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| author | Leon Romanovsky <leonro@mellanox.com> | 2020-05-26 13:33:03 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-05-27 16:05:05 -0300 |
| commit | 0cb15372a615a9835893f43e86ae45399eb63996 (patch) | |
| tree | fb938b78d738f01f79189eb75496696a1039ffa7 /drivers/infiniband/core/ucma.c | |
| parent | a20652e175f2c5cea74c90503eeaeafabd08abed (diff) | |
| download | linux-0cb15372a615a9835893f43e86ae45399eb63996.tar.gz linux-0cb15372a615a9835893f43e86ae45399eb63996.tar.bz2 linux-0cb15372a615a9835893f43e86ae45399eb63996.zip | |
RDMA/cma: Connect ECE to rdma_accept
The rdma_accept() is called by both passive and active sides of CMID
connection to mark readiness to start data transfer. For passive side,
this is called explicitly, for active side, it is called implicitly while
receiving REP message.
Provide ECE data to rdma_accept function needed for passive side to send
that REP message.
Link: https://lore.kernel.org/r/20200526103304.196371-6-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 3e5268cfa164..6b27b210b890 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1135,28 +1135,36 @@ static ssize_t ucma_accept(struct ucma_file *file, const char __user *inbuf, { struct rdma_ucm_accept cmd; struct rdma_conn_param conn_param; + struct rdma_ucm_ece ece = {}; 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; ctx = ucma_get_ctx_dev(file, cmd.id); if (IS_ERR(ctx)) return PTR_ERR(ctx); + if (offsetofend(typeof(cmd), ece) <= in_size) { + ece.vendor_id = cmd.ece.vendor_id; + ece.attr_mod = cmd.ece.attr_mod; + } + if (cmd.conn_param.valid) { ucma_copy_conn_param(ctx->cm_id, &conn_param, &cmd.conn_param); mutex_lock(&file->mut); mutex_lock(&ctx->mutex); - ret = __rdma_accept(ctx->cm_id, &conn_param, NULL); + ret = __rdma_accept_ece(ctx->cm_id, &conn_param, NULL, &ece); mutex_unlock(&ctx->mutex); if (!ret) ctx->uid = cmd.uid; mutex_unlock(&file->mut); } else { mutex_lock(&ctx->mutex); - ret = __rdma_accept(ctx->cm_id, NULL, NULL); + ret = __rdma_accept_ece(ctx->cm_id, NULL, NULL, &ece); mutex_unlock(&ctx->mutex); } ucma_put_ctx(ctx); |