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Code Issues Releases Wiki Activity

flow: New function is_nd().

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This simplifies a few pieces of code and will acquire another user in an
upcoming commit.

Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Ben Pfaff
2016-07-02 11:35:29 -07:00
parent 59ae5a6e4e
commit c17fcc0aed
5 changed files with 28 additions and 22 deletions
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21
lib/flow.h
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@@ -18,6 +18,7 @@
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
@@ -856,6 +857,26 @@ static inline bool is_icmpv6(const struct flow *flow,
return false;
}
static inline bool is_nd(const struct flow *flow,
struct flow_wildcards *wc)
{
if (is_icmpv6(flow, wc)) {
if (wc) {
memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
}
if (flow->tp_dst != htons(0)) {
return false;
}
if (wc) {
memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
}
return (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
flow->tp_src == htons(ND_NEIGHBOR_ADVERT));
}
return false;
}
static inline bool is_igmp(const struct flow *flow, struct flow_wildcards *wc)
{
if (flow->dl_type == htons(ETH_TYPE_IP)) {