#define FLOW_TNL_F_KEY (1 << 2)
#define FLOW_TNL_F_OAM (1 << 3)
+#define FLOW_TNL_F_MASK ((1 << 4) - 1)
+
const char *flow_tun_flag_to_string(uint32_t flags);
/* Maximum number of supported MPLS labels. */
*
* The meaning of 'in_port' is context-dependent. In most cases, it is a
* 16-bit OpenFlow 1.0 port number. In the software datapath interface (dpif)
- * layer and its implementations (e.g. dpif-linux, dpif-netdev), it is instead
- * a 32-bit datapath port number.
+ * layer and its implementations (e.g. dpif-netlink, dpif-netdev), it is
+ * instead a 32-bit datapath port number.
*
* The fields are organized in four segments to facilitate staged lookup, where
* lower layer fields are first used to determine if the later fields need to
* reflected in miniflow_extract()!
*/
struct flow {
- /* L1 */
+ /* Metadata */
struct flow_tnl tunnel; /* Encapsulating tunnel parameters. */
ovs_be64 metadata; /* OpenFlow Metadata. */
uint32_t regs[FLOW_N_REGS]; /* Registers. */
union flow_in_port in_port; /* Input port.*/
/* L2, Order the same as in the Ethernet header! */
- uint8_t dl_dst[6]; /* Ethernet destination address. */
- uint8_t dl_src[6]; /* Ethernet source address. */
+ uint8_t dl_dst[ETH_ADDR_LEN]; /* Ethernet destination address. */
+ uint8_t dl_src[ETH_ADDR_LEN]; /* Ethernet source address. */
ovs_be16 dl_type; /* Ethernet frame type. */
ovs_be16 vlan_tci; /* If 802.1Q, TCI | VLAN_CFI; otherwise 0. */
ovs_be32 mpls_lse[FLOW_MAX_MPLS_LABELS]; /* MPLS label stack entry. */
uint8_t nw_tos; /* IP ToS (including DSCP and ECN). */
uint8_t nw_ttl; /* IP TTL/Hop Limit. */
uint8_t nw_proto; /* IP protocol or low 8 bits of ARP opcode. */
- uint8_t arp_sha[6]; /* ARP/ND source hardware address. */
- uint8_t arp_tha[6]; /* ARP/ND target hardware address. */
+ uint8_t arp_sha[ETH_ADDR_LEN]; /* ARP/ND source hardware address. */
+ uint8_t arp_tha[ETH_ADDR_LEN]; /* ARP/ND target hardware address. */
struct in6_addr nd_target; /* IPv6 neighbor discovery (ND) target. */
ovs_be16 tcp_flags; /* TCP flags. With L3 to avoid matching L4. */
ovs_be16 pad; /* Padding. */
#define FLOW_U32S (sizeof(struct flow) / 4)
+/* Some flow fields are mutually exclusive or only appear within the flow
+ * pipeline. IPv6 headers are bigger than IPv4 and MPLS, and IPv6 ND packets
+ * are bigger than TCP,UDP and IGMP packets. */
+#define FLOW_MAX_PACKET_U32S (FLOW_U32S \
+ /* Unused in datapath */ - FLOW_U32_SIZE(regs) \
+ - FLOW_U32_SIZE(metadata) \
+ /* L2.5/3 */ - FLOW_U32_SIZE(nw_src) \
+ - FLOW_U32_SIZE(nw_dst) \
+ - FLOW_U32_SIZE(mpls_lse) \
+ /* L4 */ - FLOW_U32_SIZE(tcp_flags) /* incl. pad. */ \
+ - FLOW_U32_SIZE(igmp_group_ip4) \
+ )
+
/* Remember to update FLOW_WC_SEQ when changing 'struct flow'. */
BUILD_ASSERT_DECL(offsetof(struct flow, dp_hash) + sizeof(uint32_t)
== sizeof(struct flow_tnl) + 176
struct flow masks;
};
+#define WC_MASK_FIELD(WC, FIELD) \
+ memset(&(WC)->masks.FIELD, 0xff, sizeof (WC)->masks.FIELD)
+#define WC_UNMASK_FIELD(WC, FIELD) \
+ memset(&(WC)->masks.FIELD, 0, sizeof (WC)->masks.FIELD)
+
void flow_wildcards_init_catchall(struct flow_wildcards *);
+void flow_wildcards_init_for_packet(struct flow_wildcards *,
+ const struct flow *);
+uint64_t flow_wc_map(const struct flow *);
+
void flow_wildcards_clear_non_packet_fields(struct flow_wildcards *);
bool flow_wildcards_is_catchall(const struct flow_wildcards *);
\f
/* Compressed flow. */
-#define MINI_N_INLINE (sizeof(void *) == 4 ? 7 : 8)
+/* Number of 32-bit words present in struct miniflow. */
+#define MINI_N_INLINE 8
+
+/* Maximum number of 32-bit words supported. */
BUILD_ASSERT_DECL(FLOW_U32S <= 63);
/* A sparse representation of a "struct flow".
* the first element of the values array, the next 1-bit is in the next array
* element, and so on.
*
+ * MINI_N_INLINE is the default number of inline words. When a miniflow is
+ * dynamically allocated the actual amount of inline storage may be different.
+ * In that case 'inline_values' contains storage at least for the number
+ * of words indicated by 'map' (one uint32_t for each 1-bit in the map).
+ *
* Elements in values array are allowed to be zero. This is useful for "struct
* minimatch", for which ensuring that the miniflow and minimask members have
* same 'map' allows optimization. This allowance applies only to a miniflow
uint64_t values_inline:1;
union {
uint32_t *offline_values;
- uint32_t inline_values[MINI_N_INLINE];
+ uint32_t inline_values[MINI_N_INLINE]; /* Minimum inline size. */
};
};
+BUILD_ASSERT_DECL(sizeof(struct miniflow)
+ == sizeof(uint64_t) + MINI_N_INLINE * sizeof(uint32_t));
#define MINIFLOW_VALUES_SIZE(COUNT) ((COUNT) * sizeof(uint32_t))
(((UINT64_C(1) << FLOW_U32_SIZE(FIELD)) - 1) \
<< (offsetof(struct flow, FIELD) / 4))
-static inline uint32_t
-mf_get_next_in_map(uint64_t *fmap, uint64_t rm1bit, const uint32_t **fp,
- uint32_t *value)
-{
- *value = 0;
- if (*fmap & rm1bit) {
- uint64_t trash = *fmap & (rm1bit - 1);
+struct mf_for_each_in_map_aux {
+ const uint32_t *values;
+ uint64_t fmap;
+ uint64_t map;
+};
- if (trash) {
- *fmap -= trash;
- *fp += count_1bits(trash);
+static inline bool
+mf_get_next_in_map(struct mf_for_each_in_map_aux *aux, uint32_t *value)
+{
+ if (aux->map) {
+ uint64_t rm1bit = rightmost_1bit(aux->map);
+ aux->map -= rm1bit;
+
+ if (aux->fmap & rm1bit) {
+ /* Advance 'aux->values' to point to the value for 'rm1bit'. */
+ uint64_t trash = aux->fmap & (rm1bit - 1);
+ if (trash) {
+ aux->fmap -= trash;
+ aux->values += count_1bits(trash);
+ }
+
+ /* Retrieve the value for 'rm1bit' then advance past it. */
+ aux->fmap -= rm1bit;
+ *value = *aux->values++;
+ } else {
+ *value = 0;
}
- *value = **fp;
+ return true;
+ } else {
+ return false;
}
- return rm1bit != 0;
}
-/* Iterate through all miniflow u32 values specified by 'MAP'.
- * This works as the first statement in a block.*/
+/* Iterate through all miniflow u32 values specified by 'MAP'. */
#define MINIFLOW_FOR_EACH_IN_MAP(VALUE, FLOW, MAP) \
- const uint32_t *fp_ = miniflow_get_u32_values(FLOW); \
- uint64_t rm1bit_, fmap_, map_; \
- for (fmap_ = (FLOW)->map, map_ = (MAP), rm1bit_ = rightmost_1bit(map_); \
- mf_get_next_in_map(&fmap_, rm1bit_, &fp_, &(VALUE)); \
- map_ -= rm1bit_, rm1bit_ = rightmost_1bit(map_))
+ for (struct mf_for_each_in_map_aux aux__ \
+ = { miniflow_get_u32_values(FLOW), (FLOW)->map, MAP }; \
+ mf_get_next_in_map(&aux__, &(VALUE)); \
+ )
/* Get the value of 'FIELD' of an up to 4 byte wide integer type 'TYPE' of
* a miniflow. */
projects / cascardo / ovs.git / blobdiff