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netlink: add basic decoding of NETLINK_ROUTE rtmsg attributes

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* rtnl_route.c: Include "nlattr.h" and "xlat/rtnl_route_attrs.h".
(decode_rtmsg): Call decode_nlattr.
* xlat/rtnl_route_attrs.in: New file.

Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
This commit is contained in:
JingPiao Chen 2017-08-15 12:41:12 +08:00 committed by Dmitry V. Levin
parent ea9d07f0bf
commit 955b69cb79
2 changed files with 39 additions and 1 deletions
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13
rtnl_route.c
View File

@ -29,6 +29,7 @@
#include "defs.h"
#include "netlink_route.h"
#include "nlattr.h"
#include "print_fields.h"
#include <linux/ip.h>
@ -40,11 +41,13 @@
#include "xlat/routing_protocols.h"
#include "xlat/routing_table_ids.h"
#include "xlat/routing_types.h"
#include "xlat/rtnl_route_attrs.h"
DECL_NETLINK_ROUTE_DECODER(decode_rtmsg)
{
struct rtmsg rtmsg = { .rtm_family = family };
const size_t offset = sizeof(rtmsg.rtm_family);
size_t offset = sizeof(rtmsg.rtm_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", rtmsg, rtm_family, addrfams, "AF_???");
@ -67,8 +70,16 @@ DECL_NETLINK_ROUTE_DECODER(decode_rtmsg)
routing_types, "RTN_???");
PRINT_FIELD_FLAGS(", ", rtmsg, rtm_flags,
routing_flags, "RTM_F_???");
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(rtmsg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_route_attrs, "RTA_???", NULL, 0, NULL);
}
}

27
xlat/rtnl_route_attrs.in Normal file
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@ -0,0 +1,27 @@
RTA_UNSPEC 0
RTA_DST 1
RTA_SRC 2
RTA_IIF 3
RTA_OIF 4
RTA_GATEWAY 5
RTA_PRIORITY 6
RTA_PREFSRC 7
RTA_METRICS 8
RTA_MULTIPATH 9
RTA_PROTOINFO 10
RTA_FLOW 11
RTA_CACHEINFO 12
RTA_SESSION 13
RTA_MP_ALGO 14
RTA_TABLE 15
RTA_MARK 16
RTA_MFC_STATS 17
RTA_VIA 18
RTA_NEWDST 19
RTA_PREF 20
RTA_ENCAP_TYPE 21
RTA_ENCAP 22
RTA_EXPIRES 23
RTA_PAD 24
RTA_UID 25
RTA_TTL_PROPAGATE 26