@@ -1281,6 +1281,50 @@ packet_set_icmp(struct dp_packet *packet, uint8_t type, uint8_t code)
}
}
+/* Sets the IGMP type to IGMP_HOST_MEMBERSHIP_QUERY and populates the
+ * v3 query header fields in 'packet'. 'packet' must be a valid IGMPv3
+ * query packet with its l4 offset properly populated.
+ */
+void
+packet_set_igmp3_query(struct dp_packet *packet, uint8_t max_resp,
+ ovs_be32 group, bool srs, uint8_t qrv, uint8_t qqic)
+{
+ struct igmpv3_query_header *igh = dp_packet_l4(packet);
+ ovs_be16 orig_type_max_resp =
+ htons(igh->type << 8 | igh->max_resp);
+ ovs_be16 new_type_max_resp =
+ htons(IGMP_HOST_MEMBERSHIP_QUERY << 8 | max_resp);
+
+ if (orig_type_max_resp != new_type_max_resp) {
+ igh->type = IGMP_HOST_MEMBERSHIP_QUERY;
+ igh->max_resp = max_resp;
+ igh->csum = recalc_csum16(igh->csum, orig_type_max_resp,
+ new_type_max_resp);
+ }
+
+ ovs_be32 old_group = get_16aligned_be32(&igh->group);
+
+ if (old_group != group) {
+ put_16aligned_be32(&igh->group, group);
+ igh->csum = recalc_csum32(igh->csum, old_group, group);
+ }
+
+ /* See RFC 3376 4.1.6. */
+ if (qrv > 7) {
+ qrv = 0;
+ }
+
+ ovs_be16 orig_srs_qrv_qqic = htons(igh->srs_qrv << 8 | igh->qqic);
+ ovs_be16 new_srs_qrv_qqic = htons(srs << 11 | qrv << 8 | qqic);
+
+ if (orig_srs_qrv_qqic != new_srs_qrv_qqic) {
+ igh->srs_qrv = (srs << 3 | qrv);
+ igh->qqic = qqic;
+ igh->csum = recalc_csum16(igh->csum, orig_srs_qrv_qqic,
+ new_srs_qrv_qqic);
+ }
+}
+
void
packet_set_nd_ext(struct dp_packet *packet, const ovs_16aligned_be32 rso_flags,
const uint8_t opt_type)
@@ -681,6 +681,7 @@ char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip,
#define IP_ECN_ECT_0 0x02
#define IP_ECN_CE 0x03
#define IP_ECN_MASK 0x03
+#define IP_DSCP_CS6 0xc0
#define IP_DSCP_MASK 0xfc
static inline int
@@ -763,6 +764,20 @@ struct igmpv3_header {
};
BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header));
+#define IGMPV3_QUERY_HEADER_LEN 12
+struct igmpv3_query_header {
+ uint8_t type;
+ uint8_t max_resp;
+ ovs_be16 csum;
+ ovs_16aligned_be32 group;
+ uint8_t srs_qrv;
+ uint8_t qqic;
+ ovs_be16 nsrcs;
+};
+BUILD_ASSERT_DECL(
+ IGMPV3_QUERY_HEADER_LEN == sizeof(struct igmpv3_query_header
+));
+
#define IGMPV3_RECORD_LEN 8
struct igmpv3_record {
uint8_t type;
@@ -1543,7 +1558,9 @@ void packet_set_nd(struct dp_packet *, const struct in6_addr *target,
void packet_set_nd_ext(struct dp_packet *packet,
const ovs_16aligned_be32 rso_flags,
const uint8_t opt_type);
-
+void packet_set_igmp3_query(struct dp_packet *, uint8_t max_resp,
+ ovs_be32 group, bool srs, uint8_t qrv,
+ uint8_t qqic);
void packet_format_tcp_flags(struct ds *, uint16_t);
const char *packet_tcp_flag_to_string(uint32_t flag);
void compose_arp__(struct dp_packet *);