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gre: add support for collect metadata flag

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This patch add support for IFLA_GRE_COLLECT_METADATA via the
'external' keyword to the gre link.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni 2015-12-18 10:50:37 +01:00 committed by Stephen Hemminger
parent e79c327edd
commit 926b39e1fe
1 changed files with 11 additions and 0 deletions
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11
ip/link_gre.c
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@ -74,6 +74,7 @@ static int gre_parse_opt(struct link_util *lu, int argc, char **argv,
__u16 encapflags = 0;
__u16 encapsport = 0;
__u16 encapdport = 0;
__u8 metadata = 0;
if (!(n->nlmsg_flags & NLM_F_CREATE)) {
memset(&req, 0, sizeof(req));
@ -148,6 +149,9 @@ get_failed:
encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]);
if (greinfo[IFLA_GRE_ENCAP_DPORT])
encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]);
if (greinfo[IFLA_GRE_COLLECT_METADATA])
metadata = 1;
}
while (argc > 0) {
@ -291,6 +295,8 @@ get_failed:
encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
} else if (strcmp(*argv, "noencap-remcsum") == 0) {
encapflags |= ~TUNNEL_ENCAP_FLAG_REMCSUM;
} else if (strcmp(*argv, "external") == 0) {
metadata = 1;
} else
usage();
argc--; argv++;
@ -325,6 +331,8 @@ get_failed:
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));
if (metadata)
addattr_l(n, 1024, IFLA_GRE_COLLECT_METADATA, NULL, 0);
return 0;
}
@ -413,6 +421,9 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
if (oflags & GRE_CSUM)
fputs("ocsum ", f);
if (tb[IFLA_GRE_COLLECT_METADATA])
fputs("external ", f);
if (tb[IFLA_GRE_ENCAP_TYPE] &&
*(__u16 *)RTA_DATA(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
__u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);