git: c7f73a1588dc - main - ofed: mask seq_num identifier to occupy only 3 bytes

The branch main has been updated by erj:

URL: https://cgit.FreeBSD.org/src/commit/?id=c7f73a1588dc58db28100fcbc1d72a830b674b34

commit c7f73a1588dc58db28100fcbc1d72a830b674b34
Author:     Bartosz Sobczak <bartosz.sobczak@intel.com>
AuthorDate: 2023-08-22 23:07:11 +0000
Commit:     Eric Joyner <erj@FreeBSD.org>
CommitDate: 2023-08-22 23:09:13 +0000

    ofed: mask seq_num identifier to occupy only 3 bytes
    
    The seq_num among other things is used to assign rq_psn value, which is
    a 24-bit identifier.  When the seq_num is full 4-byte value, we are
    usually receiving: '_ib_modify_qp rq_psn overflow, masking to 24 bits'
    warning.
    
    This is burdensome for running rdma traffic with large number of
    connections, because the number of logs is growing fast.
    
    Signed-off-by: Bartosz Sobczak <bartosz.sobczak@intel.com>
    Signed-off-by: Eric Joyner <erj@FreeBSD.org>
    
    Reviewed by:    kib@, erj@
    MFC after:      3 days
    Sponsored by:   Intel Corporation
    Differential Revision:  https://reviews.freebsd.org/D41531
---
 sys/ofed/drivers/infiniband/core/ib_cma.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/ofed/drivers/infiniband/core/ib_cma.c b/sys/ofed/drivers/infiniband/core/ib_cma.c
index fe6e3282dbf9..44783cbf8362 100644
--- a/sys/ofed/drivers/infiniband/core/ib_cma.c
+++ b/sys/ofed/drivers/infiniband/core/ib_cma.c
@@ -787,6 +787,7 @@ struct rdma_cm_id *rdma_create_id(struct vnet *net,
 	INIT_LIST_HEAD(&id_priv->listen_list);
 	INIT_LIST_HEAD(&id_priv->mc_list);
 	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);
+	id_priv->seq_num &= 0x00ffffff;
 	id_priv->id.route.addr.dev_addr.net = net;
 
 	return &id_priv->id;