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IB/cma: Set default gid type to RoCEv2

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RoCEv2 is the preferred RDMA protocol for Ethernet link layer because
of its advantages over RoCEv1. For better user experience make it the
default choice for RDMA_CM connections if device/port support it.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Moni Shoua 2017-05-30 09:47:34 +03:00 committed by Doug Ledford
parent 520eccdfe1
commit 63a5f483af
1 changed files with 7 additions and 2 deletions
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9
drivers/infiniband/core/cma.c
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@ -72,6 +72,7 @@ MODULE_LICENSE("Dual BSD/GPL");
#define CMA_MAX_CM_RETRIES 15
#define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24)
#define CMA_IBOE_PACKET_LIFETIME 18
#define CMA_PREFERRED_ROCE_GID_TYPE IB_GID_TYPE_ROCE_UDP_ENCAP
static const char * const cma_events[] = {
[RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved",
@ -4280,8 +4281,12 @@ static void cma_add_one(struct ib_device *device)
for (i = rdma_start_port(device); i <= rdma_end_port(device); i++) {
supported_gids = roce_gid_type_mask_support(device, i);
WARN_ON(!supported_gids);
cma_dev->default_gid_type[i - rdma_start_port(device)] =
find_first_bit(&supported_gids, BITS_PER_LONG);
if (supported_gids & CMA_PREFERRED_ROCE_GID_TYPE)
cma_dev->default_gid_type[i - rdma_start_port(device)] =
CMA_PREFERRED_ROCE_GID_TYPE;
else
cma_dev->default_gid_type[i - rdma_start_port(device)] =
find_first_bit(&supported_gids, BITS_PER_LONG);
cma_dev->default_roce_tos[i - rdma_start_port(device)] = 0;
}