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rtnl_link: decode named constants for IFLA_XDP_ATTACHED attribute value

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* xlat/rtnl_ifla_xdp_attached_mode.in: New file.
* rtnl_link.c: Include "xlat/rtnl_ifla_xdp_attached_mode.h".
(decode_ifla_xdp_attached): New function.
(ifla_xdp_nla_decoders) <[IFLA_XDP_ATTACHED]>: Use
decode_ifla_xdp_attached instead of decode_nla_u8.
* tests/nlattr_ifla_xdp.c: Add checks for IFLA_XDP_ATTACHED decoding.
This commit is contained in:
Eugene Syromyatnikov 2018-08-19 11:31:34 +02:00 committed by Dmitry V. Levin
parent eded21f5c0
commit d029a5efd1
3 changed files with 55 additions and 1 deletions
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20
rtnl_link.c
View File

@ -54,6 +54,7 @@
#include "xlat/rtnl_ifla_info_data_tun_attrs.h"
#include "xlat/rtnl_ifla_port_attrs.h"
#include "xlat/rtnl_ifla_vf_port_attrs.h"
#include "xlat/rtnl_ifla_xdp_attached_mode.h"
#include "xlat/rtnl_ifla_xdp_attrs.h"
#include "xlat/rtnl_link_attrs.h"
#include "xlat/snmp_icmp6_stats.h"
@ -574,9 +575,26 @@ decode_ifla_xdp_flags(struct tcb *const tcp,
return true;
}
bool
decode_ifla_xdp_attached(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const struct decode_nla_xlat_opts opts = {
.xlat = rtnl_ifla_xdp_attached_mode,
.xlat_size = ARRAY_SIZE(rtnl_ifla_xdp_attached_mode),
.xt = XT_INDEXED,
.dflt = "XDP_ATTACHED_???",
.size = 1,
};
return decode_nla_xval(tcp, addr, len, &opts);
}
static const nla_decoder_t ifla_xdp_nla_decoders[] = {
[IFLA_XDP_FD] = decode_nla_fd,
[IFLA_XDP_ATTACHED] = decode_nla_u8,
[IFLA_XDP_ATTACHED] = decode_ifla_xdp_attached,
[IFLA_XDP_FLAGS] = decode_ifla_xdp_flags,
[IFLA_XDP_PROG_ID] = decode_nla_u32,
[IFLA_XDP_DRV_PROG_ID] = decode_nla_u32,

30
tests/nlattr_ifla_xdp.c
View File

@ -44,6 +44,10 @@ enum { IFLA_XDP = 43 };
# define IFLA_XDP_FD 1
#endif
#ifndef IFLA_XDP_ATTACHED
# define IFLA_XDP_ATTACHED 2
#endif
#ifndef IFLA_XDP_PROG_ID
# define IFLA_XDP_PROG_ID 4
#endif
@ -60,6 +64,14 @@ enum { IFLA_XDP = 43 };
# define IFLA_XDP_HW_PROG_ID 7
#endif
#ifndef XDP_ATTACHED_NONE
# define XDP_ATTACHED_NONE 0
#endif
#ifndef XDP_ATTACHED_MULTI
# define XDP_ATTACHED_MULTI 4
#endif
#define IFLA_ATTR IFLA_XDP
#include "nlattr_ifla.h"
@ -81,6 +93,24 @@ main(void)
IFLA_XDP_FD, pattern, num,
printf("%d", num));
static const struct {
uint8_t val;
const char *str;
} attach_types[] = {
{ ARG_STR(XDP_ATTACHED_NONE) },
{ ARG_STR(XDP_ATTACHED_MULTI) },
{ ARG_STR(0x5) " /* XDP_ATTACHED_??? */" },
{ ARG_STR(0xfe) " /* XDP_ATTACHED_??? */" },
};
for (size_t i = 0; i < ARRAY_SIZE(attach_types); i++) {
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ifinfomsg, print_ifinfomsg,
IFLA_XDP_ATTACHED, pattern,
attach_types[i].val,
printf("%s", attach_types[i].str));
}
#ifdef XDP_FLAGS_UPDATE_IF_NOEXIST
const uint32_t flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,

6
xlat/rtnl_ifla_xdp_attached_mode.in Normal file
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@ -0,0 +1,6 @@
#value_indexed
XDP_ATTACHED_NONE 0
XDP_ATTACHED_DRV 1
XDP_ATTACHED_SKB 2
XDP_ATTACHED_HW 3
XDP_ATTACHED_MULTI 4