On Thu, Jun 20, 2013 at 05:26:18PM +0300, Jarno Rajahalme wrote:
>
> Signed-off-by: Jarno Rajahalme <[email protected]>
I'm applied this to master. I'm appending the incremental that I
folded in. Most of the changes are minor improvements (some just
stylistic). The only important change is that it looked to me like
the OpenFlow parsing code in ofp-util.c didn't check that the lengths
were valid, so I adjusted them so that they did check.
I noticed that the tests seem to use impossible numbers of nanoseconds
(greater than 1e9), but I didn't change that other than the
formatting.
diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c
index f1f755b..f06edb1 100644
--- a/lib/ofp-parse.c
+++ b/lib/ofp-parse.c
@@ -48,12 +48,12 @@ static void ofp_fatal(const char *flow, bool verbose, const
char *format, ...)
static uint8_t
str_to_u8(const char *str, const char *name)
{
- int table_id;
+ int value;
- if (!str_to_int(str, 10, &table_id) || table_id < 0 || table_id > 255) {
+ if (!str_to_int(str, 10, &value) || value < 0 || value > 255) {
ovs_fatal(0, "invalid %s \"%s\"", name, str);
}
- return table_id;
+ return value;
}
static uint16_t
@@ -373,16 +373,6 @@ set_field_parse(const char *arg, struct ofpbuf *ofpacts)
}
static void
-parse_meter(struct ofpbuf *b, char *arg)
-{
- struct ofpact_meter *om;
-
- om = ofpact_put_METER(b);
-
- om->meter_id = str_to_u32(arg);
-}
-
-static void
parse_metadata(struct ofpbuf *b, char *arg)
{
struct ofpact_metadata *om;
@@ -717,7 +707,7 @@ parse_named_instruction(enum ovs_instruction_type type,
break;
case OVSINST_OFPIT13_METER:
- parse_meter(ofpacts, arg);
+ ofpact_put_METER(ofpacts)->meter_id = str_to_u32(arg);
break;
case OVSINST_OFPIT11_WRITE_METADATA:
diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index e554828..76bd09c 100644
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -1013,8 +1013,9 @@ ofp_print_meter_stats(struct ds *s, const struct
ofputil_meter_stats *ms)
ds_put_format(s, "flow_count:%"PRIu32" ", ms->flow_count);
ds_put_format(s, "packet_in_count:%"PRIu64" ", ms->packet_in_count);
ds_put_format(s, "byte_in_count:%"PRIu64" ", ms->byte_in_count);
- ds_put_format(s, "duration_sec:%"PRIu32" ", ms->duration_sec);
- ds_put_format(s, "duration_nsec:%"PRIu32" ", ms->duration_nsec);
+ ds_put_cstr(s, "duration:");
+ ofp_print_duration(s, ms->duration_sec, ms->duration_nsec);
+ ds_put_char(s, ' ');
ds_put_cstr(s, "bands:\n");
for (i = 0; i < ms->n_bands; ++i) {
@@ -1151,7 +1152,6 @@ ofp_print_meter_config_reply(struct ds *s, const struct
ofp_header *oh)
if (retval) {
if (retval != EOF) {
ofp_print_error(s, retval);
- /* ds_put_cstr(s, " ***parse error***"); */
}
break;
}
@@ -1177,7 +1177,6 @@ ofp_print_meter_stats_reply(struct ds *s, const struct
ofp_header *oh)
if (retval) {
if (retval != EOF) {
ofp_print_error(s, retval);
- /* ds_put_cstr(s, " ***parse error***"); */
}
break;
}
diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index 461e138..6c58415 100644
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -1639,7 +1639,10 @@ ofputil_pull_bands(struct ofpbuf *msg, size_t len,
uint16_t *n_bands,
struct ofputil_meter_band *mb;
uint16_t n = 0;
- ombh = ofpbuf_pull(msg, len);
+ ombh = ofpbuf_try_pull(msg, len);
+ if (!ombh) {
+ return OFPERR_OFPBRC_BAD_LEN;
+ }
while (len >= sizeof (struct ofp13_meter_band_drop)) {
size_t ombh_len = ntohs(ombh->len);
@@ -1669,7 +1672,12 @@ ofputil_decode_meter_mod(const struct ofp_header *oh,
struct ofputil_meter_mod *mm,
struct ofpbuf *bands)
{
- const struct ofp13_meter_mod *omm = ofpmsg_body(oh);
+ const struct ofp13_meter_mod *omm;
+ struct ofpbuf b;
+
+ ofpbuf_use_const(&b, oh, ntohs(oh->length));
+ ofpraw_pull_assert(&b);
+ omm = ofpbuf_pull(&b, sizeof *omm);
/* Translate the message. */
mm->command = ntohs(omm->command);
@@ -1680,15 +1688,11 @@ ofputil_decode_meter_mod(const struct ofp_header *oh,
mm->meter.n_bands = 0;
mm->meter.bands = NULL;
} else {
- struct ofpbuf b;
enum ofperr error;
mm->meter.flags = ntohs(omm->flags);
mm->meter.bands = bands->data;
- ofpbuf_use_const(&b, omm + 1,
- ntohs(oh->length) - sizeof *oh - sizeof *omm);
-
error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands,
bands);
if (error) {
@@ -1727,7 +1731,7 @@ ofputil_encode_meter_request(enum ofp_version ofp_version,
break;
}
- msg = ofpraw_alloc(raw, MAX(OFP13_VERSION, ofp_version), 0);
+ msg = ofpraw_alloc(raw, ofp_version, 0);
if (type != OFPUTIL_METER_FEATURES) {
struct ofp13_meter_multipart_request *omr;
@@ -1741,20 +1745,20 @@ static void
ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
struct ofpbuf *msg)
{
- struct ofp13_meter_band_dscp_remark *ombh;
uint16_t n = 0;
for (n = 0; n < n_bands; ++n) {
/* Currently all band types have same size */
+ struct ofp13_meter_band_dscp_remark *ombh;
size_t ombh_len = sizeof *ombh;
- ombh = ofpbuf_put_uninit(msg, ombh_len);
+
+ ombh = ofpbuf_put_zeros(msg, ombh_len);
ombh->type = htons(mb->type);
ombh->len = htons(ombh_len);
ombh->rate = htonl(mb->rate);
ombh->burst_size = htonl(mb->burst_size);
ombh->prec_level = mb->prec_level;
- memset(ombh->pad, 0, sizeof ombh->pad);
mb++;
}
@@ -1800,15 +1804,18 @@ ofputil_append_meter_stats(struct list *replies,
reply->duration_nsec = htonl(ms->duration_nsec);
for (n = 0; n < ms->n_bands; ++n) {
- reply->band_stats[n].packet_band_count
- = htonll(ms->bands[n].packet_count);
- reply->band_stats[n].byte_band_count = htonll(ms->bands[n].byte_count);
+ const struct ofputil_meter_band_stats *src = &ms->bands[n];
+ struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
+
+ dst->packet_band_count = htonll(src->packet_count);
+ dst->byte_band_count = htonll(src->byte_count);
}
}
/* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
- * ofputil_meter_config in 'mc', with mc->bands pointing to bands
- * decoded into 'bands'.
+ * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
+ * 'bands'. The caller must have initialized 'bands' and retains ownership of
+ * it across the call.
*
* Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
* message. Calling this function multiple times for a single 'msg' iterates
@@ -1822,12 +1829,10 @@ ofputil_decode_meter_config(struct ofpbuf *msg,
struct ofpbuf *bands)
{
const struct ofp13_meter_config *omc;
- uint16_t len;
enum ofperr err;
- /* pull OpenFlow headers for the first call */
+ /* Pull OpenFlow headers for the first call. */
if (!msg->l2) {
- msg->l2 = msg->data;
ofpraw_pull_assert(msg);
}
@@ -1837,28 +1842,22 @@ ofputil_decode_meter_config(struct ofpbuf *msg,
omc = ofpbuf_try_pull(msg, sizeof *omc);
if (!omc) {
- goto bad_len;
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OFPMP_METER_CONFIG reply has %zu "
+ "leftover bytes at end", msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
}
- len = ntohs(omc->length);
- len -= sizeof *omc;
ofpbuf_clear(bands);
- err = ofputil_pull_bands(msg, len, &mc->n_bands, bands);
+ err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
+ &mc->n_bands, bands);
if (err) {
- goto error;
+ return err;
}
mc->meter_id = ntohl(omc->meter_id);
mc->flags = ntohs(omc->flags);
mc->bands = bands->data;
return 0;
-
- bad_len:
- err = OFPERR_OFPBRC_BAD_LEN;
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPMP_METER_CONFIG reply has %zu leftover "
- "bytes at end", msg->size);
- error:
- return err;
}
static enum ofperr
@@ -1905,9 +1904,8 @@ ofputil_decode_meter_stats(struct ofpbuf *msg,
uint16_t len;
enum ofperr err;
- /* pull OpenFlow headers for the first call */
+ /* Pull OpenFlow headers for the first call. */
if (!msg->l2) {
- msg->l2 = msg->data;
ofpraw_pull_assert(msg);
}
@@ -1917,7 +1915,9 @@ ofputil_decode_meter_stats(struct ofpbuf *msg,
oms = ofpbuf_try_pull(msg, sizeof *oms);
if (!oms) {
- goto bad_len;
+ VLOG_WARN_RL(&bad_ofmsg_rl, "OFPMP_METER reply has %zu leftover "
+ "bytes at end", msg->size);
+ return OFPERR_OFPBRC_BAD_LEN;
}
len = ntohs(oms->len);
len -= sizeof *oms;
@@ -1925,7 +1925,7 @@ ofputil_decode_meter_stats(struct ofpbuf *msg,
ofpbuf_clear(bands);
err = ofputil_pull_band_stats(msg, len, &ms->n_bands, bands);
if (err) {
- goto error;
+ return err;
}
ms->meter_id = ntohl(oms->meter_id);
ms->flow_count = ntohl(oms->flow_count);
@@ -1936,13 +1936,6 @@ ofputil_decode_meter_stats(struct ofpbuf *msg,
ms->bands = bands->data;
return 0;
-
- bad_len:
- err = OFPERR_OFPBRC_BAD_LEN;
- VLOG_WARN_RL(&bad_ofmsg_rl, "OFPMP_METER reply has %zu leftover "
- "bytes at end", msg->size);
- error:
- return err;
}
void
@@ -1985,8 +1978,7 @@ ofputil_encode_meter_mod(enum ofp_version ofp_version,
struct ofp13_meter_mod *omm;
- msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD,
- MAX(OFP13_VERSION, ofp_version), /* FIXME? */
+ msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
omm = ofpbuf_put_zeros(msg, sizeof *omm);
omm->command = htons(mm->command);
diff --git a/tests/ofp-print.at b/tests/ofp-print.at
index d6cfdf8..b3e3eb5 100644
--- a/tests/ofp-print.at
+++ b/tests/ofp-print.at
@@ -1661,11 +1661,11 @@ AT_CHECK([ovs-ofctl ofp-print "\
00 00 00 00 00 00 00 2a 00 00 00 00 00 00 04 33 \
"], [0], [dnl
OFPST_METER reply (OF1.3) (xid=0x2):
-meter:1 flow_count:5 packet_in_count:4096 byte_in_count:143360
duration_sec:394 duration_nsec:2590909252 bands:
+meter:1 flow_count:5 packet_in_count:4096 byte_in_count:143360
duration:394.2590909252s bands:
0: packet_count:126 byte_count:13363
1: packet_count:231 byte_count:37934
-meter:2 flow_count:2 packet_in_count:512 byte_in_count:12288 duration_sec:391
duration_nsec:2586013252 bands:
+meter:2 flow_count:2 packet_in_count:512 byte_in_count:12288
duration:391.2586013252s bands:
0: packet_count:42 byte_count:1075
])
AT_CLEANUP
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