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264 lines
7.7 KiB
264 lines
7.7 KiB
/*
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2017-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include <sys/socket.h>
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#ifndef AF_SMC
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# define XLAT_MACROS_ONLY
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# include "xlat/addrfams.h"
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# undef XLAT_MACROS_ONLY
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#endif
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#include "netlink.h"
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#include "netlink_sock_diag.h"
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#include "nlattr.h"
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#include "print_fields.h"
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#include <arpa/inet.h>
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#include <linux/smc_diag.h>
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#include "xlat/smc_decl_codes.h"
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#include "xlat/smc_diag_attrs.h"
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#include "xlat/smc_diag_extended_flags.h"
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#include "xlat/smc_diag_mode.h"
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#include "xlat/smc_link_group_roles.h"
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#include "xlat/smc_states.h"
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#include "xlat/sock_shutdown_flags.h"
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DECL_NETLINK_DIAG_DECODER(decode_smc_diag_req)
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{
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struct smc_diag_req req = { .diag_family = family };
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const size_t offset = sizeof(req.diag_family);
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PRINT_FIELD_XVAL("{", req, diag_family, addrfams, "AF_???");
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tprints(", ");
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if (len >= sizeof(req)) {
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if (!umoven_or_printaddr(tcp, addr + offset,
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sizeof(req) - offset,
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(void *) &req + offset)) {
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PRINT_FIELD_FLAGS("", req, diag_ext,
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smc_diag_extended_flags,
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"1<<SMC_DIAG_\?\?\?-1");
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/*
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* AF_SMC protocol family socket handler
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* keeping the AF_INET sock address.
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*/
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PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id, AF_INET);
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}
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} else
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tprints("...");
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tprints("}");
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}
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static void
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print_smc_diag_cursor(const struct smc_diag_cursor *const cursor)
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{
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PRINT_FIELD_U("{", *cursor, reserved);
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PRINT_FIELD_U(", ", *cursor, wrap);
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PRINT_FIELD_U(", ", *cursor, count);
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tprints("}");
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}
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# define PRINT_FIELD_SMC_DIAG_CURSOR(prefix_, where_, field_) \
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do { \
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tprintf("%s%s=", (prefix_), #field_); \
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print_smc_diag_cursor(&(where_).field_); \
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} while (0)
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static bool
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decode_smc_diag_conninfo(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct smc_diag_conninfo cinfo;
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if (len < sizeof(cinfo))
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return false;
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if (umove_or_printaddr(tcp, addr, &cinfo))
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return true;
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PRINT_FIELD_U("{", cinfo, token);
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PRINT_FIELD_U(", ", cinfo, sndbuf_size);
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PRINT_FIELD_U(", ", cinfo, rmbe_size);
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PRINT_FIELD_U(", ", cinfo, peer_rmbe_size);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_prod);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_cons);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prod);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_cons);
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PRINT_FIELD_0X(", ", cinfo, rx_prod_flags);
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PRINT_FIELD_0X(", ", cinfo, rx_conn_state_flags);
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PRINT_FIELD_0X(", ", cinfo, tx_prod_flags);
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PRINT_FIELD_0X(", ", cinfo, tx_conn_state_flags);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prep);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_sent);
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PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_fin);
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tprints("}");
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return true;
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}
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static bool
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decode_smc_diag_lgrinfo(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct smc_diag_lgrinfo linfo;
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if (len < sizeof(linfo))
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return false;
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if (umove_or_printaddr(tcp, addr, &linfo))
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return true;
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tprints("{lnk[0]={");
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PRINT_FIELD_U("", linfo.lnk[0], link_id);
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PRINT_FIELD_CSTRING(", ", linfo.lnk[0], ibname);
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PRINT_FIELD_U(", ", linfo.lnk[0], ibport);
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PRINT_FIELD_CSTRING(", ", linfo.lnk[0], gid);
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PRINT_FIELD_CSTRING(", ", linfo.lnk[0], peer_gid);
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PRINT_FIELD_XVAL("}, ", linfo, role, smc_link_group_roles, "SMC_???");
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tprints("}");
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return true;
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}
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static bool
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decode_smc_diag_shutdown(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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const struct decode_nla_xlat_opts opts = {
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ARRSZ_PAIR(sock_shutdown_flags), "???_SHUTDOWN",
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.size = 1,
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};
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return decode_nla_flags(tcp, addr, len, &opts);
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}
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static bool
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decode_smc_diag_dmbinfo(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct smcd_diag_dmbinfo dinfo;
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if (len < sizeof(dinfo))
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return false;
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if (umove_or_printaddr(tcp, addr, &dinfo))
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return true;
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PRINT_FIELD_U("{", dinfo, linkid);
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PRINT_FIELD_X(", ", dinfo, peer_gid);
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PRINT_FIELD_X(", ", dinfo, my_gid);
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PRINT_FIELD_X(", ", dinfo, token);
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PRINT_FIELD_X(", ", dinfo, peer_token);
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tprints("}");
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return true;
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}
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static bool
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decode_smc_diag_fallback(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct smc_diag_fallback fb;
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if (len < sizeof(fb))
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return false;
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if (umove_or_printaddr(tcp, addr, &fb))
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return true;
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/*
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* We print them verbose since they are defined in a non-UAPI header,
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* net/smc/smc_clc.h
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*/
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tprints("{reason=");
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printxval_search_ex(smc_decl_codes, fb.reason,
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"SMC_CLC_DECL_???", XLAT_STYLE_VERBOSE);
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tprints(", peer_diagnosis=");
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printxval_search_ex(smc_decl_codes, fb.peer_diagnosis,
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"SMC_CLC_DECL_???", XLAT_STYLE_VERBOSE);
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tprints("}");
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return true;
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}
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static const nla_decoder_t smc_diag_msg_nla_decoders[] = {
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[SMC_DIAG_CONNINFO] = decode_smc_diag_conninfo,
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[SMC_DIAG_LGRINFO] = decode_smc_diag_lgrinfo,
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[SMC_DIAG_SHUTDOWN] = decode_smc_diag_shutdown,
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[SMC_DIAG_DMBINFO] = decode_smc_diag_dmbinfo,
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[SMC_DIAG_FALLBACK] = decode_smc_diag_fallback,
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};
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DECL_NETLINK_DIAG_DECODER(decode_smc_diag_msg)
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{
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struct smc_diag_msg msg = { .diag_family = family };
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size_t offset = sizeof(msg.diag_family);
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bool decode_nla = false;
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PRINT_FIELD_XVAL("{", msg, diag_family, addrfams, "AF_???");
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tprints(", ");
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if (len >= sizeof(msg)) {
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if (!umoven_or_printaddr(tcp, addr + offset,
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sizeof(msg) - offset,
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(void *) &msg + offset)) {
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PRINT_FIELD_XVAL("", msg, diag_state,
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smc_states, "SMC_???");
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PRINT_FIELD_XVAL_INDEX(", ", msg, diag_fallback,
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smc_diag_mode,
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"SMC_DIAG_MODE_???");
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PRINT_FIELD_U(", ", msg, diag_shutdown);
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/*
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* AF_SMC protocol family socket handler
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* keeping the AF_INET sock address.
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*/
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PRINT_FIELD_INET_DIAG_SOCKID(", ", msg, id, AF_INET);
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PRINT_FIELD_U(", ", msg, diag_uid);
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PRINT_FIELD_U(", ", msg, diag_inode);
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decode_nla = true;
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}
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} else
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tprints("...");
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tprints("}");
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offset = NLMSG_ALIGN(sizeof(msg));
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if (decode_nla && len > offset) {
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tprints(", ");
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decode_nlattr(tcp, addr + offset, len - offset,
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smc_diag_attrs, "SMC_DIAG_???",
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smc_diag_msg_nla_decoders,
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ARRAY_SIZE(smc_diag_msg_nla_decoders), NULL);
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}
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}
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