aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/tcp.h
diff options
context:
space:
mode:
authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-11-14 22:07:45 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 00:22:39 -0500
commitcfb6eeb4c860592edd123fdea908d23c6ad1c7dc (patch)
tree361c073622faa540ef6602ef1b0a6e8c0a17fc60 /include/linux/tcp.h
parentbf6bce71eae386dbc37f93af7e5ad173450d9945 (diff)
[TCP]: MD5 Signature Option (RFC2385) support.
Based on implementation by Rick Payne. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h35
1 files changed, 32 insertions, 3 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 2d36f6db3706..0aecfc955591 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -19,6 +19,7 @@
19 19
20#include <linux/types.h> 20#include <linux/types.h>
21#include <asm/byteorder.h> 21#include <asm/byteorder.h>
22#include <linux/socket.h>
22 23
23struct tcphdr { 24struct tcphdr {
24 __be16 source; 25 __be16 source;
@@ -94,6 +95,7 @@ enum {
94#define TCP_INFO 11 /* Information about this connection. */ 95#define TCP_INFO 11 /* Information about this connection. */
95#define TCP_QUICKACK 12 /* Block/reenable quick acks */ 96#define TCP_QUICKACK 12 /* Block/reenable quick acks */
96#define TCP_CONGESTION 13 /* Congestion control algorithm */ 97#define TCP_CONGESTION 13 /* Congestion control algorithm */
98#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */
97 99
98#define TCPI_OPT_TIMESTAMPS 1 100#define TCPI_OPT_TIMESTAMPS 1
99#define TCPI_OPT_SACK 2 101#define TCPI_OPT_SACK 2
@@ -157,6 +159,17 @@ struct tcp_info
157 __u32 tcpi_total_retrans; 159 __u32 tcpi_total_retrans;
158}; 160};
159 161
162/* for TCP_MD5SIG socket option */
163#define TCP_MD5SIG_MAXKEYLEN 80
164
165struct tcp_md5sig {
166 struct __kernel_sockaddr_storage tcpm_addr; /* address associated */
167 __u16 __tcpm_pad1; /* zero */
168 __u16 tcpm_keylen; /* key length */
169 __u32 __tcpm_pad2; /* zero */
170 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* key (binary) */
171};
172
160#ifdef __KERNEL__ 173#ifdef __KERNEL__
161 174
162#include <linux/skbuff.h> 175#include <linux/skbuff.h>
@@ -197,9 +210,13 @@ struct tcp_options_received {
197}; 210};
198 211
199struct tcp_request_sock { 212struct tcp_request_sock {
200 struct inet_request_sock req; 213 struct inet_request_sock req;
201 __u32 rcv_isn; 214#ifdef CONFIG_TCP_MD5SIG
202 __u32 snt_isn; 215 /* Only used by TCP MD5 Signature so far. */
216 struct tcp_request_sock_ops *af_specific;
217#endif
218 __u32 rcv_isn;
219 __u32 snt_isn;
203}; 220};
204 221
205static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req) 222static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req)
@@ -363,6 +380,14 @@ struct tcp_sock {
363 __u32 probe_seq_start; 380 __u32 probe_seq_start;
364 __u32 probe_seq_end; 381 __u32 probe_seq_end;
365 } mtu_probe; 382 } mtu_probe;
383
384#ifdef CONFIG_TCP_MD5SIG
385/* TCP AF-Specific parts; only used by MD5 Signature support so far */
386 struct tcp_sock_af_ops *af_specific;
387
388/* TCP MD5 Signagure Option information */
389 struct tcp_md5sig_info *md5sig_info;
390#endif
366}; 391};
367 392
368static inline struct tcp_sock *tcp_sk(const struct sock *sk) 393static inline struct tcp_sock *tcp_sk(const struct sock *sk)
@@ -377,6 +402,10 @@ struct tcp_timewait_sock {
377 __u32 tw_rcv_wnd; 402 __u32 tw_rcv_wnd;
378 __u32 tw_ts_recent; 403 __u32 tw_ts_recent;
379 long tw_ts_recent_stamp; 404 long tw_ts_recent_stamp;
405#ifdef CONFIG_TCP_MD5SIG
406 __u16 tw_md5_keylen;
407 __u8 tw_md5_key[TCP_MD5SIG_MAXKEYLEN];
408#endif
380}; 409};
381 410
382static inline struct tcp_timewait_sock *tcp_twsk(const struct sock *sk) 411static inline struct tcp_timewait_sock *tcp_twsk(const struct sock *sk)