Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB: Increase DMA max_segment_size on Mellanox hardware
  IB/mad: Improve an error message so error code is included
  RDMA/nes: Don't print success message at level KERN_ERR
  RDMA/addr: Fix return of uninitialized ret value
  IB/srp: try to use larger FMR sizes to cover our mappings
  IB/srp: add support for indirect tables that don't fit in SRP_CMD
  IB/srp: rework mapping engine to use multiple FMR entries
  IB/srp: allow sg_tablesize to be set for each target
  IB/srp: move IB CM setup completion into its own function
  IB/srp: always avoid non-zero offsets into an FMR

drivers/infiniband/core/addr.c

@@ -204,7 +204,7 @@ static int addr4_resolve(struct sockaddr_in *src_in,
 
 	/* If the device does ARP internally, return 'done' */
 	if (rt->dst.dev->flags & IFF_NOARP) {
-		rdma_copy_addr(addr, rt->dst.dev, NULL);
+		ret = rdma_copy_addr(addr, rt->dst.dev, NULL);
 		goto put;
 	}
 

drivers/infiniband/core/agent.c

@@ -101,7 +101,8 @@ void agent_send_response(struct ib_mad *mad, struct ib_grh *grh,
 	agent = port_priv->agent[qpn];
 	ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num);
 	if (IS_ERR(ah)) {
-		printk(KERN_ERR SPFX "ib_create_ah_from_wc error\n");
+		printk(KERN_ERR SPFX "ib_create_ah_from_wc error %ld\n",
+			PTR_ERR(ah));
 		return;
 	}
 

drivers/infiniband/hw/mthca/mthca_main.c

@@ -1043,6 +1043,9 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
 		}
 	}
 
+	/* We can handle large RDMA requests, so allow larger segments. */
+	dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
+
 	mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev);
 	if (!mdev) {
 		dev_err(&pdev->dev, "Device struct alloc failed, "

drivers/infiniband/hw/nes/nes.c

@@ -694,7 +694,7 @@ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_i
 	nesdev->netdev_count++;
 	nesdev->nesadapter->netdev_count++;
 
-	printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
+	printk(KERN_INFO PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 			pci_name(pcidev));
 	return 0;
 

drivers/infiniband/ulp/srp/ib_srp.h

@@ -69,9 +69,13 @@ enum {
 	SRP_TAG_NO_REQ		= ~0U,
 	SRP_TAG_TSK_MGMT	= 1U << 31,
 
-	SRP_FMR_SIZE		= 256,
+	SRP_FMR_SIZE		= 512,
+	SRP_FMR_MIN_SIZE	= 128,
 	SRP_FMR_POOL_SIZE	= 1024,
-	SRP_FMR_DIRTY_SIZE	= SRP_FMR_POOL_SIZE / 4
+	SRP_FMR_DIRTY_SIZE	= SRP_FMR_POOL_SIZE / 4,
+
+	SRP_MAP_ALLOW_FMR	= 0,
+	SRP_MAP_NO_FMR		= 1,
 };
 
 enum srp_target_state {
@@ -93,9 +97,9 @@ struct srp_device {
 	struct ib_pd	       *pd;
 	struct ib_mr	       *mr;
 	struct ib_fmr_pool     *fmr_pool;
-	int			fmr_page_shift;
-	int			fmr_page_size;
 	u64			fmr_page_mask;
+	int			fmr_page_size;
+	int			fmr_max_size;
 };
 
 struct srp_host {
@@ -112,7 +116,11 @@ struct srp_request {
 	struct list_head	list;
 	struct scsi_cmnd       *scmnd;
 	struct srp_iu	       *cmd;
-	struct ib_pool_fmr     *fmr;
+	struct ib_pool_fmr    **fmr_list;
+	u64		       *map_page;
+	struct srp_direct_buf  *indirect_desc;
+	dma_addr_t		indirect_dma_addr;
+	short			nfmr;
 	short			index;
 };
 
@@ -130,6 +138,10 @@ struct srp_target_port {
 	u32			lkey;
 	u32			rkey;
 	enum srp_target_state	state;
+	unsigned int		max_iu_len;
+	unsigned int		cmd_sg_cnt;
+	unsigned int		indirect_size;
+	bool			allow_ext_sg;
 
 	/* Everything above this point is used in the hot path of
 	 * command processing. Try to keep them packed into cachelines.
@@ -144,6 +156,7 @@ struct srp_target_port {
 	struct Scsi_Host       *scsi_host;
 	char			target_name[32];
 	unsigned int		scsi_id;
+	unsigned int		sg_tablesize;
 
 	struct ib_sa_path_rec	path;
 	__be16			orig_dgid[8];
@@ -179,4 +192,19 @@ struct srp_iu {
 	enum dma_data_direction	direction;
 };
 
+struct srp_map_state {
+	struct ib_pool_fmr    **next_fmr;
+	struct srp_direct_buf  *desc;
+	u64		       *pages;
+	dma_addr_t		base_dma_addr;
+	u32			fmr_len;
+	u32			total_len;
+	unsigned int		npages;
+	unsigned int		nfmr;
+	unsigned int		ndesc;
+	struct scatterlist     *unmapped_sg;
+	int			unmapped_index;
+	dma_addr_t		unmapped_addr;
+};
+
 #endif /* IB_SRP_H */

drivers/net/mlx4/main.c

@@ -1109,6 +1109,9 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		}
 	}
 
+	/* Allow large DMA segments, up to the firmware limit of 1 GB */
+	dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
+
 	priv = kzalloc(sizeof *priv, GFP_KERNEL);
 	if (!priv) {
 		dev_err(&pdev->dev, "Device struct alloc failed, "