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Merge branch 'master' of ssh://git.nic.cz/projects/bird/GIT/bird

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This commit is contained in:
Ondrej Filip 2010-04-27 11:28:44 +02:00
commit 96599c957b
16 changed files with 917 additions and 622 deletions
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17
doc/bird.sgml
View file

@ -490,13 +490,18 @@ This argument can be omitted if there exists only a single instance.
<tag>show ospf neighbors [<m/name/] ["<m/interface/"]</tag>
Show a list of OSPF neighbors and a state of adjacency to them.
<tag>show ospf state [<m/name/]</tag>
Show detailed information about OSPF areas based on a content of link-state database.
It shows network topology, aggregated networks and routers from other areas and external routes.
<tag>show ospf state [all] [<m/name/]</tag>
Show detailed information about OSPF areas based on a content
of the link-state database. It shows network topology, stub
networks, aggregated networks and routers from other areas and
external routes. The command shows information about reachable
network nodes, use option <cf/all/ to show information about
all network nodes in the link-state database.
<tag>show ospf topology [<m/name/]</tag>
Show a topology of OSPF areas based on a content of link-state database.
It is just a stripped-down version of 'show ospf state'.
<tag>show ospf topology [all] [<m/name/]</tag>
Show a topology of OSPF areas based on a content of the
link-state database. It is just a stripped-down version of
'show ospf state'.
<tag>show static [<m/name/]</tag>
Show detailed information about static routes.

51
lib/checksum.c
View file

@ -15,26 +15,21 @@
#include "nest/bird.h"
#include "checksum.h"
static u16 /* One-complement addition */
add16(u16 sum, u16 x)
{
u16 z = sum + x;
return z + (z < sum);
}
static u32
static inline u32
add32(u32 sum, u32 x)
{
u32 z = sum + x;
return z + (z < sum);
// return z + (z < sum);
/* add carry */
if (z < x)
z++;
return z;
}
static u16
ipsum_calc_block(u16 *x, unsigned len, u16 sum)
ipsum_calc_block(u32 *buf, unsigned len, u16 isum)
{
int rest;
u32 tmp, *xx;
/*
* A few simple facts about the IP checksum (see RFC 1071 for detailed
* discussion):
@ -47,27 +42,17 @@ ipsum_calc_block(u16 *x, unsigned len, u16 sum)
* usual alignment requirements and is reasonably fast.
*/
ASSERT(!(len % 2));
ASSERT(!(len % 4));
if (!len)
return sum;
len >>= 1;
if ((unsigned long) x & 2) /* Align to 32-bit boundary */
{
sum = add16(sum, *x++);
len--;
}
rest = len & 1;
len >>= 1;
tmp = 0;
xx = (u32 *) x;
while (len)
{
tmp = add32(tmp, *xx++);
len--;
}
sum = add16(sum, add16(tmp & 0xffff, tmp >> 16U));
if (rest)
sum = add16(sum, *(u16 *) xx);
return isum;
u32 *end = buf + (len >> 2);
u32 sum = isum;
while (buf < end)
sum = add32(sum, *buf++);
sum = (sum >> 16) + (sum & 0xffff); /* add high-16 to low-16 */
sum += (sum >> 16); /* add carry */
return sum;
}

19
proto/ospf/config.Y
View file

@ -164,7 +164,6 @@ ospf_vlink_start: VIRTUAL LINK idval
add_tail(&this_area->vlink_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
OSPF_PATT->vid = $3;
OSPF_PATT->cost = COST_D;
OSPF_PATT->helloint = HELLOINT_D;
OSPF_PATT->rxmtint = RXMTINT_D;
OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
@ -315,11 +314,21 @@ CF_CLI(SHOW OSPF NEIGHBORS, optsym opttext, [<name>] [\"<interface>\"], [[Show i
CF_CLI(SHOW OSPF INTERFACE, optsym opttext, [<name>] [\"<interface>\"], [[Show information about interface]])
{ ospf_sh_iface(proto_get_named($4, &proto_ospf), $5); };
CF_CLI(SHOW OSPF TOPOLOGY, optsym opttext, [<name>], [[Show information about OSPF network topology]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 0); };
CF_CLI_HELP(SHOW OSPF TOPOLOGY, [all] [<name>], [[Show information about OSPF network topology]])
CF_CLI(SHOW OSPF STATE, optsym opttext, [<name>], [[Show information about OSPF network state]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 1); };
CF_CLI(SHOW OSPF TOPOLOGY, optsym opttext, [<name>], [[Show information about reachable OSPF network topology]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 0, 1); };
CF_CLI(SHOW OSPF TOPOLOGY ALL, optsym opttext, [<name>], [[Show information about all OSPF network topology]])
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 0, 0); };
CF_CLI_HELP(SHOW OSPF STATE, [all] [<name>], [[Show information about OSPF network state]])
CF_CLI(SHOW OSPF STATE, optsym opttext, [<name>], [[Show information about reachable OSPF network state]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 1, 1); };
CF_CLI(SHOW OSPF STATE ALL, optsym opttext, [<name>], [[Show information about all OSPF network state]])
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 1, 0); };
CF_CLI(SHOW OSPF LSADB, optsym opttext, [<name>], [[Show content of OSPF LSA database]])
{ ospf_sh_lsadb(proto_get_named($4, &proto_ospf)); };

23
proto/ospf/iface.c
View file

@ -260,6 +260,7 @@ ospf_iface_down(struct ospf_iface *ifa)
ifa->iface = NULL;
ifa->addr = NULL;
ifa->sk = NULL;
ifa->cost = 0;
ifa->vip = IPA_NONE;
return;
}
@ -445,27 +446,6 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
#ifdef OSPFv3
ifa->instance_id = ip->instance_id;
/*
addr = NULL;
if (ifa->type != OSPF_IT_VLINK)
{
struct ifa *a;
WALK_LIST(a, iface->addrs)
if (a->scope == SCOPE_LINK)
{
addr = a;
break;
}
if (!addr)
{
log(L_ERR "%s: Missing link-local address on interface %s, declaring as stub", p->name, iface->name);
ifa->ioprob = OSPF_I_LL;
ifa->stub = 1;
}
}
*/
#endif
if (ip->type == OSPF_IT_UNDEF)
@ -824,5 +804,4 @@ ospf_iface_shutdown(struct ospf_iface *ifa)
{
init_list(&ifa->neigh_list);
hello_timer_hook(ifa->hello_timer);
ospf_sk_close(ifa);
}

14
proto/ospf/lsalib.c
View file

@ -45,19 +45,16 @@ ospf_age(struct proto_ospf *po)
struct top_hash_entry *en, *nxt;
int flush = can_flush_lsa(po);
if (po->cleanup) OSPF_TRACE(D_EVENTS, "Running ospf_age cleanup");
WALK_SLIST_DELSAFE(en, nxt, po->lsal)
{
if (po->cleanup)
if (po->calcrt)
{
/* Cleanup before ospf_rt_spf() */
en->color = OUTSPF;
en->dist = LSINFINITY;
en->nhi = NULL;
en->nh = IPA_NONE;
en->lb = IPA_NONE;
DBG("Infinitying Type: %u, Id: %R, Rt: %R\n", en->lsa.type,
en->lsa.id, en->lsa.rt);
}
if (en->lsa.age == LSA_MAXAGE)
{
@ -88,9 +85,9 @@ ospf_age(struct proto_ospf *po)
en->lsa.age = LSA_MAXAGE;
}
}
po->cleanup = 0;
}
#ifndef CPU_BIG_ENDIAN
void
htonlsah(struct ospf_lsa_header *h, struct ospf_lsa_header *n)
{
@ -142,6 +139,7 @@ ntohlsab(void *n, void *h, u16 len)
for (i = 0; i < (len / sizeof(u32)); i++)
hid[i] = ntohl(nid[i]);
}
#endif /* little endian */
/*
void
@ -188,7 +186,7 @@ lsasum_calculate(struct ospf_lsa_header *h, void *body)
// log(L_WARN "Checksum %R %R %d start (len %d)", h->id, h->rt, h->type, length);
htonlsah(h, h);
htonlsab(body, body, length - sizeof(struct ospf_lsa_header));
htonlsab1(body, length - sizeof(struct ospf_lsa_header));
/*
char buf[1024];
@ -202,7 +200,7 @@ lsasum_calculate(struct ospf_lsa_header *h, void *body)
// log(L_WARN "Checksum result %4x", h->checksum);
ntohlsah(h, h);
ntohlsab(body, body, length - sizeof(struct ospf_lsa_header));
ntohlsab1(body, length - sizeof(struct ospf_lsa_header));
}
/*

12
proto/ospf/lsalib.h
View file

@ -10,10 +10,22 @@
#ifndef _BIRD_OSPF_LSALIB_H_
#define _BIRD_OSPF_LSALIB_H_
#ifdef CPU_BIG_ENDIAN
static inline void htonlsah(struct ospf_lsa_header *h, struct ospf_lsa_header *n) { *n = *h; };
static inline void ntohlsah(struct ospf_lsa_header *n, struct ospf_lsa_header *h) { *h = *n; };
static inline void htonlsab(void *h, void *n, u16 len) { memcpy(n, h, len); };
static inline void ntohlsab(void *n, void *h, u16 len) { memcpy(h, n, len); };
static inline void htonlsab1(void *h, u16 len) { };
static inline void ntohlsab1(void *n, u16 len) { };
#else
void htonlsah(struct ospf_lsa_header *h, struct ospf_lsa_header *n);
void ntohlsah(struct ospf_lsa_header *n, struct ospf_lsa_header *h);
void htonlsab(void *h, void *n, u16 len);
void ntohlsab(void *n, void *h, u16 len);
static inline void htonlsab1(void *h, u16 len) { htonlsab(h, h, len); };
static inline void ntohlsab1(void *n, u16 len) { ntohlsab(n, n, len); };
#endif
void lsasum_calculate(struct ospf_lsa_header *header, void *body);
u16 lsasum_check(struct ospf_lsa_header *h, void *body);
#define CMP_NEWER 1

21
proto/ospf/neighbor.c
View file

@ -536,27 +536,6 @@ find_neigh(struct ospf_iface *ifa, u32 rid)
return NULL;
}
/* Find a closest neighbor which is at least 2-Way */
struct ospf_neighbor *
find_neigh_noifa(struct proto_ospf *po, u32 rid)
{
struct ospf_neighbor *n = NULL, *m;
struct ospf_iface *ifa;
WALK_LIST(ifa, po->iface_list) if ((m = find_neigh(ifa, rid)) != NULL)
{
if (m->state >= NEIGHBOR_2WAY)
{
if (n == NULL)
n = m;
else if (m->ifa->cost < n->ifa->cost)
n = m;
}
}
return n;
}
struct ospf_area *
ospf_find_area(struct proto_ospf *po, u32 aid)
{

1
proto/ospf/neighbor.h
View file

@ -14,7 +14,6 @@ struct ospf_neighbor *ospf_neighbor_new(struct ospf_iface *ifa);
void ospf_neigh_sm(struct ospf_neighbor *n, int event);
void bdr_election(struct ospf_iface *ifa);
struct ospf_neighbor *find_neigh(struct ospf_iface *ifa, u32 rid);
struct ospf_neighbor *find_neigh_noifa(struct proto_ospf *po, u32 rid);
struct ospf_area *ospf_find_area(struct proto_ospf *po, u32 aid);
void ospf_neigh_remove(struct ospf_neighbor *n);
void ospf_sh_neigh_info(struct ospf_neighbor *n);

222
proto/ospf/ospf.c
View file

@ -75,7 +75,7 @@
*
* The function area_disp() is
* responsible for late originating of router LSA and network LSA
* and for cleanup after routing table calculation process in
* and for cleanup before routing table calculation process in
* the area.
* To every &ospf_iface, we connect one or more
* &ospf_neighbor's -- a structure containing many timers and queues
@ -161,7 +161,6 @@ ospf_start(struct proto *p)
fib_init(&po->rtf, p->pool, sizeof(ort), 16, ospf_rt_initort);
po->areano = 0;
po->gr = ospf_top_new(p->pool);
po->cleanup = 1;
s_init_list(&(po->lsal));
if (EMPTY_LIST(c->area_list))
{
@ -1134,8 +1133,34 @@ lsa_compare_for_state(const void *p1, const void *p2)
}
}
static int
ext_compare_for_state(const void *p1, const void *p2)
{
struct top_hash_entry * he1 = * (struct top_hash_entry **) p1;
struct top_hash_entry * he2 = * (struct top_hash_entry **) p2;
struct ospf_lsa_header *lsa1 = &(he1->lsa);
struct ospf_lsa_header *lsa2 = &(he2->lsa);
if (lsa1->rt != lsa2->rt)
return lsa1->rt - lsa2->rt;
if (lsa1->id != lsa2->id)
return lsa1->id - lsa2->id;
return lsa1->sn - lsa2->sn;
}
static inline void
show_lsa_router(struct proto_ospf *po, struct top_hash_entry *he)
show_lsa_distance(struct top_hash_entry *he)
{
if (he->color == INSPF)
cli_msg(-1016, "\t\tdistance %u", he->dist);
else
cli_msg(-1016, "\t\tunreachable");
}
static inline void
show_lsa_router(struct proto_ospf *po, struct top_hash_entry *he, int first, int verbose)
{
struct ospf_lsa_header *lsa = &(he->lsa);
struct ospf_lsa_rt *rt = he->lsa_body;
@ -1143,6 +1168,14 @@ show_lsa_router(struct proto_ospf *po, struct top_hash_entry *he)
int max = lsa_rt_count(lsa);
int i;
if (first)
{
cli_msg(-1016, "");
cli_msg(-1016, "\trouter %R", he->lsa.rt);
show_lsa_distance(he);
}
for (i = 0; i < max; i++)
if (rr[i].type == LSART_VLNK)
cli_msg(-1016, "\t\tvlink %R metric %u", rr[i].id, rr[i].metric);
@ -1175,6 +1208,9 @@ show_lsa_router(struct proto_ospf *po, struct top_hash_entry *he)
}
#ifdef OSPFv2
if (!verbose)
return;
for (i = 0; i < max; i++)
if (rr[i].type == LSART_STUB)
cli_msg(-1016, "\t\tstubnet %I/%d metric %u", ipa_from_u32(rr[i].id),
@ -1198,6 +1234,8 @@ show_lsa_network(struct top_hash_entry *he)
cli_msg(-1016, "\tnetwork [%R-%u]", lsa->rt, lsa->id);
#endif
show_lsa_distance(he);
for (i = 0; i < lsa_net_count(lsa); i++)
cli_msg(-1016, "\t\trouter %R", ln->routers[i]);
}
@ -1251,6 +1289,8 @@ show_lsa_external(struct top_hash_entry *he)
int pxlen, ebit, rt_fwaddr_valid;
u32 rt_tag, rt_metric;
he->domain = 0; /* Unmark the LSA */
rt_metric = ext->metric & METRIC_MASK;
ebit = ext->metric & LSA_EXT_EBIT;
#ifdef OSPFv2
@ -1289,7 +1329,7 @@ show_lsa_external(struct top_hash_entry *he)
#ifdef OSPFv3
static inline void
show_lsa_prefix(struct top_hash_entry *he, struct ospf_lsa_header *olsa)
show_lsa_prefix(struct top_hash_entry *he, struct ospf_lsa_header *cnode)
{
struct ospf_lsa_prefix *px = he->lsa_body;
ip_addr pxa;
@ -1299,10 +1339,14 @@ show_lsa_prefix(struct top_hash_entry *he, struct ospf_lsa_header *olsa)
u32 *buf;
int i;
/* We check whether given prefix-LSA is related to the last non-prefix-LSA */
if ((olsa == NULL) || (olsa->type != px->ref_type) || (olsa->rt != px->ref_rt) ||
!(((px->ref_type == LSA_T_RT) && (px->ref_id == 0)) ||
((px->ref_type == LSA_T_NET) && (px->ref_id == olsa->id))))
/* We check whether given prefix-LSA is related to the current node */
if ((px->ref_type != cnode->type) || (px->ref_rt != cnode->rt))
return;
if ((px->ref_type == LSA_T_RT) && (px->ref_id != 0))
return;
if ((px->ref_type == LSA_T_NET) && (px->ref_id != cnode->id))
return;
buf = px->rest;
@ -1319,18 +1363,14 @@ show_lsa_prefix(struct top_hash_entry *he, struct ospf_lsa_header *olsa)
#endif
void
ospf_sh_state(struct proto *p, int verbose)
ospf_sh_state(struct proto *p, int verbose, int reachable)
{
struct proto_ospf *po = (struct proto_ospf *) p;
struct top_graph *f = po->gr;
unsigned int i, j1, j2;
u32 last_rt = 0xFFFFFFFF;
struct ospf_lsa_header *cnode = NULL;
int num = po->gr->hash_entries;
unsigned int i, ix, j1, j2, jx;
u32 last_area = 0xFFFFFFFF;
#ifdef OSPFv3
struct ospf_lsa_header *olsa = NULL;
#endif
if (p->proto_state != PS_UP)
{
cli_msg(-1016, "%s: is not up", p->name);
@ -1338,10 +1378,14 @@ ospf_sh_state(struct proto *p, int verbose)
return;
}
struct top_hash_entry *hea[f->hash_entries];
/* We store interesting area-scoped LSAs in array hea and
global-scoped (LSA_T_EXT) LSAs in array hex */
struct top_hash_entry *hea[num];
struct top_hash_entry *hex[verbose ? num : 0];
struct top_hash_entry *he;
j1 = j2 = 0;
j1 = j2 = jx = 0;
WALK_SLIST(he, po->lsal)
{
int accept;
@ -1355,13 +1399,18 @@ ospf_sh_state(struct proto *p, int verbose)
case LSA_T_SUM_NET:
case LSA_T_SUM_RT:
case LSA_T_EXT:
#ifdef OSPFv3
case LSA_T_PREFIX:
#endif
accept = verbose;
break;
case LSA_T_EXT:
if (verbose)
{
he->domain = 1; /* Abuse domain field to mark the LSA */
hex[jx++] = he;
}
default:
accept = 0;
}
@ -1372,66 +1421,137 @@ ospf_sh_state(struct proto *p, int verbose)
j2++;
}
if ((j1 + j2) != f->hash_entries)
if ((j1 + j2) != num)
die("Fatal mismatch");
qsort(hea, j1, sizeof(struct top_hash_entry *), lsa_compare_for_state);
qsort(hex, jx, sizeof(struct top_hash_entry *), ext_compare_for_state);
/*
* This code is a bit tricky, we have a primary LSAs (router and
* network) that are presented as a node, and secondary LSAs that
* are presented as a part of a primary node. cnode represents an
* currently opened node (whose header was presented). The LSAs are
* sorted to get secondary LSAs just after related primary LSA (if
* available). We present secondary LSAs only when related primary
* LSA is opened.
*
* AS-external LSAs are stored separately as they might be presented
* several times (for each area when related ASBR is opened). When
* the node is closed, related external routes are presented. We
* also have to take into account that in OSPFv3, there might be
* more router-LSAs and only the first should be considered as a
* primary. This is handled by not closing old router-LSA when next
* one is processed (which is not opened because there is already
* one opened).
*/
ix = 0;
for (i = 0; i < j1; i++)
{
if (last_area != hea[i]->domain)
he = hea[i];
/* If there is no opened node, we open the LSA (if appropriate) or skip to the next one */
if (!cnode)
{
if (((he->lsa.type == LSA_T_RT) || (he->lsa.type == LSA_T_NET))
&& ((he->color == INSPF) || !reachable))
{
cnode = &(he->lsa);
if (he->domain != last_area)
{
cli_msg(-1016, "");
cli_msg(-1016, "area %R", hea[i]->domain);
last_area = hea[i]->domain;
last_rt = 0xFFFFFFFF;
cli_msg(-1016, "area %R", he->domain);
last_area = he->domain;
ix = 0;
}
}
else
continue;
}
if ((hea[i]->lsa.rt != last_rt) && (hea[i]->lsa.type != LSA_T_NET)
#ifdef OSPFv3
&& (hea[i]->lsa.type != LSA_T_PREFIX)
#endif
)
{
cli_msg(-1016, "");
cli_msg(-1016, (hea[i]->lsa.type != LSA_T_EXT) ? "\trouter %R" : "\txrouter %R", hea[i]->lsa.rt);
last_rt = hea[i]->lsa.rt;
}
ASSERT(cnode && (he->domain == last_area) && (he->lsa.rt == cnode->rt));
switch (hea[i]->lsa.type)
switch (he->lsa.type)
{
case LSA_T_RT:
show_lsa_router(po, hea[i]);
show_lsa_router(po, he, he->lsa.id == cnode->id, verbose);
break;
case LSA_T_NET:
show_lsa_network(hea[i]);
show_lsa_network(he);
break;
case LSA_T_SUM_NET:
show_lsa_sum_net(hea[i]);
if (cnode->type == LSA_T_RT)
show_lsa_sum_net(he);
break;
case LSA_T_SUM_RT:
show_lsa_sum_rt(hea[i]);
break;
case LSA_T_EXT:
show_lsa_external(hea[i]);
if (cnode->type == LSA_T_RT)
show_lsa_sum_rt(he);
break;
#ifdef OSPFv3
case LSA_T_PREFIX:
show_lsa_prefix(hea[i], olsa);
show_lsa_prefix(he, cnode);
break;
#endif
case LSA_T_EXT:
show_lsa_external(he);
break;
}
#ifdef OSPFv3
if (hea[i]->lsa.type != LSA_T_PREFIX)
olsa = &(hea[i]->lsa);
#endif
/* In these cases, we close the current node */
if ((i+1 == j1)
|| (hea[i+1]->domain != last_area)
|| (hea[i+1]->lsa.rt != cnode->rt)
|| (hea[i+1]->lsa.type == LSA_T_NET))
{
while ((ix < jx) && (hex[ix]->lsa.rt < cnode->rt))
ix++;
while ((ix < jx) && (hex[ix]->lsa.rt == cnode->rt))
show_lsa_external(hex[ix++]);
cnode = NULL;
}
}
int hdr = 0;
u32 last_rt = 0xFFFFFFFF;
for (ix = 0; ix < jx; ix++)
{
he = hex[ix];
/* If it is still marked, we show it now. */
if (he->domain)
{
he->domain = 0;
if ((he->color != INSPF) && reachable)
continue;
if (!hdr)
{
cli_msg(-1016, "");
cli_msg(-1016, "other ASBRs");
hdr = 1;
}
if (he->lsa.rt != last_rt)
{
cli_msg(-1016, "");
cli_msg(-1016, "\trouter %R", he->lsa.rt);
last_rt = he->lsa.rt;
}
show_lsa_external(he);
}
}
cli_msg(0, "");
}
@ -1468,7 +1588,7 @@ void
ospf_sh_lsadb(struct proto *p)
{
struct proto_ospf *po = (struct proto_ospf *) p;
struct top_graph *f = po->gr;
int num = po->gr->hash_entries;
unsigned int i, j;
int last_dscope = -1;
u32 last_domain = 0;
@ -1480,14 +1600,14 @@ ospf_sh_lsadb(struct proto *p)
return;
}
struct top_hash_entry *hea[f->hash_entries];
struct top_hash_entry *hea[num];
struct top_hash_entry *he;
j = 0;
WALK_SLIST(he, po->lsal)
hea[j++] = he;
if (j != f->hash_entries)
if (j != num)
die("Fatal mismatch");
qsort(hea, j, sizeof(struct top_hash_entry *), lsa_compare_for_lsadb);

3
proto/ospf/ospf.h
View file

@ -722,7 +722,6 @@ struct proto_ospf
slist lsal; /* List of all LSA's */
int calcrt; /* Routing table calculation scheduled?
0=no, 1=normal, 2=forced reload */
int cleanup; /* Should I cleanup after RT calculation? */
list iface_list; /* Interfaces we really use */
list area_list;
int areano; /* Number of area I belong to */
@ -808,7 +807,7 @@ static inline void schedule_link_lsa(struct ospf_iface *ifa UNUSED) {}
void ospf_sh_neigh(struct proto *p, char *iff);
void ospf_sh(struct proto *p);
void ospf_sh_iface(struct proto *p, char *iff);
void ospf_sh_state(struct proto *p, int verbose);
void ospf_sh_state(struct proto *p, int verbose, int reachable);
void ospf_sh_lsadb(struct proto *p);

26
proto/ospf/packet.c
View file

@ -76,6 +76,7 @@ ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt)
}
password_cpy(pkt->u.password, passwd->password, sizeof(union ospf_auth));
case OSPF_AUTH_NONE:
pkt->checksum = 0;
pkt->checksum = ipsum_calculate(pkt, sizeof(struct ospf_packet) -
sizeof(union ospf_auth), (pkt + 1),
ntohs(pkt->length) -
@ -241,6 +242,19 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_
#endif
#ifdef OSPFv2
static inline struct ospf_neighbor *
find_neigh_by_ip(struct ospf_iface *ifa, ip_addr ip)
{
struct ospf_neighbor *n;
WALK_LIST(n, ifa->neigh_list)
if (ipa_equal(n->ip, ip))
return n;
return NULL;
}
#endif
/**
* ospf_rx_hook
@ -418,10 +432,16 @@ ospf_rx_hook(sock *sk, int size)
return 1;
}
/* This is deviation from RFC 2328 - neighbours should be identified by
* IP address on broadcast and NBMA networks.
*/
#ifdef OSPFv2
/* In OSPFv2, neighbors are identified by either IP or Router ID, base on network type */
struct ospf_neighbor *n;
if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_NBMA))
n = find_neigh_by_ip(ifa, sk->faddr);
else
n = find_neigh(ifa, rid);
#else
struct ospf_neighbor *n = find_neigh(ifa, rid);
#endif
if(!n && (ps->type != HELLO_P))
{

1007
proto/ospf/rt.c
View file

File diff suppressed because it is too large Load diff

28
proto/ospf/rt.h
View file

@ -18,21 +18,30 @@ typedef struct orta
{
int type;
u32 options;
/* router-LSA style options (for ORT_ROUTER), with V,E,B bits.
In OSPFv2, ASBRs from another areas (that we know from rt-summary-lsa),
have just ORTA_ASBR in options, their real options are unknown */
/*
* For ORT_ROUTER routes, options field are router-LSA style
* options, with V,E,B bits. In OSPFv2, ASBRs from another areas
* (that we know from rt-summary-lsa) have just ORTA_ASBR in
* options, their real options are unknown.
*/
#define ORTA_ASBR OPT_RT_E
#define ORTA_ABR OPT_RT_B
struct ospf_area *oa;
/*
* For ORT_NET routes, the field is almost unused with one
* exception: ORTA_PREF for external routes means that the route is
* preferred in AS external route selection according to 16.4.1. -
* it is intra-area path using non-backbone area. In other words,
* the forwarding address (or ASBR if forwarding address is zero) is
* intra-area (type == RTS_OSPF) and its area is not a backbone.
*/
#define ORTA_PREF 0x80000000
u32 metric1;
u32 metric2;
ip_addr nh; /* Next hop */
struct ospf_iface *ifa; /* Outgoing interface */
struct top_hash_entry *ar; /* Advertising router (or ABR) */
u32 tag;
u32 rid; /* Router ID of real advertising router */
/* For ext-LSA from different area, 'ar' is a type 1 LSA of ABR.
Router ID of real advertising router is stored in 'rid'. */
struct ospf_area *oa;
struct ospf_iface *ifa; /* Outgoing interface */
ip_addr nh; /* Next hop */
}
orta;
@ -41,7 +50,6 @@ typedef struct ort
struct fib_node fn;
orta n;
orta o;
struct ort *efn; /* For RFC1583 */
}
ort;

26
proto/ospf/topology.c
View file

@ -1114,6 +1114,8 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
struct proto_ospf *po = oa->po;
struct ospf_iface *ifa;
struct ospf_lsa_prefix *lp;
struct ifa *vlink_addr = NULL;
int host_addr = 0;
int net_lsa;
int i = 0;
u8 flags;
@ -1139,10 +1141,15 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
struct ifa *a;
WALK_LIST(a, ifa->iface->addrs)
{
if (((a->pxlen < MAX_PREFIX_LENGTH) && net_lsa) ||
(a->flags & IA_SECONDARY) ||
if ((a->flags & IA_SECONDARY) ||
(a->flags & IA_UNNUMBERED) ||
(a->scope <= SCOPE_LINK) ||
(a->scope <= SCOPE_LINK))
continue;
if (!vlink_addr)
vlink_addr = a;
if (((a->pxlen < MAX_PREFIX_LENGTH) && net_lsa) ||
configured_stubnet(oa, a))
continue;
@ -1150,10 +1157,20 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(a->pxlen)),
a->ip, a->pxlen, flags, ifa->cost);
i++;
if (flags & OPT_PX_LA)
host_addr = 1;
}
}
/* FIXME Handle vlinks? see RFC5340, page 38 */
/* If there are some configured vlinks, add some global address,
which will be used as a vlink endpoint. */
if (!EMPTY_LIST(oa->ac->vlink_list) && !host_addr && vlink_addr)
{
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(MAX_PREFIX_LENGTH)),
vlink_addr->ip, MAX_PREFIX_LENGTH, OPT_PX_LA, 0);
i++;
}
struct ospf_stubnet_config *sn;
WALK_LIST(sn, oa->ac->stubnet_list)
@ -1227,6 +1244,7 @@ prefix_advance(u32 *buf)
return buf + IPV6_PREFIX_WORDS(pxl);
}
/* FIXME eliminate items wit LA bit set? see 4.4.3.9 */
static void
add_prefix(struct proto_ospf *po, u32 *px, int offset, int *pxc)
{

7
proto/ospf/topology.h
View file

@ -21,8 +21,11 @@ struct top_hash_entry
void *lsa_body;
bird_clock_t inst_t; /* Time of installation into DB */
ip_addr nh; /* Next hop */
ip_addr lb; /* Link back */
struct ospf_iface *nhi; /* Next hop interface */
ip_addr lb; /* In OSPFv2, link back address. In OSPFv3, any global address in the area useful for vlinks */
struct ospf_iface *nhi; /* Next hop interface - valid only in ospf_rt_spf()*/
#ifdef OSPFv3
u32 lb_id; /* Interface ID of link back iface (for bcast or NBMA networks) */
#endif
u32 dist; /* Distance from the root */
u16 ini_age;
u8 color;

14
sysdep/unix/io.c
View file

@ -7,6 +7,10 @@
* Can be freely distributed and used under the terms of the GNU GPL.
*/
/* Unfortunately, some glibc versions hide parts of RFC 3542 API
if _GNU_SOURCE is not defined. */
#define _GNU_SOURCE 1
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
@ -668,6 +672,16 @@ get_sockaddr(struct sockaddr_in *sa, ip_addr *a, unsigned *port, int check)
#define CMSG_RX_SPACE CMSG_SPACE(sizeof(struct in6_pktinfo))
#define CMSG_TX_SPACE CMSG_SPACE(sizeof(struct in6_pktinfo))
/*
* RFC 2292 uses IPV6_PKTINFO for both the socket option and the cmsg
* type, RFC 3542 changed the socket option to IPV6_RECVPKTINFO. If we
* don't have IPV6_RECVPKTINFO we suppose the OS implements the older
* RFC and we use IPV6_PKTINFO.
*/
#ifndef IPV6_RECVPKTINFO
#define IPV6_RECVPKTINFO IPV6_PKTINFO
#endif
static char *
sysio_register_cmsgs(sock *s)
{