/*
- * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
error = OFPERR_OFPBMC_BAD_PREREQ;
} else if (!mf_is_all_wild(mf, &match->wc)) {
error = OFPERR_OFPBMC_DUP_FIELD;
- } else if (header != OXM_OF_IN_PORT) {
+ } else {
unsigned int width = mf->n_bytes;
union mf_value value;
mf_set(mf, &value, &mask, match);
}
}
- } else {
- /* Special case for 32bit ports when using OXM,
- * ports are 16 bits wide otherwise. */
- ovs_be32 port_of11;
- uint16_t port;
-
- memcpy(&port_of11, p + 4, sizeof port_of11);
- error = ofputil_port_from_ofp11(port_of11, &port);
- if (!error) {
- match_set_in_port(match, port);
- }
}
/* Check if the match is for a cookie rather than a classifier rule. */
if (NXM_HASMASK(header)) {
memcpy(cookie_mask, p + 4 + width, width);
} else {
- *cookie_mask = htonll(UINT64_MAX);
+ *cookie_mask = OVS_BE64_MAX;
}
error = 0;
}
if (!p) {
VLOG_DBG_RL(&rl, "nx_match length %u, rounded up to a "
"multiple of 8, is longer than space in message (max "
- "length %zu)", match_len, b->size);
+ "length %"PRIu32")", match_len, ofpbuf_size(b));
return OFPERR_OFPBMC_BAD_LEN;
}
}
static enum ofperr
oxm_pull_match__(struct ofpbuf *b, bool strict, struct match *match)
{
- struct ofp11_match_header *omh = b->data;
+ struct ofp11_match_header *omh = ofpbuf_data(b);
uint8_t *p;
uint16_t match_len;
- if (b->size < sizeof *omh) {
+ if (ofpbuf_size(b) < sizeof *omh) {
return OFPERR_OFPBMC_BAD_LEN;
}
if (!p) {
VLOG_DBG_RL(&rl, "oxm length %u, rounded up to a "
"multiple of 8, is longer than space in message (max "
- "length %zu)", match_len, b->size);
+ "length %"PRIu32")", match_len, ofpbuf_size(b));
return OFPERR_OFPBMC_BAD_LEN;
}
strict, match, NULL, NULL);
}
-/* Parses the oxm formatted match description preceeded by a struct ofp11_match
- * in 'b' with length 'match_len'. Stores the result in 'match'.
+/* Parses the oxm formatted match description preceded by a struct
+ * ofp11_match_header in 'b'. Stores the result in 'match'.
*
* Fails with an error when encountering unknown OXM headers.
*
}
/* Behaves the same as oxm_pull_match() with one exception. Skips over unknown
- * PXM headers instead of failing with an error when they are encountered. */
+ * OXM headers instead of failing with an error when they are encountered. */
enum ofperr
oxm_pull_match_loose(struct ofpbuf *b, struct match *match)
{
case 0:
break;
- case CONSTANT_HTONS(UINT16_MAX):
+ case OVS_BE16_MAX:
nxm_put_16(b, header, value);
break;
case 0:
break;
- case CONSTANT_HTONL(UINT32_MAX):
+ case OVS_BE32_MAX:
nxm_put_32(b, header, value);
break;
case 0:
break;
- case CONSTANT_HTONLL(UINT64_MAX):
+ case OVS_BE64_MAX:
nxm_put_64(b, header, value);
break;
}
}
+/* Appends to 'b' a set of OXM or NXM matches for the IPv4 or IPv6 fields in
+ * 'match'. */
static void
-nxm_put_ip(struct ofpbuf *b, const struct match *match,
- uint8_t icmp_proto, uint32_t icmp_type, uint32_t icmp_code,
- bool oxm)
+nxm_put_ip(struct ofpbuf *b, const struct match *match, enum ofp_version oxm)
{
const struct flow *flow = &match->flow;
+ if (flow->dl_type == htons(ETH_TYPE_IP)) {
+ nxm_put_32m(b, mf_oxm_header(MFF_IPV4_SRC, oxm),
+ flow->nw_src, match->wc.masks.nw_src);
+ nxm_put_32m(b, mf_oxm_header(MFF_IPV4_DST, oxm),
+ flow->nw_dst, match->wc.masks.nw_dst);
+ } else {
+ nxm_put_ipv6(b, mf_oxm_header(MFF_IPV6_SRC, oxm),
+ &flow->ipv6_src, &match->wc.masks.ipv6_src);
+ nxm_put_ipv6(b, mf_oxm_header(MFF_IPV6_DST, oxm),
+ &flow->ipv6_dst, &match->wc.masks.ipv6_dst);
+ }
+
nxm_put_frag(b, match);
if (match->wc.masks.nw_tos & IP_DSCP_MASK) {
if (oxm) {
- nxm_put_8(b, OXM_OF_IP_DSCP, flow->nw_tos >> 2);
+ nxm_put_8(b, mf_oxm_header(MFF_IP_DSCP_SHIFTED, oxm),
+ flow->nw_tos >> 2);
} else {
- nxm_put_8(b, NXM_OF_IP_TOS, flow->nw_tos & IP_DSCP_MASK);
+ nxm_put_8(b, mf_oxm_header(MFF_IP_DSCP, oxm),
+ flow->nw_tos & IP_DSCP_MASK);
}
}
if (match->wc.masks.nw_tos & IP_ECN_MASK) {
- nxm_put_8(b, oxm ? OXM_OF_IP_ECN : NXM_NX_IP_ECN,
+ nxm_put_8(b, mf_oxm_header(MFF_IP_ECN, oxm),
flow->nw_tos & IP_ECN_MASK);
}
if (!oxm && match->wc.masks.nw_ttl) {
- nxm_put_8(b, NXM_NX_IP_TTL, flow->nw_ttl);
+ nxm_put_8(b, mf_oxm_header(MFF_IP_TTL, oxm), flow->nw_ttl);
}
+ nxm_put_32m(b, mf_oxm_header(MFF_IPV6_LABEL, oxm),
+ flow->ipv6_label, match->wc.masks.ipv6_label);
+
if (match->wc.masks.nw_proto) {
- nxm_put_8(b, oxm ? OXM_OF_IP_PROTO : NXM_OF_IP_PROTO, flow->nw_proto);
+ nxm_put_8(b, mf_oxm_header(MFF_IP_PROTO, oxm), flow->nw_proto);
if (flow->nw_proto == IPPROTO_TCP) {
- nxm_put_16m(b, oxm ? OXM_OF_TCP_SRC : NXM_OF_TCP_SRC,
+ nxm_put_16m(b, mf_oxm_header(MFF_TCP_SRC, oxm),
flow->tp_src, match->wc.masks.tp_src);
- nxm_put_16m(b, oxm ? OXM_OF_TCP_DST : NXM_OF_TCP_DST,
+ nxm_put_16m(b, mf_oxm_header(MFF_TCP_DST, oxm),
flow->tp_dst, match->wc.masks.tp_dst);
+ nxm_put_16m(b, mf_oxm_header(MFF_TCP_FLAGS, oxm),
+ flow->tcp_flags, match->wc.masks.tcp_flags);
} else if (flow->nw_proto == IPPROTO_UDP) {
- nxm_put_16m(b, oxm ? OXM_OF_UDP_SRC : NXM_OF_UDP_SRC,
+ nxm_put_16m(b, mf_oxm_header(MFF_UDP_SRC, oxm),
flow->tp_src, match->wc.masks.tp_src);
- nxm_put_16m(b, oxm ? OXM_OF_UDP_DST : NXM_OF_UDP_DST,
+ nxm_put_16m(b, mf_oxm_header(MFF_UDP_DST, oxm),
flow->tp_dst, match->wc.masks.tp_dst);
- } else if (flow->nw_proto == icmp_proto) {
+ } else if (flow->nw_proto == IPPROTO_SCTP) {
+ nxm_put_16m(b, mf_oxm_header(MFF_SCTP_SRC, oxm), flow->tp_src,
+ match->wc.masks.tp_src);
+ nxm_put_16m(b, mf_oxm_header(MFF_SCTP_DST, oxm), flow->tp_dst,
+ match->wc.masks.tp_dst);
+ } else if (is_icmpv4(flow)) {
+ if (match->wc.masks.tp_src) {
+ nxm_put_8(b, mf_oxm_header(MFF_ICMPV4_TYPE, oxm),
+ ntohs(flow->tp_src));
+ }
+ if (match->wc.masks.tp_dst) {
+ nxm_put_8(b, mf_oxm_header(MFF_ICMPV4_CODE, oxm),
+ ntohs(flow->tp_dst));
+ }
+ } else if (is_icmpv6(flow)) {
if (match->wc.masks.tp_src) {
- nxm_put_8(b, icmp_type, ntohs(flow->tp_src));
+ nxm_put_8(b, mf_oxm_header(MFF_ICMPV6_TYPE, oxm),
+ ntohs(flow->tp_src));
}
if (match->wc.masks.tp_dst) {
- nxm_put_8(b, icmp_code, ntohs(flow->tp_dst));
+ nxm_put_8(b, mf_oxm_header(MFF_ICMPV6_CODE, oxm),
+ ntohs(flow->tp_dst));
+ }
+ if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
+ flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
+ nxm_put_ipv6(b, mf_oxm_header(MFF_ND_TARGET, oxm),
+ &flow->nd_target, &match->wc.masks.nd_target);
+ if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ND_SLL, oxm),
+ flow->arp_sha, match->wc.masks.arp_sha);
+ }
+ if (flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ND_TLL, oxm),
+ flow->arp_tha, match->wc.masks.arp_tha);
+ }
}
}
}
* Flow Stats Requests messages, a 'cookie' and 'cookie_mask' may be supplied.
* Otherwise, 'cookie_mask' should be zero.
*
+ * Specify 'oxm' as 0 to express the match in NXM format; otherwise, specify
+ * 'oxm' as the OpenFlow version number for the OXM format to use.
+ *
* This function can cause 'b''s data to be reallocated.
*
* Returns the number of bytes appended to 'b', excluding padding.
* If 'match' is a catch-all rule that matches every packet, then this function
* appends nothing to 'b' and returns 0. */
static int
-nx_put_raw(struct ofpbuf *b, bool oxm, const struct match *match,
+nx_put_raw(struct ofpbuf *b, enum ofp_version oxm, const struct match *match,
ovs_be64 cookie, ovs_be64 cookie_mask)
{
const struct flow *flow = &match->flow;
- const size_t start_len = b->size;
+ const size_t start_len = ofpbuf_size(b);
int match_len;
int i;
- BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20);
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 26);
/* Metadata. */
- if (match->wc.masks.in_port) {
- uint16_t in_port = flow->in_port;
+ if (match->wc.masks.dp_hash) {
+ if (!oxm) {
+ nxm_put_32m(b, NXM_NX_DP_HASH, htonl(flow->dp_hash),
+ htonl(match->wc.masks.dp_hash));
+ }
+ }
+
+ if (match->wc.masks.recirc_id) {
+ if (!oxm) {
+ nxm_put_32(b, NXM_NX_RECIRC_ID, htonl(flow->recirc_id));
+ }
+ }
+
+ if (match->wc.masks.in_port.ofp_port) {
+ ofp_port_t in_port = flow->in_port.ofp_port;
if (oxm) {
- nxm_put_32(b, OXM_OF_IN_PORT, ofputil_port_to_ofp11(in_port));
+ nxm_put_32(b, mf_oxm_header(MFF_IN_PORT_OXM, oxm),
+ ofputil_port_to_ofp11(in_port));
} else {
- nxm_put_16(b, NXM_OF_IN_PORT, htons(in_port));
+ nxm_put_16(b, mf_oxm_header(MFF_IN_PORT, oxm),
+ htons(ofp_to_u16(in_port)));
}
}
/* Ethernet. */
- nxm_put_eth_masked(b, oxm ? OXM_OF_ETH_SRC : NXM_OF_ETH_SRC,
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ETH_SRC, oxm),
flow->dl_src, match->wc.masks.dl_src);
- nxm_put_eth_masked(b, oxm ? OXM_OF_ETH_DST : NXM_OF_ETH_DST,
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ETH_DST, oxm),
flow->dl_dst, match->wc.masks.dl_dst);
- nxm_put_16m(b, oxm ? OXM_OF_ETH_TYPE : NXM_OF_ETH_TYPE,
+ nxm_put_16m(b, mf_oxm_header(MFF_ETH_TYPE, oxm),
ofputil_dl_type_to_openflow(flow->dl_type),
match->wc.masks.dl_type);
ovs_be16 mask = match->wc.masks.vlan_tci & VID_CFI_MASK;
if (mask == htons(VLAN_VID_MASK | VLAN_CFI)) {
- nxm_put_16(b, OXM_OF_VLAN_VID, vid);
+ nxm_put_16(b, mf_oxm_header(MFF_VLAN_VID, oxm), vid);
} else if (mask) {
- nxm_put_16m(b, OXM_OF_VLAN_VID, vid, mask);
+ nxm_put_16m(b, mf_oxm_header(MFF_VLAN_VID, oxm), vid, mask);
}
if (vid && vlan_tci_to_pcp(match->wc.masks.vlan_tci)) {
- nxm_put_8(b, OXM_OF_VLAN_PCP, vlan_tci_to_pcp(flow->vlan_tci));
+ nxm_put_8(b, mf_oxm_header(MFF_VLAN_PCP, oxm),
+ vlan_tci_to_pcp(flow->vlan_tci));
}
} else {
- nxm_put_16m(b, NXM_OF_VLAN_TCI, flow->vlan_tci,
+ nxm_put_16m(b, mf_oxm_header(MFF_VLAN_TCI, oxm), flow->vlan_tci,
match->wc.masks.vlan_tci);
}
/* MPLS. */
if (eth_type_mpls(flow->dl_type)) {
- if (match->wc.masks.mpls_lse & htonl(MPLS_TC_MASK)) {
- nxm_put_8(b, OXM_OF_MPLS_TC, mpls_lse_to_tc(flow->mpls_lse));
+ if (match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK)) {
+ nxm_put_8(b, mf_oxm_header(MFF_MPLS_TC, oxm),
+ mpls_lse_to_tc(flow->mpls_lse[0]));
}
- if (match->wc.masks.mpls_lse & htonl(MPLS_BOS_MASK)) {
- nxm_put_8(b, OXM_OF_MPLS_BOS, mpls_lse_to_bos(flow->mpls_lse));
+ if (match->wc.masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)) {
+ nxm_put_8(b, mf_oxm_header(MFF_MPLS_BOS, oxm),
+ mpls_lse_to_bos(flow->mpls_lse[0]));
}
- if (match->wc.masks.mpls_lse & htonl(MPLS_LABEL_MASK)) {
- nxm_put_32(b, OXM_OF_MPLS_LABEL,
- htonl(mpls_lse_to_label(flow->mpls_lse)));
+ if (match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)) {
+ nxm_put_32(b, mf_oxm_header(MFF_MPLS_LABEL, oxm),
+ htonl(mpls_lse_to_label(flow->mpls_lse[0])));
}
}
/* L3. */
- if (flow->dl_type == htons(ETH_TYPE_IP)) {
- /* IP. */
- nxm_put_32m(b, oxm ? OXM_OF_IPV4_SRC : NXM_OF_IP_SRC,
- flow->nw_src, match->wc.masks.nw_src);
- nxm_put_32m(b, oxm ? OXM_OF_IPV4_DST : NXM_OF_IP_DST,
- flow->nw_dst, match->wc.masks.nw_dst);
- nxm_put_ip(b, match, IPPROTO_ICMP,
- oxm ? OXM_OF_ICMPV4_TYPE : NXM_OF_ICMP_TYPE,
- oxm ? OXM_OF_ICMPV4_CODE : NXM_OF_ICMP_CODE, oxm);
- } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
- /* IPv6. */
- nxm_put_ipv6(b, oxm ? OXM_OF_IPV6_SRC : NXM_NX_IPV6_SRC,
- &flow->ipv6_src, &match->wc.masks.ipv6_src);
- nxm_put_ipv6(b, oxm ? OXM_OF_IPV6_DST : NXM_NX_IPV6_DST,
- &flow->ipv6_dst, &match->wc.masks.ipv6_dst);
- nxm_put_ip(b, match, IPPROTO_ICMPV6,
- oxm ? OXM_OF_ICMPV6_TYPE : NXM_NX_ICMPV6_TYPE,
- oxm ? OXM_OF_ICMPV6_CODE : NXM_NX_ICMPV6_CODE, oxm);
-
- nxm_put_32m(b, oxm ? OXM_OF_IPV6_FLABEL : NXM_NX_IPV6_LABEL,
- flow->ipv6_label, match->wc.masks.ipv6_label);
-
- if (flow->nw_proto == IPPROTO_ICMPV6
- && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
- flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
- nxm_put_ipv6(b, oxm ? OXM_OF_IPV6_ND_TARGET : NXM_NX_ND_TARGET,
- &flow->nd_target, &match->wc.masks.nd_target);
- if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
- nxm_put_eth_masked(b, oxm ? OXM_OF_IPV6_ND_SLL : NXM_NX_ND_SLL,
- flow->arp_sha, match->wc.masks.arp_sha);
- }
- if (flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
- nxm_put_eth_masked(b, oxm ? OXM_OF_IPV6_ND_TLL : NXM_NX_ND_TLL,
- flow->arp_tha, match->wc.masks.arp_tha);
- }
- }
+ if (is_ip_any(flow)) {
+ nxm_put_ip(b, match, oxm);
} else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
flow->dl_type == htons(ETH_TYPE_RARP)) {
/* ARP. */
if (match->wc.masks.nw_proto) {
- nxm_put_16(b, oxm ? OXM_OF_ARP_OP : NXM_OF_ARP_OP,
+ nxm_put_16(b, mf_oxm_header(MFF_ARP_OP, oxm),
htons(flow->nw_proto));
}
- nxm_put_32m(b, oxm ? OXM_OF_ARP_SPA : NXM_OF_ARP_SPA,
+ nxm_put_32m(b, mf_oxm_header(MFF_ARP_SPA, oxm),
flow->nw_src, match->wc.masks.nw_src);
- nxm_put_32m(b, oxm ? OXM_OF_ARP_TPA : NXM_OF_ARP_TPA,
+ nxm_put_32m(b, mf_oxm_header(MFF_ARP_TPA, oxm),
flow->nw_dst, match->wc.masks.nw_dst);
- nxm_put_eth_masked(b, oxm ? OXM_OF_ARP_SHA : NXM_NX_ARP_SHA,
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ARP_SHA, oxm),
flow->arp_sha, match->wc.masks.arp_sha);
- nxm_put_eth_masked(b, oxm ? OXM_OF_ARP_THA : NXM_NX_ARP_THA,
+ nxm_put_eth_masked(b, mf_oxm_header(MFF_ARP_THA, oxm),
flow->arp_tha, match->wc.masks.arp_tha);
}
/* Tunnel ID. */
- nxm_put_64m(b, oxm ? OXM_OF_TUNNEL_ID : NXM_NX_TUN_ID,
- flow->tunnel.tun_id, match->wc.masks.tunnel.tun_id);
+ nxm_put_64m(b, mf_oxm_header(MFF_TUN_ID, oxm),
+ flow->tunnel.tun_id, match->wc.masks.tunnel.tun_id);
+
+ /* Other tunnel metadata. */
+ nxm_put_32m(b, mf_oxm_header(MFF_TUN_SRC, oxm),
+ flow->tunnel.ip_src, match->wc.masks.tunnel.ip_src);
+ nxm_put_32m(b, mf_oxm_header(MFF_TUN_DST, oxm),
+ flow->tunnel.ip_dst, match->wc.masks.tunnel.ip_dst);
/* Registers. */
for (i = 0; i < FLOW_N_REGS; i++) {
- nxm_put_32m(b, NXM_NX_REG(i),
+ nxm_put_32m(b, mf_oxm_header(MFF_REG0 + i, oxm),
htonl(flow->regs[i]), htonl(match->wc.masks.regs[i]));
}
+ /* Mark. */
+ nxm_put_32m(b, mf_oxm_header(MFF_PKT_MARK, oxm), htonl(flow->pkt_mark),
+ htonl(match->wc.masks.pkt_mark));
+
/* OpenFlow 1.1+ Metadata. */
- nxm_put_64m(b, OXM_OF_METADATA, flow->metadata, match->wc.masks.metadata);
+ nxm_put_64m(b, mf_oxm_header(MFF_METADATA, oxm),
+ flow->metadata, match->wc.masks.metadata);
/* Cookie. */
nxm_put_64m(b, NXM_NX_COOKIE, cookie, cookie_mask);
- match_len = b->size - start_len;
+ match_len = ofpbuf_size(b) - start_len;
return match_len;
}
nx_put_match(struct ofpbuf *b, const struct match *match,
ovs_be64 cookie, ovs_be64 cookie_mask)
{
- int match_len = nx_put_raw(b, false, match, cookie, cookie_mask);
+ int match_len = nx_put_raw(b, 0, match, cookie, cookie_mask);
- ofpbuf_put_zeros(b, ROUND_UP(match_len, 8) - match_len);
+ ofpbuf_put_zeros(b, PAD_SIZE(match_len, 8));
return match_len;
}
-
-/* Appends to 'b' an struct ofp11_match_header followed by the oxm format that
+/* Appends to 'b' an struct ofp11_match_header followed by the OXM format that
* expresses 'cr', plus enough zero bytes to pad the data appended out to a
* multiple of 8.
*
+ * OXM differs slightly among versions of OpenFlow. Specify the OpenFlow
+ * version in use as 'version'.
+ *
* This function can cause 'b''s data to be reallocated.
*
* Returns the number of bytes appended to 'b', excluding the padding. Never
* returns zero. */
int
-oxm_put_match(struct ofpbuf *b, const struct match *match)
+oxm_put_match(struct ofpbuf *b, const struct match *match,
+ enum ofp_version version)
{
int match_len;
struct ofp11_match_header *omh;
- size_t start_len = b->size;
+ size_t start_len = ofpbuf_size(b);
ovs_be64 cookie = htonll(0), cookie_mask = htonll(0);
ofpbuf_put_uninit(b, sizeof *omh);
- match_len = nx_put_raw(b, true, match, cookie, cookie_mask) + sizeof *omh;
- ofpbuf_put_zeros(b, ROUND_UP(match_len, 8) - match_len);
+ match_len = (nx_put_raw(b, version, match, cookie, cookie_mask)
+ + sizeof *omh);
+ ofpbuf_put_zeros(b, PAD_SIZE(match_len, 8));
- omh = (struct ofp11_match_header *)((char *)b->data + start_len);
+ omh = ofpbuf_at(b, start_len, sizeof *omh);
omh->type = htons(OFPMT_OXM);
omh->length = htons(match_len);
}
char *
-oxm_match_to_string(const uint8_t *p, unsigned int match_len)
+oxm_match_to_string(const struct ofpbuf *p, unsigned int match_len)
{
- const struct ofp11_match_header *omh = (struct ofp11_match_header *)p;
+ const struct ofp11_match_header *omh = ofpbuf_data(p);
uint16_t match_len_;
struct ds s;
goto err;
}
- return nx_match_to_string(p + sizeof *omh, match_len - sizeof *omh);
+ return nx_match_to_string(ofpbuf_at(p, sizeof *omh, 0),
+ match_len - sizeof *omh);
err:
return ds_steal_cstr(&s);
nx_match_from_string_raw(const char *s, struct ofpbuf *b)
{
const char *full_s = s;
- const size_t start_len = b->size;
+ const size_t start_len = ofpbuf_size(b);
if (!strcmp(s, "<any>")) {
- /* Ensure that 'b->data' isn't actually null. */
+ /* Ensure that 'ofpbuf_data(b)' isn't actually null. */
ofpbuf_prealloc_tailroom(b, 1);
return 0;
}
s++;
}
- return b->size - start_len;
+ return ofpbuf_size(b) - start_len;
}
int
nx_match_from_string(const char *s, struct ofpbuf *b)
{
int match_len = nx_match_from_string_raw(s, b);
- ofpbuf_put_zeros(b, ROUND_UP(match_len, 8) - match_len);
+ ofpbuf_put_zeros(b, PAD_SIZE(match_len, 8));
return match_len;
}
{
int match_len;
struct ofp11_match_header *omh;
- size_t start_len = b->size;
+ size_t start_len = ofpbuf_size(b);
ofpbuf_put_uninit(b, sizeof *omh);
match_len = nx_match_from_string_raw(s, b) + sizeof *omh;
- ofpbuf_put_zeros(b, ROUND_UP(match_len, 8) - match_len);
+ ofpbuf_put_zeros(b, PAD_SIZE(match_len, 8));
- omh = (struct ofp11_match_header *)((char *)b->data + start_len);
+ omh = ofpbuf_at(b, start_len, sizeof *omh);
omh->type = htons(OFPMT_OXM);
omh->length = htons(match_len);
return match_len;
}
\f
-void
+/* Parses 's' as a "move" action, in the form described in ovs-ofctl(8), into
+ * '*move'.
+ *
+ * Returns NULL if successful, otherwise a malloc()'d string describing the
+ * error. The caller is responsible for freeing the returned string. */
+char * WARN_UNUSED_RESULT
nxm_parse_reg_move(struct ofpact_reg_move *move, const char *s)
{
const char *full_s = s;
+ char *error;
- s = mf_parse_subfield(&move->src, s);
+ error = mf_parse_subfield__(&move->src, &s);
+ if (error) {
+ return error;
+ }
if (strncmp(s, "->", 2)) {
- ovs_fatal(0, "%s: missing `->' following source", full_s);
+ return xasprintf("%s: missing `->' following source", full_s);
}
s += 2;
- s = mf_parse_subfield(&move->dst, s);
- if (*s != '\0') {
- ovs_fatal(0, "%s: trailing garbage following destination", full_s);
+ error = mf_parse_subfield(&move->dst, s);
+ if (error) {
+ return error;
}
if (move->src.n_bits != move->dst.n_bits) {
- ovs_fatal(0, "%s: source field is %d bits wide but destination is "
- "%d bits wide", full_s,
- move->src.n_bits, move->dst.n_bits);
+ return xasprintf("%s: source field is %d bits wide but destination is "
+ "%d bits wide", full_s,
+ move->src.n_bits, move->dst.n_bits);
}
+ return NULL;
}
-void
+/* Parses 's' as a "load" action, in the form described in ovs-ofctl(8), into
+ * '*load'.
+ *
+ * Returns NULL if successful, otherwise a malloc()'d string describing the
+ * error. The caller is responsible for freeing the returned string. */
+char * WARN_UNUSED_RESULT
nxm_parse_reg_load(struct ofpact_reg_load *load, const char *s)
{
const char *full_s = s;
uint64_t value = strtoull(s, (char **) &s, 0);
+ char *error;
if (strncmp(s, "->", 2)) {
- ovs_fatal(0, "%s: missing `->' following value", full_s);
+ return xasprintf("%s: missing `->' following value", full_s);
}
s += 2;
- s = mf_parse_subfield(&load->dst, s);
- if (*s != '\0') {
- ovs_fatal(0, "%s: trailing garbage following destination", full_s);
+ error = mf_parse_subfield(&load->dst, s);
+ if (error) {
+ return error;
}
if (load->dst.n_bits < 64 && (value >> load->dst.n_bits) != 0) {
- ovs_fatal(0, "%s: value %"PRIu64" does not fit into %d bits",
- full_s, value, load->dst.n_bits);
+ return xasprintf("%s: value %"PRIu64" does not fit into %d bits",
+ full_s, value, load->dst.n_bits);
}
load->subvalue.be64[0] = htonll(0);
load->subvalue.be64[1] = htonll(value);
+ return NULL;
}
\f
/* nxm_format_reg_move(), nxm_format_reg_load(). */
mf_format_subfield(&move->dst, s);
}
-static void
-set_field_format(const struct ofpact_reg_load *load, struct ds *s)
-{
- const struct mf_field *mf = load->dst.field;
- union mf_value value;
-
- ovs_assert(load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD);
- ds_put_format(s, "set_field:");
- memset(&value, 0, sizeof value);
- bitwise_copy(&load->subvalue, sizeof load->subvalue, 0,
- &value, mf->n_bytes, 0, load->dst.n_bits);
- mf_format(mf, &value, NULL, s);
- ds_put_format(s, "->%s", mf->name);
-}
-
-static void
-load_format(const struct ofpact_reg_load *load, struct ds *s)
+void
+nxm_format_reg_load(const struct ofpact_reg_load *load, struct ds *s)
{
ds_put_cstr(s, "load:");
mf_format_subvalue(&load->subvalue, s);
ds_put_cstr(s, "->");
mf_format_subfield(&load->dst, s);
}
-
-void
-nxm_format_reg_load(const struct ofpact_reg_load *load, struct ds *s)
-{
- if (load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD) {
- set_field_format(load, s);
- } else {
- load_format(load, s);
- }
-}
\f
enum ofperr
nxm_reg_move_from_openflow(const struct nx_action_reg_move *narm,
return nxm_reg_load_check(load, NULL);
}
-
-enum ofperr
-nxm_reg_load_from_openflow12_set_field(
- const struct ofp12_action_set_field * oasf, struct ofpbuf *ofpacts)
-{
- uint16_t oasf_len = ntohs(oasf->len);
- uint32_t oxm_header = ntohl(oasf->dst);
- uint8_t oxm_length = NXM_LENGTH(oxm_header);
- struct ofpact_reg_load *load;
- const struct mf_field *mf;
-
- /* ofp12_action_set_field is padded to 64 bits by zero */
- if (oasf_len != ROUND_UP(sizeof(*oasf) + oxm_length, 8)) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- if (!is_all_zeros((const uint8_t *)(oasf) + sizeof *oasf + oxm_length,
- oasf_len - oxm_length - sizeof *oasf)) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
-
- if (NXM_HASMASK(oxm_header)) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- mf = mf_from_nxm_header(oxm_header);
- if (!mf) {
- return OFPERR_OFPBAC_BAD_ARGUMENT;
- }
- load = ofpact_put_REG_LOAD(ofpacts);
- ofpact_set_field_init(load, mf, oasf + 1);
-
- return nxm_reg_load_check(load, NULL);
-}
\f
enum ofperr
nxm_reg_move_check(const struct ofpact_reg_move *move, const struct flow *flow)
narm->dst = htonl(move->dst.field->nxm_header);
}
-static void
-reg_load_to_nxast(const struct ofpact_reg_load *load, struct ofpbuf *openflow)
+void
+nxm_reg_load_to_nxast(const struct ofpact_reg_load *load,
+ struct ofpbuf *openflow)
{
struct nx_action_reg_load *narl;
narl->dst = htonl(load->dst.field->nxm_header);
narl->value = load->subvalue.be64[1];
}
-
-static void
-set_field_to_ofast(const struct ofpact_reg_load *load,
- struct ofpbuf *openflow)
-{
- const struct mf_field *mf = load->dst.field;
- uint16_t padded_value_len = ROUND_UP(mf->n_bytes, 8);
- struct ofp12_action_set_field *oasf;
- char *value;
-
- /* Set field is the only action of variable length (so far),
- * so handling the variable length portion is open-coded here */
- oasf = ofputil_put_OFPAT12_SET_FIELD(openflow);
- oasf->dst = htonl(mf->oxm_header);
- oasf->len = htons(ntohs(oasf->len) + padded_value_len);
-
- value = ofpbuf_put_zeros(openflow, padded_value_len);
- bitwise_copy(&load->subvalue, sizeof load->subvalue, load->dst.ofs,
- value, mf->n_bytes, load->dst.ofs, load->dst.n_bits);
-}
-
-void
-nxm_reg_load_to_nxast(const struct ofpact_reg_load *load,
- struct ofpbuf *openflow)
-{
-
- if (load->ofpact.compat == OFPUTIL_OFPAT12_SET_FIELD) {
- struct ofp_header *oh = (struct ofp_header *)openflow->l2;
-
- switch(oh->version) {
- case OFP13_VERSION:
- case OFP12_VERSION:
- set_field_to_ofast(load, openflow);
- break;
-
- case OFP11_VERSION:
- case OFP10_VERSION:
- if (load->dst.n_bits < 64) {
- reg_load_to_nxast(load, openflow);
- } else {
- /* Split into 64bit chunks */
- int chunk, ofs;
- for (ofs = 0; ofs < load->dst.n_bits; ofs += chunk) {
- struct ofpact_reg_load subload = *load;
-
- chunk = MIN(load->dst.n_bits - ofs, 64);
-
- subload.dst.field = load->dst.field;
- subload.dst.ofs = load->dst.ofs + ofs;
- subload.dst.n_bits = chunk;
- bitwise_copy(&load->subvalue, sizeof load->subvalue, ofs,
- &subload.subvalue, sizeof subload.subvalue, 0,
- chunk);
- reg_load_to_nxast(&subload, openflow);
- }
- }
- break;
-
- default:
- NOT_REACHED();
- }
- } else {
- reg_load_to_nxast(load, openflow);
- }
-}
\f
/* nxm_execute_reg_move(), nxm_execute_reg_load(). */
void
nxm_execute_reg_move(const struct ofpact_reg_move *move,
- struct flow *flow)
+ struct flow *flow, struct flow_wildcards *wc)
{
union mf_value src_value;
union mf_value dst_value;
+ mf_mask_field_and_prereqs(move->dst.field, &wc->masks);
+ mf_mask_field_and_prereqs(move->src.field, &wc->masks);
+
mf_get_value(move->dst.field, flow, &dst_value);
mf_get_value(move->src.field, flow, &src_value);
bitwise_copy(&src_value, move->src.field->n_bytes, move->src.ofs,
}
void
-nxm_execute_reg_load(const struct ofpact_reg_load *load, struct flow *flow)
-{
+nxm_execute_reg_load(const struct ofpact_reg_load *load, struct flow *flow,
+ struct flow_wildcards *wc)
+{
+ /* Since at the datapath interface we do not have set actions for
+ * individual fields, but larger sets of fields for a given protocol
+ * layer, the set action will in practice only ever apply to exactly
+ * matched flows for the given protocol layer. For example, if the
+ * reg_load changes the IP TTL, the corresponding datapath action will
+ * rewrite also the IP addresses and TOS byte. Since these other field
+ * values may not be explicitly set, they depend on the incoming flow field
+ * values, and are hence all of them are set in the wildcards masks, when
+ * the action is committed to the datapath. For the rare case, where the
+ * reg_load action does not actually change the value, and no other flow
+ * field values are set (or loaded), the datapath action is skipped, and
+ * no mask bits are set. Such a datapath flow should, however, be
+ * dependent on the specific field value, so the corresponding wildcard
+ * mask bits must be set, lest the datapath flow be applied to packets
+ * containing some other value in the field and the field value remain
+ * unchanged regardless of the incoming value.
+ *
+ * We set the masks here for the whole fields, and their prerequisities.
+ * Even if only the lower byte of a TCP destination port is set,
+ * we set the mask for the whole field, and also the ip_proto in the IP
+ * header, so that the kernel flow would not be applied on, e.g., a UDP
+ * packet, or any other IP protocol in addition to TCP packets.
+ */
+ mf_mask_field_and_prereqs(load->dst.field, &wc->masks);
mf_write_subfield_flow(&load->dst, &load->subvalue, flow);
}
void
nxm_reg_load(const struct mf_subfield *dst, uint64_t src_data,
- struct flow *flow)
+ struct flow *flow, struct flow_wildcards *wc)
{
union mf_subvalue src_subvalue;
+ union mf_subvalue mask_value;
ovs_be64 src_data_be = htonll(src_data);
+ memset(&mask_value, 0xff, sizeof mask_value);
+ mf_write_subfield_flow(dst, &mask_value, &wc->masks);
+
bitwise_copy(&src_data_be, sizeof src_data_be, 0,
&src_subvalue, sizeof src_subvalue, 0,
sizeof src_data_be * 8);
}
\f
/* nxm_parse_stack_action, works for both push() and pop(). */
-void
+
+/* Parses 's' as a "push" or "pop" action, in the form described in
+ * ovs-ofctl(8), into '*stack_action'.
+ *
+ * Returns NULL if successful, otherwise a malloc()'d string describing the
+ * error. The caller is responsible for freeing the returned string. */
+char * WARN_UNUSED_RESULT
nxm_parse_stack_action(struct ofpact_stack *stack_action, const char *s)
{
- s = mf_parse_subfield(&stack_action->subfield, s);
+ char *error;
+
+ error = mf_parse_subfield__(&stack_action->subfield, &s);
+ if (error) {
+ return error;
+ }
+
if (*s != '\0') {
- ovs_fatal(0, "%s: trailing garbage following push or pop", s);
+ return xasprintf("%s: trailing garbage following push or pop", s);
}
+
+ return NULL;
}
void
{
union mf_subvalue *v = NULL;
- if (stack->size) {
- stack->size -= sizeof *v;
+ if (ofpbuf_size(stack)) {
+
+ ofpbuf_set_size(stack, ofpbuf_size(stack) - sizeof *v);
v = (union mf_subvalue *) ofpbuf_tail(stack);
}
void
nxm_execute_stack_push(const struct ofpact_stack *push,
- const struct flow *flow, struct ofpbuf *stack)
+ const struct flow *flow, struct flow_wildcards *wc,
+ struct ofpbuf *stack)
{
+ union mf_subvalue mask_value;
union mf_subvalue dst_value;
+ memset(&mask_value, 0xff, sizeof mask_value);
+ mf_write_subfield_flow(&push->subfield, &mask_value, &wc->masks);
+
mf_read_subfield(&push->subfield, flow, &dst_value);
nx_stack_push(stack, &dst_value);
}
void
nxm_execute_stack_pop(const struct ofpact_stack *pop,
- struct flow *flow, struct ofpbuf *stack)
+ struct flow *flow, struct flow_wildcards *wc,
+ struct ofpbuf *stack)
{
union mf_subvalue *src_value;
/* Only pop if stack is not empty. Otherwise, give warning. */
if (src_value) {
+ union mf_subvalue mask_value;
+
+ memset(&mask_value, 0xff, sizeof mask_value);
+ mf_write_subfield_flow(&pop->subfield, &mask_value, &wc->masks);
mf_write_subfield_flow(&pop->subfield, src_value, flow);
} else {
if (!VLOG_DROP_WARN(&rl)) {
projects / cascardo / ovs.git / blobdiff