Esempio n. 1
0
static void
vr_flow_flush(void *arg)
{
    struct vrouter *router;
    struct vr_flow_entry *fe;
    struct vr_forwarding_md fmd;
    struct vr_flow_md *flmd = 
                (struct vr_flow_md *)arg;

    router = flmd->flmd_router;
    if (!router)
        return;

    fe = vr_get_flow_entry(router, flmd->flmd_index);
    if (!fe)
        return;

    vr_init_forwarding_md(&fmd);
    vr_flow_set_forwarding_md(router, fe, flmd->flmd_index, &fmd);

    vr_flush_entry(router, fe, flmd, &fmd);

    if (!(flmd->flmd_flags & VR_FLOW_FLAG_ACTIVE)) {
        vr_reset_flow_entry(router, fe, flmd->flmd_index);
    } 

    return;
}
Esempio n. 2
0
static void
vr_flow_table_reset(struct vrouter *router)
{
    unsigned int start, end, i;
    struct vr_flow_entry *fe;
    struct vr_forwarding_md fmd;
    struct vr_flow_md flmd;

    start = end = 0;
    if (router->vr_flow_table)
        end = vr_btable_entries(router->vr_flow_table);

    if (router->vr_oflow_table) {
        if (!end)
            start = vr_flow_entries;
        end += vr_btable_entries(router->vr_oflow_table);
    }

    if (end) {
        vr_init_forwarding_md(&fmd);
        flmd.flmd_action = VR_FLOW_ACTION_DROP;
        for (i = start; i < end; i++) {
            fe = vr_get_flow_entry(router, i);
            if (fe) {
                flmd.flmd_index = i;
                flmd.flmd_flags = fe->fe_flags;
                fe->fe_action = VR_FLOW_ACTION_DROP;
                vr_flush_entry(router, fe, &flmd, &fmd);
                vr_reset_flow_entry(router, fe, i);
            }
        }
    }

    vr_flow_table_info_reset(router);

    return;
}
Esempio n. 3
0
static struct vr_flow_entry *
vr_find_free_entry(struct vrouter *router, struct vr_flow *key, uint8_t type,
        bool need_hold, unsigned int *fe_index)
{
    unsigned int i, index, hash;
    struct vr_flow_entry *tmp_fe, *fe = NULL;

    *fe_index = 0;

    hash = vr_hash(key, key->flow_key_len, 0);

    index = (hash % vr_flow_entries) & ~(VR_FLOW_ENTRIES_PER_BUCKET - 1);
    for (i = 0; i < VR_FLOW_ENTRIES_PER_BUCKET; i++) {
        tmp_fe = vr_flow_table_entry_get(router, index);
        if (tmp_fe && !(tmp_fe->fe_flags & VR_FLOW_FLAG_ACTIVE)) {
            if (vr_set_flow_active(tmp_fe)) {
                vr_init_flow_entry(tmp_fe);
                fe = tmp_fe;
                break;
            }
        }
        index++;
    }

    if (!fe) {
        index = hash % vr_oflow_entries;
        for (i = 0; i < vr_oflow_entries; i++) {
            tmp_fe = vr_oflow_table_entry_get(router, index);
            if (tmp_fe && !(tmp_fe->fe_flags & VR_FLOW_FLAG_ACTIVE)) {
                if (vr_set_flow_active(tmp_fe)) {
                    vr_init_flow_entry(tmp_fe);
                    fe = tmp_fe;
                    break;
                }
            }
            index = (index + 1) % vr_oflow_entries;
        }

        if (fe)
            *fe_index += vr_flow_entries;
    }

    if (fe) {
        *fe_index += index;
        if (need_hold) {
            fe->fe_hold_list = vr_zalloc(sizeof(struct vr_flow_queue));
            if (!fe->fe_hold_list) {
                vr_reset_flow_entry(router, fe, *fe_index);
                fe = NULL;
            } else {
                fe->fe_hold_list->vfq_index = *fe_index;
            }
        }

        if (fe) {
            fe->fe_type = type;
            fe->fe_key.flow_key_len = key->flow_key_len;
            memcpy(&fe->fe_key, key, key->flow_key_len);
        }
    }

    return fe;
}