diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libct.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/libct.c b/src/libct.c index e03c02a..a3560d2 100644 --- a/src/libct.c +++ b/src/libct.c @@ -109,6 +109,30 @@ static void parse_protoinfo(struct nfattr *attr, struct ctnl_conntrack *ct) h->parse_protoinfo(tb, ct); } +/* Pablo: What is the equivalence of be64_to_cpu in userspace? + * + * Harald: Good question. I don't think there's a standard way [yet?], + * so I'd suggest manually implementing it by "#if little endian" bitshift + * operations in C (at least for now). + * + * All the payload of any nfattr will always be in network byte order. + * This would allow easy transport over a real network in the future + * (e.g. jamal's netlink2). + * + * Pablo: I've called it __be64_to_cpu instead of be64_to_cpu, since maybe + * there will one in the userspace headers someday. We don't want to + * pollute POSIX space naming, + */ + +#include <byteswap.h> +#if __BYTE_ORDER == __BIG_ENDIAN +# define __be64_to_cpu(x) (x) +# else +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define __be64_to_cpu(x) __bswap_64(x) +# endif +#endif + static void parse_counters(struct nfattr *attr, struct ctnl_conntrack *ct, enum ctattr_type parent) { @@ -119,10 +143,12 @@ static void parse_counters(struct nfattr *attr, struct ctnl_conntrack *ct, nfnl_parse_nested(tb, CTA_COUNTERS_MAX, attr); if (tb[CTA_COUNTERS_PACKETS-1]) ct->counters[CTNL_DIR_ORIGINAL].packets - = *(u_int64_t *)NFA_DATA(tb[CTA_COUNTERS_PACKETS-1]); + = __be64_to_cpu(*(u_int64_t *) + NFA_DATA(tb[CTA_COUNTERS_PACKETS-1])); if (tb[CTA_COUNTERS_BYTES-1]) ct->counters[CTNL_DIR_ORIGINAL].bytes - = *(u_int64_t *)NFA_DATA(tb[CTA_COUNTERS_BYTES-1]); + = __be64_to_cpu(*(u_int64_t *) + NFA_DATA(tb[CTA_COUNTERS_BYTES-1])); } /* Some people seem to like counting in decimal... */ |