#include <linux/rtnetlink.h>
#include "xlat/ip_type_of_services.h"
+#include "xlat/lwtunnel_encap_types.h"
+#include "xlat/route_nexthop_flags.h"
#include "xlat/routing_flags.h"
#include "xlat/routing_protocols.h"
#include "xlat/routing_table_ids.h"
#include "xlat/routing_types.h"
#include "xlat/rtnl_route_attrs.h"
+#include "xlat/rtnl_rta_metrics_attrs.h"
+
+bool
+decode_nla_rt_class(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ uint32_t num;
+
+ if (len < sizeof(num))
+ return false;
+ if (!umove_or_printaddr(tcp, addr, &num))
+ printxval(routing_table_ids, num, NULL);
+ return true;
+}
+
+static bool
+decode_route_addr(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ const struct rtmsg *const rtmsg = opaque_data;
+
+ decode_inet_addr(tcp, addr, len, rtmsg->rtm_family, NULL);
+
+ return true;
+}
+
+static const nla_decoder_t rta_metrics_nla_decoders[] = {
+ [RTAX_LOCK] = decode_nla_u32,
+ [RTAX_MTU] = decode_nla_u32,
+ [RTAX_WINDOW] = decode_nla_u32,
+ [RTAX_RTT] = decode_nla_u32,
+ [RTAX_RTTVAR] = decode_nla_u32,
+ [RTAX_SSTHRESH] = decode_nla_u32,
+ [RTAX_CWND] = decode_nla_u32,
+ [RTAX_ADVMSS] = decode_nla_u32,
+ [RTAX_REORDERING] = decode_nla_u32,
+ [RTAX_HOPLIMIT] = decode_nla_u32,
+ [RTAX_INITCWND] = decode_nla_u32,
+ [RTAX_FEATURES] = decode_nla_u32,
+ [RTAX_RTO_MIN] = decode_nla_u32,
+ [RTAX_INITRWND] = decode_nla_u32,
+ [RTAX_QUICKACK] = decode_nla_u32,
+ [RTAX_CC_ALGO] = decode_nla_str
+};
+
+static bool
+decode_rta_metrics(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ decode_nlattr(tcp, addr, len, rtnl_rta_metrics_attrs,
+ "RTAX_???", rta_metrics_nla_decoders,
+ ARRAY_SIZE(rta_metrics_nla_decoders), opaque_data);
+
+ return true;
+}
+
+static bool
+decode_rta_multipath(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data);
+
+static bool
+decode_rta_cacheinfo(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ struct rta_cacheinfo ci;
+
+ if (len < sizeof(ci))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &ci)) {
+ PRINT_FIELD_U("{", ci, rta_clntref);
+ PRINT_FIELD_U(", ", ci, rta_lastuse);
+ PRINT_FIELD_U(", ", ci, rta_expires);
+ PRINT_FIELD_U(", ", ci, rta_error);
+ PRINT_FIELD_U(", ", ci, rta_used);
+ PRINT_FIELD_X(", ", ci, rta_id);
+ PRINT_FIELD_U(", ", ci, rta_ts);
+ PRINT_FIELD_U(", ", ci, rta_tsage);
+ tprints("}");
+ }
+
+ return true;
+}
+
+static bool
+decode_rta_mfc_stats(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+#ifdef HAVE_STRUCT_RTA_MFC_STATS
+ struct rta_mfc_stats mfcs;
+
+ if (len < sizeof(mfcs))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &mfcs)) {
+ PRINT_FIELD_U("{", mfcs, mfcs_packets);
+ PRINT_FIELD_U(", ", mfcs, mfcs_bytes);
+ PRINT_FIELD_U(", ", mfcs, mfcs_wrong_if);
+ tprints("}");
+ }
+
+ return true;
+#else
+ return false;
+#endif
+}
+
+static bool
+decode_rtvia(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+#ifdef HAVE_STRUCT_RTVIA
+ struct rtvia via;
+
+ if (len < sizeof(via))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &via)) {
+ PRINT_FIELD_XVAL("{", via, rtvia_family, addrfams, "AF_???");
+
+ const unsigned int offset = offsetof(struct rtvia, rtvia_addr);
+
+ if (len > offset) {
+ tprints(", ");
+ decode_inet_addr(tcp, addr + offset, len - offset,
+ via.rtvia_family, "rtvia_addr");
+ }
+ tprints("}");
+ }
+
+ return true;
+#else
+ return false;
+#endif
+}
+
+static bool
+decode_rta_encap_type(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ uint16_t type;
+
+ if (len < sizeof(type))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &type))
+ printxval(lwtunnel_encap_types, type, "LWTUNNEL_ENCAP_???");
+
+ return true;
+}
+
+static const nla_decoder_t rtmsg_nla_decoders[] = {
+ [RTA_DST] = decode_route_addr,
+ [RTA_SRC] = decode_route_addr,
+ [RTA_IIF] = decode_nla_ifindex,
+ [RTA_OIF] = decode_nla_ifindex,
+ [RTA_GATEWAY] = decode_route_addr,
+ [RTA_PRIORITY] = decode_nla_u32,
+ [RTA_PREFSRC] = decode_route_addr,
+ [RTA_METRICS] = decode_rta_metrics,
+ [RTA_MULTIPATH] = decode_rta_multipath,
+ [RTA_PROTOINFO] = decode_nla_u32,
+ [RTA_FLOW] = decode_nla_u32,
+ [RTA_CACHEINFO] = decode_rta_cacheinfo,
+ [RTA_SESSION] = NULL, /* unused */
+ [RTA_MP_ALGO] = decode_nla_u32,
+ [RTA_TABLE] = decode_nla_rt_class,
+ [RTA_MARK] = decode_nla_u32,
+ [RTA_MFC_STATS] = decode_rta_mfc_stats,
+ [RTA_VIA] = decode_rtvia,
+ [RTA_NEWDST] = decode_route_addr,
+ [RTA_PREF] = decode_nla_u8,
+ [RTA_ENCAP_TYPE] = decode_rta_encap_type,
+ [RTA_ENCAP] = NULL, /* unimplemented */
+ [RTA_EXPIRES] = decode_nla_u64,
+ [RTA_PAD] = NULL,
+ [RTA_UID] = decode_nla_u32,
+ [RTA_TTL_PROPAGATE] = decode_nla_u8
+};
+
+static bool
+decode_rta_multipath(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ struct rtnexthop nh;
+
+ if (len < sizeof(nh))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &nh)) {
+ /* print the whole structure regardless of its rtnh_len */
+ PRINT_FIELD_U("{", nh, rtnh_len);
+ PRINT_FIELD_FLAGS(", ", nh, rtnh_flags,
+ route_nexthop_flags, "RTNH_F_???");
+ PRINT_FIELD_U(", ", nh, rtnh_hops);
+ PRINT_FIELD_IFINDEX(", ", nh, rtnh_ifindex);
+ tprints("}");
+
+ const unsigned short rtnh_len =
+ len < nh.rtnh_len ? len : nh.rtnh_len;
+ const size_t offset = RTNH_ALIGN(sizeof(nh));
+ if (rtnh_len > offset) {
+ tprints(", ");
+ decode_nlattr(tcp, addr + offset, rtnh_len - offset,
+ rtnl_route_attrs, "RTA_???",
+ rtmsg_nla_decoders,
+ ARRAY_SIZE(rtmsg_nla_decoders),
+ opaque_data);
+ }
+ }
+
+ return true;
+}
DECL_NETLINK_ROUTE_DECODER(decode_rtmsg)
{
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
- rtnl_route_attrs, "RTA_???", NULL, 0, NULL);
+ rtnl_route_attrs, "RTA_???",
+ rtmsg_nla_decoders,
+ ARRAY_SIZE(rtmsg_nla_decoders), &rtmsg);
}
}
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