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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM6PR11MB3723.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 793efa7a-1202-4780-2120-08da0e295cfd X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Mar 2022 06:33:24.2106 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: r0PdA4JRCjj+2MSmP6uZbuEVj87H3A3kaFJ8BSdXQts6s8rayR2SfmMeOdWs7jzN/Z99Pj6equJi7gvtterR7w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2194 X-OriginatorOrg: intel.com X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org > -----Original Message----- > From: Xu, Ting > Sent: Friday, March 18, 2022 11:17 > To: dev@dpdk.org > Cc: Guo, Junfeng ; Xu, Ting > ; stable@dpdk.org; Yang, Qiming > ; Zhang, Qi Z > Subject: [PATCH] net/ice: fix raw flow input pattern value change in FDIR >=20 > When parsing raw flow pattern in FDIR, the input parameter spec and > mask are used directly and the original value will be changed. It > will cause error if these values are used in other functions. In this > patch, temporary variables are created to store the spec and mask. >=20 > Fixes: 25be39cc1760 ("net/ice: enable protocol agnostic flow offloading > in FDIR") >=20 > Cc: stable@dpdk.org >=20 > Signed-off-by: Ting Xu > --- > drivers/net/ice/ice_fdir_filter.c | 25 +++++++++++++++++++------ > 1 file changed, 19 insertions(+), 6 deletions(-) >=20 > diff --git a/drivers/net/ice/ice_fdir_filter.c > b/drivers/net/ice/ice_fdir_filter.c > index 7954c6d8ea..6e3851a71b 100644 > --- a/drivers/net/ice/ice_fdir_filter.c > +++ b/drivers/net/ice/ice_fdir_filter.c > @@ -1868,14 +1868,15 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, > break; >=20 > /* convert raw spec & mask from byte string to > int */ > - unsigned char *tmp_spec =3D > + unsigned char *spec_pattern =3D > (uint8_t *)(uintptr_t)raw_spec->pattern; > - unsigned char *tmp_mask =3D > + unsigned char *mask_pattern =3D > (uint8_t *)(uintptr_t)raw_mask->pattern; > uint16_t udp_port =3D 0; > uint16_t tmp_val =3D 0; > uint8_t pkt_len =3D 0; > uint8_t tmp =3D 0; > + uint8_t *tmp_spec, *tmp_mask; It would be better to shift this line of code UP four lines, to match the c= oding style. The rest looks good on me. Thanks! > int i, j; >=20 > pkt_len =3D strlen((char *)(uintptr_t)raw_spec- > >pattern); > @@ -1883,8 +1884,18 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, > pkt_len) > return -rte_errno; >=20 > + tmp_spec =3D rte_zmalloc(NULL, pkt_len / 2, 0); > + if (!tmp_spec) > + return -rte_errno; > + > + tmp_mask =3D rte_zmalloc(NULL, pkt_len / 2, 0); > + if (!tmp_mask) { > + rte_free(tmp_spec); > + return -rte_errno; > + } > + > for (i =3D 0, j =3D 0; i < pkt_len; i +=3D 2, j++) { > - tmp =3D tmp_spec[i]; > + tmp =3D spec_pattern[i]; > if (tmp >=3D 'a' && tmp <=3D 'f') > tmp_val =3D tmp - 'a' + 10; > if (tmp >=3D 'A' && tmp <=3D 'F') > @@ -1893,7 +1904,7 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, > tmp_val =3D tmp - '0'; >=20 > tmp_val *=3D 16; > - tmp =3D tmp_spec[i + 1]; > + tmp =3D spec_pattern[i + 1]; > if (tmp >=3D 'a' && tmp <=3D 'f') > tmp_spec[j] =3D tmp_val + tmp - 'a' > + 10; > if (tmp >=3D 'A' && tmp <=3D 'F') > @@ -1901,7 +1912,7 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, > if (tmp >=3D '0' && tmp <=3D '9') > tmp_spec[j] =3D tmp_val + tmp - '0'; >=20 > - tmp =3D tmp_mask[i]; > + tmp =3D mask_pattern[i]; > if (tmp >=3D 'a' && tmp <=3D 'f') > tmp_val =3D tmp - 'a' + 10; > if (tmp >=3D 'A' && tmp <=3D 'F') > @@ -1910,7 +1921,7 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, > tmp_val =3D tmp - '0'; >=20 > tmp_val *=3D 16; > - tmp =3D tmp_mask[i + 1]; > + tmp =3D mask_pattern[i + 1]; > if (tmp >=3D 'a' && tmp <=3D 'f') > tmp_mask[j] =3D tmp_val + tmp - > 'a' + 10; > if (tmp >=3D 'A' && tmp <=3D 'F') > @@ -1953,6 +1964,8 @@ ice_fdir_parse_pattern(__rte_unused struct > ice_adapter *ad, >=20 > filter->parser_ena =3D true; >=20 > + rte_free(tmp_spec); > + rte_free(tmp_mask); > break; > } >=20 > -- > 2.17.1