X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fofp-parse.c;h=c171293c77e133c7fcf2461d10cb736992b51b06;hb=299016266ed13376a7d671f66d4e0181b41098e3;hp=3fac4749c0106924a21ffd936f65bb51ded29743;hpb=685a51a5b89750cead1b2934c2079d2bb9c52a4a;p=sliver-openvswitch.git diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c index 3fac4749c..c171293c7 100644 --- a/lib/ofp-parse.c +++ b/lib/ofp-parse.c @@ -22,6 +22,8 @@ #include #include +#include "autopath.h" +#include "bundle.h" #include "byte-order.h" #include "dynamic-string.h" #include "netdev.h" @@ -43,7 +45,7 @@ str_to_u32(const char *str) char *tail; uint32_t value; - if (!str) { + if (!str[0]) { ovs_fatal(0, "missing required numeric argument"); } @@ -61,6 +63,10 @@ str_to_u64(const char *str) char *tail; uint64_t value; + if (!str[0]) { + ovs_fatal(0, "missing required numeric argument"); + } + errno = 0; value = strtoull(str, &tail, 0); if (errno == EINVAL || errno == ERANGE || *tail) { @@ -78,6 +84,27 @@ str_to_mac(const char *str, uint8_t mac[6]) } } +static void +str_to_eth_dst(const char *str, + uint8_t mac[ETH_ADDR_LEN], uint8_t mask[ETH_ADDR_LEN]) +{ + if (sscanf(str, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT, + ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask)) + == ETH_ADDR_SCAN_COUNT * 2) { + if (!flow_wildcards_is_dl_dst_mask_valid(mask)) { + ovs_fatal(0, "%s: invalid Ethernet destination mask (only " + "00:00:00:00:00:00, 01:00:00:00:00:00, " + "fe:ff:ff:ff:ff:ff, and ff:ff:ff:ff:ff:ff are allowed)", + str); + } + } else if (sscanf(str, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) + == ETH_ADDR_SCAN_COUNT) { + memset(mask, 0xff, ETH_ADDR_LEN); + } else { + ovs_fatal(0, "invalid mac address %s", str); + } +} + static void str_to_ip(const char *str_, ovs_be32 *ip, ovs_be32 *maskp) { @@ -157,6 +184,35 @@ error: ovs_fatal(0, "%s: bad syntax for tunnel id", str); } +static void +str_to_vlan_tci(const char *str, ovs_be16 *vlan_tcip, ovs_be16 *maskp) +{ + uint16_t vlan_tci, mask; + char *tail; + + errno = 0; + vlan_tci = strtol(str, &tail, 0); + if (errno || (*tail != '\0' && *tail != '/')) { + goto error; + } + + if (*tail == '/') { + mask = strtol(tail + 1, &tail, 0); + if (errno || *tail != '\0') { + goto error; + } + } else { + mask = UINT16_MAX; + } + + *vlan_tcip = htons(vlan_tci); + *maskp = htons(mask); + return; + +error: + ovs_fatal(0, "%s: bad syntax for vlan_tci", str); +} + static void str_to_ipv6(const char *str_, struct in6_addr *addrp, struct in6_addr *maskp) { @@ -229,7 +285,6 @@ put_dl_addr_action(struct ofpbuf *b, uint16_t type, const char *addr) str_to_mac(addr, oada->dl_addr); } - static bool parse_port_name(const char *name, uint16_t *port) { @@ -261,6 +316,40 @@ parse_port_name(const char *name, uint16_t *port) return false; } +static void +parse_resubmit(struct nx_action_resubmit *nar, char *arg) +{ + char *in_port_s, *table_s; + uint16_t in_port; + uint8_t table; + + in_port_s = strsep(&arg, ","); + if (in_port_s && in_port_s[0]) { + if (!parse_port_name(in_port_s, &in_port)) { + in_port = str_to_u32(in_port_s); + } + } else { + in_port = OFPP_IN_PORT; + } + + table_s = strsep(&arg, ","); + table = table_s && table_s[0] ? str_to_u32(table_s) : 255; + + if (in_port == OFPP_IN_PORT && table == 255) { + ovs_fatal(0, "at least one \"in_port\" or \"table\" must be specified " + " on resubmit"); + } + + nar->vendor = htonl(NX_VENDOR_ID); + nar->in_port = htons(in_port); + if (in_port != OFPP_IN_PORT && table == 255) { + nar->subtype = htons(NXAST_RESUBMIT); + } else { + nar->subtype = htons(NXAST_RESUBMIT_TABLE); + nar->table = table; + } +} + static void str_to_action(char *str, struct ofpbuf *b) { @@ -271,6 +360,7 @@ str_to_action(char *str, struct ofpbuf *b) pos = str; n_actions = 0; for (;;) { + char empty_string[] = ""; char *act, *arg; size_t actlen; uint16_t port; @@ -320,7 +410,7 @@ str_to_action(char *str, struct ofpbuf *b) pos = arg + arglen; } else { /* There might be no argument at all. */ - arg = NULL; + arg = empty_string; pos = act + actlen + (act[actlen] != '\0'); } act[actlen] = '\0'; @@ -364,9 +454,7 @@ str_to_action(char *str, struct ofpbuf *b) } else if (!strcasecmp(act, "resubmit")) { struct nx_action_resubmit *nar; nar = put_action(b, sizeof *nar, OFPAT_VENDOR); - nar->vendor = htonl(NX_VENDOR_ID); - nar->subtype = htons(NXAST_RESUBMIT); - nar->in_port = htons(str_to_u32(arg)); + parse_resubmit(nar, arg); } else if (!strcasecmp(act, "set_tunnel") || !strcasecmp(act, "set_tunnel64")) { uint64_t tun_id = str_to_u64(arg); @@ -383,11 +471,6 @@ str_to_action(char *str, struct ofpbuf *b) nast->subtype = htons(NXAST_SET_TUNNEL); nast->tun_id = htonl(tun_id); } - } else if (!strcasecmp(act, "drop_spoofed_arp")) { - struct nx_action_header *nah; - nah = put_action(b, sizeof *nah, OFPAT_VENDOR); - nah->vendor = htonl(NX_VENDOR_ID); - nah->subtype = htons(NXAST_DROP_SPOOFED_ARP); } else if (!strcasecmp(act, "set_queue")) { struct nx_action_set_queue *nasq; nasq = put_action(b, sizeof *nasq, OFPAT_VENDOR); @@ -410,7 +493,7 @@ str_to_action(char *str, struct ofpbuf *b) nan->subtype = htons(NXAST_NOTE); b->size -= sizeof nan->note; - while (arg && *arg != '\0') { + while (*arg != '\0') { uint8_t byte; bool ok; @@ -435,6 +518,7 @@ str_to_action(char *str, struct ofpbuf *b) if (remainder) { ofpbuf_put_zeros(b, OFP_ACTION_ALIGN - remainder); } + nan = (struct nx_action_note *)((char *)b->data + start_ofs); nan->len = htons(b->size - start_ofs); } else if (!strcasecmp(act, "move")) { struct nx_action_reg_move *move; @@ -448,6 +532,14 @@ str_to_action(char *str, struct ofpbuf *b) struct nx_action_multipath *nam; nam = ofpbuf_put_uninit(b, sizeof *nam); multipath_parse(nam, arg); + } else if (!strcasecmp(act, "autopath")) { + struct nx_action_autopath *naa; + naa = ofpbuf_put_uninit(b, sizeof *naa); + autopath_parse(naa, arg); + } else if (!strcasecmp(act, "bundle")) { + bundle_parse(b, arg); + } else if (!strcasecmp(act, "bundle_load")) { + bundle_parse_load(b, arg); } else if (!strcasecmp(act, "output")) { put_output_action(b, str_to_u32(arg)); } else if (!strcasecmp(act, "enqueue")) { @@ -472,7 +564,7 @@ str_to_action(char *str, struct ofpbuf *b) /* Unless a numeric argument is specified, we send the whole * packet to the controller. */ - if (arg && (strspn(arg, "0123456789") == strlen(arg))) { + if (arg[0] && (strspn(arg, "0123456789") == strlen(arg))) { oao->max_len = htons(str_to_u32(arg)); } else { oao->max_len = htons(UINT16_MAX); @@ -526,8 +618,9 @@ parse_protocol(const char *name, const struct protocol **p_out) FIELD(F_IN_PORT, "in_port", FWW_IN_PORT) \ FIELD(F_DL_VLAN, "dl_vlan", 0) \ FIELD(F_DL_VLAN_PCP, "dl_vlan_pcp", 0) \ + FIELD(F_VLAN_TCI, "vlan_tci", 0) \ FIELD(F_DL_SRC, "dl_src", FWW_DL_SRC) \ - FIELD(F_DL_DST, "dl_dst", FWW_DL_DST) \ + FIELD(F_DL_DST, "dl_dst", FWW_DL_DST | FWW_ETH_MCAST) \ FIELD(F_DL_TYPE, "dl_type", FWW_DL_TYPE) \ FIELD(F_NW_SRC, "nw_src", 0) \ FIELD(F_NW_DST, "nw_dst", 0) \ @@ -558,6 +651,19 @@ struct field { flow_wildcards_t wildcard; /* FWW_* bit. */ }; +static void +ofp_fatal(const char *flow, bool verbose, const char *format, ...) +{ + va_list args; + + if (verbose) { + fprintf(stderr, "%s:\n", flow); + } + + va_start(args, format); + ovs_fatal_valist(0, format, args); +} + static bool parse_field_name(const char *name, const struct field **f_out) { @@ -582,9 +688,10 @@ static void parse_field_value(struct cls_rule *rule, enum field_index index, const char *value) { - uint8_t mac[ETH_ADDR_LEN]; + uint8_t mac[ETH_ADDR_LEN], mac_mask[ETH_ADDR_LEN]; ovs_be64 tun_id, tun_mask; ovs_be32 ip, mask; + ovs_be16 tci, tci_mask; struct in6_addr ipv6, ipv6_mask; uint16_t port_no; @@ -598,9 +705,6 @@ parse_field_value(struct cls_rule *rule, enum field_index index, if (!parse_port_name(value, &port_no)) { port_no = atoi(value); } - if (port_no == OFPP_LOCAL) { - port_no = ODPP_LOCAL; - } cls_rule_set_in_port(rule, port_no); break; @@ -612,14 +716,19 @@ parse_field_value(struct cls_rule *rule, enum field_index index, cls_rule_set_dl_vlan_pcp(rule, str_to_u32(value)); break; + case F_VLAN_TCI: + str_to_vlan_tci(value, &tci, &tci_mask); + cls_rule_set_dl_tci_masked(rule, tci, tci_mask); + break; + case F_DL_SRC: str_to_mac(value, mac); cls_rule_set_dl_src(rule, mac); break; case F_DL_DST: - str_to_mac(value, mac); - cls_rule_set_dl_dst(rule, mac); + str_to_eth_dst(value, mac, mac_mask); + cls_rule_set_dl_dst_masked(rule, mac, mac_mask); break; case F_DL_TYPE: @@ -718,44 +827,87 @@ parse_reg_value(struct cls_rule *rule, int reg_idx, const char *value) } } -/* Convert 'string' (as described in the Flow Syntax section of the ovs-ofctl - * man page) into 'pf'. If 'actions' is specified, an action must be in - * 'string' and may be expanded or reallocated. */ -static void -parse_ofp_str(struct flow_mod *fm, uint8_t *table_idx, - struct ofpbuf *actions, char *string) +/* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man + * page) into 'fm' for sending the specified flow_mod 'command' to a switch. + * If 'actions' is specified, an action must be in 'string' and may be expanded + * or reallocated. + * + * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_* + * constant for 'command'. To parse syntax for an OFPST_FLOW or + * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'. */ +void +parse_ofp_str(struct flow_mod *fm, int command, const char *str_, bool verbose) { + enum { + F_OUT_PORT = 1 << 0, + F_ACTIONS = 1 << 1, + F_COOKIE = 1 << 2, + F_TIMEOUT = 1 << 3, + F_PRIORITY = 1 << 4 + } fields; + char *string = xstrdup(str_); char *save_ptr = NULL; char *name; - if (table_idx) { - *table_idx = 0xff; + switch (command) { + case -1: + fields = F_OUT_PORT; + break; + + case OFPFC_ADD: + fields = F_ACTIONS | F_COOKIE | F_TIMEOUT | F_PRIORITY; + break; + + case OFPFC_DELETE: + fields = F_OUT_PORT; + break; + + case OFPFC_DELETE_STRICT: + fields = F_OUT_PORT | F_PRIORITY; + break; + + case OFPFC_MODIFY: + fields = F_ACTIONS | F_COOKIE; + break; + + case OFPFC_MODIFY_STRICT: + fields = F_ACTIONS | F_COOKIE | F_PRIORITY; + break; + + default: + NOT_REACHED(); } + cls_rule_init_catchall(&fm->cr, OFP_DEFAULT_PRIORITY); fm->cookie = htonll(0); - fm->command = UINT16_MAX; + fm->table_id = 0xff; + fm->command = command; fm->idle_timeout = OFP_FLOW_PERMANENT; fm->hard_timeout = OFP_FLOW_PERMANENT; fm->buffer_id = UINT32_MAX; fm->out_port = OFPP_NONE; fm->flags = 0; - if (actions) { - char *act_str = strstr(string, "action"); + if (fields & F_ACTIONS) { + struct ofpbuf actions; + char *act_str; + + act_str = strstr(string, "action"); if (!act_str) { - ovs_fatal(0, "must specify an action"); + ofp_fatal(str_, verbose, "must specify an action"); } *act_str = '\0'; act_str = strchr(act_str + 1, '='); if (!act_str) { - ovs_fatal(0, "must specify an action"); + ofp_fatal(str_, verbose, "must specify an action"); } act_str++; - str_to_action(act_str, actions); - fm->actions = actions->data; - fm->n_actions = actions->size / sizeof(union ofp_action); + ofpbuf_init(&actions, sizeof(union ofp_action)); + str_to_action(act_str, &actions); + fm->actions = ofpbuf_steal_data(&actions); + fm->n_actions = actions.size / sizeof(union ofp_action); } else { fm->actions = NULL; fm->n_actions = 0; @@ -775,20 +927,20 @@ parse_ofp_str(struct flow_mod *fm, uint8_t *table_idx, value = strtok_r(NULL, ", \t\r\n", &save_ptr); if (!value) { - ovs_fatal(0, "field %s missing value", name); + ofp_fatal(str_, verbose, "field %s missing value", name); } - if (table_idx && !strcmp(name, "table")) { - *table_idx = atoi(value); + if (!strcmp(name, "table")) { + fm->table_id = atoi(value); } else if (!strcmp(name, "out_port")) { fm->out_port = atoi(value); - } else if (!strcmp(name, "priority")) { + } else if (fields & F_PRIORITY && !strcmp(name, "priority")) { fm->cr.priority = atoi(value); - } else if (!strcmp(name, "idle_timeout")) { + } else if (fields & F_TIMEOUT && !strcmp(name, "idle_timeout")) { fm->idle_timeout = atoi(value); - } else if (!strcmp(name, "hard_timeout")) { + } else if (fields & F_TIMEOUT && !strcmp(name, "hard_timeout")) { fm->hard_timeout = atoi(value); - } else if (!strcmp(name, "cookie")) { + } else if (fields & F_COOKIE && !strcmp(name, "cookie")) { fm->cookie = htonll(str_to_u64(value)); } else if (parse_field_name(name, &f)) { if (!strcmp(value, "*") || !strcmp(value, "ANY")) { @@ -815,17 +967,29 @@ parse_ofp_str(struct flow_mod *fm, uint8_t *table_idx, } else { parse_field_value(&fm->cr, f->index, value); } - } else if (!strncmp(name, "reg", 3) && isdigit(name[3])) { + } else if (!strncmp(name, "reg", 3) + && isdigit((unsigned char) name[3])) { unsigned int reg_idx = atoi(name + 3); if (reg_idx >= FLOW_N_REGS) { - ovs_fatal(0, "only %d registers supported", FLOW_N_REGS); + if (verbose) { + fprintf(stderr, "%s:\n", str_); + } + ofp_fatal(str_, verbose, "only %d registers supported", FLOW_N_REGS); } parse_reg_value(&fm->cr, reg_idx, value); + } else if (!strcmp(name, "duration") + || !strcmp(name, "n_packets") + || !strcmp(name, "n_bytes")) { + /* Ignore these, so that users can feed the output of + * "ovs-ofctl dump-flows" back into commands that parse + * flows. */ } else { - ovs_fatal(0, "unknown keyword %s", name); + ofp_fatal(str_, verbose, "unknown keyword %s", name); } } } + + free(string); } /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command' @@ -836,19 +1000,19 @@ parse_ofp_str(struct flow_mod *fm, uint8_t *table_idx, * flow. */ void parse_ofp_flow_mod_str(struct list *packets, enum nx_flow_format *cur_format, - char *string, uint16_t command) + bool *flow_mod_table_id, char *string, uint16_t command, + bool verbose) { - bool is_del = command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT; enum nx_flow_format min_format, next_format; + struct cls_rule rule_copy; struct ofpbuf actions; struct ofpbuf *ofm; struct flow_mod fm; ofpbuf_init(&actions, 64); - parse_ofp_str(&fm, NULL, is_del ? NULL : &actions, string); - fm.command = command; + parse_ofp_str(&fm, command, string, verbose); - min_format = ofputil_min_flow_format(&fm.cr, true, fm.cookie); + min_format = ofputil_min_flow_format(&fm.cr); next_format = MAX(*cur_format, min_format); if (next_format != *cur_format) { struct ofpbuf *sff = ofputil_make_set_flow_format(next_format); @@ -856,7 +1020,19 @@ parse_ofp_flow_mod_str(struct list *packets, enum nx_flow_format *cur_format, *cur_format = next_format; } - ofm = ofputil_encode_flow_mod(&fm, *cur_format); + /* Normalize a copy of the rule. This ensures that non-normalized flows + * get logged but doesn't affect what gets sent to the switch, so that the + * switch can do whatever it likes with the flow. */ + rule_copy = fm.cr; + ofputil_normalize_rule(&rule_copy, next_format); + + if (fm.table_id != 0xff && !*flow_mod_table_id) { + struct ofpbuf *sff = ofputil_make_flow_mod_table_id(true); + list_push_back(packets, &sff->list_node); + *flow_mod_table_id = true; + } + + ofm = ofputil_encode_flow_mod(&fm, *cur_format, *flow_mod_table_id); list_push_back(packets, &ofm->list_node); ofpbuf_uninit(&actions); @@ -866,30 +1042,18 @@ parse_ofp_flow_mod_str(struct list *packets, enum nx_flow_format *cur_format, * 'stream' and the command is always OFPFC_ADD. Returns false if end-of-file * is reached before reading a flow, otherwise true. */ bool -parse_ofp_add_flow_file(struct list *packets, enum nx_flow_format *cur, - FILE *stream) +parse_ofp_flow_mod_file(struct list *packets, + enum nx_flow_format *cur, bool *flow_mod_table_id, + FILE *stream, uint16_t command) { - struct ds s = DS_EMPTY_INITIALIZER; - bool ok = false; - - while (!ds_get_line(&s, stream)) { - char *line = ds_cstr(&s); - char *comment; - - /* Delete comments. */ - comment = strchr(line, '#'); - if (comment) { - *comment = '\0'; - } - - /* Drop empty lines. */ - if (line[strspn(line, " \t\n")] == '\0') { - continue; - } - - parse_ofp_flow_mod_str(packets, cur, line, OFPFC_ADD); - ok = true; - break; + struct ds s; + bool ok; + + ds_init(&s); + ok = ds_get_preprocessed_line(&s, stream) == 0; + if (ok) { + parse_ofp_flow_mod_str(packets, cur, flow_mod_table_id, + ds_cstr(&s), command, true); } ds_destroy(&s); @@ -901,12 +1065,10 @@ parse_ofp_flow_stats_request_str(struct flow_stats_request *fsr, bool aggregate, char *string) { struct flow_mod fm; - uint8_t table_id; - parse_ofp_str(&fm, &table_id, NULL, string); + parse_ofp_str(&fm, -1, string, false); fsr->aggregate = aggregate; fsr->match = fm.cr; fsr->out_port = fm.out_port; - fsr->table_id = table_id; + fsr->table_id = fm.table_id; } -