*newmask), GFP_KERNEL); if (!newmask) return ERR_PTR(-ENOMEM); fl_mask_copy(newmask, mask); err = fl_init_mask_hashtable(newmask); if (err) goto errout_free; fl_init_dissector(newmask); INIT_LIST_HEAD_RCU(&newmask->filters); err = rhashtable_insert_fast(&head->ht, &newmask->ht_node, mask_ht_params); if (err) goto errout_destroy; list_add_tail_rcu(&newmask->list, &head->masks); return newmask; errout_destroy: rhashtable_destroy(&newmask->ht); errout_free: kfree(newmask); return ERR_PTR(err); } static int fl_check_assign_mask(struct cls_fl_head *head, struct cls_fl_filter *fnew, struct cls_fl_filter *fold, struct fl_flow_mask *mask) { struct fl_flow_mask *newmask; fnew->mask = rhashtable_lookup_fast(&head->ht, mask, mask_ht_params); if (!fnew->mask) { if (fold) return -EINVAL; newmask = fl_create_new_mask(head, mask); if (IS_ERR(newmask)) return PTR_ERR(newmask); fnew->mask = newmask; } else if (fold && fold->mask == fnew->mask) { return -EINVAL; } return 0; } static int fl_set_parms(struct net *net, struct tcf_proto *tp, struct cls_fl_filter *f, struct fl_flow_mask *mask, unsigned long base, struct nlattr **tb, struct nlattr *est, bool ovr, struct netlink_ext_ack *extack) { int err; err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, extack); if (err < 0) return err; if (tb[TCA_FLOWER_CLASSID]) { f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]); tcf_bind_filter(tp, &f->res, base); } err = fl_set_key(net, tb, &f->key, &mask->key, extack); if (err) return err; fl_mask_update_range(mask); fl_set_masked_key(&f->mkey, &f->key, mask); return 0; } static int fl_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, void **arg, bool ovr, struct netlink_ext_ack *extack) { struct cls_fl_head *head = rtnl_dereference(tp->root); struct cls_fl_filter *fold = *arg; struct cls_fl_filter *fnew; struct nlattr **tb; struct fl_flow_mask mask = {}; int err; if (!tca[TCA_OPTIONS]) return -EINVAL; tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL); if (!tb) return -ENOBUFS; err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy, NULL); if (err < 0) goto errout_tb; if (fold && handle && fold->handle != handle) { err = -EINVAL; goto errout_tb; } fnew = kzalloc(sizeof(*fnew), GFP_KERNEL); if (!fnew) { err = -ENOBUFS; goto errout_tb; } err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0); if (err < 0) goto errout; if (!handle) { handle = 1; err = idr_alloc_u32(&head->handle_idr, fnew, &handle, INT_MAX, GFP_KERNEL); } else if (!fold) { /* user specifies a handle and it doesn't exist */ err = idr_alloc_u32(&head->handle_idr, fnew, &handle, handle, GFP_KERNEL); } if (err) goto errout; fnew->handle = handle; if (tb[TCA_FLOWER_FLAGS]) { fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]); if (!tc_flags_valid(fnew->flags)) { err = -EINVAL; goto errout_idr; } } err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr, extack); if (err) goto errout_idr; err = fl_check_assign_mask(head, fnew, fold, &mask); if (err) goto errout_idr; if (!tc_skip_sw(fnew->flags)) { if (!fold && fl_lookup(fnew->mask, &fnew->mkey)) { err = -EEXIST; goto errout_mask; } err = rhashtable_insert_fast(&fnew->mask->ht, &fnew->ht_node, fnew->mask->filter_ht_params); if (err) goto errout_mask; } if (!tc_skip_hw(fnew->flags)) { err = fl_hw_replace_filter(tp, fnew, extack); if (err) goto errout_mask; } if (!tc_in_hw(fnew->flags)) fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW; if (fold) { if (!tc_skip_sw(fold->flags)) rhashtable_remove_fast(&fold->mask->ht, &fold->ht_node, fold->mask->filter_ht_params); if (!tc_skip_hw(fold->flags)) fl_hw_destroy_filter(tp, fold, NULL); } *arg = fnew; if (fold) { idr_replace(&head->handle_idr, fnew, fnew->handle); list_replace_rcu(&fold->list, &fnew->list); tcf_unbind_filter(tp, &fold->res); tcf_exts_get_net(&fold->exts); tcf_queue_work(&fold->rwork, fl_destroy_filter_work); } else { list_add_tail_rcu(&fnew->list, &fnew->mask->filters); } kfree(tb); return 0; errout_mask: fl_mask_put(head, fnew->mask, false); errout_idr: if (fnew->handle) idr_remove(&head->handle_idr, fnew->handle); errout: tcf_exts_destroy(&fnew->exts); kfree(fnew); errout_tb: kfree(tb); return err; } static int fl_delete(struct tcf_proto *tp, void *arg, bool *last, struct netlink_ext_ack *extack) { struct cls_fl_head *head = rtnl_dereference(tp->root); struct cls_fl_filter *f = arg; if (!tc_skip_sw(f->flags)) rhashtable_remove_fast(&f->mask->ht, &f->ht_node, f->mask->filter_ht_params); __fl_delete(tp, f, extack); *last = list_empty(&head->masks); return 0; } static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg) { struct cls_fl_head *head = rtnl_dereference(tp->root); struct cls_fl_filter *f; struct fl_flow_mask *mask; list_for_each_entry_rcu(mask, &head->masks, list) { list_for_each_entry_rcu(f, &mask->filters, list) { if (arg->count < arg->skip) goto skip; if (arg->fn(tp, f, arg) < 0) { arg->stop = 1; break; } skip: arg->count++; } } } static int fl_dump_key_val(struct sk_buff *skb, void *val, int val_type, void *mask, int mask_type, int len) { int err; if (!memchr_inv(mask, 0, len)) return 0; err = nla_put(skb, val_type, len, val); if (err) return err; if (mask_type != TCA_FLOWER_UNSPEC) { err = nla_put(skb, mask_type, len, mask); if (err) return err; } return 0; } static int fl_dump_key_mpls(struct sk_buff *skb, struct flow_dissector_key_mpls *mpls_key, struct flow_dissector_key_mpls *mpls_mask) { int err; if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask))) return 0; if (mpls_mask->mpls_ttl) { err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL, mpls_key->mpls_ttl); if (err) return err; } if (mpls_mask->mpls_tc) { err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC, mpls_key->mpls_tc); if (err) return err; } if (mpls_mask->mpls_label) { err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL, mpls_key->mpls_label); if (err) return err; } if (mpls_mask->mpls_bos) { err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS, mpls_key->mpls_bos); if (err) return err; } return 0; } static int fl_dump_key_ip(struct sk_buff *skb, struct flow_dissector_key_ip *key, struct flow_dissector_key_ip *mask) { if (fl_dump_key_val(skb, &key->tos, TCA_FLOWER_KEY_IP_TOS, &mask->tos, TCA_FLOWER_KEY_IP_TOS_MASK, sizeof(key->tos)) || fl_dump_key_val(skb, &key->ttl, TCA_FLOWER_KEY_IP_TTL, &mask->ttl, TCA_FLOWER_KEY_IP_TTL_MASK, sizeof(key->ttl))) return -1; return 0; } static int fl_dump_key_vlan(struct sk_buff *skb, struct flow_dissector_key_vlan *vlan_key, struct flow_dissector_key_vlan *vlan_mask) { int err; if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask))) return 0; if (vlan_mask->vlan_id) { err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID, vlan_key->vlan_id); if (err) return err; } if (vlan_mask->vlan_priority) { err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO, vlan_key->vlan_priority); if (err) return err; } return 0; } static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask, u32 *flower_key, u32 *flower_mask, u32 flower_flag_bit, u32 dissector_flag_bit) { if (dissector_mask & dissector_flag_bit) { *flower_mask |= flower_flag_bit; if (dissector_key & dissector_flag_bit) *flower_key |= flower_flag_bit; } } static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask) { u32 key, mask; __be32 _key, _mask; int err; if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask))) return 0; key = 0; mask = 0; fl_get_key_flag(flags_key, flags_mask, &key, &mask, TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT); fl_get_key_flag(flags_key, flags_mask, &key, &mask, TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, FLOW_DIS_FIRST_FRAG); _key = cpu_to_be32(key); _mask = cpu_to_be32(mask); err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key); if (err) return err; return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask); } static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh, struct sk_buff *skb, struct tcmsg *t) { struct cls_fl_filter *f = fh; struct nlattr *nest; struct fl_flow_key *key, *mask; if (!f) return skb->len; t->tcm_handle = f->handle; nest = nla_nest_start(skb, TCA_OPTIONS); if (!nest) goto nla_put_failure; if (f->res.classid && nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid)) goto nla_put_failure; key = &f->key; mask = &f->mask->key; if (mask->indev_ifindex) { struct net_device *dev; dev = __dev_get_by_index(net, key->indev_ifindex); if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name)) goto nla_put_failure; } if (!tc_skip_hw(f->flags)) fl_hw_update_stats(tp, f); if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, sizeof(key->eth.dst)) || fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, sizeof(key->eth.src)) || fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE, &mask->basic.n_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.n_proto))) goto nla_put_failure; if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls)) goto nla_put_failure; if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan)) goto nla_put_failure; if ((key->basic.n_proto == htons(ETH_P_IP) || key->basic.n_proto == htons(ETH_P_IPV6)) && (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.ip_proto)) || fl_dump_key_ip(skb, &key->ip, &mask->ip))) goto nla_put_failure; if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, sizeof(key->ipv4.src)) || fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, sizeof(key->ipv4.dst)))) goto nla_put_failure; else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, sizeof(key->ipv6.src)) || fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, sizeof(key->ipv6.dst)))) goto nla_put_failure; if (key->basic.ip_proto == IPPROTO_TCP && (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, sizeof(key->tp.src)) || fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, sizeof(key->tp.dst)) || fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS, &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK, sizeof(key->tcp.flags)))) goto nla_put_failure; else if (key->basic.ip_proto == IPPROTO_UDP && (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, sizeof(key->tp.src)) || fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, sizeof(key->tp.dst)))) goto nla_put_failure; else if (key->basic.ip_proto == IPPROTO_SCTP && (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC, &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK, sizeof(key->tp.src)) || fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST, &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK, sizeof(key->tp.dst)))) goto nla_put_failure; else if (key->basic.n_proto == htons(ETH_P_IP) && key->basic.ip_proto == IPPROTO_ICMP && (fl_dump_key_val(skb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE_MASK, sizeof(key->icmp.type)) || fl_dump_key_val(skb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE_MASK, sizeof(key->icmp.code)))) goto nla_put_failure; else if (key->basic.n_proto == htons(ETH_P_IPV6) && key->basic.ip_proto == IPPROTO_ICMPV6 && (fl_dump_key_val(skb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE_MASK, sizeof(key->icmp.type)) || fl_dump_key_val(skb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE_MASK, sizeof(key->icmp.code)))) goto nla_put_failure; else if ((key->basic.n_proto == htons(ETH_P_ARP) || key->basic.n_proto == htons(ETH_P_RARP)) && (fl_dump_key_val(skb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK, sizeof(key->arp.sip)) || fl_dump_key_val(skb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK, sizeof(key->arp.tip)) || fl_dump_key_val(skb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP, &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK, sizeof(key->arp.op)) || fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA, mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK, sizeof(key->arp.sha)) || fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA, mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK, sizeof(key->arp.tha)))) goto nla_put_failure; if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && (fl_dump_key_val(skb, &key->enc_ipv4.src, TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src, TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, sizeof(key->enc_ipv4.src)) || fl_dump_key_val(skb, &key->enc_ipv4.dst, TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst, TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, sizeof(key->enc_ipv4.dst)))) goto nla_put_failure; else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && (fl_dump_key_val(skb, &key->enc_ipv6.src, TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src, TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, sizeof(key->enc_ipv6.src)) || fl_dump_key_val(skb, &key->enc_ipv6.dst, TCA_FLOWER_KEY_ENC_IPV6_DST, &mask->enc_ipv6.dst, TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, sizeof(key->enc_ipv6.dst)))) goto nla_put_failure; if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID, &mask->enc_key_id, TCA_FLOWER_UNSPEC, sizeof(key->enc_key_id)) || fl_dump_key_val(skb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK, sizeof(key->enc_tp.src)) || fl_dump_key_val(skb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK, sizeof(key->enc_tp.dst))) goto nla_put_failure; if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags)) goto nla_put_failure; if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags)) goto nla_put_failure; if (tcf_exts_dump(skb, &f->exts)) goto nla_put_failure; nla_nest_end(skb, nest); if (tcf_exts_dump_stats(skb, &f->exts) < 0) goto nla_put_failure; return skb->len; nla_put_failure: nla_nest_cancel(skb, nest); return -1; } static void fl_bind_class(void *fh, u32 classid, unsigned long cl) { struct cls_fl_filter *f = fh; if (f && f->res.classid == classid) f->res.class = cl; } static struct tcf_proto_ops cls_fl_ops __read_mostly = { .kind = "flower", .classify = fl_classify, .init = fl_init, .destroy = fl_destroy, .get = fl_get, .change = fl_change, .delete = fl_delete, .walk = fl_walk, .dump = fl_dump, .bind_class = fl_bind_class, .owner = THIS_MODULE, }; static int __init cls_fl_init(void) { return register_tcf_proto_ops(&cls_fl_ops); } static void __exit cls_fl_exit(void) { unregister_tcf_proto_ops(&cls_fl_ops); } module_init(cls_fl_init); module_exit(cls_fl_exit); MODULE_AUTHOR("Jiri Pirko "); MODULE_DESCRIPTION("Flower classifier"); MODULE_LICENSE("GPL v2");