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Date: Tue, 07 Apr 2015 14:38:45 +0200
From: Michael Wang <yun.wang@...fitbricks.com>
To: Roland Dreier <roland@...nel.org>,
Sean Hefty <sean.hefty@...el.com>, linux-rdma@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
netdev@...r.kernel.org
CC: Hal Rosenstock <hal.rosenstock@...il.com>,
Tom Tucker <tom@...ngridcomputing.com>,
Steve Wise <swise@...ngridcomputing.com>,
Hoang-Nam Nguyen <hnguyen@...ibm.com>,
Christoph Raisch <raisch@...ibm.com>,
Mike Marciniszyn <infinipath@...el.com>,
Eli Cohen <eli@...lanox.com>,
Faisal Latif <faisal.latif@...el.com>,
Upinder Malhi <umalhi@...co.com>,
Trond Myklebust <trond.myklebust@...marydata.com>,
"J. Bruce Fields" <bfields@...ldses.org>,
"David S. Miller" <davem@...emloft.net>,
Ira Weiny <ira.weiny@...el.com>,
PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
Tatyana Nikolova <Tatyana.E.Nikolova@...el.com>,
Or Gerlitz <ogerlitz@...lanox.com>,
Jack Morgenstein <jackm@....mellanox.co.il>,
Haggai Eran <haggaie@...lanox.com>,
Ilya Nelkenbaum <ilyan@...lanox.com>,
Yann Droneaud <ydroneaud@...eya.com>,
Bart Van Assche <bvanassche@....org>,
Shachar Raindel <raindel@...lanox.com>,
Sagi Grimberg <sagig@...lanox.com>,
Devesh Sharma <devesh.sharma@...lex.com>,
Matan Barak <matanb@...lanox.com>,
Moni Shoua <monis@...lanox.com>, Jiri Kosina <jkosina@...e.cz>,
Selvin Xavier <selvin.xavier@...lex.com>,
Mitesh Ahuja <mitesh.ahuja@...lex.com>,
Li RongQing <roy.qing.li@...il.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Alex Estrin <alex.estrin@...el.com>,
Doug Ledford <dledford@...hat.com>,
Eric Dumazet <edumazet@...gle.com>,
Erez Shitrit <erezsh@...lanox.com>,
Tom Gundersen <teg@...m.no>,
Chuck Lever <chuck.lever@...cle.com>,
Michael Wang <yun.wang@...fitbricks.com>
Subject: [PATCH v2 15/17] IB/Verbs: Reform cma_acquire_dev() with management
helpers
Reform cma_acquire_dev() with management helpers, introduce
cma_validate_port() to make the code more clean.
Cc: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc: Doug Ledford <dledford@...hat.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: Sean Hefty <sean.hefty@...el.com>
Signed-off-by: Michael Wang <yun.wang@...fitbricks.com>
---
drivers/infiniband/core/cma.c | 69 +++++++++++++++++++++++++------------------
1 file changed, 41 insertions(+), 28 deletions(-)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index e26b42e..dc05cd0 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -370,18 +370,36 @@ static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_a
return ret;
}
+static inline int cma_validate_port(struct ib_device *device, u8 port,
+ union ib_gid *gid, int dev_type)
+{
+ u8 found_port;
+ int ret = -ENODEV;
+
+ if ((dev_type == ARPHRD_INFINIBAND) && !rdma_transport_ib(device, port))
+ return ret;
+
+ if ((dev_type != ARPHRD_INFINIBAND) && rdma_transport_ib(device, port))
+ return ret;
+
+ ret = ib_find_cached_gid(device, gid, &found_port, NULL);
+
+ if (!ret && (port == found_port))
+ return 0;
+
+ return ret;
+}
+
static int cma_acquire_dev(struct rdma_id_private *id_priv,
struct rdma_id_private *listen_id_priv)
{
struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
struct cma_device *cma_dev;
- union ib_gid gid, iboe_gid;
+ union ib_gid gid, iboe_gid, *gidp;
int ret = -ENODEV;
- u8 port, found_port;
- enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ?
- IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
+ u8 port;
- if (dev_ll != IB_LINK_LAYER_INFINIBAND &&
+ if (dev_addr->dev_type != ARPHRD_INFINIBAND &&
id_priv->id.ps == RDMA_PS_IPOIB)
return -EINVAL;
@@ -391,41 +409,36 @@ static int cma_acquire_dev(struct rdma_id_private *id_priv,
memcpy(&gid, dev_addr->src_dev_addr +
rdma_addr_gid_offset(dev_addr), sizeof gid);
- if (listen_id_priv &&
- rdma_port_get_link_layer(listen_id_priv->id.device,
- listen_id_priv->id.port_num) == dev_ll) {
+
+ if (listen_id_priv) {
cma_dev = listen_id_priv->cma_dev;
port = listen_id_priv->id.port_num;
- if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
- rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
- ret = ib_find_cached_gid(cma_dev->device, &iboe_gid,
- &found_port, NULL);
- else
- ret = ib_find_cached_gid(cma_dev->device, &gid,
- &found_port, NULL);
+ gidp = rdma_transport_iboe(cma_dev->device, port) ?
+ &iboe_gid : &gid;
- if (!ret && (port == found_port)) {
- id_priv->id.port_num = found_port;
+ ret = cma_validate_port(cma_dev->device, port, gidp,
+ dev_addr->dev_type);
+ if (!ret) {
+ id_priv->id.port_num = port;
goto out;
}
}
+
list_for_each_entry(cma_dev, &dev_list, list) {
for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) {
if (listen_id_priv &&
listen_id_priv->cma_dev == cma_dev &&
listen_id_priv->id.port_num == port)
continue;
- if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) {
- if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
- rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
- ret = ib_find_cached_gid(cma_dev->device, &iboe_gid, &found_port, NULL);
- else
- ret = ib_find_cached_gid(cma_dev->device, &gid, &found_port, NULL);
-
- if (!ret && (port == found_port)) {
- id_priv->id.port_num = found_port;
- goto out;
- }
+
+ gidp = rdma_transport_iboe(cma_dev->device, port) ?
+ &iboe_gid : &gid;
+
+ ret = cma_validate_port(cma_dev->device, port, gidp,
+ dev_addr->dev_type);
+ if (!ret) {
+ id_priv->id.port_num = port;
+ goto out;
}
}
}
--
2.1.0
--
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