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ndisc: add comment and static assert for struct sizes for ndisc packet layout

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Obviously, there is no change in behavior. It's just an assertion.

(cherry picked from commit 96d7ddc865)
This commit is contained in:
Thomas Haller 2021-01-12 16:53:22 +01:00
parent ec0fc593fa
commit dc0d4ec817
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1 changed files with 16 additions and 0 deletions
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16
src/ndisc/nm-lndp-ndisc.c
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@ -333,7 +333,12 @@ _ndp_msg_add_option(struct ndp_msg *msg, int len)
return ret;
}
/*****************************************************************************/
/* "Recursive DNS Server Option" at https://tools.ietf.org/html/rfc8106#section-5.1 */
#define NM_ND_OPT_RDNSS 25
typedef struct {
struct nd_opt_hdr header;
uint16_t reserved;
@ -341,7 +346,14 @@ typedef struct {
struct in6_addr addrs[0];
} NMLndpRdnssOption;
G_STATIC_ASSERT(sizeof(NMLndpRdnssOption) == 8u);
/*****************************************************************************/
/* "DNS Search List Option" at https://tools.ietf.org/html/rfc8106#section-5.2 */
#define NM_ND_OPT_DNSSL 31
typedef struct {
struct nd_opt_hdr header;
uint16_t reserved;
@ -349,6 +361,10 @@ typedef struct {
char search_list[0];
} NMLndpDnsslOption;
G_STATIC_ASSERT(sizeof(NMLndpDnsslOption) == 8u);
/*****************************************************************************/
static gboolean
send_ra(NMNDisc *ndisc, GError **error)
{