From bd3920eac133103f0d4aa5fc62290e6df9a6c6da Mon Sep 17 00:00:00 2001 From: Maor Gottlieb Date: Thu, 30 Apr 2020 22:21:43 +0300 Subject: RDMA/core: Add LAG functionality Add support to get the RoCE LAG xmit slave by building skb of the RoCE packet and call to master_get_xmit_slave. If driver wants to get the slave assume all slaves are available, then need to set RDMA_LAG_FLAGS_HASH_ALL_SLAVES in flags. Link: https://lore.kernel.org/r/20200430192146.12863-14-maorg@mellanox.com Signed-off-by: Maor Gottlieb Reviewed-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- include/rdma/ib_verbs.h | 1 + include/rdma/lag.h | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 include/rdma/lag.h (limited to 'include/rdma') diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 20ea26810349..e6c18ec0365a 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2714,6 +2714,7 @@ struct ib_device { /* Used by iWarp CM */ char iw_ifname[IFNAMSIZ]; u32 iw_driver_flags; + u32 lag_flags; }; struct ib_client_nl_info; diff --git a/include/rdma/lag.h b/include/rdma/lag.h new file mode 100644 index 000000000000..7c06ec9b2eef --- /dev/null +++ b/include/rdma/lag.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* + * Copyright (c) 2020 Mellanox Technologies. All rights reserved. + */ + +#ifndef _RDMA_LAG_H_ +#define _RDMA_LAG_H_ + +#include + +struct ib_device; +struct rdma_ah_attr; + +enum rdma_lag_flags { + RDMA_LAG_FLAGS_HASH_ALL_SLAVES = 1 << 0 +}; + +void rdma_lag_put_ah_roce_slave(struct net_device *xmit_slave); +struct net_device *rdma_lag_get_ah_roce_slave(struct ib_device *device, + struct rdma_ah_attr *ah_attr, + gfp_t flags); + +#endif /* _RDMA_LAG_H_ */ -- cgit v1.2.3-59-g8ed1b