From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jinpu Wang Subject: [PATCH 2/4] IB/core: export ib_get_cached_port_state Date: Mon, 12 Dec 2016 12:45:26 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Return-path: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford , "Hefty, Sean" , Hal Rosenstock , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Michael Wang , Jason Gunthorpe List-Id: linux-rdma@vger.kernel.org >>From 1cf770be635e987e31feed2f7c82b9f4f3bd316a Mon Sep 17 00:00:00 2001 From: Jack Wang Date: Mon, 12 Dec 2016 10:12:39 +0100 Subject: [PATCH 2/4] IB/core: export ib_get_cached_port_state Export function for rdma_cm, patch will follow. Signed-off-by: Jack Wang Reviewed-by: Michael Wang --- drivers/infiniband/core/cache.c | 18 ++++++++++++++++++ include/rdma/ib_cache.h | 13 +++++++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cach= e.c index 025db27..1b064cf 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1025,6 +1025,24 @@ int ib_get_cached_lmc(struct ib_device *device, } EXPORT_SYMBOL(ib_get_cached_lmc); +int ib_get_cached_port_state(struct ib_device *device, + u8 port_num, + enum ib_port_state *port_state) +{ + unsigned long flags; + int ret =3D 0; + + if (port_num < rdma_start_port(device) || port_num > rdma_end_port(dev= ice)) + return -EINVAL; + + read_lock_irqsave(&device->cache.lock, flags); + *port_state =3D device->cache.port_state_cache[port_num - rdma_start_port(device)]; + read_unlock_irqrestore(&device->cache.lock, flags); + + return ret; +} +EXPORT_SYMBOL(ib_get_cached_port_state); + static void ib_cache_update(struct ib_device *device, u8 port) { diff --git a/include/rdma/ib_cache.h b/include/rdma/ib_cache.h index e30f19b..385ec88 100644 --- a/include/rdma/ib_cache.h +++ b/include/rdma/ib_cache.h @@ -165,4 +165,17 @@ int ib_get_cached_lmc(struct ib_device *device, u8 port_num, u8 *lmc); +/** + * ib_get_cached_port_state - Returns a cached port state table entry + * @device: The device to query. + * @port_num: The port number of the device to query. + * @port_state: port_state for the specified port for that device. + * + * ib_get_cached_port_state() fetches the specified port_state table entry stored in + * the local software cache. + */ +int ib_get_cached_port_state(struct ib_device *device, + u8 port_num, + enum ib_port_state *port_active); + #endif /* _IB_CACHE_H */ --=20 2.7.4 --=20 Jinpu Wang Linux Kernel Developer ProfitBricks GmbH Greifswalder Str. 207 D - 10405 Berlin Tel: +49 30 577 008 042 Fax: +49 30 577 008 299 Email: jinpu.wang-EIkl63zCoXaH+58JC4qpiA@public.gmane.org URL: https://www.profitbricks.de Sitz der Gesellschaft: Berlin Registergericht: Amtsgericht Charlottenburg, HRB 125506 B Gesch=C3=A4ftsf=C3=BChrer: Achim Weiss -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html