From: Mark Zhang markzhang@nvidia.com
[ Upstream commit 58030c76cce473b6cfd630bbecb97215def0dff8 ]
Set static rate to 0 as it should be discovered by path query and has no meaning for RoCE. This also avoid of using the rtnl lock and ethtool API, which is a bottleneck when try to setup many rdma-cm connections at the same time, especially with multiple processes.
Fixes: 3c86aa70bf67 ("RDMA/cm: Add RDMA CM support for IBoE devices") Signed-off-by: Mark Zhang markzhang@nvidia.com Link: https://lore.kernel.org/r/f72a4f8b667b803aee9fa794069f61afb5839ce4.168596056... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/cma.c | 4 ++-- include/rdma/ib_addr.h | 23 ----------------------- 2 files changed, 2 insertions(+), 25 deletions(-)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index c6a671edba5c8..4632b1833381a 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -3293,7 +3293,7 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) route->path_rec->traffic_class = tos; route->path_rec->mtu = iboe_get_mtu(ndev->mtu); route->path_rec->rate_selector = IB_SA_EQ; - route->path_rec->rate = iboe_get_rate(ndev); + route->path_rec->rate = IB_RATE_PORT_CURRENT; dev_put(ndev); route->path_rec->packet_life_time_selector = IB_SA_EQ; /* In case ACK timeout is set, use this value to calculate @@ -4955,7 +4955,7 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, if (!ndev) return -ENODEV;
- ib.rec.rate = iboe_get_rate(ndev); + ib.rec.rate = IB_RATE_PORT_CURRENT; ib.rec.hop_limit = 1; ib.rec.mtu = iboe_get_mtu(ndev->mtu);
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h index d808dc3d239e8..811a0f11d0dbe 100644 --- a/include/rdma/ib_addr.h +++ b/include/rdma/ib_addr.h @@ -194,29 +194,6 @@ static inline enum ib_mtu iboe_get_mtu(int mtu) return 0; }
-static inline int iboe_get_rate(struct net_device *dev) -{ - struct ethtool_link_ksettings cmd; - int err; - - rtnl_lock(); - err = __ethtool_get_link_ksettings(dev, &cmd); - rtnl_unlock(); - if (err) - return IB_RATE_PORT_CURRENT; - - if (cmd.base.speed >= 40000) - return IB_RATE_40_GBPS; - else if (cmd.base.speed >= 30000) - return IB_RATE_30_GBPS; - else if (cmd.base.speed >= 20000) - return IB_RATE_20_GBPS; - else if (cmd.base.speed >= 10000) - return IB_RATE_10_GBPS; - else - return IB_RATE_PORT_CURRENT; -} - static inline int rdma_link_local_addr(struct in6_addr *addr) { if (addr->s6_addr32[0] == htonl(0xfe800000) &&