diff options
Diffstat (limited to 'src/plugins/sixrd/sixrd.h')
| -rw-r--r-- | src/plugins/sixrd/sixrd.h | 158 |
1 files changed, 70 insertions, 88 deletions
diff --git a/src/plugins/sixrd/sixrd.h b/src/plugins/sixrd/sixrd.h index f911461b1cd..f443c039a13 100644 --- a/src/plugins/sixrd/sixrd.h +++ b/src/plugins/sixrd/sixrd.h @@ -14,20 +14,19 @@ *--------------------------------------------------------------------------- */ #include <stdbool.h> -#include <vppinfra/error.h> -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> #include <vnet/fib/ip6_fib.h> +#include <vnet/ip/ip.h> +#include <vnet/vnet.h> +#include <vppinfra/error.h> -#include "sixrd_dpo.h" - -int sixrd_create_domain(ip6_address_t *ip6_prefix, u8 ip6_prefix_len, - ip4_address_t *ip4_prefix, u8 ip4_prefix_len, - ip4_address_t *ip4_src, u32 *sixrd_domain_index, u16 mtu); -int sixrd_delete_domain(u32 sixrd_domain_index); -u8 *format_sixrd_trace(u8 *s, va_list *args); +#define SIXRD_DEFAULT_MTU 1480 /* 1500 - IPv4 header */ -typedef struct { +typedef struct +{ + u32 fib_index; + u32 hw_if_index; + u32 sw_if_index; + u32 tunnel_index; ip6_address_t ip6_prefix; ip4_address_t ip4_prefix; ip4_address_t ip4_src; @@ -38,46 +37,35 @@ typedef struct { u8 shift; u16 mtu; -} sixrd_domain_t; + bool security_check; +} sixrd_tunnel_t; + +typedef struct +{ + u16 msg_id_base; -typedef struct { /* pool of SIXRD domains */ - sixrd_domain_t *domains; + sixrd_tunnel_t *tunnels; + u32 *tunnel_index_by_sw_if_index; + uword *tunnel_by_ip; - /* convenience */ - vlib_main_t *vlib_main; - vnet_main_t *vnet_main; } sixrd_main_t; -#define foreach_sixrd_error \ - /* Must be first. */ \ - _(NONE, "valid SIXRD packets") \ - _(BAD_PROTOCOL, "bad protocol") \ - _(WRONG_ICMP_TYPE, "wrong icmp type") \ - _(SEC_CHECK, "security check failed") \ - _(ICMP, "unable to translate ICMP") \ - _(UNKNOWN, "unknown") \ - _(NO_DOMAIN, "no domain") \ - _(ENCAPSULATED, "encapsulated") \ - _(DECAPSULATED, "decapsulated") \ - _(TRANSLATED_4TO6, "translated 4 to 6") \ - _(TRANSLATED_6TO4, "translated 6 to 4") \ - _(FRAGMENT, "fragment handling error") \ - _(FRAGMENT_QUEUED, "dropped, missing first fragment") \ - _(FRAGMENTED, "packets requiring fragmentation") \ - _(FRAGMENT_PARTS, "fragment parts") \ - _(MALFORMED, "malformed packet") - -typedef enum { -#define _(sym,str) SIXRD_ERROR_##sym, - foreach_sixrd_error -#undef _ - SIXRD_N_ERROR, - } sixrd_error_t; +#define foreach_sixrd_error \ + /* Must be first. */ \ + _(NONE, "valid SIXRD packets") \ + _(BAD_PROTOCOL, "bad protocol") \ + _(SEC_CHECK, "security check failed") \ + _(NO_TUNNEL, "no tunnel") -typedef struct { - u32 sixrd_domain_index; -} sixrd_trace_t; + +typedef enum +{ +#define _(sym, str) SIXRD_ERROR_##sym, + foreach_sixrd_error +#undef _ + SIXRD_N_ERROR, +} sixrd_error_t; extern sixrd_main_t sixrd_main; @@ -85,57 +73,51 @@ extern sixrd_main_t sixrd_main; * sixrd_get_addr */ static_always_inline u32 -sixrd_get_addr (sixrd_domain_t *d, u64 dal) +sixrd_get_addr_net (const sixrd_tunnel_t * t, u64 dal) { - /* 1:1 mode */ - if (d->ip4_prefix_len == 32) return (d->ip4_prefix.as_u32); - - /* Grab 32 - ip4_prefix_len bits out of IPv6 address from offset ip6_prefix_len */ - return (d->ip4_prefix.as_u32 | (u32)(dal >> d->shift)); + if (t->ip4_prefix_len == 32) + return (t->ip4_prefix.as_u32); + + dal = clib_net_to_host_u64 (dal); + + /* Grab 32 - ip4_prefix_len bits out of IPv6 address from offset + * ip6_prefix_len */ + u32 mask = ~(~0ULL << (32 - t->ip4_prefix_len)); + u32 ip4 = + clib_net_to_host_u32 (t-> + ip4_prefix.as_u32) | ((u32) (dal >> t-> + shift) & mask); + return clib_host_to_net_u32 (ip4); } -/* - * Get the SIXRD domain from an IPv6 lookup adjacency. - */ -static_always_inline sixrd_domain_t * -ip6_sixrd_get_domain (u32 sdi, u32 *sixrd_domain_index) +static_always_inline sixrd_tunnel_t * +find_tunnel_by_ip4_address (ip4_address_t * ip) { - sixrd_main_t *mm = &sixrd_main; - sixrd_dpo_t *sd; - - sd = sixrd_dpo_get(sdi); - - ASSERT(sd); - *sixrd_domain_index = sd->sd_domain; - return pool_elt_at_index(mm->domains, *sixrd_domain_index); + sixrd_main_t *sm = &sixrd_main; + uword *p; + p = hash_get (sm->tunnel_by_ip, ip->as_u32); + if (!p) + return NULL; + return pool_elt_at_index (sm->tunnels, p[0]); } -/* - * Get the SIXRD domain from an IPv4 lookup adjacency. - * If the IPv4 address is not shared, no lookup is required. - * The IPv6 address is used otherwise. - */ -static_always_inline sixrd_domain_t * -ip4_sixrd_get_domain (u32 sdi, ip6_address_t *addr, - u32 *sixrd_domain_index, u8 *error) +static_always_inline sixrd_tunnel_t * +ip4_sixrd_get_tunnel (u32 sdi, ip4_address_t * addr, u8 * error) { - sixrd_main_t *mm = &sixrd_main; - sixrd_dpo_t *sd; - - sd = sixrd_dpo_get(sdi); - *sixrd_domain_index = sd->sd_domain; - if (*sixrd_domain_index != ~0) - return pool_elt_at_index(mm->domains, *sixrd_domain_index); - - u32 lbi = ip6_fib_table_fwding_lookup(&ip6_main, 0, addr); - const dpo_id_t *dpo = load_balance_get_bucket(lbi, 0); - if (PREDICT_TRUE(dpo->dpoi_type == sixrd_dpo_type)) + sixrd_tunnel_t *t = find_tunnel_by_ip4_address (addr); + if (!t) { - sd = sixrd_dpo_get(dpo->dpoi_index); - *sixrd_domain_index = sd->sd_domain; - return pool_elt_at_index(mm->domains, *sixrd_domain_index); + *error = SIXRD_ERROR_NO_TUNNEL; + return NULL; } - *error = SIXRD_ERROR_NO_DOMAIN; - return NULL; + return t; } + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |