v4.19.13 snapshot.
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
new file mode 100644
index 0000000..7fade71
--- /dev/null
+++ b/net/sched/cls_flower.c
@@ -0,0 +1,1976 @@
+/*
+ * 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 <linux/mpls.h>
+
+#include <net/sch_generic.h>
+#include <net/pkt_cls.h>
+#include <net/ip.h>
+#include <net/flow_dissector.h>
+#include <net/geneve.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;
+ struct flow_dissector_key_vlan cvlan;
+ 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;
+ struct flow_dissector_key_ip enc_ip;
+ struct flow_dissector_key_enc_opts enc_opts;
+} __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_work rwork;
+ struct list_head list;
+};
+
+struct fl_flow_tmplt {
+ struct fl_flow_key dummy_key;
+ struct fl_flow_key mask;
+ struct flow_dissector dissector;
+ struct tcf_chain *chain;
+};
+
+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;
+ unsigned int in_hw_count;
+ 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 bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
+ struct fl_flow_mask *mask)
+{
+ const long *lmask = fl_key_get_start(&mask->key, mask);
+ const long *ltmplt;
+ int i;
+
+ if (!tmplt)
+ return true;
+ ltmplt = fl_key_get_start(&tmplt->mask, mask);
+ for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
+ if (~*ltmplt++ & *lmask++)
+ return false;
+ }
+ return true;
+}
+
+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 void fl_mask_free(struct fl_flow_mask *mask)
+{
+ rhashtable_destroy(&mask->ht);
+ kfree(mask);
+}
+
+static void fl_mask_free_work(struct work_struct *work)
+{
+ struct fl_flow_mask *mask = container_of(to_rcu_work(work),
+ struct fl_flow_mask, rwork);
+
+ fl_mask_free(mask);
+}
+
+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);
+ list_del_rcu(&mask->list);
+ if (async)
+ tcf_queue_work(&mask->rwork, fl_mask_free_work);
+ else
+ fl_mask_free(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) {
+ f->in_hw_count = err;
+ 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);
+
+ rhashtable_destroy(&head->ht);
+ 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 },
+ [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
+ [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
+ [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
+ [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy
+enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
+ [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy
+geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
+ [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
+ [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
+ .len = 128 },
+};
+
+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,
+ __be16 ethertype,
+ int vlan_id_key, int vlan_prio_key,
+ struct flow_dissector_key_vlan *key_val,
+ struct flow_dissector_key_vlan *key_mask)
+{
+#define VLAN_PRIORITY_MASK 0x7
+
+ if (tb[vlan_id_key]) {
+ key_val->vlan_id =
+ nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
+ key_mask->vlan_id = VLAN_VID_MASK;
+ }
+ if (tb[vlan_prio_key]) {
+ key_val->vlan_priority =
+ nla_get_u8(tb[vlan_prio_key]) &
+ VLAN_PRIORITY_MASK;
+ key_mask->vlan_priority = VLAN_PRIORITY_MASK;
+ }
+ key_val->vlan_tpid = ethertype;
+ key_mask->vlan_tpid = cpu_to_be16(~0);
+}
+
+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, bool encap,
+ struct flow_dissector_key_ip *key,
+ struct flow_dissector_key_ip *mask)
+{
+ int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
+ int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
+ int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
+ int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
+
+ fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
+ fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
+}
+
+static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
+ int depth, int option_len,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
+ struct nlattr *class = NULL, *type = NULL, *data = NULL;
+ struct geneve_opt *opt;
+ int err, data_len = 0;
+
+ if (option_len > sizeof(struct geneve_opt))
+ data_len = option_len - sizeof(struct geneve_opt);
+
+ opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
+ memset(opt, 0xff, option_len);
+ opt->length = data_len / 4;
+ opt->r1 = 0;
+ opt->r2 = 0;
+ opt->r3 = 0;
+
+ /* If no mask has been prodived we assume an exact match. */
+ if (!depth)
+ return sizeof(struct geneve_opt) + data_len;
+
+ if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
+ NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
+ return -EINVAL;
+ }
+
+ err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
+ nla, geneve_opt_policy, extack);
+ if (err < 0)
+ return err;
+
+ /* We are not allowed to omit any of CLASS, TYPE or DATA
+ * fields from the key.
+ */
+ if (!option_len &&
+ (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
+ !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
+ !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
+ NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
+ return -EINVAL;
+ }
+
+ /* Omitting any of CLASS, TYPE or DATA fields is allowed
+ * for the mask.
+ */
+ if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
+ int new_len = key->enc_opts.len;
+
+ data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
+ data_len = nla_len(data);
+ if (data_len < 4) {
+ NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
+ return -ERANGE;
+ }
+ if (data_len % 4) {
+ NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
+ return -ERANGE;
+ }
+
+ new_len += sizeof(struct geneve_opt) + data_len;
+ BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
+ if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
+ NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
+ return -ERANGE;
+ }
+ opt->length = data_len / 4;
+ memcpy(opt->opt_data, nla_data(data), data_len);
+ }
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
+ class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
+ opt->opt_class = nla_get_be16(class);
+ }
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
+ type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
+ opt->type = nla_get_u8(type);
+ }
+
+ return sizeof(struct geneve_opt) + data_len;
+}
+
+static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
+ struct fl_flow_key *mask,
+ struct netlink_ext_ack *extack)
+{
+ const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
+ int err, option_len, key_depth, msk_depth = 0;
+
+ err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS],
+ TCA_FLOWER_KEY_ENC_OPTS_MAX,
+ enc_opts_policy, extack);
+ if (err)
+ return err;
+
+ nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
+ err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
+ TCA_FLOWER_KEY_ENC_OPTS_MAX,
+ enc_opts_policy, extack);
+ if (err)
+ return err;
+
+ nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
+ msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
+ }
+
+ nla_for_each_attr(nla_opt_key, nla_enc_key,
+ nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
+ switch (nla_type(nla_opt_key)) {
+ case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
+ option_len = 0;
+ key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
+ option_len = fl_set_geneve_opt(nla_opt_key, key,
+ key_depth, option_len,
+ extack);
+ if (option_len < 0)
+ return option_len;
+
+ key->enc_opts.len += option_len;
+ /* At the same time we need to parse through the mask
+ * in order to verify exact and mask attribute lengths.
+ */
+ mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
+ option_len = fl_set_geneve_opt(nla_opt_msk, mask,
+ msk_depth, option_len,
+ extack);
+ if (option_len < 0)
+ return option_len;
+
+ mask->enc_opts.len += option_len;
+ if (key->enc_opts.len != mask->enc_opts.len) {
+ NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
+ return -EINVAL;
+ }
+
+ if (msk_depth)
+ nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
+ break;
+ default:
+ NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+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 (eth_type_vlan(ethertype)) {
+ fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
+ TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
+ &mask->vlan);
+
+ if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
+ ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
+ if (eth_type_vlan(ethertype)) {
+ fl_set_key_vlan(tb, ethertype,
+ TCA_FLOWER_KEY_CVLAN_ID,
+ TCA_FLOWER_KEY_CVLAN_PRIO,
+ &key->cvlan, &mask->cvlan);
+ fl_set_key_val(tb, &key->basic.n_proto,
+ TCA_FLOWER_KEY_CVLAN_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);
+ }
+ }
+ } 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, false, &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));
+
+ fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
+ ret = fl_set_enc_opt(tb, key, mask, extack);
+ if (ret)
+ return ret;
+ }
+
+ 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 flow_dissector *dissector,
+ struct fl_flow_key *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, keys, cnt,
+ FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_PORTS, tp);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_IP, ip);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_TCP, tcp);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ICMP, icmp);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ARP, arp);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_MPLS, mpls);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_VLAN, vlan);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_CVLAN, cvlan);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
+ if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
+ FL_KEY_IS_MASKED(mask, enc_ipv6))
+ FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
+ enc_control);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
+
+ skb_flow_dissector_init(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->dissector, &newmask->key);
+
+ 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 fl_flow_tmplt *tmplt,
+ 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);
+
+ if (!fl_mask_fits_tmplt(tmplt, mask)) {
+ NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
+ return -EINVAL;
+ }
+
+ 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,
+ tp->chain->tmplt_priv, 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 (!fold)
+ 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;
+
+ arg->count = arg->skip;
+
+ while ((f = idr_get_next_ul(&head->handle_idr,
+ &arg->cookie)) != NULL) {
+ if (arg->fn(tp, f, arg) < 0) {
+ arg->stop = 1;
+ break;
+ }
+ arg->cookie = f->handle + 1;
+ arg->count++;
+ }
+}
+
+static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
+ void *cb_priv, struct netlink_ext_ack *extack)
+{
+ struct cls_fl_head *head = rtnl_dereference(tp->root);
+ struct tc_cls_flower_offload cls_flower = {};
+ struct tcf_block *block = tp->chain->block;
+ struct fl_flow_mask *mask;
+ struct cls_fl_filter *f;
+ int err;
+
+ list_for_each_entry(mask, &head->masks, list) {
+ list_for_each_entry(f, &mask->filters, list) {
+ if (tc_skip_hw(f->flags))
+ continue;
+
+ tc_cls_common_offload_init(&cls_flower.common, tp,
+ f->flags, extack);
+ cls_flower.command = add ?
+ TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY;
+ cls_flower.cookie = (unsigned long)f;
+ cls_flower.dissector = &mask->dissector;
+ cls_flower.mask = &mask->key;
+ cls_flower.key = &f->mkey;
+ cls_flower.exts = &f->exts;
+ cls_flower.classid = f->res.classid;
+
+ err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
+ if (err) {
+ if (add && tc_skip_sw(f->flags))
+ return err;
+ continue;
+ }
+
+ tc_cls_offload_cnt_update(block, &f->in_hw_count,
+ &f->flags, add);
+ }
+ }
+
+ return 0;
+}
+
+static void fl_hw_create_tmplt(struct tcf_chain *chain,
+ struct fl_flow_tmplt *tmplt)
+{
+ struct tc_cls_flower_offload cls_flower = {};
+ struct tcf_block *block = chain->block;
+ struct tcf_exts dummy_exts = { 0, };
+
+ cls_flower.common.chain_index = chain->index;
+ cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
+ cls_flower.cookie = (unsigned long) tmplt;
+ cls_flower.dissector = &tmplt->dissector;
+ cls_flower.mask = &tmplt->mask;
+ cls_flower.key = &tmplt->dummy_key;
+ cls_flower.exts = &dummy_exts;
+
+ /* We don't care if driver (any of them) fails to handle this
+ * call. It serves just as a hint for it.
+ */
+ tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
+ &cls_flower, false);
+}
+
+static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
+ struct fl_flow_tmplt *tmplt)
+{
+ struct tc_cls_flower_offload cls_flower = {};
+ struct tcf_block *block = chain->block;
+
+ cls_flower.common.chain_index = chain->index;
+ cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
+ cls_flower.cookie = (unsigned long) tmplt;
+
+ tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
+ &cls_flower, false);
+}
+
+static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
+ struct nlattr **tca,
+ struct netlink_ext_ack *extack)
+{
+ struct fl_flow_tmplt *tmplt;
+ struct nlattr **tb;
+ int err;
+
+ if (!tca[TCA_OPTIONS])
+ return ERR_PTR(-EINVAL);
+
+ tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
+ if (!tb)
+ return ERR_PTR(-ENOBUFS);
+ err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
+ fl_policy, NULL);
+ if (err)
+ goto errout_tb;
+
+ tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
+ if (!tmplt) {
+ err = -ENOMEM;
+ goto errout_tb;
+ }
+ tmplt->chain = chain;
+ err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
+ if (err)
+ goto errout_tmplt;
+ kfree(tb);
+
+ fl_init_dissector(&tmplt->dissector, &tmplt->mask);
+
+ fl_hw_create_tmplt(chain, tmplt);
+
+ return tmplt;
+
+errout_tmplt:
+ kfree(tmplt);
+errout_tb:
+ kfree(tb);
+ return ERR_PTR(err);
+}
+
+static void fl_tmplt_destroy(void *tmplt_priv)
+{
+ struct fl_flow_tmplt *tmplt = tmplt_priv;
+
+ fl_hw_destroy_tmplt(tmplt->chain, tmplt);
+ kfree(tmplt);
+}
+
+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, bool encap,
+ struct flow_dissector_key_ip *key,
+ struct flow_dissector_key_ip *mask)
+{
+ int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
+ int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
+ int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
+ int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
+
+ if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
+ fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
+ return -1;
+
+ return 0;
+}
+
+static int fl_dump_key_vlan(struct sk_buff *skb,
+ int vlan_id_key, int vlan_prio_key,
+ 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, vlan_id_key,
+ vlan_key->vlan_id);
+ if (err)
+ return err;
+ }
+ if (vlan_mask->vlan_priority) {
+ err = nla_put_u8(skb, vlan_prio_key,
+ 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_key_geneve_opt(struct sk_buff *skb,
+ struct flow_dissector_key_enc_opts *enc_opts)
+{
+ struct geneve_opt *opt;
+ struct nlattr *nest;
+ int opt_off = 0;
+
+ nest = nla_nest_start(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
+ if (!nest)
+ goto nla_put_failure;
+
+ while (enc_opts->len > opt_off) {
+ opt = (struct geneve_opt *)&enc_opts->data[opt_off];
+
+ if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
+ opt->opt_class))
+ goto nla_put_failure;
+ if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
+ opt->type))
+ goto nla_put_failure;
+ if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
+ opt->length * 4, opt->opt_data))
+ goto nla_put_failure;
+
+ opt_off += sizeof(struct geneve_opt) + opt->length * 4;
+ }
+ nla_nest_end(skb, nest);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -EMSGSIZE;
+}
+
+static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
+ struct flow_dissector_key_enc_opts *enc_opts)
+{
+ struct nlattr *nest;
+ int err;
+
+ if (!enc_opts->len)
+ return 0;
+
+ nest = nla_nest_start(skb, enc_opt_type);
+ if (!nest)
+ goto nla_put_failure;
+
+ switch (enc_opts->dst_opt_type) {
+ case TUNNEL_GENEVE_OPT:
+ err = fl_dump_key_geneve_opt(skb, enc_opts);
+ if (err)
+ goto nla_put_failure;
+ break;
+ default:
+ goto nla_put_failure;
+ }
+ nla_nest_end(skb, nest);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -EMSGSIZE;
+}
+
+static int fl_dump_key_enc_opt(struct sk_buff *skb,
+ struct flow_dissector_key_enc_opts *key_opts,
+ struct flow_dissector_key_enc_opts *msk_opts)
+{
+ int err;
+
+ err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
+ if (err)
+ return err;
+
+ return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
+}
+
+static int fl_dump_key(struct sk_buff *skb, struct net *net,
+ struct fl_flow_key *key, struct fl_flow_key *mask)
+{
+ 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 (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, TCA_FLOWER_KEY_VLAN_ID,
+ TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
+ goto nla_put_failure;
+
+ if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
+ TCA_FLOWER_KEY_CVLAN_PRIO,
+ &key->cvlan, &mask->cvlan) ||
+ (mask->cvlan.vlan_tpid &&
+ nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
+ key->cvlan.vlan_tpid)))
+ goto nla_put_failure;
+
+ if (mask->basic.n_proto) {
+ if (mask->cvlan.vlan_tpid) {
+ if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
+ key->basic.n_proto))
+ goto nla_put_failure;
+ } else if (mask->vlan.vlan_tpid) {
+ if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
+ key->basic.n_proto))
+ 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, false, &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)) ||
+ fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
+ fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
+ goto nla_put_failure;
+
+ if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
+ goto nla_put_failure;
+
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+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 (fl_dump_key(skb, net, key, mask))
+ goto nla_put_failure;
+
+ if (!tc_skip_hw(f->flags))
+ fl_hw_update_stats(tp, f);
+
+ 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 int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
+{
+ struct fl_flow_tmplt *tmplt = tmplt_priv;
+ struct fl_flow_key *key, *mask;
+ struct nlattr *nest;
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (!nest)
+ goto nla_put_failure;
+
+ key = &tmplt->dummy_key;
+ mask = &tmplt->mask;
+
+ if (fl_dump_key(skb, net, key, mask))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, nest);
+
+ return skb->len;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -EMSGSIZE;
+}
+
+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,
+ .reoffload = fl_reoffload,
+ .dump = fl_dump,
+ .bind_class = fl_bind_class,
+ .tmplt_create = fl_tmplt_create,
+ .tmplt_destroy = fl_tmplt_destroy,
+ .tmplt_dump = fl_tmplt_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");