diff mbox series

[1/4] pipeline: improve the drop instruction

Message ID 20211126235129.35781-1-cristian.dumitrescu@intel.com (mailing list archive)
State Superseded
Headers show
Series [1/4] pipeline: improve the drop instruction | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Cristian Dumitrescu Nov. 26, 2021, 11:51 p.m. UTC
The output port to be used as the drop port is now determined when the
drop instruction is executed as opposed to being statically determined
at instruction translation time and hardcoded in the opcode.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Yogesh Jangra <yogesh.jangra@intel.com>:
---
 lib/pipeline/rte_swx_pipeline.c          | 38 ++++++++++++++++++------
 lib/pipeline/rte_swx_pipeline_internal.h | 20 +++++++++++++
 2 files changed, 49 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/lib/pipeline/rte_swx_pipeline.c b/lib/pipeline/rte_swx_pipeline.c
index 2145ca0a42..ff2fe964a5 100644
--- a/lib/pipeline/rte_swx_pipeline.c
+++ b/lib/pipeline/rte_swx_pipeline.c
@@ -1370,6 +1370,7 @@  instruction_is_tx(enum instruction_type type)
 	switch (type) {
 	case INSTR_TX:
 	case INSTR_TX_I:
+	case INSTR_DROP:
 		return 1;
 
 	default:
@@ -1383,6 +1384,7 @@  instruction_does_tx(struct instruction *instr)
 	switch (instr->type) {
 	case INSTR_TX:
 	case INSTR_TX_I:
+	case INSTR_DROP:
 	case INSTR_HDR_EMIT_TX:
 	case INSTR_HDR_EMIT2_TX:
 	case INSTR_HDR_EMIT3_TX:
@@ -1591,7 +1593,7 @@  instr_tx_translate(struct rte_swx_pipeline *p,
 }
 
 static int
-instr_drop_translate(struct rte_swx_pipeline *p,
+instr_drop_translate(struct rte_swx_pipeline *p __rte_unused,
 		     struct action *action __rte_unused,
 		     char **tokens __rte_unused,
 		     int n_tokens,
@@ -1600,9 +1602,8 @@  instr_drop_translate(struct rte_swx_pipeline *p,
 {
 	CHECK(n_tokens == 1, EINVAL);
 
-	/* TX_I. */
-	instr->type = INSTR_TX_I;
-	instr->io.io.val = p->n_ports_out - 1;
+	/* DROP. */
+	instr->type = INSTR_DROP;
 	return 0;
 }
 
@@ -1632,6 +1633,19 @@  instr_tx_i_exec(struct rte_swx_pipeline *p)
 	instr_rx_exec(p);
 }
 
+static inline void
+instr_drop_exec(struct rte_swx_pipeline *p)
+{
+	struct thread *t = &p->threads[p->thread_id];
+	struct instruction *ip = t->ip;
+
+	__instr_drop_exec(p, t, ip);
+
+	/* Thread. */
+	thread_ip_reset(p, t);
+	instr_rx_exec(p);
+}
+
 /*
  * extract.
  */
@@ -6199,7 +6213,7 @@  instr_pattern_emit_many_tx_search(struct instruction *instr,
 	if (!i)
 		return 0;
 
-	if (!instruction_is_tx(instr[i].type))
+	if (instr[i].type != INSTR_TX)
 		return 0;
 
 	if (data[i].n_users)
@@ -6643,6 +6657,7 @@  static instr_exec_t instruction_table[] = {
 	[INSTR_RX] = instr_rx_exec,
 	[INSTR_TX] = instr_tx_exec,
 	[INSTR_TX_I] = instr_tx_i_exec,
+	[INSTR_DROP] = instr_drop_exec,
 
 	[INSTR_HDR_EXTRACT] = instr_hdr_extract_exec,
 	[INSTR_HDR_EXTRACT2] = instr_hdr_extract2_exec,
@@ -9901,6 +9916,7 @@  instr_type_to_name(struct instruction *instr)
 
 	case INSTR_TX: return "INSTR_TX";
 	case INSTR_TX_I: return "INSTR_TX_I";
+	case INSTR_DROP: return "INSTR_DROP";
 
 	case INSTR_HDR_EXTRACT: return "INSTR_HDR_EXTRACT";
 	case INSTR_HDR_EXTRACT2: return "INSTR_HDR_EXTRACT2";
@@ -10126,8 +10142,9 @@  instr_io_export(struct instruction *instr, FILE *f)
 		instr_type_to_name(instr));
 
 	/* instr.io. */
-	fprintf(f,
-		"\t\t.io = {\n");
+	if (n_io || n_io_imm || n_hdrs)
+		fprintf(f,
+			"\t\t.io = {\n");
 
 	/* instr.io.io. */
 	if (n_io)
@@ -10193,8 +10210,9 @@  instr_io_export(struct instruction *instr, FILE *f)
 	}
 
 	/* instr.io - closing curly brace. */
-	fprintf(f,
-		"\t\t},\n");
+	if (n_io || n_io_imm || n_hdrs)
+		fprintf(f,
+			"\t\t},\n");
 
 	/* instr - closing curly brace. */
 	fprintf(f,
@@ -10767,6 +10785,7 @@  static instruction_export_t export_table[] = {
 
 	[INSTR_TX] = instr_io_export,
 	[INSTR_TX_I] = instr_io_export,
+	[INSTR_DROP] = instr_io_export,
 
 	[INSTR_HDR_EXTRACT] = instr_io_export,
 	[INSTR_HDR_EXTRACT2] = instr_io_export,
@@ -10984,6 +11003,7 @@  instr_type_to_func(struct instruction *instr)
 
 	case INSTR_TX: return "__instr_tx_exec";
 	case INSTR_TX_I: return "__instr_tx_i_exec";
+	case INSTR_DROP: return "__instr_drop_exec";
 
 	case INSTR_HDR_EXTRACT: return "__instr_hdr_extract_exec";
 	case INSTR_HDR_EXTRACT2: return "__instr_hdr_extract2_exec";
diff --git a/lib/pipeline/rte_swx_pipeline_internal.h b/lib/pipeline/rte_swx_pipeline_internal.h
index 1921fdcd78..2e86383e45 100644
--- a/lib/pipeline/rte_swx_pipeline_internal.h
+++ b/lib/pipeline/rte_swx_pipeline_internal.h
@@ -225,6 +225,7 @@  enum instruction_type {
 	 */
 	INSTR_TX,   /* port_out = M */
 	INSTR_TX_I, /* port_out = I */
+	INSTR_DROP,
 
 	/* extract h.header */
 	INSTR_HDR_EXTRACT,
@@ -1631,6 +1632,25 @@  __instr_tx_i_exec(struct rte_swx_pipeline *p, struct thread *t, const struct ins
 	port->pkt_tx(port->obj, pkt);
 }
 
+static inline void
+__instr_drop_exec(struct rte_swx_pipeline *p,
+		  struct thread *t,
+		  const struct instruction *ip __rte_unused)
+{
+	uint64_t port_id = p->n_ports_out - 1;
+	struct port_out_runtime *port = &p->out[port_id];
+	struct rte_swx_pkt *pkt = &t->pkt;
+
+	TRACE("[Thread %2u]: drop 1 pkt\n",
+	      p->thread_id);
+
+	/* Headers. */
+	emit_handler(t);
+
+	/* Packet. */
+	port->pkt_tx(port->obj, pkt);
+}
+
 /*
  * extract.
  */