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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Mar 2024 14:56:11.5372 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 42485a29-ecdf-41f2-c946-08dc4436e395 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF00017092.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7708 NLA_UINT attributes have a 4-byte payload if possible, and an 8-byte one if necessary. Add a function to extract these. Since we need to dispatch on length anyway, make the getter truly universal by supporting also u8 and u16. Signed-off-by: Petr Machata --- Notes: v2: - have rta_getattr_uint() support 8- and 16-bit quantities as well include/libnetlink.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/libnetlink.h b/include/libnetlink.h index ad7e7127..35a9bb57 100644 --- a/include/libnetlink.h +++ b/include/libnetlink.h @@ -260,6 +260,20 @@ static inline __u64 rta_getattr_u64(const struct rtattr *rta) memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); return tmp; } +static inline __u64 rta_getattr_uint(const struct rtattr *rta) +{ + switch (RTA_PAYLOAD(rta)) { + case sizeof(__u8): + return rta_getattr_u8(rta); + case sizeof(__u16): + return rta_getattr_u16(rta); + case sizeof(__u32): + return rta_getattr_u32(rta); + case sizeof(__u64): + return rta_getattr_u64(rta); + } + return -1ULL; +} static inline __s32 rta_getattr_s32(const struct rtattr *rta) { return *(__s32 *)RTA_DATA(rta); -- 2.43.0