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Implement set-field for IPv6 ND fields (nd_target, nd_sll, and nd_tll).

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This patch adds set-field operations for nd_target, nd_sll, and nd_tll
fields, with and without masks, using Nicira extensions and OpenFlow 1.2
protocol.

Signed-off-by: Randall A Sharo <randall.sharo at navy.mil>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Sharo, Randall A CIV SPAWARSYSCEN-ATLANTIC, 55200
2014-12-23 23:42:05 +00:00
committed by Ben Pfaff
parent ed5c51108c
commit e60e935b1f
14 changed files with 293 additions and 11 deletions
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23
lib/packets.h
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@@ -647,6 +647,27 @@ struct icmp6_header {
};
BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header));
/* Neighbor Discovery option field.
* ND options are always a multiple of 8 bytes in size. */
#define ND_OPT_LEN 8
struct ovs_nd_opt {
uint8_t nd_opt_type; /* Values defined in icmp6.h */
uint8_t nd_opt_len; /* in units of 8 octets (the size of this struct) */
uint8_t nd_opt_data[6]; /* Ethernet address in the case of SLL or TLL options */
};
BUILD_ASSERT_DECL(ND_OPT_LEN == sizeof(struct ovs_nd_opt));
/* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit
* alignment, this one only requires 16-bit alignment. */
#define ND_MSG_LEN 24
struct ovs_nd_msg {
struct icmp6_header icmph;
ovs_16aligned_be32 rco_flags;
union ovs_16aligned_in6_addr target;
struct ovs_nd_opt options[0];
};
BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg));
/* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
#define IPV6_LABEL_MASK 0x000fffff
@@ -758,6 +779,8 @@ void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
void packet_set_nd(struct ofpbuf *, const ovs_be32 target[4],
const uint8_t sll[6], const uint8_t tll[6]);
void packet_format_tcp_flags(struct ds *, uint16_t);
const char *packet_tcp_flag_to_string(uint32_t flag);