diff options
Diffstat (limited to 'src/rtnl_neightbl.c')
| -rw-r--r-- | src/rtnl_neightbl.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/rtnl_neightbl.c b/src/rtnl_neightbl.c new file mode 100644 index 000000000..46a279f58 --- /dev/null +++ b/src/rtnl_neightbl.c @@ -0,0 +1,164 @@ +/* + * Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr> + * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com> + * Copyright (c) 2016-2020 The strace developers. + * All rights reserved. + * + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#include "defs.h" +#include "netlink_route.h" +#include "nlattr.h" + +#include "types/rtnl_neightbl.h" + +#include "xlat/rtnl_neightbl_attrs.h" +#include "xlat/rtnl_neightbl_parms_attrs.h" + +static bool +decode_ndt_config(struct tcb *const tcp, + const kernel_ulong_t addr, + const unsigned int len, + const void *const opaque_data) +{ + struct_ndt_config ndtc; + + if (len < sizeof(ndtc)) + return false; + else if (!umove_or_printaddr(tcp, addr, &ndtc)) { + tprint_struct_begin(); + PRINT_FIELD_U(ndtc, ndtc_key_len); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_entry_size); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_entries); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_last_flush); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_last_rand); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_hash_rnd); + tprint_struct_next(); + PRINT_FIELD_0X(ndtc, ndtc_hash_mask); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_hash_chain_gc); + tprint_struct_next(); + PRINT_FIELD_U(ndtc, ndtc_proxy_qlen); + tprint_struct_end(); + } + + return true; +} + +static const nla_decoder_t ndt_parms_nla_decoders[] = { + [NDTPA_IFINDEX] = decode_nla_ifindex, + [NDTPA_REFCNT] = decode_nla_u32, + [NDTPA_REACHABLE_TIME] = decode_nla_u64, + [NDTPA_BASE_REACHABLE_TIME] = decode_nla_u64, + [NDTPA_RETRANS_TIME] = decode_nla_u64, + [NDTPA_GC_STALETIME] = decode_nla_u64, + [NDTPA_DELAY_PROBE_TIME] = decode_nla_u64, + [NDTPA_QUEUE_LEN] = decode_nla_u32, + [NDTPA_APP_PROBES] = decode_nla_u32, + [NDTPA_UCAST_PROBES] = decode_nla_u32, + [NDTPA_MCAST_PROBES] = decode_nla_u32, + [NDTPA_ANYCAST_DELAY] = decode_nla_u64, + [NDTPA_PROXY_DELAY] = decode_nla_u64, + [NDTPA_PROXY_QLEN] = decode_nla_u32, + [NDTPA_LOCKTIME] = decode_nla_u64, + [NDTPA_QUEUE_LENBYTES] = decode_nla_u32, + [NDTPA_MCAST_REPROBES] = decode_nla_u32, + [NDTPA_PAD] = NULL +}; + +static bool +decode_ndta_parms(struct tcb *const tcp, + const kernel_ulong_t addr, + const unsigned int len, + const void *const opaque_data) +{ + decode_nlattr(tcp, addr, len, rtnl_neightbl_parms_attrs, "NDTPA_???", + ndt_parms_nla_decoders, + ARRAY_SIZE(ndt_parms_nla_decoders), opaque_data); + + return true; +} + +static bool +decode_ndt_stats(struct tcb *const tcp, + const kernel_ulong_t addr, + const unsigned int len, + const void *const opaque_data) +{ + struct_ndt_stats ndtst; + const unsigned int min_size = + offsetofend(struct ndt_stats, ndts_forced_gc_runs); + const unsigned int def_size = sizeof(ndtst); + const unsigned int size = + (len >= def_size) ? def_size : + ((len == min_size) ? min_size : 0); + + if (!size) + return false; + + if (!umoven_or_printaddr(tcp, addr, size, &ndtst)) { + tprint_struct_begin(); + PRINT_FIELD_U(ndtst, ndts_allocs); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_destroys); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_hash_grows); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_res_failed); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_lookups); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_hits); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_rcv_probes_mcast); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_rcv_probes_ucast); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_periodic_gc_runs); + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_forced_gc_runs); + if (len >= def_size) { + tprint_struct_next(); + PRINT_FIELD_U(ndtst, ndts_table_fulls); + } + tprint_struct_end(); + } + + return true; +} + +static const nla_decoder_t ndtmsg_nla_decoders[] = { + [NDTA_NAME] = decode_nla_str, + [NDTA_THRESH1] = decode_nla_u32, + [NDTA_THRESH2] = decode_nla_u32, + [NDTA_THRESH3] = decode_nla_u32, + [NDTA_CONFIG] = decode_ndt_config, + [NDTA_PARMS] = decode_ndta_parms, + [NDTA_STATS] = decode_ndt_stats, + [NDTA_GC_INTERVAL] = decode_nla_u64, + [NDTA_PAD] = NULL, +}; + +DECL_NETLINK_ROUTE_DECODER(decode_ndtmsg) +{ + struct ndtmsg ndtmsg = { .ndtm_family = family }; + + tprint_struct_begin(); + PRINT_FIELD_XVAL(ndtmsg, ndtm_family, addrfams, "AF_???"); + tprint_struct_end(); + + const size_t offset = NLMSG_ALIGN(sizeof(ndtmsg)); + if (len > offset) { + tprints(", "); + decode_nlattr(tcp, addr + offset, len - offset, + rtnl_neightbl_attrs, "NDTA_???", + ndtmsg_nla_decoders, + ARRAY_SIZE(ndtmsg_nla_decoders), NULL); + } +} |