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Revert "lib: add link-state prefixes"

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This reverts commit c8172af682.
This commit is contained in:
Donald Sharp 2023-10-10 16:45:11 -04:00
parent 59c3a49166
commit bbe3163a1b
3 changed files with 18 additions and 176 deletions
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158
lib/prefix.c
View File

@ -20,7 +20,6 @@
DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix");
DEFINE_MTYPE_STATIC(LIB, PREFIX_FLOWSPEC, "Prefix Flowspec");
DEFINE_MTYPE_STATIC(LIB, PREFIX_LINKSTATE, "Prefix Link-State");
/* Maskbit. */
static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0,
@ -33,18 +32,6 @@ static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0,
#define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff)
char *(*prefix_linkstate_display_hook)(char *buf, size_t size,
uint16_t nlri_type, uintptr_t ptr,
uint16_t len) = NULL;
void prefix_set_linkstate_display_hook(char *(*func)(char *buf, size_t size,
uint16_t nlri_type,
uintptr_t ptr,
uint16_t len))
{
prefix_linkstate_display_hook = func;
}
int is_zero_mac(const struct ethaddr *mac)
{
int i = 0;
@ -94,8 +81,6 @@ int str2family(const char *string)
return AF_ETHERNET;
else if (!strcmp("evpn", string))
return AF_EVPN;
else if (!strcmp("link-state", string))
return AF_LINKSTATE;
return -1;
}
@ -110,8 +95,6 @@ const char *family2str(int family)
return "Ethernet";
case AF_EVPN:
return "Evpn";
case AF_LINKSTATE:
return "Link-State";
}
return "?";
}
@ -126,8 +109,6 @@ int afi2family(afi_t afi)
else if (afi == AFI_L2VPN)
return AF_ETHERNET;
/* NOTE: EVPN code should NOT use this interface. */
else if (afi == AFI_LINKSTATE)
return AF_LINKSTATE;
return 0;
}
@ -139,8 +120,6 @@ afi_t family2afi(int family)
return AFI_IP6;
else if (family == AF_ETHERNET || family == AF_EVPN)
return AFI_L2VPN;
else if (family == AF_LINKSTATE)
return AFI_LINKSTATE;
return 0;
}
@ -240,21 +219,6 @@ int prefix_match(union prefixconstptr unet, union prefixconstptr upfx)
offset = n->u.prefix_flowspec.prefixlen;
while (offset--)
if (np[offset] != pp[offset])
return 0;
return 1;
} else if (n->family == AF_LINKSTATE) {
if (n->u.prefix_linkstate.nlri_type !=
p->u.prefix_linkstate.nlri_type)
return 0;
/* Set both prefix's head pointer. */
np = (const uint8_t *)&n->u.prefix_linkstate.ptr;
pp = (const uint8_t *)&p->u.prefix_linkstate.ptr;
offset = n->prefixlen; /* length is checked above */
while (offset--)
if (np[offset] != pp[offset])
return 0;
@ -360,8 +324,6 @@ void prefix_copy(union prefixptr udest, union prefixconstptr usrc)
{
struct prefix *dest = udest.p;
const struct prefix *src = usrc.p;
void *temp;
int len;
dest->family = src->family;
dest->prefixlen = src->prefixlen;
@ -380,6 +342,9 @@ void prefix_copy(union prefixptr udest, union prefixconstptr usrc)
dest->u.lp.id = src->u.lp.id;
dest->u.lp.adv_router = src->u.lp.adv_router;
} else if (src->family == AF_FLOWSPEC) {
void *temp;
int len;
len = src->u.prefix_flowspec.prefixlen;
dest->u.prefix_flowspec.prefixlen =
src->u.prefix_flowspec.prefixlen;
@ -390,14 +355,6 @@ void prefix_copy(union prefixptr udest, union prefixconstptr usrc)
dest->u.prefix_flowspec.ptr = (uintptr_t)temp;
memcpy((void *)dest->u.prefix_flowspec.ptr,
(void *)src->u.prefix_flowspec.ptr, len);
} else if (src->family == AF_LINKSTATE) {
len = src->prefixlen;
dest->u.prefix_linkstate.nlri_type =
src->u.prefix_linkstate.nlri_type;
temp = XCALLOC(MTYPE_PREFIX_LINKSTATE, len);
dest->u.prefix_linkstate.ptr = (uintptr_t)temp;
memcpy((void *)dest->u.prefix_linkstate.ptr,
(void *)src->u.prefix_linkstate.ptr, len);
} else {
flog_err(EC_LIB_DEVELOPMENT,
"prefix_copy(): Unknown address family %d",
@ -487,14 +444,6 @@ int prefix_same(union prefixconstptr up1, union prefixconstptr up2)
p2->u.prefix_flowspec.prefixlen))
return 1;
}
if (p1->family == AF_LINKSTATE) {
if (p1->u.prefix_linkstate.nlri_type !=
p2->u.prefix_linkstate.nlri_type)
return 0;
if (!memcmp(&p1->u.prefix_linkstate.ptr,
&p2->u.prefix_linkstate.ptr, p2->prefixlen))
return 1;
}
}
return 0;
}
@ -542,22 +491,6 @@ int prefix_cmp(union prefixconstptr up1, union prefixconstptr up2)
if (pp1[offset] != pp2[offset])
return numcmp(pp1[offset], pp2[offset]);
return 0;
} else if (p1->family == AF_LINKSTATE) {
pp1 = (const uint8_t *)p1->u.prefix_linkstate.ptr;
pp2 = (const uint8_t *)p2->u.prefix_linkstate.ptr;
if (p1->u.prefix_linkstate.nlri_type !=
p2->u.prefix_linkstate.nlri_type)
return 1;
if (p1->prefixlen != p2->prefixlen)
return numcmp(p1->prefixlen, p2->prefixlen);
offset = p1->prefixlen;
while (offset--)
if (pp1[offset] != pp2[offset])
return numcmp(pp1[offset], pp2[offset]);
return 0;
}
pp1 = p1->u.val;
pp2 = p2->u.val;
@ -1147,22 +1080,6 @@ static const char *prefixevpn2str(const struct prefix_evpn *p, char *str,
return str;
}
const char *bgp_linkstate_nlri_type_2str(uint16_t nlri_type)
{
switch (nlri_type) {
case BGP_LINKSTATE_NODE:
return "Node";
case BGP_LINKSTATE_LINK:
return "Link";
case BGP_LINKSTATE_PREFIX4:
return "IPv4-Prefix";
case BGP_LINKSTATE_PREFIX6:
return "IPv6-Prefix";
}
return "Unknown";
}
const char *prefix2str(union prefixconstptr pu, char *str, int size)
{
const struct prefix *p = pu.p;
@ -1207,22 +1124,6 @@ const char *prefix2str(union prefixconstptr pu, char *str, int size)
strlcpy(str, "FS prefix", size);
break;
case AF_LINKSTATE:
if (prefix_linkstate_display_hook)
snprintf(str, size, "%s/%d",
prefix_linkstate_display_hook(
buf, sizeof(buf),
p->u.prefix_linkstate.nlri_type,
p->u.prefix_linkstate.ptr,
p->prefixlen),
p->prefixlen);
else
snprintf(str, size, "%s/%d",
bgp_linkstate_nlri_type_2str(
p->u.prefix_linkstate.nlri_type),
p->prefixlen);
break;
default:
strlcpy(str, "UNK prefix", size);
break;
@ -1246,17 +1147,6 @@ static ssize_t prefixhost2str(struct fbuf *fbuf, union prefixconstptr pu)
prefix_mac2str(&p->u.prefix_eth, buf, sizeof(buf));
return bputs(fbuf, buf);
case AF_LINKSTATE:
if (prefix_linkstate_display_hook)
prefix_linkstate_display_hook(
buf, sizeof(buf),
p->u.prefix_linkstate.nlri_type,
p->u.prefix_linkstate.ptr, p->prefixlen);
else
snprintf(buf, sizeof(buf), "%s",
bgp_linkstate_nlri_type_2str(
p->u.prefix_linkstate.nlri_type));
return bputs(fbuf, buf);
default:
return bprintfrr(fbuf, "{prefix.af=%dPF}", p->family);
}
@ -1291,20 +1181,6 @@ const char *prefix_sg2str(const struct prefix_sg *sg, char *sg_str)
return sg_str;
}
void prefix_linkstate_ptr_free(struct prefix *p)
{
void *temp;
if (!p || p->family != AF_LINKSTATE || !p->u.prefix_linkstate.ptr)
return;
temp = (void *)p->u.prefix_linkstate.ptr;
XFREE(MTYPE_PREFIX_LINKSTATE, temp);
p->u.prefix_linkstate.ptr = (uintptr_t)NULL;
}
struct prefix *prefix_new(void)
{
struct prefix *p;
@ -1454,16 +1330,17 @@ char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size)
unsigned prefix_hash_key(const void *pp)
{
struct prefix copy;
uint32_t len;
void *temp;
/* make sure *all* unused bits are zero, particularly including
* alignment /
* padding and unused prefix bytes. */
memset(&copy, 0, sizeof(copy));
prefix_copy(&copy, (struct prefix *)pp);
if (((struct prefix *)pp)->family == AF_FLOWSPEC) {
uint32_t len;
void *temp;
/* make sure *all* unused bits are zero,
* particularly including alignment /
* padding and unused prefix bytes.
*/
memset(&copy, 0, sizeof(copy));
prefix_copy(&copy, (struct prefix *)pp);
len = jhash((void *)copy.u.prefix_flowspec.ptr,
copy.u.prefix_flowspec.prefixlen,
0x55aa5a5a);
@ -1471,13 +1348,12 @@ unsigned prefix_hash_key(const void *pp)
XFREE(MTYPE_PREFIX_FLOWSPEC, temp);
copy.u.prefix_flowspec.ptr = (uintptr_t)NULL;
return len;
} else if (((struct prefix *)pp)->family == AF_LINKSTATE) {
len = jhash((void *)copy.u.prefix_linkstate.ptr, copy.prefixlen,
0x55aa5a5a);
prefix_linkstate_ptr_free(&copy);
return len;
}
/* make sure *all* unused bits are zero, particularly including
* alignment /
* padding and unused prefix bytes. */
memset(&copy, 0, sizeof(copy));
prefix_copy(&copy, (struct prefix *)pp);
return jhash(&copy,
offsetof(struct prefix, u.prefix) + PSIZE(copy.prefixlen),
0x55aa5a5a);

34
lib/prefix.h
View File

@ -125,15 +125,6 @@ struct evpn_addr {
#define prefix_addr u._prefix_addr
};
/* BGP Link-State NRLI types*/
enum bgp_linkstate_nlri_type {
/* RFC7752 Table 1 */
BGP_LINKSTATE_NODE = 1,
BGP_LINKSTATE_LINK = 2,
BGP_LINKSTATE_PREFIX4 = 3, /* IPv4 Topology Prefix */
BGP_LINKSTATE_PREFIX6 = 4, /* IPv6 Topology Prefix */
};
/*
* A struct prefix contains an address family, a prefix length, and an
* address. This can represent either a 'network prefix' as defined
@ -167,21 +158,12 @@ enum bgp_linkstate_nlri_type {
#define AF_FLOWSPEC (AF_MAX + 2)
#endif
#if !defined(AF_LINKSTATE)
#define AF_LINKSTATE (AF_MAX + 3)
#endif
struct flowspec_prefix {
uint8_t family;
uint16_t prefixlen; /* length in bytes */
uintptr_t ptr;
};
struct linkstate_prefix {
uint16_t nlri_type;
uintptr_t ptr;
};
/* FRR generic prefix structure. */
struct prefix {
uint8_t family;
@ -200,7 +182,6 @@ struct prefix {
uintptr_t ptr;
struct evpn_addr prefix_evpn; /* AF_EVPN */
struct flowspec_prefix prefix_flowspec; /* AF_FLOWSPEC */
struct linkstate_prefix prefix_linkstate; /* AF_LINKSTATE */
} u __attribute__((aligned(8)));
};
@ -298,14 +279,6 @@ struct prefix_fs {
struct flowspec_prefix prefix __attribute__((aligned(8)));
};
/* Prefix for a BGP-LS entry */
struct prefix_bgpls {
uint8_t family;
uint16_t prefixlen;
struct linkstate_prefix prefix __attribute__((aligned(8)));
};
struct prefix_sg {
uint8_t family;
uint16_t prefixlen;
@ -403,10 +376,6 @@ static inline void ipv4_addr_copy(struct in_addr *dst,
#define s6_addr32 __u6_addr.__u6_addr32
#endif /*s6_addr32*/
extern void prefix_set_linkstate_display_hook(
char *(*func)(char *buf, size_t size, uint16_t nlri_type, uintptr_t ptr,
uint16_t len));
/* Prototypes. */
extern int str2family(const char *string);
extern int afi2family(afi_t afi);
@ -432,8 +401,6 @@ static inline afi_t prefix_afi(union prefixconstptr pu)
*/
extern unsigned int prefix_bit(const uint8_t *prefix, const uint16_t bit_index);
extern void prefix_linkstate_ptr_free(struct prefix *p);
extern struct prefix *prefix_new(void);
extern void prefix_free(struct prefix **p);
/*
@ -451,7 +418,6 @@ extern void prefix_mcast_inet4_dump(const char *onfail, struct in_addr addr,
extern const char *prefix_sg2str(const struct prefix_sg *sg, char *str);
extern const char *prefix2str(union prefixconstptr upfx, char *buffer,
int size);
extern const char *bgp_linkstate_nlri_type_2str(uint16_t nlri_type);
extern int evpn_type5_prefix_match(const struct prefix *evpn_pfx,
const struct prefix *match_pfx);
extern int prefix_match(union prefixconstptr unet, union prefixconstptr upfx);

2
lib/table.c
View File

@ -142,7 +142,7 @@ static void route_common(const struct prefix *n, const struct prefix *p,
const uint8_t *pp;
uint8_t *newp;
if (n->family == AF_FLOWSPEC || n->family == AF_LINKSTATE)
if (n->family == AF_FLOWSPEC)
return prefix_copy(new, p);
np = (const uint8_t *)&n->u.prefix;
pp = (const uint8_t *)&p->u.prefix;