| /* |
| * net/sched/cls_flower.c Flower classifier |
| * |
| * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us> |
| * |
| * 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 <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/rhashtable.h> |
| #include <linux/workqueue.h> |
| |
| #include <linux/if_ether.h> |
| #include <linux/in6.h> |
| #include <linux/ip.h> |
| |
| #include <net/sch_generic.h> |
| #include <net/pkt_cls.h> |
| #include <net/ip.h> |
| #include <net/flow_dissector.h> |
| |
| #include <net/dst.h> |
| #include <net/dst_metadata.h> |
| |
| 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_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; |
| } __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 rcu_head rcu; |
| }; |
| |
| struct cls_fl_head { |
| struct rhashtable ht; |
| struct fl_flow_mask mask; |
| struct flow_dissector dissector; |
| u32 hgen; |
| bool mask_assigned; |
| struct list_head filters; |
| struct rhashtable_params ht_params; |
| union { |
| struct work_struct work; |
| struct rcu_head rcu; |
| }; |
| }; |
| |
| struct cls_fl_filter { |
| 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_head rcu; |
| struct tc_to_netdev tc; |
| struct net_device *hw_dev; |
| }; |
| |
| 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 = size - 1; |
| |
| for (i = 0; i < sizeof(mask->key); i++) { |
| if (bytes[i]) { |
| if (!first && i) |
| first = i; |
| last = i; |
| } |
| } |
| 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 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_key skb_key; |
| struct fl_flow_key skb_mkey; |
| struct ip_tunnel_info *info; |
| |
| if (!atomic_read(&head->ht.nelems)) |
| return -1; |
| |
| fl_clear_masked_range(&skb_key, &head->mask); |
| |
| info = skb_tunnel_info(skb); |
| if (info) { |
| struct ip_tunnel_key *key = &info->key; |
| |
| switch (ip_tunnel_info_af(info)) { |
| case AF_INET: |
| skb_key.enc_ipv4.src = key->u.ipv4.src; |
| skb_key.enc_ipv4.dst = key->u.ipv4.dst; |
| break; |
| case AF_INET6: |
| skb_key.enc_ipv6.src = key->u.ipv6.src; |
| skb_key.enc_ipv6.dst = key->u.ipv6.dst; |
| break; |
| } |
| |
| skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id); |
| skb_key.enc_tp.src = key->tp_src; |
| skb_key.enc_tp.dst = key->tp_dst; |
| } |
| |
| 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(skb, &head->dissector, &skb_key, 0); |
| |
| fl_set_masked_key(&skb_mkey, &skb_key, &head->mask); |
| |
| f = rhashtable_lookup_fast(&head->ht, |
| fl_key_get_start(&skb_mkey, &head->mask), |
| head->ht_params); |
| 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->filters); |
| rcu_assign_pointer(tp->root, head); |
| |
| return 0; |
| } |
| |
| static void fl_destroy_filter(struct rcu_head *head) |
| { |
| struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu); |
| |
| tcf_exts_destroy(&f->exts); |
| kfree(f); |
| } |
| |
| static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f) |
| { |
| struct tc_cls_flower_offload offload = {0}; |
| struct net_device *dev = f->hw_dev; |
| struct tc_to_netdev *tc = &f->tc; |
| |
| if (!tc_can_offload(dev, tp)) |
| return; |
| |
| offload.command = TC_CLSFLOWER_DESTROY; |
| offload.cookie = (unsigned long)f; |
| |
| tc->type = TC_SETUP_CLSFLOWER; |
| tc->cls_flower = &offload; |
| |
| dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc); |
| } |
| |
| static int fl_hw_replace_filter(struct tcf_proto *tp, |
| struct flow_dissector *dissector, |
| struct fl_flow_key *mask, |
| struct cls_fl_filter *f) |
| { |
| struct net_device *dev = tp->q->dev_queue->dev; |
| struct tc_cls_flower_offload offload = {0}; |
| struct tc_to_netdev *tc = &f->tc; |
| int err; |
| |
| if (!tc_can_offload(dev, tp)) { |
| if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) || |
| (f->hw_dev && !tc_can_offload(f->hw_dev, tp))) { |
| f->hw_dev = dev; |
| return tc_skip_sw(f->flags) ? -EINVAL : 0; |
| } |
| dev = f->hw_dev; |
| tc->egress_dev = true; |
| } else { |
| f->hw_dev = dev; |
| } |
| |
| offload.command = TC_CLSFLOWER_REPLACE; |
| offload.cookie = (unsigned long)f; |
| offload.dissector = dissector; |
| offload.mask = mask; |
| offload.key = &f->mkey; |
| offload.exts = &f->exts; |
| |
| tc->type = TC_SETUP_CLSFLOWER; |
| tc->cls_flower = &offload; |
| |
| err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, |
| tc); |
| |
| if (tc_skip_sw(f->flags)) |
| return err; |
| return 0; |
| } |
| |
| static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f) |
| { |
| struct tc_cls_flower_offload offload = {0}; |
| struct net_device *dev = f->hw_dev; |
| struct tc_to_netdev *tc = &f->tc; |
| |
| if (!tc_can_offload(dev, tp)) |
| return; |
| |
| offload.command = TC_CLSFLOWER_STATS; |
| offload.cookie = (unsigned long)f; |
| offload.exts = &f->exts; |
| |
| tc->type = TC_SETUP_CLSFLOWER; |
| tc->cls_flower = &offload; |
| |
| dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc); |
| } |
| |
| static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f) |
| { |
| list_del_rcu(&f->list); |
| if (!tc_skip_hw(f->flags)) |
| fl_hw_destroy_filter(tp, f); |
| tcf_unbind_filter(tp, &f->res); |
| call_rcu(&f->rcu, fl_destroy_filter); |
| } |
| |
| static void fl_destroy_sleepable(struct work_struct *work) |
| { |
| struct cls_fl_head *head = container_of(work, struct cls_fl_head, |
| work); |
| if (head->mask_assigned) |
| rhashtable_destroy(&head->ht); |
| kfree(head); |
| module_put(THIS_MODULE); |
| } |
| |
| static void fl_destroy_rcu(struct rcu_head *rcu) |
| { |
| struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu); |
| |
| INIT_WORK(&head->work, fl_destroy_sleepable); |
| schedule_work(&head->work); |
| } |
| |
| static bool fl_destroy(struct tcf_proto *tp, bool force) |
| { |
| struct cls_fl_head *head = rtnl_dereference(tp->root); |
| struct cls_fl_filter *f, *next; |
| |
| if (!force && !list_empty(&head->filters)) |
| return false; |
| |
| list_for_each_entry_safe(f, next, &head->filters, list) |
| __fl_delete(tp, f); |
| |
| __module_get(THIS_MODULE); |
| call_rcu(&head->rcu, fl_destroy_rcu); |
| |
| return true; |
| } |
| |
| static unsigned long fl_get(struct tcf_proto *tp, u32 handle) |
| { |
| struct cls_fl_head *head = rtnl_dereference(tp->root); |
| struct cls_fl_filter *f; |
| |
| list_for_each_entry(f, &head->filters, list) |
| if (f->handle == handle) |
| return (unsigned long) f; |
| return 0; |
| } |
| |
| 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 }, |
| }; |
| |
| 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 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); |
| |
| return 0; |
| } |
| |
| static int fl_set_key(struct net *net, struct nlattr **tb, |
| struct fl_flow_key *key, struct fl_flow_key *mask) |
| { |
| __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]); |
| 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)); |
| } |
| |
| 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)); |
| } 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_ICMPV4_CODE, |
| &mask->icmp.code, |
| TCA_FLOWER_KEY_ICMPV4_CODE_MASK, |
| sizeof(key->icmp.code)); |
| } |
| |
| 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 bool fl_mask_eq(struct fl_flow_mask *mask1, |
| struct fl_flow_mask *mask2) |
| { |
| const long *lmask1 = fl_key_get_start(&mask1->key, mask1); |
| const long *lmask2 = fl_key_get_start(&mask2->key, mask2); |
| |
| return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) && |
| !memcmp(lmask1, lmask2, fl_mask_range(mask1)); |
| } |
| |
| 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_hashtable(struct cls_fl_head *head, |
| struct fl_flow_mask *mask) |
| { |
| head->ht_params = fl_ht_params; |
| head->ht_params.key_len = fl_mask_range(mask); |
| head->ht_params.key_offset += mask->range.start; |
| |
| return rhashtable_init(&head->ht, &head->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 cls_fl_head *head, |
| 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_ICMP, icmp); |
| 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(&head->dissector, keys, cnt); |
| } |
| |
| static int fl_check_assign_mask(struct cls_fl_head *head, |
| struct fl_flow_mask *mask) |
| { |
| int err; |
| |
| if (head->mask_assigned) { |
| if (!fl_mask_eq(&head->mask, mask)) |
| return -EINVAL; |
| else |
| return 0; |
| } |
| |
| /* Mask is not assigned yet. So assign it and init hashtable |
| * according to that. |
| */ |
| err = fl_init_hashtable(head, mask); |
| if (err) |
| return err; |
| memcpy(&head->mask, mask, sizeof(head->mask)); |
| head->mask_assigned = true; |
| |
| fl_init_dissector(head, mask); |
| |
| 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 tcf_exts e; |
| int err; |
| |
| err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0); |
| if (err < 0) |
| return err; |
| err = tcf_exts_validate(net, tp, tb, est, &e, ovr); |
| if (err < 0) |
| goto errout; |
| |
| 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); |
| if (err) |
| goto errout; |
| |
| fl_mask_update_range(mask); |
| fl_set_masked_key(&f->mkey, &f->key, mask); |
| |
| tcf_exts_change(tp, &f->exts, &e); |
| |
| return 0; |
| errout: |
| tcf_exts_destroy(&e); |
| return err; |
| } |
| |
| static u32 fl_grab_new_handle(struct tcf_proto *tp, |
| struct cls_fl_head *head) |
| { |
| unsigned int i = 0x80000000; |
| u32 handle; |
| |
| do { |
| if (++head->hgen == 0x7FFFFFFF) |
| head->hgen = 1; |
| } while (--i > 0 && fl_get(tp, head->hgen)); |
| |
| if (unlikely(i == 0)) { |
| pr_err("Insufficient number of handles\n"); |
| handle = 0; |
| } else { |
| handle = head->hgen; |
| } |
| |
| return handle; |
| } |
| |
| static int fl_change(struct net *net, struct sk_buff *in_skb, |
| struct tcf_proto *tp, unsigned long base, |
| u32 handle, struct nlattr **tca, |
| unsigned long *arg, bool ovr) |
| { |
| struct cls_fl_head *head = rtnl_dereference(tp->root); |
| struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg; |
| struct cls_fl_filter *fnew; |
| struct nlattr *tb[TCA_FLOWER_MAX + 1]; |
| struct fl_flow_mask mask = {}; |
| int err; |
| |
| if (!tca[TCA_OPTIONS]) |
| return -EINVAL; |
| |
| err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy); |
| if (err < 0) |
| return err; |
| |
| if (fold && handle && fold->handle != handle) |
| return -EINVAL; |
| |
| fnew = kzalloc(sizeof(*fnew), GFP_KERNEL); |
| if (!fnew) |
| return -ENOBUFS; |
| |
| err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0); |
| if (err < 0) |
| goto errout; |
| |
| if (!handle) { |
| handle = fl_grab_new_handle(tp, head); |
| if (!handle) { |
| err = -EINVAL; |
| 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; |
| } |
| } |
| |
| err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr); |
| if (err) |
| goto errout; |
| |
| err = fl_check_assign_mask(head, &mask); |
| if (err) |
| goto errout; |
| |
| if (!tc_skip_sw(fnew->flags)) { |
| err = rhashtable_insert_fast(&head->ht, &fnew->ht_node, |
| head->ht_params); |
| if (err) |
| goto errout; |
| } |
| |
| if (!tc_skip_hw(fnew->flags)) { |
| err = fl_hw_replace_filter(tp, |
| &head->dissector, |
| &mask.key, |
| fnew); |
| if (err) |
| goto errout; |
| } |
| |
| if (fold) { |
| if (!tc_skip_sw(fold->flags)) |
| rhashtable_remove_fast(&head->ht, &fold->ht_node, |
| head->ht_params); |
| if (!tc_skip_hw(fold->flags)) |
| fl_hw_destroy_filter(tp, fold); |
| } |
| |
| *arg = (unsigned long) fnew; |
| |
| if (fold) { |
| list_replace_rcu(&fold->list, &fnew->list); |
| tcf_unbind_filter(tp, &fold->res); |
| call_rcu(&fold->rcu, fl_destroy_filter); |
| } else { |
| list_add_tail_rcu(&fnew->list, &head->filters); |
| } |
| |
| return 0; |
| |
| errout: |
| tcf_exts_destroy(&fnew->exts); |
| kfree(fnew); |
| return err; |
| } |
| |
| static int fl_delete(struct tcf_proto *tp, unsigned long arg) |
| { |
| struct cls_fl_head *head = rtnl_dereference(tp->root); |
| struct cls_fl_filter *f = (struct cls_fl_filter *) arg; |
| |
| if (!tc_skip_sw(f->flags)) |
| rhashtable_remove_fast(&head->ht, &f->ht_node, |
| head->ht_params); |
| __fl_delete(tp, f); |
| 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; |
| |
| list_for_each_entry_rcu(f, &head->filters, list) { |
| if (arg->count < arg->skip) |
| goto skip; |
| if (arg->fn(tp, (unsigned long) 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_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); |
| |
| _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, unsigned long fh, |
| struct sk_buff *skb, struct tcmsg *t) |
| { |
| struct cls_fl_head *head = rtnl_dereference(tp->root); |
| struct cls_fl_filter *f = (struct cls_fl_filter *) 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 = &head->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_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))) |
| 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)))) |
| 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; |
| |
| 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; |
| |
| nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags); |
| |
| 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 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, |
| .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 <jiri@resnulli.us>"); |
| MODULE_DESCRIPTION("Flower classifier"); |
| MODULE_LICENSE("GPL v2"); |