From 7a5b320b5bb5ec45b21839005e8538172908fb57 Mon Sep 17 00:00:00 2001 From: Micael Karlberg Date: Thu, 19 Jul 2018 16:39:13 +0200 Subject: [socket-nif] Add (partial) support for socket (level sctp) option associnfo Added support for the SCTP option ASSOCINFO. This option is a bit tricky. As the underlying structure (sctp_assocparams) contains the assoc_id, it begs the question what happens if this option is fetched for: * The own assoc (which means that we might have the assoc id in the descriptor and can initiate that part of the struct accordningly). * Another assoc: From assoc A asks for info with assoc_id set to that of assoc B. * The "owning" endpoint. * Another endpoint (an endpoint to which the assoc does not belong). So, if the user calls socket:[getopt|setopt] for an association socket, shall we require that the assoc_id field is set to -1? Or not set at all and therefor filled in automatically by the nif-code? And, if the user calls socket:[getopt|setopt] for an endpoint socket, shall we require that the assoc_id field is set to a valid id? Or shall it not be allowed? Questions, questions... OTP-14831 --- erts/emulator/nifs/common/socket_int.h | 1 + erts/emulator/nifs/common/socket_nif.c | 224 ++++++++++++++++++++++++++++++++- 2 files changed, 224 insertions(+), 1 deletion(-) (limited to 'erts/emulator') diff --git a/erts/emulator/nifs/common/socket_int.h b/erts/emulator/nifs/common/socket_int.h index 67e4baba27..28f42a7345 100644 --- a/erts/emulator/nifs/common/socket_int.h +++ b/erts/emulator/nifs/common/socket_int.h @@ -167,6 +167,7 @@ extern ERL_NIF_TERM esock_atom_einval; #define MKT8(E,E1,E2,E3,E4,E5,E6,E7,E8) \ enif_make_tuple8((E), (E1), (E2), (E3), (E4), (E5), (E6), (E7), (E8)) #define MKTA(E, A, AL) enif_make_tuple_from_array((E), (A), (AL)) +#define MKUI(E,I) enif_make_uint((E), (I)) #define MCREATE(N) enif_mutex_create((N)) #define MDESTROY(M) enif_mutex_destroy((M)) diff --git a/erts/emulator/nifs/common/socket_nif.c b/erts/emulator/nifs/common/socket_nif.c index 2a60a840c8..50e7ec5f5e 100644 --- a/erts/emulator/nifs/common/socket_nif.c +++ b/erts/emulator/nifs/common/socket_nif.c @@ -542,6 +542,7 @@ typedef union { #define SOCKET_OPT_UDP_CORK 1 +#define SOCKET_OPT_SCTP_ASSOCINFO 2 #define SOCKET_OPT_SCTP_AUTOCLOSE 8 #define SOCKET_OPT_SCTP_DISABLE_FRAGMENTS 12 #define SOCKET_OPT_SCTP_EVENTS 14 @@ -1212,6 +1213,11 @@ static ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env, SocketDescriptor* descP, int eOpt, ERL_NIF_TERM eVal); +#if defined(SCTP_ASSOCINFO) +static ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal); +#endif #if defined(SCTP_AUTOCLOSE) static ERL_NIF_TERM nsetopt_lvl_sctp_autoclose(ErlNifEnv* env, SocketDescriptor* descP, @@ -1435,6 +1441,10 @@ static ERL_NIF_TERM ngetopt_lvl_udp_cork(ErlNifEnv* env, static ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env, SocketDescriptor* descP, int eOpt); +#if defined(SCTP_ASSOCINFO) +static ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP); +#endif #if defined(SCTP_AUTOCLOSE) static ERL_NIF_TERM ngetopt_lvl_sctp_autoclose(ErlNifEnv* env, SocketDescriptor* descP); @@ -1780,11 +1790,13 @@ static const struct in6_addr in6addr_loopback = static char str_adaptation_layer[] = "adaptation_layer"; static char str_address[] = "address"; static char str_association[] = "association"; +static char str_assoc_id[] = "assoc_id"; static char str_authentication[] = "authentication"; // static char str_any[] = "any"; static char str_close[] = "close"; static char str_closed[] = "closed"; static char str_closing[] = "closing"; +static char str_cookie_life[] = "cookie_life"; static char str_data_in[] = "data_in"; static char str_do[] = "do"; static char str_dont[] = "dont"; @@ -1794,12 +1806,15 @@ static char str_in4_sockaddr[] = "in4_sockaddr"; static char str_in6_sockaddr[] = "in6_sockaddr"; static char str_iow[] = "iow"; static char str_interface[] = "interface"; +static char str_local_rwnd[] = "local_rwnd"; // static char str_loopback[] = "loopback"; +static char str_max_rxt[] = "max_rxt"; static char str_multiaddr[] = "multiaddr"; static char str_nif_abort[] = "nif_abort"; static char str_num_dlocal[] = "num_domain_local"; static char str_num_dinet[] = "num_domain_inet"; static char str_num_dinet6[] = "num_domain_inet6"; +static char str_num_peer_dests[] = "num_peer_dests"; static char str_num_pip[] = "num_proto_ip"; static char str_num_psctp[] = "num_proto_sctp"; static char str_num_ptcp[] = "num_proto_tcp"; @@ -1810,6 +1825,7 @@ static char str_num_tseqpkgs[] = "num_type_seqpacket"; static char str_num_tstreams[] = "num_type_stream"; static char str_partial_delivery[] = "partial_delivery"; static char str_peer_error[] = "peer_error"; +static char str_peer_rwnd[] = "peer_rwnd"; static char str_probe[] = "probe"; static char str_select[] = "select"; static char str_sender_dry[] = "sender_dry"; @@ -1878,10 +1894,12 @@ ERL_NIF_TERM esock_atom_einval; static ERL_NIF_TERM atom_adaptation_layer; static ERL_NIF_TERM atom_address; static ERL_NIF_TERM atom_association; +static ERL_NIF_TERM atom_assoc_id; static ERL_NIF_TERM atom_authentication; static ERL_NIF_TERM atom_close; static ERL_NIF_TERM atom_closed; static ERL_NIF_TERM atom_closing; +static ERL_NIF_TERM atom_cookie_life; static ERL_NIF_TERM atom_data_in; static ERL_NIF_TERM atom_do; static ERL_NIF_TERM atom_dont; @@ -1891,11 +1909,14 @@ static ERL_NIF_TERM atom_in4_sockaddr; static ERL_NIF_TERM atom_in6_sockaddr; static ERL_NIF_TERM atom_iow; static ERL_NIF_TERM atom_interface; +static ERL_NIF_TERM atom_local_rwnd; +static ERL_NIF_TERM atom_max_rxt; static ERL_NIF_TERM atom_multiaddr; static ERL_NIF_TERM atom_nif_abort; static ERL_NIF_TERM atom_num_dinet; static ERL_NIF_TERM atom_num_dinet6; static ERL_NIF_TERM atom_num_dlocal; +static ERL_NIF_TERM atom_num_peer_dests; static ERL_NIF_TERM atom_num_pip; static ERL_NIF_TERM atom_num_psctp; static ERL_NIF_TERM atom_num_ptcp; @@ -1906,6 +1927,7 @@ static ERL_NIF_TERM atom_num_tseqpkgs; static ERL_NIF_TERM atom_num_tstreams; static ERL_NIF_TERM atom_partial_delivery; static ERL_NIF_TERM atom_peer_error; +static ERL_NIF_TERM atom_peer_rwnd; static ERL_NIF_TERM atom_probe; static ERL_NIF_TERM atom_select; static ERL_NIF_TERM atom_sender_dry; @@ -2042,7 +2064,7 @@ ERL_NIF_TERM nif_info(ErlNifEnv* env, ERL_NIF_TERM vals[] = {BOOL2ATOM(data.dbg), BOOL2ATOM(data.iow), lgcnt}; ERL_NIF_TERM info; unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); - unsigned int numVals = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); ESOCK_ASSERT( (numKeys == numVals) ); @@ -5513,6 +5535,12 @@ ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env, "\r\n", eOpt) ); switch (eOpt) { +#if defined(SCTP_ASSOCINFO) + case SOCKET_OPT_SCTP_ASSOCINFO: + result = nsetopt_lvl_sctp_associnfo(env, descP, eVal); + break; +#endif + #if defined(SCTP_AUTOCLOSE) case SOCKET_OPT_SCTP_AUTOCLOSE: result = nsetopt_lvl_sctp_autoclose(env, descP, eVal); @@ -5546,6 +5574,116 @@ ERL_NIF_TERM nsetopt_lvl_sctp(ErlNifEnv* env, } +/* nsetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option + */ +#if defined(SCTP_ASSOCINFO) +static +ERL_NIF_TERM nsetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP, + ERL_NIF_TERM eVal) +{ + ERL_NIF_TERM result; + ERL_NIF_TERM eAssocId, eMaxRxt, eNumPeerDests; + ERL_NIF_TERM ePeerRWND, eLocalRWND, eCookieLife; + struct sctp_assocparams assocParams; + int res; + size_t sz; + unsigned int tmp; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> entry with" + "\r\n eVal: %T" + "\r\n", eVal) ); + + // It must be a map + if (!IS_MAP(env, eVal)) + return esock_make_error(env, esock_atom_einval); + + // It must have atleast ten attributes + if (!enif_get_map_size(env, eVal, &sz) || (sz < 6)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> extract attributes\r\n") ); + + if (!GET_MAP_VAL(env, eVal, atom_assoc_id, &eAssocId)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_max_rxt, &eMaxRxt)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_num_peer_dests, &eNumPeerDests)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_peer_rwnd, &ePeerRWND)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_local_rwnd, &eLocalRWND)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_MAP_VAL(env, eVal, atom_cookie_life, &eCookieLife)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> decode attributes\r\n") ); + + if (!GET_INT(env, eAssocId, &assocParams.sasoc_assoc_id)) + return esock_make_error(env, esock_atom_einval); + + /* + * We should really make sure this is ok in erlang (to ensure that + * the value fits in 16-bits). + * The value should be a 16-bit unsigned int... + * Both sasoc_asocmaxrxt and sasoc_number_peer_destinations. + */ + + /* + if (!GET_UINT(env, eAssocId, (unsigned int*) &assocParams.sasoc_asocmaxrxt)) + return esock_make_error(env, esock_atom_einval); + */ + if (!GET_UINT(env, eAssocId, &tmp)) + return esock_make_error(env, esock_atom_einval); + assocParams.sasoc_asocmaxrxt = (uint16_t) tmp; + + /* + if (!GET_UINT(env, eAssocId, (unsigned int*) &assocParams.sasoc_number_peer_destinations)) + return esock_make_error(env, esock_atom_einval); + */ + if (!GET_UINT(env, eAssocId, &tmp)) + return esock_make_error(env, esock_atom_einval); + assocParams.sasoc_number_peer_destinations = (uint16_t) tmp; + + if (!GET_UINT(env, eAssocId, &assocParams.sasoc_peer_rwnd)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eAssocId, &assocParams.sasoc_local_rwnd)) + return esock_make_error(env, esock_atom_einval); + + if (!GET_UINT(env, eAssocId, &assocParams.sasoc_cookie_life)) + return esock_make_error(env, esock_atom_einval); + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_events -> set associnfo option\r\n") ); + + res = socket_setopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO, + &assocParams, sizeof(assocParams)); + + if (res != 0) + result = esock_make_error_errno(env, sock_errno()); + else + result = esock_atom_ok; + + SSDBG( descP, + ("SOCKET", "nsetopt_lvl_sctp_associnfo -> done with" + "\r\n result: %T" + "\r\n", result) ); + + return result; + +} +#endif + + /* nsetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option */ #if defined(SCTP_AUTOCLOSE) @@ -7330,7 +7468,18 @@ ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env, { ERL_NIF_TERM result; + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp -> entry with" + "\r\n opt: %d" + "\r\n", eOpt) ); + switch (eOpt) { +#if defined(SCTP_ASSOCINFO) + case SOCKET_OPT_SCTP_ASSOCINFO: + result = ngetopt_lvl_sctp_associnfo(env, descP); + break; +#endif + #if defined(SCTP_AUTOCLOSE) case SOCKET_OPT_SCTP_AUTOCLOSE: result = ngetopt_lvl_sctp_autoclose(env, descP); @@ -7354,10 +7503,77 @@ ERL_NIF_TERM ngetopt_lvl_sctp(ErlNifEnv* env, break; } + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp -> done when" + "\r\n result: %T" + "\r\n", result) ); + return result; } +/* ngetopt_lvl_sctp_associnfo - Level SCTP ASSOCINFO option + * + * + * + * We should really specify which association this relates to, + * as it is now we get assoc-id = 0. If this socket is an + * association (and not an endpoint) then it will have an + * assoc id. But since the sctp support at present is "limited", + * we leave it for now. + * What do we do if this is an endpoint? Invalid op? + * + * + */ +#if defined(SCTP_ASSOCINFO) +static +ERL_NIF_TERM ngetopt_lvl_sctp_associnfo(ErlNifEnv* env, + SocketDescriptor* descP) +{ + ERL_NIF_TERM result; + struct sctp_assocparams val; + SOCKOPTLEN_T valSz = sizeof(val); + int res; + + SSDBG( descP, ("SOCKET", "ngetopt_lvl_sctp_associnfo -> entry\r\n") ); + + sys_memzero((char*) &val, valSz); + res = sock_getopt(descP->sock, IPPROTO_SCTP, SCTP_ASSOCINFO, &val, &valSz); + + if (res != 0) { + result = esock_make_error_errno(env, sock_errno()); + } else { + ERL_NIF_TERM eAssocParams; + ERL_NIF_TERM keys[] = {atom_assoc_id, atom_max_rxt, atom_num_peer_dests, + atom_peer_rwnd, atom_local_rwnd, atom_cookie_life}; + ERL_NIF_TERM vals[] = {MKUI(env, val.sasoc_assoc_id), + MKUI(env, val.sasoc_asocmaxrxt), + MKUI(env, val.sasoc_number_peer_destinations), + MKUI(env, val.sasoc_peer_rwnd), + MKUI(env, val.sasoc_local_rwnd), + MKUI(env, val.sasoc_cookie_life)}; + unsigned int numKeys = sizeof(keys) / sizeof(ERL_NIF_TERM); + unsigned int numVals = sizeof(vals) / sizeof(ERL_NIF_TERM); + + ESOCK_ASSERT( (numKeys == numVals) ); + + if (!MKMA(env, keys, vals, numKeys, &eAssocParams)) + return esock_make_error(env, esock_atom_einval);; + + result = esock_make_ok2(env, eAssocParams); + } + + SSDBG( descP, + ("SOCKET", "ngetopt_lvl_sctp_associnfo -> done with" + "\r\n res: %d" + "\r\n result: %T" + "\r\n", res, result) ); + + return result; +} +#endif + + /* ngetopt_lvl_sctp_autoclose - Level SCTP AUTOCLOSE option */ #if defined(SCTP_AUTOCLOSE) @@ -9610,10 +9826,12 @@ int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) atom_adaptation_layer = MKA(env, str_adaptation_layer); atom_address = MKA(env, str_address); atom_association = MKA(env, str_association); + atom_assoc_id = MKA(env, str_assoc_id); atom_authentication = MKA(env, str_authentication); atom_close = MKA(env, str_close); atom_closed = MKA(env, str_closed); atom_closing = MKA(env, str_closing); + atom_cookie_life = MKA(env, str_cookie_life); atom_data_in = MKA(env, str_data_in); atom_do = MKA(env, str_do); atom_dont = MKA(env, str_dont); @@ -9623,11 +9841,14 @@ int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) atom_in6_sockaddr = MKA(env, str_in6_sockaddr); atom_iow = MKA(env, str_iow); atom_interface = MKA(env, str_interface); + atom_local_rwnd = MKA(env, str_local_rwnd); + atom_max_rxt = MKA(env, str_max_rxt); atom_multiaddr = MKA(env, str_multiaddr); atom_nif_abort = MKA(env, str_nif_abort); atom_num_dinet = MKA(env, str_num_dinet); atom_num_dinet6 = MKA(env, str_num_dinet6); atom_num_dlocal = MKA(env, str_num_dlocal); + atom_num_peer_dests = MKA(env, str_num_peer_dests); atom_num_pip = MKA(env, str_num_pip); atom_num_psctp = MKA(env, str_num_psctp); atom_num_ptcp = MKA(env, str_num_ptcp); @@ -9637,6 +9858,7 @@ int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) atom_num_tseqpkgs = MKA(env, str_num_tseqpkgs); atom_num_tstreams = MKA(env, str_num_tstreams); atom_partial_delivery = MKA(env, str_partial_delivery); + atom_peer_rwnd = MKA(env, str_peer_rwnd); atom_peer_error = MKA(env, str_peer_error); atom_probe = MKA(env, str_probe); atom_select = MKA(env, str_select); -- cgit v1.2.3