BAD_ARGUMENT = OFP_MKERR(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT)
};
-/* For each NXM_* field, define NFI_NXM_* as consecutive integers starting from
- * zero. */
-enum nxm_field_index {
-#define DEFINE_FIELD(HEADER, MFF_ID, WRITABLE) \
- NFI_NXM_##HEADER,
-#include "nx-match.def"
- N_NXM_FIELDS
-};
-
-struct nxm_field {
- struct hmap_node hmap_node;
- enum nxm_field_index index; /* NFI_* value. */
- uint32_t header; /* NXM_* value. */
- enum mf_field_id mf_id; /* MFF_* value. */
- const struct mf_field *mf;
- const char *name; /* "NXM_*" string. */
- bool writable; /* Writable with NXAST_REG_{MOVE,LOAD}? */
-};
-
-/* All the known fields. */
-static struct nxm_field nxm_fields[N_NXM_FIELDS] = {
-#define DEFINE_FIELD(HEADER, MFF_ID, WRITABLE) \
- { HMAP_NODE_NULL_INITIALIZER, NFI_NXM_##HEADER, NXM_##HEADER, \
- MFF_ID, NULL, "NXM_" #HEADER, WRITABLE },
-#include "nx-match.def"
-};
-
-/* Hash table of 'nxm_fields'. */
-static struct hmap all_nxm_fields = HMAP_INITIALIZER(&all_nxm_fields);
-
-static void
-nxm_init(void)
-{
- if (hmap_is_empty(&all_nxm_fields)) {
- int i;
-
- for (i = 0; i < N_NXM_FIELDS; i++) {
- struct nxm_field *f = &nxm_fields[i];
- hmap_insert(&all_nxm_fields, &f->hmap_node,
- hash_int(f->header, 0));
- f->mf = mf_from_id(f->mf_id);
- }
-
- /* Verify that the header values are unique (duplicate "case" values
- * cause a compile error). */
- switch (0) {
-#define DEFINE_FIELD(HEADER, MFF_ID, WRITABLE) \
- case NXM_##HEADER: break;
-#include "nx-match.def"
- }
- }
-}
-
-static const struct nxm_field *
-nxm_field_lookup(uint32_t header)
-{
- struct nxm_field *f;
-
- nxm_init();
-
- HMAP_FOR_EACH_WITH_HASH (f, hmap_node, hash_int(header, 0),
- &all_nxm_fields) {
- if (f->header == header) {
- return f;
- }
- }
-
- return NULL;
-}
-
/* Returns the width of the data for a field with the given 'header', in
* bytes. */
int
{
return nxm_field_bytes(header) * 8;
}
-
-const struct mf_field *
-nxm_field_to_mf_field(uint32_t header)
-{
- const struct nxm_field *f = nxm_field_lookup(header);
- return f ? f->mf : NULL;
-}
\f
/* nx_pull_match() and helpers. */
cls_rule_init_catchall(rule, priority);
while ((header = nx_entry_ok(p, match_len)) != 0) {
unsigned length = NXM_LENGTH(header);
- const struct nxm_field *f;
+ const struct mf_field *mf;
int error;
- f = nxm_field_lookup(header);
- if (!f) {
+ mf = mf_from_nxm_header(header);
+ if (!mf) {
error = NXM_BAD_TYPE;
- } else if (!mf_are_prereqs_ok(f->mf, &rule->flow)) {
+ } else if (!mf_are_prereqs_ok(mf, &rule->flow)) {
error = NXM_BAD_PREREQ;
- } else if (!mf_is_all_wild(f->mf, &rule->wc)) {
+ } else if (!mf_is_all_wild(mf, &rule->wc)) {
error = NXM_DUP_TYPE;
} else {
- unsigned int width = f->mf->n_bytes;
+ unsigned int width = mf->n_bytes;
union mf_value value;
memcpy(&value, p + 4, width);
- if (!mf_is_value_valid(f->mf, &value)) {
+ if (!mf_is_value_valid(mf, &value)) {
error = NXM_BAD_VALUE;
} else if (!NXM_HASMASK(header)) {
error = 0;
- mf_set_value(f->mf, &value, rule);
+ mf_set_value(mf, &value, rule);
} else {
union mf_value mask;
memcpy(&mask, p + 4 + width, width);
- if (!mf_is_mask_valid(f->mf, &mask)) {
+ if (!mf_is_mask_valid(mf, &mask)) {
error = NXM_BAD_MASK;
} else {
error = 0;
- mf_set(f->mf, &value, &mask, rule);
+ mf_set(mf, &value, &mask, rule);
}
}
}
if (error) {
char *msg = ofputil_error_to_string(error);
- VLOG_DBG_RL(&rl, "bad nxm_entry with vendor=%"PRIu32", "
- "field=%"PRIu32", hasmask=%"PRIu32", type=%"PRIu32" "
- "(%s)",
+ VLOG_DBG_RL(&rl, "bad nxm_entry %#08"PRIx32" (vendor=%"PRIu32", "
+ "field=%"PRIu32", hasmask=%"PRIu32", len=%"PRIu32"), "
+ "(%s)", header,
NXM_VENDOR(header), NXM_FIELD(header),
- NXM_HASMASK(header), NXM_TYPE(header),
+ NXM_HASMASK(header), NXM_LENGTH(header),
msg);
free(msg);
static void
format_nxm_field_name(struct ds *s, uint32_t header)
{
- const struct nxm_field *f = nxm_field_lookup(header);
- if (f) {
- ds_put_cstr(s, f->name);
+ const struct mf_field *mf = mf_from_nxm_header(header);
+ if (mf) {
+ ds_put_cstr(s, mf->nxm_name);
+ if (NXM_HASMASK(header)) {
+ ds_put_cstr(s, "_W");
+ }
} else {
ds_put_format(s, "%d:%d", NXM_VENDOR(header), NXM_FIELD(header));
}
static uint32_t
parse_nxm_field_name(const char *name, int name_len)
{
- const struct nxm_field *f;
+ bool wild;
+ int i;
/* Check whether it's a field name. */
- for (f = nxm_fields; f < &nxm_fields[ARRAY_SIZE(nxm_fields)]; f++) {
- if (!strncmp(f->name, name, name_len) && f->name[name_len] == '\0') {
- return f->header;
+ wild = name_len > 2 && !memcmp(&name[name_len - 2], "_W", 2);
+ if (wild) {
+ name_len -= 2;
+ }
+ for (i = 0; i < MFF_N_IDS; i++) {
+ const struct mf_field *mf = mf_from_id(i);
+
+ if (mf->nxm_name
+ && !strncmp(mf->nxm_name, name, name_len)
+ && mf->nxm_name[name_len] == '\0') {
+ if (!wild) {
+ return mf->nxm_header;
+ } else if (mf->maskable != MFM_NONE) {
+ return NXM_MAKE_WILD_HEADER(mf->nxm_header);
+ }
}
}
/* nxm_check_reg_move(), nxm_check_reg_load(). */
static bool
-field_ok(const struct nxm_field *f, const struct flow *flow, int size)
+field_ok(const struct mf_field *mf, const struct flow *flow, int size)
{
- return (f
- && !NXM_HASMASK(f->header)
- && mf_are_prereqs_ok(f->mf, flow)
- && size <= nxm_field_bits(f->header));
+ return (mf
+ && mf_are_prereqs_ok(mf, flow)
+ && size <= nxm_field_bits(mf->nxm_header));
}
int
/* Given a flow, checks that the source field represented by 'src_header'
* in the range ['ofs', 'ofs' + 'n_bits') is valid. */
int
-nxm_src_check(ovs_be32 src_header, unsigned int ofs, unsigned int n_bits,
+nxm_src_check(ovs_be32 src_header_, unsigned int ofs, unsigned int n_bits,
const struct flow *flow)
{
- const struct nxm_field *src = nxm_field_lookup(ntohl(src_header));
+ uint32_t src_header = ntohl(src_header_);
+ const struct mf_field *src = mf_from_nxm_header(src_header);
if (!n_bits) {
VLOG_WARN_RL(&rl, "zero bit source field");
- } else if (!field_ok(src, flow, ofs + n_bits)) {
+ } else if (NXM_HASMASK(src_header) || !field_ok(src, flow, ofs + n_bits)) {
VLOG_WARN_RL(&rl, "invalid source field");
} else {
return 0;
/* Given a flow, checks that the destination field represented by 'dst_header'
* in the range ['ofs', 'ofs' + 'n_bits') is valid. */
int
-nxm_dst_check(ovs_be32 dst_header, unsigned int ofs, unsigned int n_bits,
+nxm_dst_check(ovs_be32 dst_header_, unsigned int ofs, unsigned int n_bits,
const struct flow *flow)
{
- const struct nxm_field *dst = nxm_field_lookup(ntohl(dst_header));
+ uint32_t dst_header = ntohl(dst_header_);
+ const struct mf_field *dst = mf_from_nxm_header(dst_header);
if (!n_bits) {
VLOG_WARN_RL(&rl, "zero bit destination field");
- } else if (!field_ok(dst, flow, ofs + n_bits)) {
+ } else if (NXM_HASMASK(dst_header) || !field_ok(dst, flow, ofs + n_bits)) {
VLOG_WARN_RL(&rl, "invalid destination field");
} else if (!dst->writable) {
VLOG_WARN_RL(&rl, "destination field is not writable");
\f
/* nxm_execute_reg_move(), nxm_execute_reg_load(). */
-static uint64_t
-nxm_read_field(const struct nxm_field *src, const struct flow *flow)
+static void
+bitwise_copy(const void *src_, unsigned int src_len, unsigned int src_ofs,
+ void *dst_, unsigned int dst_len, unsigned int dst_ofs,
+ unsigned int n_bits)
{
- switch (src->index) {
- case NFI_NXM_OF_IN_PORT:
- return flow->in_port;
-
- case NFI_NXM_OF_ETH_DST:
- return eth_addr_to_uint64(flow->dl_dst);
-
- case NFI_NXM_OF_ETH_SRC:
- return eth_addr_to_uint64(flow->dl_src);
-
- case NFI_NXM_OF_ETH_TYPE:
- return ntohs(ofputil_dl_type_to_openflow(flow->dl_type));
-
- case NFI_NXM_OF_VLAN_TCI:
- return ntohs(flow->vlan_tci);
-
- case NFI_NXM_OF_IP_TOS:
- return flow->nw_tos & IP_DSCP_MASK;
-
- case NFI_NXM_NX_IP_ECN:
- return flow->nw_tos & IP_ECN_MASK;
-
- case NFI_NXM_NX_IP_TTL:
- return flow->nw_ttl;
-
- case NFI_NXM_NX_IP_FRAG:
- return flow->nw_frag;
-
- case NFI_NXM_OF_IP_PROTO:
- case NFI_NXM_OF_ARP_OP:
- return flow->nw_proto;
-
- case NFI_NXM_OF_IP_SRC:
- case NFI_NXM_OF_ARP_SPA:
- return ntohl(flow->nw_src);
-
- case NFI_NXM_OF_IP_DST:
- case NFI_NXM_OF_ARP_TPA:
- return ntohl(flow->nw_dst);
-
- case NFI_NXM_OF_TCP_SRC:
- case NFI_NXM_OF_UDP_SRC:
- return ntohs(flow->tp_src);
-
- case NFI_NXM_OF_TCP_DST:
- case NFI_NXM_OF_UDP_DST:
- return ntohs(flow->tp_dst);
-
- case NFI_NXM_OF_ICMP_TYPE:
- case NFI_NXM_NX_ICMPV6_TYPE:
- return ntohs(flow->tp_src) & 0xff;
-
- case NFI_NXM_OF_ICMP_CODE:
- case NFI_NXM_NX_ICMPV6_CODE:
- return ntohs(flow->tp_dst) & 0xff;
-
- case NFI_NXM_NX_TUN_ID:
- return ntohll(flow->tun_id);
-
- case NFI_NXM_NX_IPV6_LABEL:
- return ntohl(flow->ipv6_label);
-
-#define NXM_READ_REGISTER(IDX) \
- case NFI_NXM_NX_REG##IDX: \
- return flow->regs[IDX]; \
- case NFI_NXM_NX_REG##IDX##_W: \
- NOT_REACHED();
-
- NXM_READ_REGISTER(0);
-#if FLOW_N_REGS >= 2
- NXM_READ_REGISTER(1);
-#endif
-#if FLOW_N_REGS >= 3
- NXM_READ_REGISTER(2);
-#endif
-#if FLOW_N_REGS >= 4
- NXM_READ_REGISTER(3);
-#endif
-#if FLOW_N_REGS >= 5
- NXM_READ_REGISTER(4);
-#endif
-#if FLOW_N_REGS > 5
-#error
-#endif
-
- case NFI_NXM_NX_ARP_SHA:
- case NFI_NXM_NX_ND_SLL:
- return eth_addr_to_uint64(flow->arp_sha);
-
- case NFI_NXM_NX_ARP_THA:
- case NFI_NXM_NX_ND_TLL:
- return eth_addr_to_uint64(flow->arp_tha);
-
- case NFI_NXM_NX_TUN_ID_W:
- case NFI_NXM_OF_ETH_DST_W:
- case NFI_NXM_OF_VLAN_TCI_W:
- case NFI_NXM_OF_IP_SRC_W:
- case NFI_NXM_OF_IP_DST_W:
- case NFI_NXM_OF_ARP_SPA_W:
- case NFI_NXM_OF_ARP_TPA_W:
- case NFI_NXM_NX_IPV6_SRC:
- case NFI_NXM_NX_IPV6_SRC_W:
- case NFI_NXM_NX_IPV6_DST:
- case NFI_NXM_NX_IPV6_DST_W:
- case NFI_NXM_NX_IP_FRAG_W:
- case NFI_NXM_NX_ND_TARGET:
- case N_NXM_FIELDS:
- NOT_REACHED();
- }
+ const uint8_t *src = src_;
+ uint8_t *dst = dst_;
+
+ src += src_len - (src_ofs / 8 + 1);
+ src_ofs %= 8;
+
+ dst += dst_len - (dst_ofs / 8 + 1);
+ dst_ofs %= 8;
- NOT_REACHED();
+ if (src_ofs == 0 && dst_ofs == 0) {
+ unsigned int n_bytes = n_bits / 8;
+ if (n_bytes) {
+ dst -= n_bytes - 1;
+ src -= n_bytes - 1;
+ memcpy(dst, src, n_bytes);
+
+ n_bits %= 8;
+ src--;
+ dst--;
+ }
+ if (n_bits) {
+ uint8_t mask = (1 << n_bits) - 1;
+ *dst = (*dst & ~mask) | (*src & mask);
+ }
+ } else {
+ while (n_bits > 0) {
+ unsigned int max_copy = 8 - MAX(src_ofs, dst_ofs);
+ unsigned int chunk = MIN(n_bits, max_copy);
+ uint8_t mask = ((1 << chunk) - 1) << dst_ofs;
+
+ *dst &= ~mask;
+ *dst |= ((*src >> src_ofs) << dst_ofs) & mask;
+
+ src_ofs += chunk;
+ if (src_ofs == 8) {
+ src--;
+ src_ofs = 0;
+ }
+ dst_ofs += chunk;
+ if (dst_ofs == 8) {
+ dst--;
+ dst_ofs = 0;
+ }
+ n_bits -= chunk;
+ }
+ }
}
/* Returns the value of the NXM field corresponding to 'header' at 'ofs_nbits'
nxm_read_field_bits(ovs_be32 header, ovs_be16 ofs_nbits,
const struct flow *flow)
{
- int n_bits = nxm_decode_n_bits(ofs_nbits);
- int ofs = nxm_decode_ofs(ofs_nbits);
- uint64_t mask, data;
-
- mask = n_bits == 64 ? UINT64_MAX : (UINT64_C(1) << n_bits) - 1;
- data = nxm_read_field(nxm_field_lookup(ntohl(header)), flow);
- data = (data >> ofs) & mask;
-
- return data;
-}
-
-static void
-nxm_write_field(const struct nxm_field *dst, struct flow *flow,
- uint64_t new_value)
-{
- switch (dst->index) {
- case NFI_NXM_OF_ETH_DST:
- eth_addr_from_uint64(new_value, flow->dl_dst);
- break;
-
- case NFI_NXM_OF_ETH_SRC:
- eth_addr_from_uint64(new_value, flow->dl_src);
- break;
-
- case NFI_NXM_OF_VLAN_TCI:
- flow->vlan_tci = htons(new_value);
- break;
-
- case NFI_NXM_NX_TUN_ID:
- flow->tun_id = htonll(new_value);
- break;
-
-#define NXM_WRITE_REGISTER(IDX) \
- case NFI_NXM_NX_REG##IDX: \
- flow->regs[IDX] = new_value; \
- break; \
- case NFI_NXM_NX_REG##IDX##_W: \
- NOT_REACHED();
-
- NXM_WRITE_REGISTER(0);
-#if FLOW_N_REGS >= 2
- NXM_WRITE_REGISTER(1);
-#endif
-#if FLOW_N_REGS >= 3
- NXM_WRITE_REGISTER(2);
-#endif
-#if FLOW_N_REGS >= 4
- NXM_WRITE_REGISTER(3);
-#endif
-#if FLOW_N_REGS >= 5
- NXM_WRITE_REGISTER(4);
-#endif
-#if FLOW_N_REGS > 5
-#error
-#endif
-
- case NFI_NXM_OF_IP_TOS:
- flow->nw_tos &= ~IP_DSCP_MASK;
- flow->nw_tos |= new_value & IP_DSCP_MASK;
- break;
-
- case NFI_NXM_NX_IP_ECN:
- flow->nw_tos &= ~IP_ECN_MASK;
- flow->nw_tos |= new_value & IP_ECN_MASK;
- break;
-
- case NFI_NXM_NX_IP_TTL:
- flow->nw_ttl = new_value;
- break;
-
- case NFI_NXM_NX_IP_FRAG:
- flow->nw_frag = new_value;
- break;
-
- case NFI_NXM_OF_IP_SRC:
- flow->nw_src = htonl(new_value);
- break;
-
- case NFI_NXM_OF_IP_DST:
- flow->nw_dst = htonl(new_value);
- break;
-
- case NFI_NXM_NX_IPV6_LABEL:
- flow->ipv6_label = htonl(new_value);
- break;
-
- case NFI_NXM_OF_TCP_SRC:
- case NFI_NXM_OF_UDP_SRC:
- flow->tp_src = htons(new_value);
- break;
-
- case NFI_NXM_OF_TCP_DST:
- case NFI_NXM_OF_UDP_DST:
- flow->tp_dst = htons(new_value);
- break;
-
- case NFI_NXM_OF_IN_PORT:
- case NFI_NXM_OF_ETH_TYPE:
- case NFI_NXM_OF_IP_PROTO:
- case NFI_NXM_OF_ARP_OP:
- case NFI_NXM_OF_ARP_SPA:
- case NFI_NXM_OF_ARP_TPA:
- case NFI_NXM_OF_ICMP_TYPE:
- case NFI_NXM_OF_ICMP_CODE:
- case NFI_NXM_NX_TUN_ID_W:
- case NFI_NXM_OF_ETH_DST_W:
- case NFI_NXM_OF_VLAN_TCI_W:
- case NFI_NXM_OF_IP_SRC_W:
- case NFI_NXM_OF_IP_DST_W:
- case NFI_NXM_OF_ARP_SPA_W:
- case NFI_NXM_OF_ARP_TPA_W:
- case NFI_NXM_NX_ARP_SHA:
- case NFI_NXM_NX_ARP_THA:
- case NFI_NXM_NX_IPV6_SRC:
- case NFI_NXM_NX_IPV6_SRC_W:
- case NFI_NXM_NX_IPV6_DST:
- case NFI_NXM_NX_IPV6_DST_W:
- case NFI_NXM_NX_IP_FRAG_W:
- case NFI_NXM_NX_ICMPV6_TYPE:
- case NFI_NXM_NX_ICMPV6_CODE:
- case NFI_NXM_NX_ND_TARGET:
- case NFI_NXM_NX_ND_SLL:
- case NFI_NXM_NX_ND_TLL:
- case N_NXM_FIELDS:
- NOT_REACHED();
- }
+ const struct mf_field *field = mf_from_nxm_header(ntohl(header));
+ union mf_value value;
+ union mf_value bits;
+
+ mf_get_value(field, flow, &value);
+ bits.be64 = htonll(0);
+ bitwise_copy(&value, field->n_bytes, nxm_decode_ofs(ofs_nbits),
+ &bits, sizeof bits.be64, 0,
+ nxm_decode_n_bits(ofs_nbits));
+ return ntohll(bits.be64);
}
void
nxm_execute_reg_move(const struct nx_action_reg_move *action,
struct flow *flow)
{
- ovs_be16 src_ofs_nbits, dst_ofs_nbits;
- uint64_t src_data;
- int n_bits;
-
- n_bits = ntohs(action->n_bits);
- src_ofs_nbits = nxm_encode_ofs_nbits(ntohs(action->src_ofs), n_bits);
- dst_ofs_nbits = nxm_encode_ofs_nbits(ntohs(action->dst_ofs), n_bits);
-
- src_data = nxm_read_field_bits(action->src, src_ofs_nbits, flow);
- nxm_reg_load(action->dst, dst_ofs_nbits, src_data, flow);
+ const struct mf_field *src = mf_from_nxm_header(ntohl(action->src));
+ const struct mf_field *dst = mf_from_nxm_header(ntohl(action->dst));
+ union mf_value src_value;
+ union mf_value dst_value;
+
+ mf_get_value(dst, flow, &dst_value);
+ mf_get_value(src, flow, &src_value);
+ bitwise_copy(&src_value, src->n_bytes, ntohs(action->src_ofs),
+ &dst_value, dst->n_bytes, ntohs(action->dst_ofs),
+ ntohs(action->n_bits));
+ mf_set_flow_value(dst, &dst_value, flow);
}
void
nxm_reg_load(ovs_be32 dst_header, ovs_be16 ofs_nbits, uint64_t src_data,
struct flow *flow)
{
+ const struct mf_field *dst = mf_from_nxm_header(ntohl(dst_header));
int n_bits = nxm_decode_n_bits(ofs_nbits);
int dst_ofs = nxm_decode_ofs(ofs_nbits);
- uint64_t mask = n_bits == 64 ? UINT64_MAX : (UINT64_C(1) << n_bits) - 1;
-
- /* Get remaining bits of the destination field. */
- const struct nxm_field *dst = nxm_field_lookup(ntohl(dst_header));
- uint64_t dst_data = nxm_read_field(dst, flow) & ~(mask << dst_ofs);
-
- /* Get the final value. */
- uint64_t new_data = dst_data | (src_data << dst_ofs);
-
- nxm_write_field(dst, flow, new_data);
+ union mf_value dst_value;
+ union mf_value src_value;
+
+ mf_get_value(dst, flow, &dst_value);
+ src_value.be64 = htonll(src_data);
+ bitwise_copy(&src_value, sizeof src_value.be64, 0,
+ &dst_value, dst->n_bytes, dst_ofs,
+ n_bits);
+ mf_set_flow_value(dst, &dst_value, flow);
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff