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* [glibc] [hurd] Add MTU_DISCOVER values
@ 2023-02-15 14:14 Samuel Thibault
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From: Samuel Thibault @ 2023-02-15 14:14 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4738bc218510392ba640c11b14badee345ff63df
commit 4738bc218510392ba640c11b14badee345ff63df
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed Feb 15 15:13:19 2023 +0100
[hurd] Add MTU_DISCOVER values
Diff:
---
bits/in.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
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
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