diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 13:42:26 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 13:42:26 -0800 |
commit | 009bd55dfcc857d8b00a5bbb17a8db060317af6f (patch) | |
tree | 3a623fc690ea03bd76630c5bcc003324136ae0f6 /net/rds/ib_cm.c | |
parent | 60f7c503d971a731ee3c4f884a9f2e80d476730d (diff) | |
parent | e246b7c035d74abfb3507fa10082d0c42cc016c3 (diff) |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"A smaller set of patches, nothing stands out as being particularly
major this cycle. The biggest item would be the new HIP09 HW support
from HNS, otherwise it was pretty quiet for new work here:
- Driver bug fixes and updates: bnxt_re, cxgb4, rxe, hns, i40iw,
cxgb4, mlx4 and mlx5
- Bug fixes and polishing for the new rts ULP
- Cleanup of uverbs checking for allowed driver operations
- Use sysfs_emit all over the place
- Lots of bug fixes and clarity improvements for hns
- hip09 support for hns
- NDR and 50/100Gb signaling rates
- Remove dma_virt_ops and go back to using the IB DMA wrappers
- mlx5 optimizations for contiguous DMA regions"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (147 commits)
RDMA/cma: Don't overwrite sgid_attr after device is released
RDMA/mlx5: Fix MR cache memory leak
RDMA/rxe: Use acquire/release for memory ordering
RDMA/hns: Simplify AEQE process for different types of queue
RDMA/hns: Fix inaccurate prints
RDMA/hns: Fix incorrect symbol types
RDMA/hns: Clear redundant variable initialization
RDMA/hns: Fix coding style issues
RDMA/hns: Remove unnecessary access right set during INIT2INIT
RDMA/hns: WARN_ON if get a reserved sl from users
RDMA/hns: Avoid filling sl in high 3 bits of vlan_id
RDMA/hns: Do shift on traffic class when using RoCEv2
RDMA/hns: Normalization the judgment of some features
RDMA/hns: Limit the length of data copied between kernel and userspace
RDMA/mlx4: Remove bogus dev_base_lock usage
RDMA/uverbs: Fix incorrect variable type
RDMA/core: Do not indicate device ready when device enablement fails
RDMA/core: Clean up cq pool mechanism
RDMA/core: Update kernel documentation for ib_create_named_qp()
MAINTAINERS: SOFT-ROCE: Change Zhu Yanjun's email address
...
Diffstat (limited to 'net/rds/ib_cm.c')
-rw-r--r-- | net/rds/ib_cm.c | 128 |
1 files changed, 78 insertions, 50 deletions
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index b36b60668b1d..f5cbe963cd8f 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -30,7 +30,6 @@ * SOFTWARE. * */ -#include <linux/dmapool.h> #include <linux/kernel.h> #include <linux/in.h> #include <linux/slab.h> @@ -441,42 +440,87 @@ static inline void ibdev_put_vector(struct rds_ib_device *rds_ibdev, int index) rds_ibdev->vector_load[index]--; } +static void rds_dma_hdr_free(struct ib_device *dev, struct rds_header *hdr, + dma_addr_t dma_addr, enum dma_data_direction dir) +{ + ib_dma_unmap_single(dev, dma_addr, sizeof(*hdr), dir); + kfree(hdr); +} + +static struct rds_header *rds_dma_hdr_alloc(struct ib_device *dev, + dma_addr_t *dma_addr, enum dma_data_direction dir) +{ + struct rds_header *hdr; + + hdr = kzalloc_node(sizeof(*hdr), GFP_KERNEL, ibdev_to_node(dev)); + if (!hdr) + return NULL; + + *dma_addr = ib_dma_map_single(dev, hdr, sizeof(*hdr), + DMA_BIDIRECTIONAL); + if (ib_dma_mapping_error(dev, *dma_addr)) { + kfree(hdr); + return NULL; + } + + return hdr; +} + +/* Free the DMA memory used to store struct rds_header. + * + * @dev: the RDS IB device + * @hdrs: pointer to the array storing DMA memory pointers + * @dma_addrs: pointer to the array storing DMA addresses + * @num_hdars: number of headers to free. + */ +static void rds_dma_hdrs_free(struct rds_ib_device *dev, + struct rds_header **hdrs, dma_addr_t *dma_addrs, u32 num_hdrs, + enum dma_data_direction dir) +{ + u32 i; + + for (i = 0; i < num_hdrs; i++) + rds_dma_hdr_free(dev->dev, hdrs[i], dma_addrs[i], dir); + kvfree(hdrs); + kvfree(dma_addrs); +} + + /* Allocate DMA coherent memory to be used to store struct rds_header for * sending/receiving packets. The pointers to the DMA memory and the * associated DMA addresses are stored in two arrays. * - * @ibdev: the IB device - * @pool: the DMA memory pool + * @dev: the RDS IB device * @dma_addrs: pointer to the array for storing DMA addresses * @num_hdrs: number of headers to allocate * * It returns the pointer to the array storing the DMA memory pointers. On * error, NULL pointer is returned. */ -struct rds_header **rds_dma_hdrs_alloc(struct ib_device *ibdev, - struct dma_pool *pool, - dma_addr_t **dma_addrs, u32 num_hdrs) +static struct rds_header **rds_dma_hdrs_alloc(struct rds_ib_device *dev, + dma_addr_t **dma_addrs, u32 num_hdrs, + enum dma_data_direction dir) { struct rds_header **hdrs; dma_addr_t *hdr_daddrs; u32 i; hdrs = kvmalloc_node(sizeof(*hdrs) * num_hdrs, GFP_KERNEL, - ibdev_to_node(ibdev)); + ibdev_to_node(dev->dev)); if (!hdrs) return NULL; hdr_daddrs = kvmalloc_node(sizeof(*hdr_daddrs) * num_hdrs, GFP_KERNEL, - ibdev_to_node(ibdev)); + ibdev_to_node(dev->dev)); if (!hdr_daddrs) { kvfree(hdrs); return NULL; } for (i = 0; i < num_hdrs; i++) { - hdrs[i] = dma_pool_zalloc(pool, GFP_KERNEL, &hdr_daddrs[i]); + hdrs[i] = rds_dma_hdr_alloc(dev->dev, &hdr_daddrs[i], dir); if (!hdrs[i]) { - rds_dma_hdrs_free(pool, hdrs, hdr_daddrs, i); + rds_dma_hdrs_free(dev, hdrs, hdr_daddrs, i, dir); return NULL; } } @@ -485,24 +529,6 @@ struct rds_header **rds_dma_hdrs_alloc(struct ib_device *ibdev, return hdrs; } -/* Free the DMA memory used to store struct rds_header. - * - * @pool: the DMA memory pool - * @hdrs: pointer to the array storing DMA memory pointers - * @dma_addrs: pointer to the array storing DMA addresses - * @num_hdars: number of headers to free. - */ -void rds_dma_hdrs_free(struct dma_pool *pool, struct rds_header **hdrs, - dma_addr_t *dma_addrs, u32 num_hdrs) -{ - u32 i; - - for (i = 0; i < num_hdrs; i++) - dma_pool_free(pool, hdrs[i], dma_addrs[i]); - kvfree(hdrs); - kvfree(dma_addrs); -} - /* * This needs to be very careful to not leave IS_ERR pointers around for * cleanup to trip over. @@ -516,7 +542,6 @@ static int rds_ib_setup_qp(struct rds_connection *conn) struct rds_ib_device *rds_ibdev; unsigned long max_wrs; int ret, fr_queue_space; - struct dma_pool *pool; /* * It's normal to see a null device if an incoming connection races @@ -612,25 +637,26 @@ static int rds_ib_setup_qp(struct rds_connection *conn) goto recv_cq_out; } - pool = rds_ibdev->rid_hdrs_pool; - ic->i_send_hdrs = rds_dma_hdrs_alloc(dev, pool, &ic->i_send_hdrs_dma, - ic->i_send_ring.w_nr); + ic->i_send_hdrs = rds_dma_hdrs_alloc(rds_ibdev, &ic->i_send_hdrs_dma, + ic->i_send_ring.w_nr, + DMA_TO_DEVICE); if (!ic->i_send_hdrs) { ret = -ENOMEM; rdsdebug("DMA send hdrs alloc failed\n"); goto qp_out; } - ic->i_recv_hdrs = rds_dma_hdrs_alloc(dev, pool, &ic->i_recv_hdrs_dma, - ic->i_recv_ring.w_nr); + ic->i_recv_hdrs = rds_dma_hdrs_alloc(rds_ibdev, &ic->i_recv_hdrs_dma, + ic->i_recv_ring.w_nr, + DMA_FROM_DEVICE); if (!ic->i_recv_hdrs) { ret = -ENOMEM; rdsdebug("DMA recv hdrs alloc failed\n"); goto send_hdrs_dma_out; } - ic->i_ack = dma_pool_zalloc(pool, GFP_KERNEL, - &ic->i_ack_dma); + ic->i_ack = rds_dma_hdr_alloc(rds_ibdev->dev, &ic->i_ack_dma, + DMA_TO_DEVICE); if (!ic->i_ack) { ret = -ENOMEM; rdsdebug("DMA ack header alloc failed\n"); @@ -666,18 +692,19 @@ sends_out: vfree(ic->i_sends); ack_dma_out: - dma_pool_free(pool, ic->i_ack, ic->i_ack_dma); + rds_dma_hdr_free(rds_ibdev->dev, ic->i_ack, ic->i_ack_dma, + DMA_TO_DEVICE); ic->i_ack = NULL; recv_hdrs_dma_out: - rds_dma_hdrs_free(pool, ic->i_recv_hdrs, ic->i_recv_hdrs_dma, - ic->i_recv_ring.w_nr); + rds_dma_hdrs_free(rds_ibdev, ic->i_recv_hdrs, ic->i_recv_hdrs_dma, + ic->i_recv_ring.w_nr, DMA_FROM_DEVICE); ic->i_recv_hdrs = NULL; ic->i_recv_hdrs_dma = NULL; send_hdrs_dma_out: - rds_dma_hdrs_free(pool, ic->i_send_hdrs, ic->i_send_hdrs_dma, - ic->i_send_ring.w_nr); + rds_dma_hdrs_free(rds_ibdev, ic->i_send_hdrs, ic->i_send_hdrs_dma, + ic->i_send_ring.w_nr, DMA_TO_DEVICE); ic->i_send_hdrs = NULL; ic->i_send_hdrs_dma = NULL; @@ -1110,29 +1137,30 @@ void rds_ib_conn_path_shutdown(struct rds_conn_path *cp) } if (ic->rds_ibdev) { - struct dma_pool *pool; - - pool = ic->rds_ibdev->rid_hdrs_pool; - /* then free the resources that ib callbacks use */ if (ic->i_send_hdrs) { - rds_dma_hdrs_free(pool, ic->i_send_hdrs, + rds_dma_hdrs_free(ic->rds_ibdev, + ic->i_send_hdrs, ic->i_send_hdrs_dma, - ic->i_send_ring.w_nr); + ic->i_send_ring.w_nr, + DMA_TO_DEVICE); ic->i_send_hdrs = NULL; ic->i_send_hdrs_dma = NULL; } if (ic->i_recv_hdrs) { - rds_dma_hdrs_free(pool, ic->i_recv_hdrs, + rds_dma_hdrs_free(ic->rds_ibdev, + ic->i_recv_hdrs, ic->i_recv_hdrs_dma, - ic->i_recv_ring.w_nr); + ic->i_recv_ring.w_nr, + DMA_FROM_DEVICE); ic->i_recv_hdrs = NULL; ic->i_recv_hdrs_dma = NULL; } if (ic->i_ack) { - dma_pool_free(pool, ic->i_ack, ic->i_ack_dma); + rds_dma_hdr_free(ic->rds_ibdev->dev, ic->i_ack, + ic->i_ack_dma, DMA_TO_DEVICE); ic->i_ack = NULL; } } else { |