xref: /titanic_44/usr/src/uts/common/io/dls/dls_stat.c (revision 2b4a78020b9c38d1b95e2f3fefa6d6e4be382d1f)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * Data-Link Services Module
30  */
31 
32 #include <sys/types.h>
33 #include <sys/sysmacros.h>
34 #include <sys/atomic.h>
35 #include <sys/kstat.h>
36 #include <sys/vlan.h>
37 #include <sys/mac.h>
38 #include <sys/mac_ether.h>
39 #include <sys/ctype.h>
40 #include <sys/dls.h>
41 #include <sys/dls_impl.h>
42 
43 static mac_stat_info_t	i_dls_si[] = {
44 	{ MAC_STAT_IFSPEED, "ifspeed", KSTAT_DATA_UINT64, 0 },
45 	{ MAC_STAT_MULTIRCV, "multircv", KSTAT_DATA_UINT32, 0 },
46 	{ MAC_STAT_BRDCSTRCV, "brdcstrcv", KSTAT_DATA_UINT32, 0 },
47 	{ MAC_STAT_MULTIXMT, "multixmt", KSTAT_DATA_UINT32, 0 },
48 	{ MAC_STAT_BRDCSTXMT, "brdcstxmt", KSTAT_DATA_UINT32, 0 },
49 	{ MAC_STAT_NORCVBUF, "norcvbuf", KSTAT_DATA_UINT32, 0 },
50 	{ MAC_STAT_IERRORS, "ierrors", KSTAT_DATA_UINT32, 0 },
51 	{ MAC_STAT_NOXMTBUF, "noxmtbuf", KSTAT_DATA_UINT32, 0 },
52 	{ MAC_STAT_OERRORS, "oerrors", KSTAT_DATA_UINT32, 0 },
53 	{ MAC_STAT_COLLISIONS, "collisions", KSTAT_DATA_UINT32, 0 },
54 	{ MAC_STAT_RBYTES, "rbytes", KSTAT_DATA_UINT32, 0 },
55 	{ MAC_STAT_IPACKETS, "ipackets", KSTAT_DATA_UINT32, 0 },
56 	{ MAC_STAT_OBYTES, "obytes", KSTAT_DATA_UINT32, 0 },
57 	{ MAC_STAT_OPACKETS, "opackets", KSTAT_DATA_UINT32, 0 },
58 	{ MAC_STAT_RBYTES, "rbytes64", KSTAT_DATA_UINT64, 0 },
59 	{ MAC_STAT_IPACKETS, "ipackets64", KSTAT_DATA_UINT64, 0 },
60 	{ MAC_STAT_OBYTES, "obytes64", KSTAT_DATA_UINT64, 0 },
61 	{ MAC_STAT_OPACKETS, "opackets64", KSTAT_DATA_UINT64, 0 },
62 	{ MAC_STAT_LINK_STATE, "link_state", KSTAT_DATA_UINT32,
63 	    (uint64_t)LINK_STATE_UNKNOWN}
64 };
65 
66 #define	STAT_INFO_COUNT	(sizeof (i_dls_si) / sizeof (i_dls_si[0]))
67 
68 /*
69  * Private functions.
70  */
71 
72 static int
73 i_dls_mac_stat_update(kstat_t *ksp, int rw)
74 {
75 	dls_vlan_t	*dvp = ksp->ks_private;
76 
77 	return (dls_stat_update(ksp, dvp, rw));
78 }
79 
80 /*
81  * Exported functions.
82  */
83 int
84 dls_stat_update(kstat_t *ksp, dls_vlan_t *dvp, int rw)
85 {
86 	dls_link_t	*dlp = dvp->dv_dlp;
87 	kstat_named_t	*knp;
88 	uint_t		i;
89 	uint64_t	val;
90 	int		err;
91 
92 	if (rw != KSTAT_READ)
93 		return (EACCES);
94 
95 	if ((err = dls_mac_hold(dlp)) != 0)
96 		return (err);
97 
98 	knp = (kstat_named_t *)ksp->ks_data;
99 	for (i = 0; i < STAT_INFO_COUNT; i++) {
100 		val = mac_stat_get(dlp->dl_mh, i_dls_si[i].msi_stat);
101 
102 		switch (i_dls_si[i].msi_type) {
103 		case KSTAT_DATA_UINT64:
104 			knp->value.ui64 = val;
105 			break;
106 		case KSTAT_DATA_UINT32:
107 			knp->value.ui32 = (uint32_t)val;
108 			break;
109 		default:
110 			ASSERT(B_FALSE);
111 		}
112 
113 		knp++;
114 	}
115 
116 	/*
117 	 * Ethernet specific kstat "link_duplex"
118 	 */
119 	if (dlp->dl_mip->mi_nativemedia != DL_ETHER) {
120 		knp->value.ui32 = LINK_DUPLEX_UNKNOWN;
121 	} else {
122 		val = mac_stat_get(dlp->dl_mh, ETHER_STAT_LINK_DUPLEX);
123 		knp->value.ui32 = (uint32_t)val;
124 	}
125 	knp++;
126 	knp->value.ui32 = dlp->dl_unknowns;
127 	dls_mac_rele(dlp);
128 
129 	return (0);
130 }
131 
132 int
133 dls_stat_create(const char *module, int instance, const char *name,
134     int (*update)(struct kstat *, int), void *private, kstat_t **kspp)
135 {
136 	kstat_t		*ksp;
137 	kstat_named_t	*knp;
138 	uint_t		i;
139 
140 	if ((ksp = kstat_create(module, instance, name, "net",
141 	    KSTAT_TYPE_NAMED, STAT_INFO_COUNT + 2, 0)) == NULL) {
142 		return (EINVAL);
143 	}
144 
145 	ksp->ks_update = update;
146 	ksp->ks_private = private;
147 
148 	knp = (kstat_named_t *)ksp->ks_data;
149 	for (i = 0; i < STAT_INFO_COUNT; i++) {
150 		kstat_named_init(knp, i_dls_si[i].msi_name,
151 		    i_dls_si[i].msi_type);
152 		knp++;
153 	}
154 
155 	kstat_named_init(knp++, "link_duplex", KSTAT_DATA_UINT32);
156 	kstat_named_init(knp, "unknowns", KSTAT_DATA_UINT32);
157 	kstat_install(ksp);
158 	*kspp = ksp;
159 	return (0);
160 }
161 
162 void
163 dls_mac_stat_create(dls_vlan_t *dvp)
164 {
165 	kstat_t		*ksp = NULL;
166 	major_t		major;
167 
168 	/*
169 	 * Create the legacy kstats to provide backward compatibility.
170 	 * These kstats need to be created even when this link does not
171 	 * have a link name, i.e., when the VLAN is accessed using its
172 	 * /dev node.
173 	 *
174 	 * Note that we only need to create the legacy kstats for GLDv3
175 	 * physical links, aggregation links which are created using
176 	 * the 'key' option, and any VLAN links created over them.
177 	 * This can be determined by checking its dv_ppa.
178 	 */
179 	ASSERT(dvp->dv_ksp == NULL);
180 	if (dvp->dv_ppa >= MAC_MAX_MINOR)
181 		return;
182 
183 	major = getmajor(dvp->dv_dev);
184 	ASSERT(GLDV3_DRV(major) && (dvp->dv_ksp == NULL));
185 
186 	if (dls_stat_create(ddi_major_to_name(major),
187 	    dvp->dv_id * 1000 + dvp->dv_ppa, NULL,
188 	    i_dls_mac_stat_update, dvp, &ksp) != 0) {
189 		return;
190 	}
191 	ASSERT(ksp != NULL);
192 	dvp->dv_ksp = ksp;
193 }
194 
195 void
196 dls_mac_stat_destroy(dls_vlan_t *dvp)
197 {
198 	if (dvp->dv_ksp != NULL) {
199 		kstat_delete(dvp->dv_ksp);
200 		dvp->dv_ksp = NULL;
201 	}
202 }
203