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/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#include <sys/socket.h>
#ifndef AF_SMC
# define XLAT_MACROS_ONLY
# include "xlat/addrfams.h"
# undef XLAT_MACROS_ONLY
#endif
#include "netlink.h"
#include "netlink_sock_diag.h"
#include "nlattr.h"
#include "print_fields.h"
#include <arpa/inet.h>
#include <linux/smc_diag.h>
#include "xlat/smc_decl_codes.h"
#include "xlat/smc_diag_attrs.h"
#include "xlat/smc_diag_extended_flags.h"
#include "xlat/smc_diag_mode.h"
#include "xlat/smc_link_group_roles.h"
#include "xlat/smc_states.h"
#include "xlat/sock_shutdown_flags.h"
DECL_NETLINK_DIAG_DECODER(decode_smc_diag_req)
{
struct smc_diag_req req = { .diag_family = family };
const size_t offset = sizeof(req.diag_family);
PRINT_FIELD_XVAL("{", req, diag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_FLAGS("", req, diag_ext,
smc_diag_extended_flags,
"1<<SMC_DIAG_\?\?\?-1");
/*
* AF_SMC protocol family socket handler
* keeping the AF_INET sock address.
*/
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id, AF_INET);
}
} else
tprints("...");
tprints("}");
}
static void
print_smc_diag_cursor(const struct smc_diag_cursor *const cursor)
{
PRINT_FIELD_U("{", *cursor, reserved);
PRINT_FIELD_U(", ", *cursor, wrap);
PRINT_FIELD_U(", ", *cursor, count);
tprints("}");
}
#define PRINT_FIELD_SMC_DIAG_CURSOR(prefix_, where_, field_) \
do { \
tprintf("%s%s=", (prefix_), #field_); \
print_smc_diag_cursor(&(where_).field_); \
} while (0)
static bool
decode_smc_diag_conninfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smc_diag_conninfo cinfo;
if (len < sizeof(cinfo))
return false;
if (umove_or_printaddr(tcp, addr, &cinfo))
return true;
PRINT_FIELD_U("{", cinfo, token);
PRINT_FIELD_U(", ", cinfo, sndbuf_size);
PRINT_FIELD_U(", ", cinfo, rmbe_size);
PRINT_FIELD_U(", ", cinfo, peer_rmbe_size);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_prod);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_cons);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prod);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_cons);
PRINT_FIELD_0X(", ", cinfo, rx_prod_flags);
PRINT_FIELD_0X(", ", cinfo, rx_conn_state_flags);
PRINT_FIELD_0X(", ", cinfo, tx_prod_flags);
PRINT_FIELD_0X(", ", cinfo, tx_conn_state_flags);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prep);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_sent);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_fin);
tprints("}");
return true;
}
static bool
decode_smc_diag_lgrinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smc_diag_lgrinfo linfo;
if (len < sizeof(linfo))
return false;
if (umove_or_printaddr(tcp, addr, &linfo))
return true;
tprints("{lnk[0]={");
PRINT_FIELD_U("", linfo.lnk[0], link_id);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], ibname);
PRINT_FIELD_U(", ", linfo.lnk[0], ibport);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], gid);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], peer_gid);
PRINT_FIELD_XVAL("}, ", linfo, role, smc_link_group_roles, "SMC_???");
tprints("}");
return true;
}
static bool
decode_smc_diag_shutdown(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 = {
sock_shutdown_flags, "???_SHUTDOWN",
.size = 1,
};
return decode_nla_flags(tcp, addr, len, &opts);
}
static bool
decode_smc_diag_dmbinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smcd_diag_dmbinfo dinfo;
if (len < sizeof(dinfo))
return false;
if (umove_or_printaddr(tcp, addr, &dinfo))
return true;
PRINT_FIELD_U("{", dinfo, linkid);
PRINT_FIELD_X(", ", dinfo, peer_gid);
PRINT_FIELD_X(", ", dinfo, my_gid);
PRINT_FIELD_X(", ", dinfo, token);
PRINT_FIELD_X(", ", dinfo, peer_token);
tprints("}");
return true;
}
static bool
decode_smc_diag_fallback(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smc_diag_fallback fb;
if (len < sizeof(fb))
return false;
if (umove_or_printaddr(tcp, addr, &fb))
return true;
/*
* We print them verbose since they are defined in a non-UAPI header,
* net/smc/smc_clc.h
*/
tprints("{reason=");
printxval_ex(smc_decl_codes, fb.reason, "SMC_CLC_DECL_???",
XLAT_STYLE_VERBOSE);
tprints(", peer_diagnosis=");
printxval_ex(smc_decl_codes, fb.peer_diagnosis, "SMC_CLC_DECL_???",
XLAT_STYLE_VERBOSE);
tprints("}");
return true;
}
static const nla_decoder_t smc_diag_msg_nla_decoders[] = {
[SMC_DIAG_CONNINFO] = decode_smc_diag_conninfo,
[SMC_DIAG_LGRINFO] = decode_smc_diag_lgrinfo,
[SMC_DIAG_SHUTDOWN] = decode_smc_diag_shutdown,
[SMC_DIAG_DMBINFO] = decode_smc_diag_dmbinfo,
[SMC_DIAG_FALLBACK] = decode_smc_diag_fallback,
};
DECL_NETLINK_DIAG_DECODER(decode_smc_diag_msg)
{
struct smc_diag_msg msg = { .diag_family = family };
size_t offset = sizeof(msg.diag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, diag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, diag_state,
smc_states, "SMC_???");
PRINT_FIELD_XVAL(", ", msg, diag_fallback,
smc_diag_mode, "SMC_DIAG_MODE_???");
PRINT_FIELD_U(", ", msg, diag_shutdown);
/*
* AF_SMC protocol family socket handler
* keeping the AF_INET sock address.
*/
PRINT_FIELD_INET_DIAG_SOCKID(", ", msg, id, AF_INET);
PRINT_FIELD_U(", ", msg, diag_uid);
PRINT_FIELD_U(", ", msg, diag_inode);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
smc_diag_attrs, "SMC_DIAG_???",
smc_diag_msg_nla_decoders,
ARRAY_SIZE(smc_diag_msg_nla_decoders), NULL);
}
}
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