#include <zebra.h>
#include <stddef.h>
+#include <pthread.h>
#include "stream.h"
#include "memory.h"
#include "network.h"
#include "prefix.h"
#include "log.h"
+#include "lib_errors.h"
DEFINE_MTYPE_STATIC(LIB, STREAM, "Stream")
-DEFINE_MTYPE_STATIC(LIB, STREAM_DATA, "Stream data")
DEFINE_MTYPE_STATIC(LIB, STREAM_FIFO, "Stream FIFO")
/* Tests whether a position is valid */
assert(0); \
} while (0)
+#define STREAM_BOUND_WARN2(S, WHAT) \
+ do { \
+ zlog_warn("%s: Attempt to %s out of bounds", __func__, \
+ (WHAT)); \
+ STREAM_WARN_OFFSETS(S); \
+ } while (0)
+
/* XXX: Deprecated macro: do not use */
#define CHECK_SIZE(S, Z) \
do { \
assert(size > 0);
- s = XCALLOC(MTYPE_STREAM, sizeof(struct stream));
-
- if (s == NULL)
- return s;
-
- if ((s->data = XMALLOC(MTYPE_STREAM_DATA, size)) == NULL) {
- XFREE(MTYPE_STREAM, s);
- return NULL;
- }
+ s = XMALLOC(MTYPE_STREAM, sizeof(struct stream) + size);
+ s->getp = s->endp = 0;
+ s->next = NULL;
s->size = size;
return s;
}
if (!s)
return;
- XFREE(MTYPE_STREAM_DATA, s->data);
XFREE(MTYPE_STREAM, s);
}
return new;
}
-size_t stream_resize(struct stream *s, size_t newsize)
+size_t stream_resize_inplace(struct stream **sptr, size_t newsize)
{
- u_char *newdata;
- STREAM_VERIFY_SANE(s);
+ struct stream *orig = *sptr;
- newdata = XREALLOC(MTYPE_STREAM_DATA, s->data, newsize);
+ STREAM_VERIFY_SANE(orig);
- if (newdata == NULL)
- return s->size;
+ orig = XREALLOC(MTYPE_STREAM, orig, sizeof(struct stream) + newsize);
- s->data = newdata;
- s->size = newsize;
+ orig->size = newsize;
- if (s->endp > s->size)
- s->endp = s->size;
- if (s->getp > s->endp)
- s->getp = s->endp;
+ if (orig->endp > orig->size)
+ orig->endp = orig->size;
+ if (orig->getp > orig->endp)
+ orig->getp = orig->endp;
- STREAM_VERIFY_SANE(s);
+ STREAM_VERIFY_SANE(orig);
- return s->size;
+ *sptr = orig;
+ return orig->size;
+}
+
+size_t __attribute__((deprecated))stream_resize_orig(struct stream *s,
+ size_t newsize)
+{
+ assert("stream_resize: Switch code to use stream_resize_inplace" == NULL);
+
+ return stream_resize_inplace(&s, newsize);
}
size_t stream_get_getp(struct stream *s)
}
/* Copy from stream to destination. */
+inline bool stream_get2(void *dst, struct stream *s, size_t size)
+{
+ STREAM_VERIFY_SANE(s);
+
+ if (STREAM_READABLE(s) < size) {
+ STREAM_BOUND_WARN2(s, "get");
+ return false;
+ }
+
+ memcpy(dst, s->data + s->getp, size);
+ s->getp += size;
+
+ return true;
+}
+
void stream_get(void *dst, struct stream *s, size_t size)
{
STREAM_VERIFY_SANE(s);
}
/* Get next character from the stream. */
-u_char stream_getc(struct stream *s)
+inline bool stream_getc2(struct stream *s, uint8_t *byte)
{
- u_char c;
+ STREAM_VERIFY_SANE(s);
+
+ if (STREAM_READABLE(s) < sizeof(uint8_t)) {
+ STREAM_BOUND_WARN2(s, "get char");
+ return false;
+ }
+ *byte = s->data[s->getp++];
+
+ return true;
+}
+
+uint8_t stream_getc(struct stream *s)
+{
+ uint8_t c;
STREAM_VERIFY_SANE(s);
- if (STREAM_READABLE(s) < sizeof(u_char)) {
+ if (STREAM_READABLE(s) < sizeof(uint8_t)) {
STREAM_BOUND_WARN(s, "get char");
return 0;
}
}
/* Get next character from the stream. */
-u_char stream_getc_from(struct stream *s, size_t from)
+uint8_t stream_getc_from(struct stream *s, size_t from)
{
- u_char c;
+ uint8_t c;
STREAM_VERIFY_SANE(s);
- if (!GETP_VALID(s, from + sizeof(u_char))) {
+ if (!GETP_VALID(s, from + sizeof(uint8_t))) {
STREAM_BOUND_WARN(s, "get char");
return 0;
}
return c;
}
+inline bool stream_getw2(struct stream *s, uint16_t *word)
+{
+ STREAM_VERIFY_SANE(s);
+
+ if (STREAM_READABLE(s) < sizeof(uint16_t)) {
+ STREAM_BOUND_WARN2(s, "get ");
+ return false;
+ }
+
+ *word = s->data[s->getp++] << 8;
+ *word |= s->data[s->getp++];
+
+ return true;
+}
+
/* Get next word from the stream. */
-u_int16_t stream_getw(struct stream *s)
+uint16_t stream_getw(struct stream *s)
{
- u_int16_t w;
+ uint16_t w;
STREAM_VERIFY_SANE(s);
- if (STREAM_READABLE(s) < sizeof(u_int16_t)) {
+ if (STREAM_READABLE(s) < sizeof(uint16_t)) {
STREAM_BOUND_WARN(s, "get ");
return 0;
}
}
/* Get next word from the stream. */
-u_int16_t stream_getw_from(struct stream *s, size_t from)
+uint16_t stream_getw_from(struct stream *s, size_t from)
{
- u_int16_t w;
+ uint16_t w;
STREAM_VERIFY_SANE(s);
- if (!GETP_VALID(s, from + sizeof(u_int16_t))) {
+ if (!GETP_VALID(s, from + sizeof(uint16_t))) {
STREAM_BOUND_WARN(s, "get ");
return 0;
}
}
/* Get next 3-byte from the stream. */
-u_int32_t stream_get3_from(struct stream *s, size_t from)
+uint32_t stream_get3_from(struct stream *s, size_t from)
{
- u_int32_t l;
+ uint32_t l;
STREAM_VERIFY_SANE(s);
return l;
}
-u_int32_t stream_get3(struct stream *s)
+uint32_t stream_get3(struct stream *s)
{
- u_int32_t l;
+ uint32_t l;
STREAM_VERIFY_SANE(s);
}
/* Get next long word from the stream. */
-u_int32_t stream_getl_from(struct stream *s, size_t from)
+uint32_t stream_getl_from(struct stream *s, size_t from)
{
- u_int32_t l;
+ uint32_t l;
STREAM_VERIFY_SANE(s);
- if (!GETP_VALID(s, from + sizeof(u_int32_t))) {
+ if (!GETP_VALID(s, from + sizeof(uint32_t))) {
STREAM_BOUND_WARN(s, "get long");
return 0;
}
memcpy(dst, s->data + from, size);
}
-u_int32_t stream_getl(struct stream *s)
+inline bool stream_getl2(struct stream *s, uint32_t *l)
{
- u_int32_t l;
+ STREAM_VERIFY_SANE(s);
+
+ if (STREAM_READABLE(s) < sizeof(uint32_t)) {
+ STREAM_BOUND_WARN2(s, "get long");
+ return false;
+ }
+
+ *l = (unsigned int)(s->data[s->getp++]) << 24;
+ *l |= s->data[s->getp++] << 16;
+ *l |= s->data[s->getp++] << 8;
+ *l |= s->data[s->getp++];
+
+ return true;
+}
+
+uint32_t stream_getl(struct stream *s)
+{
+ uint32_t l;
STREAM_VERIFY_SANE(s);
- if (STREAM_READABLE(s) < sizeof(u_int32_t)) {
+ if (STREAM_READABLE(s) < sizeof(uint32_t)) {
STREAM_BOUND_WARN(s, "get long");
return 0;
}
}
/* Get next long word from the stream. */
-u_int32_t stream_get_ipv4(struct stream *s)
+uint32_t stream_get_ipv4(struct stream *s)
{
- u_int32_t l;
+ uint32_t l;
STREAM_VERIFY_SANE(s);
- if (STREAM_READABLE(s) < sizeof(u_int32_t)) {
+ if (STREAM_READABLE(s) < sizeof(uint32_t)) {
STREAM_BOUND_WARN(s, "get ipv4");
return 0;
}
- memcpy(&l, s->data + s->getp, sizeof(u_int32_t));
- s->getp += sizeof(u_int32_t);
+ memcpy(&l, s->data + s->getp, sizeof(uint32_t));
+ s->getp += sizeof(uint32_t);
return l;
}
}
/* Put character to the stream. */
-int stream_putc(struct stream *s, u_char c)
+int stream_putc(struct stream *s, uint8_t c)
{
STREAM_VERIFY_SANE(s);
- if (STREAM_WRITEABLE(s) < sizeof(u_char)) {
+ if (STREAM_WRITEABLE(s) < sizeof(uint8_t)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
s->data[s->endp++] = c;
- return sizeof(u_char);
+ return sizeof(uint8_t);
}
/* Put word to the stream. */
-int stream_putw(struct stream *s, u_int16_t w)
+int stream_putw(struct stream *s, uint16_t w)
{
STREAM_VERIFY_SANE(s);
- if (STREAM_WRITEABLE(s) < sizeof(u_int16_t)) {
+ if (STREAM_WRITEABLE(s) < sizeof(uint16_t)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[s->endp++] = (u_char)(w >> 8);
- s->data[s->endp++] = (u_char)w;
+ s->data[s->endp++] = (uint8_t)(w >> 8);
+ s->data[s->endp++] = (uint8_t)w;
return 2;
}
/* Put long word to the stream. */
-int stream_put3(struct stream *s, u_int32_t l)
+int stream_put3(struct stream *s, uint32_t l)
{
STREAM_VERIFY_SANE(s);
return 0;
}
- s->data[s->endp++] = (u_char)(l >> 16);
- s->data[s->endp++] = (u_char)(l >> 8);
- s->data[s->endp++] = (u_char)l;
+ s->data[s->endp++] = (uint8_t)(l >> 16);
+ s->data[s->endp++] = (uint8_t)(l >> 8);
+ s->data[s->endp++] = (uint8_t)l;
return 3;
}
/* Put long word to the stream. */
-int stream_putl(struct stream *s, u_int32_t l)
+int stream_putl(struct stream *s, uint32_t l)
{
STREAM_VERIFY_SANE(s);
- if (STREAM_WRITEABLE(s) < sizeof(u_int32_t)) {
+ if (STREAM_WRITEABLE(s) < sizeof(uint32_t)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[s->endp++] = (u_char)(l >> 24);
- s->data[s->endp++] = (u_char)(l >> 16);
- s->data[s->endp++] = (u_char)(l >> 8);
- s->data[s->endp++] = (u_char)l;
+ s->data[s->endp++] = (uint8_t)(l >> 24);
+ s->data[s->endp++] = (uint8_t)(l >> 16);
+ s->data[s->endp++] = (uint8_t)(l >> 8);
+ s->data[s->endp++] = (uint8_t)l;
return 4;
}
return 0;
}
- s->data[s->endp++] = (u_char)(q >> 56);
- s->data[s->endp++] = (u_char)(q >> 48);
- s->data[s->endp++] = (u_char)(q >> 40);
- s->data[s->endp++] = (u_char)(q >> 32);
- s->data[s->endp++] = (u_char)(q >> 24);
- s->data[s->endp++] = (u_char)(q >> 16);
- s->data[s->endp++] = (u_char)(q >> 8);
- s->data[s->endp++] = (u_char)q;
+ s->data[s->endp++] = (uint8_t)(q >> 56);
+ s->data[s->endp++] = (uint8_t)(q >> 48);
+ s->data[s->endp++] = (uint8_t)(q >> 40);
+ s->data[s->endp++] = (uint8_t)(q >> 32);
+ s->data[s->endp++] = (uint8_t)(q >> 24);
+ s->data[s->endp++] = (uint8_t)(q >> 16);
+ s->data[s->endp++] = (uint8_t)(q >> 8);
+ s->data[s->endp++] = (uint8_t)q;
return 8;
}
return stream_putq(s, u.o);
}
-int stream_putc_at(struct stream *s, size_t putp, u_char c)
+int stream_putc_at(struct stream *s, size_t putp, uint8_t c)
{
STREAM_VERIFY_SANE(s);
- if (!PUT_AT_VALID(s, putp + sizeof(u_char))) {
+ if (!PUT_AT_VALID(s, putp + sizeof(uint8_t))) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
return 1;
}
-int stream_putw_at(struct stream *s, size_t putp, u_int16_t w)
+int stream_putw_at(struct stream *s, size_t putp, uint16_t w)
{
STREAM_VERIFY_SANE(s);
- if (!PUT_AT_VALID(s, putp + sizeof(u_int16_t))) {
+ if (!PUT_AT_VALID(s, putp + sizeof(uint16_t))) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[putp] = (u_char)(w >> 8);
- s->data[putp + 1] = (u_char)w;
+ s->data[putp] = (uint8_t)(w >> 8);
+ s->data[putp + 1] = (uint8_t)w;
return 2;
}
-int stream_put3_at(struct stream *s, size_t putp, u_int32_t l)
+int stream_put3_at(struct stream *s, size_t putp, uint32_t l)
{
STREAM_VERIFY_SANE(s);
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[putp] = (u_char)(l >> 16);
- s->data[putp + 1] = (u_char)(l >> 8);
- s->data[putp + 2] = (u_char)l;
+ s->data[putp] = (uint8_t)(l >> 16);
+ s->data[putp + 1] = (uint8_t)(l >> 8);
+ s->data[putp + 2] = (uint8_t)l;
return 3;
}
-int stream_putl_at(struct stream *s, size_t putp, u_int32_t l)
+int stream_putl_at(struct stream *s, size_t putp, uint32_t l)
{
STREAM_VERIFY_SANE(s);
- if (!PUT_AT_VALID(s, putp + sizeof(u_int32_t))) {
+ if (!PUT_AT_VALID(s, putp + sizeof(uint32_t))) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[putp] = (u_char)(l >> 24);
- s->data[putp + 1] = (u_char)(l >> 16);
- s->data[putp + 2] = (u_char)(l >> 8);
- s->data[putp + 3] = (u_char)l;
+ s->data[putp] = (uint8_t)(l >> 24);
+ s->data[putp + 1] = (uint8_t)(l >> 16);
+ s->data[putp + 2] = (uint8_t)(l >> 8);
+ s->data[putp + 3] = (uint8_t)l;
return 4;
}
STREAM_BOUND_WARN(s, "put");
return 0;
}
- s->data[putp] = (u_char)(q >> 56);
- s->data[putp + 1] = (u_char)(q >> 48);
- s->data[putp + 2] = (u_char)(q >> 40);
- s->data[putp + 3] = (u_char)(q >> 32);
- s->data[putp + 4] = (u_char)(q >> 24);
- s->data[putp + 5] = (u_char)(q >> 16);
- s->data[putp + 6] = (u_char)(q >> 8);
- s->data[putp + 7] = (u_char)q;
+ s->data[putp] = (uint8_t)(q >> 56);
+ s->data[putp + 1] = (uint8_t)(q >> 48);
+ s->data[putp + 2] = (uint8_t)(q >> 40);
+ s->data[putp + 3] = (uint8_t)(q >> 32);
+ s->data[putp + 4] = (uint8_t)(q >> 24);
+ s->data[putp + 5] = (uint8_t)(q >> 16);
+ s->data[putp + 6] = (uint8_t)(q >> 8);
+ s->data[putp + 7] = (uint8_t)q;
return 8;
}
/* Put long word to the stream. */
-int stream_put_ipv4(struct stream *s, u_int32_t l)
+int stream_put_ipv4(struct stream *s, uint32_t l)
{
STREAM_VERIFY_SANE(s);
- if (STREAM_WRITEABLE(s) < sizeof(u_int32_t)) {
+ if (STREAM_WRITEABLE(s) < sizeof(uint32_t)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- memcpy(s->data + s->endp, &l, sizeof(u_int32_t));
- s->endp += sizeof(u_int32_t);
+ memcpy(s->data + s->endp, &l, sizeof(uint32_t));
+ s->endp += sizeof(uint32_t);
- return sizeof(u_int32_t);
+ return sizeof(uint32_t);
}
/* Put long word to the stream. */
{
STREAM_VERIFY_SANE(s);
- if (STREAM_WRITEABLE(s) < sizeof(u_int32_t)) {
+ if (STREAM_WRITEABLE(s) < sizeof(uint32_t)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
- memcpy(s->data + s->endp, addr, sizeof(u_int32_t));
- s->endp += sizeof(u_int32_t);
+ memcpy(s->data + s->endp, addr, sizeof(uint32_t));
+ s->endp += sizeof(uint32_t);
- return sizeof(u_int32_t);
+ return sizeof(uint32_t);
}
/* Put in_addr at location in the stream. */
/* Put prefix by nlri type format. */
int stream_put_prefix_addpath(struct stream *s, struct prefix *p,
- int addpath_encode, u_int32_t addpath_tx_id)
+ int addpath_encode, uint32_t addpath_tx_id)
{
size_t psize;
size_t psize_with_addpath;
else
psize_with_addpath = psize;
- if (STREAM_WRITEABLE(s) < (psize_with_addpath + sizeof(u_char))) {
+ if (STREAM_WRITEABLE(s) < (psize_with_addpath + sizeof(uint8_t))) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
if (addpath_encode) {
- s->data[s->endp++] = (u_char)(addpath_tx_id >> 24);
- s->data[s->endp++] = (u_char)(addpath_tx_id >> 16);
- s->data[s->endp++] = (u_char)(addpath_tx_id >> 8);
- s->data[s->endp++] = (u_char)addpath_tx_id;
+ s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 24);
+ s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 16);
+ s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 8);
+ s->data[s->endp++] = (uint8_t)addpath_tx_id;
}
s->data[s->endp++] = p->prefixlen;
mpls_label_t *label)
{
size_t psize;
- u_char *label_pnt = (u_char *)label;
+ uint8_t *label_pnt = (uint8_t *)label;
STREAM_VERIFY_SANE(s);
* Use stream_get_pnt_to if you must, but decoding streams properly
* is preferred
*/
-u_char *stream_pnt(struct stream *s)
+uint8_t *stream_pnt(struct stream *s)
{
STREAM_VERIFY_SANE(s);
return s->data + s->getp;
struct stream_fifo *new;
new = XCALLOC(MTYPE_STREAM_FIFO, sizeof(struct stream_fifo));
+ pthread_mutex_init(&new->mtx, NULL);
return new;
}
/* Add new stream to fifo. */
void stream_fifo_push(struct stream_fifo *fifo, struct stream *s)
{
+#if defined DEV_BUILD
+ size_t max, curmax;
+#endif
+
if (fifo->tail)
fifo->tail->next = s;
else
fifo->head = s;
fifo->tail = s;
+ fifo->tail->next = NULL;
+#if !defined DEV_BUILD
+ atomic_fetch_add_explicit(&fifo->count, 1, memory_order_release);
+#else
+ max = atomic_fetch_add_explicit(&fifo->count, 1, memory_order_release);
+ curmax = atomic_load_explicit(&fifo->max_count, memory_order_relaxed);
+ if (max > curmax)
+ atomic_store_explicit(&fifo->max_count, max,
+ memory_order_relaxed);
+#endif
+}
- fifo->count++;
+void stream_fifo_push_safe(struct stream_fifo *fifo, struct stream *s)
+{
+ pthread_mutex_lock(&fifo->mtx);
+ {
+ stream_fifo_push(fifo, s);
+ }
+ pthread_mutex_unlock(&fifo->mtx);
}
/* Delete first stream from fifo. */
if (fifo->head == NULL)
fifo->tail = NULL;
- fifo->count--;
+ atomic_fetch_sub_explicit(&fifo->count, 1,
+ memory_order_release);
+
+ /* ensure stream is scrubbed of references to this fifo */
+ s->next = NULL;
}
return s;
}
-/* Return first fifo entry. */
+struct stream *stream_fifo_pop_safe(struct stream_fifo *fifo)
+{
+ struct stream *ret;
+
+ pthread_mutex_lock(&fifo->mtx);
+ {
+ ret = stream_fifo_pop(fifo);
+ }
+ pthread_mutex_unlock(&fifo->mtx);
+
+ return ret;
+}
+
struct stream *stream_fifo_head(struct stream_fifo *fifo)
{
return fifo->head;
}
+struct stream *stream_fifo_head_safe(struct stream_fifo *fifo)
+{
+ struct stream *ret;
+
+ pthread_mutex_lock(&fifo->mtx);
+ {
+ ret = stream_fifo_head(fifo);
+ }
+ pthread_mutex_unlock(&fifo->mtx);
+
+ return ret;
+}
+
void stream_fifo_clean(struct stream_fifo *fifo)
{
struct stream *s;
stream_free(s);
}
fifo->head = fifo->tail = NULL;
- fifo->count = 0;
+ atomic_store_explicit(&fifo->count, 0, memory_order_release);
+}
+
+void stream_fifo_clean_safe(struct stream_fifo *fifo)
+{
+ pthread_mutex_lock(&fifo->mtx);
+ {
+ stream_fifo_clean(fifo);
+ }
+ pthread_mutex_unlock(&fifo->mtx);
+}
+
+size_t stream_fifo_count_safe(struct stream_fifo *fifo)
+{
+ return atomic_load_explicit(&fifo->count, memory_order_acquire);
}
void stream_fifo_free(struct stream_fifo *fifo)
{
stream_fifo_clean(fifo);
+ pthread_mutex_destroy(&fifo->mtx);
XFREE(MTYPE_STREAM_FIFO, fifo);
}
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