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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-11-27 14:10:57 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 00:22:46 -0500
commitba4e58eca8aa9473b44fdfd312f26c4a2e7798b3 (patch)
tree700f8f989f48da480beb83b983637cfd2b5a3f67 /include/linux/udp.h
parent6051e2f4fb68fc8e5343db58fa680ece376f405c (diff)
[NET]: Supporting UDP-Lite (RFC 3828) in Linux
This is a revision of the previously submitted patch, which alters the way files are organized and compiled in the following manner: * UDP and UDP-Lite now use separate object files * source file dependencies resolved via header files net/ipv{4,6}/udp_impl.h * order of inclusion files in udp.c/udplite.c adapted accordingly [NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828) This patch adds support for UDP-Lite to the IPv4 stack, provided as an extension to the existing UDPv4 code: * generic routines are all located in net/ipv4/udp.c * UDP-Lite specific routines are in net/ipv4/udplite.c * MIB/statistics support in /proc/net/snmp and /proc/net/udplite * shared API with extensions for partial checksum coverage [NET/IPv6]: Extension for UDP-Lite over IPv6 It extends the existing UDPv6 code base with support for UDP-Lite in the same manner as per UDPv4. In particular, * UDPv6 generic and shared code is in net/ipv6/udp.c * UDP-Litev6 specific extensions are in net/ipv6/udplite.c * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6 * support for IPV6_ADDRFORM * aligned the coding style of protocol initialisation with af_inet6.c * made the error handling in udpv6_queue_rcv_skb consistent; to return `-1' on error on all error cases * consolidation of shared code [NET]: UDP-Lite Documentation and basic XFRM/Netfilter support The UDP-Lite patch further provides * API documentation for UDP-Lite * basic xfrm support * basic netfilter support for IPv4 and IPv6 (LOG target) Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/udp.h')
-rw-r--r--include/linux/udp.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/udp.h b/include/linux/udp.h
index 014b41d1e308..564f3b050105 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -38,6 +38,7 @@ struct udphdr {
38#include <linux/types.h> 38#include <linux/types.h>
39 39
40#include <net/inet_sock.h> 40#include <net/inet_sock.h>
41#define UDP_HTABLE_SIZE 128
41 42
42struct udp_sock { 43struct udp_sock {
43 /* inet_sock has to be the first member */ 44 /* inet_sock has to be the first member */
@@ -50,12 +51,23 @@ struct udp_sock {
50 * when the socket is uncorked. 51 * when the socket is uncorked.
51 */ 52 */
52 __u16 len; /* total length of pending frames */ 53 __u16 len; /* total length of pending frames */
54 /*
55 * Fields specific to UDP-Lite.
56 */
57 __u16 pcslen;
58 __u16 pcrlen;
59/* indicator bits used by pcflag: */
60#define UDPLITE_BIT 0x1 /* set by udplite proto init function */
61#define UDPLITE_SEND_CC 0x2 /* set via udplite setsockopt */
62#define UDPLITE_RECV_CC 0x4 /* set via udplite setsocktopt */
63 __u8 pcflag; /* marks socket as UDP-Lite if > 0 */
53}; 64};
54 65
55static inline struct udp_sock *udp_sk(const struct sock *sk) 66static inline struct udp_sock *udp_sk(const struct sock *sk)
56{ 67{
57 return (struct udp_sock *)sk; 68 return (struct udp_sock *)sk;
58} 69}
70#define IS_UDPLITE(__sk) (udp_sk(__sk)->pcflag)
59 71
60#endif 72#endif
61 73