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ila: Support for checksum neutral translation

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Add configuration of ila LWT tunnels for checksum mode including
checksum neutral translation.

Signed-off-by: Tom Herbert <tom@herbertland.com>
This commit is contained in:
Tom Herbert 2016-08-04 13:34:53 -07:00 committed by Stephen Hemminger
parent 6fcf36c9c6
commit ed67f83806
1 changed files with 56 additions and 2 deletions
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58
ip/iproute_lwtunnel.c
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@ -90,6 +90,32 @@ static void print_encap_ip(FILE *fp, struct rtattr *encap)
fprintf(fp, "tos %d ", rta_getattr_u8(tb[LWTUNNEL_IP_TOS]));
}
static char *ila_csum_mode2name(__u8 csum_mode)
{
switch (csum_mode) {
case ILA_CSUM_ADJUST_TRANSPORT:
return "adj-transport";
case ILA_CSUM_NEUTRAL_MAP:
return "neutral-map";
case ILA_CSUM_NO_ACTION:
return "no-action";
default:
return "unknown";
}
}
static __u8 ila_csum_name2mode(char *name)
{
if (strcmp(name, "adj-transport") == 0)
return ILA_CSUM_ADJUST_TRANSPORT;
else if (strcmp(name, "neutral-map") == 0)
return ILA_CSUM_NEUTRAL_MAP;
else if (strcmp(name, "no-action") == 0)
return ILA_CSUM_NO_ACTION;
else
return -1;
}
static void print_encap_ila(FILE *fp, struct rtattr *encap)
{
struct rtattr *tb[ILA_ATTR_MAX+1];
@ -103,6 +129,10 @@ static void print_encap_ila(FILE *fp, struct rtattr *encap)
abuf, sizeof(abuf));
fprintf(fp, " %s ", abuf);
}
if (tb[ILA_ATTR_CSUM_MODE])
fprintf(fp, " csum-mode %s ",
ila_csum_mode2name(rta_getattr_u8(tb[ILA_ATTR_CSUM_MODE])));
}
static void print_encap_ip6(FILE *fp, struct rtattr *encap)
@ -246,10 +276,34 @@ static int parse_encap_ila(struct rtattr *rta, size_t len,
exit(1);
}
argc--; argv++;
rta_addattr64(rta, 1024, ILA_ATTR_LOCATOR, locator);
*argcp = argc;
*argvp = argv;
while (argc > 0) {
if (strcmp(*argv, "csum-mode") == 0) {
__u8 csum_mode;
NEXT_ARG();
csum_mode = ila_csum_name2mode(*argv);
if (csum_mode < 0)
invarg("\"csum-mode\" value is invalid\n", *argv);
rta_addattr8(rta, 1024, ILA_ATTR_CSUM_MODE, csum_mode);
argc--; argv++;
} else {
break;
}
}
/* argv is currently the first unparsed argument,
* but the lwt_parse_encap() caller will move to the next,
* so step back
*/
*argcp = argc + 1;
*argvp = argv - 1;
return 0;
}