From: Leon Romanovsky <leonro@xxxxxxxxxxxx> Hi, This series comes from Parav and Jason who worked jointly to address feedback on v0. The code and patches are restructed to simplify review and maintenance. Thanks --------------------------------------------------- >From Jason and Parav, Currently a GID entry can be deleted from the GID table while it is in use by ULPs, CM modules, drivers, or user space applications. It may even get replaced with new attributes and/or GID value which may lead to undesired traffic in the network. The previous and new GID entry might be in two different net namespace; this may lead to send traffic to undesired namespace. GID entry reference count is based on standard kref structure. The GID table entries are re-organized so they are written once before being added to the table, and then never changed during the lifetime of the entry. For IB port GID table entry location is decided by the HCA provider driver. Which means that when GID table entries are in use by the users of it, ib_cache_update() can overwrite the GID entry and attributes for IB link layer. Therefore, when an entry is deleted/added (RoCE) or replaced (IB) new memory is allocated to replace the old entry and the old entry lives on via a kref until all users finally drop it. This series also introduces GID entry get, put and hold APIs. It also uses them in ib_core and smc modules. Additionally it introduces pointer returning variants of the query API, with the expectation that all callers will be converted to use them and the copy returning functions will be deleted. Thanks Jason Gunthorpe (2): IB/core: Provide rdma_ versions of the gid cache API IB/core: Make rdma_find_gid_by_filter support all protocols Parav Pandit (9): IB/core: Do not set the gid type when reserving default entries IB/core: Store default GID property per-table instead of per-entry IB/core: Introduce GID entry reference counts RDMA: Use GID from the ib_gid_attr during the add_gid() callback IB/core: Introduce GID attribute get, put and hold APIs IB/core: Replace ib_query_gid with rdma_get_gid_attr net/smc: Replace ib_query_gid with rdma_get_gid_attr IB: Replace ib_query_gid/ib_get_cached_gid with rdma_query_gid IB/rxe: Use rdma GID API drivers/infiniband/core/cache.c | 716 +++++++++++++++++-------- drivers/infiniband/core/cm.c | 9 +- drivers/infiniband/core/cma.c | 6 +- drivers/infiniband/core/device.c | 21 +- drivers/infiniband/core/mad.c | 4 +- drivers/infiniband/core/sysfs.c | 66 ++- drivers/infiniband/core/verbs.c | 6 +- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 5 +- drivers/infiniband/hw/bnxt_re/ib_verbs.h | 3 +- drivers/infiniband/hw/hns/hns_roce_device.h | 2 +- drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 2 +- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +- drivers/infiniband/hw/hns/hns_roce_main.c | 6 +- drivers/infiniband/hw/mlx4/main.c | 12 +- drivers/infiniband/hw/mlx5/main.c | 5 +- drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 10 +- drivers/infiniband/sw/rxe/rxe_net.c | 50 +- drivers/infiniband/sw/rxe/rxe_recv.c | 12 +- drivers/infiniband/ulp/ipoib/ipoib_ib.c | 3 +- drivers/infiniband/ulp/ipoib/ipoib_main.c | 4 +- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- drivers/infiniband/ulp/srpt/ib_srpt.c | 3 +- include/rdma/ib_cache.h | 21 + include/rdma/ib_verbs.h | 8 +- net/smc/smc_core.c | 20 +- net/smc/smc_ib.c | 25 +- 26 files changed, 626 insertions(+), 397 deletions(-) -- 2.14.3 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
