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authorArtemy Kovalyov2017-08-17 15:52:07 +0300
committerDoug Ledford2017-08-29 08:30:18 -0400
commit38eb44fac71729fabdef71166e72bee5964c10d6 (patch)
tree5035c2cb1829d0f0c0b4d89839d2d3ef8ec7ceb8 /drivers/infiniband
parent9382d4e1d3c09fe20fa53eb12b51ef01ad40774f (diff)
IB/uverbs: Add new SRQ type IB_SRQT_TM
Add new SRQ type capable of new tag matching feature. When SRQ receives a message it will search through the matching list for the corresponding posted receive buffer. The process of searching the matching list is called tag matching. In case the tag matching results in a match, the received message will be placed in the address specified by the receive buffer. In case no match was found the message will be placed in a generic buffer until the corresponding receive buffer will be posted. These messages are called unexpected and their set is called an unexpected list. Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com> Reviewed-by: Yossi Itigin <yosefe@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 9f690af46a7e..e69038a07fa0 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1438,7 +1438,7 @@ static int create_qp(struct ib_uverbs_file *file,
if (cmd->is_srq) {
srq = uobj_get_obj_read(srq, cmd->srq_handle,
file->ucontext);
- if (!srq || srq->srq_type != IB_SRQT_BASIC) {
+ if (!srq || srq->srq_type == IB_SRQT_XRC) {
ret = -EINVAL;
goto err_put;
}
@@ -3481,6 +3481,9 @@ static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
if (IS_ERR(obj))
return PTR_ERR(obj);
+ if (cmd->srq_type == IB_SRQT_TM)
+ attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
+
if (cmd->srq_type == IB_SRQT_XRC) {
xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle,
file->ucontext);
@@ -3615,6 +3618,7 @@ ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
+ memset(&xcmd, 0, sizeof(xcmd));
xcmd.response = cmd.response;
xcmd.user_handle = cmd.user_handle;
xcmd.srq_type = IB_SRQT_BASIC;