inline MPLS_OUT_OPCODE_PROTOTYPE(mpls_out_op_set)
{
struct dst_entry *dst = &(_mpls_as_nhlfe(data))->dst;
MPLS_ENTER;
/* Don't hold the dev we place in skb->dev, the dst is already
holding it for us */
skb_set_dev(*pskb, dst->dev);
mpls_nhlfe_hold(*nhlfe); /* dst_hold */
/*
* Update the dst field of the skbuff in "real time"
*/
skb_dst_set(*pskb, dst);
MPLS_EXIT;
return MPLS_RESULT_SUCCESS;
}
int
mpls_attach_in2out(struct mpls_xconnect_req *req)
{
struct mpls_instr *mi = NULL;
struct mpls_nhlfe *nhlfe = NULL;
struct mpls_ilm *ilm = NULL;
unsigned short op = 0;
int labelspace, key;
MPLS_ENTER;
labelspace = req->mx_in.ml_index;
/* Hold a ref to the ILM */
key = mpls_label2key(labelspace,&(req->mx_in));
ilm = mpls_get_ilm(key);
if (unlikely(!ilm)) {
MPLS_DEBUG("Node %u does not exist in radix tree\n",key);
MPLS_EXIT;
return -ESRCH;
}
/* Hold a ref to the NHLFE */
key = mpls_label2key(0,&(req->mx_out));
nhlfe = mpls_get_nhlfe(key);
if (unlikely(!nhlfe)) {
MPLS_DEBUG("Node %u does not exist in radix tree\n",key);
mpls_ilm_release(ilm);
MPLS_EXIT;
return -ESRCH;
}
if (unlikely(!ilm->ilm_instr)) {
MPLS_DEBUG("No instruction Set!")
mpls_ilm_release(ilm);
mpls_nhlfe_release(nhlfe);
MPLS_EXIT;
return -ESRCH;
}
/*
* Update the instructions: now, instead of "DLV"/"PEEK", now
* we "FWD". The NHLFE is not released (is held by the opcode).
*/
/* Lookup the last instr */
for (mi = ilm->ilm_instr; mi->mi_next;mi = mi->mi_next); /* nop*/
op = mi->mi_opcode;
switch (op) {
case MPLS_OP_DLV:
mi->mi_opcode = MPLS_OP_FWD;
mi->mi_data = (void*)nhlfe;
break;
case MPLS_OP_FWD:
mpls_xc_event(MPLS_CMD_DELXC, ilm,
_mpls_as_nhlfe(mi->mi_data));
mpls_nhlfe_release(_mpls_as_nhlfe(mi->mi_data));
mi->mi_data = (void*)nhlfe;
break;
case MPLS_OP_PEEK:
mi->mi_opcode = MPLS_OP_FWD;
mi->mi_data = (void*)nhlfe;
break;
}
mpls_xc_event(MPLS_CMD_NEWXC, ilm, nhlfe);
mpls_ilm_release(ilm);
return 0;
}