@@ -102,6 +102,7 @@ noinst_HEADERS = \
${srcdir}/include/odp_name_table_internal.h \
${srcdir}/include/odp_packet_internal.h \
${srcdir}/include/odp_packet_io_internal.h \
+ ${srcdir}/include/odp_packet_io_ipc_internal.h \
${srcdir}/include/odp_packet_io_queue.h \
${srcdir}/include/odp_packet_io_ring_internal.h \
${srcdir}/include/odp_packet_netmap.h \
@@ -113,6 +114,7 @@ noinst_HEADERS = \
${srcdir}/include/odp_queue_internal.h \
${srcdir}/include/odp_schedule_internal.h \
${srcdir}/include/odp_sorted_list_internal.h \
+ ${srcdir}/include/odp_shm_internal.h \
${srcdir}/include/odp_timer_internal.h \
${srcdir}/include/odp_timer_wheel_internal.h \
${srcdir}/include/odp_traffic_mngr_internal.h \
@@ -138,6 +140,7 @@ __LIB__libodp_la_SOURCES = \
odp_packet_io.c \
pktio/ethtool.c \
pktio/io_ops.c \
+ pktio/ipc.c \
pktio/pktio_common.c \
pktio/loop.c \
pktio/netmap.c \
@@ -132,6 +132,9 @@ struct odp_buffer_hdr_t {
uint32_t uarea_size; /* size of user area */
uint32_t segcount; /* segment count */
uint32_t segsize; /* segment size */
+ /* ipc mapped process can not walk over pointers,
+ * offset has to be used */
+ uint64_t ipc_addr_offset[ODP_BUFFER_MAX_SEG];
void *addr[ODP_BUFFER_MAX_SEG]; /* block addrs */
uint64_t order; /* sequence for ordered queues */
queue_entry_t *origin_qe; /* ordered queue origin */
@@ -23,6 +23,7 @@ extern "C" {
#include <odp_classification_datamodel.h>
#include <odp_align_internal.h>
#include <odp_debug_internal.h>
+#include <odp_packet_io_ring_internal.h>
#include <odp/config.h>
#include <odp/hints.h>
@@ -67,6 +68,41 @@ typedef struct {
} pkt_pcap_t;
#endif
+typedef struct {
+ /* TX */
+ struct {
+ _ring_t *send; /**< ODP ring for IPC msg packets
+ indexes transmitted to shared
+ memory */
+ _ring_t *free; /**< ODP ring for IPC msg packets
+ indexes already processed by remote
+ process */
+ } tx;
+ /* RX */
+ struct {
+ _ring_t *recv; /**< ODP ring for IPC msg packets
+ indexes received from shared
+ memory (from remote process) */
+ _ring_t *free; /**< ODP ring for IPC msg packets
+ indexes already processed by
+ current process */
+ } rx; /* slave */
+ void *pool_base; /**< Remote pool base addr */
+ void *pool_mdata_base; /**< Remote pool mdata base addr */
+ uint64_t pkt_size; /**< Packet size in remote pool */
+ odp_pool_t pool; /**< Pool of main process */
+ enum {
+ PKTIO_TYPE_IPC_MASTER = 0, /**< Master is the process which
+ creates shm */
+ PKTIO_TYPE_IPC_SLAVE /**< Slave is the process which
+ connects to shm */
+ } type; /**< define if it's master or slave process */
+ odp_atomic_u32_t ready; /**< 1 - pktio is ready and can recv/send
+ packet, 0 - not yet ready */
+ void *pinfo;
+ odp_shm_t pinfo_shm;
+} _ipc_pktio_t;
+
struct pktio_entry {
const struct pktio_if_ops *ops; /**< Implementation specific methods */
/* These two locks together lock the whole pktio device */
@@ -86,6 +122,7 @@ struct pktio_entry {
pkt_pcap_t pkt_pcap; /**< Using pcap for IO */
#endif
pkt_tap_t pkt_tap; /**< using TAP for IO */
+ _ipc_pktio_t ipc; /**< IPC pktio data */
};
enum {
STATE_START = 0,
@@ -229,6 +266,7 @@ extern const pktio_if_ops_t loopback_pktio_ops;
extern const pktio_if_ops_t pcap_pktio_ops;
#endif
extern const pktio_if_ops_t tap_pktio_ops;
+extern const pktio_if_ops_t ipc_pktio_ops;
extern const pktio_if_ops_t * const pktio_if_ops[];
int sysfs_stats(pktio_entry_t *pktio_entry,
new file mode 100644
@@ -0,0 +1,47 @@
+/* Copyright (c) 2015, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <odp/packet_io.h>
+#include <odp_packet_io_internal.h>
+#include <odp/packet.h>
+#include <odp_packet_internal.h>
+#include <odp_internal.h>
+#include <odp/shared_memory.h>
+
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+/* IPC packet I/O over shared memory ring */
+#include <odp_packet_io_ring_internal.h>
+
+/* number of odp buffers in odp ring queue */
+#define PKTIO_IPC_ENTRIES 4096
+
+/* that struct is exported to shared memory, so that processes can find
+ * each other.
+ */
+struct pktio_info {
+ struct {
+ /* number of buffer in remote pool */
+ int shm_pool_bufs_num;
+ /* size of remote pool */
+ size_t shm_pkt_pool_size;
+ /* size of packet/segment in remote pool */
+ uint32_t shm_pkt_size;
+ /* offset from shared memory block start
+ * to pool_mdata_addr (linux-generic pool specific) */
+ size_t mdata_offset;
+ char pool_name[ODP_POOL_NAME_LEN];
+ } master;
+ struct {
+ /* offset from shared memory block start
+ * to pool_mdata_addr in remote process.
+ * (linux-generic pool specific) */
+ size_t mdata_offset;
+ char pool_name[ODP_POOL_NAME_LEN];
+ } slave;
+} ODP_PACKED;
new file mode 100644
@@ -0,0 +1,21 @@
+/* Copyright (c) 2013, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ODP_SHM_INTERNAL_H_
+#define ODP_SHM_INTERNAL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define _ODP_SHM_PROC_NOCREAT 0x4 /**< Do not create shm if not exist */
+#define _ODP_SHM_O_EXCL 0x8 /**< Do not create shm if exist */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
@@ -19,6 +19,7 @@
#include <odp_schedule_internal.h>
#include <odp_classification_internal.h>
#include <odp_debug_internal.h>
+#include <odp_packet_io_ipc_internal.h>
#include <string.h>
#include <sys/ioctl.h>
@@ -225,8 +225,11 @@ odp_pool_t _pool_create(const char *name,
ODP_ALIGN_ROUNDUP(params->pkt.len, seg_len);
/* Reject create if pkt.len needs too many segments */
- if (blk_size / seg_len > ODP_BUFFER_MAX_SEG)
+ if (blk_size / seg_len > ODP_BUFFER_MAX_SEG) {
+ ODP_ERR("ODP_BUFFER_MAX_SEG exceed %d(%d)\n",
+ blk_size / seg_len, ODP_BUFFER_MAX_SEG);
return ODP_POOL_INVALID;
+ }
p_udata_size = params->pkt.uarea_size;
udata_stride = ODP_ALIGN_ROUNDUP(p_udata_size,
@@ -247,8 +250,12 @@ odp_pool_t _pool_create(const char *name,
/* Validate requested number of buffers against addressable limits */
if (buf_num >
- (ODP_BUFFER_MAX_BUFFERS / (buf_stride / ODP_CACHE_LINE_SIZE)))
+ (ODP_BUFFER_MAX_BUFFERS / (buf_stride / ODP_CACHE_LINE_SIZE))) {
+ ODP_ERR("buf_num %d > then expected %d\n",
+ buf_num, ODP_BUFFER_MAX_BUFFERS /
+ (buf_stride / ODP_CACHE_LINE_SIZE));
return ODP_POOL_INVALID;
+ }
/* Find an unused buffer pool slot and iniitalize it as requested */
for (i = 0; i < ODP_CONFIG_POOLS; i++) {
@@ -476,6 +483,9 @@ int odp_pool_destroy(odp_pool_t pool_hdl)
/* Call fails if pool has allocated buffers */
if (odp_atomic_load_u32(&pool->s.bufcount) < pool->s.buf_num) {
POOL_UNLOCK(&pool->s.lock);
+ ODP_DBG("error: pool has allocated buffers %d/%d\n",
+ odp_atomic_load_u32(&pool->s.bufcount),
+ pool->s.buf_num);
return -1;
}
@@ -14,6 +14,7 @@
#include <odp/debug.h>
#include <odp_debug_internal.h>
#include <odp_align_internal.h>
+#include <odp_shm_internal.h>
#include <odp/config.h>
#include <unistd.h>
@@ -166,7 +167,7 @@ int odp_shm_free(odp_shm_t shm)
return -1;
}
- if (block->flags & ODP_SHM_PROC) {
+ if (block->flags & (ODP_SHM_PROC | _ODP_SHM_PROC_NOCREAT)) {
ret = shm_unlink(block->name);
if (0 != ret) {
ODP_DBG("odp_shm_free: shm_unlink failed\n");
@@ -188,7 +189,7 @@ odp_shm_t odp_shm_reserve(const char *name, uint64_t size, uint64_t align,
int fd = -1;
int map_flag = MAP_SHARED;
/* If already exists: O_EXCL: error, O_TRUNC: truncate to zero */
- int oflag = O_RDWR | O_CREAT | O_TRUNC;
+ int oflag = O_RDWR;
uint64_t alloc_size;
uint64_t page_sz, huge_sz;
#ifdef MAP_HUGETLB
@@ -206,7 +207,14 @@ odp_shm_t odp_shm_reserve(const char *name, uint64_t size, uint64_t align,
alloc_hp_size = (size + align + (huge_sz - 1)) & (-huge_sz);
#endif
- if (flags & ODP_SHM_PROC) {
+ if (flags & ODP_SHM_PROC)
+ oflag |= O_CREAT | O_TRUNC;
+ if (flags & _ODP_SHM_O_EXCL)
+ oflag |= O_EXCL;
+
+ if (flags & (ODP_SHM_PROC | _ODP_SHM_PROC_NOCREAT)) {
+ need_huge_page = 0;
+
/* Creates a file to /dev/shm */
fd = shm_open(name, oflag,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
@@ -18,6 +18,7 @@ const pktio_if_ops_t * const pktio_if_ops[] = {
#ifdef HAVE_PCAP
&pcap_pktio_ops,
#endif
+ &ipc_pktio_ops,
&tap_pktio_ops,
&sock_mmap_pktio_ops,
&sock_mmsg_pktio_ops,
new file mode 100644
@@ -0,0 +1,728 @@
+/* Copyright (c) 2015, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <odp_packet_io_ipc_internal.h>
+#include <odp_debug_internal.h>
+#include <odp_packet_io_internal.h>
+#include <odp/system_info.h>
+#include <odp_shm_internal.h>
+
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+/* MAC address for the "ipc" interface */
+static const char pktio_ipc_mac[] = {0x12, 0x12, 0x12, 0x12, 0x12, 0x12};
+
+static void *_ipc_map_remote_pool(const char *name, size_t size);
+
+static const char *_ipc_odp_buffer_pool_shm_name(odp_pool_t pool_hdl)
+{
+ pool_entry_t *pool;
+ uint32_t pool_id;
+ odp_shm_t shm;
+ odp_shm_info_t info;
+
+ pool_id = pool_handle_to_index(pool_hdl);
+ pool = get_pool_entry(pool_id);
+ shm = pool->s.pool_shm;
+
+ odp_shm_info(shm, &info);
+
+ return info.name;
+}
+
+/**
+* Look up for shared memory object.
+*
+* @param name name of shm object
+*
+* @return 0 on success, otherwise non-zero
+*/
+static int _ipc_shm_lookup(const char *name)
+{
+ int shm;
+
+ shm = shm_open(name, O_RDWR, S_IRUSR | S_IWUSR);
+ if (shm == -1) {
+ if (errno == ENOENT)
+ return -1;
+ ODP_ABORT("shm_open for %s err %s\n",
+ name, strerror(errno));
+ }
+ close(shm);
+ return 0;
+}
+
+static int _ipc_map_pktio_info(pktio_entry_t *pktio_entry,
+ const char *dev,
+ int *slave)
+{
+ struct pktio_info *pinfo;
+ char name[ODP_POOL_NAME_LEN + sizeof("_info")];
+ uint32_t flags;
+ odp_shm_t shm;
+
+ /* Create info about remote pktio */
+ snprintf(name, sizeof(name), "%s_info", dev);
+
+ flags = ODP_SHM_PROC | _ODP_SHM_O_EXCL;
+
+ shm = odp_shm_reserve(name, sizeof(struct pktio_info),
+ ODP_CACHE_LINE_SIZE,
+ flags);
+ if (ODP_SHM_INVALID != shm) {
+ pinfo = odp_shm_addr(shm);
+ pinfo->master.pool_name[0] = 0;
+ *slave = 0;
+ } else {
+ flags = _ODP_SHM_PROC_NOCREAT | _ODP_SHM_O_EXCL;
+ shm = odp_shm_reserve(name, sizeof(struct pktio_info),
+ ODP_CACHE_LINE_SIZE,
+ flags);
+ if (ODP_SHM_INVALID == shm)
+ ODP_ABORT("can not connect to shm\n");
+
+ pinfo = odp_shm_addr(shm);
+ *slave = 1;
+ }
+
+ pktio_entry->s.ipc.pinfo = pinfo;
+ pktio_entry->s.ipc.pinfo_shm = shm;
+
+ return 0;
+}
+
+static int _ipc_master_start(pktio_entry_t *pktio_entry)
+{
+ struct pktio_info *pinfo = pktio_entry->s.ipc.pinfo;
+ int ret;
+ void *ipc_pool_base;
+
+ if (pinfo->slave.mdata_offset == 0)
+ return -1;
+
+ ret = _ipc_shm_lookup(pinfo->slave.pool_name);
+ if (ret) {
+ ODP_DBG("no pool file %s\n", pinfo->slave.pool_name);
+ return -1;
+ }
+
+ ipc_pool_base = _ipc_map_remote_pool(pinfo->slave.pool_name,
+ pinfo->master.shm_pkt_pool_size);
+ pktio_entry->s.ipc.pool_mdata_base = (char *)ipc_pool_base +
+ pinfo->slave.mdata_offset;
+
+ odp_atomic_store_u32(&pktio_entry->s.ipc.ready, 1);
+
+ ODP_DBG("%s started.\n", pktio_entry->s.name);
+ return 0;
+}
+
+static int _ipc_init_master(pktio_entry_t *pktio_entry,
+ const char *dev,
+ odp_pool_t pool)
+{
+ char ipc_shm_name[ODP_POOL_NAME_LEN + sizeof("_m_prod")];
+ pool_entry_t *pool_entry;
+ uint32_t pool_id;
+ struct pktio_info *pinfo;
+ const char *pool_name;
+ odp_shm_t shm;
+
+ pool_id = pool_handle_to_index(pool);
+ pool_entry = get_pool_entry(pool_id);
+
+ if (strlen(dev) > (ODP_POOL_NAME_LEN - sizeof("_m_prod"))) {
+ ODP_DBG("too big ipc name\n");
+ return -1;
+ }
+
+ /* generate name in shm like ipc_pktio_r for
+ * to be processed packets ring.
+ */
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_prod", dev);
+ pktio_entry->s.ipc.tx.send = _ring_create(ipc_shm_name,
+ PKTIO_IPC_ENTRIES,
+ _RING_SHM_PROC | _RING_NO_LIST);
+ if (!pktio_entry->s.ipc.tx.send) {
+ ODP_DBG("pid %d unable to create ipc ring %s name\n",
+ getpid(), ipc_shm_name);
+ return -1;
+ }
+ ODP_DBG("Created IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.tx.send),
+ _ring_free_count(pktio_entry->s.ipc.tx.send));
+
+ /* generate name in shm like ipc_pktio_p for
+ * already processed packets
+ */
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_cons", dev);
+ pktio_entry->s.ipc.tx.free = _ring_create(ipc_shm_name,
+ PKTIO_IPC_ENTRIES,
+ _RING_SHM_PROC | _RING_NO_LIST);
+ if (!pktio_entry->s.ipc.tx.free) {
+ ODP_DBG("pid %d unable to create ipc ring %s name\n",
+ getpid(), ipc_shm_name);
+ goto free_m_prod;
+ }
+ ODP_DBG("Created IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.tx.free),
+ _ring_free_count(pktio_entry->s.ipc.tx.free));
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_prod", dev);
+ pktio_entry->s.ipc.rx.recv = _ring_create(ipc_shm_name,
+ PKTIO_IPC_ENTRIES,
+ _RING_SHM_PROC | _RING_NO_LIST);
+ if (!pktio_entry->s.ipc.rx.recv) {
+ ODP_DBG("pid %d unable to create ipc ring %s name\n",
+ getpid(), ipc_shm_name);
+ goto free_m_cons;
+ }
+ ODP_DBG("Created IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.rx.recv),
+ _ring_free_count(pktio_entry->s.ipc.rx.recv));
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_cons", dev);
+ pktio_entry->s.ipc.rx.free = _ring_create(ipc_shm_name,
+ PKTIO_IPC_ENTRIES,
+ _RING_SHM_PROC | _RING_NO_LIST);
+ if (!pktio_entry->s.ipc.rx.free) {
+ ODP_DBG("pid %d unable to create ipc ring %s name\n",
+ getpid(), ipc_shm_name);
+ goto free_s_prod;
+ }
+ ODP_DBG("Created IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.rx.free),
+ _ring_free_count(pktio_entry->s.ipc.rx.free));
+
+ /* Set up pool name for remote info */
+ pinfo = pktio_entry->s.ipc.pinfo;
+ pool_name = _ipc_odp_buffer_pool_shm_name(pool);
+ memcpy(pinfo->master.pool_name, pool_name, strlen(pool_name));
+ pinfo->master.shm_pkt_pool_size = pool_entry->s.pool_size;
+ pinfo->master.shm_pool_bufs_num = pool_entry->s.buf_num;
+ pinfo->master.shm_pkt_size = pool_entry->s.seg_size;
+ pinfo->master.mdata_offset = pool_entry->s.pool_mdata_addr -
+ pool_entry->s.pool_base_addr;
+ pinfo->slave.mdata_offset = 0;
+
+ pktio_entry->s.ipc.pool = pool;
+
+ ODP_DBG("Pre init... DONE.\n");
+
+ _ipc_master_start(pktio_entry);
+
+ return 0;
+
+free_s_prod:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+free_m_cons:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_cons", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+free_m_prod:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ return -1;
+}
+
+static void _ipc_export_pool(struct pktio_info *pinfo,
+ odp_pool_t pool)
+{
+ pool_entry_t *pool_entry;
+
+ pool_entry = odp_pool_to_entry(pool);
+ if (pool_entry->s.blk_size != pinfo->master.shm_pkt_size)
+ ODP_ABORT("pktio for same name should have the same pool size\n");
+ if (pool_entry->s.buf_num != (unsigned)pinfo->master.shm_pool_bufs_num)
+ ODP_ABORT("pktio for same name should have the same pool size\n");
+
+ snprintf(pinfo->slave.pool_name, ODP_POOL_NAME_LEN, "%s",
+ pool_entry->s.name);
+ pinfo->slave.mdata_offset = pool_entry->s.pool_mdata_addr -
+ pool_entry->s.pool_base_addr;
+}
+
+static void *_ipc_map_remote_pool(const char *name, size_t size)
+{
+ odp_shm_t shm;
+ void *addr;
+
+ ODP_DBG("Mapping remote pool %s, size %ld\n", name, size);
+ shm = odp_shm_reserve(name,
+ size,
+ ODP_CACHE_LINE_SIZE,
+ _ODP_SHM_PROC_NOCREAT);
+ if (shm == ODP_SHM_INVALID)
+ ODP_ABORT("unable map %s\n", name);
+
+ addr = odp_shm_addr(shm);
+ ODP_DBG("MAP master: %p - %p size %ld, pool %s\n",
+ addr, (char *)addr + size, size, name);
+ return addr;
+}
+
+static void *_ipc_shm_map(char *name, size_t size)
+{
+ odp_shm_t shm;
+ int ret;
+
+ ret = _ipc_shm_lookup(name);
+ if (ret == -1)
+ return NULL;
+
+ shm = odp_shm_reserve(name, size,
+ ODP_CACHE_LINE_SIZE,
+ _ODP_SHM_PROC_NOCREAT);
+ if (ODP_SHM_INVALID == shm)
+ ODP_ABORT("unable to map: %s\n", name);
+
+ return odp_shm_addr(shm);
+}
+
+static int _ipc_init_slave(const char *dev,
+ pktio_entry_t *pktio_entry,
+ odp_pool_t pool)
+{
+ if (strlen(dev) > (ODP_POOL_NAME_LEN - sizeof("_slave_r")))
+ ODP_ABORT("too big ipc name\n");
+
+ pktio_entry->s.ipc.pool = pool;
+ return 0;
+}
+
+static int _ipc_slave_start(pktio_entry_t *pktio_entry)
+{
+ char ipc_shm_name[ODP_POOL_NAME_LEN + sizeof("_slave_r")];
+ size_t ring_size = PKTIO_IPC_ENTRIES * sizeof(void *) +
+ sizeof(_ring_t);
+ struct pktio_info *pinfo;
+ void *ipc_pool_base;
+ odp_shm_t shm;
+ const char *dev = pktio_entry->s.name;
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_prod", dev);
+ pktio_entry->s.ipc.rx.recv = _ipc_shm_map(ipc_shm_name, ring_size);
+ if (!pktio_entry->s.ipc.rx.recv) {
+ ODP_DBG("pid %d unable to find ipc ring %s name\n",
+ getpid(), dev);
+ sleep(1);
+ return -1;
+ }
+ ODP_DBG("Connected IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.rx.recv),
+ _ring_free_count(pktio_entry->s.ipc.rx.recv));
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_cons", dev);
+ pktio_entry->s.ipc.rx.free = _ipc_shm_map(ipc_shm_name, ring_size);
+ if (!pktio_entry->s.ipc.rx.free) {
+ ODP_DBG("pid %d unable to find ipc ring %s name\n",
+ getpid(), dev);
+ goto free_m_prod;
+ }
+ ODP_DBG("Connected IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.rx.free),
+ _ring_free_count(pktio_entry->s.ipc.rx.free));
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_prod", dev);
+ pktio_entry->s.ipc.tx.send = _ipc_shm_map(ipc_shm_name, ring_size);
+ if (!pktio_entry->s.ipc.tx.send) {
+ ODP_DBG("pid %d unable to find ipc ring %s name\n",
+ getpid(), dev);
+ goto free_m_cons;
+ }
+ ODP_DBG("Connected IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.tx.send),
+ _ring_free_count(pktio_entry->s.ipc.tx.send));
+
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_cons", dev);
+ pktio_entry->s.ipc.tx.free = _ipc_shm_map(ipc_shm_name, ring_size);
+ if (!pktio_entry->s.ipc.tx.free) {
+ ODP_DBG("pid %d unable to find ipc ring %s name\n",
+ getpid(), dev);
+ goto free_s_prod;
+ }
+ ODP_DBG("Connected IPC ring: %s, count %d, free %d\n",
+ ipc_shm_name, _ring_count(pktio_entry->s.ipc.tx.free),
+ _ring_free_count(pktio_entry->s.ipc.tx.free));
+
+ /* Get info about remote pool */
+ pinfo = pktio_entry->s.ipc.pinfo;
+ ipc_pool_base = _ipc_map_remote_pool(pinfo->master.pool_name,
+ pinfo->master.shm_pkt_pool_size);
+ pktio_entry->s.ipc.pool_mdata_base = (char *)ipc_pool_base +
+ pinfo->master.mdata_offset;
+ pktio_entry->s.ipc.pkt_size = pinfo->master.shm_pkt_size;
+
+ /* @todo: to simplify in linux-generic implementation we create pool for
+ * packets from IPC queue. On receive implementation copies packets to
+ * that pool. Later we can try to reuse original pool without packets
+ * copying. (pkt refcounts needs to be implemented).
+ */
+ _ipc_export_pool(pinfo, pktio_entry->s.ipc.pool);
+
+ odp_atomic_store_u32(&pktio_entry->s.ipc.ready, 1);
+
+ ODP_DBG("%s started.\n", pktio_entry->s.name);
+ return 0;
+
+free_s_prod:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+free_m_cons:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_cons", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+free_m_prod:
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ return -1;
+}
+
+static int ipc_pktio_open(odp_pktio_t id ODP_UNUSED,
+ pktio_entry_t *pktio_entry,
+ const char *dev,
+ odp_pool_t pool)
+{
+ int ret = -1;
+ int slave;
+
+ _ODP_STATIC_ASSERT(ODP_POOL_NAME_LEN == _RING_NAMESIZE,
+ "mismatch pool and ring name arrays");
+
+ if (strncmp(dev, "ipc", 3))
+ return -1;
+
+ odp_atomic_init_u32(&pktio_entry->s.ipc.ready, 0);
+
+ _ipc_map_pktio_info(pktio_entry, dev, &slave);
+ pktio_entry->s.ipc.type = (slave == 0) ? PKTIO_TYPE_IPC_MASTER :
+ PKTIO_TYPE_IPC_SLAVE;
+
+ if (pktio_entry->s.ipc.type == PKTIO_TYPE_IPC_MASTER) {
+ ODP_DBG("process %d is master\n", getpid());
+ ret = _ipc_init_master(pktio_entry, dev, pool);
+ } else {
+ ODP_DBG("process %d is slave\n", getpid());
+ ret = _ipc_init_slave(dev, pktio_entry, pool);
+ }
+
+ return ret;
+}
+
+static inline void *_ipc_buffer_map(odp_buffer_hdr_t *buf,
+ uint32_t offset,
+ uint32_t *seglen,
+ uint32_t limit)
+{
+ int seg_index = offset / buf->segsize;
+ int seg_offset = offset % buf->segsize;
+ void *addr = (char *)buf - buf->ipc_addr_offset[seg_index];
+
+ if (seglen) {
+ uint32_t buf_left = limit - offset;
+ *seglen = seg_offset + buf_left <= buf->segsize ?
+ buf_left : buf->segsize - seg_offset;
+ }
+
+ return (void *)(seg_offset + (uint8_t *)addr);
+}
+
+static inline void *_ipc_packet_map(odp_packet_hdr_t *pkt_hdr,
+ uint32_t offset, uint32_t *seglen)
+{
+ if (offset > pkt_hdr->frame_len)
+ return NULL;
+
+ return _ipc_buffer_map(&pkt_hdr->buf_hdr,
+ pkt_hdr->headroom + offset, seglen,
+ pkt_hdr->headroom + pkt_hdr->frame_len);
+}
+
+static void _ipc_free_ring_packets(_ring_t *r)
+{
+ odp_packet_t r_p_pkts[PKTIO_IPC_ENTRIES];
+ int ret;
+ void **rbuf_p;
+ int i;
+
+ rbuf_p = (void *)&r_p_pkts;
+
+ while (1) {
+ ret = _ring_mc_dequeue_burst(r, rbuf_p,
+ PKTIO_IPC_ENTRIES);
+ if (0 == ret)
+ break;
+ for (i = 0; i < ret; i++) {
+ if (r_p_pkts[i] != ODP_PACKET_INVALID)
+ odp_packet_free(r_p_pkts[i]);
+ }
+ }
+}
+
+static int ipc_pktio_recv(pktio_entry_t *pktio_entry,
+ odp_packet_t pkt_table[], unsigned len)
+{
+ int pkts = 0;
+ int i;
+ _ring_t *r;
+ _ring_t *r_p;
+
+ odp_packet_t remote_pkts[PKTIO_IPC_ENTRIES];
+ void **ipcbufs_p = (void *)&remote_pkts;
+ uint32_t ready = odp_atomic_load_u32(&pktio_entry->s.ipc.ready);
+
+ if (odp_unlikely(!ready)) {
+ ODP_DBG("start pktio is missing before usage?\n");
+ return -1;
+ }
+
+ _ipc_free_ring_packets(pktio_entry->s.ipc.tx.free);
+
+ r = pktio_entry->s.ipc.rx.recv;
+ pkts = _ring_mc_dequeue_burst(r, ipcbufs_p, len);
+ if (odp_unlikely(pkts < 0))
+ ODP_ABORT("error to dequeue no packets\n");
+
+ /* fast path */
+ if (odp_likely(0 == pkts))
+ return 0;
+
+ for (i = 0; i < pkts; i++) {
+ odp_pool_t pool;
+ odp_packet_t pkt;
+ odp_packet_hdr_t phdr;
+ void *ptr;
+ odp_buffer_bits_t handle;
+ int idx; /* Remote packet has coded pool and index.
+ * We need only index.*/
+ void *pkt_data;
+ void *remote_pkt_data;
+
+ if (remote_pkts[i] == ODP_PACKET_INVALID)
+ continue;
+
+ handle.handle = _odp_packet_to_buffer(remote_pkts[i]);
+ idx = handle.index;
+
+ /* Link to packed data. To this line we have Zero-Copy between
+ * processes, to simplify use packet copy in that version which
+ * can be removed later with more advance buffer management
+ * (ref counters).
+ */
+ /* reverse odp_buf_to_hdr() */
+ ptr = (char *)pktio_entry->s.ipc.pool_mdata_base +
+ (idx * ODP_CACHE_LINE_SIZE);
+ memcpy(&phdr, ptr, sizeof(odp_packet_hdr_t));
+
+ /* Allocate new packet. Select*/
+ pool = pktio_entry->s.ipc.pool;
+ if (odp_unlikely(pool == ODP_POOL_INVALID))
+ ODP_ABORT("invalid pool");
+
+ pkt = odp_packet_alloc(pool, phdr.frame_len);
+ if (odp_unlikely(pkt == ODP_PACKET_INVALID)) {
+ /* Original pool might be smaller then
+ * PKTIO_IPC_ENTRIES. If packet can not be
+ * allocated from pool at this time,
+ * simple get in on next recv() call.
+ */
+ if (i == 0)
+ return 0;
+ break;
+ }
+
+ /* Copy packet data. */
+ pkt_data = odp_packet_data(pkt);
+ if (odp_unlikely(!pkt_data))
+ ODP_ABORT("unable to map pkt_data ipc_slave %d\n",
+ (PKTIO_TYPE_IPC_SLAVE ==
+ pktio_entry->s.ipc.type));
+
+ remote_pkt_data = _ipc_packet_map(ptr, 0, NULL);
+ if (odp_unlikely(!remote_pkt_data))
+ ODP_ABORT("unable to map remote_pkt_data, ipc_slave %d\n",
+ (PKTIO_TYPE_IPC_SLAVE ==
+ pktio_entry->s.ipc.type));
+
+ /* @todo fix copy packet!!! */
+ memcpy(pkt_data, remote_pkt_data, phdr.frame_len);
+
+ /* Copy packets L2, L3 parsed offsets and size */
+ copy_packet_parser_metadata(&phdr, odp_packet_hdr(pkt));
+
+ odp_packet_hdr(pkt)->frame_len = phdr.frame_len;
+ odp_packet_hdr(pkt)->headroom = phdr.headroom;
+ odp_packet_hdr(pkt)->tailroom = phdr.tailroom;
+ pkt_table[i] = pkt;
+ }
+
+ /* Now tell other process that we no longer need that buffers.*/
+ r_p = pktio_entry->s.ipc.rx.free;
+ pkts = _ring_mp_enqueue_burst(r_p, ipcbufs_p, i);
+ if (odp_unlikely(pkts < 0))
+ ODP_ABORT("ipc: odp_ring_mp_enqueue_bulk r_p fail\n");
+
+ return pkts;
+}
+
+static int ipc_pktio_send(pktio_entry_t *pktio_entry, odp_packet_t pkt_table[],
+ unsigned len)
+{
+ _ring_t *r;
+ void **rbuf_p;
+ int ret;
+ unsigned i;
+ uint32_t ready = odp_atomic_load_u32(&pktio_entry->s.ipc.ready);
+
+ if (odp_unlikely(!ready))
+ return 0;
+
+ _ipc_free_ring_packets(pktio_entry->s.ipc.tx.free);
+
+ /* Prepare packets: calculate offset from address. */
+ for (i = 0; i < len; i++) {
+ int j;
+ odp_packet_t pkt = pkt_table[i];
+ odp_packet_hdr_t *pkt_hdr = odp_packet_hdr(pkt);
+ odp_buffer_bits_t handle;
+ uint32_t cur_mapped_pool_id =
+ pool_handle_to_index(pktio_entry->s.ipc.pool);
+ uint32_t pool_id;
+
+ /* do copy if packet was allocated from not mapped pool */
+ handle.handle = _odp_packet_to_buffer(pkt);
+ pool_id = handle.pool_id;
+ if (pool_id != cur_mapped_pool_id) {
+ odp_packet_t newpkt;
+
+ newpkt = odp_packet_copy(pkt, pktio_entry->s.ipc.pool);
+ if (newpkt == ODP_PACKET_INVALID)
+ ODP_ABORT("Unable to copy packet\n");
+
+ odp_packet_free(pkt);
+ pkt_table[i] = newpkt;
+ }
+
+ rbuf_p = (void *)&pkt;
+
+ /* buf_hdr.addr can not be used directly in remote process,
+ * convert it to offset
+ */
+ for (j = 0; j < ODP_BUFFER_MAX_SEG; j++) {
+ pkt_hdr->buf_hdr.ipc_addr_offset[j] = (char *)pkt_hdr -
+ (char *)pkt_hdr->buf_hdr.addr[j];
+ }
+ }
+
+ /* Put packets to ring to be processed by other process. */
+ rbuf_p = (void *)&pkt_table[0];
+ r = pktio_entry->s.ipc.tx.send;
+ ret = _ring_mp_enqueue_burst(r, rbuf_p, len);
+ if (odp_unlikely(ret < 0)) {
+ ODP_ERR("pid %d odp_ring_mp_enqueue_bulk fail, ipc_slave %d, ret %d\n",
+ getpid(),
+ (PKTIO_TYPE_IPC_SLAVE == pktio_entry->s.ipc.type),
+ ret);
+ ODP_ERR("odp_ring_full: %d, odp_ring_count %d, _ring_free_count %d\n",
+ _ring_full(r), _ring_count(r),
+ _ring_free_count(r));
+ }
+
+ return ret;
+}
+
+static int ipc_mtu_get(pktio_entry_t *pktio_entry ODP_UNUSED)
+{
+ /* mtu not limited, pool settings are used. */
+ return (9 * 1024);
+}
+
+static int ipc_mac_addr_get(pktio_entry_t *pktio_entry ODP_UNUSED,
+ void *mac_addr)
+{
+ memcpy(mac_addr, pktio_ipc_mac, ETH_ALEN);
+ return ETH_ALEN;
+}
+
+static int ipc_start(pktio_entry_t *pktio_entry)
+{
+ uint32_t ready = odp_atomic_load_u32(&pktio_entry->s.ipc.ready);
+
+ if (ready) {
+ ODP_ABORT("%s Already started\n", pktio_entry->s.name);
+ return -1;
+ }
+
+ if (pktio_entry->s.ipc.type == PKTIO_TYPE_IPC_MASTER)
+ return _ipc_master_start(pktio_entry);
+ else
+ return _ipc_slave_start(pktio_entry);
+}
+
+static int ipc_stop(pktio_entry_t *pktio_entry)
+{
+ odp_atomic_store_u32(&pktio_entry->s.ipc.ready, 0);
+
+ _ipc_free_ring_packets(pktio_entry->s.ipc.tx.send);
+ /* other process can transfer packets from one ring to
+ * other, use delay here to free that packets. */
+ sleep(1);
+ _ipc_free_ring_packets(pktio_entry->s.ipc.tx.free);
+
+ return 0;
+}
+
+static int ipc_close(pktio_entry_t *pktio_entry)
+{
+ ipc_stop(pktio_entry);
+
+ if (pktio_entry->s.ipc.type == PKTIO_TYPE_IPC_MASTER) {
+ char ipc_shm_name[ODP_POOL_NAME_LEN + sizeof("_m_prod")];
+ char *dev = pktio_entry->s.name;
+ odp_shm_t shm;
+
+ /* unlink this pktio info */
+ odp_shm_free(pktio_entry->s.ipc.pinfo_shm);
+
+ /* unlink rings */
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_cons", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_s_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_cons", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ snprintf(ipc_shm_name, sizeof(ipc_shm_name), "%s_m_prod", dev);
+ shm = odp_shm_lookup(ipc_shm_name);
+ odp_shm_free(shm);
+ }
+
+ return 0;
+}
+
+const pktio_if_ops_t ipc_pktio_ops = {
+ .init = NULL,
+ .term = NULL,
+ .open = ipc_pktio_open,
+ .close = ipc_close,
+ .recv = ipc_pktio_recv,
+ .send = ipc_pktio_send,
+ .start = ipc_start,
+ .stop = ipc_stop,
+ .mtu_get = ipc_mtu_get,
+ .promisc_mode_set = NULL,
+ .promisc_mode_get = NULL,
+ .mac_get = ipc_mac_addr_get
+};
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org> --- platform/linux-generic/Makefile.am | 3 + .../linux-generic/include/odp_buffer_internal.h | 3 + .../linux-generic/include/odp_packet_io_internal.h | 38 ++ .../include/odp_packet_io_ipc_internal.h | 47 ++ platform/linux-generic/include/odp_shm_internal.h | 21 + platform/linux-generic/odp_packet_io.c | 1 + platform/linux-generic/odp_pool.c | 14 +- platform/linux-generic/odp_shared_memory.c | 14 +- platform/linux-generic/pktio/io_ops.c | 1 + platform/linux-generic/pktio/ipc.c | 728 +++++++++++++++++++++ 10 files changed, 865 insertions(+), 5 deletions(-) create mode 100644 platform/linux-generic/include/odp_packet_io_ipc_internal.h create mode 100644 platform/linux-generic/include/odp_shm_internal.h create mode 100644 platform/linux-generic/pktio/ipc.c