From 5736c7c499f142bceec06a2ab3113997d0175f80 Mon Sep 17 00:00:00 2001 From: Andrew Boyer Date: Thu, 1 Nov 2018 09:18:45 -0400 Subject: RDMA/rxe: Distinguish between down links and disabled links In ib_query_port(), use the netdev's IFF_UP flag to determine phys_state (flag set = down = POLLING, flag clear = disabled = DISABLED). Callers can then use the phys_state field to distinguish between links which have a dead partner, cable missing, etc., from links which are turned off on the local node. This is useful for HA and supportability. Signed-off-by: Andrew Boyer Signed-off-by: Doug Ledford --- drivers/infiniband/sw/rxe/rxe.h | 5 +++-- drivers/infiniband/sw/rxe/rxe_net.c | 2 -- drivers/infiniband/sw/rxe/rxe_verbs.c | 8 ++++++++ 3 files changed, 11 insertions(+), 4 deletions(-) (limited to 'drivers/infiniband/sw') diff --git a/drivers/infiniband/sw/rxe/rxe.h b/drivers/infiniband/sw/rxe/rxe.h index d9ec2de68738..8f79bd86d033 100644 --- a/drivers/infiniband/sw/rxe/rxe.h +++ b/drivers/infiniband/sw/rxe/rxe.h @@ -65,8 +65,9 @@ */ #define RXE_UVERBS_ABI_VERSION 2 -#define IB_PHYS_STATE_LINK_UP (5) -#define IB_PHYS_STATE_LINK_DOWN (3) +#define RDMA_LINK_PHYS_STATE_LINK_UP (5) +#define RDMA_LINK_PHYS_STATE_DISABLED (3) +#define RDMA_LINK_PHYS_STATE_POLLING (2) #define RXE_ROCE_V2_SPORT (0xc000) diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c index 40e82e0f6c2d..cb028a3d8275 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -607,7 +607,6 @@ void rxe_port_up(struct rxe_dev *rxe) port = &rxe->port; port->attr.state = IB_PORT_ACTIVE; - port->attr.phys_state = IB_PHYS_STATE_LINK_UP; rxe_port_event(rxe, IB_EVENT_PORT_ACTIVE); dev_info(&rxe->ib_dev.dev, "set active\n"); @@ -620,7 +619,6 @@ void rxe_port_down(struct rxe_dev *rxe) port = &rxe->port; port->attr.state = IB_PORT_DOWN; - port->attr.phys_state = IB_PHYS_STATE_LINK_DOWN; rxe_port_event(rxe, IB_EVENT_PORT_ERR); dev_info(&rxe->ib_dev.dev, "set down\n"); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index 9c19f2027511..4eef87c103b2 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -71,6 +71,14 @@ static int rxe_query_port(struct ib_device *dev, mutex_lock(&rxe->usdev_lock); rc = ib_get_eth_speed(dev, port_num, &attr->active_speed, &attr->active_width); + + if (attr->state == IB_PORT_ACTIVE) + attr->phys_state = RDMA_LINK_PHYS_STATE_LINK_UP; + else if (dev_get_flags(rxe->ndev) & IFF_UP) + attr->phys_state = RDMA_LINK_PHYS_STATE_POLLING; + else + attr->phys_state = RDMA_LINK_PHYS_STATE_DISABLED; + mutex_unlock(&rxe->usdev_lock); out: -- cgit v1.2.3-59-g8ed1b