--- /dev/null
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <sys/epoll.h>
+
+#include <vppinfra/cache.h>
+#include <daq_dlt.h>
+#include <daq_module_api.h>
+
+#include "daq_vpp.h"
+
+#define DAQ_VPP_VERSION 1
+
+#if __x86_64__
+#define VPP_DAQ_PAUSE() __builtin_ia32_pause ()
+#elif defined(__aarch64__) || defined(__arm__)
+#define VPP_DAQ_PAUSE() __asm__("yield")
+#else
+#define VPP_DAQ_PAUSE()
+#endif
+
+static DAQ_VariableDesc_t vpp_variable_descriptions[] = {
+ { "debug", "Enable debugging output to stdout",
+ DAQ_VAR_DESC_FORBIDS_ARGUMENT },
+};
+
+static DAQ_BaseAPI_t daq_base_api;
+
+#define SET_ERROR(modinst, ...) daq_base_api.set_errbuf (modinst, __VA_ARGS__)
+
+typedef struct _vpp_msg_pool
+{
+ DAQ_MsgPoolInfo_t info;
+} VPPMsgPool;
+
+typedef struct _vpp_desc_data
+{
+ uint32_t index;
+ uint32_t qpair_index;
+ DAQ_Msg_t msg;
+ DAQ_PktHdr_t pkthdr;
+} VPPDescData;
+
+typedef struct _vpp_bpool
+{
+ int fd;
+ uint32_t size;
+ void *base;
+} VPPBufferPool;
+
+typedef struct _vpp_qpair
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ uint32_t queue_size;
+ daq_vpp_desc_t *descs;
+ uint32_t *enq_ring;
+ uint32_t *deq_ring;
+ volatile uint32_t *enq_head;
+ volatile uint32_t *deq_head;
+ uint32_t next_desc;
+ int enq_fd;
+ int deq_fd;
+ VPPDescData *desc_data;
+ volatile int lock;
+} VPPQueuePair;
+
+typedef enum
+{
+ DAQ_VPP_INPUT_MODE_INTERRUPT = 0,
+ DAQ_VPP_INPUT_MODE_POLLING,
+} daq_vpp_input_mode_t;
+
+typedef struct _vpp_context
+{
+ /* config */
+ bool debug;
+
+ /* state */
+ uint32_t intf_count;
+ DAQ_ModuleInstance_h modinst;
+ VPPMsgPool pool;
+
+ /* socket */
+ int sock_fd;
+
+ /* shared memory */
+ uint32_t shm_size;
+ void *shm_base;
+ int shm_fd;
+
+ /* queue pairs */
+ uint8_t num_qpairs;
+ VPPQueuePair *qpairs;
+ uint32_t next_qpair;
+
+ /* epoll */
+ struct epoll_event *epoll_events;
+ int epoll_fd;
+
+ /* buffer pools */
+ uint8_t num_bpools;
+ VPPBufferPool *bpools;
+
+ daq_vpp_input_mode_t input_mode;
+ const char *socket_name;
+} VPP_Context_t;
+
+static VPP_Context_t *global_vpp_ctx = 0;
+
+static int
+vpp_daq_qpair_lock (VPPQueuePair *p)
+{
+ int free = 0;
+ while (!__atomic_compare_exchange_n (&p->lock, &free, 1, 0, __ATOMIC_ACQUIRE,
+ __ATOMIC_RELAXED))
+ {
+ while (__atomic_load_n (&p->lock, __ATOMIC_RELAXED))
+ VPP_DAQ_PAUSE ();
+ free = 0;
+ }
+ return 0;
+}
+
+static void
+vpp_daq_qpair_unlock (VPPQueuePair *p)
+{
+ __atomic_store_n (&p->lock, 0, __ATOMIC_RELEASE);
+}
+
+static int
+vpp_daq_module_load (const DAQ_BaseAPI_t *base_api)
+{
+ if (base_api->api_version != DAQ_BASE_API_VERSION ||
+ base_api->api_size != sizeof (DAQ_BaseAPI_t))
+ return DAQ_ERROR;
+
+ daq_base_api = *base_api;
+
+ return DAQ_SUCCESS;
+}
+
+static int
+vpp_daq_module_unload (void)
+{
+ memset (&daq_base_api, 0, sizeof (daq_base_api));
+ return DAQ_SUCCESS;
+}
+
+static int
+vpp_daq_get_variable_descs (const DAQ_VariableDesc_t **var_desc_table)
+{
+ *var_desc_table = vpp_variable_descriptions;
+
+ return sizeof (vpp_variable_descriptions) / sizeof (DAQ_VariableDesc_t);
+}
+
+static int
+vpp_daq_recvmsg (int fd, daq_vpp_msg_t *msg, int n_fds, int *fds)
+{
+ const int ctl_sz =
+ CMSG_SPACE (sizeof (int) * n_fds) + CMSG_SPACE (sizeof (struct ucred));
+ char ctl[ctl_sz];
+ struct msghdr mh = {};
+ struct iovec iov[1];
+ struct cmsghdr *cmsg;
+
+ iov[0].iov_base = (void *) msg;
+ iov[0].iov_len = sizeof (daq_vpp_msg_t);
+ mh.msg_iov = iov;
+ mh.msg_iovlen = 1;
+ mh.msg_control = ctl;
+ mh.msg_controllen = ctl_sz;
+
+ memset (ctl, 0, ctl_sz);
+
+ int rv;
+ if ((rv = recvmsg (fd, &mh, 0)) != sizeof (daq_vpp_msg_t))
+ return DAQ_ERROR_NODEV;
+
+ cmsg = CMSG_FIRSTHDR (&mh);
+ while (cmsg)
+ {
+ if (cmsg->cmsg_level == SOL_SOCKET)
+ {
+ if (cmsg->cmsg_type == SCM_CREDENTIALS)
+ {
+ /* Do nothing */;
+ }
+ else if (cmsg->cmsg_type == SCM_RIGHTS)
+ {
+ memcpy (fds, CMSG_DATA (cmsg), n_fds * sizeof (int));
+ }
+ }
+ cmsg = CMSG_NXTHDR (&mh, cmsg);
+ }
+
+ return DAQ_SUCCESS;
+}
+
+static void
+vpp_daq_destroy (void *handle)
+{
+ VPP_Context_t *vc = (VPP_Context_t *) handle;
+
+ if (vc->shm_base != MAP_FAILED)
+ munmap (vc->shm_base, vc->shm_size);
+
+ if (vc->shm_fd != -1)
+ close (vc->shm_fd);
+
+ if (vc->bpools)
+ {
+ for (int i = 0; i < vc->num_bpools; i++)
+ {
+ VPPBufferPool *bp = vc->bpools + i;
+ if (bp->fd != -1)
+ close (bp->fd);
+ if (bp->base && bp->base != MAP_FAILED)
+ munmap (bp->base, bp->size);
+ }
+ free (vc->bpools);
+ }
+
+ if (vc->qpairs)
+ {
+ for (int i = 0; i < vc->num_qpairs; i++)
+ {
+ VPPQueuePair *qp = vc->qpairs + i;
+ if (qp->enq_fd != -1)
+ close (qp->enq_fd);
+ if (qp->deq_fd != -1)
+ close (qp->deq_fd);
+ if (qp->desc_data)
+ free (qp->desc_data);
+ }
+ free (vc->qpairs);
+ }
+
+ free (vc->epoll_events);
+ close (vc->sock_fd);
+ if (vc->epoll_fd != -1)
+ close (vc->epoll_fd);
+ free (vc);
+}
+
+#define ERR(rv, ...) \
+ { \
+ SET_ERROR (modinst, __VA_ARGS__); \
+ rval = rv; \
+ goto err; \
+ }
+
+static int
+vpp_daq_instantiate (const DAQ_ModuleConfig_h modcfg,
+ DAQ_ModuleInstance_h modinst, void **ctxt_ptr)
+{
+ VPP_Context_t *vc = 0;
+ int rval = DAQ_ERROR;
+ daq_vpp_msg_t msg;
+ struct sockaddr_un sun = { .sun_family = AF_UNIX };
+ int i, fd = -1, shm_fd = -1;
+ const char *input;
+ uint8_t *base;
+
+ if (global_vpp_ctx)
+ {
+ *ctxt_ptr = global_vpp_ctx;
+ return DAQ_SUCCESS;
+ }
+
+ vc = calloc (1, sizeof (VPP_Context_t));
+
+ if (!vc)
+ ERR (DAQ_ERROR_NOMEM,
+ "%s: Couldn't allocate memory for the new VPP context!", __func__);
+
+ const char *varKey, *varValue;
+ daq_base_api.config_first_variable (modcfg, &varKey, &varValue);
+ while (varKey)
+ {
+ if (!strcmp (varKey, "debug"))
+ vc->debug = true;
+ else if (!strcmp (varKey, "input_mode"))
+ {
+ if (!strcmp (varValue, "interrupt"))
+ vc->input_mode = DAQ_VPP_INPUT_MODE_INTERRUPT;
+ else if (!strcmp (varValue, "polling"))
+ vc->input_mode = DAQ_VPP_INPUT_MODE_POLLING;
+ }
+ else if (!strcmp (varKey, "socket_name"))
+ {
+ vc->socket_name = varValue;
+ }
+ daq_base_api.config_next_variable (modcfg, &varKey, &varValue);
+ }
+
+ input = daq_base_api.config_get_input (modcfg);
+
+ if (!vc->socket_name)
+ /* try to use default socket path */
+ vc->socket_name = DAQ_VPP_DEFAULT_SOCKET_PATH;
+
+ if ((fd = socket (AF_UNIX, SOCK_SEQPACKET, 0)) < 0)
+ ERR (DAQ_ERROR_NODEV, "%s: Couldn't create socket!", __func__);
+
+ strncpy (sun.sun_path, vc->socket_name, sizeof (sun.sun_path) - 1);
+
+ if (connect (fd, (struct sockaddr *) &sun, sizeof (struct sockaddr_un)) != 0)
+ ERR (DAQ_ERROR_NODEV, "%s: Couldn't connect to socket! '%s'", __func__,
+ vc->socket_name);
+
+ /* craft and send connect message */
+ msg.type = DAQ_VPP_MSG_TYPE_HELLO;
+ snprintf ((char *) &msg.hello.inst_name, DAQ_VPP_INST_NAME_LEN - 1, "%s",
+ input);
+
+ if (send (fd, &msg, sizeof (msg), 0) != sizeof (msg))
+ ERR (DAQ_ERROR_NODEV, "%s: Couldn't send connect message!", __func__);
+
+ /* receive config message */
+ rval = vpp_daq_recvmsg (fd, &msg, 1, &shm_fd);
+
+ if (rval != DAQ_SUCCESS || msg.type != DAQ_VPP_MSG_TYPE_CONFIG ||
+ shm_fd == -1)
+ ERR (DAQ_ERROR_NODEV, "%s: Couldn't receive config message!", __func__);
+
+ vc->modinst = modinst;
+ vc->sock_fd = fd;
+ vc->epoll_fd = -1;
+ vc->intf_count = 1;
+ vc->num_bpools = msg.config.num_bpools;
+ vc->num_qpairs = msg.config.num_qpairs;
+ vc->shm_size = msg.config.shm_size;
+ vc->shm_fd = shm_fd;
+
+ vc->bpools = calloc (vc->num_bpools, sizeof (VPPBufferPool));
+ vc->qpairs = calloc (vc->num_qpairs, sizeof (VPPQueuePair));
+ vc->epoll_events = calloc (vc->num_qpairs, sizeof (struct epoll_event));
+
+ if (vc->bpools == 0 || vc->qpairs == 0)
+ ERR (DAQ_ERROR_NOMEM,
+ "%s: Couldn't allocate memory for the new VPP context!", __func__);
+
+ for (i = 0; i < vc->num_bpools; i++)
+ vc->bpools[i].fd = -1;
+
+ base =
+ mmap (0, vc->shm_size, PROT_READ | PROT_WRITE, MAP_SHARED, vc->shm_fd, 0);
+
+ if (base == MAP_FAILED)
+ ERR (DAQ_ERROR_NOMEM,
+ "%s: Couldn't map shared memory for the new VPP context!", __func__);
+
+ vc->shm_base = base;
+
+ if (vc->debug)
+ {
+ printf ("[%s]\n", input);
+ printf (" Shared memory size: %u\n", vc->shm_size);
+ printf (" Number of buffer pools: %u\n", vc->num_bpools);
+ printf (" Number of queue pairs: %u\n", vc->num_qpairs);
+ }
+
+ /* receive buffer pools */
+ for (int i = 0; i < vc->num_bpools; i++)
+ {
+ VPPBufferPool *bp = vc->bpools + i;
+ rval = vpp_daq_recvmsg (fd, &msg, 1, &bp->fd);
+ if (rval != DAQ_SUCCESS || msg.type != DAQ_VPP_MSG_TYPE_BPOOL ||
+ bp->fd == -1)
+ ERR (DAQ_ERROR_NODEV,
+ "%s: Failed to receive buffer pool message for the new "
+ "VPP context!",
+ __func__);
+ bp->size = msg.bpool.size;
+ bp->base = mmap (0, bp->size, PROT_READ, MAP_SHARED, bp->fd, 0);
+
+ if (bp->base == MAP_FAILED)
+ ERR (DAQ_ERROR_NOMEM,
+ "%s: Couldn't map shared memory for the new VPP context!",
+ __func__);
+ if (vc->debug)
+ printf (" Buffer pool %u size: %u\n", i, bp->size);
+ }
+
+ if ((vc->epoll_fd = epoll_create (1)) == -1)
+ ERR (DAQ_ERROR_NODEV,
+ "%s: Couldn't create epoll fd for the new VPP context!", __func__);
+
+ /* receive queue pairs */
+ for (int i = 0; i < vc->num_qpairs; i++)
+ {
+ struct epoll_event ev = { .events = EPOLLIN };
+ int fds[2] = { -1, -1 };
+ uint32_t qsz;
+ VPPQueuePair *qp = vc->qpairs + i;
+ rval = vpp_daq_recvmsg (fd, &msg, 2, fds);
+ if (rval != DAQ_SUCCESS || msg.type != DAQ_VPP_MSG_TYPE_QPAIR ||
+ fds[0] == -1 || fds[1] == -1)
+ ERR (DAQ_ERROR_NODEV,
+ "%s: Failed to receive queu pair message for the new "
+ "VPP context!",
+ __func__);
+ qp->queue_size = 1 << msg.qpair.log2_queue_size;
+ qp->descs = (daq_vpp_desc_t *) (base + msg.qpair.desc_table_offset);
+ qp->enq_ring = (uint32_t *) (base + msg.qpair.enq_ring_offset);
+ qp->deq_ring = (uint32_t *) (base + msg.qpair.deq_ring_offset);
+ qp->enq_head = (uint32_t *) (base + msg.qpair.enq_head_offset);
+ qp->deq_head = (uint32_t *) (base + msg.qpair.deq_head_offset);
+ qp->enq_fd = fds[0];
+ qp->deq_fd = fds[1];
+ ev.data.u32 = i;
+
+ if (epoll_ctl (vc->epoll_fd, EPOLL_CTL_ADD, qp->enq_fd, &ev) == -1)
+ ERR (DAQ_ERROR_NODEV,
+ "%s: Failed to dequeue fd to epoll instance for the new "
+ "VPP context!",
+ __func__);
+
+ qsz = qp->queue_size;
+
+ qp->desc_data = calloc (qsz, sizeof (VPPDescData));
+ if (!qp->desc_data)
+ ERR (DAQ_ERROR_NOMEM,
+ "%s: Couldn't allocate memory for the new VPP context!",
+ __func__);
+
+ for (int j = 0; j < qsz; j++)
+ {
+ VPPDescData *dd = qp->desc_data + j;
+ DAQ_PktHdr_t *pkthdr = &dd->pkthdr;
+ DAQ_Msg_t *msg = &dd->msg;
+
+ dd->index = j;
+ dd->qpair_index = i;
+
+ pkthdr->ingress_group = DAQ_PKTHDR_UNKNOWN;
+ pkthdr->egress_group = DAQ_PKTHDR_UNKNOWN;
+
+ msg->type = DAQ_MSG_TYPE_PACKET;
+ msg->hdr_len = sizeof (DAQ_PktHdr_t);
+ msg->hdr = pkthdr;
+ msg->owner = vc->modinst;
+ msg->priv = dd;
+ }
+
+ if (vc->debug)
+ {
+ printf (" Queue pair %u:\n", i);
+ printf (" Size: %u\n", qp->queue_size);
+ printf (" Enqueue fd: %u\n", qp->enq_fd);
+ printf (" Dequeue fd: %u\n", qp->deq_fd);
+ }
+ }
+
+ *ctxt_ptr = global_vpp_ctx = vc;
+ return DAQ_SUCCESS;
+err:
+ if (vc)
+ vpp_daq_destroy (vc);
+ else if (fd != -1)
+ close (fd);
+ return rval;
+}
+
+static int
+vpp_daq_start (void *handle)
+{
+ return DAQ_SUCCESS;
+}
+
+static int
+vpp_daq_get_stats (void *handle, DAQ_Stats_t *stats)
+{
+ memset (stats, 0, sizeof (DAQ_Stats_t));
+ return DAQ_SUCCESS;
+}
+
+static void
+vpp_daq_reset_stats (void *handle)
+{
+}
+
+static uint32_t
+vpp_daq_get_capabilities (void *handle)
+{
+ uint32_t capabilities = DAQ_CAPA_BLOCK | DAQ_CAPA_UNPRIV_START;
+ return capabilities;
+}
+
+static int
+vpp_daq_get_datalink_type (void *handle)
+{
+ return DLT_IPV4;
+}
+
+static inline uint32_t
+vpp_daq_msg_receive_one (VPP_Context_t *vc, VPPQueuePair *qp,
+ const DAQ_Msg_t *msgs[], unsigned max_recv)
+{
+ uint32_t n_recv, n_left;
+ uint32_t head, next, mask = qp->queue_size - 1;
+
+ if (max_recv == 0)
+ return 0;
+
+ vpp_daq_qpair_lock (qp);
+ next = qp->next_desc;
+ head = __atomic_load_n (qp->enq_head, __ATOMIC_ACQUIRE);
+ n_recv = n_left = head - next;
+
+ if (n_left > max_recv)
+ {
+ n_left = n_recv = max_recv;
+ }
+
+ while (n_left--)
+ {
+ uint32_t desc_index = qp->enq_ring[next & mask];
+ daq_vpp_desc_t *d = qp->descs + desc_index;
+ VPPDescData *dd = qp->desc_data + desc_index;
+ dd->pkthdr.pktlen = d->length;
+ dd->pkthdr.address_space_id = d->address_space_id;
+ dd->msg.data = vc->bpools[d->buffer_pool].base + d->offset;
+ next = next + 1;
+
+ msgs[0] = &dd->msg;
+ msgs++;
+ }
+
+ qp->next_desc = next;
+ vpp_daq_qpair_unlock (qp);
+
+ return n_recv;
+}
+
+static unsigned
+vpp_daq_msg_receive (void *handle, const unsigned max_recv,
+ const DAQ_Msg_t *msgs[], DAQ_RecvStatus *rstat)
+{
+ VPP_Context_t *vc = (VPP_Context_t *) handle;
+ uint32_t n_qpairs_left = vc->num_qpairs;
+ uint32_t n, n_events, n_recv = 0;
+
+ /* first, we visit all qpairs. If we find any work there then we can give
+ * it back immediatelly. To avoid bias towards qpair 0 we remeber what
+ * next qpair */
+ while (n_qpairs_left)
+ {
+ VPPQueuePair *qp = vc->qpairs + vc->next_qpair;
+
+ if ((n = vpp_daq_msg_receive_one (vc, qp, msgs, max_recv - n_recv)))
+ {
+ msgs += n;
+ n_recv += n;
+ }
+
+ /* next */
+ vc->next_qpair++;
+ if (vc->next_qpair == vc->num_qpairs)
+ vc->next_qpair = 0;
+ n_qpairs_left--;
+ }
+
+ if (vc->input_mode == DAQ_VPP_INPUT_MODE_POLLING)
+ {
+ *rstat = DAQ_RSTAT_OK;
+ return n_recv;
+ }
+
+ if (n_recv)
+ {
+ *rstat = DAQ_RSTAT_OK;
+ return n_recv;
+ }
+
+ n_events = epoll_wait (vc->epoll_fd, vc->epoll_events, vc->num_qpairs, 1000);
+
+ if (n_events < 1)
+ {
+ *rstat = n_events == -1 ? DAQ_RSTAT_ERROR : DAQ_RSTAT_TIMEOUT;
+ return 0;
+ }
+
+ for (int i = 0; i < n_events; i++)
+ {
+ uint64_t ctr;
+ VPPQueuePair *qp = vc->qpairs + vc->epoll_events[i].data.u32;
+
+ if ((n = vpp_daq_msg_receive_one (vc, qp, msgs, max_recv - n_recv)))
+ {
+ msgs += n;
+ n_recv += n;
+ }
+
+ (void) read (qp->enq_fd, &ctr, sizeof (ctr));
+ }
+
+ *rstat = DAQ_RSTAT_OK;
+ return n_recv;
+}
+
+static int
+vpp_daq_msg_finalize (void *handle, const DAQ_Msg_t *msg, DAQ_Verdict verdict)
+{
+ VPP_Context_t *vc = (VPP_Context_t *) handle;
+ VPPDescData *dd = msg->priv;
+ VPPQueuePair *qp = vc->qpairs + dd->qpair_index;
+ daq_vpp_desc_t *d;
+ uint32_t mask, head;
+ uint64_t counter_increment = 1;
+ int rv, retv = DAQ_SUCCESS;
+
+ vpp_daq_qpair_lock (qp);
+ mask = qp->queue_size - 1;
+ head = *qp->deq_head;
+ d = qp->descs + dd->index;
+ if (verdict == DAQ_VERDICT_PASS)
+ d->action = DAQ_VPP_ACTION_FORWARD;
+ else
+ d->action = DAQ_VPP_ACTION_DROP;
+
+ qp->deq_ring[head & mask] = dd->index;
+ head = head + 1;
+ __atomic_store_n (qp->deq_head, head, __ATOMIC_RELEASE);
+
+ if (vc->input_mode == DAQ_VPP_INPUT_MODE_INTERRUPT)
+ {
+ rv = write (qp->deq_fd, &counter_increment, sizeof (counter_increment));
+
+ if (rv != sizeof (counter_increment))
+ retv = DAQ_ERROR;
+ }
+
+ vpp_daq_qpair_unlock (qp);
+ return retv;
+}
+
+static int
+vpp_daq_get_msg_pool_info (void *handle, DAQ_MsgPoolInfo_t *info)
+{
+ VPP_Context_t *vc = (VPP_Context_t *) handle;
+
+ vc->pool.info.available = 128;
+ vc->pool.info.size = 256;
+
+ *info = vc->pool.info;
+
+ return DAQ_SUCCESS;
+}
+
+DAQ_SO_PUBLIC
+const DAQ_ModuleAPI_t DAQ_MODULE_DATA = {
+ /* .api_version = */ DAQ_MODULE_API_VERSION,
+ /* .api_size = */ sizeof (DAQ_ModuleAPI_t),
+ /* .module_version = */ DAQ_VPP_VERSION,
+ /* .name = */ "vpp",
+ /* .type = */ DAQ_TYPE_INTF_CAPABLE | DAQ_TYPE_INLINE_CAPABLE |
+ DAQ_TYPE_MULTI_INSTANCE,
+ /* .load = */ vpp_daq_module_load,
+ /* .unload = */ vpp_daq_module_unload,
+ /* .get_variable_descs = */ vpp_daq_get_variable_descs,
+ /* .instantiate = */ vpp_daq_instantiate,
+ /* .destroy = */ vpp_daq_destroy,
+ /* .set_filter = */ NULL,
+ /* .start = */ vpp_daq_start,
+ /* .inject = */ NULL,
+ /* .inject_relative = */ NULL,
+ /* .interrupt = */ NULL,
+ /* .stop = */ NULL,
+ /* .ioctl = */ NULL,
+ /* .get_stats = */ vpp_daq_get_stats,
+ /* .reset_stats = */ vpp_daq_reset_stats,
+ /* .get_snaplen = */ NULL,
+ /* .get_capabilities = */ vpp_daq_get_capabilities,
+ /* .get_datalink_type = */ vpp_daq_get_datalink_type,
+ /* .config_load = */ NULL,
+ /* .config_swap = */ NULL,
+ /* .config_free = */ NULL,
+ /* .msg_receive = */ vpp_daq_msg_receive,
+ /* .msg_finalize = */ vpp_daq_msg_finalize,
+ /* .get_msg_pool_info = */ vpp_daq_get_msg_pool_info,
+};
Code Review / vpp.git / blobdiff