cxgbetool(8): Userspace part of support for high priority filters on T6+.

MFC after:	1 week
Sponsored by:	Chelsio Communications

usr.sbin/cxgbetool/cxgbetool.8

@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 14, 2018
+.Dd Aug 8, 2018
 .Dt CXGBETOOL 8
 .Os
 .Sh NAME
@@ -60,7 +60,7 @@
 .It
 .Nm Ar nexus Cm filter Ar idx Ar filter-specification
 .It
-.Nm Ar nexus Cm filter Ar idx Cm delete
+.Nm Ar nexus Cm filter Ar idx Cm delete Op Cm prio Bro Cm 0 | 1 Brc
 .It
 .Nm Ar nexus Cm filter list
 .It
@@ -381,7 +381,7 @@ TCAM filters: The number of available filters is in
 dev.<nexus>.<instance>.nfilters.
 .Ar idx
 must be an unused index between 0 and nfilters - 1.
-IPv6 filters consume 4 consecutive entries on T4/T5 and and 2 on T6 and
+IPv6 filters consume 4 consecutive entries on T4/T5 and 2 on T6 and
 .Ar idx
 must be aligned to 4 or 2 in this case.
 .Pp

usr.sbin/cxgbetool/cxgbetool.c

@@ -94,7 +94,7 @@ usage(FILE *fp)
 	    "\tcontext <type> <id>                 show an SGE context\n"
 	    "\tdumpstate <dump.bin>                dump chip state\n"
 	    "\tfilter <idx> [<param> <val>] ...    set a filter\n"
-	    "\tfilter <idx> delete|clear           delete a filter\n"
+	    "\tfilter <idx> delete|clear [prio 1]  delete a filter\n"
 	    "\tfilter list                         list all filters\n"
 	    "\tfilter mode [<match>] ...           get/set global filter mode\n"
 	    "\thashfilter [<param> <val>] ...      set a hashfilter\n"
@@ -147,7 +147,6 @@ real_doit(unsigned long cmd, void *data, const char *cmdstr)
 			rc = errno;
 			return (rc);
 		}
-		chip_id = nexus[1] - '0';
 	}
 
 	rc = ioctl(fd, cmd, data);
@@ -934,7 +933,7 @@ do_show_one_filter_info(struct t4_filter *t, uint32_t mode)
 				printf("(hash)");
 		}
 	}
-	if (t->fs.prio)
+	if (chip_id <= 5 && t->fs.prio)
 		printf(" Prio");
 	if (t->fs.rpttid)
 		printf(" RptTID");
@@ -944,7 +943,7 @@ do_show_one_filter_info(struct t4_filter *t, uint32_t mode)
 static int
 show_filters(int hash)
 {
-	uint32_t mode = 0, header = 0;
+	uint32_t mode = 0, header, hpfilter = 0;
 	struct t4_filter t;
 	int rc;
 
@@ -953,6 +952,29 @@ show_filters(int hash)
 	if (rc != 0)
 		return (rc);
 
+	if (!hash && chip_id >= 6) {
+		header = 0;
+		bzero(&t, sizeof (t));
+		t.idx = 0;
+		t.fs.hash = 0;
+		t.fs.prio = 1;
+		for (t.idx = 0; ; t.idx++) {
+			rc = doit(CHELSIO_T4_GET_FILTER, &t);
+			if (rc != 0 || t.idx == 0xffffffff)
+				break;
+
+			if (!header) {
+				printf("High Priority TCAM Region:\n");
+				do_show_info_header(mode);
+				header = 1;
+				hpfilter = 1;
+			}
+			do_show_one_filter_info(&t, mode);
+		}
+	}
+
+	header = 0;
+	bzero(&t, sizeof (t));
 	t.idx = 0;
 	t.fs.hash = hash;
 	for (t.idx = 0; ; t.idx++) {
@@ -961,11 +983,13 @@ show_filters(int hash)
 			break;
 
 		if (!header) {
+			if (hpfilter)
+				printf("\nNormal Priority TCAM Region:\n");
 			do_show_info_header(mode);
 			header = 1;
 		}
 		do_show_one_filter_info(&t, mode);
-	};
+	}
 
 	return (rc);
 }
@@ -1092,10 +1116,11 @@ set_filter_mode(int argc, const char *argv[])
 }
 
 static int
-del_filter(uint32_t idx, int hashfilter)
+del_filter(uint32_t idx, int prio, int hashfilter)
 {
 	struct t4_filter t;
 
+	t.fs.prio = prio;
 	t.fs.hash = hashfilter;
 	t.idx = idx;
 
@@ -1225,6 +1250,15 @@ set_filter(uint32_t idx, int argc, const char *argv[], int hash)
 		} else if (!parse_val("hitcnts", args, &val)) {
 			t.fs.hitcnts = val;
 		} else if (!parse_val("prio", args, &val)) {
+			if (hash) {
+				warnx("Hashfilters doesn't support \"prio\"\n");
+				return (EINVAL);
+			}
+			if (val != 0 && val != 1) {
+				warnx("invalid priority \"%s\"; must be"
+				     " \"0\" or \"1\"", argv[start_arg + 1]);
+				return (EINVAL);
+			}
 			t.fs.prio = val;
 		} else if (!parse_val("rpttid", args, &val)) {
 			t.fs.rpttid = 1;
@@ -1406,10 +1440,33 @@ filter_cmd(int argc, const char *argv[], int hashfilter)
 	}
 	idx = (uint32_t) val;
 
-	/* <idx> delete|clear */
-	if (argc == 2 &&
+	/* <idx> delete|clear [prio 0|1] */
+	if ((argc == 2 || argc == 4) &&
 	    (strcmp(argv[1], "delete") == 0 || strcmp(argv[1], "clear") == 0)) {
-		return del_filter(idx, hashfilter);
+		int prio = 0;
+
+		if (argc == 4) {
+			if (hashfilter) {
+				warnx("stray arguments after \"%s\".", argv[1]);
+				return (EINVAL);
+			}
+
+			if (strcmp(argv[2], "prio") != 0) {
+				warnx("\"prio\" is the only valid keyword "
+				    "after \"%s\", found \"%s\" instead.",
+				    argv[1], argv[2]);
+				return (EINVAL);
+			}
+
+			s = str_to_number(argv[3], NULL, &val);
+			if (*s || val < 0 || val > 1) {
+				warnx("%s \"%s\"; must be \"0\" or \"1\".",
+				    argv[2], argv[3]);
+				return (EINVAL);
+			}
+			prio = (int)val;
+		}
+		return del_filter(idx, prio, hashfilter);
 	}
 
 	/* skip <idx> */
@@ -3557,6 +3614,7 @@ main(int argc, const char *argv[])
 	}
 
 	nexus = argv[1];
+	chip_id = nexus[1] - '0';
 
 	/* progname and nexus */
 	argc -= 2;