From 38eb44fac71729fabdef71166e72bee5964c10d6 Mon Sep 17 00:00:00 2001 From: Artemy Kovalyov Date: Thu, 17 Aug 2017 15:52:07 +0300 Subject: [PATCH] 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 Reviewed-by: Yossi Itigin Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford --- drivers/infiniband/core/uverbs_cmd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 9f690af..e69038a 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; -- 2.7.4