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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-09 09:02:46 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-09 09:02:46 -0700 |
commit | dce45af5c2e9e85f22578f2f8065f225f5d11764 (patch) | |
tree | e01e7a294586c3074142fb485516ce718a1a82d2 /net/smc | |
parent | 055128ee008b00fba14e3638e7e84fc2cff8d77d (diff) | |
parent | b79656ed44c6865e17bcd93472ec39488bcc4984 (diff) | |
download | blackbird-op-linux-dce45af5c2e9e85f22578f2f8065f225f5d11764.tar.gz blackbird-op-linux-dce45af5c2e9e85f22578f2f8065f225f5d11764.zip |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a smaller cycle than normal. One new driver was
accepted, which is unusual, and at least one more driver remains in
review on the list.
Summary:
- Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4,
vmw_pvrdma
- Many patches from MatthewW converting radix tree and IDR users to
use xarray
- Introduction of tracepoints to the MAD layer
- Build large SGLs at the start for DMA mapping and get the driver to
split them
- Generally clean SGL handling code throughout the subsystem
- Support for restricting RDMA devices to net namespaces for
containers
- Progress to remove object allocation boilerplate code from drivers
- Change in how the mlx5 driver shows representor ports linked to VFs
- mlx5 uapi feature to access the on chip SW ICM memory
- Add a new driver for 'EFA'. This is HW that supports user space
packet processing through QPs in Amazon's cloud"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits)
RDMA/ipoib: Allow user space differentiate between valid dev_port
IB/core, ipoib: Do not overreact to SM LID change event
RDMA/device: Don't fire uevent before device is fully initialized
lib/scatterlist: Remove leftover from sg_page_iter comment
RDMA/efa: Add driver to Kconfig/Makefile
RDMA/efa: Add the efa module
RDMA/efa: Add EFA verbs implementation
RDMA/efa: Add common command handlers
RDMA/efa: Implement functions that submit and complete admin commands
RDMA/efa: Add the ABI definitions
RDMA/efa: Add the com service API definitions
RDMA/efa: Add the efa_com.h file
RDMA/efa: Add the efa.h header file
RDMA/efa: Add EFA device definitions
RDMA: Add EFA related definitions
RDMA/umem: Remove hugetlb flag
RDMA/bnxt_re: Use core helpers to get aligned DMA address
RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size
RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks
RDMA/umem: Add API to find best driver supported page size in an MR
...
Diffstat (limited to 'net/smc')
-rw-r--r-- | net/smc/smc_ib.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c index 53f429c04843..d14ca4af6f94 100644 --- a/net/smc/smc_ib.c +++ b/net/smc/smc_ib.c @@ -146,18 +146,13 @@ out: static int smc_ib_fill_mac(struct smc_ib_device *smcibdev, u8 ibport) { const struct ib_gid_attr *attr; - int rc = 0; + int rc; attr = rdma_get_gid_attr(smcibdev->ibdev, ibport, 0); if (IS_ERR(attr)) return -ENODEV; - if (attr->ndev) - memcpy(smcibdev->mac[ibport - 1], attr->ndev->dev_addr, - ETH_ALEN); - else - rc = -ENODEV; - + rc = rdma_read_gid_l2_fields(attr, NULL, smcibdev->mac[ibport - 1]); rdma_put_gid_attr(attr); return rc; } @@ -185,6 +180,7 @@ int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport, unsigned short vlan_id, u8 gid[], u8 *sgid_index) { const struct ib_gid_attr *attr; + const struct net_device *ndev; int i; for (i = 0; i < smcibdev->pattr[ibport - 1].gid_tbl_len; i++) { @@ -192,11 +188,14 @@ int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport, if (IS_ERR(attr)) continue; - if (attr->ndev && + rcu_read_lock(); + ndev = rdma_read_gid_attr_ndev_rcu(attr); + if (!IS_ERR(ndev) && ((!vlan_id && !is_vlan_dev(attr->ndev)) || (vlan_id && is_vlan_dev(attr->ndev) && vlan_dev_vlan_id(attr->ndev) == vlan_id)) && attr->gid_type == IB_GID_TYPE_ROCE) { + rcu_read_unlock(); if (gid) memcpy(gid, &attr->gid, SMC_GID_SIZE); if (sgid_index) @@ -204,6 +203,7 @@ int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport, rdma_put_gid_attr(attr); return 0; } + rcu_read_unlock(); rdma_put_gid_attr(attr); } return -ENODEV; |