diff options
| author | ume <ume@FreeBSD.org> | 2003-10-29 15:07:04 +0000 |
|---|---|---|
| committer | ume <ume@FreeBSD.org> | 2003-10-29 15:07:04 +0000 |
| commit | b9fecc82d3e55cefb5fd427307272fed377b780a (patch) | |
| tree | ff2af6160ee3c3b0bf6e218dc2107ae003e82cde /sys/netinet/ip.h | |
| parent | f965698ed4683de29221f38b96189223a4cf0b2e (diff) | |
| download | FreeBSD-src-b9fecc82d3e55cefb5fd427307272fed377b780a.zip FreeBSD-src-b9fecc82d3e55cefb5fd427307272fed377b780a.tar.gz | |
add ECN support in layer-3.
- implement the tunnel egress rule in ip_ecn_egress() in ip_ecn.c.
make ip{,6}_ecn_egress() return integer to tell the caller that
this packet should be dropped.
- handle ECN at fragment reassembly in ip_input.c and frag6.c.
Obtained from: KAME
Diffstat (limited to 'sys/netinet/ip.h')
| -rw-r--r-- | sys/netinet/ip.h | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sys/netinet/ip.h b/sys/netinet/ip.h index 24f66ce..025ad08 100644 --- a/sys/netinet/ip.h +++ b/sys/netinet/ip.h @@ -84,10 +84,11 @@ CTASSERT(sizeof (struct ip) == 20); #define IPTOS_THROUGHPUT 0x08 #define IPTOS_RELIABILITY 0x04 #define IPTOS_MINCOST 0x02 -/* ECN bits proposed by Sally Floyd */ -#define IPTOS_CE 0x01 /* congestion experienced */ -#define IPTOS_ECT 0x02 /* ECN-capable transport */ - +#if 1 +/* ECN RFC3168 obsoletes RFC2481, and these will be deprecated soon. */ +#define IPTOS_CE 0x01 +#define IPTOS_ECT 0x02 +#endif /* * Definitions for IP precedence (also in ip_tos) (hopefully unused) @@ -102,6 +103,16 @@ CTASSERT(sizeof (struct ip) == 20); #define IPTOS_PREC_ROUTINE 0x00 /* + * ECN (Explicit Congestion Notification) codepoints in RFC3168 + * mapped to the lower 2 bits of the TOS field. + */ +#define IPTOS_ECN_NOTECT 0x00 /* not-ECT */ +#define IPTOS_ECN_ECT1 0x01 /* ECN-capable transport (1) */ +#define IPTOS_ECN_ECT0 0x02 /* ECN-capable transport (0) */ +#define IPTOS_ECN_CE 0x03 /* congestion experienced */ +#define IPTOS_ECN_MASK 0x03 /* ECN field mask */ + +/* * Definitions for options. */ #define IPOPT_COPIED(o) ((o)&0x80) |
