diff options
Diffstat (limited to 'ip/iplink_geneve.c')
-rw-r--r-- | ip/iplink_geneve.c | 250 |
1 files changed, 218 insertions, 32 deletions
diff --git a/ip/iplink_geneve.c b/ip/iplink_geneve.c index 13454795..f0f1d1c7 100644 --- a/ip/iplink_geneve.c +++ b/ip/iplink_geneve.c @@ -15,15 +15,28 @@ #include "utils.h" #include "ip_common.h" +#define GENEVE_ATTRSET(attrs, type) (((attrs) & (1L << (type))) != 0) + static void print_explain(FILE *f) { - fprintf(f, "Usage: ... geneve id VNI remote ADDR\n"); - fprintf(f, " [ ttl TTL ] [ tos TOS ]\n"); - fprintf(f, "\n"); - fprintf(f, "Where: VNI := 0-16777215\n"); - fprintf(f, " ADDR := IP_ADDRESS\n"); - fprintf(f, " TOS := { NUMBER | inherit }\n"); - fprintf(f, " TTL := { 1..255 | inherit }\n"); + fprintf(f, + "Usage: ... geneve id VNI\n" + " remote ADDR\n" + " [ ttl TTL ]\n" + " [ tos TOS ]\n" + " [ flowlabel LABEL ]\n" + " [ dstport PORT ]\n" + " [ [no]external ]\n" + " [ [no]udpcsum ]\n" + " [ [no]udp6zerocsumtx ]\n" + " [ [no]udp6zerocsumrx ]\n" + "\n" + "Where: VNI := 0-16777215\n" + " ADDR := IP_ADDRESS\n" + " TOS := { NUMBER | inherit }\n" + " TTL := { 1..255 | inherit }\n" + " LABEL := 0-1048575\n" + ); } static void explain(void) @@ -31,26 +44,46 @@ static void explain(void) print_explain(stderr); } +static void check_duparg(__u64 *attrs, int type, const char *key, + const char *argv) +{ + if (!GENEVE_ATTRSET(*attrs, type)) { + *attrs |= (1L << type); + return; + } + duparg2(key, argv); +} + static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, struct nlmsghdr *n) { __u32 vni = 0; - int vni_set = 0; __u32 daddr = 0; struct in6_addr daddr6 = IN6ADDR_ANY_INIT; + __u32 label = 0; __u8 ttl = 0; __u8 tos = 0; + __u16 dstport = 0; + bool metadata = 0; + __u8 udpcsum = 0; + __u8 udp6zerocsumtx = 0; + __u8 udp6zerocsumrx = 0; + __u64 attrs = 0; + bool set_op = (n->nlmsg_type == RTM_NEWLINK && + !(n->nlmsg_flags & NLM_F_CREATE)); while (argc > 0) { if (!matches(*argv, "id") || !matches(*argv, "vni")) { NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_ID, "id", *argv); if (get_u32(&vni, *argv, 0) || vni >= 1u << 24) invarg("invalid id", *argv); - vni_set = 1; } else if (!matches(*argv, "remote")) { NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_REMOTE, "remote", + *argv); if (!inet_get_addr(*argv, &daddr, &daddr6)) { fprintf(stderr, "Invalid address \"%s\"\n", *argv); return -1; @@ -59,9 +92,10 @@ static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, invarg("invalid remote address", *argv); } else if (!matches(*argv, "ttl") || !matches(*argv, "hoplimit")) { - unsigned uval; + unsigned int uval; NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_TTL, "ttl", *argv); if (strcmp(*argv, "inherit") != 0) { if (get_unsigned(&uval, *argv, 0)) invarg("invalid TTL", *argv); @@ -74,12 +108,62 @@ static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, __u32 uval; NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_TOS, "tos", *argv); if (strcmp(*argv, "inherit") != 0) { if (rtnl_dsfield_a2n(&uval, *argv)) invarg("bad TOS value", *argv); tos = uval; } else tos = 1; + } else if (!matches(*argv, "label") || + !matches(*argv, "flowlabel")) { + __u32 uval; + + NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_LABEL, "flowlabel", + *argv); + if (get_u32(&uval, *argv, 0) || + (uval & ~LABEL_MAX_MASK)) + invarg("invalid flowlabel", *argv); + label = htonl(uval); + } else if (!matches(*argv, "dstport")) { + NEXT_ARG(); + check_duparg(&attrs, IFLA_GENEVE_PORT, "dstport", + *argv); + if (get_u16(&dstport, *argv, 0)) + invarg("dstport", *argv); + } else if (!matches(*argv, "external")) { + check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA, + *argv, *argv); + metadata = true; + } else if (!matches(*argv, "noexternal")) { + check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA, + *argv, *argv); + metadata = false; + } else if (!matches(*argv, "udpcsum")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv, + *argv); + udpcsum = 1; + } else if (!matches(*argv, "noudpcsum")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv, + *argv); + udpcsum = 0; + } else if (!matches(*argv, "udp6zerocsumtx")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, + *argv, *argv); + udp6zerocsumtx = 1; + } else if (!matches(*argv, "noudp6zerocsumtx")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, + *argv, *argv); + udp6zerocsumtx = 0; + } else if (!matches(*argv, "udp6zerocsumrx")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, + *argv, *argv); + udp6zerocsumrx = 1; + } else if (!matches(*argv, "noudp6zerocsumrx")) { + check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, + *argv, *argv); + udp6zerocsumrx = 0; } else if (matches(*argv, "help") == 0) { explain(); return -1; @@ -91,23 +175,51 @@ static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, argc--, argv++; } - if (!vni_set) { - fprintf(stderr, "geneve: missing virtual network identifier\n"); + if (metadata && GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) { + fprintf(stderr, "geneve: both 'external' and vni cannot be specified\n"); return -1; } - if (!daddr && memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) == 0) { - fprintf(stderr, "geneve: remote link partner not specified\n"); - return -1; + if (!metadata) { + /* parameter checking make sense only for full geneve tunnels */ + if (!GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) { + fprintf(stderr, "geneve: missing virtual network identifier\n"); + return -1; + } + + /* If we are modifying the geneve device, then we only need the + * ID (VNI) to identify the geneve device, and we do not need + * the remote IP. + */ + if (!set_op && !daddr && IN6_IS_ADDR_UNSPECIFIED(&daddr6)) { + fprintf(stderr, "geneve: remote link partner not specified\n"); + return -1; + } } addattr32(n, 1024, IFLA_GENEVE_ID, vni); if (daddr) addattr_l(n, 1024, IFLA_GENEVE_REMOTE, &daddr, 4); - if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0) - addattr_l(n, 1024, IFLA_GENEVE_REMOTE6, &daddr6, sizeof(struct in6_addr)); - addattr8(n, 1024, IFLA_GENEVE_TTL, ttl); - addattr8(n, 1024, IFLA_GENEVE_TOS, tos); + if (!IN6_IS_ADDR_UNSPECIFIED(&daddr6)) { + addattr_l(n, 1024, IFLA_GENEVE_REMOTE6, &daddr6, + sizeof(struct in6_addr)); + } + if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_LABEL)) + addattr32(n, 1024, IFLA_GENEVE_LABEL, label); + if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_TTL)) + addattr8(n, 1024, IFLA_GENEVE_TTL, ttl); + if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_TOS)) + addattr8(n, 1024, IFLA_GENEVE_TOS, tos); + if (dstport) + addattr16(n, 1024, IFLA_GENEVE_PORT, htons(dstport)); + if (metadata) + addattr(n, 1024, IFLA_GENEVE_COLLECT_METADATA); + if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_CSUM)) + addattr8(n, 1024, IFLA_GENEVE_UDP_CSUM, udpcsum); + if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX)) + addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, udp6zerocsumtx); + if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX)) + addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, udp6zerocsumrx); return 0; } @@ -115,7 +227,6 @@ static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, static void geneve_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) { __u32 vni; - char s1[1024]; __u8 tos; if (!tb) @@ -126,35 +237,110 @@ static void geneve_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) return; vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]); - fprintf(f, "id %u ", vni); + print_uint(PRINT_ANY, "id", "id %u ", vni); if (tb[IFLA_GENEVE_REMOTE]) { __be32 addr = rta_getattr_u32(tb[IFLA_GENEVE_REMOTE]); + if (addr) - fprintf(f, "remote %s ", - format_host(AF_INET, 4, &addr, s1, sizeof(s1))); + print_string(PRINT_ANY, + "remote", + "remote %s ", + format_host(AF_INET, 4, &addr)); } else if (tb[IFLA_GENEVE_REMOTE6]) { struct in6_addr addr; + memcpy(&addr, RTA_DATA(tb[IFLA_GENEVE_REMOTE6]), sizeof(struct in6_addr)); - if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0) { - if (IN6_IS_ADDR_MULTICAST(&addr)) - fprintf(f, "remote %s ", - format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1))); + if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) { + if (!IN6_IS_ADDR_MULTICAST(&addr)) + print_string(PRINT_ANY, + "remote6", + "remote %s ", + format_host(AF_INET6, + sizeof(struct in6_addr), + &addr)); } } if (tb[IFLA_GENEVE_TTL]) { __u8 ttl = rta_getattr_u8(tb[IFLA_GENEVE_TTL]); + if (ttl) - fprintf(f, "ttl %d ", ttl); + print_int(PRINT_ANY, "ttl", "ttl %d ", ttl); } if (tb[IFLA_GENEVE_TOS] && (tos = rta_getattr_u8(tb[IFLA_GENEVE_TOS]))) { - if (tos == 1) - fprintf(f, "tos inherit "); - else - fprintf(f, "tos %#x ", tos); + if (is_json_context()) { + print_0xhex(PRINT_JSON, "tos", "%#x", tos); + } else { + if (tos == 1) { + print_string(PRINT_FP, + "tos", + "tos %s ", + "inherit"); + } else { + fprintf(f, "tos %#x ", tos); + } + } + } + + if (tb[IFLA_GENEVE_LABEL]) { + __u32 label = rta_getattr_u32(tb[IFLA_GENEVE_LABEL]); + + if (label) + print_0xhex(PRINT_ANY, + "label", + "flowlabel %#x ", + ntohl(label)); + } + + if (tb[IFLA_GENEVE_PORT]) + print_uint(PRINT_ANY, + "port", + "dstport %u ", + rta_getattr_be16(tb[IFLA_GENEVE_PORT])); + + if (tb[IFLA_GENEVE_COLLECT_METADATA]) + print_bool(PRINT_ANY, "collect_metadata", "external ", true); + + if (tb[IFLA_GENEVE_UDP_CSUM]) { + if (is_json_context()) { + print_bool(PRINT_JSON, + "udp_csum", + NULL, + rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM])); + } else { + if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM])) + fputs("no", f); + fputs("udpcsum ", f); + } + } + + if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]) { + if (is_json_context()) { + print_bool(PRINT_JSON, + "udp_zero_csum6_tx", + NULL, + rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX])); + } else { + if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX])) + fputs("no", f); + fputs("udp6zerocsumtx ", f); + } + } + + if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]) { + if (is_json_context()) { + print_bool(PRINT_JSON, + "udp_zero_csum6_rx", + NULL, + rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX])); + } else { + if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX])) + fputs("no", f); + fputs("udp6zerocsumrx ", f); + } } } |