Imported Upstream version 16.07-rc1

Change-Id: I40a523e52f12e8496fdd69e902824b0226c303de
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

2 files changed, 144 insertions, 89 deletions

diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index d2f56927..efed953e 100644
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -48,6 +48,8 @@ CFLAGS += -O3
 CFLAGS += -std=gnu99 -Wall -Wextra
 CFLAGS += -g
 CFLAGS += -I.
+CFLAGS += -D_BSD_SOURCE
+CFLAGS += -D_DEFAULT_SOURCE
 CFLAGS += -D_XOPEN_SOURCE=600
 CFLAGS += $(WERROR_FLAGS)
 LDLIBS += -libverbs
@@ -98,7 +100,9 @@ ifndef V
 AUTOCONF_OUTPUT := >/dev/null
 endif
 
-mlx4_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh
+mlx4_autoconf.h.new: FORCE
+
+mlx4_autoconf.h.new: $(RTE_SDK)/scripts/auto-config-h.sh
 	$Q $(RM) -f -- '$@'
 	$Q sh -- '$<' '$@' \
 		RSS_SUPPORT \
@@ -118,9 +122,16 @@ mlx4_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh
 		enum IBV_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK \
 		$(AUTOCONF_OUTPUT)
 
+# Create mlx4_autoconf.h or update it in case it differs from the new one.
+
+mlx4_autoconf.h: mlx4_autoconf.h.new
+	$Q [ -f '$@' ] && \
+		cmp '$<' '$@' $(AUTOCONF_OUTPUT) || \
+		mv '$<' '$@'
+
 mlx4.o: mlx4_autoconf.h
 
 clean_mlx4: FORCE
-	$Q rm -f -- mlx4_autoconf.h
+	$Q rm -f -- mlx4_autoconf.h mlx4_autoconf.h.new
 
 clean: clean_mlx4
diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 4f21dbe2..f8ed42b8 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -54,7 +54,6 @@
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
-#include <linux/if.h>
 #include <linux/ethtool.h>
 #include <linux/sockios.h>
 #include <fcntl.h>
@@ -197,7 +196,6 @@ struct rxq {
 	unsigned int sp:1; /* Use scattered RX elements. */
 	unsigned int csum:1; /* Enable checksum offloading. */
 	unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
-	uint32_t mb_len; /* Length of a mp-issued mbuf. */
 	struct mlx4_rxq_stats stats; /* RX queue counters. */
 	unsigned int socket; /* CPU socket ID for allocations. */
 	struct ibv_exp_res_domain *rd; /* Resource Domain. */
@@ -659,7 +657,15 @@ priv_get_mtu(struct priv *priv, uint16_t *mtu)
 static int
 priv_set_mtu(struct priv *priv, uint16_t mtu)
 {
-	return priv_set_sysfs_ulong(priv, "mtu", mtu);
+	uint16_t new_mtu;
+
+	if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
+	    priv_get_mtu(priv, &new_mtu))
+		return -1;
+	if (new_mtu == mtu)
+		return 0;
+	errno = EINVAL;
+	return -1;
 }
 
 /**
@@ -998,7 +1004,7 @@ txq_alloc_elts(struct txq *txq, unsigned int elts_n)
 	}
 	mr_linear =
 		ibv_reg_mr(txq->priv->pd, elts_linear, sizeof(*elts_linear),
-			   (IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
+			   IBV_ACCESS_LOCAL_WRITE);
 	if (mr_linear == NULL) {
 		ERROR("%p: unable to configure MR, ibv_reg_mr() failed",
 		      (void *)txq);
@@ -1198,8 +1204,71 @@ txq_complete(struct txq *txq)
 	return 0;
 }
 
+struct mlx4_check_mempool_data {
+	int ret;
+	char *start;
+	char *end;
+};
+
+/* Called by mlx4_check_mempool() when iterating the memory chunks. */
+static void mlx4_check_mempool_cb(struct rte_mempool *mp,
+	void *opaque, struct rte_mempool_memhdr *memhdr,
+	unsigned mem_idx)
+{
+	struct mlx4_check_mempool_data *data = opaque;
+
+	(void)mp;
+	(void)mem_idx;
+
+	/* It already failed, skip the next chunks. */
+	if (data->ret != 0)
+		return;
+	/* It is the first chunk. */
+	if (data->start == NULL && data->end == NULL) {
+		data->start = memhdr->addr;
+		data->end = data->start + memhdr->len;
+		return;
+	}
+	if (data->end == memhdr->addr) {
+		data->end += memhdr->len;
+		return;
+	}
+	if (data->start == (char *)memhdr->addr + memhdr->len) {
+		data->start -= memhdr->len;
+		return;
+	}
+	/* Error, mempool is not virtually contigous. */
+	data->ret = -1;
+}
+
+/**
+ * Check if a mempool can be used: it must be virtually contiguous.
+ *
+ * @param[in] mp
+ *   Pointer to memory pool.
+ * @param[out] start
+ *   Pointer to the start address of the mempool virtual memory area
+ * @param[out] end
+ *   Pointer to the end address of the mempool virtual memory area
+ *
+ * @return
+ *   0 on success (mempool is virtually contiguous), -1 on error.
+ */
+static int mlx4_check_mempool(struct rte_mempool *mp, uintptr_t *start,
+	uintptr_t *end)
+{
+	struct mlx4_check_mempool_data data;
+
+	memset(&data, 0, sizeof(data));
+	rte_mempool_mem_iter(mp, mlx4_check_mempool_cb, &data);
+	*start = (uintptr_t)data.start;
+	*end = (uintptr_t)data.end;
+
+	return data.ret;
+}
+
 /* For best performance, this function should not be inlined. */
-static struct ibv_mr *mlx4_mp2mr(struct ibv_pd *, const struct rte_mempool *)
+static struct ibv_mr *mlx4_mp2mr(struct ibv_pd *, struct rte_mempool *)
 	__attribute__((noinline));
 
 /**
@@ -1214,15 +1283,21 @@ static struct ibv_mr *mlx4_mp2mr(struct ibv_pd *, const struct rte_mempool *)
  *   Memory region pointer, NULL in case of error.
  */
 static struct ibv_mr *
-mlx4_mp2mr(struct ibv_pd *pd, const struct rte_mempool *mp)
+mlx4_mp2mr(struct ibv_pd *pd, struct rte_mempool *mp)
 {
 	const struct rte_memseg *ms = rte_eal_get_physmem_layout();
-	uintptr_t start = mp->elt_va_start;
-	uintptr_t end = mp->elt_va_end;
+	uintptr_t start;
+	uintptr_t end;
 	unsigned int i;
 
+	if (mlx4_check_mempool(mp, &start, &end) != 0) {
+		ERROR("mempool %p: not virtually contiguous",
+			(void *)mp);
+		return NULL;
+	}
+
 	DEBUG("mempool %p area start=%p end=%p size=%zu",
-	      (const void *)mp, (void *)start, (void *)end,
+	      (void *)mp, (void *)start, (void *)end,
 	      (size_t)(end - start));
 	/* Round start and end to page boundary if found in memory segments. */
 	for (i = 0; (i < RTE_MAX_MEMSEG) && (ms[i].addr != NULL); ++i) {
@@ -1236,12 +1311,12 @@ mlx4_mp2mr(struct ibv_pd *pd, const struct rte_mempool *mp)
 			end = RTE_ALIGN_CEIL(end, align);
 	}
 	DEBUG("mempool %p using start=%p end=%p size=%zu for MR",
-	      (const void *)mp, (void *)start, (void *)end,
+	      (void *)mp, (void *)start, (void *)end,
 	      (size_t)(end - start));
 	return ibv_reg_mr(pd,
 			  (void *)start,
 			  end - start,
-			  IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE);
+			  IBV_ACCESS_LOCAL_WRITE);
 }
 
 /**
@@ -1276,7 +1351,7 @@ txq_mb2mp(struct rte_mbuf *buf)
  *   mr->lkey on success, (uint32_t)-1 on failure.
  */
 static uint32_t
-txq_mp2mr(struct txq *txq, const struct rte_mempool *mp)
+txq_mp2mr(struct txq *txq, struct rte_mempool *mp)
 {
 	unsigned int i;
 	struct ibv_mr *mr;
@@ -1294,7 +1369,7 @@ txq_mp2mr(struct txq *txq, const struct rte_mempool *mp)
 	}
 	/* Add a new entry, register MR first. */
 	DEBUG("%p: discovered new memory pool \"%s\" (%p)",
-	      (void *)txq, mp->name, (const void *)mp);
+	      (void *)txq, mp->name, (void *)mp);
 	mr = mlx4_mp2mr(txq->priv->pd, mp);
 	if (unlikely(mr == NULL)) {
 		DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
@@ -1315,12 +1390,11 @@ txq_mp2mr(struct txq *txq, const struct rte_mempool *mp)
 	txq->mp2mr[i].mr = mr;
 	txq->mp2mr[i].lkey = mr->lkey;
 	DEBUG("%p: new MR lkey for MP \"%s\" (%p): 0x%08" PRIu32,
-	      (void *)txq, mp->name, (const void *)mp, txq->mp2mr[i].lkey);
+	      (void *)txq, mp->name, (void *)mp, txq->mp2mr[i].lkey);
 	return txq->mp2mr[i].lkey;
 }
 
 struct txq_mp2mr_mbuf_check_data {
-	const struct rte_mempool *mp;
 	int ret;
 };
 
@@ -1328,34 +1402,26 @@ struct txq_mp2mr_mbuf_check_data {
  * Callback function for rte_mempool_obj_iter() to check whether a given
  * mempool object looks like a mbuf.
  *
- * @param[in, out] arg
- *   Context data (struct txq_mp2mr_mbuf_check_data). Contains mempool pointer
- *   and return value.
- * @param[in] start
- *   Object start address.
- * @param[in] end
- *   Object end address.
+ * @param[in] mp
+ *   The mempool pointer
+ * @param[in] arg
+ *   Context data (struct txq_mp2mr_mbuf_check_data). Contains the
+ *   return value.
+ * @param[in] obj
+ *   Object address.
  * @param index
- *   Unused.
- *
- * @return
- *   Nonzero value when object is not a mbuf.
+ *   Object index, unused.
  */
 static void
-txq_mp2mr_mbuf_check(void *arg, void *start, void *end,
-		     uint32_t index __rte_unused)
+txq_mp2mr_mbuf_check(struct rte_mempool *mp, void *arg, void *obj,
+	uint32_t index __rte_unused)
 {
 	struct txq_mp2mr_mbuf_check_data *data = arg;
-	struct rte_mbuf *buf =
-		(void *)((uintptr_t)start + data->mp->header_size);
+	struct rte_mbuf *buf = obj;
 
-	(void)index;
 	/* Check whether mbuf structure fits element size and whether mempool
 	 * pointer is valid. */
-	if (((uintptr_t)end >= (uintptr_t)(buf + 1)) &&
-	    (buf->pool == data->mp))
-		data->ret = 0;
-	else
+	if (sizeof(*buf) > mp->elt_size || buf->pool != mp)
 		data->ret = -1;
 }
 
@@ -1369,28 +1435,16 @@ txq_mp2mr_mbuf_check(void *arg, void *start, void *end,
  *   Pointer to TX queue structure.
  */
 static void
-txq_mp2mr_iter(const struct rte_mempool *mp, void *arg)
+txq_mp2mr_iter(struct rte_mempool *mp, void *arg)
 {
 	struct txq *txq = arg;
 	struct txq_mp2mr_mbuf_check_data data = {
-		.mp = mp,
-		.ret = -1,
+		.ret = 0,
 	};
 
-	/* Discard empty mempools. */
-	if (mp->size == 0)
-		return;
 	/* Register mempool only if the first element looks like a mbuf. */
-	rte_mempool_obj_iter((void *)mp->elt_va_start,
-			     1,
-			     mp->header_size + mp->elt_size + mp->trailer_size,
-			     1,
-			     mp->elt_pa,
-			     mp->pg_num,
-			     mp->pg_shift,
-			     txq_mp2mr_mbuf_check,
-			     &data);
-	if (data.ret)
+	if (rte_mempool_obj_iter(mp, txq_mp2mr_mbuf_check, &data) == 0 ||
+			data.ret == -1)
 		return;
 	txq_mp2mr(txq, mp);
 }
@@ -3075,7 +3129,7 @@ mlx4_rx_burst_sp(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 			 * cacheline while allocating rep.
 			 */
 			rte_prefetch0(seg);
-			rep = __rte_mbuf_raw_alloc(rxq->mp);
+			rep = rte_mbuf_raw_alloc(rxq->mp);
 			if (unlikely(rep == NULL)) {
 				/*
 				 * Unable to allocate a replacement mbuf,
@@ -3104,7 +3158,6 @@ mlx4_rx_burst_sp(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 			rep->ol_flags = -1;
 #endif
 			assert(rep->buf_len == seg->buf_len);
-			assert(rep->buf_len == rxq->mb_len);
 			/* Reconfigure sge to use rep instead of seg. */
 			assert(sge->lkey == rxq->mr->lkey);
 			sge->addr = ((uintptr_t)rep->buf_addr + seg_headroom);
@@ -3235,8 +3288,8 @@ mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 		 * Fetch initial bytes of packet descriptor into a
 		 * cacheline while allocating rep.
 		 */
-		rte_prefetch0(seg);
-		rte_prefetch0(&seg->cacheline1);
+		rte_mbuf_prefetch_part1(seg);
+		rte_mbuf_prefetch_part2(seg);
 		ret = rxq->if_cq->poll_length_flags(rxq->cq, NULL, NULL,
 						    &flags);
 		if (unlikely(ret < 0)) {
@@ -3274,7 +3327,7 @@ mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 		if (ret == 0)
 			break;
 		len = ret;
-		rep = __rte_mbuf_raw_alloc(rxq->mp);
+		rep = rte_mbuf_raw_alloc(rxq->mp);
 		if (unlikely(rep == NULL)) {
 			/*
 			 * Unable to allocate a replacement mbuf,
@@ -3525,6 +3578,7 @@ rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq)
 	unsigned int i, k;
 	struct ibv_exp_qp_attr mod;
 	struct ibv_recv_wr *bad_wr;
+	unsigned int mb_len;
 	int err;
 	int parent = (rxq == &priv->rxq_parent);
 
@@ -3533,6 +3587,7 @@ rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq)
 		      (void *)dev, (void *)rxq);
 		return EINVAL;
 	}
+	mb_len = rte_pktmbuf_data_room_size(rxq->mp);
 	DEBUG("%p: rehashing queue %p", (void *)dev, (void *)rxq);
 	/* Number of descriptors and mbufs currently allocated. */
 	desc_n = (tmpl.elts_n * (tmpl.sp ? MLX4_PMD_SGE_WR_N : 1));
@@ -3547,9 +3602,10 @@ rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq)
 		rxq->csum_l2tun = tmpl.csum_l2tun;
 	}
 	/* Enable scattered packets support for this queue if necessary. */
+	assert(mb_len >= RTE_PKTMBUF_HEADROOM);
 	if ((dev->data->dev_conf.rxmode.jumbo_frame) &&
 	    (dev->data->dev_conf.rxmode.max_rx_pkt_len >
-	     (tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) {
+	     (mb_len - RTE_PKTMBUF_HEADROOM))) {
 		tmpl.sp = 1;
 		desc_n /= MLX4_PMD_SGE_WR_N;
 	} else
@@ -3740,7 +3796,7 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
 	} attr;
 	enum ibv_exp_query_intf_status status;
 	struct ibv_recv_wr *bad_wr;
-	struct rte_mbuf *buf;
+	unsigned int mb_len;
 	int ret = 0;
 	int parent = (rxq == &priv->rxq_parent);
 
@@ -3756,31 +3812,22 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
 		desc = 1;
 		goto skip_mr;
 	}
+	mb_len = rte_pktmbuf_data_room_size(mp);
 	if ((desc == 0) || (desc % MLX4_PMD_SGE_WR_N)) {
 		ERROR("%p: invalid number of RX descriptors (must be a"
 		      " multiple of %d)", (void *)dev, MLX4_PMD_SGE_WR_N);
 		return EINVAL;
 	}
-	/* Get mbuf length. */
-	buf = rte_pktmbuf_alloc(mp);
-	if (buf == NULL) {
-		ERROR("%p: unable to allocate mbuf", (void *)dev);
-		return ENOMEM;
-	}
-	tmpl.mb_len = buf->buf_len;
-	assert((rte_pktmbuf_headroom(buf) +
-		rte_pktmbuf_tailroom(buf)) == tmpl.mb_len);
-	assert(rte_pktmbuf_headroom(buf) == RTE_PKTMBUF_HEADROOM);
-	rte_pktmbuf_free(buf);
 	/* Toggle RX checksum offload if hardware supports it. */
 	if (priv->hw_csum)
 		tmpl.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
 	if (priv->hw_csum_l2tun)
 		tmpl.csum_l2tun = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
 	/* Enable scattered packets support for this queue if necessary. */
+	assert(mb_len >= RTE_PKTMBUF_HEADROOM);
 	if ((dev->data->dev_conf.rxmode.jumbo_frame) &&
 	    (dev->data->dev_conf.rxmode.max_rx_pkt_len >
-	     (tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) {
+	     (mb_len - RTE_PKTMBUF_HEADROOM))) {
 		tmpl.sp = 1;
 		desc /= MLX4_PMD_SGE_WR_N;
 	}
@@ -4723,7 +4770,7 @@ mlx4_link_update_unlocked(struct rte_eth_dev *dev, int wait_to_complete)
 	memset(&dev_link, 0, sizeof(dev_link));
 	dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 				(ifr.ifr_flags & IFF_RUNNING));
-	ifr.ifr_data = &edata;
+	ifr.ifr_data = (void *)&edata;
 	if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 		WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 		     strerror(errno));
@@ -4817,6 +4864,7 @@ mlx4_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 	/* Reconfigure each RX queue. */
 	for (i = 0; (i != priv->rxqs_n); ++i) {
 		struct rxq *rxq = (*priv->rxqs)[i];
+		unsigned int mb_len;
 		unsigned int max_frame_len;
 		int sp;
 
@@ -4826,7 +4874,9 @@ mlx4_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 		 * toggle scattered support (sp) if necessary. */
 		max_frame_len = (priv->mtu + ETHER_HDR_LEN +
 				 (ETHER_MAX_VLAN_FRAME_LEN - ETHER_MAX_LEN));
-		sp = (max_frame_len > (rxq->mb_len - RTE_PKTMBUF_HEADROOM));
+		mb_len = rte_pktmbuf_data_room_size(rxq->mp);
+		assert(mb_len >= RTE_PKTMBUF_HEADROOM);
+		sp = (max_frame_len > (mb_len - RTE_PKTMBUF_HEADROOM));
 		/* Provide new values to rxq_setup(). */
 		dev->data->dev_conf.rxmode.jumbo_frame = sp;
 		dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
@@ -4882,7 +4932,7 @@ mlx4_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 
 	if (mlx4_is_secondary())
 		return -E_RTE_SECONDARY;
-	ifr.ifr_data = &ethpause;
+	ifr.ifr_data = (void *)&ethpause;
 	priv_lock(priv);
 	if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 		ret = errno;
@@ -4932,7 +4982,7 @@ mlx4_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 
 	if (mlx4_is_secondary())
 		return -E_RTE_SECONDARY;
-	ifr.ifr_data = &ethpause;
+	ifr.ifr_data = (void *)&ethpause;
 	ethpause.autoneg = fc_conf->autoneg;
 	if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 	    (fc_conf->mode & RTE_FC_RX_PAUSE))
@@ -5358,7 +5408,7 @@ priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
 		rte_eal_alarm_cancel(mlx4_dev_link_status_handler, dev);
 	priv->pending_alarm = 0;
 	priv->intr_handle.fd = 0;
-	priv->intr_handle.type = 0;
+	priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
 }
 
 /**
@@ -5757,22 +5807,16 @@ error:
 
 static const struct rte_pci_id mlx4_pci_id_map[] = {
 	{
-		.vendor_id = PCI_VENDOR_ID_MELLANOX,
-		.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3,
-		.subsystem_vendor_id = PCI_ANY_ID,
-		.subsystem_device_id = PCI_ANY_ID
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+			       PCI_DEVICE_ID_MELLANOX_CONNECTX3)
 	},
 	{
-		.vendor_id = PCI_VENDOR_ID_MELLANOX,
-		.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO,
-		.subsystem_vendor_id = PCI_ANY_ID,
-		.subsystem_device_id = PCI_ANY_ID
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+			       PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO)
 	},
 	{
-		.vendor_id = PCI_VENDOR_ID_MELLANOX,
-		.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3VF,
-		.subsystem_vendor_id = PCI_ANY_ID,
-		.subsystem_device_id = PCI_ANY_ID
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+			       PCI_DEVICE_ID_MELLANOX_CONNECTX3VF)
 	},
 	{
 		.vendor_id = 0