X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fpackets.h;h=c858fc091ea39b83ef494b72ac4c7760da468bc7;hb=77fdfa9bf71aff101219b249955842f6dc59b5c9;hp=c0480db7ec73c580f118c46c2bda286135856c33;hpb=6767a2cce9a6412b3a41a927c4d56b9f0e1ec36f;p=openvswitch diff --git a/lib/packets.h b/lib/packets.h index c0480db7..c858fc09 100644 --- a/lib/packets.h +++ b/lib/packets.h @@ -28,6 +28,7 @@ #include "util.h" struct ofpbuf; +struct ds; bool dpid_from_string(const char *s, uint64_t *dpidp); @@ -39,6 +40,9 @@ static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 }; +static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED + = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 }; + static inline bool eth_addr_is_broadcast(const uint8_t ea[6]) { return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff; @@ -59,10 +63,15 @@ static inline bool eth_addr_is_zero(const uint8_t ea[6]) { return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]); } +static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN], + const uint8_t b[ETH_ADDR_LEN]) +{ + return memcmp(a, b, ETH_ADDR_LEN); +} static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN], const uint8_t b[ETH_ADDR_LEN]) { - return !memcmp(a, b, ETH_ADDR_LEN); + return !eth_addr_compare_3way(a, b); } static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN]) { @@ -153,7 +162,9 @@ void compose_benign_packet(struct ofpbuf *, const char *tag, #define ETH_TYPE_IP 0x0800 #define ETH_TYPE_ARP 0x0806 #define ETH_TYPE_VLAN 0x8100 +#define ETH_TYPE_IPV6 0x86dd #define ETH_TYPE_CFM 0x8902 +#define ETH_TYPE_LACP 0x8809 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame * lengths. */ @@ -168,7 +179,7 @@ void compose_benign_packet(struct ofpbuf *, const char *tag, struct eth_header { uint8_t eth_dst[ETH_ADDR_LEN]; uint8_t eth_src[ETH_ADDR_LEN]; - uint16_t eth_type; + ovs_be16 eth_type; } __attribute__((packed)); BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header)); @@ -189,7 +200,7 @@ BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header)); #define SNAP_HEADER_LEN 5 struct snap_header { uint8_t snap_org[3]; - uint16_t snap_type; + ovs_be16 snap_type; } __attribute__((packed)); BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header)); @@ -211,7 +222,7 @@ BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header)); /* Given the vlan_tci field from an 802.1Q header, in network byte order, * returns the VLAN ID in host byte order. */ static inline uint16_t -vlan_tci_to_vid(uint16_t vlan_tci) +vlan_tci_to_vid(ovs_be16 vlan_tci) { return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT; } @@ -219,15 +230,15 @@ vlan_tci_to_vid(uint16_t vlan_tci) /* Given the vlan_tci field from an 802.1Q header, in network byte order, * returns the priority code point (PCP) in host byte order. */ static inline int -vlan_tci_to_pcp(uint16_t vlan_tci) +vlan_tci_to_pcp(ovs_be16 vlan_tci) { return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT; } #define VLAN_HEADER_LEN 4 struct vlan_header { - uint16_t vlan_tci; /* Lowest 12 bits are VLAN ID. */ - uint16_t vlan_next_type; + ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */ + ovs_be16 vlan_next_type; }; BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); @@ -235,9 +246,9 @@ BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); struct vlan_eth_header { uint8_t veth_dst[ETH_ADDR_LEN]; uint8_t veth_src[ETH_ADDR_LEN]; - uint16_t veth_type; /* Always htons(ETH_TYPE_VLAN). */ - uint16_t veth_tci; /* Lowest 12 bits are VLAN ID. */ - uint16_t veth_next_type; + ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */ + ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */ + ovs_be16 veth_next_type; } __attribute__((packed)); BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); @@ -251,8 +262,8 @@ struct ccm { uint8_t opcode; uint8_t flags; uint8_t tlv_offset; - uint32_t seq; - uint16_t mpid; + ovs_be32 seq; + ovs_be16 mpid; uint8_t maid[CCM_MAID_LEN]; uint8_t zero[16]; /* Defined by ITU-T Y.1731 should be zero */ } __attribute__((packed)); @@ -298,14 +309,14 @@ ip_is_cidr(ovs_be32 netmask) struct ip_header { uint8_t ip_ihl_ver; uint8_t ip_tos; - uint16_t ip_tot_len; - uint16_t ip_id; - uint16_t ip_frag_off; + ovs_be16 ip_tot_len; + ovs_be16 ip_id; + ovs_be16 ip_frag_off; uint8_t ip_ttl; uint8_t ip_proto; - uint16_t ip_csum; - uint32_t ip_src; - uint32_t ip_dst; + ovs_be16 ip_csum; + ovs_be32 ip_src; + ovs_be32 ip_dst; }; BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); @@ -313,16 +324,16 @@ BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); struct icmp_header { uint8_t icmp_type; uint8_t icmp_code; - uint16_t icmp_csum; + ovs_be16 icmp_csum; }; BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header)); #define UDP_HEADER_LEN 8 struct udp_header { - uint16_t udp_src; - uint16_t udp_dst; - uint16_t udp_len; - uint16_t udp_csum; + ovs_be16 udp_src; + ovs_be16 udp_dst; + ovs_be16 udp_len; + ovs_be16 udp_csum; }; BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); @@ -338,14 +349,14 @@ BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); #define TCP_HEADER_LEN 20 struct tcp_header { - uint16_t tcp_src; - uint16_t tcp_dst; - uint32_t tcp_seq; - uint32_t tcp_ack; - uint16_t tcp_ctl; - uint16_t tcp_winsz; - uint16_t tcp_csum; - uint16_t tcp_urg; + ovs_be16 tcp_src; + ovs_be16 tcp_dst; + ovs_be32 tcp_seq; + ovs_be32 tcp_ack; + ovs_be16 tcp_ctl; + ovs_be16 tcp_winsz; + ovs_be16 tcp_csum; + ovs_be16 tcp_urg; }; BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); @@ -357,18 +368,104 @@ BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); #define ARP_ETH_HEADER_LEN 28 struct arp_eth_header { /* Generic members. */ - uint16_t ar_hrd; /* Hardware type. */ - uint16_t ar_pro; /* Protocol type. */ + ovs_be16 ar_hrd; /* Hardware type. */ + ovs_be16 ar_pro; /* Protocol type. */ uint8_t ar_hln; /* Hardware address length. */ uint8_t ar_pln; /* Protocol address length. */ - uint16_t ar_op; /* Opcode. */ + ovs_be16 ar_op; /* Opcode. */ /* Ethernet+IPv4 specific members. */ uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */ - uint32_t ar_spa; /* Sender protocol address. */ + ovs_be32 ar_spa; /* Sender protocol address. */ uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */ - uint32_t ar_tpa; /* Target protocol address. */ + ovs_be32 ar_tpa; /* Target protocol address. */ } __attribute__((packed)); BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); +extern const struct in6_addr in6addr_exact; +#define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \ + 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } } + +static inline bool ipv6_addr_equals(const struct in6_addr *a, + const struct in6_addr *b) +{ +#ifdef IN6_ARE_ADDR_EQUAL + return IN6_ARE_ADDR_EQUAL(a, b); +#else + return !memcmp(a, b, sizeof(*a)); +#endif +} + +static inline bool ipv6_mask_is_any(const struct in6_addr *mask) { + return ipv6_addr_equals(mask, &in6addr_any); +} + +static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) { + return ipv6_addr_equals(mask, &in6addr_exact); +} + +void format_ipv6_addr(char *addr_str, const struct in6_addr *addr); +void print_ipv6_addr(struct ds *string, const struct in6_addr *addr); +struct in6_addr ipv6_addr_bitand(const struct in6_addr *src, + const struct in6_addr *mask); +struct in6_addr ipv6_create_mask(int mask); +int ipv6_count_cidr_bits(const struct in6_addr *netmask); +bool ipv6_is_cidr(const struct in6_addr *netmask); + +/* Masks for lacp_info state member. */ +#define LACP_STATE_ACT 0x01 /* Activity. Active or passive? */ +#define LACP_STATE_TIME 0x02 /* Timeout. Short or long timeout? */ +#define LACP_STATE_AGG 0x04 /* Aggregation. Is the link is bondable? */ +#define LACP_STATE_SYNC 0x08 /* Synchronization. Is the link in up to date? */ +#define LACP_STATE_COL 0x10 /* Collecting. Is the link receiving frames? */ +#define LACP_STATE_DIST 0x20 /* Distributing. Is the link sending frames? */ +#define LACP_STATE_DEF 0x40 /* Defaulted. Using default partner info? */ +#define LACP_STATE_EXP 0x80 /* Expired. Using expired partner info? */ + +#define LACP_FAST_TIME_TX 1000 /* Fast transmission rate. */ +#define LACP_SLOW_TIME_TX 30000 /* Slow transmission rate. */ +#define LACP_FAST_TIME_RX (LACP_FAST_TIME_TX * 3) /* Fast receive rate. */ +#define LACP_SLOW_TIME_RX (LACP_SLOW_TIME_TX * 3) /* Slow receive rate. */ + +#define LACP_INFO_LEN 15 +struct lacp_info { + ovs_be16 sys_priority; /* System priority. */ + uint8_t sys_id[ETH_ADDR_LEN]; /* System ID. */ + ovs_be16 key; /* Operational key. */ + ovs_be16 port_priority; /* Port priority. */ + ovs_be16 port_id; /* Port ID. */ + uint8_t state; /* State mask. See LACP_STATE macros. */ +} __attribute__((packed)); +BUILD_ASSERT_DECL(LACP_INFO_LEN == sizeof(struct lacp_info)); + +#define LACP_PDU_LEN 110 +struct lacp_pdu { + uint8_t subtype; /* Always 1. */ + uint8_t version; /* Always 1. */ + + uint8_t actor_type; /* Always 1. */ + uint8_t actor_len; /* Always 20. */ + struct lacp_info actor; /* LACP actor information. */ + uint8_t z1[3]; /* Reserved. Always 0. */ + + uint8_t partner_type; /* Always 2. */ + uint8_t partner_len; /* Always 20. */ + struct lacp_info partner; /* LACP partner information. */ + uint8_t z2[3]; /* Reserved. Always 0. */ + + uint8_t collector_type; /* Always 3. */ + uint8_t collector_len; /* Always 16. */ + ovs_be16 collector_delay; /* Maximum collector delay. Set to UINT16_MAX. */ + uint8_t z3[64]; /* Combination of several fields. Always 0. */ +} __attribute__((packed)); +BUILD_ASSERT_DECL(LACP_PDU_LEN == sizeof(struct lacp_pdu)); + +void compose_lacp_packet(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN], + const struct lacp_pdu *); + +void compose_lacp_pdu(const struct lacp_info *actor, + const struct lacp_info *partner, struct lacp_pdu *); + +const struct lacp_pdu *parse_lacp_packet(const struct ofpbuf *); + #endif /* packets.h */