diff options
Diffstat (limited to 'bits')
| -rw-r--r-- | bits/in.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/bits/in.h b/bits/in.h index 7ce455fb6c..10aa2a71c5 100644 --- a/bits/in.h +++ b/bits/in.h @@ -44,6 +44,18 @@ #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ +/* IP_MTU_DISCOVER arguments. */ +#define IP_PMTUDISC_DONT 0 /* Never send DF frames. */ +#define IP_PMTUDISC_WANT 1 /* Use per route hints. */ +#define IP_PMTUDISC_DO 2 /* Always DF. */ +#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu. */ +/* Always use interface mtu (ignores dst pmtu) but don't set DF flag. + Also incoming ICMP frag_needed notifications will be ignored on + this socket to prevent accepting spoofed ones. */ +#define IP_PMTUDISC_INTERFACE 4 +/* Like IP_PMTUDISC_INTERFACE but allow packets to be fragmented. */ +#define IP_PMTUDISC_OMIT 5 + #ifdef __USE_MISC /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS. The `ip_dst' field is used for the first-hop gateway when using a @@ -88,6 +100,14 @@ struct ip_opts #define IPV6_JOIN_ANYCAST 27 #define IPV6_LEAVE_ANYCAST 28 +/* IPV6_MTU_DISCOVER values. */ +#define IPV6_PMTUDISC_DONT 0 /* Never send DF frames. */ +#define IPV6_PMTUDISC_WANT 1 /* Use per route hints. */ +#define IPV6_PMTUDISC_DO 2 /* Always DF. */ +#define IPV6_PMTUDISC_PROBE 3 /* Ignore dst pmtu. */ +#define IPV6_PMTUDISC_INTERFACE 4 /* See IP_PMTUDISC_INTERFACE. */ +#define IPV6_PMTUDISC_OMIT 5 /* See IP_PMTUDISC_OMIT. */ + /* Advanced API (RFC3542) (1). */ #define IPV6_RECVPKTINFO 49 #define IPV6_PKTINFO 50 |