- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#include <rte_atomic.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_errno.h>
#include <rte_string_fns.h>
#include <rte_atomic.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_errno.h>
#include <rte_string_fns.h>
RTE_BUILD_BUG_ON((offsetof(struct rte_ring, prod) &
CACHE_LINE_MASK) != 0);
#ifdef RTE_LIBRTE_RING_DEBUG
RTE_BUILD_BUG_ON((offsetof(struct rte_ring, prod) &
CACHE_LINE_MASK) != 0);
#ifdef RTE_LIBRTE_RING_DEBUG
- if (ring_list == NULL)
- if ((ring_list = RTE_TAILQ_RESERVE("RTE_RING", rte_ring_list)) == NULL){
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
+ if ((ring_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_RING, rte_ring_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
- RTE_LOG(ERR, RING, "Requested size is not a power of 2\n");
+ RTE_LOG(ERR, RING, "Requested size is invalid, must be power of 2, and "
+ "do not exceed the size limit %u\n", RTE_RING_SZ_MASK);
return NULL;
}
rte_snprintf(mz_name, sizeof(mz_name), "RG_%s", name);
ring_size = count * sizeof(void *) + sizeof(struct rte_ring);
return NULL;
}
rte_snprintf(mz_name, sizeof(mz_name), "RG_%s", name);
ring_size = count * sizeof(void *) + sizeof(struct rte_ring);
/* reserve a memory zone for this ring. If we can't get rte_config or
* we are secondary process, the memzone_reserve function will set
* rte_errno for us appropriately - hence no check in this this function */
mz = rte_memzone_reserve(mz_name, ring_size, socket_id, mz_flags);
/* reserve a memory zone for this ring. If we can't get rte_config or
* we are secondary process, the memzone_reserve function will set
* rte_errno for us appropriately - hence no check in this this function */
mz = rte_memzone_reserve(mz_name, ring_size, socket_id, mz_flags);
+ /* init the ring structure */
+ memset(r, 0, sizeof(*r));
+ rte_snprintf(r->name, sizeof(r->name), "%s", name);
+ r->flags = flags;
+ r->prod.watermark = count;
+ r->prod.sp_enqueue = !!(flags & RING_F_SP_ENQ);
+ r->cons.sc_dequeue = !!(flags & RING_F_SC_DEQ);
+ r->prod.size = r->cons.size = count;
+ r->prod.mask = r->cons.mask = count-1;
+ r->prod.head = r->cons.head = 0;
+ r->prod.tail = r->cons.tail = 0;
- /* init the ring structure */
- memset(r, 0, sizeof(*r));
- rte_snprintf(r->name, sizeof(r->name), "%s", name);
- r->flags = flags;
- r->prod.bulk_default = r->cons.bulk_default = 1;
- r->prod.watermark = count;
- r->prod.sp_enqueue = !!(flags & RING_F_SP_ENQ);
- r->cons.sc_dequeue = !!(flags & RING_F_SC_DEQ);
- r->prod.size = r->cons.size = count;
- r->prod.mask = r->cons.mask = count-1;
- r->prod.head = r->cons.head = 0;
- r->prod.tail = r->cons.tail = 0;
-
- TAILQ_INSERT_TAIL(ring_list, r, next);
+ TAILQ_INSERT_TAIL(ring_list, r, next);
+ } else {
+ r = NULL;
+ RTE_LOG(ERR, RING, "Cannot reserve memory\n");
+ }
+ rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+
printf(" watermark=0\n");
else
printf(" watermark=%"PRIu32"\n", r->prod.watermark);
printf(" watermark=0\n");
else
printf(" watermark=%"PRIu32"\n", r->prod.watermark);
- if (ring_list == NULL)
- if ((ring_list = RTE_TAILQ_RESERVE("RTE_RING", rte_ring_list)) == NULL){
- rte_errno = E_RTE_NO_TAILQ;
- return;
- }
+ if ((ring_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_RING, rte_ring_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return;
+ }
+
+ rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
- /* check that we have an initialised tail queue */
- if (ring_list == NULL)
- if ((ring_list = RTE_TAILQ_RESERVE("RTE_RING", rte_ring_list)) == NULL){
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
+ /* check that we have an initialized tail queue */
+ if ((ring_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_RING, rte_ring_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
TAILQ_FOREACH(r, ring_list, next) {
if (strncmp(name, r->name, RTE_RING_NAMESIZE) == 0)
break;
}
TAILQ_FOREACH(r, ring_list, next) {
if (strncmp(name, r->name, RTE_RING_NAMESIZE) == 0)
break;
}