/*
* Distributed under the terms of the GNU GPL version 2.
- * Copyright (c) 2007, 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira Networks.
*
* Significant portions of this file may be copied from parts of the Linux
* kernel, by Linus Torvalds and others.
#include "flow.h"
#include "datapath.h"
+#include <asm/uaccess.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/ip.h>
+#include <linux/ipv6.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/icmp.h>
+#include <linux/icmpv6.h>
#include <net/inet_ecn.h>
#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/ndisc.h>
-#include "compat.h"
+#include "vlan.h"
-struct kmem_cache *flow_cache;
-static unsigned int hash_seed;
+static struct kmem_cache *flow_cache;
+static unsigned int hash_seed __read_mostly;
static inline bool arphdr_ok(struct sk_buff *skb)
{
return skb->len >= skb_transport_offset(skb) + sizeof(struct icmphdr);
}
+u64 flow_used_time(unsigned long flow_jiffies)
+{
+ struct timespec cur_ts;
+ u64 cur_ms, idle_ms;
+
+ ktime_get_ts(&cur_ts);
+ idle_ms = jiffies_to_msecs(jiffies - flow_jiffies);
+ cur_ms = (u64)cur_ts.tv_sec * MSEC_PER_SEC +
+ cur_ts.tv_nsec / NSEC_PER_MSEC;
+
+ return cur_ms - idle_ms;
+}
+
+static int parse_ipv6hdr(struct sk_buff *skb, struct sw_flow_key *key)
+{
+ unsigned int nh_ofs = skb_network_offset(skb);
+ unsigned int nh_len;
+ int payload_ofs;
+ struct ipv6hdr *nh;
+ uint8_t nexthdr;
+
+ if (unlikely(skb->len < nh_ofs + sizeof(*nh)))
+ return -EINVAL;
+
+ nh = ipv6_hdr(skb);
+ nexthdr = nh->nexthdr;
+ payload_ofs = (u8 *)(nh + 1) - skb->data;
+
+ ipv6_addr_copy(&key->ipv6_src, &nh->saddr);
+ ipv6_addr_copy(&key->ipv6_dst, &nh->daddr);
+ key->nw_tos = ipv6_get_dsfield(nh) & ~INET_ECN_MASK;
+ key->nw_proto = NEXTHDR_NONE;
+
+ payload_ofs = ipv6_skip_exthdr(skb, payload_ofs, &nexthdr);
+ if (unlikely(payload_ofs < 0))
+ return -EINVAL;
+
+ nh_len = payload_ofs - nh_ofs;
+
+ /* Pull enough header bytes to account for the IP header plus the
+ * longest transport header that we parse, currently 20 bytes for TCP.
+ * To dig deeper than the transport header, transport parsers may need
+ * to pull more header bytes.
+ */
+ if (unlikely(!pskb_may_pull(skb, min(nh_ofs + nh_len + 20, skb->len))))
+ return -ENOMEM;
+
+ skb_set_transport_header(skb, nh_ofs + nh_len);
+ key->nw_proto = nexthdr;
+ return nh_len;
+}
+
+static bool icmp6hdr_ok(struct sk_buff *skb)
+{
+ return skb->len >= skb_transport_offset(skb) + sizeof(struct icmp6hdr);
+}
+
#define TCP_FLAGS_OFFSET 13
#define TCP_FLAG_MASK 0x3f
spin_unlock_bh(&flow->lock);
}
-struct sw_flow_actions *flow_actions_alloc(size_t n_actions)
+struct sw_flow_actions *flow_actions_alloc(const struct nlattr *actions)
{
+ int actions_len = nla_len(actions);
struct sw_flow_actions *sfa;
/* At least DP_MAX_PORTS actions are required to be able to flood a
* packet to every port. Factor of 2 allows for setting VLAN tags,
* etc. */
- if (n_actions > 2 * DP_MAX_PORTS)
+ if (actions_len > 2 * DP_MAX_PORTS * nla_total_size(4))
return ERR_PTR(-EINVAL);
- sfa = kmalloc(sizeof *sfa + n_actions * sizeof(union odp_action),
- GFP_KERNEL);
+ sfa = kmalloc(sizeof(*sfa) + actions_len, GFP_KERNEL);
if (!sfa)
return ERR_PTR(-ENOMEM);
- sfa->n_actions = n_actions;
+ sfa->actions_len = actions_len;
+ memcpy(sfa->actions, nla_data(actions), actions_len);
return sfa;
}
return;
if (atomic_dec_and_test(&flow->refcnt)) {
- kfree(flow->sf_acts);
+ kfree((struct sf_flow_acts __force *)flow->sf_acts);
kmem_cache_free(flow_cache, flow);
}
}
call_rcu(&sf_acts->rcu, rcu_free_acts_callback);
}
-static void parse_vlan(struct sk_buff *skb, struct odp_flow_key *key)
+static void parse_vlan(struct sk_buff *skb, struct sw_flow_key *key)
{
struct qtag_prefix {
__be16 eth_type; /* ETH_P_8021Q */
return;
qp = (struct qtag_prefix *) skb->data;
- key->dl_tci = qp->tci | htons(ODP_TCI_PRESENT);
+ key->dl_tci = qp->tci | htons(VLAN_TAG_PRESENT);
__skb_pull(skb, sizeof(struct qtag_prefix));
}
u8 ssap; /* Always 0xAA */
u8 ctrl;
u8 oui[3];
- u16 ethertype;
+ __be16 ethertype;
};
struct llc_snap_hdr *llc;
__be16 proto;
proto = *(__be16 *) skb->data;
__skb_pull(skb, sizeof(__be16));
- if (ntohs(proto) >= ODP_DL_TYPE_ETH2_CUTOFF)
+ if (ntohs(proto) >= 1536)
return proto;
if (unlikely(skb->len < sizeof(struct llc_snap_hdr)))
- return htons(ODP_DL_TYPE_NOT_ETH_TYPE);
+ return htons(ETH_P_802_2);
llc = (struct llc_snap_hdr *) skb->data;
if (llc->dsap != LLC_SAP_SNAP ||
llc->ssap != LLC_SAP_SNAP ||
(llc->oui[0] | llc->oui[1] | llc->oui[2]) != 0)
- return htons(ODP_DL_TYPE_NOT_ETH_TYPE);
+ return htons(ETH_P_802_2);
__skb_pull(skb, sizeof(struct llc_snap_hdr));
return llc->ethertype;
}
+static int parse_icmpv6(struct sk_buff *skb, struct sw_flow_key *key,
+ int nh_len)
+{
+ struct icmp6hdr *icmp = icmp6_hdr(skb);
+
+ /* The ICMPv6 type and code fields use the 16-bit transport port
+ * fields, so we need to store them in 16-bit network byte order.
+ */
+ key->tp_src = htons(icmp->icmp6_type);
+ key->tp_dst = htons(icmp->icmp6_code);
+
+ if (icmp->icmp6_code == 0 &&
+ (icmp->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION ||
+ icmp->icmp6_type == NDISC_NEIGHBOUR_ADVERTISEMENT)) {
+ int icmp_len = skb->len - skb_transport_offset(skb);
+ struct nd_msg *nd;
+ int offset;
+
+ /* In order to process neighbor discovery options, we need the
+ * entire packet.
+ */
+ if (unlikely(icmp_len < sizeof(*nd)))
+ return 0;
+ if (unlikely(skb_linearize(skb)))
+ return -ENOMEM;
+
+ nd = (struct nd_msg *)skb_transport_header(skb);
+ ipv6_addr_copy(&key->nd_target, &nd->target);
+
+ icmp_len -= sizeof(*nd);
+ offset = 0;
+ while (icmp_len >= 8) {
+ struct nd_opt_hdr *nd_opt = (struct nd_opt_hdr *)(nd->opt + offset);
+ int opt_len = nd_opt->nd_opt_len * 8;
+
+ if (unlikely(!opt_len || opt_len > icmp_len))
+ goto invalid;
+
+ /* Store the link layer address if the appropriate
+ * option is provided. It is considered an error if
+ * the same link layer option is specified twice.
+ */
+ if (nd_opt->nd_opt_type == ND_OPT_SOURCE_LL_ADDR
+ && opt_len == 8) {
+ if (unlikely(!is_zero_ether_addr(key->arp_sha)))
+ goto invalid;
+ memcpy(key->arp_sha,
+ &nd->opt[offset+sizeof(*nd_opt)], ETH_ALEN);
+ } else if (nd_opt->nd_opt_type == ND_OPT_TARGET_LL_ADDR
+ && opt_len == 8) {
+ if (unlikely(!is_zero_ether_addr(key->arp_tha)))
+ goto invalid;
+ memcpy(key->arp_tha,
+ &nd->opt[offset+sizeof(*nd_opt)], ETH_ALEN);
+ }
+
+ icmp_len -= opt_len;
+ offset += opt_len;
+ }
+ }
+
+ return 0;
+
+invalid:
+ memset(&key->nd_target, 0, sizeof(key->nd_target));
+ memset(key->arp_sha, 0, sizeof(key->arp_sha));
+ memset(key->arp_tha, 0, sizeof(key->arp_tha));
+
+ return 0;
+}
+
/**
* flow_extract - extracts a flow key from an Ethernet frame.
* @skb: sk_buff that contains the frame, with skb->data pointing to the
* - skb->network_header: just past the Ethernet header, or just past the
* VLAN header, to the first byte of the Ethernet payload.
*
- * - skb->transport_header: If key->dl_type is ETH_P_IP on output, then just
- * past the IPv4 header, if one is present and of a correct length,
- * otherwise the same as skb->network_header. For other key->dl_type
- * values it is left untouched.
+ * - skb->transport_header: If key->dl_type is ETH_P_IP or ETH_P_IPV6
+ * on output, then just past the IP header, if one is present and
+ * of a correct length, otherwise the same as skb->network_header.
+ * For other key->dl_type values it is left untouched.
*/
-int flow_extract(struct sk_buff *skb, u16 in_port, struct odp_flow_key *key,
+int flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
bool *is_frag)
{
struct ethhdr *eth;
- memset(key, 0, sizeof *key);
+ memset(key, 0, sizeof(*key));
key->tun_id = OVS_CB(skb)->tun_id;
key->in_port = in_port;
*is_frag = false;
/*
* We would really like to pull as many bytes as we could possibly
- * want to parse into the linear data area. Currently that is:
+ * want to parse into the linear data area. Currently, for IPv4,
+ * that is:
*
* 14 Ethernet header
* 4 VLAN header
/* dl_type, dl_vlan, dl_vlan_pcp. */
__skb_pull(skb, 2 * ETH_ALEN);
- if (eth->h_proto == htons(ETH_P_8021Q))
+
+ if (vlan_tx_tag_present(skb))
+ key->dl_tci = htons(vlan_get_tci(skb));
+ else if (eth->h_proto == htons(ETH_P_8021Q))
parse_vlan(skb, key);
+
key->dl_type = parse_ethertype(skb);
skb_reset_network_header(skb);
__skb_push(skb, skb->data - (unsigned char *)eth);
}
nh = ip_hdr(skb);
- key->nw_src = nh->saddr;
- key->nw_dst = nh->daddr;
+ key->ipv4_src = nh->saddr;
+ key->ipv4_dst = nh->daddr;
key->nw_tos = nh->tos & ~INET_ECN_MASK;
key->nw_proto = nh->protocol;
/* Transport layer. */
- if (!(nh->frag_off & htons(IP_MF | IP_OFFSET))) {
+ if (!(nh->frag_off & htons(IP_MF | IP_OFFSET)) &&
+ !(skb_shinfo(skb)->gso_type & SKB_GSO_UDP)) {
if (key->nw_proto == IPPROTO_TCP) {
if (tcphdr_ok(skb)) {
struct tcphdr *tcp = tcp_hdr(skb);
if (key->nw_proto == ARPOP_REQUEST
|| key->nw_proto == ARPOP_REPLY) {
- memcpy(&key->nw_src, arp->ar_sip, sizeof(key->nw_src));
- memcpy(&key->nw_dst, arp->ar_tip, sizeof(key->nw_dst));
+ memcpy(&key->ipv4_src, arp->ar_sip, sizeof(key->ipv4_src));
+ memcpy(&key->ipv4_dst, arp->ar_tip, sizeof(key->ipv4_dst));
+ memcpy(key->arp_sha, arp->ar_sha, ETH_ALEN);
+ memcpy(key->arp_tha, arp->ar_tha, ETH_ALEN);
+ }
+ }
+ } else if (key->dl_type == htons(ETH_P_IPV6)) {
+ int nh_len; /* IPv6 Header + Extensions */
+
+ nh_len = parse_ipv6hdr(skb, key);
+ if (unlikely(nh_len < 0)) {
+ if (nh_len == -EINVAL) {
+ skb->transport_header = skb->network_header;
+ return 0;
+ }
+ return nh_len;
+ }
+
+ /* Transport layer. */
+ if (key->nw_proto == NEXTHDR_TCP) {
+ if (tcphdr_ok(skb)) {
+ struct tcphdr *tcp = tcp_hdr(skb);
+ key->tp_src = tcp->source;
+ key->tp_dst = tcp->dest;
+ }
+ } else if (key->nw_proto == NEXTHDR_UDP) {
+ if (udphdr_ok(skb)) {
+ struct udphdr *udp = udp_hdr(skb);
+ key->tp_src = udp->source;
+ key->tp_dst = udp->dest;
+ }
+ } else if (key->nw_proto == NEXTHDR_ICMP) {
+ if (icmp6hdr_ok(skb)) {
+ int error = parse_icmpv6(skb, key, nh_len);
+ if (error < 0)
+ return error;
}
}
}
return 0;
}
-u32 flow_hash(const struct odp_flow_key *key)
+u32 flow_hash(const struct sw_flow_key *key)
{
- return jhash2((u32*)key, sizeof *key / sizeof(u32), hash_seed);
+ return jhash2((u32*)key, sizeof(*key) / sizeof(u32), hash_seed);
}
int flow_cmp(const struct tbl_node *node, void *key2_)
{
- const struct odp_flow_key *key1 = &flow_cast(node)->key;
- const struct odp_flow_key *key2 = key2_;
+ const struct sw_flow_key *key1 = &flow_cast(node)->key;
+ const struct sw_flow_key *key2 = key2_;
+
+ return !memcmp(key1, key2, sizeof(struct sw_flow_key));
+}
+
+/**
+ * flow_from_nlattrs - parses Netlink attributes into a flow key.
+ * @swkey: receives the extracted flow key.
+ * @key: Netlink attribute holding nested %ODP_KEY_ATTR_* Netlink attribute
+ * sequence.
+ *
+ * This state machine accepts the following forms, with [] for optional
+ * elements and | for alternatives:
+ *
+ * [tun_id] in_port ethernet [8021q] [ethertype \
+ * [IPv4 [TCP|UDP|ICMP] | IPv6 [TCP|UDP|ICMPv6 [ND]] | ARP]]
+ */
+int flow_from_nlattrs(struct sw_flow_key *swkey, const struct nlattr *attr)
+{
+ const struct nlattr *nla;
+ u16 prev_type;
+ int rem;
+
+ memset(swkey, 0, sizeof(*swkey));
+ swkey->dl_type = htons(ETH_P_802_2);
+
+ prev_type = ODP_KEY_ATTR_UNSPEC;
+ nla_for_each_nested(nla, attr, rem) {
+ static const u32 key_lens[ODP_KEY_ATTR_MAX + 1] = {
+ [ODP_KEY_ATTR_TUN_ID] = 8,
+ [ODP_KEY_ATTR_IN_PORT] = 4,
+ [ODP_KEY_ATTR_ETHERNET] = sizeof(struct odp_key_ethernet),
+ [ODP_KEY_ATTR_8021Q] = sizeof(struct odp_key_8021q),
+ [ODP_KEY_ATTR_ETHERTYPE] = 2,
+ [ODP_KEY_ATTR_IPV4] = sizeof(struct odp_key_ipv4),
+ [ODP_KEY_ATTR_IPV6] = sizeof(struct odp_key_ipv6),
+ [ODP_KEY_ATTR_TCP] = sizeof(struct odp_key_tcp),
+ [ODP_KEY_ATTR_UDP] = sizeof(struct odp_key_udp),
+ [ODP_KEY_ATTR_ICMP] = sizeof(struct odp_key_icmp),
+ [ODP_KEY_ATTR_ICMPV6] = sizeof(struct odp_key_icmpv6),
+ [ODP_KEY_ATTR_ARP] = sizeof(struct odp_key_arp),
+ [ODP_KEY_ATTR_ND] = sizeof(struct odp_key_nd),
+ };
+
+ const struct odp_key_ethernet *eth_key;
+ const struct odp_key_8021q *q_key;
+ const struct odp_key_ipv4 *ipv4_key;
+ const struct odp_key_ipv6 *ipv6_key;
+ const struct odp_key_tcp *tcp_key;
+ const struct odp_key_udp *udp_key;
+ const struct odp_key_icmp *icmp_key;
+ const struct odp_key_icmpv6 *icmpv6_key;
+ const struct odp_key_arp *arp_key;
+ const struct odp_key_nd *nd_key;
+
+ int type = nla_type(nla);
+
+ if (type > ODP_KEY_ATTR_MAX || nla_len(nla) != key_lens[type])
+ return -EINVAL;
+
+#define TRANSITION(PREV_TYPE, TYPE) (((PREV_TYPE) << 16) | (TYPE))
+ switch (TRANSITION(prev_type, type)) {
+ case TRANSITION(ODP_KEY_ATTR_UNSPEC, ODP_KEY_ATTR_TUN_ID):
+ swkey->tun_id = nla_get_be64(nla);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_UNSPEC, ODP_KEY_ATTR_IN_PORT):
+ case TRANSITION(ODP_KEY_ATTR_TUN_ID, ODP_KEY_ATTR_IN_PORT):
+ if (nla_get_u32(nla) >= DP_MAX_PORTS)
+ return -EINVAL;
+ swkey->in_port = nla_get_u32(nla);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_IN_PORT, ODP_KEY_ATTR_ETHERNET):
+ eth_key = nla_data(nla);
+ memcpy(swkey->dl_src, eth_key->eth_src, ETH_ALEN);
+ memcpy(swkey->dl_dst, eth_key->eth_dst, ETH_ALEN);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_ETHERNET, ODP_KEY_ATTR_8021Q):
+ q_key = nla_data(nla);
+ /* Only standard 0x8100 VLANs currently supported. */
+ if (q_key->q_tpid != htons(ETH_P_8021Q))
+ return -EINVAL;
+ if (q_key->q_tci & htons(VLAN_TAG_PRESENT))
+ return -EINVAL;
+ swkey->dl_tci = q_key->q_tci | htons(VLAN_TAG_PRESENT);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_8021Q, ODP_KEY_ATTR_ETHERTYPE):
+ case TRANSITION(ODP_KEY_ATTR_ETHERNET, ODP_KEY_ATTR_ETHERTYPE):
+ swkey->dl_type = nla_get_be16(nla);
+ if (ntohs(swkey->dl_type) < 1536)
+ return -EINVAL;
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_ETHERTYPE, ODP_KEY_ATTR_IPV4):
+ if (swkey->dl_type != htons(ETH_P_IP))
+ return -EINVAL;
+ ipv4_key = nla_data(nla);
+ swkey->ipv4_src = ipv4_key->ipv4_src;
+ swkey->ipv4_dst = ipv4_key->ipv4_dst;
+ swkey->nw_proto = ipv4_key->ipv4_proto;
+ swkey->nw_tos = ipv4_key->ipv4_tos;
+ if (swkey->nw_tos & INET_ECN_MASK)
+ return -EINVAL;
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_ETHERTYPE, ODP_KEY_ATTR_IPV6):
+ if (swkey->dl_type != htons(ETH_P_IPV6))
+ return -EINVAL;
+ ipv6_key = nla_data(nla);
+ memcpy(&swkey->ipv6_src, ipv6_key->ipv6_src,
+ sizeof(swkey->ipv6_src));
+ memcpy(&swkey->ipv6_dst, ipv6_key->ipv6_dst,
+ sizeof(swkey->ipv6_dst));
+ swkey->nw_proto = ipv6_key->ipv6_proto;
+ swkey->nw_tos = ipv6_key->ipv6_tos;
+ if (swkey->nw_tos & INET_ECN_MASK)
+ return -EINVAL;
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_IPV4, ODP_KEY_ATTR_TCP):
+ case TRANSITION(ODP_KEY_ATTR_IPV6, ODP_KEY_ATTR_TCP):
+ if (swkey->nw_proto != IPPROTO_TCP)
+ return -EINVAL;
+ tcp_key = nla_data(nla);
+ swkey->tp_src = tcp_key->tcp_src;
+ swkey->tp_dst = tcp_key->tcp_dst;
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_IPV4, ODP_KEY_ATTR_UDP):
+ case TRANSITION(ODP_KEY_ATTR_IPV6, ODP_KEY_ATTR_UDP):
+ if (swkey->nw_proto != IPPROTO_UDP)
+ return -EINVAL;
+ udp_key = nla_data(nla);
+ swkey->tp_src = udp_key->udp_src;
+ swkey->tp_dst = udp_key->udp_dst;
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_IPV4, ODP_KEY_ATTR_ICMP):
+ if (swkey->nw_proto != IPPROTO_ICMP)
+ return -EINVAL;
+ icmp_key = nla_data(nla);
+ swkey->tp_src = htons(icmp_key->icmp_type);
+ swkey->tp_dst = htons(icmp_key->icmp_code);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_IPV6, ODP_KEY_ATTR_ICMPV6):
+ if (swkey->nw_proto != IPPROTO_ICMPV6)
+ return -EINVAL;
+ icmpv6_key = nla_data(nla);
+ swkey->tp_src = htons(icmpv6_key->icmpv6_type);
+ swkey->tp_dst = htons(icmpv6_key->icmpv6_code);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_ETHERTYPE, ODP_KEY_ATTR_ARP):
+ if (swkey->dl_type != htons(ETH_P_ARP))
+ return -EINVAL;
+ arp_key = nla_data(nla);
+ swkey->ipv4_src = arp_key->arp_sip;
+ swkey->ipv4_dst = arp_key->arp_tip;
+ if (arp_key->arp_op & htons(0xff00))
+ return -EINVAL;
+ swkey->nw_proto = ntohs(arp_key->arp_op);
+ memcpy(swkey->arp_sha, arp_key->arp_sha, ETH_ALEN);
+ memcpy(swkey->arp_tha, arp_key->arp_tha, ETH_ALEN);
+ break;
+
+ case TRANSITION(ODP_KEY_ATTR_ICMPV6, ODP_KEY_ATTR_ND):
+ if (swkey->tp_src != htons(NDISC_NEIGHBOUR_SOLICITATION)
+ && swkey->tp_src != htons(NDISC_NEIGHBOUR_ADVERTISEMENT))
+ return -EINVAL;
+ nd_key = nla_data(nla);
+ memcpy(&swkey->nd_target, nd_key->nd_target,
+ sizeof(swkey->nd_target));
+ memcpy(swkey->arp_sha, nd_key->nd_sll, ETH_ALEN);
+ memcpy(swkey->arp_tha, nd_key->nd_tll, ETH_ALEN);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ prev_type = type;
+ }
+ if (rem)
+ return -EINVAL;
+
+ switch (prev_type) {
+ case ODP_KEY_ATTR_UNSPEC:
+ return -EINVAL;
+
+ case ODP_KEY_ATTR_TUN_ID:
+ case ODP_KEY_ATTR_IN_PORT:
+ return -EINVAL;
+
+ case ODP_KEY_ATTR_ETHERNET:
+ case ODP_KEY_ATTR_8021Q:
+ return 0;
+
+ case ODP_KEY_ATTR_ETHERTYPE:
+ if (swkey->dl_type == htons(ETH_P_IP) ||
+ swkey->dl_type == htons(ETH_P_ARP))
+ return -EINVAL;
+ return 0;
+
+ case ODP_KEY_ATTR_IPV4:
+ if (swkey->nw_proto == IPPROTO_TCP ||
+ swkey->nw_proto == IPPROTO_UDP ||
+ swkey->nw_proto == IPPROTO_ICMP)
+ return -EINVAL;
+ return 0;
+
+ case ODP_KEY_ATTR_IPV6:
+ if (swkey->nw_proto == IPPROTO_TCP ||
+ swkey->nw_proto == IPPROTO_UDP ||
+ swkey->nw_proto == IPPROTO_ICMPV6)
+ return -EINVAL;
+ return 0;
+
+ case ODP_KEY_ATTR_ICMPV6:
+ if (swkey->tp_src == htons(NDISC_NEIGHBOUR_SOLICITATION) ||
+ swkey->tp_src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT))
+ return -EINVAL;
+ return 0;
+
+ case ODP_KEY_ATTR_TCP:
+ case ODP_KEY_ATTR_UDP:
+ case ODP_KEY_ATTR_ICMP:
+ case ODP_KEY_ATTR_ARP:
+ case ODP_KEY_ATTR_ND:
+ return 0;
+ }
+
+ WARN_ON_ONCE(1);
+ return -EINVAL;
+}
+
+int flow_to_nlattrs(const struct sw_flow_key *swkey, struct sk_buff *skb)
+{
+ struct odp_key_ethernet *eth_key;
+ struct nlattr *nla;
+
+ /* This is an imperfect sanity-check that FLOW_BUFSIZE doesn't need
+ * to be updated, but will at least raise awareness when new ODP key
+ * types are added. */
+ BUILD_BUG_ON(__ODP_KEY_ATTR_MAX != 14);
+
+ if (swkey->tun_id != cpu_to_be64(0))
+ NLA_PUT_BE64(skb, ODP_KEY_ATTR_TUN_ID, swkey->tun_id);
+
+ NLA_PUT_U32(skb, ODP_KEY_ATTR_IN_PORT, swkey->in_port);
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_ETHERNET, sizeof(*eth_key));
+ if (!nla)
+ goto nla_put_failure;
+ eth_key = nla_data(nla);
+ memcpy(eth_key->eth_src, swkey->dl_src, ETH_ALEN);
+ memcpy(eth_key->eth_dst, swkey->dl_dst, ETH_ALEN);
+
+ if (swkey->dl_tci != htons(0)) {
+ struct odp_key_8021q q_key;
+
+ q_key.q_tpid = htons(ETH_P_8021Q);
+ q_key.q_tci = swkey->dl_tci & ~htons(VLAN_TAG_PRESENT);
+ NLA_PUT(skb, ODP_KEY_ATTR_8021Q, sizeof(q_key), &q_key);
+ }
+
+ if (swkey->dl_type == htons(ETH_P_802_2))
+ return 0;
+
+ NLA_PUT_BE16(skb, ODP_KEY_ATTR_ETHERTYPE, swkey->dl_type);
+
+ if (swkey->dl_type == htons(ETH_P_IP)) {
+ struct odp_key_ipv4 *ipv4_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_IPV4, sizeof(*ipv4_key));
+ if (!nla)
+ goto nla_put_failure;
+ ipv4_key = nla_data(nla);
+ memset(ipv4_key, 0, sizeof(struct odp_key_ipv4));
+ ipv4_key->ipv4_src = swkey->ipv4_src;
+ ipv4_key->ipv4_dst = swkey->ipv4_dst;
+ ipv4_key->ipv4_proto = swkey->nw_proto;
+ ipv4_key->ipv4_tos = swkey->nw_tos;
+ } else if (swkey->dl_type == htons(ETH_P_IPV6)) {
+ struct odp_key_ipv6 *ipv6_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_IPV6, sizeof(*ipv6_key));
+ if (!nla)
+ goto nla_put_failure;
+ ipv6_key = nla_data(nla);
+ memset(ipv6_key, 0, sizeof(struct odp_key_ipv6));
+ memcpy(ipv6_key->ipv6_src, &swkey->ipv6_src,
+ sizeof(ipv6_key->ipv6_src));
+ memcpy(ipv6_key->ipv6_dst, &swkey->ipv6_dst,
+ sizeof(ipv6_key->ipv6_dst));
+ ipv6_key->ipv6_proto = swkey->nw_proto;
+ ipv6_key->ipv6_tos = swkey->nw_tos;
+ } else if (swkey->dl_type == htons(ETH_P_ARP)) {
+ struct odp_key_arp *arp_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_ARP, sizeof(*arp_key));
+ if (!nla)
+ goto nla_put_failure;
+ arp_key = nla_data(nla);
+ memset(arp_key, 0, sizeof(struct odp_key_arp));
+ arp_key->arp_sip = swkey->ipv4_src;
+ arp_key->arp_tip = swkey->ipv4_dst;
+ arp_key->arp_op = htons(swkey->nw_proto);
+ memcpy(arp_key->arp_sha, swkey->arp_sha, ETH_ALEN);
+ memcpy(arp_key->arp_tha, swkey->arp_tha, ETH_ALEN);
+ }
+
+ if (swkey->dl_type == htons(ETH_P_IP) ||
+ swkey->dl_type == htons(ETH_P_IPV6)) {
+
+ if (swkey->nw_proto == IPPROTO_TCP) {
+ struct odp_key_tcp *tcp_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_TCP, sizeof(*tcp_key));
+ if (!nla)
+ goto nla_put_failure;
+ tcp_key = nla_data(nla);
+ tcp_key->tcp_src = swkey->tp_src;
+ tcp_key->tcp_dst = swkey->tp_dst;
+ } else if (swkey->nw_proto == IPPROTO_UDP) {
+ struct odp_key_udp *udp_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_UDP, sizeof(*udp_key));
+ if (!nla)
+ goto nla_put_failure;
+ udp_key = nla_data(nla);
+ udp_key->udp_src = swkey->tp_src;
+ udp_key->udp_dst = swkey->tp_dst;
+ } else if (swkey->dl_type == htons(ETH_P_IP) &&
+ swkey->nw_proto == IPPROTO_ICMP) {
+ struct odp_key_icmp *icmp_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_ICMP, sizeof(*icmp_key));
+ if (!nla)
+ goto nla_put_failure;
+ icmp_key = nla_data(nla);
+ icmp_key->icmp_type = ntohs(swkey->tp_src);
+ icmp_key->icmp_code = ntohs(swkey->tp_dst);
+ } else if (swkey->dl_type == htons(ETH_P_IPV6) &&
+ swkey->nw_proto == IPPROTO_ICMPV6) {
+ struct odp_key_icmpv6 *icmpv6_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_ICMPV6,
+ sizeof(*icmpv6_key));
+ if (!nla)
+ goto nla_put_failure;
+ icmpv6_key = nla_data(nla);
+ icmpv6_key->icmpv6_type = ntohs(swkey->tp_src);
+ icmpv6_key->icmpv6_code = ntohs(swkey->tp_dst);
+
+ if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION ||
+ icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) {
+ struct odp_key_nd *nd_key;
+
+ nla = nla_reserve(skb, ODP_KEY_ATTR_ND, sizeof(*nd_key));
+ if (!nla)
+ goto nla_put_failure;
+ nd_key = nla_data(nla);
+ memcpy(nd_key->nd_target, &swkey->nd_target,
+ sizeof(nd_key->nd_target));
+ memcpy(nd_key->nd_sll, swkey->arp_sha, ETH_ALEN);
+ memcpy(nd_key->nd_tll, swkey->arp_tha, ETH_ALEN);
+ }
+ }
+ }
+
+ return 0;
- return !memcmp(key1, key2, sizeof(struct odp_flow_key));
+nla_put_failure:
+ return -EMSGSIZE;
}
/* Initializes the flow module.
if (flow_cache == NULL)
return -ENOMEM;
- get_random_bytes(&hash_seed, sizeof hash_seed);
+ get_random_bytes(&hash_seed, sizeof(hash_seed));
return 0;
}