From aeb76df46d1158d5f7f3d30f993a1bb6ee9c67a0 Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Mon, 31 Oct 2016 07:50:56 +0200 Subject: [PATCH] IB/core: Set routable RoCE gid type for ipv4/ipv6 networks On Thu, Oct 27, 2016 at 04:36:28PM +0300, Leon Romanovsky wrote: > From: Mark Bloch > > If the underlying netowrk type is ipv4 or ipv6 and the device supports > routable RoCE, prefer it so the traffic could cross subnets. > > Signed-off-by: Mark Bloch > Signed-off-by: Maor Gottlieb > Signed-off-by: Leon Romanovsky > --- Hi Doug, Please take the following v1 of this patch where I fixed spelling error from "netowrk" to be "network". Thanks. >From 09f96ba3e9b4442cfb44dca04c6726e55525c9c3 Mon Sep 17 00:00:00 2001 From: Mark Bloch Date: Sun, 11 Sep 2016 06:25:10 +0000 Subject: [PATCH rdma-rc v1 3/6] IB/core: Set routable RoCE gid type for ipv4/ipv6 networks If the underlying network type is ipv4 or ipv6 and the device supports routable RoCE, prefer it so the traffic could cross subnets. Signed-off-by: Mark Bloch Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford --- drivers/infiniband/core/cma.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 36bf50ebb187..9ca0da0a37c4 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2436,6 +2436,18 @@ static int iboe_tos_to_sl(struct net_device *ndev, int tos) return 0; } +static enum ib_gid_type cma_route_gid_type(enum rdma_network_type network_type, + unsigned long supported_gids, + enum ib_gid_type default_gid) +{ + if ((network_type == RDMA_NETWORK_IPV4 || + network_type == RDMA_NETWORK_IPV6) && + test_bit(IB_GID_TYPE_ROCE_UDP_ENCAP, &supported_gids)) + return IB_GID_TYPE_ROCE_UDP_ENCAP; + + return default_gid; +} + static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) { struct rdma_route *route = &id_priv->id.route; @@ -2461,6 +2473,8 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) route->num_paths = 1; if (addr->dev_addr.bound_dev_if) { + unsigned long supported_gids; + ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); if (!ndev) { ret = -ENODEV; @@ -2484,7 +2498,12 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) route->path_rec->net = &init_net; route->path_rec->ifindex = ndev->ifindex; - route->path_rec->gid_type = id_priv->gid_type; + supported_gids = roce_gid_type_mask_support(id_priv->id.device, + id_priv->id.port_num); + route->path_rec->gid_type = + cma_route_gid_type(addr->dev_addr.network, + supported_gids, + id_priv->gid_type); } if (!ndev) { ret = -ENODEV; -- 2.30.2