From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
Calculate and set UDP source port based on the flow label. If flow label
is not defined in GRH then calculate it based on lqpn/rqpn.
Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
include/rdma/ib_verbs.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 6e9ad656ecb7..69d883f7fb41 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4749,6 +4749,23 @@ static inline u32 rdma_calc_flow_label(u32 lqpn, u32 rqpn)
return (u32)(v & IB_GRH_FLOWLABEL_MASK);
}
+/**
+ * rdma_get_udp_sport - Calculate and set UDP source port based on the flow
+ * label. If flow label is not defined in GRH then
+ * calculate it based on lqpn/rqpn.
+ *
+ * @fl: flow label from GRH
+ * @lqpn: local qp number
+ * @rqpn: remote qp number
+ */
+static inline u16 rdma_get_udp_sport(u32 fl, u32 lqpn, u32 rqpn)
+{
+ if (!fl)
+ fl = rdma_calc_flow_label(lqpn, rqpn);
+
+ return rdma_flow_label_to_udp_sport(fl);
+}
+
const struct ib_port_immutable*
ib_port_immutable_read(struct ib_device *dev, unsigned int port);
#endif /* IB_VERBS_H */
--
2.27.0
