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Message-Id: <20200430185033.11476-15-maorg@mellanox.com>
Date: Thu, 30 Apr 2020 21:50:31 +0300
From: Maor Gottlieb <maorg@...lanox.com>
To: davem@...emloft.net, jgg@...lanox.com, dledford@...hat.com,
j.vosburgh@...il.com, vfalico@...il.com, andy@...yhouse.net,
kuba@...nel.org, jiri@...lanox.com, dsahern@...nel.org
Cc: leonro@...lanox.com, saeedm@...lanox.com,
linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
alexr@...lanox.com, Maor Gottlieb <maorg@...lanox.com>
Subject: [PATCH V7 rdma-next 14/16] RDMA/core: Get xmit slave for LAG
Add a call to rdma_lag_get_ah_roce_slave when
Address handle is created.
Lower driver can use it to select the QP's affinity port.
Signed-off-by: Maor Gottlieb <maorg@...lanox.com>
Reviewed-by: Leon Romanovsky <leonro@...lanox.com>
---
drivers/infiniband/core/verbs.c | 61 +++++++++++++++++++++++----------
include/rdma/ib_verbs.h | 2 ++
2 files changed, 45 insertions(+), 18 deletions(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 86be8a54a2d6..bf0249f76ae9 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -50,6 +50,7 @@
#include <rdma/ib_cache.h>
#include <rdma/ib_addr.h>
#include <rdma/rw.h>
+#include <rdma/lag.h>
#include "core_priv.h"
#include <trace/events/rdma_core.h>
@@ -500,7 +501,8 @@ rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr,
static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
struct rdma_ah_attr *ah_attr,
u32 flags,
- struct ib_udata *udata)
+ struct ib_udata *udata,
+ struct net_device *xmit_slave)
{
struct rdma_ah_init_attr init_attr = {};
struct ib_device *device = pd->device;
@@ -524,6 +526,7 @@ static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL);
init_attr.ah_attr = ah_attr;
init_attr.flags = flags;
+ init_attr.xmit_slave = xmit_slave;
ret = device->ops.create_ah(ah, &init_attr, udata);
if (ret) {
@@ -550,15 +553,22 @@ struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
u32 flags)
{
const struct ib_gid_attr *old_sgid_attr;
+ struct net_device *slave;
struct ib_ah *ah;
int ret;
ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr);
if (ret)
return ERR_PTR(ret);
-
- ah = _rdma_create_ah(pd, ah_attr, flags, NULL);
-
+ slave = rdma_lag_get_ah_roce_slave(pd->device, ah_attr,
+ (flags & RDMA_CREATE_AH_SLEEPABLE) ?
+ GFP_KERNEL : GFP_ATOMIC);
+ if (IS_ERR(slave)) {
+ rdma_unfill_sgid_attr(ah_attr, old_sgid_attr);
+ return (void *)slave;
+ }
+ ah = _rdma_create_ah(pd, ah_attr, flags, NULL, slave);
+ rdma_lag_put_ah_roce_slave(slave);
rdma_unfill_sgid_attr(ah_attr, old_sgid_attr);
return ah;
}
@@ -597,7 +607,8 @@ struct ib_ah *rdma_create_user_ah(struct ib_pd *pd,
}
}
- ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE, udata);
+ ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE,
+ udata, NULL);
out:
rdma_unfill_sgid_attr(ah_attr, old_sgid_attr);
@@ -1636,11 +1647,35 @@ static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
const struct ib_gid_attr *old_sgid_attr_alt_av;
int ret;
+ attr->xmit_slave = NULL;
if (attr_mask & IB_QP_AV) {
ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr,
&old_sgid_attr_av);
if (ret)
return ret;
+
+ if (attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE &&
+ is_qp_type_connected(qp)) {
+ struct net_device *slave;
+
+ /*
+ * If the user provided the qp_attr then we have to
+ * resolve it. Kerne users have to provide already
+ * resolved rdma_ah_attr's.
+ */
+ if (udata) {
+ ret = ib_resolve_eth_dmac(qp->device,
+ &attr->ah_attr);
+ if (ret)
+ goto out_av;
+ }
+ slave = rdma_lag_get_ah_roce_slave(qp->device,
+ &attr->ah_attr,
+ GFP_KERNEL);
+ if (IS_ERR(slave))
+ goto out_av;
+ attr->xmit_slave = slave;
+ }
}
if (attr_mask & IB_QP_ALT_PATH) {
/*
@@ -1667,18 +1702,6 @@ static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
}
}
- /*
- * If the user provided the qp_attr then we have to resolve it. Kernel
- * users have to provide already resolved rdma_ah_attr's
- */
- if (udata && (attr_mask & IB_QP_AV) &&
- attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE &&
- is_qp_type_connected(qp)) {
- ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr);
- if (ret)
- goto out;
- }
-
if (rdma_ib_or_roce(qp->device, port)) {
if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) {
dev_warn(&qp->device->dev,
@@ -1720,8 +1743,10 @@ static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
if (attr_mask & IB_QP_ALT_PATH)
rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av);
out_av:
- if (attr_mask & IB_QP_AV)
+ if (attr_mask & IB_QP_AV) {
+ rdma_lag_put_ah_roce_slave(attr->xmit_slave);
rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av);
+ }
return ret;
}
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index e6c18ec0365a..8d29f2f79da8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -883,6 +883,7 @@ __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
struct rdma_ah_init_attr {
struct rdma_ah_attr *ah_attr;
u32 flags;
+ struct net_device *xmit_slave;
};
enum rdma_ah_attr_type {
@@ -1272,6 +1273,7 @@ struct ib_qp_attr {
u8 alt_port_num;
u8 alt_timeout;
u32 rate_limit;
+ struct net_device *xmit_slave;
};
enum ib_wr_opcode {
--
2.17.2
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