From: Parav Pandit <parav@xxxxxxxxxxxx>
Currently RoCE route resolve functionality is split between
two functions. (a) roce_resolve_route_from_path() and its helper
function rdma_resolve_ip_route().
Due to this multiple sockaddr src structures are created in both
functions with rdma_dev_addr is an interface between the two for checks.
Since there is only one user of rdma_resolve_ip_route() as RoCE, combine
the functionality of both functions to roce_resolve_route_from_path()
and further reduce the scope of rdma_dev_addr to core/addr.c
This also allow to extend addr_resolve() in subsequent patch to consider
netdev properties of GID in safer way under rcu lock.
Additionally src and dst addresses were always provided, so skip the
src addr NULL pointer check as they are present on the stack now.
Signed-off-by: Parav Pandit <parav@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/addr.c | 51 +++++++++++++++++++++++++++----------
drivers/infiniband/core/core_priv.h | 3 +++
drivers/infiniband/core/sa_query.c | 40 -----------------------------
3 files changed, 41 insertions(+), 53 deletions(-)
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 3a88d724a3de..846d1bb2c9c9 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -45,6 +45,7 @@
#include <net/addrconf.h>
#include <net/ip6_route.h>
#include <rdma/ib_addr.h>
+#include <rdma/ib_sa.h>
#include <rdma/ib.h>
#include <rdma/rdma_netlink.h>
#include <net/netlink.h>
@@ -661,23 +662,47 @@ int rdma_resolve_ip(struct sockaddr *src_addr, const struct sockaddr *dst_addr,
}
EXPORT_SYMBOL(rdma_resolve_ip);
-int rdma_resolve_ip_route(struct sockaddr *src_addr,
- const struct sockaddr *dst_addr,
- struct rdma_dev_addr *addr)
+int roce_resolve_route_from_path(struct sa_path_rec *rec,
+ const struct ib_gid_attr *attr)
{
- struct sockaddr_storage ssrc_addr = {};
- struct sockaddr *src_in = (struct sockaddr *)&ssrc_addr;
+ union {
+ struct sockaddr _sockaddr;
+ struct sockaddr_in _sockaddr_in;
+ struct sockaddr_in6 _sockaddr_in6;
+ } sgid, dgid;
+ struct rdma_dev_addr dev_addr = {};
+ int ret;
- if (src_addr) {
- if (src_addr->sa_family != dst_addr->sa_family)
- return -EINVAL;
+ if (rec->roce.route_resolved)
+ return 0;
- memcpy(src_in, src_addr, rdma_addr_size(src_addr));
- } else {
- src_in->sa_family = dst_addr->sa_family;
- }
+ rdma_gid2ip(&sgid._sockaddr, &rec->sgid);
+ rdma_gid2ip(&dgid._sockaddr, &rec->dgid);
+
+ if (sgid._sockaddr.sa_family != dgid._sockaddr.sa_family)
+ return -EINVAL;
+
+ if (!attr || !attr->ndev)
+ return -EINVAL;
+
+ dev_addr.bound_dev_if = attr->ndev->ifindex;
+ /* TODO: Use net from the ib_gid_attr once it is added to it,
+ * until than, limit itself to init_net.
+ */
+ dev_addr.net = &init_net;
- return addr_resolve(src_in, dst_addr, addr, false, 0);
+ ret = addr_resolve(&sgid._sockaddr, &dgid._sockaddr,
+ &dev_addr, false, 0);
+ if (ret)
+ return ret;
+
+ if ((dev_addr.network == RDMA_NETWORK_IPV4 ||
+ dev_addr.network == RDMA_NETWORK_IPV6) &&
+ rec->rec_type != SA_PATH_REC_TYPE_ROCE_V2)
+ return -EINVAL;
+
+ rec->roce.route_resolved = true;
+ return 0;
}
/**
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index c3d93350413c..4dfcf41d83c0 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -343,4 +343,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
const struct net_device *dev);
+struct sa_path_rec;
+int roce_resolve_route_from_path(struct sa_path_rec *rec,
+ const struct ib_gid_attr *attr);
#endif /* _CORE_PRIV_H */
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index 7b794a14d6e8..d3d6275b3b7e 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -1227,46 +1227,6 @@ static u8 get_src_path_mask(struct ib_device *device, u8 port_num)
return src_path_mask;
}
-static int roce_resolve_route_from_path(struct sa_path_rec *rec,
- const struct ib_gid_attr *attr)
-{
- struct rdma_dev_addr dev_addr = {};
- union {
- struct sockaddr _sockaddr;
- struct sockaddr_in _sockaddr_in;
- struct sockaddr_in6 _sockaddr_in6;
- } sgid_addr, dgid_addr;
- int ret;
-
- if (rec->roce.route_resolved)
- return 0;
- if (!attr || !attr->ndev)
- return -EINVAL;
-
- dev_addr.bound_dev_if = attr->ndev->ifindex;
- /* TODO: Use net from the ib_gid_attr once it is added to it,
- * until than, limit itself to init_net.
- */
- dev_addr.net = &init_net;
-
- rdma_gid2ip(&sgid_addr._sockaddr, &rec->sgid);
- rdma_gid2ip(&dgid_addr._sockaddr, &rec->dgid);
-
- /* validate the route */
- ret = rdma_resolve_ip_route(&sgid_addr._sockaddr,
- &dgid_addr._sockaddr, &dev_addr);
- if (ret)
- return ret;
-
- if ((dev_addr.network == RDMA_NETWORK_IPV4 ||
- dev_addr.network == RDMA_NETWORK_IPV6) &&
- rec->rec_type != SA_PATH_REC_TYPE_ROCE_V2)
- return -EINVAL;
-
- rec->roce.route_resolved = true;
- return 0;
-}
-
static int init_ah_attr_grh_fields(struct ib_device *device, u8 port_num,
struct sa_path_rec *rec,
struct rdma_ah_attr *ah_attr,
--
2.14.4
