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X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2023 10:59:53.0785 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: T0xeZVzL3nm4RxPvGJiqXky53J1lDn7Lbl3vi1oxHuZq2bUxDJ3vz/mdQGAWkzmuGBH0Wf+5rf5E1gqw9ghhjw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR18MB3885 X-Proofpoint-ORIG-GUID: uun2wPPFRvO5EDQyqQhOImSz1F2Nx4sm X-Proofpoint-GUID: uun2wPPFRvO5EDQyqQhOImSz1F2Nx4sm X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org > -----Original Message----- > From: Qian Hao > Sent: Wednesday, December 13, 2023 12:07 PM > To: dev@dpdk.org > Cc: Volodymyr Fialko > Subject: [EXT] [PATCH v3] examples/packet_ordering: fix segfault in disab= le_reorder mode >=20 > External Email >=20 > ---------------------------------------------------------------------- > The packet_ordering example works in two modes (opt via --disable-reorder= ): > - When reorder is enabled: rx_thread - N*worker_thread - send_thread > - When reorder is disabled: rx_thread - N*worker_thread - tx_thread N p= arallel worker_thread(s) > generate out-of-order packets. >=20 > When reorder is enabled, send_thread uses sequence number generated in rx= _thread (L459) to > enforce packet ordering. Otherwise rx_thread just sends any packet it rec= eives. >=20 > rx_thread writes sequence number into a dynamic field, which is only regi= stered by calling > rte_reorder_create() (Line 741) when reorder is enabled. However, rx_thre= ad marks sequence > number onto each packet no matter whether reorder is enabled, overwriting= the leading bytes in > packet mbufs when reorder is disabled, resulting in segfaults when PMD tr= ies to DMA packets. >=20 > `if (!disable_reorder_flag) {...}` is added in rx_thread to fix the bug. > The test is inlined by the compiler to prevent any performance loss. >=20 > Signed-off-by: Qian Hao > --- > examples/packet_ordering/main.c | 32 +++++++++++++++++++++++++------- > 1 file changed, 25 insertions(+), 7 deletions(-) >=20 Acked-by: Volodymyr Fialko =20 /Volodymyr