X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fpackets.h;h=cb126380921d4295383987689dd033ec21168b01;hb=d9065a90b6b955aa38586c952e8804ca7a22547e;hp=bf071e8e050eb8a53e58dcdb1075630eadc87eb9;hpb=40f78b38e745019e08b3cfe06ddf205f0cc4b970;p=sliver-openvswitch.git diff --git a/lib/packets.h b/lib/packets.h index bf071e8e0..cb1263809 100644 --- a/lib/packets.h +++ b/lib/packets.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009, 2010 Nicira Networks. + * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -56,8 +56,8 @@ static inline bool eth_addr_is_local(const uint8_t ea[6]) { /* Local if it is either a locally administered address or a Nicira random * address. */ - return !!(ea[0] & 2) - || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && !!(ea[3] & 0x80)); + return ea[0] & 2 + || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80); } static inline bool eth_addr_is_zero(const uint8_t ea[6]) { @@ -131,6 +131,8 @@ void compose_benign_packet(struct ofpbuf *, const char *tag, uint16_t snap_type, const uint8_t eth_src[ETH_ADDR_LEN]); +void eth_push_vlan(struct ofpbuf *, ovs_be16 tci); + /* Example: * * uint8_t mac[ETH_ADDR_LEN]; @@ -163,7 +165,6 @@ void compose_benign_packet(struct ofpbuf *, const char *tag, #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 @@ -252,23 +253,6 @@ struct vlan_eth_header { } __attribute__((packed)); BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); -/* A 'ccm' represents a Continuity Check Message from the 802.1ag specification. - * Continuity Check Messages are broadcast periodically so that hosts can - * determine who they have connectivity to. */ -#define CCM_LEN 74 -#define CCM_MAID_LEN 48 -struct ccm { - uint8_t mdlevel_version; /* MD Level and Version */ - uint8_t opcode; - uint8_t flags; - uint8_t tlv_offset; - 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)); -BUILD_ASSERT_DECL(CCM_LEN == sizeof(struct ccm)); - /* The "(void) (ip)[0]" below has no effect on the value, since it's the first * argument of a comma expression, but it makes sure that 'ip' is a pointer. * This is useful since a common mistake is to pass an integer instead of a @@ -280,6 +264,25 @@ BUILD_ASSERT_DECL(CCM_LEN == sizeof(struct ccm)); ((uint8_t *) ip)[2], \ ((uint8_t *) ip)[3] +/* Example: + * + * char *string = "1 33.44.55.66 2"; + * ovs_be32 ip; + * int a, b; + * + * if (sscanf(string, "%d"IP_SCAN_FMT"%d", + * &a, IP_SCAN_ARGS(&ip), &b) == 1 + IP_SCAN_COUNT + 1) { + * ... + * } + */ +#define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8 +#define IP_SCAN_ARGS(ip) \ + ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ + &((uint8_t *) ip)[1], \ + &((uint8_t *) ip)[2], \ + &((uint8_t *) ip)[3] +#define IP_SCAN_COUNT 4 + /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N * high-order 1-bits and 32-N low-order 0-bits. */ static inline bool @@ -344,8 +347,8 @@ BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); #define TCP_ACK 0x10 #define TCP_URG 0x20 -#define TCP_FLAGS(tcp_ctl) (htons(tcp_ctl) & 0x003f) -#define TCP_OFFSET(tcp_ctl) (htons(tcp_ctl) >> 12) +#define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x003f) +#define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12) #define TCP_HEADER_LEN 20 struct tcp_header { @@ -382,6 +385,20 @@ struct arp_eth_header { } __attribute__((packed)); BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); +/* Example: + * + * char *string = "1 ::1 2"; + * char ipv6_s[IPV6_SCAN_LEN + 1]; + * struct in6_addr ipv6; + * + * if (sscanf(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) == 3 + * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) { + * ... + * } + */ +#define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]" +#define IPV6_SCAN_LEN 46 + 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 } } } @@ -412,62 +429,11 @@ 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); -void * -compose_packet(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN], - const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type, - size_t size); - -/* 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_pdu(const struct lacp_info *actor, - const struct lacp_info *partner, struct lacp_pdu *); - -const struct lacp_pdu *parse_lacp_packet(const struct ofpbuf *); +void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN], + const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type, + size_t size); +void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN], + const uint8_t eth_src[ETH_ADDR_LEN], + unsigned int oui, uint16_t snap_type, size_t size); #endif /* packets.h */