*
* The 'stats' and 'used' members point to 64-bit data that might only be
* aligned on 32-bit boundaries, so get_unaligned_u64() should be used to
- * access their values. */
+ * access their values.
+ *
+ * If 'actions' is nonnull then ODP_FLOW_ATTR_ACTIONS will be included in
+ * the Netlink version of the command, even if actions_len is zero. */
const struct nlattr *key; /* ODP_FLOW_ATTR_KEY. */
size_t key_len;
const struct nlattr *actions; /* ODP_FLOW_ATTR_ACTIONS. */
open_dpif(const struct dpif_linux_dp *dp, struct dpif **dpifp)
{
struct dpif_linux *dpif;
- char *name;
int error;
int i;
dpif_init(&dpif->dpif, &dpif_linux_class, dp->name,
dp->dp_ifindex, dp->dp_ifindex);
- free(name);
dpif->mc_sock = NULL;
for (i = 0; i < DPIF_N_UC_TYPES; i++) {
}
static int
-dpif_linux_flow_get(const struct dpif *dpif_,
- const struct nlattr *key, size_t key_len,
- struct ofpbuf **actionsp, struct dpif_flow_stats *stats)
+dpif_linux_flow_get__(const struct dpif *dpif_,
+ const struct nlattr *key, size_t key_len,
+ struct dpif_linux_flow *reply, struct ofpbuf **bufp)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- struct dpif_linux_flow request, reply;
- struct ofpbuf *buf;
- int error;
+ struct dpif_linux_flow request;
dpif_linux_flow_init(&request);
request.cmd = ODP_FLOW_CMD_GET;
request.dp_ifindex = dpif->dp_ifindex;
request.key = key;
request.key_len = key_len;
- error = dpif_linux_flow_transact(&request, &reply, &buf);
+ return dpif_linux_flow_transact(&request, reply, bufp);
+}
+
+static int
+dpif_linux_flow_get(const struct dpif *dpif_,
+ const struct nlattr *key, size_t key_len,
+ struct ofpbuf **actionsp, struct dpif_flow_stats *stats)
+{
+ struct dpif_linux_flow reply;
+ struct ofpbuf *buf;
+ int error;
+
+ error = dpif_linux_flow_get__(dpif_, key, key_len, &reply, &buf);
if (!error) {
if (stats) {
dpif_linux_flow_get_stats(&reply, stats);
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
struct dpif_linux_flow request, reply;
+ struct nlattr dummy_action;
struct ofpbuf *buf;
int error;
request.dp_ifindex = dpif->dp_ifindex;
request.key = key;
request.key_len = key_len;
- request.actions = actions;
+ /* Ensure that ODP_FLOW_ATTR_ACTIONS will always be included. */
+ request.actions = actions ? actions : &dummy_action;
request.actions_len = actions_len;
if (flags & DPIF_FP_ZERO_STATS) {
request.clear = true;
struct nl_dump dump;
struct dpif_linux_flow flow;
struct dpif_flow_stats stats;
+ struct ofpbuf *buf;
};
static int
nl_dump_start(&state->dump, genl_sock, buf);
ofpbuf_delete(buf);
+ state->buf = NULL;
+
return 0;
}
struct ofpbuf buf;
int error;
- if (!nl_dump_next(&state->dump, &buf)) {
- return EOF;
- }
+ do {
+ ofpbuf_delete(state->buf);
+ state->buf = NULL;
- error = dpif_linux_flow_from_ofpbuf(&state->flow, &buf);
- if (!error) {
- if (key) {
- *key = state->flow.key;
- *key_len = state->flow.key_len;
+ if (!nl_dump_next(&state->dump, &buf)) {
+ return EOF;
}
- if (actions) {
- *actions = state->flow.actions;
- *actions_len = state->flow.actions_len;
+
+ error = dpif_linux_flow_from_ofpbuf(&state->flow, &buf);
+ if (error) {
+ return error;
}
- if (stats) {
- dpif_linux_flow_get_stats(&state->flow, &state->stats);
- *stats = &state->stats;
+
+ if (actions && !state->flow.actions) {
+ error = dpif_linux_flow_get__(dpif_, state->flow.key,
+ state->flow.key_len,
+ &state->flow, &state->buf);
+ if (error == ENOENT) {
+ VLOG_DBG("dumped flow disappeared on get");
+ } else if (error) {
+ VLOG_WARN("error fetching dumped flow: %s", strerror(error));
+ }
}
+ } while (error);
+
+ if (actions) {
+ *actions = state->flow.actions;
+ *actions_len = state->flow.actions_len;
+ }
+ if (key) {
+ *key = state->flow.key;
+ *key_len = state->flow.key_len;
+ }
+ if (stats) {
+ dpif_linux_flow_get_stats(&state->flow, &state->stats);
+ *stats = &state->stats;
}
return error;
}
{
struct dpif_linux_flow_state *state = state_;
int error = nl_dump_done(&state->dump);
+ ofpbuf_delete(state->buf);
free(state);
return error;
}
dpif_linux_enumerate,
dpif_linux_open,
dpif_linux_close,
- NULL, /* get_all_names */
dpif_linux_destroy,
dpif_linux_get_stats,
dpif_linux_get_drop_frags,
}
if (a[ODP_VPORT_ATTR_MTU]) {
vport->mtu = nl_attr_get_u32(a[ODP_VPORT_ATTR_MTU]);
+ } else {
+ vport->mtu = INT_MAX;
}
if (a[ODP_VPORT_ATTR_OPTIONS]) {
vport->options = nl_attr_get(a[ODP_VPORT_ATTR_OPTIONS]);
vport->address, ETH_ADDR_LEN);
}
- if (vport->mtu) {
+ if (vport->mtu && vport->mtu != INT_MAX) {
nl_msg_put_u32(buf, ODP_VPORT_ATTR_MTU, vport->mtu);
}
if (a[ODP_FLOW_ATTR_TCP_FLAGS]) {
flow->tcp_flags = nl_attr_get(a[ODP_FLOW_ATTR_TCP_FLAGS]);
}
+ if (a[ODP_FLOW_ATTR_USED]) {
+ flow->used = nl_attr_get(a[ODP_FLOW_ATTR_USED]);
+ }
return 0;
}
struct odp_header *odp_header;
nl_msg_put_genlmsghdr(buf, 0, odp_flow_family,
- NLM_F_REQUEST | flow->nlmsg_flags, flow->cmd, 1);
+ NLM_F_REQUEST | NLM_F_ECHO | flow->nlmsg_flags,
+ flow->cmd, 1);
odp_header = ofpbuf_put_uninit(buf, sizeof *odp_header);
odp_header->dp_ifindex = flow->dp_ifindex;
nl_msg_put_unspec(buf, ODP_FLOW_ATTR_KEY, flow->key, flow->key_len);
}
- if (flow->actions_len) {
+ if (flow->actions || flow->actions_len) {
nl_msg_put_unspec(buf, ODP_FLOW_ATTR_ACTIONS,
flow->actions, flow->actions_len);
}