#include "ofproto/ofproto-dpif-xlate.h"
+#include <errno.h>
+
#include "bfd.h"
#include "bitmap.h"
#include "bond.h"
struct hmap xports; /* Indexed by ofp_port. */
char *name; /* Name used in log messages. */
+ struct dpif *dpif; /* Datapath interface. */
struct mac_learning *ml; /* Mac learning handle. */
struct mbridge *mbridge; /* Mirroring. */
struct dpif_sflow *sflow; /* SFlow handle, or null. */
struct rule_dpif *rule;
int recurse; /* Recursion level, via xlate_table_action. */
- bool max_resubmit_trigger; /* Recursed too deeply during translation. */
uint32_t orig_skb_priority; /* Priority when packet arrived. */
uint8_t table_id; /* OpenFlow table ID where flow was found. */
uint32_t sflow_n_outputs; /* Number of output ports. */
static struct xbridge *xbridge_lookup(const struct ofproto_dpif *);
static struct xbundle *xbundle_lookup(const struct ofbundle *);
-static struct xport *xport_lookup(struct ofport_dpif *);
+static struct xport *xport_lookup(const struct ofport_dpif *);
static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port);
static struct skb_priority_to_dscp *get_skb_priority(const struct xport *,
uint32_t skb_priority);
void
xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name,
- const struct mac_learning *ml, struct stp *stp,
- const struct mbridge *mbridge,
+ struct dpif *dpif, const struct mac_learning *ml,
+ struct stp *stp, const struct mbridge *mbridge,
const struct dpif_sflow *sflow,
const struct dpif_ipfix *ipfix, enum ofp_config_flags frag,
bool forward_bpdu, bool has_in_band, bool has_netflow)
free(xbridge->name);
xbridge->name = xstrdup(name);
+ xbridge->dpif = dpif;
xbridge->forward_bpdu = forward_bpdu;
xbridge->has_in_band = has_in_band;
xbridge->has_netflow = has_netflow;
if (xport->peer) {
xport->peer->peer = NULL;
}
- xport->peer = peer ? xport_lookup(peer) : NULL;
+ xport->peer = xport_lookup(peer);
if (xport->peer) {
xport->peer->peer = xport;
}
if (xport->xbundle) {
list_remove(&xport->bundle_node);
}
- xport->xbundle = ofbundle ? xbundle_lookup(ofbundle) : NULL;
+ xport->xbundle = xbundle_lookup(ofbundle);
if (xport->xbundle) {
list_insert(&xport->xbundle->xports, &xport->bundle_node);
}
struct skb_priority_to_dscp *pdscp;
uint32_t skb_priority;
- if (ofproto_dpif_queue_to_priority(xport->xbridge->ofproto,
- qdscp_list[i].queue,
- &skb_priority)) {
+ if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue,
+ &skb_priority)) {
continue;
}
free(xport);
}
+/* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
+ * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
+ * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as
+ * returned by odp_flow_key_to_flow(). Also, optionally populates 'ofproto'
+ * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that
+ * 'packet' ingressed.
+ *
+ * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
+ * 'flow''s in_port to OFPP_NONE.
+ *
+ * This function does post-processing on data returned from
+ * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
+ * of the upcall processing logic. In particular, if the extracted in_port is
+ * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
+ * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
+ * a VLAN header onto 'packet' (if it is nonnull).
+ *
+ * Similarly, this function also includes some logic to help with tunnels. It
+ * may modify 'flow' as necessary to make the tunneling implementation
+ * transparent to the upcall processing logic.
+ *
+ * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
+ * or some other positive errno if there are other problems. */
+int
+xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet,
+ const struct nlattr *key, size_t key_len,
+ struct flow *flow, enum odp_key_fitness *fitnessp,
+ struct ofproto_dpif **ofproto, odp_port_t *odp_in_port)
+{
+ enum odp_key_fitness fitness;
+ const struct xport *xport;
+ int error = ENODEV;
+
+ fitness = odp_flow_key_to_flow(key, key_len, flow);
+ if (fitness == ODP_FIT_ERROR) {
+ error = EINVAL;
+ goto exit;
+ }
+
+ if (odp_in_port) {
+ *odp_in_port = flow->in_port.odp_port;
+ }
+
+ xport = xport_lookup(tnl_port_should_receive(flow)
+ ? tnl_port_receive(flow)
+ : odp_port_to_ofport(backer, flow->in_port.odp_port));
+
+ flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE;
+ if (!xport) {
+ goto exit;
+ }
+
+ if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) {
+ if (packet) {
+ /* Make the packet resemble the flow, so that it gets sent to
+ * an OpenFlow controller properly, so that it looks correct
+ * for sFlow, and so that flow_extract() will get the correct
+ * vlan_tci if it is called on 'packet'.
+ *
+ * The allocated space inside 'packet' probably also contains
+ * 'key', that is, both 'packet' and 'key' are probably part of
+ * a struct dpif_upcall (see the large comment on that
+ * structure definition), so pushing data on 'packet' is in
+ * general not a good idea since it could overwrite 'key' or
+ * free it as a side effect. However, it's OK in this special
+ * case because we know that 'packet' is inside a Netlink
+ * attribute: pushing 4 bytes will just overwrite the 4-byte
+ * "struct nlattr", which is fine since we don't need that
+ * header anymore. */
+ eth_push_vlan(packet, flow->vlan_tci);
+ }
+ /* We can't reproduce 'key' from 'flow'. */
+ fitness = fitness == ODP_FIT_PERFECT ? ODP_FIT_TOO_MUCH : fitness;
+ }
+ error = 0;
+
+ if (ofproto) {
+ *ofproto = xport->xbridge->ofproto;
+ }
+
+exit:
+ if (fitnessp) {
+ *fitnessp = fitness;
+ }
+ return error;
+}
+
static struct xbridge *
xbridge_lookup(const struct ofproto_dpif *ofproto)
{
struct xbridge *xbridge;
+ if (!ofproto) {
+ return NULL;
+ }
+
HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0),
&xbridges) {
if (xbridge->ofproto == ofproto) {
{
struct xbundle *xbundle;
+ if (!ofbundle) {
+ return NULL;
+ }
+
HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0),
&xbundles) {
if (xbundle->ofbundle == ofbundle) {
}
static struct xport *
-xport_lookup(struct ofport_dpif *ofport)
+xport_lookup(const struct ofport_dpif *ofport)
{
struct xport *xport;
+ if (!ofport) {
+ return NULL;
+ }
+
HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0),
&xports) {
if (xport->ofport == ofport) {
ofport = bond_choose_output_slave(out_xbundle->bond, &ctx->xin->flow,
&ctx->xout->wc, vid);
- xport = ofport ? xport_lookup(ofport) : NULL;
+ xport = xport_lookup(ofport);
if (!xport) {
/* No slaves enabled, so drop packet. */
const size_t cookie_size)
{
size_t sample_offset, actions_offset;
+ odp_port_t odp_port;
int cookie_offset;
+ uint32_t pid;
sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
- cookie_offset = put_userspace_action(xbridge->ofproto, odp_actions, flow,
- cookie, cookie_size);
+
+ odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port);
+ pid = dpif_port_get_pid(xbridge->dpif, odp_port);
+ cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, odp_actions);
nl_msg_end_nested(odp_actions, actions_offset);
nl_msg_end_nested(odp_actions, sample_offset);
VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
MAX_RESUBMIT_RECURSION);
- ctx->max_resubmit_trigger = true;
}
}
int error;
/* Translate queue to priority. */
- error = ofproto_dpif_queue_to_priority(ctx->xbridge->ofproto, queue_id,
- &priority);
+ error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority);
if (error) {
/* Fall back to ordinary output action. */
xlate_output_action(ctx, enqueue->port, 0, false);
{
uint32_t skb_priority;
- if (!ofproto_dpif_queue_to_priority(ctx->xbridge->ofproto, queue_id,
- &skb_priority)) {
+ if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) {
ctx->xin->flow.skb_priority = skb_priority;
} else {
/* Couldn't translate queue to a priority. Nothing to do. A warning
void
xlate_actions(struct xlate_in *xin, struct xlate_out *xout)
{
- /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
- * that in the future we always keep a copy of the original flow for
- * tracing purposes. */
- static bool hit_resubmit_limit;
-
struct flow_wildcards *wc = &xout->wc;
struct flow *flow = &xin->flow;
}
ctx.recurse = 0;
- ctx.max_resubmit_trigger = false;
ctx.orig_skb_priority = flow->skb_priority;
ctx.table_id = 0;
ctx.exit = false;
ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack);
- if (mbridge_has_mirrors(ctx.xbridge->mbridge) || hit_resubmit_limit) {
+ if (mbridge_has_mirrors(ctx.xbridge->mbridge)) {
/* Do this conditionally because the copy is expensive enough that it
* shows up in profiles. */
orig_flow = *flow;
if (special) {
ctx.xout->slow = special;
} else {
- static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
size_t sample_actions_len;
if (flow->in_port.ofp_port
}
}
- if (ctx.max_resubmit_trigger && !ctx.xin->resubmit_hook) {
- if (!hit_resubmit_limit) {
- /* We didn't record the original flow. Make sure we do from
- * now on. */
- hit_resubmit_limit = true;
- } else if (!VLOG_DROP_ERR(&trace_rl)) {
- struct ds ds = DS_EMPTY_INITIALIZER;
-
- ofproto_trace(ctx.xbridge->ofproto, &orig_flow,
- ctx.xin->packet, &ds);
- VLOG_ERR("Trace triggered by excessive resubmit "
- "recursion:\n%s", ds_cstr(&ds));
- ds_destroy(&ds);
- }
- }
-
if (ctx.xbridge->has_in_band
&& in_band_must_output_to_local_port(flow)
&& !actions_output_to_local_port(&ctx)) {