/*
- * Copyright (c) 2011, 2012, 2013, 2014 Nicira, Inc.
+ * Copyright (c) 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "random.h"
#include "shash.h"
#include "socket-util.h"
+#include "tun-metadata.h"
#include "unaligned.h"
#include "util.h"
#include "openvswitch/vlog.h"
* controller and so there's not much point in showing a lot of them. */
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+#define MF_VALUE_EXACT_8 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+#define MF_VALUE_EXACT_16 MF_VALUE_EXACT_8, MF_VALUE_EXACT_8
+#define MF_VALUE_EXACT_32 MF_VALUE_EXACT_16, MF_VALUE_EXACT_16
+#define MF_VALUE_EXACT_64 MF_VALUE_EXACT_32, MF_VALUE_EXACT_32
+#define MF_VALUE_EXACT_128 MF_VALUE_EXACT_64, MF_VALUE_EXACT_64
+#define MF_VALUE_EXACT_INITIALIZER { .tun_metadata = { MF_VALUE_EXACT_128 } }
+
+const union mf_value exact_match_mask = MF_VALUE_EXACT_INITIALIZER;
+
static void nxm_init(void);
/* Returns the field with the given 'name', or a null pointer if no field has
pthread_once(&once, nxm_do_init);
}
+/* Consider the two value/mask pairs 'a_value/a_mask' and 'b_value/b_mask' as
+ * restrictions on a field's value. Then, this function initializes
+ * 'dst_value/dst_mask' such that it combines the restrictions of both pairs.
+ * This is not always possible, i.e. if one pair insists on a value of 0 in
+ * some bit and the other pair insists on a value of 1 in that bit. This
+ * function returns false in a case where the combined restriction is
+ * impossible (in which case 'dst_value/dst_mask' is not fully initialized),
+ * true otherwise.
+ *
+ * (As usually true for value/mask pairs in OVS, any 1-bit in a value must have
+ * a corresponding 1-bit in its mask.) */
+bool
+mf_subvalue_intersect(const union mf_subvalue *a_value,
+ const union mf_subvalue *a_mask,
+ const union mf_subvalue *b_value,
+ const union mf_subvalue *b_mask,
+ union mf_subvalue *dst_value,
+ union mf_subvalue *dst_mask)
+{
+ for (int i = 0; i < ARRAY_SIZE(a_value->be64); i++) {
+ ovs_be64 av = a_value->be64[i];
+ ovs_be64 am = a_mask->be64[i];
+ ovs_be64 bv = b_value->be64[i];
+ ovs_be64 bm = b_mask->be64[i];
+ ovs_be64 *dv = &dst_value->be64[i];
+ ovs_be64 *dm = &dst_mask->be64[i];
+
+ if ((av ^ bv) & (am & bm)) {
+ return false;
+ }
+ *dv = av | bv;
+ *dm = am | bm;
+ }
+ return true;
+}
+
+/* Returns the "number of bits" in 'v', e.g. 1 if only the lowest-order bit is
+ * set, 2 if the second-lowest-order bit is set, and so on. */
+int
+mf_subvalue_width(const union mf_subvalue *v)
+{
+ return 1 + bitwise_rscan(v, sizeof *v, true, sizeof *v * 8 - 1, -1);
+}
+
+/* For positive 'n', shifts the bits in 'value' 'n' bits to the left, and for
+ * negative 'n', shifts the bits '-n' bits to the right. */
+void
+mf_subvalue_shift(union mf_subvalue *value, int n)
+{
+ if (n) {
+ union mf_subvalue tmp;
+ memset(&tmp, 0, sizeof tmp);
+
+ if (n > 0 && n < 8 * sizeof tmp) {
+ bitwise_copy(value, sizeof *value, 0,
+ &tmp, sizeof tmp, n,
+ 8 * sizeof tmp - n);
+ } else if (n < 0 && n > -8 * sizeof tmp) {
+ bitwise_copy(value, sizeof *value, -n,
+ &tmp, sizeof tmp, 0,
+ 8 * sizeof tmp + n);
+ }
+ *value = tmp;
+ }
+}
+
+/* Appends a formatted representation of 'sv' to 's'. */
+void
+mf_subvalue_format(const union mf_subvalue *sv, struct ds *s)
+{
+ ds_put_hex(s, sv, sizeof *sv);
+}
+
/* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc'
* specifies at least one bit in the field.
*
return !wc->masks.tunnel.ip_src;
case MFF_TUN_DST:
return !wc->masks.tunnel.ip_dst;
+ case MFF_TUN_IPV6_SRC:
+ return ipv6_mask_is_any(&wc->masks.tunnel.ipv6_src);
+ case MFF_TUN_IPV6_DST:
+ return ipv6_mask_is_any(&wc->masks.tunnel.ipv6_dst);
case MFF_TUN_ID:
+ return !wc->masks.tunnel.tun_id;
case MFF_TUN_TOS:
+ return !wc->masks.tunnel.ip_tos;
case MFF_TUN_TTL:
+ return !wc->masks.tunnel.ip_ttl;
case MFF_TUN_FLAGS:
- return !wc->masks.tunnel.tun_id;
+ return !(wc->masks.tunnel.flags & FLOW_TNL_PUB_F_MASK);
case MFF_TUN_GBP_ID:
return !wc->masks.tunnel.gbp_id;
case MFF_TUN_GBP_FLAGS:
return !wc->masks.tunnel.gbp_flags;
+ CASE_MFF_TUN_METADATA:
+ return !ULLONG_GET(wc->masks.tunnel.metadata.present.map,
+ mf->id - MFF_TUN_METADATA0);
case MFF_METADATA:
return !wc->masks.metadata;
case MFF_IN_PORT:
return !wc->masks.skb_priority;
case MFF_PKT_MARK:
return !wc->masks.pkt_mark;
+ case MFF_CT_STATE:
+ return !wc->masks.ct_state;
+ case MFF_CT_ZONE:
+ return !wc->masks.ct_zone;
+ case MFF_CT_MARK:
+ return !wc->masks.ct_mark;
+ case MFF_CT_LABEL:
+ return ovs_u128_is_zero(&wc->masks.ct_label);
CASE_MFF_REGS:
return !wc->masks.regs[mf->id - MFF_REG0];
CASE_MFF_XREGS:
return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK));
case MFF_MPLS_BOS:
return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK));
+ case MFF_MPLS_TTL:
+ return !(wc->masks.mpls_lse[0] & htonl(MPLS_TTL_MASK));
case MFF_IPV4_SRC:
return !wc->masks.nw_src;
* This is only ever called for writeable 'mf's, but we do not make the
* distinction here. */
void
-mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask)
+mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow_wildcards *wc)
{
- static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER;
-
- mf_set_flow_value(mf, &exact_match_mask, mask);
+ mf_set_flow_value(mf, &exact_match_mask, &wc->masks);
switch (mf->prereqs) {
case MFP_ND:
case MFP_ND_SOLICIT:
case MFP_ND_ADVERT:
- mask->tp_src = OVS_BE16_MAX;
- mask->tp_dst = OVS_BE16_MAX;
+ WC_MASK_FIELD(wc, tp_src);
+ WC_MASK_FIELD(wc, tp_dst);
/* Fall through. */
case MFP_TCP:
case MFP_UDP:
case MFP_ICMPV4:
case MFP_ICMPV6:
/* nw_frag always unwildcarded. */
- mask->nw_proto = 0xff;
+ WC_MASK_FIELD(wc, nw_proto);
/* Fall through. */
case MFP_ARP:
case MFP_IPV4:
case MFP_IPV6:
case MFP_MPLS:
case MFP_IP_ANY:
- mask->dl_type = OVS_BE16_MAX;
+ /* dl_type always unwildcarded. */
break;
case MFP_VLAN_VID:
- mask->vlan_tci |= htons(VLAN_CFI);
+ WC_MASK_FIELD_MASK(wc, vlan_tci, htons(VLAN_CFI));
break;
case MFP_NONE:
break;
case MFF_TUN_ID:
case MFF_TUN_SRC:
case MFF_TUN_DST:
+ case MFF_TUN_IPV6_SRC:
+ case MFF_TUN_IPV6_DST:
case MFF_TUN_TOS:
case MFF_TUN_TTL:
- case MFF_TUN_FLAGS:
case MFF_TUN_GBP_ID:
case MFF_TUN_GBP_FLAGS:
+ CASE_MFF_TUN_METADATA:
case MFF_METADATA:
case MFF_IN_PORT:
case MFF_SKB_PRIORITY:
case MFF_PKT_MARK:
+ case MFF_CT_ZONE:
+ case MFF_CT_MARK:
+ case MFF_CT_LABEL:
CASE_MFF_REGS:
CASE_MFF_XREGS:
case MFF_ETH_SRC:
case MFF_ETH_DST:
case MFF_ETH_TYPE:
case MFF_VLAN_TCI:
+ case MFF_MPLS_TTL:
case MFF_IPV4_SRC:
case MFF_IPV4_DST:
case MFF_IPV6_SRC:
case MFF_MPLS_BOS:
return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT));
+ case MFF_TUN_FLAGS:
+ return !(value->be16 & ~htons(FLOW_TNL_PUB_F_MASK));
+
+ case MFF_CT_STATE:
+ return !(value->be32 & ~htonl(CS_SUPPORTED_MASK));
+
case MFF_N_IDS:
default:
OVS_NOT_REACHED();
case MFF_TUN_DST:
value->be32 = flow->tunnel.ip_dst;
break;
+ case MFF_TUN_IPV6_SRC:
+ value->ipv6 = flow->tunnel.ipv6_src;
+ break;
+ case MFF_TUN_IPV6_DST:
+ value->ipv6 = flow->tunnel.ipv6_dst;
+ break;
case MFF_TUN_FLAGS:
- value->be16 = htons(flow->tunnel.flags);
+ value->be16 = htons(flow->tunnel.flags & FLOW_TNL_PUB_F_MASK);
break;
case MFF_TUN_GBP_ID:
value->be16 = flow->tunnel.gbp_id;
case MFF_TUN_TOS:
value->u8 = flow->tunnel.ip_tos;
break;
+ CASE_MFF_TUN_METADATA:
+ tun_metadata_read(&flow->tunnel, mf, value);
+ break;
case MFF_METADATA:
value->be64 = flow->metadata;
value->be32 = htonl(flow->pkt_mark);
break;
+ case MFF_CT_STATE:
+ value->be32 = htonl(flow->ct_state);
+ break;
+
+ case MFF_CT_ZONE:
+ value->be16 = htons(flow->ct_zone);
+ break;
+
+ case MFF_CT_MARK:
+ value->be32 = htonl(flow->ct_mark);
+ break;
+
+ case MFF_CT_LABEL:
+ value->be128 = hton128(flow->ct_label);
+ break;
+
CASE_MFF_REGS:
value->be32 = htonl(flow->regs[mf->id - MFF_REG0]);
break;
break;
case MFF_ETH_SRC:
- memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN);
+ value->mac = flow->dl_src;
break;
case MFF_ETH_DST:
- memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN);
+ value->mac = flow->dl_dst;
break;
case MFF_ETH_TYPE:
value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]);
break;
+ case MFF_MPLS_TTL:
+ value->u8 = mpls_lse_to_ttl(flow->mpls_lse[0]);
+ break;
+
case MFF_IPV4_SRC:
value->be32 = flow->nw_src;
break;
case MFF_ARP_SHA:
case MFF_ND_SLL:
- memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN);
+ value->mac = flow->arp_sha;
break;
case MFF_ARP_THA:
case MFF_ND_TLL:
- memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN);
+ value->mac = flow->arp_tha;
break;
case MFF_TCP_SRC:
/* Makes 'match' match field 'mf' exactly, with the value matched taken from
* 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s
- * prerequisites. */
+ * prerequisites.
+ *
+ * If non-NULL, 'err_str' returns a malloc'ed string describing any errors
+ * with the request or NULL if there is no error. The caller is reponsible
+ * for freeing the string. */
void
mf_set_value(const struct mf_field *mf,
- const union mf_value *value, struct match *match)
+ const union mf_value *value, struct match *match, char **err_str)
{
+ if (err_str) {
+ *err_str = NULL;
+ }
+
switch (mf->id) {
case MFF_DP_HASH:
match_set_dp_hash(match, ntohl(value->be32));
case MFF_TUN_DST:
match_set_tun_dst(match, value->be32);
break;
+ case MFF_TUN_IPV6_SRC:
+ match_set_tun_ipv6_src(match, &value->ipv6);
+ break;
+ case MFF_TUN_IPV6_DST:
+ match_set_tun_ipv6_dst(match, &value->ipv6);
+ break;
case MFF_TUN_FLAGS:
match_set_tun_flags(match, ntohs(value->be16));
break;
case MFF_TUN_TTL:
match_set_tun_ttl(match, value->u8);
break;
+ CASE_MFF_TUN_METADATA:
+ tun_metadata_set_match(mf, value, NULL, match, err_str);
+ break;
case MFF_METADATA:
match_set_metadata(match, value->be64);
match_set_pkt_mark(match, ntohl(value->be32));
break;
+ case MFF_CT_STATE:
+ match_set_ct_state(match, ntohl(value->be32));
+ break;
+
+ case MFF_CT_ZONE:
+ match_set_ct_zone(match, ntohs(value->be16));
+ break;
+
+ case MFF_CT_MARK:
+ match_set_ct_mark(match, ntohl(value->be32));
+ break;
+
+ case MFF_CT_LABEL:
+ match_set_ct_label(match, ntoh128(value->be128));
+ break;
+
CASE_MFF_REGS:
match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32));
break;
match_set_mpls_bos(match, 0, value->u8);
break;
+ case MFF_MPLS_TTL:
+ match_set_mpls_ttl(match, 0, value->u8);
+ break;
+
case MFF_IPV4_SRC:
match_set_nw_src(match, value->be32);
break;
void
mf_mask_field(const struct mf_field *mf, struct flow *mask)
{
- static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER;
-
/* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan()
* as that will be considered as OFP10_VLAN_NONE. So consider it as a
* special case. For the rest, calling mf_set_flow_value() is good
}
}
+static int
+field_len(const struct mf_field *mf, const union mf_value *value_)
+{
+ const uint8_t *value = &value_->u8;
+ int i;
+
+ if (!mf->variable_len) {
+ return mf->n_bytes;
+ }
+
+ if (!value) {
+ return 0;
+ }
+
+ for (i = 0; i < mf->n_bytes; i++) {
+ if (value[i] != 0) {
+ break;
+ }
+ }
+
+ return mf->n_bytes - i;
+}
+
+/* Returns the effective length of the field. For fixed length fields,
+ * this is just the defined length. For variable length fields, it is
+ * the minimum size encoding that retains the same meaning (i.e.
+ * discarding leading zeros).
+ *
+ * 'is_masked' returns (if non-NULL) whether the original contained
+ * a mask. Otherwise, a mask that is the same length as the value
+ * might be misinterpreted as an exact match. */
+int
+mf_field_len(const struct mf_field *mf, const union mf_value *value,
+ const union mf_value *mask, bool *is_masked_)
+{
+ int len, mask_len;
+ bool is_masked = mask && !is_all_ones(mask, mf->n_bytes);
+
+ len = field_len(mf, value);
+ if (is_masked) {
+ mask_len = field_len(mf, mask);
+ len = MAX(len, mask_len);
+ }
+
+ if (is_masked_) {
+ *is_masked_ = is_masked;
+ }
+
+ return len;
+}
+
/* Sets 'flow' member field described by 'mf' to 'value'. The caller is
* responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/
void
case MFF_TUN_DST:
flow->tunnel.ip_dst = value->be32;
break;
+ case MFF_TUN_IPV6_SRC:
+ flow->tunnel.ipv6_src = value->ipv6;
+ break;
+ case MFF_TUN_IPV6_DST:
+ flow->tunnel.ipv6_dst = value->ipv6;
+ break;
case MFF_TUN_FLAGS:
- flow->tunnel.flags = ntohs(value->be16);
+ flow->tunnel.flags = (flow->tunnel.flags & ~FLOW_TNL_PUB_F_MASK) |
+ ntohs(value->be16);
break;
case MFF_TUN_GBP_ID:
flow->tunnel.gbp_id = value->be16;
case MFF_TUN_TTL:
flow->tunnel.ip_ttl = value->u8;
break;
-
+ CASE_MFF_TUN_METADATA:
+ tun_metadata_write(&flow->tunnel, mf, value);
+ break;
case MFF_METADATA:
flow->metadata = value->be64;
break;
flow->pkt_mark = ntohl(value->be32);
break;
+ case MFF_CT_STATE:
+ flow->ct_state = ntohl(value->be32);
+ break;
+
+ case MFF_CT_ZONE:
+ flow->ct_zone = ntohs(value->be16);
+ break;
+
+ case MFF_CT_MARK:
+ flow->ct_mark = ntohl(value->be32);
+ break;
+
+ case MFF_CT_LABEL:
+ flow->ct_label = ntoh128(value->be128);
+ break;
+
CASE_MFF_REGS:
flow->regs[mf->id - MFF_REG0] = ntohl(value->be32);
break;
break;
case MFF_ETH_SRC:
- memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN);
+ flow->dl_src = value->mac;
break;
case MFF_ETH_DST:
- memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN);
+ flow->dl_dst = value->mac;
break;
case MFF_ETH_TYPE:
flow_set_mpls_bos(flow, 0, value->u8);
break;
+ case MFF_MPLS_TTL:
+ flow_set_mpls_ttl(flow, 0, value->u8);
+ break;
+
case MFF_IPV4_SRC:
flow->nw_src = value->be32;
break;
case MFF_ARP_SHA:
case MFF_ND_SLL:
- memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN);
+ flow->arp_sha = value->mac;
break;
case MFF_ARP_THA:
case MFF_ND_TLL:
- memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN);
+ flow->arp_tha = value->mac;
break;
case MFF_TCP_SRC:
mf_set_flow_value(field, &tmp, flow);
}
-/* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero.
+bool
+mf_is_tun_metadata(const struct mf_field *mf)
+{
+ return mf->id >= MFF_TUN_METADATA0 &&
+ mf->id < MFF_TUN_METADATA0 + TUN_METADATA_NUM_OPTS;
+}
+
+/* Returns true if 'mf' has previously been set in 'flow', false if
+ * it contains a non-default value.
*
* The caller is responsible for ensuring that 'flow' meets 'mf''s
* prerequisites. */
bool
-mf_is_zero(const struct mf_field *mf, const struct flow *flow)
+mf_is_set(const struct mf_field *mf, const struct flow *flow)
{
- union mf_value value;
+ if (!mf_is_tun_metadata(mf)) {
+ union mf_value value;
- mf_get_value(mf, flow, &value);
- return is_all_zeros(&value, mf->n_bytes);
+ mf_get_value(mf, flow, &value);
+ return !is_all_zeros(&value, mf->n_bytes);
+ } else {
+ return ULLONG_GET(flow->tunnel.metadata.present.map,
+ mf->id - MFF_TUN_METADATA0);
+ }
}
/* Makes 'match' wildcard field 'mf'.
*
* The caller is responsible for ensuring that 'match' meets 'mf''s
- * prerequisites. */
+ * prerequisites.
+ *
+ * If non-NULL, 'err_str' returns a malloc'ed string describing any errors
+ * with the request or NULL if there is no error. The caller is reponsible
+ * for freeing the string. */
void
-mf_set_wild(const struct mf_field *mf, struct match *match)
+mf_set_wild(const struct mf_field *mf, struct match *match, char **err_str)
{
+ if (err_str) {
+ *err_str = NULL;
+ }
+
switch (mf->id) {
case MFF_DP_HASH:
match->flow.dp_hash = 0;
case MFF_TUN_DST:
match_set_tun_dst_masked(match, htonl(0), htonl(0));
break;
+ case MFF_TUN_IPV6_SRC:
+ memset(&match->wc.masks.tunnel.ipv6_src, 0,
+ sizeof match->wc.masks.tunnel.ipv6_src);
+ memset(&match->flow.tunnel.ipv6_src, 0,
+ sizeof match->flow.tunnel.ipv6_src);
+ break;
+ case MFF_TUN_IPV6_DST:
+ memset(&match->wc.masks.tunnel.ipv6_dst, 0,
+ sizeof match->wc.masks.tunnel.ipv6_dst);
+ memset(&match->flow.tunnel.ipv6_dst, 0,
+ sizeof match->flow.tunnel.ipv6_dst);
+ break;
case MFF_TUN_FLAGS:
match_set_tun_flags_masked(match, 0, 0);
break;
case MFF_TUN_TTL:
match_set_tun_ttl_masked(match, 0, 0);
break;
+ CASE_MFF_TUN_METADATA:
+ tun_metadata_set_match(mf, NULL, NULL, match, err_str);
+ break;
case MFF_METADATA:
match_set_metadata_masked(match, htonll(0), htonll(0));
match->wc.masks.pkt_mark = 0;
break;
+ case MFF_CT_STATE:
+ match->flow.ct_state = 0;
+ match->wc.masks.ct_state = 0;
+ break;
+
+ case MFF_CT_ZONE:
+ match->flow.ct_zone = 0;
+ match->wc.masks.ct_zone = 0;
+ break;
+
+ case MFF_CT_MARK:
+ match->flow.ct_mark = 0;
+ match->wc.masks.ct_mark = 0;
+ break;
+
+ case MFF_CT_LABEL:
+ memset(&match->flow.ct_label, 0, sizeof(match->flow.ct_label));
+ memset(&match->wc.masks.ct_label, 0, sizeof(match->wc.masks.ct_label));
+ break;
+
CASE_MFF_REGS:
match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0);
break;
break;
case MFF_ETH_SRC:
- memset(match->flow.dl_src, 0, ETH_ADDR_LEN);
- memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN);
+ match->flow.dl_src = eth_addr_zero;
+ match->wc.masks.dl_src = eth_addr_zero;
break;
case MFF_ETH_DST:
- memset(match->flow.dl_dst, 0, ETH_ADDR_LEN);
- memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN);
+ match->flow.dl_dst = eth_addr_zero;
+ match->wc.masks.dl_dst = eth_addr_zero;
break;
case MFF_ETH_TYPE:
match_set_any_mpls_bos(match, 0);
break;
+ case MFF_MPLS_TTL:
+ match_set_any_mpls_ttl(match, 0);
+ break;
+
case MFF_IPV4_SRC:
case MFF_ARP_SPA:
match_set_nw_src_masked(match, htonl(0), htonl(0));
break;
case MFF_IP_FRAG:
- match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK;
+ match->wc.masks.nw_frag &= ~FLOW_NW_FRAG_MASK;
match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK;
break;
case MFF_ARP_SHA:
case MFF_ND_SLL:
- memset(match->flow.arp_sha, 0, ETH_ADDR_LEN);
- memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN);
+ match->flow.arp_sha = eth_addr_zero;
+ match->wc.masks.arp_sha = eth_addr_zero;
break;
case MFF_ARP_THA:
case MFF_ND_TLL:
- memset(match->flow.arp_tha, 0, ETH_ADDR_LEN);
- memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN);
+ match->flow.arp_tha = eth_addr_zero;
+ match->wc.masks.arp_tha = eth_addr_zero;
break;
case MFF_TCP_SRC:
* call is equivalent to mf_set_wild(mf, match).
*
* 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller
- * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */
-enum ofputil_protocol
+ * is responsible for ensuring that 'match' meets 'mf''s prerequisites.
+ *
+ * If non-NULL, 'err_str' returns a malloc'ed string describing any errors
+ * with the request or NULL if there is no error. The caller is reponsible
+ * for freeing the string.
+ *
+ * Return a set of enum ofputil_protocol bits (as an uint32_t to avoid circular
+ * dependency on enum ofputil_protocol definition) indicating which OpenFlow
+ * protocol versions can support this functionality. */
+uint32_t
mf_set(const struct mf_field *mf,
const union mf_value *value, const union mf_value *mask,
- struct match *match)
+ struct match *match, char **err_str)
{
if (!mask || is_all_ones(mask, mf->n_bytes)) {
- mf_set_value(mf, value, match);
+ mf_set_value(mf, value, match, err_str);
return mf->usable_protocols_exact;
- } else if (is_all_zeros(mask, mf->n_bytes)) {
- mf_set_wild(mf, match);
+ } else if (is_all_zeros(mask, mf->n_bytes) && !mf_is_tun_metadata(mf)) {
+ /* Tunnel metadata matches on the existence of the field itself, so
+ * it still needs to be encoded even if the value is wildcarded. */
+ mf_set_wild(mf, match, err_str);
return OFPUTIL_P_ANY;
}
+ if (err_str) {
+ *err_str = NULL;
+ }
+
switch (mf->id) {
+ case MFF_CT_ZONE:
case MFF_RECIRC_ID:
case MFF_CONJ_ID:
case MFF_IN_PORT:
case MFF_MPLS_LABEL:
case MFF_MPLS_TC:
case MFF_MPLS_BOS:
+ case MFF_MPLS_TTL:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_IP_DSCP:
case MFF_TUN_DST:
match_set_tun_dst_masked(match, value->be32, mask->be32);
break;
+ case MFF_TUN_IPV6_SRC:
+ match_set_tun_ipv6_src_masked(match, &value->ipv6, &mask->ipv6);
+ break;
+ case MFF_TUN_IPV6_DST:
+ match_set_tun_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6);
+ break;
case MFF_TUN_FLAGS:
match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16));
break;
case MFF_TUN_TOS:
match_set_tun_tos_masked(match, value->u8, mask->u8);
break;
+ CASE_MFF_TUN_METADATA:
+ tun_metadata_set_match(mf, value, mask, match, err_str);
+ break;
case MFF_METADATA:
match_set_metadata_masked(match, value->be64, mask->be64);
ntohl(mask->be32));
break;
+ case MFF_CT_STATE:
+ match_set_ct_state_masked(match, ntohl(value->be32), ntohl(mask->be32));
+ break;
+
+ case MFF_CT_MARK:
+ match_set_ct_mark_masked(match, ntohl(value->be32), ntohl(mask->be32));
+ break;
+
+ case MFF_CT_LABEL:
+ match_set_ct_label_masked(match, ntoh128(value->be128),
+ mask ? ntoh128(mask->be128) : OVS_U128_MAX);
+ break;
+
case MFF_ETH_DST:
match_set_dl_dst_masked(match, value->mac, mask->mac);
break;
case MFF_IPV6_LABEL:
if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) {
- mf_set_value(mf, value, match);
+ mf_set_value(mf, value, match, err_str);
} else {
match_set_ipv6_label_masked(match, value->be32, mask->be32);
}
mf_from_integer_string(const struct mf_field *mf, const char *s,
uint8_t *valuep, uint8_t *maskp)
{
- unsigned long long int integer, mask;
char *tail;
- int i;
+ const char *err_str = "";
+ int err;
- errno = 0;
- integer = strtoull(s, &tail, 0);
- if (errno || (*tail != '\0' && *tail != '/')) {
+ err = parse_int_string(s, valuep, mf->n_bytes, &tail);
+ if (err || (*tail != '\0' && *tail != '/')) {
+ err_str = "value";
goto syntax_error;
}
if (*tail == '/') {
- mask = strtoull(tail + 1, &tail, 0);
- if (errno || *tail != '\0') {
+ err = parse_int_string(tail + 1, maskp, mf->n_bytes, &tail);
+ if (err || *tail != '\0') {
+ err_str = "mask";
goto syntax_error;
}
} else {
- mask = ULLONG_MAX;
+ memset(maskp, 0xff, mf->n_bytes);
}
- for (i = mf->n_bytes - 1; i >= 0; i--) {
- valuep[i] = integer;
- maskp[i] = mask;
- integer >>= 8;
- mask >>= 8;
- }
- if (integer) {
- return xasprintf("%s: value too large for %u-byte field %s",
- s, mf->n_bytes, mf->name);
- }
return NULL;
syntax_error:
- return xasprintf("%s: bad syntax for %s", s, mf->name);
+ if (err == ERANGE) {
+ return xasprintf("%s: %s too large for %u-byte field %s",
+ s, err_str, mf->n_bytes, mf->name);
+ } else {
+ return xasprintf("%s: bad syntax for %s %s", s, mf->name, err_str);
+ }
}
static char *
mf_from_ethernet_string(const struct mf_field *mf, const char *s,
- uint8_t mac[ETH_ADDR_LEN],
- uint8_t mask[ETH_ADDR_LEN])
+ struct eth_addr *mac, struct eth_addr *mask)
{
int n;
ovs_assert(mf->n_bytes == ETH_ADDR_LEN);
n = -1;
- if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n)
+ if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(*mac), &n)
&& n == strlen(s)) {
- memset(mask, 0xff, ETH_ADDR_LEN);
+ *mask = eth_addr_exact;
return NULL;
}
n = -1;
if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n",
- ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n)
+ ETH_ADDR_SCAN_ARGS(*mac), ETH_ADDR_SCAN_ARGS(*mask), &n)
&& n == strlen(s)) {
return NULL;
}
mf_from_ipv4_string(const struct mf_field *mf, const char *s,
ovs_be32 *ip, ovs_be32 *mask)
{
- int prefix;
-
ovs_assert(mf->n_bytes == sizeof *ip);
-
- if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT,
- IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) {
- /* OK. */
- } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) {
- if (prefix <= 0 || prefix > 32) {
- return xasprintf("%s: network prefix bits not between 0 and "
- "32", s);
- }
- *mask = be32_prefix_mask(prefix);
- } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) {
- *mask = OVS_BE32_MAX;
- } else {
- return xasprintf("%s: invalid IP address", s);
- }
- return NULL;
+ return ip_parse_masked(s, ip, mask);
}
static char *
mf_from_ipv6_string(const struct mf_field *mf, const char *s,
- struct in6_addr *value, struct in6_addr *mask)
+ struct in6_addr *ipv6, struct in6_addr *mask)
{
- char *str = xstrdup(s);
- char *save_ptr = NULL;
- const char *name, *netmask;
- int retval;
-
- ovs_assert(mf->n_bytes == sizeof *value);
-
- name = strtok_r(str, "/", &save_ptr);
- retval = name ? lookup_ipv6(name, value) : EINVAL;
- if (retval) {
- char *err;
-
- err = xasprintf("%s: could not convert to IPv6 address", str);
- free(str);
-
- return err;
- }
-
- netmask = strtok_r(NULL, "/", &save_ptr);
- if (netmask) {
- if (inet_pton(AF_INET6, netmask, mask) != 1) {
- int prefix = atoi(netmask);
- if (prefix <= 0 || prefix > 128) {
- free(str);
- return xasprintf("%s: prefix bits not between 1 and 128", s);
- } else {
- *mask = ipv6_create_mask(prefix);
- }
- }
- } else {
- *mask = in6addr_exact;
- }
- free(str);
-
- return NULL;
+ ovs_assert(mf->n_bytes == sizeof *ipv6);
+ return ipv6_parse_masked(s, ipv6, mask);
}
static char *
"\"yes\", \"first\", \"later\", \"not_first\"", s);
}
-static int
-parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t),
- ovs_be16 *res)
+static char *
+parse_mf_flags(const char *s, const char *(*bit_to_string)(uint32_t),
+ const char *field_name, ovs_be16 *flagsp, ovs_be16 allowed,
+ ovs_be16 *maskp)
{
- uint32_t result = 0;
- char *save_ptr = NULL;
- char *name;
- int rc = 0;
- char *s = xstrdup(s_);
-
- for (name = strtok_r((char *)s, " |", &save_ptr); name;
- name = strtok_r(NULL, " |", &save_ptr)) {
- int name_len;
- unsigned long long int flags;
- uint32_t bit;
-
- if (ovs_scan(name, "%lli", &flags)) {
- result |= flags;
- continue;
- }
- name_len = strlen(name);
- for (bit = 1; bit; bit <<= 1) {
- const char *fname = bit_to_string(bit);
- size_t len;
-
- if (!fname) {
- continue;
- }
-
- len = strlen(fname);
- if (len != name_len) {
- continue;
- }
- if (!strncmp(name, fname, len)) {
- result |= bit;
- break;
- }
- }
+ int err;
+ char *err_str;
+ uint32_t flags, mask;
+
+ err = parse_flags(s, bit_to_string, '\0', field_name, &err_str,
+ &flags, ntohs(allowed), maskp ? &mask : NULL);
+ if (err < 0) {
+ return err_str;
+ }
- if (!bit) {
- rc = -ENOENT;
- goto out;
- }
+ *flagsp = htons(flags);
+ if (maskp) {
+ *maskp = htons(mask);
}
- *res = htons(result);
-out:
- free(s);
- return rc;
+ return NULL;
}
static char *
-mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp)
+mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp)
{
- if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) {
- *maskp = OVS_BE16_MAX;
- return NULL;
- }
-
- return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", "
- "\"csum\", \"key\")", s);
+ return parse_mf_flags(s, packet_tcp_flag_to_string, "TCP", flagsp,
+ TCP_FLAGS_BE16(OVS_BE16_MAX), maskp);
}
static char *
-mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp)
+mf_from_tun_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp)
{
- uint16_t flags = 0;
- uint16_t mask = 0;
- uint16_t bit;
- int n;
+ return parse_mf_flags(s, flow_tun_flag_to_string, "tunnel", flagsp,
+ htons(FLOW_TNL_PUB_F_MASK), maskp);
+}
- if (ovs_scan(s, "%"SCNi16"/%"SCNi16"%n", &flags, &mask, &n) && !s[n]) {
- *flagsp = htons(flags);
- *maskp = htons(mask);
- return NULL;
- }
- if (ovs_scan(s, "%"SCNi16"%n", &flags, &n) && !s[n]) {
- *flagsp = htons(flags);
- *maskp = OVS_BE16_MAX;
- return NULL;
+static char *
+mf_from_ct_state_string(const char *s, ovs_be32 *flagsp, ovs_be32 *maskp)
+{
+ int err;
+ char *err_str;
+ uint32_t flags, mask;
+
+ err = parse_flags(s, ct_state_to_string, '\0', "ct_state", &err_str,
+ &flags, CS_SUPPORTED_MASK, maskp ? &mask : NULL);
+ if (err < 0) {
+ return err_str;
}
- while (*s != '\0') {
- bool set;
- int name_len;
-
- switch (*s) {
- case '+':
- set = true;
- break;
- case '-':
- set = false;
- break;
- default:
- return xasprintf("%s: TCP flag must be preceded by '+' (for SET) "
- "or '-' (NOT SET)", s);
- }
- s++;
-
- name_len = strcspn(s,"+-");
-
- for (bit = 1; bit; bit <<= 1) {
- const char *fname = packet_tcp_flag_to_string(bit);
- size_t len;
-
- if (!fname) {
- continue;
- }
-
- len = strlen(fname);
- if (len != name_len) {
- continue;
- }
- if (!strncmp(s, fname, len)) {
- if (mask & bit) {
- return xasprintf("%s: Each TCP flag can be specified only "
- "once", s);
- }
- if (set) {
- flags |= bit;
- }
- mask |= bit;
- break;
- }
- }
-
- if (!bit) {
- return xasprintf("%s: unknown TCP flag(s)", s);
- }
- s += name_len;
+ *flagsp = htonl(flags);
+ if (maskp) {
+ *maskp = htonl(mask);
}
- *flagsp = htons(flags);
- *maskp = htons(mask);
return NULL;
}
-
/* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns
* NULL if successful, otherwise a malloc()'d string describing the error. */
char *
(uint8_t *) value, (uint8_t *) mask);
break;
+ case MFS_CT_STATE:
+ ovs_assert(mf->n_bytes == sizeof(ovs_be32));
+ error = mf_from_ct_state_string(s, &value->be32, &mask->be32);
+ break;
+
case MFS_ETHERNET:
- error = mf_from_ethernet_string(mf, s, value->mac, mask->mac);
+ error = mf_from_ethernet_string(mf, s, &value->mac, &mask->mac);
break;
case MFS_IPV4:
mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep,
const uint8_t *maskp, struct ds *s)
{
- unsigned long long int integer;
- int i;
-
- ovs_assert(mf->n_bytes <= 8);
-
- integer = 0;
- for (i = 0; i < mf->n_bytes; i++) {
- integer = (integer << 8) | valuep[i];
- }
if (mf->string == MFS_HEXADECIMAL) {
- ds_put_format(s, "%#llx", integer);
+ ds_put_hex(s, valuep, mf->n_bytes);
} else {
- ds_put_format(s, "%lld", integer);
- }
-
- if (maskp) {
- unsigned long long int mask;
+ unsigned long long int integer = 0;
+ int i;
- mask = 0;
+ ovs_assert(mf->n_bytes <= 8);
for (i = 0; i < mf->n_bytes; i++) {
- mask = (mask << 8) | maskp[i];
+ integer = (integer << 8) | valuep[i];
}
+ ds_put_format(s, "%lld", integer);
+ }
+ if (maskp) {
/* I guess we could write the mask in decimal for MFS_DECIMAL but I'm
* not sure that that a bit-mask written in decimal is ever easier to
* understand than the same bit-mask written in hexadecimal. */
- ds_put_format(s, "/%#llx", mask);
+ ds_put_char(s, '/');
+ ds_put_hex(s, maskp, mf->n_bytes);
}
}
}
static void
-mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s)
+mf_format_tnl_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s)
{
- format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|');
+ format_flags_masked(s, NULL, flow_tun_flag_to_string, ntohs(value),
+ ntohs(mask) & FLOW_TNL_PUB_F_MASK, FLOW_TNL_PUB_F_MASK);
}
static void
mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s)
{
format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value),
- TCP_FLAGS(mask));
+ TCP_FLAGS(mask), TCP_FLAGS(OVS_BE16_MAX));
+}
+
+static void
+mf_format_ct_state_string(ovs_be32 value, ovs_be32 mask, struct ds *s)
+{
+ format_flags_masked(s, NULL, ct_state_to_string, ntohl(value),
+ ntohl(mask), UINT16_MAX);
}
/* Appends to 's' a string representation of field 'mf' whose value is in
mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s);
break;
+ case MFS_CT_STATE:
+ mf_format_ct_state_string(value->be32,
+ mask ? mask->be32 : OVS_BE32_MAX, s);
+ break;
+
case MFS_ETHERNET:
- eth_format_masked(value->mac, mask->mac, s);
+ eth_format_masked(value->mac, mask ? &mask->mac : NULL, s);
break;
case MFS_IPV4:
break;
case MFS_IPV6:
- print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL);
+ ipv6_format_masked(&value->ipv6, mask ? &mask->ipv6 : NULL, s);
break;
case MFS_FRAG:
break;
case MFS_TNL_FLAGS:
- mf_format_tnl_flags_string(&value->be16, s);
+ mf_format_tnl_flags_string(value->be16,
+ mask ? mask->be16 : OVS_BE16_MAX, s);
break;
case MFS_TCP_FLAGS:
mf_get(field, match, &value, &mask);
bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits);
bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits);
- mf_set(field, &value, &mask, match);
+ mf_set(field, &value, &mask, match, NULL);
+}
+
+/* 'v' and 'm' correspond to values of 'field'. This function copies them into
+ * 'match' in the correspond positions. */
+void
+mf_mask_subfield(const struct mf_field *field,
+ const union mf_subvalue *v,
+ const union mf_subvalue *m,
+ struct match *match)
+{
+ union mf_value value, mask;
+
+ mf_get(field, match, &value, &mask);
+ bitwise_copy(v, sizeof *v, 0, &value, field->n_bytes, 0, field->n_bits);
+ bitwise_copy(m, sizeof *m, 0, &mask, field->n_bytes, 0, field->n_bits);
+ mf_set(field, &value, &mask, match, NULL);
}
/* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for
projects / cascardo / ovs.git / blobdiff