diff options
| author | Bob Pearson <rpearsonhpe@gmail.com> | 2023-05-30 17:13:35 -0500 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-06-09 13:18:53 -0300 |
| commit | 544c7f62cf32db2bd358f1e8a40a98bf98fa2a5c (patch) | |
| tree | 6ff5d2fe548dd51eaeadf7f816747c4672369fdd /drivers/infiniband/sw | |
| parent | 86a3fb55bc4fb2ea0c276d56f03335574a694ee4 (diff) | |
RDMA/rxe: Implement rereg_user_mr
Implement the two easy cases of ib_rereg_user_mr.
Link: https://lore.kernel.org/r/20230530221334.89432-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/sw')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.c | 35 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.h | 5 |
2 files changed, 40 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index bb2b9d40e242..f6396333bcef 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -1299,6 +1299,40 @@ err_free: return ERR_PTR(err); } +static struct ib_mr *rxe_rereg_user_mr(struct ib_mr *ibmr, int flags, + u64 start, u64 length, u64 iova, + int access, struct ib_pd *ibpd, + struct ib_udata *udata) +{ + struct rxe_mr *mr = to_rmr(ibmr); + struct rxe_pd *old_pd = to_rpd(ibmr->pd); + struct rxe_pd *pd = to_rpd(ibpd); + + /* for now only support the two easy cases: + * rereg_pd and rereg_access + */ + if (flags & ~RXE_MR_REREG_SUPPORTED) { + rxe_err_mr(mr, "flags = %#x not supported", flags); + return ERR_PTR(-EOPNOTSUPP); + } + + if (flags & IB_MR_REREG_PD) { + rxe_put(old_pd); + rxe_get(pd); + mr->ibmr.pd = ibpd; + } + + if (flags & IB_MR_REREG_ACCESS) { + if (access & ~RXE_ACCESS_SUPPORTED_MR) { + rxe_err_mr(mr, "access = %#x not supported", access); + return ERR_PTR(-EOPNOTSUPP); + } + mr->access = access; + } + + return NULL; +} + static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type, u32 max_num_sg) { @@ -1451,6 +1485,7 @@ static const struct ib_device_ops rxe_dev_ops = { .query_srq = rxe_query_srq, .reg_user_mr = rxe_reg_user_mr, .req_notify_cq = rxe_req_notify_cq, + .rereg_user_mr = rxe_rereg_user_mr, .resize_cq = rxe_resize_cq, INIT_RDMA_OBJ_SIZE(ib_ah, rxe_ah, ibah), diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index 2f2dc67f03dd..cb18b83b73c1 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -284,6 +284,11 @@ enum rxe_mr_lookup_type { RXE_LOOKUP_REMOTE, }; +enum rxe_rereg { + RXE_MR_REREG_SUPPORTED = IB_MR_REREG_PD + | IB_MR_REREG_ACCESS, +}; + static inline int rkey_is_mw(u32 rkey) { u32 index = rkey >> 8; |