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-rw-r--r--ip/iplink_geneve.c250
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);
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 06:04:25 +0000