| /* |
| * Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr> |
| * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com> |
| * Copyright (c) 2017 The strace developers. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "defs.h" |
| #include "netlink.h" |
| #include "nlattr.h" |
| #include "print_fields.h" |
| |
| #include <arpa/inet.h> |
| #include <linux/inet_diag.h> |
| #include <linux/netlink_diag.h> |
| #include <linux/packet_diag.h> |
| #ifdef AF_SMC |
| # include <linux/smc_diag.h> |
| #endif |
| #include <linux/sock_diag.h> |
| #include <linux/unix_diag.h> |
| |
| #include "xlat/inet_diag_attrs.h" |
| #include "xlat/inet_diag_extended_flags.h" |
| #include "xlat/inet_diag_req_attrs.h" |
| |
| #include "xlat/tcp_states.h" |
| #include "xlat/tcp_state_flags.h" |
| |
| #include "xlat/netlink_diag_attrs.h" |
| #include "xlat/netlink_diag_show.h" |
| #include "xlat/netlink_socket_flags.h" |
| #include "xlat/netlink_states.h" |
| |
| #include "xlat/packet_diag_attrs.h" |
| #include "xlat/packet_diag_show.h" |
| |
| #ifdef AF_SMC |
| # include "xlat/smc_diag_attrs.h" |
| # include "xlat/smc_diag_extended_flags.h" |
| # include "xlat/smc_states.h" |
| #endif |
| |
| #include "xlat/unix_diag_attrs.h" |
| #include "xlat/unix_diag_show.h" |
| |
| static void |
| decode_family(struct tcb *const tcp, const uint8_t family, |
| const kernel_ulong_t addr, const kernel_ulong_t len) |
| { |
| tprints("{family="); |
| printxval(addrfams, family, "AF_???"); |
| if (len > sizeof(family)) { |
| tprints(", "); |
| printstrn(tcp, addr + sizeof(family), |
| len - sizeof(family)); |
| } |
| tprints("}"); |
| } |
| |
| static void |
| decode_unix_diag_req(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct unix_diag_req req = { .sdiag_family = family }; |
| const size_t offset = sizeof(req.sdiag_family); |
| |
| PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???"); |
| tprints(", "); |
| if (len >= sizeof(req)) { |
| if (!umoven_or_printaddr(tcp, addr + offset, |
| sizeof(req) - offset, |
| (void *) &req + offset)) { |
| PRINT_FIELD_U("", req, sdiag_protocol); |
| PRINT_FIELD_FLAGS(", ", req, udiag_states, |
| tcp_state_flags, "1<<TCP_???"); |
| PRINT_FIELD_U(", ", req, udiag_ino); |
| PRINT_FIELD_FLAGS(", ", req, udiag_show, |
| unix_diag_show, "UDIAG_SHOW_???"); |
| PRINT_FIELD_COOKIE(", ", req, udiag_cookie); |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| } |
| |
| static bool |
| print_meminfo(struct tcb *const tcp, |
| void *const elem_buf, |
| const size_t elem_size, |
| void *const opaque_data) |
| { |
| tprintf("%" PRIu32, *(uint32_t *) elem_buf); |
| |
| return true; |
| } |
| |
| static bool |
| decode_meminfo(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| uint32_t mem; |
| size_t nmemb = len / sizeof(mem); |
| |
| if (!nmemb) |
| return false; |
| |
| if (nmemb > SK_MEMINFO_VARS) |
| nmemb = SK_MEMINFO_VARS; |
| |
| print_array(tcp, addr, nmemb, &mem, sizeof(mem), |
| umoven_or_printaddr, print_meminfo, 0); |
| |
| return true; |
| } |
| |
| static bool |
| decode_unix_diag_vfs(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct unix_diag_vfs uv; |
| |
| if (len < sizeof(uv)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &uv)) |
| return true; |
| |
| tprints("{udiag_vfs_dev="); |
| print_dev_t(uv.udiag_vfs_dev); |
| PRINT_FIELD_U(", ", uv, udiag_vfs_ino); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static bool |
| print_inode(struct tcb *const tcp, |
| void *const elem_buf, |
| const size_t elem_size, |
| void *const opaque_data) |
| { |
| tprintf("%" PRIu32, *(uint32_t *) elem_buf); |
| |
| return true; |
| } |
| |
| static bool |
| decode_unix_diag_inode(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| uint32_t inode; |
| const size_t nmemb = len / sizeof(inode); |
| |
| if (!nmemb) |
| return false; |
| |
| print_array(tcp, addr, nmemb, &inode, sizeof(inode), |
| umoven_or_printaddr, print_inode, 0); |
| |
| return true; |
| } |
| |
| static bool |
| decode_unix_diag_rqlen(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct unix_diag_rqlen rql; |
| |
| if (len < sizeof(rql)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &rql)) |
| return true; |
| |
| PRINT_FIELD_U("{", rql, udiag_rqueue); |
| PRINT_FIELD_U(", ", rql, udiag_wqueue); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static const nla_decoder_t unix_diag_msg_nla_decoders[] = { |
| [UNIX_DIAG_NAME] = decode_nla_str, |
| [UNIX_DIAG_VFS] = decode_unix_diag_vfs, |
| [UNIX_DIAG_PEER] = decode_nla_u32, |
| [UNIX_DIAG_ICONS] = decode_unix_diag_inode, |
| [UNIX_DIAG_RQLEN] = decode_unix_diag_rqlen, |
| [UNIX_DIAG_MEMINFO] = decode_meminfo, |
| [UNIX_DIAG_SHUTDOWN] = decode_nla_u8 |
| }; |
| |
| static void |
| decode_unix_diag_msg(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct unix_diag_msg msg = { .udiag_family = family }; |
| size_t offset = sizeof(msg.udiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", msg, udiag_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, udiag_type, |
| socktypes, "SOCK_???"); |
| PRINT_FIELD_XVAL(", ", msg, udiag_state, |
| tcp_states, "TCP_???"); |
| PRINT_FIELD_U(", ", msg, udiag_ino); |
| PRINT_FIELD_COOKIE(", ", msg, udiag_cookie); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLMSG_ALIGN(sizeof(msg)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| unix_diag_attrs, "UNIX_DIAG_???", |
| unix_diag_msg_nla_decoders, |
| ARRAY_SIZE(unix_diag_msg_nla_decoders), NULL); |
| } |
| } |
| |
| static void |
| decode_netlink_diag_req(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct netlink_diag_req req = { .sdiag_family = family }; |
| const size_t offset = sizeof(req.sdiag_family); |
| |
| PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???"); |
| tprints(", "); |
| if (len >= sizeof(req)) { |
| if (!umoven_or_printaddr(tcp, addr + offset, |
| sizeof(req) - offset, |
| (void *) &req + offset)) { |
| if (NDIAG_PROTO_ALL == req.sdiag_protocol) |
| tprintf("%s=%s", |
| "sdiag_protocol", "NDIAG_PROTO_ALL"); |
| else |
| PRINT_FIELD_XVAL("", req, sdiag_protocol, |
| netlink_protocols, |
| "NETLINK_???"); |
| PRINT_FIELD_U(", ", req, ndiag_ino); |
| PRINT_FIELD_FLAGS(", ", req, ndiag_show, |
| netlink_diag_show, "NDIAG_SHOW_???"); |
| PRINT_FIELD_COOKIE(", ", req, ndiag_cookie); |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| } |
| |
| static bool |
| print_group(struct tcb *const tcp, |
| void *const elem_buf, |
| const size_t elem_size, |
| void *const opaque_data) |
| { |
| if (elem_size < sizeof(kernel_ulong_t)) |
| tprintf("%#0*x", (int) elem_size * 2 + 2, |
| *(unsigned int *) elem_buf); |
| else |
| tprintf("%#0*" PRI_klx, (int) elem_size * 2 + 2, |
| *(kernel_ulong_t *) elem_buf); |
| |
| return true; |
| } |
| |
| static bool |
| decode_netlink_diag_groups(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| kernel_ulong_t buf; |
| const size_t nmemb = len / current_wordsize; |
| |
| if (!nmemb) |
| return false; |
| |
| print_array(tcp, addr, nmemb, &buf, current_wordsize, |
| umoven_or_printaddr, print_group, 0); |
| |
| return true; |
| } |
| |
| static bool |
| decode_netlink_diag_ring(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct netlink_diag_ring ndr; |
| |
| if (len < sizeof(ndr)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &ndr)) |
| return true; |
| |
| PRINT_FIELD_U("{", ndr, ndr_block_size); |
| PRINT_FIELD_U(", ", ndr, ndr_block_nr); |
| PRINT_FIELD_U(", ", ndr, ndr_frame_size); |
| PRINT_FIELD_U(", ", ndr, ndr_frame_nr); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static bool |
| decode_netlink_diag_flags(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| uint32_t flags; |
| |
| if (len < sizeof(flags)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &flags)) |
| return true; |
| |
| printflags(netlink_socket_flags, flags, "NDIAG_FLAG_???"); |
| |
| return true; |
| } |
| |
| static const nla_decoder_t netlink_diag_msg_nla_decoders[] = { |
| [NETLINK_DIAG_MEMINFO] = decode_meminfo, |
| [NETLINK_DIAG_GROUPS] = decode_netlink_diag_groups, |
| [NETLINK_DIAG_RX_RING] = decode_netlink_diag_ring, |
| [NETLINK_DIAG_TX_RING] = decode_netlink_diag_ring, |
| [NETLINK_DIAG_FLAGS] = decode_netlink_diag_flags |
| }; |
| |
| static void |
| decode_netlink_diag_msg(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct netlink_diag_msg msg = { .ndiag_family = family }; |
| size_t offset = sizeof(msg.ndiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", msg, ndiag_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, ndiag_type, |
| socktypes, "SOCK_???"); |
| PRINT_FIELD_XVAL(", ", msg, ndiag_protocol, |
| netlink_protocols, "NETLINK_???"); |
| PRINT_FIELD_XVAL(", ", msg, ndiag_state, |
| netlink_states, "NETLINK_???"); |
| PRINT_FIELD_U(", ", msg, ndiag_portid); |
| PRINT_FIELD_U(", ", msg, ndiag_dst_portid); |
| PRINT_FIELD_U(", ", msg, ndiag_dst_group); |
| PRINT_FIELD_U(", ", msg, ndiag_ino); |
| PRINT_FIELD_COOKIE(", ", msg, ndiag_cookie); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLA_ALIGN(sizeof(msg)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| netlink_diag_attrs, "NETLINK_DIAG_???", |
| netlink_diag_msg_nla_decoders, |
| ARRAY_SIZE(netlink_diag_msg_nla_decoders), NULL); |
| } |
| } |
| |
| static void |
| decode_packet_diag_req(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct packet_diag_req req = { .sdiag_family = family }; |
| const size_t offset = sizeof(req.sdiag_family); |
| |
| PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???"); |
| tprints(", "); |
| if (len >= sizeof(req)) { |
| if (!umoven_or_printaddr(tcp, addr + offset, |
| sizeof(req) - offset, |
| (void *) &req + offset)) { |
| PRINT_FIELD_XVAL("", req, sdiag_protocol, |
| ethernet_protocols, "ETH_P_???"); |
| PRINT_FIELD_U(", ", req, pdiag_ino); |
| PRINT_FIELD_FLAGS(", ", req, pdiag_show, |
| packet_diag_show, "PACKET_SHOW_???"); |
| PRINT_FIELD_COOKIE(", ", req, pdiag_cookie); |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| } |
| |
| static void |
| decode_packet_diag_msg(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct packet_diag_msg msg = { .pdiag_family = family }; |
| size_t offset = sizeof(msg.pdiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", msg, pdiag_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, pdiag_type, |
| socktypes, "SOCK_???"); |
| PRINT_FIELD_U(", ", msg, pdiag_num); |
| PRINT_FIELD_U(", ", msg, pdiag_ino); |
| PRINT_FIELD_COOKIE(", ", msg, pdiag_cookie); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLA_ALIGN(sizeof(msg)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| packet_diag_attrs, "PACKET_DIAG_???", |
| NULL, 0, NULL); |
| } |
| } |
| |
| static void |
| print_inet_diag_sockid(const struct inet_diag_sockid *id, const uint8_t family) |
| { |
| tprintf("{idiag_sport=htons(%u), idiag_dport=htons(%u)", |
| ntohs(id->idiag_sport), ntohs(id->idiag_dport)); |
| |
| tprints(", "); |
| print_inet_addr(family, id->idiag_src, |
| sizeof(id->idiag_src), "idiag_src"); |
| tprints(", "); |
| print_inet_addr(family, id->idiag_dst, |
| sizeof(id->idiag_dst), "idiag_dst"); |
| |
| tprints(", idiag_if="); |
| print_ifindex(id->idiag_if); |
| |
| PRINT_FIELD_COOKIE(", ", *id, idiag_cookie); |
| |
| tprints("}"); |
| } |
| |
| static void |
| decode_inet_diag_req_compat(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct inet_diag_req req = { .idiag_family = family }; |
| size_t offset = sizeof(req.idiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", req, idiag_family, addrfams, "AF_???"); |
| tprints(", "); |
| if (len >= sizeof(req)) { |
| if (!umoven_or_printaddr(tcp, addr + offset, |
| sizeof(req) - offset, |
| (void *) &req + offset)) { |
| PRINT_FIELD_U("", req, idiag_src_len); |
| PRINT_FIELD_U(", ", req, idiag_dst_len); |
| PRINT_FIELD_FLAGS(", ", req, idiag_ext, |
| inet_diag_extended_flags, |
| "1<<INET_DIAG_\?\?\?-1"); |
| tprints(", id="); |
| print_inet_diag_sockid(&req.id, req.idiag_family); |
| PRINT_FIELD_FLAGS(", ", req, idiag_states, |
| tcp_state_flags, "1<<TCP_???"); |
| PRINT_FIELD_U(", ", req, idiag_dbs); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLA_ALIGN(sizeof(req)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| inet_diag_req_attrs, "INET_DIAG_REQ_???", |
| NULL, 0, NULL); |
| } |
| } |
| |
| static void |
| decode_inet_diag_req_v2(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct inet_diag_req_v2 req = { .sdiag_family = family }; |
| size_t offset = sizeof(req.sdiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???"); |
| tprints(", "); |
| if (len >= sizeof(req)) { |
| if (!umoven_or_printaddr(tcp, addr + offset, |
| sizeof(req) - offset, |
| (void *) &req + offset)) { |
| PRINT_FIELD_XVAL("", req, sdiag_protocol, |
| inet_protocols, "IPPROTO_???"); |
| PRINT_FIELD_FLAGS(", ", req, idiag_ext, |
| inet_diag_extended_flags, |
| "1<<INET_DIAG_\?\?\?-1"); |
| PRINT_FIELD_FLAGS(", ", req, idiag_states, |
| tcp_state_flags, "1<<TCP_???"); |
| tprints(", id="); |
| print_inet_diag_sockid(&req.id, req.sdiag_family); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLA_ALIGN(sizeof(req)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| inet_diag_req_attrs, "INET_DIAG_REQ_???", |
| NULL, 0, NULL); |
| } |
| } |
| |
| static void |
| decode_inet_diag_req(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| if (nlmsghdr->nlmsg_type == TCPDIAG_GETSOCK |
| || nlmsghdr->nlmsg_type == DCCPDIAG_GETSOCK) |
| return decode_inet_diag_req_compat(tcp, nlmsghdr, |
| family, addr, len); |
| else |
| return decode_inet_diag_req_v2(tcp, nlmsghdr, |
| family, addr, len); |
| } |
| |
| static bool |
| decode_inet_diag_meminfo(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct inet_diag_meminfo minfo; |
| |
| if (len < sizeof(minfo)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &minfo)) |
| return true; |
| |
| PRINT_FIELD_U("{", minfo, idiag_rmem); |
| PRINT_FIELD_U(", ", minfo, idiag_wmem); |
| PRINT_FIELD_U(", ", minfo, idiag_fmem); |
| PRINT_FIELD_U(", ", minfo, idiag_tmem); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static bool |
| decode_tcpvegas_info(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct tcpvegas_info vegas; |
| |
| if (len < sizeof(vegas)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &vegas)) |
| return true; |
| |
| PRINT_FIELD_U("{", vegas, tcpv_enabled); |
| PRINT_FIELD_U(", ", vegas, tcpv_rttcnt); |
| PRINT_FIELD_U(", ", vegas, tcpv_rtt); |
| PRINT_FIELD_U(", ", vegas, tcpv_minrtt); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static bool |
| decode_tcp_dctcp_info(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct tcp_dctcp_info dctcp; |
| |
| if (len < sizeof(dctcp)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &dctcp)) |
| return true; |
| |
| PRINT_FIELD_U("{", dctcp, dctcp_enabled); |
| PRINT_FIELD_U(", ", dctcp, dctcp_ce_state); |
| PRINT_FIELD_U(", ", dctcp, dctcp_alpha); |
| PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn); |
| PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static bool |
| decode_tcp_bbr_info(struct tcb *const tcp, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len, |
| const void *const opaque_data) |
| { |
| struct tcp_bbr_info bbr; |
| |
| if (len < sizeof(bbr)) |
| return false; |
| if (umove_or_printaddr(tcp, addr, &bbr)) |
| return true; |
| |
| PRINT_FIELD_X("{", bbr, bbr_bw_lo); |
| PRINT_FIELD_X(", ", bbr, bbr_bw_hi); |
| PRINT_FIELD_U(", ", bbr, bbr_min_rtt); |
| PRINT_FIELD_U(", ", bbr, bbr_pacing_gain); |
| PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain); |
| tprints("}"); |
| |
| return true; |
| } |
| |
| static const nla_decoder_t inet_diag_msg_nla_decoders[] = { |
| [INET_DIAG_MEMINFO] = decode_inet_diag_meminfo, |
| [INET_DIAG_INFO] = NULL, /* unimplemented */ |
| [INET_DIAG_VEGASINFO] = decode_tcpvegas_info, |
| [INET_DIAG_CONG] = decode_nla_str, |
| [INET_DIAG_TOS] = decode_nla_u8, |
| [INET_DIAG_TCLASS] = decode_nla_u8, |
| [INET_DIAG_SKMEMINFO] = decode_meminfo, |
| [INET_DIAG_SHUTDOWN] = decode_nla_u8, |
| [INET_DIAG_DCTCPINFO] = decode_tcp_dctcp_info, |
| [INET_DIAG_PROTOCOL] = decode_nla_u8, |
| [INET_DIAG_SKV6ONLY] = decode_nla_u8, |
| [INET_DIAG_LOCALS] = NULL, /* unimplemented */ |
| [INET_DIAG_PEERS] = NULL, /* unimplemented */ |
| [INET_DIAG_PAD] = NULL, |
| [INET_DIAG_MARK] = decode_nla_u32, |
| [INET_DIAG_BBRINFO] = decode_tcp_bbr_info |
| }; |
| |
| static void |
| decode_inet_diag_msg(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| struct inet_diag_msg msg = { .idiag_family = family }; |
| size_t offset = sizeof(msg.idiag_family); |
| bool decode_nla = false; |
| |
| PRINT_FIELD_XVAL("{", msg, idiag_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, idiag_state, |
| tcp_states, "TCP_???"); |
| PRINT_FIELD_U(", ", msg, idiag_timer); |
| PRINT_FIELD_U(", ", msg, idiag_retrans); |
| tprints(", id="); |
| print_inet_diag_sockid(&msg.id, msg.idiag_family); |
| PRINT_FIELD_U(", ", msg, idiag_expires); |
| PRINT_FIELD_U(", ", msg, idiag_rqueue); |
| PRINT_FIELD_U(", ", msg, idiag_wqueue); |
| PRINT_FIELD_U(", ", msg, idiag_uid); |
| PRINT_FIELD_U(", ", msg, idiag_inode); |
| decode_nla = true; |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| |
| offset = NLA_ALIGN(sizeof(msg)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| inet_diag_attrs, "INET_DIAG_???", |
| inet_diag_msg_nla_decoders, |
| ARRAY_SIZE(inet_diag_msg_nla_decoders), NULL); |
| } |
| } |
| |
| #ifdef AF_SMC |
| static void |
| decode_smc_diag_req(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| 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"); |
| tprints(", id="); |
| /* |
| * AF_SMC protocol family socket handler |
| * keeping the AF_INET sock address. |
| */ |
| print_inet_diag_sockid(&req.id, AF_INET); |
| } |
| } else |
| tprints("..."); |
| tprints("}"); |
| } |
| |
| static void |
| decode_smc_diag_msg(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const uint8_t family, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| 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_U(", ", msg, diag_fallback); |
| PRINT_FIELD_U(", ", msg, diag_shutdown); |
| tprints(", id="); |
| /* |
| * AF_SMC protocol family socket handler |
| * keeping the AF_INET sock address. |
| */ |
| print_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 = NLA_ALIGN(sizeof(msg)); |
| if (decode_nla && len > offset) { |
| tprints(", "); |
| decode_nlattr(tcp, addr + offset, len - offset, |
| smc_diag_attrs, "SMC_DIAG_???", |
| NULL, 0, NULL); |
| } |
| } |
| #endif |
| |
| typedef void (*netlink_diag_decoder_t)(struct tcb *, |
| const struct nlmsghdr *, |
| uint8_t family, |
| kernel_ulong_t addr, |
| kernel_ulong_t len); |
| |
| static const struct { |
| const netlink_diag_decoder_t request, response; |
| } diag_decoders[] = { |
| [AF_INET] = { decode_inet_diag_req, decode_inet_diag_msg }, |
| [AF_INET6] = { decode_inet_diag_req, decode_inet_diag_msg }, |
| [AF_NETLINK] = { decode_netlink_diag_req, decode_netlink_diag_msg }, |
| [AF_PACKET] = { decode_packet_diag_req, decode_packet_diag_msg }, |
| #ifdef AF_SMC |
| [AF_SMC] = { decode_smc_diag_req, decode_smc_diag_msg }, |
| #endif |
| [AF_UNIX] = { decode_unix_diag_req, decode_unix_diag_msg } |
| }; |
| |
| bool |
| decode_netlink_sock_diag(struct tcb *const tcp, |
| const struct nlmsghdr *const nlmsghdr, |
| const kernel_ulong_t addr, |
| const kernel_ulong_t len) |
| { |
| uint8_t family; |
| |
| if (nlmsghdr->nlmsg_type == NLMSG_DONE) |
| return false; |
| |
| if (!umove_or_printaddr(tcp, addr, &family)) { |
| if (family < ARRAY_SIZE(diag_decoders) |
| && len > sizeof(family)) { |
| const netlink_diag_decoder_t decoder = |
| (nlmsghdr->nlmsg_flags & NLM_F_REQUEST) |
| ? diag_decoders[family].request |
| : diag_decoders[family].response; |
| |
| if (decoder) { |
| decoder(tcp, nlmsghdr, family, addr, len); |
| return true; |
| } |
| } |
| |
| decode_family(tcp, family, addr, len); |
| } |
| |
| return true; |
| } |