diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2026-06-24 19:30:56 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2026-06-24 19:30:56 +0000 |
| commit | b6354f04081823cc0ccf2af573a59a826d7763c8 (patch) | |
| tree | 70b6089f5ab53725719ba36ed3b123d63e88ef35 | |
| parent | 45c0d87c57298599397204179c2c4fa0f580a5d9 (diff) | |
OFED: Calculate UDP source port based on flow label or lqpn/rqpn
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.
Tested by: Wafa Hamzah <wafah@nvidia.com> (mlx5_ib)
Tested by: John Baldwin <jhb@FreeBSD.org> (iw_cxgbe)
Obtained from: Linux commit 18451db82ef7f943c60a7fce685f16172bda5106
Sponsored by: Chelsio Communications
| -rw-r--r-- | sys/ofed/include/rdma/ib_verbs.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/ofed/include/rdma/ib_verbs.h b/sys/ofed/include/rdma/ib_verbs.h index 38e6858e767f..8ac13023020b 100644 --- a/sys/ofed/include/rdma/ib_verbs.h +++ b/sys/ofed/include/rdma/ib_verbs.h @@ -4223,4 +4223,21 @@ 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); +} #endif /* IB_VERBS_H */ |