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examples/pipeline: improve learner table timers

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Added the rearm counter to the statistics. Updated the learner table
example to the new learner table timer operation.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
This commit is contained in:
Cristian Dumitrescu 2022-05-20 23:12:55 +01:00 committed by Thomas Monjalon
parent e2ecc53582
commit 80dd28aff8
2 changed files with 15 additions and 2 deletions
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2
examples/pipeline/cli.c
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@ -2677,12 +2677,14 @@ cmd_pipeline_stats(char **tokens,
"\t\tMiss (packets): %" PRIu64 "\n"
"\t\tLearn OK (packets): %" PRIu64 "\n"
"\t\tLearn error (packets): %" PRIu64 "\n"
"\t\tRearm (packets): %" PRIu64 "\n"
"\t\tForget (packets): %" PRIu64 "\n",
learner_info.name,
stats.n_pkts_hit,
stats.n_pkts_miss,
stats.n_pkts_learn_ok,
stats.n_pkts_learn_err,
stats.n_pkts_rearm,
stats.n_pkts_forget);
out_size -= strlen(out);
out += strlen(out);

15
examples/pipeline/examples/learner.spec
View File

@ -48,6 +48,9 @@ struct metadata_t {
bit<32> port_in
bit<32> port_out
// Key timeout.
bit<32> timeout_id
// Arguments for the "fwd_action" action.
bit<32> fwd_action_arg_port_out
}
@ -68,10 +71,14 @@ struct fwd_action_args_t {
action fwd_action args instanceof fwd_action_args_t {
mov m.port_out t.port_out
rearm
return
}
action learn_action args none {
// Pick the key timeout. Timeout ID #1 (i.e. 120 seconds) is selected.
mov m.timeout_id 1
// Read current counter value into m.fwd_action_arg_port_out.
regrd m.fwd_action_arg_port_out counter 0
@ -84,7 +91,7 @@ action learn_action args none {
// Add the current lookup key to the table with fwd_action as the key action. The action
// arguments are read from the packet meta-data (the m.fwd_action_arg_port_out field). These
// packet meta-data fields have to be written before the "learn" instruction is invoked.
learn fwd_action m.fwd_action_arg_port_out
learn fwd_action m.fwd_action_arg_port_out m.timeout_id
// Send the current packet to the same output port.
mov m.port_out m.fwd_action_arg_port_out
@ -110,7 +117,11 @@ learner fwd_table {
size 1048576
timeout 120
timeout {
60
120
180
}
}
//