/* 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, 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, oxm);
if (match->wc.masks.nw_tos & IP_DSCP_MASK) {
if (oxm) {
nxm_put_8(b, mf_oxm_header(MFF_IP_DSCP_SHIFTED, oxm),
flow->nw_tos >> 2);
} else {
nxm_put_8(b, mf_oxm_header(MFF_IP_DSCP, oxm),
flow->nw_tos & IP_DSCP_MASK);
}
}
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)
{
const struct flow *flow = &match->flow;
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);
} else {
nxm_put_8(b, NXM_OF_IP_TOS, flow->nw_tos & IP_DSCP_MASK);
}
}
static void
nxm_put_8m(struct ofpbuf *b, uint32_t header, uint8_t value, uint8_t mask)
{
switch (mask) {
case 0:
break;
case UINT8_MAX:
nxm_put_8(b, header, value);
break;
default:
nxm_put_header(b, NXM_MAKE_WILD_HEADER(header));
ofpbuf_put(b, &value, sizeof value);
ofpbuf_put(b, &mask, sizeof mask);
}
}
static void
nxm_put_frag(struct ofpbuf *b, const struct match *match, enum ofp_version oxm)
{
uint32_t header = mf_oxm_header(MFF_IP_FRAG, oxm);
uint8_t nw_frag = match->flow.nw_frag;
uint8_t nw_frag_mask = match->wc.masks.nw_frag;
switch (nw_frag_mask) {
case 0:
break;
case FLOW_NW_FRAG_MASK:
nxm_put_8(b, header, nw_frag);
break;
default:
nxm_put_8m(b, header, nw_frag, nw_frag_mask & FLOW_NW_FRAG_MASK);
break;
}
}
static void
nxm_put_frag(struct ofpbuf *b, const struct match *match)
{
uint8_t nw_frag = match->flow.nw_frag;
uint8_t nw_frag_mask = match->wc.masks.nw_frag;
switch (nw_frag_mask) {
case 0:
break;
case FLOW_NW_FRAG_MASK:
nxm_put_8(b, NXM_NX_IP_FRAG, nw_frag);
break;
default:
nxm_put_8m(b, NXM_NX_IP_FRAG, nw_frag,
nw_frag_mask & FLOW_NW_FRAG_MASK);
break;
}
}
