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authorMaor Gottlieb <maorg@mellanox.com>2020-04-30 22:21:43 +0300
committerJason Gunthorpe <jgg@mellanox.com>2020-05-03 02:19:54 +0300
commitbd3920eac133103f0d4aa5fc62290e6df9a6c6da (patch)
tree38860e6b30e1d75cfe4551d6a193ab975ea5e7ec /include/rdma
parentfa5d010c5630b143b802e0477e87bba0656829cf (diff)
downloadlinux-bd3920eac133103f0d4aa5fc62290e6df9a6c6da.tar.xz
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 <maorg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_verbs.h1
-rw-r--r--include/rdma/lag.h23
2 files changed, 24 insertions, 0 deletions
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 <net/lag.h>
+
+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_ */