X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_mr.c;h=dbcf0aac9d2c8d96045fdcb2cd74678f352bd572;hb=6f52bd338374e4bd54ff1f872928e53ebdf1108d;hp=700d83d1bc83f7bdc7b44acb6d8580b1e10e23e8;hpb=dbeba4cf18a5e1d9f7aaa284457bf15c351eb965;p=dpdk.git

diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 700d83d1bc..dbcf0aac9d 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -3,22 +3,18 @@
  * Copyright 2016 Mellanox Technologies, Ltd
  */
 
-#ifdef PEDANTIC
-#pragma GCC diagnostic ignored "-Wpedantic"
-#endif
-#include <infiniband/verbs.h>
-#ifdef PEDANTIC
-#pragma GCC diagnostic error "-Wpedantic"
-#endif
-
+#include <rte_eal_memconfig.h>
 #include <rte_mempool.h>
 #include <rte_malloc.h>
 #include <rte_rwlock.h>
+#include <rte_bus_pci.h>
+
+#include <mlx5_common_mp.h>
+#include <mlx5_common_mr.h>
 
 #include "mlx5.h"
 #include "mlx5_mr.h"
 #include "mlx5_rxtx.h"
-#include "mlx5_glue.h"
 
 struct mr_find_contig_memsegs_data {
 	uintptr_t addr;
@@ -33,755 +29,6 @@ struct mr_update_mp_data {
 	int ret;
 };
 
-/**
- * Expand B-tree table to a given size. Can't be called with holding
- * memory_hotplug_lock or priv->mr.rwlock due to rte_realloc().
- *
- * @param bt
- *   Pointer to B-tree structure.
- * @param n
- *   Number of entries for expansion.
- *
- * @return
- *   0 on success, -1 on failure.
- */
-static int
-mr_btree_expand(struct mlx5_mr_btree *bt, int n)
-{
-	void *mem;
-	int ret = 0;
-
-	if (n <= bt->size)
-		return ret;
-	/*
-	 * Downside of directly using rte_realloc() is that SOCKET_ID_ANY is
-	 * used inside if there's no room to expand. Because this is a quite
-	 * rare case and a part of very slow path, it is very acceptable.
-	 * Initially cache_bh[] will be given practically enough space and once
-	 * it is expanded, expansion wouldn't be needed again ever.
-	 */
-	mem = rte_realloc(bt->table, n * sizeof(struct mlx5_mr_cache), 0);
-	if (mem == NULL) {
-		/* Not an error, B-tree search will be skipped. */
-		DRV_LOG(WARNING, "failed to expand MR B-tree (%p) table",
-			(void *)bt);
-		ret = -1;
-	} else {
-		DRV_LOG(DEBUG, "expanded MR B-tree table (size=%u)", n);
-		bt->table = mem;
-		bt->size = n;
-	}
-	return ret;
-}
-
-/**
- * Look up LKey from given B-tree lookup table, store the last index and return
- * searched LKey.
- *
- * @param bt
- *   Pointer to B-tree structure.
- * @param[out] idx
- *   Pointer to index. Even on search failure, returns index where it stops
- *   searching so that index can be used when inserting a new entry.
- * @param addr
- *   Search key.
- *
- * @return
- *   Searched LKey on success, UINT32_MAX on no match.
- */
-static uint32_t
-mr_btree_lookup(struct mlx5_mr_btree *bt, uint16_t *idx, uintptr_t addr)
-{
-	struct mlx5_mr_cache *lkp_tbl;
-	uint16_t n;
-	uint16_t base = 0;
-
-	assert(bt != NULL);
-	lkp_tbl = *bt->table;
-	n = bt->len;
-	/* First entry must be NULL for comparison. */
-	assert(bt->len > 0 || (lkp_tbl[0].start == 0 &&
-			       lkp_tbl[0].lkey == UINT32_MAX));
-	/* Binary search. */
-	do {
-		register uint16_t delta = n >> 1;
-
-		if (addr < lkp_tbl[base + delta].start) {
-			n = delta;
-		} else {
-			base += delta;
-			n -= delta;
-		}
-	} while (n > 1);
-	assert(addr >= lkp_tbl[base].start);
-	*idx = base;
-	if (addr < lkp_tbl[base].end)
-		return lkp_tbl[base].lkey;
-	/* Not found. */
-	return UINT32_MAX;
-}
-
-/**
- * Insert an entry to B-tree lookup table.
- *
- * @param bt
- *   Pointer to B-tree structure.
- * @param entry
- *   Pointer to new entry to insert.
- *
- * @return
- *   0 on success, -1 on failure.
- */
-static int
-mr_btree_insert(struct mlx5_mr_btree *bt, struct mlx5_mr_cache *entry)
-{
-	struct mlx5_mr_cache *lkp_tbl;
-	uint16_t idx = 0;
-	size_t shift;
-
-	assert(bt != NULL);
-	assert(bt->len <= bt->size);
-	assert(bt->len > 0);
-	lkp_tbl = *bt->table;
-	/* Find out the slot for insertion. */
-	if (mr_btree_lookup(bt, &idx, entry->start) != UINT32_MAX) {
-		DRV_LOG(DEBUG,
-			"abort insertion to B-tree(%p): already exist at"
-			" idx=%u [0x%" PRIxPTR ", 0x%" PRIxPTR ") lkey=0x%x",
-			(void *)bt, idx, entry->start, entry->end, entry->lkey);
-		/* Already exist, return. */
-		return 0;
-	}
-	/* If table is full, return error. */
-	if (unlikely(bt->len == bt->size)) {
-		bt->overflow = 1;
-		return -1;
-	}
-	/* Insert entry. */
-	++idx;
-	shift = (bt->len - idx) * sizeof(struct mlx5_mr_cache);
-	if (shift)
-		memmove(&lkp_tbl[idx + 1], &lkp_tbl[idx], shift);
-	lkp_tbl[idx] = *entry;
-	bt->len++;
-	DRV_LOG(DEBUG,
-		"inserted B-tree(%p)[%u],"
-		" [0x%" PRIxPTR ", 0x%" PRIxPTR ") lkey=0x%x",
-		(void *)bt, idx, entry->start, entry->end, entry->lkey);
-	return 0;
-}
-
-/**
- * Initialize B-tree and allocate memory for lookup table.
- *
- * @param bt
- *   Pointer to B-tree structure.
- * @param n
- *   Number of entries to allocate.
- * @param socket
- *   NUMA socket on which memory must be allocated.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_mr_btree_init(struct mlx5_mr_btree *bt, int n, int socket)
-{
-	if (bt == NULL) {
-		rte_errno = EINVAL;
-		return -rte_errno;
-	}
-	assert(!bt->table && !bt->size);
-	memset(bt, 0, sizeof(*bt));
-	bt->table = rte_calloc_socket("B-tree table",
-				      n, sizeof(struct mlx5_mr_cache),
-				      0, socket);
-	if (bt->table == NULL) {
-		rte_errno = ENOMEM;
-		DEBUG("failed to allocate memory for btree cache on socket %d",
-		      socket);
-		return -rte_errno;
-	}
-	bt->size = n;
-	/* First entry must be NULL for binary search. */
-	(*bt->table)[bt->len++] = (struct mlx5_mr_cache) {
-		.lkey = UINT32_MAX,
-	};
-	DEBUG("initialized B-tree %p with table %p",
-	      (void *)bt, (void *)bt->table);
-	return 0;
-}
-
-/**
- * Free B-tree resources.
- *
- * @param bt
- *   Pointer to B-tree structure.
- */
-void
-mlx5_mr_btree_free(struct mlx5_mr_btree *bt)
-{
-	if (bt == NULL)
-		return;
-	DEBUG("freeing B-tree %p with table %p",
-	      (void *)bt, (void *)bt->table);
-	rte_free(bt->table);
-	memset(bt, 0, sizeof(*bt));
-}
-
-/**
- * Dump all the entries in a B-tree
- *
- * @param bt
- *   Pointer to B-tree structure.
- */
-void
-mlx5_mr_btree_dump(struct mlx5_mr_btree *bt __rte_unused)
-{
-#ifndef NDEBUG
-	int idx;
-	struct mlx5_mr_cache *lkp_tbl;
-
-	if (bt == NULL)
-		return;
-	lkp_tbl = *bt->table;
-	for (idx = 0; idx < bt->len; ++idx) {
-		struct mlx5_mr_cache *entry = &lkp_tbl[idx];
-
-		DEBUG("B-tree(%p)[%u],"
-		      " [0x%" PRIxPTR ", 0x%" PRIxPTR ") lkey=0x%x",
-		      (void *)bt, idx, entry->start, entry->end, entry->lkey);
-	}
-#endif
-}
-
-/**
- * Find virtually contiguous memory chunk in a given MR.
- *
- * @param dev
- *   Pointer to MR structure.
- * @param[out] entry
- *   Pointer to returning MR cache entry. If not found, this will not be
- *   updated.
- * @param start_idx
- *   Start index of the memseg bitmap.
- *
- * @return
- *   Next index to go on lookup.
- */
-static int
-mr_find_next_chunk(struct mlx5_mr *mr, struct mlx5_mr_cache *entry,
-		   int base_idx)
-{
-	uintptr_t start = 0;
-	uintptr_t end = 0;
-	uint32_t idx = 0;
-
-	/* MR for external memory doesn't have memseg list. */
-	if (mr->msl == NULL) {
-		struct ibv_mr *ibv_mr = mr->ibv_mr;
-
-		assert(mr->ms_bmp_n == 1);
-		assert(mr->ms_n == 1);
-		assert(base_idx == 0);
-		/*
-		 * Can't search it from memseg list but get it directly from
-		 * verbs MR as there's only one chunk.
-		 */
-		entry->start = (uintptr_t)ibv_mr->addr;
-		entry->end = (uintptr_t)ibv_mr->addr + mr->ibv_mr->length;
-		entry->lkey = rte_cpu_to_be_32(mr->ibv_mr->lkey);
-		/* Returning 1 ends iteration. */
-		return 1;
-	}
-	for (idx = base_idx; idx < mr->ms_bmp_n; ++idx) {
-		if (rte_bitmap_get(mr->ms_bmp, idx)) {
-			const struct rte_memseg_list *msl;
-			const struct rte_memseg *ms;
-
-			msl = mr->msl;
-			ms = rte_fbarray_get(&msl->memseg_arr,
-					     mr->ms_base_idx + idx);
-			assert(msl->page_sz == ms->hugepage_sz);
-			if (!start)
-				start = ms->addr_64;
-			end = ms->addr_64 + ms->hugepage_sz;
-		} else if (start) {
-			/* Passed the end of a fragment. */
-			break;
-		}
-	}
-	if (start) {
-		/* Found one chunk. */
-		entry->start = start;
-		entry->end = end;
-		entry->lkey = rte_cpu_to_be_32(mr->ibv_mr->lkey);
-	}
-	return idx;
-}
-
-/**
- * Insert a MR to the global B-tree cache. It may fail due to low-on-memory.
- * Then, this entry will have to be searched by mr_lookup_dev_list() in
- * mlx5_mr_create() on miss.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param mr
- *   Pointer to MR to insert.
- *
- * @return
- *   0 on success, -1 on failure.
- */
-static int
-mr_insert_dev_cache(struct rte_eth_dev *dev, struct mlx5_mr *mr)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	unsigned int n;
-
-	DRV_LOG(DEBUG, "port %u inserting MR(%p) to global cache",
-		dev->data->port_id, (void *)mr);
-	for (n = 0; n < mr->ms_bmp_n; ) {
-		struct mlx5_mr_cache entry;
-
-		memset(&entry, 0, sizeof(entry));
-		/* Find a contiguous chunk and advance the index. */
-		n = mr_find_next_chunk(mr, &entry, n);
-		if (!entry.end)
-			break;
-		if (mr_btree_insert(&priv->mr.cache, &entry) < 0) {
-			/*
-			 * Overflowed, but the global table cannot be expanded
-			 * because of deadlock.
-			 */
-			return -1;
-		}
-	}
-	return 0;
-}
-
-/**
- * Look up address in the original global MR list.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param[out] entry
- *   Pointer to returning MR cache entry. If no match, this will not be updated.
- * @param addr
- *   Search key.
- *
- * @return
- *   Found MR on match, NULL otherwise.
- */
-static struct mlx5_mr *
-mr_lookup_dev_list(struct rte_eth_dev *dev, struct mlx5_mr_cache *entry,
-		   uintptr_t addr)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr *mr;
-
-	/* Iterate all the existing MRs. */
-	LIST_FOREACH(mr, &priv->mr.mr_list, mr) {
-		unsigned int n;
-
-		if (mr->ms_n == 0)
-			continue;
-		for (n = 0; n < mr->ms_bmp_n; ) {
-			struct mlx5_mr_cache ret;
-
-			memset(&ret, 0, sizeof(ret));
-			n = mr_find_next_chunk(mr, &ret, n);
-			if (addr >= ret.start && addr < ret.end) {
-				/* Found. */
-				*entry = ret;
-				return mr;
-			}
-		}
-	}
-	return NULL;
-}
-
-/**
- * Look up address on device.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param[out] entry
- *   Pointer to returning MR cache entry. If no match, this will not be updated.
- * @param addr
- *   Search key.
- *
- * @return
- *   Searched LKey on success, UINT32_MAX on failure and rte_errno is set.
- */
-static uint32_t
-mr_lookup_dev(struct rte_eth_dev *dev, struct mlx5_mr_cache *entry,
-	      uintptr_t addr)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	uint16_t idx;
-	uint32_t lkey = UINT32_MAX;
-	struct mlx5_mr *mr;
-
-	/*
-	 * If the global cache has overflowed since it failed to expand the
-	 * B-tree table, it can't have all the existing MRs. Then, the address
-	 * has to be searched by traversing the original MR list instead, which
-	 * is very slow path. Otherwise, the global cache is all inclusive.
-	 */
-	if (!unlikely(priv->mr.cache.overflow)) {
-		lkey = mr_btree_lookup(&priv->mr.cache, &idx, addr);
-		if (lkey != UINT32_MAX)
-			*entry = (*priv->mr.cache.table)[idx];
-	} else {
-		/* Falling back to the slowest path. */
-		mr = mr_lookup_dev_list(dev, entry, addr);
-		if (mr != NULL)
-			lkey = entry->lkey;
-	}
-	assert(lkey == UINT32_MAX || (addr >= entry->start &&
-				      addr < entry->end));
-	return lkey;
-}
-
-/**
- * Free MR resources. MR lock must not be held to avoid a deadlock. rte_free()
- * can raise memory free event and the callback function will spin on the lock.
- *
- * @param mr
- *   Pointer to MR to free.
- */
-static void
-mr_free(struct mlx5_mr *mr)
-{
-	if (mr == NULL)
-		return;
-	DRV_LOG(DEBUG, "freeing MR(%p):", (void *)mr);
-	if (mr->ibv_mr != NULL)
-		claim_zero(mlx5_glue->dereg_mr(mr->ibv_mr));
-	if (mr->ms_bmp != NULL)
-		rte_bitmap_free(mr->ms_bmp);
-	rte_free(mr);
-}
-
-/**
- * Releass resources of detached MR having no online entry.
- *
- * @param dev
- *   Pointer to Ethernet device.
- */
-static void
-mlx5_mr_garbage_collect(struct rte_eth_dev *dev)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr *mr_next;
-	struct mlx5_mr_list free_list = LIST_HEAD_INITIALIZER(free_list);
-
-	/* Must be called from the primary process. */
-	assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
-	/*
-	 * MR can't be freed with holding the lock because rte_free() could call
-	 * memory free callback function. This will be a deadlock situation.
-	 */
-	rte_rwlock_write_lock(&priv->mr.rwlock);
-	/* Detach the whole free list and release it after unlocking. */
-	free_list = priv->mr.mr_free_list;
-	LIST_INIT(&priv->mr.mr_free_list);
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
-	/* Release resources. */
-	mr_next = LIST_FIRST(&free_list);
-	while (mr_next != NULL) {
-		struct mlx5_mr *mr = mr_next;
-
-		mr_next = LIST_NEXT(mr, mr);
-		mr_free(mr);
-	}
-}
-
-/* Called during rte_memseg_contig_walk() by mlx5_mr_create(). */
-static int
-mr_find_contig_memsegs_cb(const struct rte_memseg_list *msl,
-			  const struct rte_memseg *ms, size_t len, void *arg)
-{
-	struct mr_find_contig_memsegs_data *data = arg;
-
-	if (data->addr < ms->addr_64 || data->addr >= ms->addr_64 + len)
-		return 0;
-	/* Found, save it and stop walking. */
-	data->start = ms->addr_64;
-	data->end = ms->addr_64 + len;
-	data->msl = msl;
-	return 1;
-}
-
-/**
- * Create a new global Memroy Region (MR) for a missing virtual address.
- * Register entire virtually contiguous memory chunk around the address.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param[out] entry
- *   Pointer to returning MR cache entry, found in the global cache or newly
- *   created. If failed to create one, this will not be updated.
- * @param addr
- *   Target virtual address to register.
- *
- * @return
- *   Searched LKey on success, UINT32_MAX on failure and rte_errno is set.
- */
-static uint32_t
-mlx5_mr_create(struct rte_eth_dev *dev, struct mlx5_mr_cache *entry,
-	       uintptr_t addr)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
-	const struct rte_memseg_list *msl;
-	const struct rte_memseg *ms;
-	struct mlx5_mr *mr = NULL;
-	size_t len;
-	uint32_t ms_n;
-	uint32_t bmp_size;
-	void *bmp_mem;
-	int ms_idx_shift = -1;
-	unsigned int n;
-	struct mr_find_contig_memsegs_data data = {
-		.addr = addr,
-	};
-	struct mr_find_contig_memsegs_data data_re;
-
-	DRV_LOG(DEBUG, "port %u creating a MR using address (%p)",
-		dev->data->port_id, (void *)addr);
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
-		DRV_LOG(WARNING,
-			"port %u using address (%p) of unregistered mempool"
-			" in secondary process, please create mempool"
-			" before rte_eth_dev_start()",
-			dev->data->port_id, (void *)addr);
-		rte_errno = EPERM;
-		goto err_nolock;
-	}
-	/*
-	 * Release detached MRs if any. This can't be called with holding either
-	 * memory_hotplug_lock or priv->mr.rwlock. MRs on the free list have
-	 * been detached by the memory free event but it couldn't be released
-	 * inside the callback due to deadlock. As a result, releasing resources
-	 * is quite opportunistic.
-	 */
-	mlx5_mr_garbage_collect(dev);
-	/*
-	 * Find out a contiguous virtual address chunk in use, to which the
-	 * given address belongs, in order to register maximum range. In the
-	 * best case where mempools are not dynamically recreated and
-	 * '--socket-mem' is specified as an EAL option, it is very likely to
-	 * have only one MR(LKey) per a socket and per a hugepage-size even
-	 * though the system memory is highly fragmented.
-	 */
-	if (!rte_memseg_contig_walk(mr_find_contig_memsegs_cb, &data)) {
-		DRV_LOG(WARNING,
-			"port %u unable to find virtually contiguous"
-			" chunk for address (%p)."
-			" rte_memseg_contig_walk() failed.",
-			dev->data->port_id, (void *)addr);
-		rte_errno = ENXIO;
-		goto err_nolock;
-	}
-alloc_resources:
-	/* Addresses must be page-aligned. */
-	assert(rte_is_aligned((void *)data.start, data.msl->page_sz));
-	assert(rte_is_aligned((void *)data.end, data.msl->page_sz));
-	msl = data.msl;
-	ms = rte_mem_virt2memseg((void *)data.start, msl);
-	len = data.end - data.start;
-	assert(msl->page_sz == ms->hugepage_sz);
-	/* Number of memsegs in the range. */
-	ms_n = len / msl->page_sz;
-	DEBUG("port %u extending %p to [0x%" PRIxPTR ", 0x%" PRIxPTR "),"
-	      " page_sz=0x%" PRIx64 ", ms_n=%u",
-	      dev->data->port_id, (void *)addr,
-	      data.start, data.end, msl->page_sz, ms_n);
-	/* Size of memory for bitmap. */
-	bmp_size = rte_bitmap_get_memory_footprint(ms_n);
-	mr = rte_zmalloc_socket(NULL,
-				RTE_ALIGN_CEIL(sizeof(*mr),
-					       RTE_CACHE_LINE_SIZE) +
-				bmp_size,
-				RTE_CACHE_LINE_SIZE, msl->socket_id);
-	if (mr == NULL) {
-		DEBUG("port %u unable to allocate memory for a new MR of"
-		      " address (%p).",
-		      dev->data->port_id, (void *)addr);
-		rte_errno = ENOMEM;
-		goto err_nolock;
-	}
-	mr->msl = msl;
-	/*
-	 * Save the index of the first memseg and initialize memseg bitmap. To
-	 * see if a memseg of ms_idx in the memseg-list is still valid, check:
-	 *	rte_bitmap_get(mr->bmp, ms_idx - mr->ms_base_idx)
-	 */
-	mr->ms_base_idx = rte_fbarray_find_idx(&msl->memseg_arr, ms);
-	bmp_mem = RTE_PTR_ALIGN_CEIL(mr + 1, RTE_CACHE_LINE_SIZE);
-	mr->ms_bmp = rte_bitmap_init(ms_n, bmp_mem, bmp_size);
-	if (mr->ms_bmp == NULL) {
-		DEBUG("port %u unable to initialize bitamp for a new MR of"
-		      " address (%p).",
-		      dev->data->port_id, (void *)addr);
-		rte_errno = EINVAL;
-		goto err_nolock;
-	}
-	/*
-	 * Should recheck whether the extended contiguous chunk is still valid.
-	 * Because memory_hotplug_lock can't be held if there's any memory
-	 * related calls in a critical path, resource allocation above can't be
-	 * locked. If the memory has been changed at this point, try again with
-	 * just single page. If not, go on with the big chunk atomically from
-	 * here.
-	 */
-	rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
-	data_re = data;
-	if (len > msl->page_sz &&
-	    !rte_memseg_contig_walk(mr_find_contig_memsegs_cb, &data_re)) {
-		DEBUG("port %u unable to find virtually contiguous"
-		      " chunk for address (%p)."
-		      " rte_memseg_contig_walk() failed.",
-		      dev->data->port_id, (void *)addr);
-		rte_errno = ENXIO;
-		goto err_memlock;
-	}
-	if (data.start != data_re.start || data.end != data_re.end) {
-		/*
-		 * The extended contiguous chunk has been changed. Try again
-		 * with single memseg instead.
-		 */
-		data.start = RTE_ALIGN_FLOOR(addr, msl->page_sz);
-		data.end = data.start + msl->page_sz;
-		rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
-		mr_free(mr);
-		goto alloc_resources;
-	}
-	assert(data.msl == data_re.msl);
-	rte_rwlock_write_lock(&priv->mr.rwlock);
-	/*
-	 * Check the address is really missing. If other thread already created
-	 * one or it is not found due to overflow, abort and return.
-	 */
-	if (mr_lookup_dev(dev, entry, addr) != UINT32_MAX) {
-		/*
-		 * Insert to the global cache table. It may fail due to
-		 * low-on-memory. Then, this entry will have to be searched
-		 * here again.
-		 */
-		mr_btree_insert(&priv->mr.cache, entry);
-		DEBUG("port %u found MR for %p on final lookup, abort",
-		      dev->data->port_id, (void *)addr);
-		rte_rwlock_write_unlock(&priv->mr.rwlock);
-		rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
-		/*
-		 * Must be unlocked before calling rte_free() because
-		 * mlx5_mr_mem_event_free_cb() can be called inside.
-		 */
-		mr_free(mr);
-		return entry->lkey;
-	}
-	/*
-	 * Trim start and end addresses for verbs MR. Set bits for registering
-	 * memsegs but exclude already registered ones. Bitmap can be
-	 * fragmented.
-	 */
-	for (n = 0; n < ms_n; ++n) {
-		uintptr_t start;
-		struct mlx5_mr_cache ret;
-
-		memset(&ret, 0, sizeof(ret));
-		start = data_re.start + n * msl->page_sz;
-		/* Exclude memsegs already registered by other MRs. */
-		if (mr_lookup_dev(dev, &ret, start) == UINT32_MAX) {
-			/*
-			 * Start from the first unregistered memseg in the
-			 * extended range.
-			 */
-			if (ms_idx_shift == -1) {
-				mr->ms_base_idx += n;
-				data.start = start;
-				ms_idx_shift = n;
-			}
-			data.end = start + msl->page_sz;
-			rte_bitmap_set(mr->ms_bmp, n - ms_idx_shift);
-			++mr->ms_n;
-		}
-	}
-	len = data.end - data.start;
-	mr->ms_bmp_n = len / msl->page_sz;
-	assert(ms_idx_shift + mr->ms_bmp_n <= ms_n);
-	/*
-	 * Finally create a verbs MR for the memory chunk. ibv_reg_mr() can be
-	 * called with holding the memory lock because it doesn't use
-	 * mlx5_alloc_buf_extern() which eventually calls rte_malloc_socket()
-	 * through mlx5_alloc_verbs_buf().
-	 */
-	mr->ibv_mr = mlx5_glue->reg_mr(priv->pd, (void *)data.start, len,
-				       IBV_ACCESS_LOCAL_WRITE);
-	if (mr->ibv_mr == NULL) {
-		DEBUG("port %u fail to create a verbs MR for address (%p)",
-		      dev->data->port_id, (void *)addr);
-		rte_errno = EINVAL;
-		goto err_mrlock;
-	}
-	assert((uintptr_t)mr->ibv_mr->addr == data.start);
-	assert(mr->ibv_mr->length == len);
-	LIST_INSERT_HEAD(&priv->mr.mr_list, mr, mr);
-	DEBUG("port %u MR CREATED (%p) for %p:\n"
-	      "  [0x%" PRIxPTR ", 0x%" PRIxPTR "),"
-	      " lkey=0x%x base_idx=%u ms_n=%u, ms_bmp_n=%u",
-	      dev->data->port_id, (void *)mr, (void *)addr,
-	      data.start, data.end, rte_cpu_to_be_32(mr->ibv_mr->lkey),
-	      mr->ms_base_idx, mr->ms_n, mr->ms_bmp_n);
-	/* Insert to the global cache table. */
-	mr_insert_dev_cache(dev, mr);
-	/* Fill in output data. */
-	mr_lookup_dev(dev, entry, addr);
-	/* Lookup can't fail. */
-	assert(entry->lkey != UINT32_MAX);
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
-	rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
-	return entry->lkey;
-err_mrlock:
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
-err_memlock:
-	rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
-err_nolock:
-	/*
-	 * In case of error, as this can be called in a datapath, a warning
-	 * message per an error is preferable instead. Must be unlocked before
-	 * calling rte_free() because mlx5_mr_mem_event_free_cb() can be called
-	 * inside.
-	 */
-	mr_free(mr);
-	return UINT32_MAX;
-}
-
-/**
- * Rebuild the global B-tree cache of device from the original MR list.
- *
- * @param dev
- *   Pointer to Ethernet device.
- */
-static void
-mr_rebuild_dev_cache(struct rte_eth_dev *dev)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr *mr;
-
-	DRV_LOG(DEBUG, "port %u rebuild dev cache[]", dev->data->port_id);
-	/* Flush cache to rebuild. */
-	priv->mr.cache.len = 1;
-	priv->mr.cache.overflow = 0;
-	/* Iterate all the existing MRs. */
-	LIST_FOREACH(mr, &priv->mr.mr_list, mr)
-		if (mr_insert_dev_cache(dev, mr) < 0)
-			return;
-}
-
 /**
  * Callback for memory free event. Iterate freed memsegs and check whether it
  * belongs to an existing MR. If found, clear the bit from bitmap of MR. As a
@@ -793,60 +40,61 @@ mr_rebuild_dev_cache(struct rte_eth_dev *dev)
  * The global cache must be rebuilt if there's any change and this event has to
  * be propagated to dataplane threads to flush the local caches.
  *
- * @param dev
- *   Pointer to Ethernet device.
+ * @param sh
+ *   Pointer to the Ethernet device shared context.
  * @param addr
  *   Address of freed memory.
  * @param len
  *   Size of freed memory.
  */
 static void
-mlx5_mr_mem_event_free_cb(struct rte_eth_dev *dev, const void *addr, size_t len)
+mlx5_mr_mem_event_free_cb(struct mlx5_dev_ctx_shared *sh,
+			  const void *addr, size_t len)
 {
-	struct mlx5_priv *priv = dev->data->dev_private;
 	const struct rte_memseg_list *msl;
 	struct mlx5_mr *mr;
 	int ms_n;
 	int i;
 	int rebuild = 0;
 
-	DEBUG("port %u free callback: addr=%p, len=%zu",
-	      dev->data->port_id, addr, len);
+	DEBUG("device %s free callback: addr=%p, len=%zu",
+	      sh->ibdev_name, addr, len);
 	msl = rte_mem_virt2memseg_list(addr);
 	/* addr and len must be page-aligned. */
-	assert((uintptr_t)addr == RTE_ALIGN((uintptr_t)addr, msl->page_sz));
-	assert(len == RTE_ALIGN(len, msl->page_sz));
+	MLX5_ASSERT((uintptr_t)addr ==
+		    RTE_ALIGN((uintptr_t)addr, msl->page_sz));
+	MLX5_ASSERT(len == RTE_ALIGN(len, msl->page_sz));
 	ms_n = len / msl->page_sz;
-	rte_rwlock_write_lock(&priv->mr.rwlock);
+	rte_rwlock_write_lock(&sh->share_cache.rwlock);
 	/* Clear bits of freed memsegs from MR. */
 	for (i = 0; i < ms_n; ++i) {
 		const struct rte_memseg *ms;
-		struct mlx5_mr_cache entry;
+		struct mr_cache_entry entry;
 		uintptr_t start;
 		int ms_idx;
 		uint32_t pos;
 
 		/* Find MR having this memseg. */
 		start = (uintptr_t)addr + i * msl->page_sz;
-		mr = mr_lookup_dev_list(dev, &entry, start);
+		mr = mlx5_mr_lookup_list(&sh->share_cache, &entry, start);
 		if (mr == NULL)
 			continue;
-		assert(mr->msl); /* Can't be external memory. */
+		MLX5_ASSERT(mr->msl); /* Can't be external memory. */
 		ms = rte_mem_virt2memseg((void *)start, msl);
-		assert(ms != NULL);
-		assert(msl->page_sz == ms->hugepage_sz);
+		MLX5_ASSERT(ms != NULL);
+		MLX5_ASSERT(msl->page_sz == ms->hugepage_sz);
 		ms_idx = rte_fbarray_find_idx(&msl->memseg_arr, ms);
 		pos = ms_idx - mr->ms_base_idx;
-		assert(rte_bitmap_get(mr->ms_bmp, pos));
-		assert(pos < mr->ms_bmp_n);
-		DEBUG("port %u MR(%p): clear bitmap[%u] for addr %p",
-		      dev->data->port_id, (void *)mr, pos, (void *)start);
+		MLX5_ASSERT(rte_bitmap_get(mr->ms_bmp, pos));
+		MLX5_ASSERT(pos < mr->ms_bmp_n);
+		DEBUG("device %s MR(%p): clear bitmap[%u] for addr %p",
+		      sh->ibdev_name, (void *)mr, pos, (void *)start);
 		rte_bitmap_clear(mr->ms_bmp, pos);
 		if (--mr->ms_n == 0) {
 			LIST_REMOVE(mr, mr);
-			LIST_INSERT_HEAD(&priv->mr.mr_free_list, mr, mr);
-			DEBUG("port %u remove MR(%p) from list",
-			      dev->data->port_id, (void *)mr);
+			LIST_INSERT_HEAD(&sh->share_cache.mr_free_list, mr, mr);
+			DEBUG("device %s remove MR(%p) from list",
+			      sh->ibdev_name, (void *)mr);
 		}
 		/*
 		 * MR is fragmented or will be freed. the global cache must be
@@ -855,7 +103,7 @@ mlx5_mr_mem_event_free_cb(struct rte_eth_dev *dev, const void *addr, size_t len)
 		rebuild = 1;
 	}
 	if (rebuild) {
-		mr_rebuild_dev_cache(dev);
+		mlx5_mr_rebuild_cache(&sh->share_cache);
 		/*
 		 * Flush local caches by propagating invalidation across cores.
 		 * rte_smp_wmb() is enough to synchronize this event. If one of
@@ -865,12 +113,12 @@ mlx5_mr_mem_event_free_cb(struct rte_eth_dev *dev, const void *addr, size_t len)
 		 * generation below) will be guaranteed to be seen by other core
 		 * before the core sees the newly allocated memory.
 		 */
-		++priv->mr.dev_gen;
+		++sh->share_cache.dev_gen;
 		DEBUG("broadcasting local cache flush, gen=%d",
-		      priv->mr.dev_gen);
+		      sh->share_cache.dev_gen);
 		rte_smp_wmb();
 	}
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
+	rte_rwlock_write_unlock(&sh->share_cache.rwlock);
 }
 
 /**
@@ -888,15 +136,17 @@ void
 mlx5_mr_mem_event_cb(enum rte_mem_event event_type, const void *addr,
 		     size_t len, void *arg __rte_unused)
 {
-	struct mlx5_priv *priv;
+	struct mlx5_dev_ctx_shared *sh;
 	struct mlx5_dev_list *dev_list = &mlx5_shared_data->mem_event_cb_list;
 
+	/* Must be called from the primary process. */
+	MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
 	switch (event_type) {
 	case RTE_MEM_EVENT_FREE:
 		rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
 		/* Iterate all the existing mlx5 devices. */
-		LIST_FOREACH(priv, dev_list, mem_event_cb)
-			mlx5_mr_mem_event_free_cb(ETH_DEV(priv), addr, len);
+		LIST_FOREACH(sh, dev_list, mem_event_cb)
+			mlx5_mr_mem_event_free_cb(sh, addr, len);
 		rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
 		break;
 	case RTE_MEM_EVENT_ALLOC:
@@ -905,110 +155,6 @@ mlx5_mr_mem_event_cb(enum rte_mem_event event_type, const void *addr,
 	}
 }
 
-/**
- * Look up address in the global MR cache table. If not found, create a new MR.
- * Insert the found/created entry to local bottom-half cache table.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param mr_ctrl
- *   Pointer to per-queue MR control structure.
- * @param[out] entry
- *   Pointer to returning MR cache entry, found in the global cache or newly
- *   created. If failed to create one, this is not written.
- * @param addr
- *   Search key.
- *
- * @return
- *   Searched LKey on success, UINT32_MAX on no match.
- */
-static uint32_t
-mlx5_mr_lookup_dev(struct rte_eth_dev *dev, struct mlx5_mr_ctrl *mr_ctrl,
-		   struct mlx5_mr_cache *entry, uintptr_t addr)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr_btree *bt = &mr_ctrl->cache_bh;
-	uint16_t idx;
-	uint32_t lkey;
-
-	/* If local cache table is full, try to double it. */
-	if (unlikely(bt->len == bt->size))
-		mr_btree_expand(bt, bt->size << 1);
-	/* Look up in the global cache. */
-	rte_rwlock_read_lock(&priv->mr.rwlock);
-	lkey = mr_btree_lookup(&priv->mr.cache, &idx, addr);
-	if (lkey != UINT32_MAX) {
-		/* Found. */
-		*entry = (*priv->mr.cache.table)[idx];
-		rte_rwlock_read_unlock(&priv->mr.rwlock);
-		/*
-		 * Update local cache. Even if it fails, return the found entry
-		 * to update top-half cache. Next time, this entry will be found
-		 * in the global cache.
-		 */
-		mr_btree_insert(bt, entry);
-		return lkey;
-	}
-	rte_rwlock_read_unlock(&priv->mr.rwlock);
-	/* First time to see the address? Create a new MR. */
-	lkey = mlx5_mr_create(dev, entry, addr);
-	/*
-	 * Update the local cache if successfully created a new global MR. Even
-	 * if failed to create one, there's no action to take in this datapath
-	 * code. As returning LKey is invalid, this will eventually make HW
-	 * fail.
-	 */
-	if (lkey != UINT32_MAX)
-		mr_btree_insert(bt, entry);
-	return lkey;
-}
-
-/**
- * Bottom-half of LKey search on datapath. Firstly search in cache_bh[] and if
- * misses, search in the global MR cache table and update the new entry to
- * per-queue local caches.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @param mr_ctrl
- *   Pointer to per-queue MR control structure.
- * @param addr
- *   Search key.
- *
- * @return
- *   Searched LKey on success, UINT32_MAX on no match.
- */
-static uint32_t
-mlx5_mr_addr2mr_bh(struct rte_eth_dev *dev, struct mlx5_mr_ctrl *mr_ctrl,
-		   uintptr_t addr)
-{
-	uint32_t lkey;
-	uint16_t bh_idx = 0;
-	/* Victim in top-half cache to replace with new entry. */
-	struct mlx5_mr_cache *repl = &mr_ctrl->cache[mr_ctrl->head];
-
-	/* Binary-search MR translation table. */
-	lkey = mr_btree_lookup(&mr_ctrl->cache_bh, &bh_idx, addr);
-	/* Update top-half cache. */
-	if (likely(lkey != UINT32_MAX)) {
-		*repl = (*mr_ctrl->cache_bh.table)[bh_idx];
-	} else {
-		/*
-		 * If missed in local lookup table, search in the global cache
-		 * and local cache_bh[] will be updated inside if possible.
-		 * Top-half cache entry will also be updated.
-		 */
-		lkey = mlx5_mr_lookup_dev(dev, mr_ctrl, repl, addr);
-		if (unlikely(lkey == UINT32_MAX))
-			return UINT32_MAX;
-	}
-	/* Update the most recently used entry. */
-	mr_ctrl->mru = mr_ctrl->head;
-	/* Point to the next victim, the oldest. */
-	mr_ctrl->head = (mr_ctrl->head + 1) % MLX5_MR_CACHE_N;
-	return lkey;
-}
-
 /**
  * Bottom-half of LKey search on Rx.
  *
@@ -1028,10 +174,9 @@ mlx5_rx_addr2mr_bh(struct mlx5_rxq_data *rxq, uintptr_t addr)
 	struct mlx5_mr_ctrl *mr_ctrl = &rxq->mr_ctrl;
 	struct mlx5_priv *priv = rxq_ctrl->priv;
 
-	DRV_LOG(DEBUG,
-		"Rx queue %u: miss on top-half, mru=%u, head=%u, addr=%p",
-		rxq_ctrl->idx, mr_ctrl->mru, mr_ctrl->head, (void *)addr);
-	return mlx5_mr_addr2mr_bh(ETH_DEV(priv), mr_ctrl, addr);
+	return mlx5_mr_addr2mr_bh(priv->sh->pd, &priv->mp_id,
+				  &priv->sh->share_cache, mr_ctrl, addr,
+				  priv->config.mr_ext_memseg_en);
 }
 
 /**
@@ -1053,10 +198,9 @@ mlx5_tx_addr2mr_bh(struct mlx5_txq_data *txq, uintptr_t addr)
 	struct mlx5_mr_ctrl *mr_ctrl = &txq->mr_ctrl;
 	struct mlx5_priv *priv = txq_ctrl->priv;
 
-	DRV_LOG(DEBUG,
-		"Tx queue %u: miss on top-half, mru=%u, head=%u, addr=%p",
-		txq_ctrl->idx, mr_ctrl->mru, mr_ctrl->head, (void *)addr);
-	return mlx5_mr_addr2mr_bh(ETH_DEV(priv), mr_ctrl, addr);
+	return mlx5_mr_addr2mr_bh(priv->sh->pd, &priv->mp_id,
+				  &priv->sh->share_cache, mr_ctrl, addr,
+				  priv->config.mr_ext_memseg_en);
 }
 
 /**
@@ -1085,29 +229,6 @@ mlx5_tx_mb2mr_bh(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
 	return lkey;
 }
 
-/**
- * Flush all of the local cache entries.
- *
- * @param mr_ctrl
- *   Pointer to per-queue MR control structure.
- */
-void
-mlx5_mr_flush_local_cache(struct mlx5_mr_ctrl *mr_ctrl)
-{
-	/* Reset the most-recently-used index. */
-	mr_ctrl->mru = 0;
-	/* Reset the linear search array. */
-	mr_ctrl->head = 0;
-	memset(mr_ctrl->cache, 0, sizeof(mr_ctrl->cache));
-	/* Reset the B-tree table. */
-	mr_ctrl->cache_bh.len = 1;
-	mr_ctrl->cache_bh.overflow = 0;
-	/* Update the generation number. */
-	mr_ctrl->cur_gen = *mr_ctrl->dev_gen_ptr;
-	DRV_LOG(DEBUG, "mr_ctrl(%p): flushed, cur_gen=%d",
-		(void *)mr_ctrl, mr_ctrl->cur_gen);
-}
-
 /**
  * Called during rte_mempool_mem_iter() by mlx5_mr_update_ext_mp().
  *
@@ -1129,61 +250,179 @@ mlx5_mr_update_ext_mp_cb(struct rte_mempool *mp, void *opaque,
 	struct mr_update_mp_data *data = opaque;
 	struct rte_eth_dev *dev = data->dev;
 	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_dev_ctx_shared *sh = priv->sh;
 	struct mlx5_mr_ctrl *mr_ctrl = data->mr_ctrl;
 	struct mlx5_mr *mr = NULL;
 	uintptr_t addr = (uintptr_t)memhdr->addr;
 	size_t len = memhdr->len;
-	struct mlx5_mr_cache entry;
+	struct mr_cache_entry entry;
 	uint32_t lkey;
 
+	MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
 	/* If already registered, it should return. */
-	rte_rwlock_read_lock(&priv->mr.rwlock);
-	lkey = mr_lookup_dev(dev, &entry, addr);
-	rte_rwlock_read_unlock(&priv->mr.rwlock);
+	rte_rwlock_read_lock(&sh->share_cache.rwlock);
+	lkey = mlx5_mr_lookup_cache(&sh->share_cache, &entry, addr);
+	rte_rwlock_read_unlock(&sh->share_cache.rwlock);
 	if (lkey != UINT32_MAX)
 		return;
-	mr = rte_zmalloc_socket(NULL,
-				RTE_ALIGN_CEIL(sizeof(*mr),
-					       RTE_CACHE_LINE_SIZE),
-				RTE_CACHE_LINE_SIZE, mp->socket_id);
-	if (mr == NULL) {
+	DRV_LOG(DEBUG, "port %u register MR for chunk #%d of mempool (%s)",
+		dev->data->port_id, mem_idx, mp->name);
+	mr = mlx5_create_mr_ext(sh->pd, addr, len, mp->socket_id,
+				sh->share_cache.reg_mr_cb);
+	if (!mr) {
 		DRV_LOG(WARNING,
-			"port %u unable to allocate memory for a new MR of"
+			"port %u unable to allocate a new MR of"
 			" mempool (%s).",
 			dev->data->port_id, mp->name);
 		data->ret = -1;
 		return;
 	}
-	DRV_LOG(DEBUG, "port %u register MR for chunk #%d of mempool (%s)",
-		dev->data->port_id, mem_idx, mp->name);
-	mr->ibv_mr = mlx5_glue->reg_mr(priv->pd, (void *)addr, len,
-				       IBV_ACCESS_LOCAL_WRITE);
-	if (mr->ibv_mr == NULL) {
+	rte_rwlock_write_lock(&sh->share_cache.rwlock);
+	LIST_INSERT_HEAD(&sh->share_cache.mr_list, mr, mr);
+	/* Insert to the global cache table. */
+	mlx5_mr_insert_cache(&sh->share_cache, mr);
+	rte_rwlock_write_unlock(&sh->share_cache.rwlock);
+	/* Insert to the local cache table */
+	mlx5_mr_addr2mr_bh(sh->pd, &priv->mp_id, &sh->share_cache,
+			   mr_ctrl, addr, priv->config.mr_ext_memseg_en);
+}
+
+/**
+ * Finds the first ethdev that match the pci device.
+ * The existence of multiple ethdev per pci device is only with representors.
+ * On such case, it is enough to get only one of the ports as they all share
+ * the same ibv context.
+ *
+ * @param pdev
+ *   Pointer to the PCI device.
+ *
+ * @return
+ *   Pointer to the ethdev if found, NULL otherwise.
+ */
+static struct rte_eth_dev *
+pci_dev_to_eth_dev(struct rte_pci_device *pdev)
+{
+	uint16_t port_id;
+
+	port_id = rte_eth_find_next_of(0, &pdev->device);
+	if (port_id == RTE_MAX_ETHPORTS)
+		return NULL;
+	return &rte_eth_devices[port_id];
+}
+
+/**
+ * DPDK callback to DMA map external memory to a PCI device.
+ *
+ * @param pdev
+ *   Pointer to the PCI device.
+ * @param addr
+ *   Starting virtual address of memory to be mapped.
+ * @param iova
+ *   Starting IOVA address of memory to be mapped.
+ * @param len
+ *   Length of memory segment being mapped.
+ *
+ * @return
+ *   0 on success, negative value on error.
+ */
+int
+mlx5_dma_map(struct rte_pci_device *pdev, void *addr,
+	     uint64_t iova __rte_unused, size_t len)
+{
+	struct rte_eth_dev *dev;
+	struct mlx5_mr *mr;
+	struct mlx5_priv *priv;
+	struct mlx5_dev_ctx_shared *sh;
+
+	dev = pci_dev_to_eth_dev(pdev);
+	if (!dev) {
+		DRV_LOG(WARNING, "unable to find matching ethdev "
+				 "to PCI device %p", (void *)pdev);
+		rte_errno = ENODEV;
+		return -1;
+	}
+	priv = dev->data->dev_private;
+	sh = priv->sh;
+	mr = mlx5_create_mr_ext(sh->pd, (uintptr_t)addr, len, SOCKET_ID_ANY,
+				sh->share_cache.reg_mr_cb);
+	if (!mr) {
 		DRV_LOG(WARNING,
-			"port %u fail to create a verbs MR for address (%p)",
-			dev->data->port_id, (void *)addr);
-		rte_free(mr);
-		data->ret = -1;
-		return;
+			"port %u unable to dma map", dev->data->port_id);
+		rte_errno = EINVAL;
+		return -1;
 	}
-	mr->msl = NULL; /* Mark it is external memory. */
-	mr->ms_bmp = NULL;
-	mr->ms_n = 1;
-	mr->ms_bmp_n = 1;
-	rte_rwlock_write_lock(&priv->mr.rwlock);
-	LIST_INSERT_HEAD(&priv->mr.mr_list, mr, mr);
-	DRV_LOG(DEBUG,
-		"port %u MR CREATED (%p) for external memory %p:\n"
-		"  [0x%" PRIxPTR ", 0x%" PRIxPTR "),"
-		" lkey=0x%x base_idx=%u ms_n=%u, ms_bmp_n=%u",
-		dev->data->port_id, (void *)mr, (void *)addr,
-		addr, addr + len, rte_cpu_to_be_32(mr->ibv_mr->lkey),
-		mr->ms_base_idx, mr->ms_n, mr->ms_bmp_n);
+	rte_rwlock_write_lock(&sh->share_cache.rwlock);
+	LIST_INSERT_HEAD(&sh->share_cache.mr_list, mr, mr);
 	/* Insert to the global cache table. */
-	mr_insert_dev_cache(dev, mr);
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
-	/* Insert to the local cache table */
-	mlx5_mr_addr2mr_bh(dev, mr_ctrl, addr);
+	mlx5_mr_insert_cache(&sh->share_cache, mr);
+	rte_rwlock_write_unlock(&sh->share_cache.rwlock);
+	return 0;
+}
+
+/**
+ * DPDK callback to DMA unmap external memory to a PCI device.
+ *
+ * @param pdev
+ *   Pointer to the PCI device.
+ * @param addr
+ *   Starting virtual address of memory to be unmapped.
+ * @param iova
+ *   Starting IOVA address of memory to be unmapped.
+ * @param len
+ *   Length of memory segment being unmapped.
+ *
+ * @return
+ *   0 on success, negative value on error.
+ */
+int
+mlx5_dma_unmap(struct rte_pci_device *pdev, void *addr,
+	       uint64_t iova __rte_unused, size_t len __rte_unused)
+{
+	struct rte_eth_dev *dev;
+	struct mlx5_priv *priv;
+	struct mlx5_dev_ctx_shared *sh;
+	struct mlx5_mr *mr;
+	struct mr_cache_entry entry;
+
+	dev = pci_dev_to_eth_dev(pdev);
+	if (!dev) {
+		DRV_LOG(WARNING, "unable to find matching ethdev "
+				 "to PCI device %p", (void *)pdev);
+		rte_errno = ENODEV;
+		return -1;
+	}
+	priv = dev->data->dev_private;
+	sh = priv->sh;
+	rte_rwlock_read_lock(&sh->share_cache.rwlock);
+	mr = mlx5_mr_lookup_list(&sh->share_cache, &entry, (uintptr_t)addr);
+	if (!mr) {
+		rte_rwlock_read_unlock(&sh->share_cache.rwlock);
+		DRV_LOG(WARNING, "address 0x%" PRIxPTR " wasn't registered "
+				 "to PCI device %p", (uintptr_t)addr,
+				 (void *)pdev);
+		rte_errno = EINVAL;
+		return -1;
+	}
+	LIST_REMOVE(mr, mr);
+	LIST_INSERT_HEAD(&sh->share_cache.mr_free_list, mr, mr);
+	DEBUG("port %u remove MR(%p) from list", dev->data->port_id,
+	      (void *)mr);
+	mlx5_mr_rebuild_cache(&sh->share_cache);
+	/*
+	 * Flush local caches by propagating invalidation across cores.
+	 * rte_smp_wmb() is enough to synchronize this event. If one of
+	 * freed memsegs is seen by other core, that means the memseg
+	 * has been allocated by allocator, which will come after this
+	 * free call. Therefore, this store instruction (incrementing
+	 * generation below) will be guaranteed to be seen by other core
+	 * before the core sees the newly allocated memory.
+	 */
+	++sh->share_cache.dev_gen;
+	DEBUG("broadcasting local cache flush, gen=%d",
+	      sh->share_cache.dev_gen);
+	rte_smp_wmb();
+	rte_rwlock_read_unlock(&sh->share_cache.rwlock);
+	return 0;
 }
 
 /**
@@ -1237,6 +476,15 @@ mlx5_tx_update_ext_mp(struct mlx5_txq_data *txq, uintptr_t addr,
 	struct mlx5_mr_ctrl *mr_ctrl = &txq->mr_ctrl;
 	struct mlx5_priv *priv = txq_ctrl->priv;
 
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+		DRV_LOG(WARNING,
+			"port %u using address (%p) from unregistered mempool"
+			" having externally allocated memory"
+			" in secondary process, please create mempool"
+			" prior to rte_eth_dev_start()",
+			PORT_ID(priv), (void *)addr);
+		return UINT32_MAX;
+	}
 	mlx5_mr_update_ext_mp(ETH_DEV(priv), mr_ctrl, mp);
 	return mlx5_tx_addr2mr_bh(txq, addr);
 }
@@ -1248,14 +496,19 @@ mlx5_mr_update_mp_cb(struct rte_mempool *mp __rte_unused, void *opaque,
 		     unsigned mem_idx __rte_unused)
 {
 	struct mr_update_mp_data *data = opaque;
+	struct rte_eth_dev *dev = data->dev;
+	struct mlx5_priv *priv = dev->data->dev_private;
+
 	uint32_t lkey;
 
 	/* Stop iteration if failed in the previous walk. */
 	if (data->ret < 0)
 		return;
 	/* Register address of the chunk and update local caches. */
-	lkey = mlx5_mr_addr2mr_bh(data->dev, data->mr_ctrl,
-				  (uintptr_t)memhdr->addr);
+	lkey = mlx5_mr_addr2mr_bh(priv->sh->pd, &priv->mp_id,
+				  &priv->sh->share_cache, data->mr_ctrl,
+				  (uintptr_t)memhdr->addr,
+				  priv->config.mr_ext_memseg_en);
 	if (lkey == UINT32_MAX)
 		data->ret = -1;
 }
@@ -1290,81 +543,3 @@ mlx5_mr_update_mp(struct rte_eth_dev *dev, struct mlx5_mr_ctrl *mr_ctrl,
 	}
 	return data.ret;
 }
-
-/**
- * Dump all the created MRs and the global cache entries.
- *
- * @param dev
- *   Pointer to Ethernet device.
- */
-void
-mlx5_mr_dump_dev(struct rte_eth_dev *dev __rte_unused)
-{
-#ifndef NDEBUG
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr *mr;
-	int mr_n = 0;
-	int chunk_n = 0;
-
-	rte_rwlock_read_lock(&priv->mr.rwlock);
-	/* Iterate all the existing MRs. */
-	LIST_FOREACH(mr, &priv->mr.mr_list, mr) {
-		unsigned int n;
-
-		DEBUG("port %u MR[%u], LKey = 0x%x, ms_n = %u, ms_bmp_n = %u",
-		      dev->data->port_id, mr_n++,
-		      rte_cpu_to_be_32(mr->ibv_mr->lkey),
-		      mr->ms_n, mr->ms_bmp_n);
-		if (mr->ms_n == 0)
-			continue;
-		for (n = 0; n < mr->ms_bmp_n; ) {
-			struct mlx5_mr_cache ret = { 0, };
-
-			n = mr_find_next_chunk(mr, &ret, n);
-			if (!ret.end)
-				break;
-			DEBUG("  chunk[%u], [0x%" PRIxPTR ", 0x%" PRIxPTR ")",
-			      chunk_n++, ret.start, ret.end);
-		}
-	}
-	DEBUG("port %u dumping global cache", dev->data->port_id);
-	mlx5_mr_btree_dump(&priv->mr.cache);
-	rte_rwlock_read_unlock(&priv->mr.rwlock);
-#endif
-}
-
-/**
- * Release all the created MRs and resources. Remove device from memory callback
- * list.
- *
- * @param dev
- *   Pointer to Ethernet device.
- */
-void
-mlx5_mr_release(struct rte_eth_dev *dev)
-{
-	struct mlx5_priv *priv = dev->data->dev_private;
-	struct mlx5_mr *mr_next = LIST_FIRST(&priv->mr.mr_list);
-
-	/* Remove from memory callback device list. */
-	rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
-	LIST_REMOVE(priv, mem_event_cb);
-	rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
-	if (rte_log_get_level(mlx5_logtype) == RTE_LOG_DEBUG)
-		mlx5_mr_dump_dev(dev);
-	rte_rwlock_write_lock(&priv->mr.rwlock);
-	/* Detach from MR list and move to free list. */
-	while (mr_next != NULL) {
-		struct mlx5_mr *mr = mr_next;
-
-		mr_next = LIST_NEXT(mr, mr);
-		LIST_REMOVE(mr, mr);
-		LIST_INSERT_HEAD(&priv->mr.mr_free_list, mr, mr);
-	}
-	LIST_INIT(&priv->mr.mr_list);
-	/* Free global cache. */
-	mlx5_mr_btree_free(&priv->mr.cache);
-	rte_rwlock_write_unlock(&priv->mr.rwlock);
-	/* Free all remaining MRs. */
-	mlx5_mr_garbage_collect(dev);
-}