Commit e7ef86a5 authored by Ondřej Filip's avatar Ondřej Filip

OSPF is ready for changing MTU.

parent f158bb71
......@@ -45,6 +45,7 @@ sock *sk_new(pool *); /* Allocate new socket */
int sk_open(sock *); /* Open socket */
int sk_send(sock *, unsigned len); /* Send data, <0=err, >0=ok, 0=sleep */
int sk_send_to(sock *, unsigned len, ip_addr to, unsigned port); /* sk_send to given destination */
void sk_reallocate(sock *); /* Free and allocate tbuf & rbuf */
void sk_dump_all(void);
static inline int
......
......@@ -119,6 +119,12 @@ ospf_dbdes_send(struct ospf_neighbor *n)
case NEIGHBOR_FULL:
length = ntohs(((struct ospf_packet *)n)->length);
if(!length)
{
OSPF_TRACE(D_PACKETS, "No packet in my buffer for repeating");
ospf_neigh_sm(n, INM_KILLNBR);
}
memcpy(ifa->ip_sk->tbuf, n->ldbdes, length);
/* Copy last sent packet again */
......
......@@ -430,8 +430,23 @@ ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
{
if((ifa=find_iface((struct proto_ospf *)p, iface))!=NULL)
{
struct ospf_packet *op;
struct ospf_neighbor *n;
OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s.", iface->name);
/* FIXME: change MTU */
sk_reallocate(ifa->hello_sk);
sk_reallocate(ifa->dr_sk);
sk_reallocate(ifa->ip_sk);
WALK_LIST(n,ifa->neigh_list)
{
op = (struct ospf_packet *)n->ldbdes;
n->ldbdes = mb_allocz(n->pool, iface->mtu);
if(ntohs(op->length) <= iface->mtu) /* If the packet in old buffer is bigger, let it filled by zeros */
memcpy(n->ldbdes, op, iface->mtu); /* If the packet is old is same or smaller, copy it */
rfree(op);
}
}
}
}
......
......@@ -38,7 +38,7 @@ ospf_neighbor_new(struct ospf_iface *ifa)
n->ifa = ifa;
add_tail(&ifa->neigh_list, NODE n);
n->adj = 0;
n->ldbdes=mb_alloc(pool, ifa->iface->mtu);
n->ldbdes=mb_allocz(pool, ifa->iface->mtu);
n->state=NEIGHBOR_DOWN;
n->inactim = tm_new(pool);
......
......@@ -599,6 +599,20 @@ sk_alloc_bufs(sock *s)
s->tpos = s->ttx = s->tbuf;
}
void
sk_reallocate(sock *s)
{
if(!s) return;
if (s->rbuf_alloc)
xfree(s->rbuf_alloc);
s->rbuf = NULL;
if (s->tbuf_alloc)
xfree(s->tbuf_alloc);
s->tbuf = NULL;
sk_alloc_bufs(s);
}
static void
sk_tcp_connected(sock *s)
{
......
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