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gnrc_pktbuf: remove gnrc_pktbuf_duplicate_upto

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The removal of this function was already announced for the 2019.04
release. So it is safe to remove it.
This commit is contained in:
Martine S. Lenders 2019-07-03 15:08:23 +02:00
parent e8650f5b9a
commit b83430aa62
3 changed files with 0 additions and 156 deletions
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55
sys/include/net/gnrc/pktbuf.h
View File

@ -229,61 +229,6 @@ gnrc_pktsnip_t *gnrc_pktbuf_replace_snip(gnrc_pktsnip_t *pkt, gnrc_pktsnip_t *ol
*/ */
gnrc_pktsnip_t *gnrc_pktbuf_reverse_snips(gnrc_pktsnip_t *pkt); gnrc_pktsnip_t *gnrc_pktbuf_reverse_snips(gnrc_pktsnip_t *pkt);
/**
* @brief Duplicates pktsnip chain upto (including) a snip with the given type
* as a continuous snip.
*
* Example:
* Input:
* buffer
* +---------------------------+ +------+
* | size = 8 | data +-------->| |
* | type = NETTYPE_IPV6_EXT |------------+ +------+
* +---------------------------+ . .
* | next . .
* v . .
* +---------------------------+ +------+
* | size = 40 | data +----------->| |
* | type = NETTYPE_IPV6 |---------+ +------+
* +---------------------------+ . .
* | next . .
* v
* +---------------------------+ +------+
* | size = 14 | data +-------------->| |
* | type = NETTYPE_NETIF |------+ +------+
* +---------------------------+ . .
*
*
* Output:
* buffer
* +---------------------------+ +------+
* | size = 48 | data +-------->| |
* | type = NETTYPE_IPV6 |------------+ | |
* +---------------------------+ | |
* | +------+
* | . .
* | next . .
* v
* +---------------------------+ +------+
* | size = 14 | data +-------------->| |
* | type = NETTYPE_NETIF |------+ +------+
* +---------------------------+ . .
*
* The original snip is keeped as is except `users` decremented.
*
* @deprecated This function breaks the abstraction of `gnrc_pktbuf` and its
* only user within the RIOT code base `gnrc_ipv6_ext` was reworked
* so it isn't needed anymore.
* It will be removed after the 2019.04 release.
*
* @param[in,out] pkt The snip to duplicate.
* @param[in] type The type of snip to stop duplication.
*
* @return The duplicated snip, if succeeded.
* @return NULL, if no space is left in the packet buffer.
*/
gnrc_pktsnip_t *gnrc_pktbuf_duplicate_upto(gnrc_pktsnip_t *pkt, gnrc_nettype_t type);
/** /**
* @brief Merge pktsnip chain to single pktsnip. * @brief Merge pktsnip chain to single pktsnip.
* *

50
sys/net/gnrc/pktbuf_malloc/gnrc_pktbuf_malloc.c
View File

@ -295,54 +295,4 @@ static gnrc_pktsnip_t *_create_snip(gnrc_pktsnip_t *next, const void *data, size
return pkt; return pkt;
} }
gnrc_pktsnip_t *gnrc_pktbuf_duplicate_upto(gnrc_pktsnip_t *pkt, gnrc_nettype_t type)
{
mutex_lock(&_mutex);
bool is_shared = pkt->users > 1;
size_t size = gnrc_pkt_len_upto(pkt, type);
DEBUG("ipv6_ext: duplicating %d octets\n", (int) size);
gnrc_pktsnip_t *tmp;
gnrc_pktsnip_t *target = gnrc_pktsnip_search_type(pkt, type);
gnrc_pktsnip_t *next = (target == NULL) ? NULL : target->next;
gnrc_pktsnip_t *new = _create_snip(next, NULL, size, type);
if (new == NULL) {
mutex_unlock(&_mutex);
return NULL;
}
/* copy payloads */
for (tmp = pkt; tmp != NULL; tmp = tmp->next) {
uint8_t *dest = ((uint8_t *)new->data) + (size - tmp->size);
memcpy(dest, tmp->data, tmp->size);
size -= tmp->size;
if (tmp->type == type) {
break;
}
}
/* decrements reference counters */
if (target != NULL) {
target->next = NULL;
}
_release_error_locked(pkt, GNRC_NETERR_SUCCESS);
if (is_shared && (target != NULL)) {
target->next = next;
}
mutex_unlock(&_mutex);
return new;
}
/** @} */ /** @} */

51
sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
View File

@ -485,55 +485,4 @@ static void _pktbuf_free(void *data, size_t size)
} }
} }
gnrc_pktsnip_t *gnrc_pktbuf_duplicate_upto(gnrc_pktsnip_t *pkt, gnrc_nettype_t type)
{
mutex_lock(&_mutex);
bool is_shared = pkt->users > 1;
size_t size = gnrc_pkt_len_upto(pkt, type);
DEBUG("ipv6_ext: duplicating %d octets\n", (int) size);
gnrc_pktsnip_t *tmp;
gnrc_pktsnip_t *target = gnrc_pktsnip_search_type(pkt, type);
gnrc_pktsnip_t *next = (target == NULL) ? NULL : target->next;
gnrc_pktsnip_t *new = _create_snip(next, NULL, size, type);
if (new == NULL) {
mutex_unlock(&_mutex);
return NULL;
}
/* copy payloads */
for (tmp = pkt; tmp != NULL; tmp = tmp->next) {
uint8_t *dest = ((uint8_t *)new->data) + (size - tmp->size);
memcpy(dest, tmp->data, tmp->size);
size -= tmp->size;
if (tmp->type == type) {
break;
}
}
/* decrements reference counters */
if (target != NULL) {
target->next = NULL;
}
_release_error_locked(pkt, GNRC_NETERR_SUCCESS);
if (is_shared && (target != NULL)) {
target->next = next;
}
mutex_unlock(&_mutex);
return new;
}
/** @} */ /** @} */