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Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: [PATCH 1/4] RDMA/core: Calculate UDP source port based on flow label or lqpn/rqpn Content-Language: en-US To: yanjun.zhu@linux.dev, liangwenpeng@huawei.com, liweihang@huawei.com, jgg@ziepe.ca, mustafa.ismail@intel.com, shiraz.saleem@intel.com, zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org References: <20220105080727.2143737-1-yanjun.zhu@linux.dev> <20220105080727.2143737-2-yanjun.zhu@linux.dev> From: Mark Zhang In-Reply-To: <20220105080727.2143737-2-yanjun.zhu@linux.dev> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SI2PR04CA0013.apcprd04.prod.outlook.com (2603:1096:4:197::6) To PH0PR12MB5401.namprd12.prod.outlook.com (2603:10b6:510:d4::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 963447db-7385-4b21-0fcb-08d9d05279b3 X-MS-TrafficTypeDiagnostic: PH0PR12MB5467:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7691; 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If flow label > is not defined in GRH then calculate it based on lqpn/rqpn. > > Signed-off-by: Zhu Yanjun > --- > 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..2f122aa81f0f 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 Indent: + * @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 */ Maybe this and next patch can be squashed into one?