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authorOr Gerlitz <ogerlitz@mellanox.com>2013-12-12 18:03:17 +0200
committerRoland Dreier <roland@purestorage.com>2014-01-19 15:14:04 -0800
commited4c54e5b4baf55a7a67a80fa766334855c94854 (patch)
tree24ee1fc584c644b7d74956be0994f0f4abd36df9 /drivers/infiniband
parent37721d8501a9a1fbe87527c24d127a914b29fd7f (diff)
IB/core: Resolve Ethernet L2 addresses when modifying QP
Existing user space applications provide only IBoE L3 address attributes to the kernel when they issue a modify QP modify. To work with them and let such apps (plus kernel consumers which don't use the RDMA-CM) keep working transparently under the IBoE GID IP addressing changes, add an Eth L2 address resolution helper. Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/core_priv.h2
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c4
-rw-r--r--drivers/infiniband/core/verbs.c43
3 files changed, 49 insertions, 0 deletions
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index a565af5c2d2e..87d1936f5c1c 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -49,4 +49,6 @@ void ib_sysfs_cleanup(void);
int ib_cache_setup(void);
void ib_cache_cleanup(void);
+int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr, int *qp_attr_mask);
#endif /* _CORE_PRIV_H */
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index f1cc83855af6..ea6203ee7bcc 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -40,6 +40,7 @@
#include <asm/uaccess.h>
#include "uverbs.h"
+#include "core_priv.h"
struct uverbs_lock_class {
struct lock_class_key key;
@@ -1961,6 +1962,9 @@ ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
if (qp->real_qp == qp) {
+ ret = ib_resolve_eth_l2_attrs(qp, attr, &cmd.attr_mask);
+ if (ret)
+ goto out;
ret = qp->device->modify_qp(qp, attr,
modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata);
} else {
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 7978394738a3..b3acfc03c74d 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -46,6 +46,8 @@
#include <rdma/ib_cache.h>
#include <rdma/ib_addr.h>
+#include "core_priv.h"
+
int ib_rate_to_mult(enum ib_rate rate)
{
switch (rate) {
@@ -859,10 +861,51 @@ int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
}
EXPORT_SYMBOL(ib_modify_qp_is_ok);
+int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr, int *qp_attr_mask)
+{
+ int ret = 0;
+ union ib_gid sgid;
+
+ if ((*qp_attr_mask & IB_QP_AV) &&
+ (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num) == IB_LINK_LAYER_ETHERNET)) {
+ ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
+ qp_attr->ah_attr.grh.sgid_index, &sgid);
+ if (ret)
+ goto out;
+ if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
+ rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
+ rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
+ qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
+ } else {
+ ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
+ qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
+ if (ret)
+ goto out;
+ ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
+ if (ret)
+ goto out;
+ }
+ *qp_attr_mask |= IB_QP_SMAC;
+ if (qp_attr->vlan_id < 0xFFFF)
+ *qp_attr_mask |= IB_QP_VID;
+ }
+out:
+ return ret;
+}
+EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
+
+
int ib_modify_qp(struct ib_qp *qp,
struct ib_qp_attr *qp_attr,
int qp_attr_mask)
{
+ int ret;
+
+ ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
+ if (ret)
+ return ret;
+
return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
}
EXPORT_SYMBOL(ib_modify_qp);