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Message-ID: <1470778899-2854697-5-git-send-email-tom@herbertland.com>
Date: Tue, 9 Aug 2016 14:41:38 -0700
From: Tom Herbert <tom@...bertland.com>
To: <stephen@...workplumber.org>, <netdev@...r.kernel.org>
CC: <kernel-team@...com>, Tom Herbert <tom@...bertland.com>
Subject: [PATCH iproute v3 4/5] gre6: Support for fou encapsulation
Signed-off-by: Tom Herbert <tom@...bertland.com>
---
ip/link_gre.c | 2 +-
ip/link_gre6.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 102 insertions(+), 1 deletion(-)
diff --git a/ip/link_gre.c b/ip/link_gre.c
index 5dc4067..3b99e56 100644
--- a/ip/link_gre.c
+++ b/ip/link_gre.c
@@ -429,7 +429,7 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
fputs("external ", f);
if (tb[IFLA_GRE_ENCAP_TYPE] &&
- *(__u16 *)RTA_DATA(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
+ rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
__u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);
__u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]);
__u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]);
diff --git a/ip/link_gre6.c b/ip/link_gre6.c
index 6767ef6..d00db1f 100644
--- a/ip/link_gre6.c
+++ b/ip/link_gre6.c
@@ -38,6 +38,9 @@ static void print_usage(FILE *f)
fprintf(f, " [ hoplimit TTL ] [ encaplimit ELIM ]\n");
fprintf(f, " [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n");
fprintf(f, " [ dscp inherit ] [ dev PHYS_DEV ]\n");
+ fprintf(f, " [ noencap ] [ encap { fou | gue | none } ]\n");
+ fprintf(f, " [ encap-sport PORT ] [ encap-dport PORT ]\n");
+ fprintf(f, " [ [no]encap-csum ] [ [no]encap-csum6 ] [ [no]encap-remcsum ]\n");
fprintf(f, "\n");
fprintf(f, "Where: NAME := STRING\n");
fprintf(f, " ADDR := IPV6_ADDRESS\n");
@@ -86,6 +89,10 @@ static int gre_parse_opt(struct link_util *lu, int argc, char **argv,
unsigned int flags = 0;
__u8 hop_limit = DEFAULT_TNL_HOP_LIMIT;
__u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT;
+ __u16 encaptype = 0;
+ __u16 encapflags = TUNNEL_ENCAP_FLAG_CSUM6;
+ __u16 encapsport = 0;
+ __u16 encapdport = 0;
int len;
if (!(n->nlmsg_flags & NLM_F_CREATE)) {
@@ -146,6 +153,18 @@ get_failed:
if (greinfo[IFLA_GRE_FLAGS])
flags = rta_getattr_u32(greinfo[IFLA_GRE_FLAGS]);
+
+ if (greinfo[IFLA_GRE_ENCAP_TYPE])
+ encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]);
+
+ if (greinfo[IFLA_GRE_ENCAP_FLAGS])
+ encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]);
+
+ if (greinfo[IFLA_GRE_ENCAP_SPORT])
+ encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]);
+
+ if (greinfo[IFLA_GRE_ENCAP_DPORT])
+ encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]);
}
while (argc > 0) {
@@ -277,6 +296,40 @@ get_failed:
if (strcmp(*argv, "inherit") != 0)
invarg("not inherit", *argv);
flags |= IP6_TNL_F_RCV_DSCP_COPY;
+ } else if (strcmp(*argv, "noencap") == 0) {
+ encaptype = TUNNEL_ENCAP_NONE;
+ } else if (strcmp(*argv, "encap") == 0) {
+ NEXT_ARG();
+ if (strcmp(*argv, "fou") == 0)
+ encaptype = TUNNEL_ENCAP_FOU;
+ else if (strcmp(*argv, "gue") == 0)
+ encaptype = TUNNEL_ENCAP_GUE;
+ else if (strcmp(*argv, "none") == 0)
+ encaptype = TUNNEL_ENCAP_NONE;
+ else
+ invarg("Invalid encap type.", *argv);
+ } else if (strcmp(*argv, "encap-sport") == 0) {
+ NEXT_ARG();
+ if (strcmp(*argv, "auto") == 0)
+ encapsport = 0;
+ else if (get_u16(&encapsport, *argv, 0))
+ invarg("Invalid source port.", *argv);
+ } else if (strcmp(*argv, "encap-dport") == 0) {
+ NEXT_ARG();
+ if (get_u16(&encapdport, *argv, 0))
+ invarg("Invalid destination port.", *argv);
+ } else if (strcmp(*argv, "encap-csum") == 0) {
+ encapflags |= TUNNEL_ENCAP_FLAG_CSUM;
+ } else if (strcmp(*argv, "noencap-csum") == 0) {
+ encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM;
+ } else if (strcmp(*argv, "encap-udp6-csum") == 0) {
+ encapflags |= TUNNEL_ENCAP_FLAG_CSUM6;
+ } else if (strcmp(*argv, "noencap-udp6-csum") == 0) {
+ encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6;
+ } else if (strcmp(*argv, "encap-remcsum") == 0) {
+ encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
+ } else if (strcmp(*argv, "noencap-remcsum") == 0) {
+ encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
} else
usage();
argc--; argv++;
@@ -295,6 +348,11 @@ get_failed:
addattr_l(n, 1024, IFLA_GRE_FLOWINFO, &flowinfo, 4);
addattr_l(n, 1024, IFLA_GRE_FLAGS, &flowinfo, 4);
+ addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype);
+ addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags);
+ addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport));
+ addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport));
+
return 0;
}
@@ -393,6 +451,49 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
fputs("icsum ", f);
if (oflags & GRE_CSUM)
fputs("ocsum ", f);
+
+ if (tb[IFLA_GRE_ENCAP_TYPE] &&
+ rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
+ __u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);
+ __u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]);
+ __u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]);
+ __u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]);
+
+ fputs("encap ", f);
+ switch (type) {
+ case TUNNEL_ENCAP_FOU:
+ fputs("fou ", f);
+ break;
+ case TUNNEL_ENCAP_GUE:
+ fputs("gue ", f);
+ break;
+ default:
+ fputs("unknown ", f);
+ break;
+ }
+
+ if (sport == 0)
+ fputs("encap-sport auto ", f);
+ else
+ fprintf(f, "encap-sport %u", ntohs(sport));
+
+ fprintf(f, "encap-dport %u ", ntohs(dport));
+
+ if (flags & TUNNEL_ENCAP_FLAG_CSUM)
+ fputs("encap-csum ", f);
+ else
+ fputs("noencap-csum ", f);
+
+ if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
+ fputs("encap-csum6 ", f);
+ else
+ fputs("noencap-csum6 ", f);
+
+ if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
+ fputs("encap-remcsum ", f);
+ else
+ fputs("noencap-remcsum ", f);
+ }
}
static void gre_print_help(struct link_util *lu, int argc, char **argv,
--
2.8.0.rc2
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