/* * f_flower.c Flower Classifier * * This program is free software; you can distribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Authors: Jiri Pirko */ #include #include #include #include #include #include #include #include #include #include #include #include "utils.h" #include "tc_util.h" #include "rt_names.h" enum flower_matching_flags { FLOWER_IP_FLAGS, }; enum flower_endpoint { FLOWER_ENDPOINT_SRC, FLOWER_ENDPOINT_DST }; enum flower_icmp_field { FLOWER_ICMP_FIELD_TYPE, FLOWER_ICMP_FIELD_CODE }; static void explain(void) { fprintf(stderr, "Usage: ... flower [ MATCH-LIST ] [ verbose ]\n" " [ skip_sw | skip_hw ]\n" " [ action ACTION-SPEC ] [ classid CLASSID ]\n" "\n" "Where: MATCH-LIST := [ MATCH-LIST ] MATCH\n" " MATCH := { indev DEV-NAME |\n" " vlan_id VID |\n" " vlan_prio PRIORITY |\n" " vlan_ethtype [ ipv4 | ipv6 | ETH-TYPE ] |\n" " cvlan_id VID |\n" " cvlan_prio PRIORITY |\n" " cvlan_ethtype [ ipv4 | ipv6 | ETH-TYPE ] |\n" " dst_mac MASKED-LLADDR |\n" " src_mac MASKED-LLADDR |\n" " ip_proto [tcp | udp | sctp | icmp | icmpv6 | IP-PROTO ] |\n" " ip_tos MASKED-IP_TOS |\n" " ip_ttl MASKED-IP_TTL |\n" " mpls_label LABEL |\n" " mpls_tc TC |\n" " mpls_bos BOS |\n" " mpls_ttl TTL |\n" " dst_ip PREFIX |\n" " src_ip PREFIX |\n" " dst_port PORT-NUMBER |\n" " src_port PORT-NUMBER |\n" " tcp_flags MASKED-TCP_FLAGS |\n" " type MASKED-ICMP-TYPE |\n" " code MASKED-ICMP-CODE |\n" " arp_tip IPV4-PREFIX |\n" " arp_sip IPV4-PREFIX |\n" " arp_op [ request | reply | OP ] |\n" " arp_tha MASKED-LLADDR |\n" " arp_sha MASKED-LLADDR |\n" " enc_dst_ip [ IPV4-ADDR | IPV6-ADDR ] |\n" " enc_src_ip [ IPV4-ADDR | IPV6-ADDR ] |\n" " enc_key_id [ KEY-ID ] |\n" " enc_tos MASKED-IP_TOS |\n" " enc_ttl MASKED-IP_TTL |\n" " geneve_opts MASKED-OPTIONS |\n" " ip_flags IP-FLAGS | \n" " enc_dst_port [ port_number ] }\n" " FILTERID := X:Y:Z\n" " MASKED_LLADDR := { LLADDR | LLADDR/MASK | LLADDR/BITS }\n" " ACTION-SPEC := ... look at individual actions\n" "\n" "NOTE: CLASSID, IP-PROTO are parsed as hexadecimal input.\n" "NOTE: There can be only used one mask per one prio. If user needs\n" " to specify different mask, he has to use different prio.\n"); } static int flower_parse_eth_addr(char *str, int addr_type, int mask_type, struct nlmsghdr *n) { int ret, err = -1; char addr[ETH_ALEN], *slash; slash = strchr(str, '/'); if (slash) *slash = '\0'; ret = ll_addr_a2n(addr, sizeof(addr), str); if (ret < 0) goto err; addattr_l(n, MAX_MSG, addr_type, addr, sizeof(addr)); if (slash) { unsigned bits; if (!get_unsigned(&bits, slash + 1, 10)) { uint64_t mask; /* Extra 16 bit shift to push mac address into * high bits of uint64_t */ mask = htonll(0xffffffffffffULL << (16 + 48 - bits)); memcpy(addr, &mask, ETH_ALEN); } else { ret = ll_addr_a2n(addr, sizeof(addr), slash + 1); if (ret < 0) goto err; } } else { memset(addr, 0xff, ETH_ALEN); } addattr_l(n, MAX_MSG, mask_type, addr, sizeof(addr)); err = 0; err: if (slash) *slash = '/'; return err; } static bool eth_type_vlan(__be16 ethertype) { return ethertype == htons(ETH_P_8021Q) || ethertype == htons(ETH_P_8021AD); } static int flower_parse_vlan_eth_type(char *str, __be16 eth_type, int type, __be16 *p_vlan_eth_type, struct nlmsghdr *n) { __be16 vlan_eth_type; if (!eth_type_vlan(eth_type)) { fprintf(stderr, "Can't set \"%s\" if ethertype isn't 802.1Q or 802.1AD\n", type == TCA_FLOWER_KEY_VLAN_ETH_TYPE ? "vlan_ethtype" : "cvlan_ethtype"); return -1; } if (ll_proto_a2n(&vlan_eth_type, str)) invarg("invalid vlan_ethtype", str); addattr16(n, MAX_MSG, type, vlan_eth_type); *p_vlan_eth_type = vlan_eth_type; return 0; } struct flag_to_string { int flag; enum flower_matching_flags type; char *string; }; static struct flag_to_string flags_str[] = { { TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOWER_IP_FLAGS, "frag" }, { TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, FLOWER_IP_FLAGS, "firstfrag" }, }; static int flower_parse_matching_flags(char *str, enum flower_matching_flags type, __u32 *mtf, __u32 *mtf_mask) { char *token; bool no; bool found; int i; token = strtok(str, "/"); while (token) { if (!strncmp(token, "no", 2)) { no = true; token += 2; } else no = false; found = false; for (i = 0; i < ARRAY_SIZE(flags_str); i++) { if (type != flags_str[i].type) continue; if (!strcmp(token, flags_str[i].string)) { if (no) *mtf &= ~flags_str[i].flag; else *mtf |= flags_str[i].flag; *mtf_mask |= flags_str[i].flag; found = true; break; } } if (!found) return -1; token = strtok(NULL, "/"); } return 0; } static int flower_parse_ip_proto(char *str, __be16 eth_type, int type, __u8 *p_ip_proto, struct nlmsghdr *n) { int ret; __u8 ip_proto; if (eth_type != htons(ETH_P_IP) && eth_type != htons(ETH_P_IPV6)) goto err; if (matches(str, "tcp") == 0) { ip_proto = IPPROTO_TCP; } else if (matches(str, "udp") == 0) { ip_proto = IPPROTO_UDP; } else if (matches(str, "sctp") == 0) { ip_proto = IPPROTO_SCTP; } else if (matches(str, "icmp") == 0) { if (eth_type != htons(ETH_P_IP)) goto err; ip_proto = IPPROTO_ICMP; } else if (matches(str, "icmpv6") == 0) { if (eth_type != htons(ETH_P_IPV6)) goto err; ip_proto = IPPROTO_ICMPV6; } else { ret = get_u8(&ip_proto, str, 16); if (ret) return -1; } addattr8(n, MAX_MSG, type, ip_proto); *p_ip_proto = ip_proto; return 0; err: fprintf(stderr, "Illegal \"eth_type\" for ip proto\n"); return -1; } static int __flower_parse_ip_addr(char *str, int family, int addr4_type, int mask4_type, int addr6_type, int mask6_type, struct nlmsghdr *n) { int ret; inet_prefix addr; int bits; int i; ret = get_prefix(&addr, str, family); if (ret) return -1; if (family && (addr.family != family)) { fprintf(stderr, "Illegal \"eth_type\" for ip address\n"); return -1; } addattr_l(n, MAX_MSG, addr.family == AF_INET ? addr4_type : addr6_type, addr.data, addr.bytelen); memset(addr.data, 0xff, addr.bytelen); bits = addr.bitlen; for (i = 0; i < addr.bytelen / 4; i++) { if (!bits) { addr.data[i] = 0; } else if (bits / 32 >= 1) { bits -= 32; } else { addr.data[i] <<= 32 - bits; addr.data[i] = htonl(addr.data[i]); bits = 0; } } addattr_l(n, MAX_MSG, addr.family == AF_INET ? mask4_type : mask6_type, addr.data, addr.bytelen); return 0; } static int flower_parse_ip_addr(char *str, __be16 eth_type, int addr4_type, int mask4_type, int addr6_type, int mask6_type, struct nlmsghdr *n) { int family; if (eth_type == htons(ETH_P_IP)) { family = AF_INET; } else if (eth_type == htons(ETH_P_IPV6)) { family = AF_INET6; } else if (!eth_type) { family = AF_UNSPEC; } else { return -1; } return __flower_parse_ip_addr(str, family, addr4_type, mask4_type, addr6_type, mask6_type, n); } static bool flower_eth_type_arp(__be16 eth_type) { return eth_type == htons(ETH_P_ARP) || eth_type == htons(ETH_P_RARP); } static int flower_parse_arp_ip_addr(char *str, __be16 eth_type, int addr_type, int mask_type, struct nlmsghdr *n) { if (!flower_eth_type_arp(eth_type)) return -1; return __flower_parse_ip_addr(str, AF_INET, addr_type, mask_type, TCA_FLOWER_UNSPEC, TCA_FLOWER_UNSPEC, n); } static int flower_parse_u8(char *str, int value_type, int mask_type, int (*value_from_name)(const char *str, __u8 *value), bool (*value_validate)(__u8 value), struct nlmsghdr *n) { char *slash; int ret, err = -1; __u8 value, mask; slash = strchr(str, '/'); if (slash) *slash = '\0'; ret = value_from_name ? value_from_name(str, &value) : -1; if (ret < 0) { ret = get_u8(&value, str, 10); if (ret) goto err; } if (value_validate && !value_validate(value)) goto err; if (slash) { ret = get_u8(&mask, slash + 1, 10); if (ret) goto err; } else { mask = UINT8_MAX; } addattr8(n, MAX_MSG, value_type, value); addattr8(n, MAX_MSG, mask_type, mask); err = 0; err: if (slash) *slash = '/'; return err; } static const char *flower_print_arp_op_to_name(__u8 op) { switch (op) { case ARPOP_REQUEST: return "request"; case ARPOP_REPLY: return "reply"; default: return NULL; } } static int flower_arp_op_from_name(const char *name, __u8 *op) { if (!strcmp(name, "request")) *op = ARPOP_REQUEST; else if (!strcmp(name, "reply")) *op = ARPOP_REPLY; else return -1; return 0; } static bool flow_arp_op_validate(__u8 op) { return !op || op == ARPOP_REQUEST || op == ARPOP_REPLY; } static int flower_parse_arp_op(char *str, __be16 eth_type, int op_type, int mask_type, struct nlmsghdr *n) { if (!flower_eth_type_arp(eth_type)) return -1; return flower_parse_u8(str, op_type, mask_type, flower_arp_op_from_name, flow_arp_op_validate, n); } static int flower_icmp_attr_type(__be16 eth_type, __u8 ip_proto, enum flower_icmp_field field) { if (eth_type == htons(ETH_P_IP) && ip_proto == IPPROTO_ICMP) return field == FLOWER_ICMP_FIELD_CODE ? TCA_FLOWER_KEY_ICMPV4_CODE : TCA_FLOWER_KEY_ICMPV4_TYPE; else if (eth_type == htons(ETH_P_IPV6) && ip_proto == IPPROTO_ICMPV6) return field == FLOWER_ICMP_FIELD_CODE ? TCA_FLOWER_KEY_ICMPV6_CODE : TCA_FLOWER_KEY_ICMPV6_TYPE; return -1; } static int flower_icmp_attr_mask_type(__be16 eth_type, __u8 ip_proto, enum flower_icmp_field field) { if (eth_type == htons(ETH_P_IP) && ip_proto == IPPROTO_ICMP) return field == FLOWER_ICMP_FIELD_CODE ? TCA_FLOWER_KEY_ICMPV4_CODE_MASK : TCA_FLOWER_KEY_ICMPV4_TYPE_MASK; else if (eth_type == htons(ETH_P_IPV6) && ip_proto == IPPROTO_ICMPV6) return field == FLOWER_ICMP_FIELD_CODE ? TCA_FLOWER_KEY_ICMPV6_CODE_MASK : TCA_FLOWER_KEY_ICMPV6_TYPE_MASK; return -1; } static int flower_parse_icmp(char *str, __u16 eth_type, __u8 ip_proto, enum flower_icmp_field field, struct nlmsghdr *n) { int value_type, mask_type; value_type = flower_icmp_attr_type(eth_type, ip_proto, field); mask_type = flower_icmp_attr_mask_type(eth_type, ip_proto, field); if (value_type < 0 || mask_type < 0) return -1; return flower_parse_u8(str, value_type, mask_type, NULL, NULL, n); } static int flower_port_attr_type(__u8 ip_proto, enum flower_endpoint endpoint) { if (ip_proto == IPPROTO_TCP) return endpoint == FLOWER_ENDPOINT_SRC ? TCA_FLOWER_KEY_TCP_SRC : TCA_FLOWER_KEY_TCP_DST; else if (ip_proto == IPPROTO_UDP) return endpoint == FLOWER_ENDPOINT_SRC ? TCA_FLOWER_KEY_UDP_SRC : TCA_FLOWER_KEY_UDP_DST; else if (ip_proto == IPPROTO_SCTP) return endpoint == FLOWER_ENDPOINT_SRC ? TCA_FLOWER_KEY_SCTP_SRC : TCA_FLOWER_KEY_SCTP_DST; else return -1; } static int flower_port_range_attr_type(__u8 ip_proto, enum flower_endpoint type, __be16 *min_port_type, __be16 *max_port_type) { if (ip_proto == IPPROTO_TCP || ip_proto == IPPROTO_UDP || ip_proto == IPPROTO_SCTP) { if (type == FLOWER_ENDPOINT_SRC) { *min_port_type = TCA_FLOWER_KEY_PORT_SRC_MIN; *max_port_type = TCA_FLOWER_KEY_PORT_SRC_MAX; } else { *min_port_type = TCA_FLOWER_KEY_PORT_DST_MIN; *max_port_type = TCA_FLOWER_KEY_PORT_DST_MAX; } } else { return -1; } return 0; } /* parse range args in format 10-20 */ static int parse_range(char *str, __be16 *min, __be16 *max) { char *sep; sep = strchr(str, '-'); if (sep) { *sep = '\0'; if (get_be16(min, str, 10)) return -1; if (get_be16(max, sep + 1, 10)) return -1; } else { if (get_be16(min, str, 10)) return -1; } return 0; } static int flower_parse_port(char *str, __u8 ip_proto, enum flower_endpoint endpoint, struct nlmsghdr *n) { __be16 min = 0; __be16 max = 0; int ret; ret = parse_range(str, &min, &max); if (ret) return -1; if (min && max) { __be16 min_port_type, max_port_type; if (max <= min) { fprintf(stderr, "max value should be greater than min value\n"); return -1; } if (flower_port_range_attr_type(ip_proto, endpoint, &min_port_type, &max_port_type)) return -1; addattr16(n, MAX_MSG, min_port_type, min); addattr16(n, MAX_MSG, max_port_type, max); } else if (min && !max) { int type; type = flower_port_attr_type(ip_proto, endpoint); if (type < 0) return -1; addattr16(n, MAX_MSG, type, min); } else { return -1; } return 0; } #define TCP_FLAGS_MAX_MASK 0xfff static int flower_parse_tcp_flags(char *str, int flags_type, int mask_type, struct nlmsghdr *n) { char *slash; int ret, err = -1; __u16 flags; slash = strchr(str, '/'); if (slash) *slash = '\0'; ret = get_u16(&flags, str, 16); if (ret < 0 || flags & ~TCP_FLAGS_MAX_MASK) goto err; addattr16(n, MAX_MSG, flags_type, htons(flags)); if (slash) { ret = get_u16(&flags, slash + 1, 16); if (ret < 0 || flags & ~TCP_FLAGS_MAX_MASK) goto err; } else { flags = TCP_FLAGS_MAX_MASK; } addattr16(n, MAX_MSG, mask_type, htons(flags)); err = 0; err: if (slash) *slash = '/'; return err; } static int flower_parse_ip_tos_ttl(char *str, int key_type, int mask_type, struct nlmsghdr *n) { char *slash; int ret, err = -1; __u8 tos_ttl; slash = strchr(str, '/'); if (slash) *slash = '\0'; ret = get_u8(&tos_ttl, str, 10); if (ret < 0) ret = get_u8(&tos_ttl, str, 16); if (ret < 0) goto err; addattr8(n, MAX_MSG, key_type, tos_ttl); if (slash) { ret = get_u8(&tos_ttl, slash + 1, 16); if (ret < 0) goto err; } else { tos_ttl = 0xff; } addattr8(n, MAX_MSG, mask_type, tos_ttl); err = 0; err: if (slash) *slash = '/'; return err; } static int flower_parse_key_id(const char *str, int type, struct nlmsghdr *n) { int ret; __be32 key_id; ret = get_be32(&key_id, str, 10); if (!ret) addattr32(n, MAX_MSG, type, key_id); return ret; } static int flower_parse_enc_port(char *str, int type, struct nlmsghdr *n) { int ret; __be16 port; ret = get_be16(&port, str, 10); if (ret) return -1; addattr16(n, MAX_MSG, type, port); return 0; } static int flower_parse_geneve_opts(char *str, struct nlmsghdr *n) { struct rtattr *nest; char *token; int i, err; nest = addattr_nest(n, MAX_MSG, TCA_FLOWER_KEY_ENC_OPTS_GENEVE); i = 1; token = strsep(&str, ":"); while (token) { switch (i) { case TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS: { __be16 opt_class; if (!strlen(token)) break; err = get_be16(&opt_class, token, 16); if (err) return err; addattr16(n, MAX_MSG, i, opt_class); break; } case TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE: { __u8 opt_type; if (!strlen(token)) break; err = get_u8(&opt_type, token, 16); if (err) return err; addattr8(n, MAX_MSG, i, opt_type); break; } case TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA: { size_t token_len = strlen(token); __u8 *opts; if (!token_len) break; opts = malloc(token_len / 2); if (!opts) return -1; if (hex2mem(token, opts, token_len / 2) < 0) { free(opts); return -1; } addattr_l(n, MAX_MSG, i, opts, token_len / 2); free(opts); break; } default: fprintf(stderr, "Unknown \"geneve_opts\" type\n"); return -1; } token = strsep(&str, ":"); i++; } addattr_nest_end(n, nest); return 0; } static int flower_parse_enc_opt_part(char *str, struct nlmsghdr *n) { char *token; int err; token = strsep(&str, ","); while (token) { err = flower_parse_geneve_opts(token, n); if (err) return err; token = strsep(&str, ","); } return 0; } static int flower_check_enc_opt_key(char *key) { int key_len, col_cnt = 0; key_len = strlen(key); while ((key = strchr(key, ':'))) { if (strlen(key) == key_len) return -1; key_len = strlen(key) - 1; col_cnt++; key++; } if (col_cnt != 2 || !key_len) return -1; return 0; } static int flower_parse_enc_opts(char *str, struct nlmsghdr *n) { char key[XATTR_SIZE_MAX], mask[XATTR_SIZE_MAX]; int data_len, key_len, mask_len, err; char *token, *slash; struct rtattr *nest; key_len = 0; mask_len = 0; token = strsep(&str, ","); while (token) { slash = strchr(token, '/'); if (slash) *slash = '\0'; if ((key_len + strlen(token) > XATTR_SIZE_MAX) || flower_check_enc_opt_key(token)) return -1; strcpy(&key[key_len], token); key_len += strlen(token) + 1; key[key_len - 1] = ','; if (!slash) { /* Pad out mask when not provided */ if (mask_len + strlen(token) > XATTR_SIZE_MAX) return -1; data_len = strlen(rindex(token, ':')); sprintf(&mask[mask_len], "ffff:ff:"); mask_len += 8; memset(&mask[mask_len], 'f', data_len - 1); mask_len += data_len; mask[mask_len - 1] = ','; token = strsep(&str, ","); continue; } if (mask_len + strlen(slash + 1) > XATTR_SIZE_MAX) return -1; strcpy(&mask[mask_len], slash + 1); mask_len += strlen(slash + 1) + 1; mask[mask_len - 1] = ','; *slash = '/'; token = strsep(&str, ","); } key[key_len - 1] = '\0'; mask[mask_len - 1] = '\0'; nest = addattr_nest(n, MAX_MSG, TCA_FLOWER_KEY_ENC_OPTS); err = flower_parse_enc_opt_part(key, n); if (err) return err; addattr_nest_end(n, nest); nest = addattr_nest(n, MAX_MSG, TCA_FLOWER_KEY_ENC_OPTS_MASK); err = flower_parse_enc_opt_part(mask, n); if (err) return err; addattr_nest_end(n, nest); return 0; } static int flower_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n) { int ret; struct tcmsg *t = NLMSG_DATA(n); struct rtattr *tail; __be16 eth_type = TC_H_MIN(t->tcm_info); __be16 vlan_ethtype = 0; __be16 cvlan_ethtype = 0; __u8 ip_proto = 0xff; __u32 flags = 0; __u32 mtf = 0; __u32 mtf_mask = 0; if (handle) { ret = get_u32(&t->tcm_handle, handle, 0); if (ret) { fprintf(stderr, "Illegal \"handle\"\n"); return -1; } } tail = (struct rtattr *) (((void *) n) + NLMSG_ALIGN(n->nlmsg_len)); addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0); if (argc == 0) { /*at minimal we will match all ethertype packets */ goto parse_done; } while (argc > 0) { if (matches(*argv, "classid") == 0 || matches(*argv, "flowid") == 0) { unsigned int handle; NEXT_ARG(); ret = get_tc_classid(&handle, *argv); if (ret) { fprintf(stderr, "Illegal \"classid\"\n"); return -1; } addattr_l(n, MAX_MSG, TCA_FLOWER_CLASSID, &handle, 4); } else if (matches(*argv, "hw_tc") == 0) { unsigned int handle; __u32 tc; char *end; NEXT_ARG(); tc = strtoul(*argv, &end, 0); if (*end) { fprintf(stderr, "Illegal TC index\n"); return -1; } if (tc >= TC_QOPT_MAX_QUEUE) { fprintf(stderr, "TC index exceeds max range\n"); return -1; } handle = TC_H_MAKE(TC_H_MAJ(t->tcm_parent), TC_H_MIN(tc + TC_H_MIN_PRIORITY)); addattr_l(n, MAX_MSG, TCA_FLOWER_CLASSID, &handle, sizeof(handle)); } else if (matches(*argv, "ip_flags") == 0) { NEXT_ARG(); ret = flower_parse_matching_flags(*argv, FLOWER_IP_FLAGS, &mtf, &mtf_mask); if (ret < 0) { fprintf(stderr, "Illegal \"ip_flags\"\n"); return -1; } } else if (matches(*argv, "verbose") == 0) { flags |= TCA_CLS_FLAGS_VERBOSE; } else if (matches(*argv, "skip_hw") == 0) { flags |= TCA_CLS_FLAGS_SKIP_HW; } else if (matches(*argv, "skip_sw") == 0) { flags |= TCA_CLS_FLAGS_SKIP_SW; } else if (matches(*argv, "indev") == 0) { NEXT_ARG(); if (check_ifname(*argv)) invarg("\"indev\" not a valid ifname", *argv); addattrstrz(n, MAX_MSG, TCA_FLOWER_INDEV, *argv); } else if (matches(*argv, "vlan_id") == 0) { __u16 vid; NEXT_ARG(); if (!eth_type_vlan(eth_type)) { fprintf(stderr, "Can't set \"vlan_id\" if ethertype isn't 802.1Q or 802.1AD\n"); return -1; } ret = get_u16(&vid, *argv, 10); if (ret < 0 || vid & ~0xfff) { fprintf(stderr, "Illegal \"vlan_id\"\n"); return -1; } addattr16(n, MAX_MSG, TCA_FLOWER_KEY_VLAN_ID, vid); } else if (matches(*argv, "vlan_prio") == 0) { __u8 vlan_prio; NEXT_ARG(); if (!eth_type_vlan(eth_type)) { fprintf(stderr, "Can't set \"vlan_prio\" if ethertype isn't 802.1Q or 802.1AD\n"); return -1; } ret = get_u8(&vlan_prio, *argv, 10); if (ret < 0 || vlan_prio & ~0x7) { fprintf(stderr, "Illegal \"vlan_prio\"\n"); return -1; } addattr8(n, MAX_MSG, TCA_FLOWER_KEY_VLAN_PRIO, vlan_prio); } else if (matches(*argv, "vlan_ethtype") == 0) { NEXT_ARG(); ret = flower_parse_vlan_eth_type(*argv, eth_type, TCA_FLOWER_KEY_VLAN_ETH_TYPE, &vlan_ethtype, n); if (ret < 0) return -1; } else if (matches(*argv, "cvlan_id") == 0) { __u16 vid; NEXT_ARG(); if (!eth_type_vlan(vlan_ethtype)) { fprintf(stderr, "Can't set \"cvlan_id\" if inner vlan ethertype isn't 802.1Q or 802.1AD\n"); return -1; } ret = get_u16(&vid, *argv, 10); if (ret < 0 || vid & ~0xfff) { fprintf(stderr, "Illegal \"cvlan_id\"\n"); return -1; } addattr16(n, MAX_MSG, TCA_FLOWER_KEY_CVLAN_ID, vid); } else if (matches(*argv, "cvlan_prio") == 0) { __u8 cvlan_prio; NEXT_ARG(); if (!eth_type_vlan(vlan_ethtype)) { fprintf(stderr, "Can't set \"cvlan_prio\" if inner vlan ethertype isn't 802.1Q or 802.1AD\n"); return -1; } ret = get_u8(&cvlan_prio, *argv, 10); if (ret < 0 || cvlan_prio & ~0x7) { fprintf(stderr, "Illegal \"cvlan_prio\"\n"); return -1; } addattr8(n, MAX_MSG, TCA_FLOWER_KEY_CVLAN_PRIO, cvlan_prio); } else if (matches(*argv, "cvlan_ethtype") == 0) { NEXT_ARG(); ret = flower_parse_vlan_eth_type(*argv, vlan_ethtype, TCA_FLOWER_KEY_CVLAN_ETH_TYPE, &cvlan_ethtype, n); if (ret < 0) return -1; } else if (matches(*argv, "mpls_label") == 0) { __u32 label; NEXT_ARG(); if (eth_type != htons(ETH_P_MPLS_UC) && eth_type != htons(ETH_P_MPLS_MC)) { fprintf(stderr, "Can't set \"mpls_label\" if ethertype isn't MPLS\n"); return -1; } ret = get_u32(&label, *argv, 10); if (ret < 0 || label & ~(MPLS_LS_LABEL_MASK >> MPLS_LS_LABEL_SHIFT)) { fprintf(stderr, "Illegal \"mpls_label\"\n"); return -1; } addattr32(n, MAX_MSG, TCA_FLOWER_KEY_MPLS_LABEL, label); } else if (matches(*argv, "mpls_tc") == 0) { __u8 tc; NEXT_ARG(); if (eth_type != htons(ETH_P_MPLS_UC) && eth_type != htons(ETH_P_MPLS_MC)) { fprintf(stderr, "Can't set \"mpls_tc\" if ethertype isn't MPLS\n"); return -1; } ret = get_u8(&tc, *argv, 10); if (ret < 0 || tc & ~(MPLS_LS_TC_MASK >> MPLS_LS_TC_SHIFT)) { fprintf(stderr, "Illegal \"mpls_tc\"\n"); return -1; } addattr8(n, MAX_MSG, TCA_FLOWER_KEY_MPLS_TC, tc); } else if (matches(*argv, "mpls_bos") == 0) { __u8 bos; NEXT_ARG(); if (eth_type != htons(ETH_P_MPLS_UC) && eth_type != htons(ETH_P_MPLS_MC)) { fprintf(stderr, "Can't set \"mpls_bos\" if ethertype isn't MPLS\n"); return -1; } ret = get_u8(&bos, *argv, 10); if (ret < 0 || bos & ~(MPLS_LS_S_MASK >> MPLS_LS_S_SHIFT)) { fprintf(stderr, "Illegal \"mpls_bos\"\n"); return -1; } addattr8(n, MAX_MSG, TCA_FLOWER_KEY_MPLS_BOS, bos); } else if (matches(*argv, "mpls_ttl") == 0) { __u8 ttl; NEXT_ARG(); if (eth_type != htons(ETH_P_MPLS_UC) && eth_type != htons(ETH_P_MPLS_MC)) { fprintf(stderr, "Can't set \"mpls_ttl\" if ethertype isn't MPLS\n"); return -1; } ret = get_u8(&ttl, *argv, 10); if (ret < 0 || ttl & ~(MPLS_LS_TTL_MASK >> MPLS_LS_TTL_SHIFT)) { fprintf(stderr, "Illegal \"mpls_ttl\"\n"); return -1; } addattr8(n, MAX_MSG, TCA_FLOWER_KEY_MPLS_TTL, ttl); } else if (matches(*argv, "dst_mac") == 0) { NEXT_ARG(); ret = flower_parse_eth_addr(*argv, TCA_FLOWER_KEY_ETH_DST, TCA_FLOWER_KEY_ETH_DST_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"dst_mac\"\n"); return -1; } } else if (matches(*argv, "src_mac") == 0) { NEXT_ARG(); ret = flower_parse_eth_addr(*argv, TCA_FLOWER_KEY_ETH_SRC, TCA_FLOWER_KEY_ETH_SRC_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"src_mac\"\n"); return -1; } } else if (matches(*argv, "ip_proto") == 0) { NEXT_ARG(); ret = flower_parse_ip_proto(*argv, cvlan_ethtype ? cvlan_ethtype : vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_IP_PROTO, &ip_proto, n); if (ret < 0) { fprintf(stderr, "Illegal \"ip_proto\"\n"); return -1; } } else if (matches(*argv, "ip_tos") == 0) { NEXT_ARG(); ret = flower_parse_ip_tos_ttl(*argv, TCA_FLOWER_KEY_IP_TOS, TCA_FLOWER_KEY_IP_TOS_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"ip_tos\"\n"); return -1; } } else if (matches(*argv, "ip_ttl") == 0) { NEXT_ARG(); ret = flower_parse_ip_tos_ttl(*argv, TCA_FLOWER_KEY_IP_TTL, TCA_FLOWER_KEY_IP_TTL_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"ip_ttl\"\n"); return -1; } } else if (matches(*argv, "dst_ip") == 0) { NEXT_ARG(); ret = flower_parse_ip_addr(*argv, cvlan_ethtype ? cvlan_ethtype : vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_IPV4_DST, TCA_FLOWER_KEY_IPV4_DST_MASK, TCA_FLOWER_KEY_IPV6_DST, TCA_FLOWER_KEY_IPV6_DST_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"dst_ip\"\n"); return -1; } } else if (matches(*argv, "src_ip") == 0) { NEXT_ARG(); ret = flower_parse_ip_addr(*argv, cvlan_ethtype ? cvlan_ethtype : vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_IPV4_SRC, TCA_FLOWER_KEY_IPV4_SRC_MASK, TCA_FLOWER_KEY_IPV6_SRC, TCA_FLOWER_KEY_IPV6_SRC_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"src_ip\"\n"); return -1; } } else if (matches(*argv, "dst_port") == 0) { NEXT_ARG(); ret = flower_parse_port(*argv, ip_proto, FLOWER_ENDPOINT_DST, n); if (ret < 0) { fprintf(stderr, "Illegal \"dst_port\"\n"); return -1; } } else if (matches(*argv, "src_port") == 0) { NEXT_ARG(); ret = flower_parse_port(*argv, ip_proto, FLOWER_ENDPOINT_SRC, n); if (ret < 0) { fprintf(stderr, "Illegal \"src_port\"\n"); return -1; } } else if (matches(*argv, "tcp_flags") == 0) { NEXT_ARG(); ret = flower_parse_tcp_flags(*argv, TCA_FLOWER_KEY_TCP_FLAGS, TCA_FLOWER_KEY_TCP_FLAGS_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"tcp_flags\"\n"); return -1; } } else if (matches(*argv, "type") == 0) { NEXT_ARG(); ret = flower_parse_icmp(*argv, eth_type, ip_proto, FLOWER_ICMP_FIELD_TYPE, n); if (ret < 0) { fprintf(stderr, "Illegal \"icmp type\"\n"); return -1; } } else if (matches(*argv, "code") == 0) { NEXT_ARG(); ret = flower_parse_icmp(*argv, eth_type, ip_proto, FLOWER_ICMP_FIELD_CODE, n); if (ret < 0) { fprintf(stderr, "Illegal \"icmp code\"\n"); return -1; } } else if (matches(*argv, "arp_tip") == 0) { NEXT_ARG(); ret = flower_parse_arp_ip_addr(*argv, vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_ARP_TIP, TCA_FLOWER_KEY_ARP_TIP_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"arp_tip\"\n"); return -1; } } else if (matches(*argv, "arp_sip") == 0) { NEXT_ARG(); ret = flower_parse_arp_ip_addr(*argv, vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_ARP_SIP, TCA_FLOWER_KEY_ARP_SIP_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"arp_sip\"\n"); return -1; } } else if (matches(*argv, "arp_op") == 0) { NEXT_ARG(); ret = flower_parse_arp_op(*argv, vlan_ethtype ? vlan_ethtype : eth_type, TCA_FLOWER_KEY_ARP_OP, TCA_FLOWER_KEY_ARP_OP_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"arp_op\"\n"); return -1; } } else if (matches(*argv, "arp_tha") == 0) { NEXT_ARG(); ret = flower_parse_eth_addr(*argv, TCA_FLOWER_KEY_ARP_THA, TCA_FLOWER_KEY_ARP_THA_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"arp_tha\"\n"); return -1; } } else if (matches(*argv, "arp_sha") == 0) { NEXT_ARG(); ret = flower_parse_eth_addr(*argv, TCA_FLOWER_KEY_ARP_SHA, TCA_FLOWER_KEY_ARP_SHA_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"arp_sha\"\n"); return -1; } } else if (matches(*argv, "enc_dst_ip") == 0) { NEXT_ARG(); ret = flower_parse_ip_addr(*argv, 0, TCA_FLOWER_KEY_ENC_IPV4_DST, TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, TCA_FLOWER_KEY_ENC_IPV6_DST, TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_dst_ip\"\n"); return -1; } } else if (matches(*argv, "enc_src_ip") == 0) { NEXT_ARG(); ret = flower_parse_ip_addr(*argv, 0, TCA_FLOWER_KEY_ENC_IPV4_SRC, TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, TCA_FLOWER_KEY_ENC_IPV6_SRC, TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_src_ip\"\n"); return -1; } } else if (matches(*argv, "enc_key_id") == 0) { NEXT_ARG(); ret = flower_parse_key_id(*argv, TCA_FLOWER_KEY_ENC_KEY_ID, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_key_id\"\n"); return -1; } } else if (matches(*argv, "enc_dst_port") == 0) { NEXT_ARG(); ret = flower_parse_enc_port(*argv, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_dst_port\"\n"); return -1; } } else if (matches(*argv, "enc_tos") == 0) { NEXT_ARG(); ret = flower_parse_ip_tos_ttl(*argv, TCA_FLOWER_KEY_ENC_IP_TOS, TCA_FLOWER_KEY_ENC_IP_TOS_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_tos\"\n"); return -1; } } else if (matches(*argv, "enc_ttl") == 0) { NEXT_ARG(); ret = flower_parse_ip_tos_ttl(*argv, TCA_FLOWER_KEY_ENC_IP_TTL, TCA_FLOWER_KEY_ENC_IP_TTL_MASK, n); if (ret < 0) { fprintf(stderr, "Illegal \"enc_ttl\"\n"); return -1; } } else if (matches(*argv, "geneve_opts") == 0) { NEXT_ARG(); ret = flower_parse_enc_opts(*argv, n); if (ret < 0) { fprintf(stderr, "Illegal \"geneve_opts\"\n"); return -1; } } else if (matches(*argv, "action") == 0) { NEXT_ARG(); ret = parse_action(&argc, &argv, TCA_FLOWER_ACT, n); if (ret) { fprintf(stderr, "Illegal \"action\"\n"); return -1; } continue; } else if (strcmp(*argv, "help") == 0) { explain(); return -1; } else { fprintf(stderr, "What is \"%s\"?\n", *argv); explain(); return -1; } argc--; argv++; } parse_done: ret = addattr32(n, MAX_MSG, TCA_FLOWER_FLAGS, flags); if (ret) return ret; if (mtf_mask) { ret = addattr32(n, MAX_MSG, TCA_FLOWER_KEY_FLAGS, htonl(mtf)); if (ret) return ret; ret = addattr32(n, MAX_MSG, TCA_FLOWER_KEY_FLAGS_MASK, htonl(mtf_mask)); if (ret) return ret; } if (eth_type != htons(ETH_P_ALL)) { ret = addattr16(n, MAX_MSG, TCA_FLOWER_KEY_ETH_TYPE, eth_type); if (ret) return ret; } tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail; return 0; } static int __mask_bits(char *addr, size_t len) { int bits = 0; bool hole = false; int i; int j; for (i = 0; i < len; i++, addr++) { for (j = 7; j >= 0; j--) { if (((*addr) >> j) & 0x1) { if (hole) return -1; bits++; } else if (bits) { hole = true; } else{ return -1; } } } return bits; } static void flower_print_eth_addr(char *name, struct rtattr *addr_attr, struct rtattr *mask_attr) { SPRINT_BUF(namefrm); SPRINT_BUF(out); SPRINT_BUF(b1); size_t done; int bits; if (!addr_attr || RTA_PAYLOAD(addr_attr) != ETH_ALEN) return; done = sprintf(out, "%s", ll_addr_n2a(RTA_DATA(addr_attr), ETH_ALEN, 0, b1, sizeof(b1))); if (mask_attr && RTA_PAYLOAD(mask_attr) == ETH_ALEN) { bits = __mask_bits(RTA_DATA(mask_attr), ETH_ALEN); if (bits < 0) sprintf(out + done, "/%s", ll_addr_n2a(RTA_DATA(mask_attr), ETH_ALEN, 0, b1, sizeof(b1))); else if (bits < ETH_ALEN * 8) sprintf(out + done, "/%d", bits); } sprintf(namefrm, "\n %s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } static void flower_print_eth_type(__be16 *p_eth_type, struct rtattr *eth_type_attr) { SPRINT_BUF(out); __be16 eth_type; if (!eth_type_attr) return; eth_type = rta_getattr_u16(eth_type_attr); if (eth_type == htons(ETH_P_IP)) sprintf(out, "ipv4"); else if (eth_type == htons(ETH_P_IPV6)) sprintf(out, "ipv6"); else if (eth_type == htons(ETH_P_ARP)) sprintf(out, "arp"); else if (eth_type == htons(ETH_P_RARP)) sprintf(out, "rarp"); else sprintf(out, "%04x", ntohs(eth_type)); print_string(PRINT_ANY, "eth_type", "\n eth_type %s", out); *p_eth_type = eth_type; } static void flower_print_ip_proto(__u8 *p_ip_proto, struct rtattr *ip_proto_attr) { SPRINT_BUF(out); __u8 ip_proto; if (!ip_proto_attr) return; ip_proto = rta_getattr_u8(ip_proto_attr); if (ip_proto == IPPROTO_TCP) sprintf(out, "tcp"); else if (ip_proto == IPPROTO_UDP) sprintf(out, "udp"); else if (ip_proto == IPPROTO_SCTP) sprintf(out, "sctp"); else if (ip_proto == IPPROTO_ICMP) sprintf(out, "icmp"); else if (ip_proto == IPPROTO_ICMPV6) sprintf(out, "icmpv6"); else sprintf(out, "%02x", ip_proto); print_string(PRINT_ANY, "ip_proto", "\n ip_proto %s", out); *p_ip_proto = ip_proto; } static void flower_print_ip_attr(const char *name, struct rtattr *key_attr, struct rtattr *mask_attr) { SPRINT_BUF(namefrm); SPRINT_BUF(out); size_t done; if (!key_attr) return; done = sprintf(out, "0x%x", rta_getattr_u8(key_attr)); if (mask_attr) sprintf(out + done, "/%x", rta_getattr_u8(mask_attr)); print_string(PRINT_FP, NULL, "%s ", _SL_); sprintf(namefrm, "%s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } static void flower_print_matching_flags(char *name, enum flower_matching_flags type, struct rtattr *attr, struct rtattr *mask_attr) { int i; int count = 0; __u32 mtf; __u32 mtf_mask; if (!mask_attr || RTA_PAYLOAD(mask_attr) != 4) return; mtf = ntohl(rta_getattr_u32(attr)); mtf_mask = ntohl(rta_getattr_u32(mask_attr)); for (i = 0; i < ARRAY_SIZE(flags_str); i++) { if (type != flags_str[i].type) continue; if (mtf_mask & flags_str[i].flag) { if (++count == 1) { print_string(PRINT_FP, NULL, "\n %s ", name); open_json_object(name); } else { print_string(PRINT_FP, NULL, "/", NULL); } print_bool(PRINT_JSON, flags_str[i].string, NULL, mtf & flags_str[i].flag); if (mtf & flags_str[i].flag) print_string(PRINT_FP, NULL, "%s", flags_str[i].string); else print_string(PRINT_FP, NULL, "no%s", flags_str[i].string); } } if (count) close_json_object(); } static void flower_print_ip_addr(char *name, __be16 eth_type, struct rtattr *addr4_attr, struct rtattr *mask4_attr, struct rtattr *addr6_attr, struct rtattr *mask6_attr) { struct rtattr *addr_attr; struct rtattr *mask_attr; SPRINT_BUF(namefrm); SPRINT_BUF(out); size_t done; int family; size_t len; int bits; if (eth_type == htons(ETH_P_IP)) { family = AF_INET; addr_attr = addr4_attr; mask_attr = mask4_attr; len = 4; } else if (eth_type == htons(ETH_P_IPV6)) { family = AF_INET6; addr_attr = addr6_attr; mask_attr = mask6_attr; len = 16; } else { return; } if (!addr_attr || RTA_PAYLOAD(addr_attr) != len) return; if (!mask_attr || RTA_PAYLOAD(mask_attr) != len) return; done = sprintf(out, "%s", rt_addr_n2a_rta(family, addr_attr)); bits = __mask_bits(RTA_DATA(mask_attr), len); if (bits < 0) sprintf(out + done, "/%s", rt_addr_n2a_rta(family, mask_attr)); else if (bits < len * 8) sprintf(out + done, "/%d", bits); sprintf(namefrm, "\n %s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } static void flower_print_ip4_addr(char *name, struct rtattr *addr_attr, struct rtattr *mask_attr) { return flower_print_ip_addr(name, htons(ETH_P_IP), addr_attr, mask_attr, 0, 0); } static void flower_print_port(char *name, struct rtattr *attr) { SPRINT_BUF(namefrm); if (!attr) return; sprintf(namefrm,"\n %s %%u", name); print_hu(PRINT_ANY, name, namefrm, rta_getattr_be16(attr)); } static void flower_print_port_range(char *name, struct rtattr *min_attr, struct rtattr *max_attr) { if (!min_attr || !max_attr) return; if (is_json_context()) { open_json_object(name); print_hu(PRINT_JSON, "start", NULL, rta_getattr_be16(min_attr)); print_hu(PRINT_JSON, "end", NULL, rta_getattr_be16(max_attr)); close_json_object(); } else { SPRINT_BUF(namefrm); SPRINT_BUF(out); size_t done; done = sprintf(out, "%u", rta_getattr_be16(min_attr)); sprintf(out + done, "-%u", rta_getattr_be16(max_attr)); sprintf(namefrm, "\n %s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } } static void flower_print_tcp_flags(const char *name, struct rtattr *flags_attr, struct rtattr *mask_attr) { SPRINT_BUF(namefrm); SPRINT_BUF(out); size_t done; if (!flags_attr) return; done = sprintf(out, "0x%x", rta_getattr_be16(flags_attr)); if (mask_attr) sprintf(out + done, "/%x", rta_getattr_be16(mask_attr)); print_string(PRINT_FP, NULL, "%s ", _SL_); sprintf(namefrm, "%s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } static void flower_print_key_id(const char *name, struct rtattr *attr) { SPRINT_BUF(namefrm); if (!attr) return; sprintf(namefrm,"\n %s %%u", name); print_uint(PRINT_ANY, name, namefrm, rta_getattr_be32(attr)); } static void flower_print_geneve_opts(const char *name, struct rtattr *attr, char *strbuf) { struct rtattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1]; int ii, data_len, offset = 0, slen = 0; struct rtattr *i = RTA_DATA(attr); int rem = RTA_PAYLOAD(attr); __u8 type, data_r[rem]; char data[rem * 2 + 1]; __u16 class; open_json_array(PRINT_JSON, name); while (rem) { parse_rtattr(tb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX, i, rem); class = rta_getattr_be16(tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]); type = rta_getattr_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]); data_len = RTA_PAYLOAD(tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]); hexstring_n2a(RTA_DATA(tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]), data_len, data, sizeof(data)); hex2mem(data, data_r, data_len); offset += data_len + 20; rem -= data_len + 20; i = RTA_DATA(attr) + offset; open_json_object(NULL); print_uint(PRINT_JSON, "class", NULL, class); print_uint(PRINT_JSON, "type", NULL, type); open_json_array(PRINT_JSON, "data"); for (ii = 0; ii < data_len; ii++) print_uint(PRINT_JSON, NULL, NULL, data_r[ii]); close_json_array(PRINT_JSON, "data"); close_json_object(); slen += sprintf(strbuf + slen, "%04x:%02x:%s", class, type, data); if (rem) slen += sprintf(strbuf + slen, ","); } close_json_array(PRINT_JSON, name); } static void flower_print_geneve_parts(const char *name, struct rtattr *attr, char *key, char *mask) { char *namefrm = "\n geneve_opt %s"; char *key_token, *mask_token, *out; int len; out = malloc(RTA_PAYLOAD(attr) * 4 + 3); if (!out) return; len = 0; key_token = strsep(&key, ","); mask_token = strsep(&mask, ","); while (key_token) { len += sprintf(&out[len], "%s/%s,", key_token, mask_token); mask_token = strsep(&mask, ","); key_token = strsep(&key, ","); } out[len - 1] = '\0'; print_string(PRINT_FP, name, namefrm, out); free(out); } static void flower_print_enc_opts(const char *name, struct rtattr *attr, struct rtattr *mask_attr) { struct rtattr *key_tb[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1]; struct rtattr *msk_tb[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1]; char *key, *msk; if (!attr) return; key = malloc(RTA_PAYLOAD(attr) * 2 + 1); if (!key) return; msk = malloc(RTA_PAYLOAD(attr) * 2 + 1); if (!msk) goto err_key_free; parse_rtattr_nested(key_tb, TCA_FLOWER_KEY_ENC_OPTS_MAX, attr); flower_print_geneve_opts("geneve_opt_key", key_tb[TCA_FLOWER_KEY_ENC_OPTS_GENEVE], key); parse_rtattr_nested(msk_tb, TCA_FLOWER_KEY_ENC_OPTS_MAX, mask_attr); flower_print_geneve_opts("geneve_opt_mask", msk_tb[TCA_FLOWER_KEY_ENC_OPTS_GENEVE], msk); flower_print_geneve_parts(name, attr, key, msk); free(msk); err_key_free: free(key); } static void flower_print_masked_u8(const char *name, struct rtattr *attr, struct rtattr *mask_attr, const char *(*value_to_str)(__u8 value)) { const char *value_str = NULL; __u8 value, mask; SPRINT_BUF(namefrm); SPRINT_BUF(out); size_t done; if (!attr) return; value = rta_getattr_u8(attr); mask = mask_attr ? rta_getattr_u8(mask_attr) : UINT8_MAX; if (mask == UINT8_MAX && value_to_str) value_str = value_to_str(value); if (value_str) done = sprintf(out, "%s", value_str); else done = sprintf(out, "%d", value); if (mask != UINT8_MAX) sprintf(out + done, "/%d", mask); sprintf(namefrm,"\n %s %%s", name); print_string(PRINT_ANY, name, namefrm, out); } static void flower_print_u8(const char *name, struct rtattr *attr) { flower_print_masked_u8(name, attr, NULL, NULL); } static void flower_print_u32(const char *name, struct rtattr *attr) { SPRINT_BUF(namefrm); if (!attr) return; sprintf(namefrm,"\n %s %%u", name); print_uint(PRINT_ANY, name, namefrm, rta_getattr_u32(attr)); } static void flower_print_arp_op(const char *name, struct rtattr *op_attr, struct rtattr *mask_attr) { flower_print_masked_u8(name, op_attr, mask_attr, flower_print_arp_op_to_name); } static int flower_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle) { struct rtattr *tb[TCA_FLOWER_MAX + 1]; __be16 min_port_type, max_port_type; int nl_type, nl_mask_type; __be16 eth_type = 0; __u8 ip_proto = 0xff; if (!opt) return 0; parse_rtattr_nested(tb, TCA_FLOWER_MAX, opt); if (handle) print_uint(PRINT_ANY, "handle", "handle 0x%x ", handle); if (tb[TCA_FLOWER_CLASSID]) { __u32 h = rta_getattr_u32(tb[TCA_FLOWER_CLASSID]); if (TC_H_MIN(h) < TC_H_MIN_PRIORITY || TC_H_MIN(h) > (TC_H_MIN_PRIORITY + TC_QOPT_MAX_QUEUE - 1)) { SPRINT_BUF(b1); print_string(PRINT_ANY, "classid", "classid %s ", sprint_tc_classid(h, b1)); } else { print_uint(PRINT_ANY, "hw_tc", "hw_tc %u ", TC_H_MIN(h) - TC_H_MIN_PRIORITY); } } if (tb[TCA_FLOWER_INDEV]) { struct rtattr *attr = tb[TCA_FLOWER_INDEV]; print_string(PRINT_ANY, "indev", "\n indev %s", rta_getattr_str(attr)); } open_json_object("keys"); if (tb[TCA_FLOWER_KEY_VLAN_ID]) { struct rtattr *attr = tb[TCA_FLOWER_KEY_VLAN_ID]; print_uint(PRINT_ANY, "vlan_id", "\n vlan_id %u", rta_getattr_u16(attr)); } if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) { struct rtattr *attr = tb[TCA_FLOWER_KEY_VLAN_PRIO]; print_uint(PRINT_ANY, "vlan_prio", "\n vlan_prio %d", rta_getattr_u8(attr)); } if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) { SPRINT_BUF(buf); struct rtattr *attr = tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]; print_string(PRINT_ANY, "vlan_ethtype", "\n vlan_ethtype %s", ll_proto_n2a(rta_getattr_u16(attr), buf, sizeof(buf))); } if (tb[TCA_FLOWER_KEY_CVLAN_ID]) { struct rtattr *attr = tb[TCA_FLOWER_KEY_CVLAN_ID]; print_uint(PRINT_ANY, "cvlan_id", "\n cvlan_id %u", rta_getattr_u16(attr)); } if (tb[TCA_FLOWER_KEY_CVLAN_PRIO]) { struct rtattr *attr = tb[TCA_FLOWER_KEY_CVLAN_PRIO]; print_uint(PRINT_ANY, "cvlan_prio", "\n cvlan_prio %d", rta_getattr_u8(attr)); } if (tb[TCA_FLOWER_KEY_CVLAN_ETH_TYPE]) { SPRINT_BUF(buf); struct rtattr *attr = tb[TCA_FLOWER_KEY_CVLAN_ETH_TYPE]; print_string(PRINT_ANY, "cvlan_ethtype", "\n cvlan_ethtype %s", ll_proto_n2a(rta_getattr_u16(attr), buf, sizeof(buf))); } flower_print_eth_addr("dst_mac", tb[TCA_FLOWER_KEY_ETH_DST], tb[TCA_FLOWER_KEY_ETH_DST_MASK]); flower_print_eth_addr("src_mac", tb[TCA_FLOWER_KEY_ETH_SRC], tb[TCA_FLOWER_KEY_ETH_SRC_MASK]); flower_print_eth_type(ð_type, tb[TCA_FLOWER_KEY_ETH_TYPE]); flower_print_ip_proto(&ip_proto, tb[TCA_FLOWER_KEY_IP_PROTO]); flower_print_ip_attr("ip_tos", tb[TCA_FLOWER_KEY_IP_TOS], tb[TCA_FLOWER_KEY_IP_TOS_MASK]); flower_print_ip_attr("ip_ttl", tb[TCA_FLOWER_KEY_IP_TTL], tb[TCA_FLOWER_KEY_IP_TTL_MASK]); flower_print_u32("mpls_label", tb[TCA_FLOWER_KEY_MPLS_LABEL]); flower_print_u8("mpls_tc", tb[TCA_FLOWER_KEY_MPLS_TC]); flower_print_u8("mpls_bos", tb[TCA_FLOWER_KEY_MPLS_BOS]); flower_print_u8("mpls_ttl", tb[TCA_FLOWER_KEY_MPLS_TTL]); flower_print_ip_addr("dst_ip", eth_type, tb[TCA_FLOWER_KEY_IPV4_DST], tb[TCA_FLOWER_KEY_IPV4_DST_MASK], tb[TCA_FLOWER_KEY_IPV6_DST], tb[TCA_FLOWER_KEY_IPV6_DST_MASK]); flower_print_ip_addr("src_ip", eth_type, tb[TCA_FLOWER_KEY_IPV4_SRC], tb[TCA_FLOWER_KEY_IPV4_SRC_MASK], tb[TCA_FLOWER_KEY_IPV6_SRC], tb[TCA_FLOWER_KEY_IPV6_SRC_MASK]); nl_type = flower_port_attr_type(ip_proto, FLOWER_ENDPOINT_DST); if (nl_type >= 0) flower_print_port("dst_port", tb[nl_type]); nl_type = flower_port_attr_type(ip_proto, FLOWER_ENDPOINT_SRC); if (nl_type >= 0) flower_print_port("src_port", tb[nl_type]); if (!flower_port_range_attr_type(ip_proto, FLOWER_ENDPOINT_DST, &min_port_type, &max_port_type)) flower_print_port_range("dst_port", tb[min_port_type], tb[max_port_type]); if (!flower_port_range_attr_type(ip_proto, FLOWER_ENDPOINT_SRC, &min_port_type, &max_port_type)) flower_print_port_range("src_port", tb[min_port_type], tb[max_port_type]); flower_print_tcp_flags("tcp_flags", tb[TCA_FLOWER_KEY_TCP_FLAGS], tb[TCA_FLOWER_KEY_TCP_FLAGS_MASK]); nl_type = flower_icmp_attr_type(eth_type, ip_proto, FLOWER_ICMP_FIELD_TYPE); nl_mask_type = flower_icmp_attr_mask_type(eth_type, ip_proto, FLOWER_ICMP_FIELD_TYPE); if (nl_type >= 0 && nl_mask_type >= 0) flower_print_masked_u8("icmp_type", tb[nl_type], tb[nl_mask_type], NULL); nl_type = flower_icmp_attr_type(eth_type, ip_proto, FLOWER_ICMP_FIELD_CODE); nl_mask_type = flower_icmp_attr_mask_type(eth_type, ip_proto, FLOWER_ICMP_FIELD_CODE); if (nl_type >= 0 && nl_mask_type >= 0) flower_print_masked_u8("icmp_code", tb[nl_type], tb[nl_mask_type], NULL); flower_print_ip4_addr("arp_sip", tb[TCA_FLOWER_KEY_ARP_SIP], tb[TCA_FLOWER_KEY_ARP_SIP_MASK]); flower_print_ip4_addr("arp_tip", tb[TCA_FLOWER_KEY_ARP_TIP], tb[TCA_FLOWER_KEY_ARP_TIP_MASK]); flower_print_arp_op("arp_op", tb[TCA_FLOWER_KEY_ARP_OP], tb[TCA_FLOWER_KEY_ARP_OP_MASK]); flower_print_eth_addr("arp_sha", tb[TCA_FLOWER_KEY_ARP_SHA], tb[TCA_FLOWER_KEY_ARP_SHA_MASK]); flower_print_eth_addr("arp_tha", tb[TCA_FLOWER_KEY_ARP_THA], tb[TCA_FLOWER_KEY_ARP_THA_MASK]); flower_print_ip_addr("enc_dst_ip", tb[TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] ? htons(ETH_P_IP) : htons(ETH_P_IPV6), tb[TCA_FLOWER_KEY_ENC_IPV4_DST], tb[TCA_FLOWER_KEY_ENC_IPV4_DST_MASK], tb[TCA_FLOWER_KEY_ENC_IPV6_DST], tb[TCA_FLOWER_KEY_ENC_IPV6_DST_MASK]); flower_print_ip_addr("enc_src_ip", tb[TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] ? htons(ETH_P_IP) : htons(ETH_P_IPV6), tb[TCA_FLOWER_KEY_ENC_IPV4_SRC], tb[TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK], tb[TCA_FLOWER_KEY_ENC_IPV6_SRC], tb[TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK]); flower_print_key_id("enc_key_id", tb[TCA_FLOWER_KEY_ENC_KEY_ID]); flower_print_port("enc_dst_port", tb[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]); flower_print_ip_attr("enc_tos", tb[TCA_FLOWER_KEY_ENC_IP_TOS], tb[TCA_FLOWER_KEY_ENC_IP_TOS_MASK]); flower_print_ip_attr("enc_ttl", tb[TCA_FLOWER_KEY_ENC_IP_TTL], tb[TCA_FLOWER_KEY_ENC_IP_TTL_MASK]); flower_print_enc_opts("enc_opt", tb[TCA_FLOWER_KEY_ENC_OPTS], tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]); flower_print_matching_flags("ip_flags", FLOWER_IP_FLAGS, tb[TCA_FLOWER_KEY_FLAGS], tb[TCA_FLOWER_KEY_FLAGS_MASK]); close_json_object(); if (tb[TCA_FLOWER_FLAGS]) { __u32 flags = rta_getattr_u32(tb[TCA_FLOWER_FLAGS]); if (flags & TCA_CLS_FLAGS_SKIP_HW) print_bool(PRINT_ANY, "skip_hw", "\n skip_hw", true); if (flags & TCA_CLS_FLAGS_SKIP_SW) print_bool(PRINT_ANY, "skip_sw", "\n skip_sw", true); if (flags & TCA_CLS_FLAGS_IN_HW) { print_bool(PRINT_ANY, "in_hw", "\n in_hw", true); if (tb[TCA_FLOWER_IN_HW_COUNT]) { __u32 count = rta_getattr_u32(tb[TCA_FLOWER_IN_HW_COUNT]); print_uint(PRINT_ANY, "in_hw_count", " in_hw_count %u", count); } } else if (flags & TCA_CLS_FLAGS_NOT_IN_HW) print_bool(PRINT_ANY, "not_in_hw", "\n not_in_hw", true); } if (tb[TCA_FLOWER_ACT]) tc_print_action(f, tb[TCA_FLOWER_ACT], 0); return 0; } struct filter_util flower_filter_util = { .id = "flower", .parse_fopt = flower_parse_opt, .print_fopt = flower_print_opt, };