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| author |   Leon Romanovsky <leonro@mellanox.com> | 2020-05-26 13:33:00 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-05-27 16:05:05 -0300 |
| commit | 34e2ab57a911f8b32b22580d11a02f0b79108245 (patch) | |
| tree | 4edacb38f573973f1d95ba488eec7bd7ebe2845d /drivers/infiniband/core/ucma.c | |
| parent | RDMA/cm: Add Enhanced Connection Establishment (ECE) bits (diff) | |
| download | linux-dev-34e2ab57a911f8b32b22580d11a02f0b79108245.tar.xz linux-dev-34e2ab57a911f8b32b22580d11a02f0b79108245.zip | |
RDMA/ucma: Extend ucma_connect to receive ECE parameters
Active side of CMID initiates connection through librdmacm's
rdma_connect() and kernel's ucma_connect(). Extend UCMA interface to
handle those new parameters.
Link: https://lore.kernel.org/r/20200526103304.196371-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/ucma.c')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 06127c800a49..7cbb63690241 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1072,12 +1072,15 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id, static ssize_t ucma_connect(struct ucma_file *file, const char __user *inbuf, int in_len, int out_len) { - struct rdma_ucm_connect cmd; struct rdma_conn_param conn_param; + struct rdma_ucm_ece ece = {}; + struct rdma_ucm_connect cmd; struct ucma_context *ctx; + size_t in_size; int ret; - if (copy_from_user(&cmd, inbuf, sizeof(cmd))) + in_size = min_t(size_t, in_len, sizeof(cmd)); + if (copy_from_user(&cmd, inbuf, in_size)) return -EFAULT; if (!cmd.conn_param.valid) @@ -1088,8 +1091,13 @@ static ssize_t ucma_connect(struct ucma_file *file, const char __user *inbuf, return PTR_ERR(ctx); ucma_copy_conn_param(ctx->cm_id, &conn_param, &cmd.conn_param); + if (offsetofend(typeof(cmd), ece) <= in_size) { + ece.vendor_id = cmd.ece.vendor_id; + ece.attr_mod = cmd.ece.attr_mod; + } + mutex_lock(&ctx->mutex); - ret = rdma_connect(ctx->cm_id, &conn_param); + ret = rdma_connect_ece(ctx->cm_id, &conn_param, &ece); mutex_unlock(&ctx->mutex); ucma_put_ctx(ctx); return ret; |