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authorJohn Heffner <jheffner@psc.edu>2006-03-21 04:53:41 +0300
committerDavid S. Miller <davem@davemloft.net>2006-03-21 04:53:41 +0300
commit5d424d5a674f782d0659a3b66d951f412901faee (patch)
tree579871172044e02e626a90388d19ec55cf2d1fc4 /include/net/inet_connection_sock.h
parent1d60290f27e7dc4bce2c43922d0bfa9abd246fc9 (diff)
downloadlinux-5d424d5a674f782d0659a3b66d951f412901faee.tar.xz
[TCP]: MTU probing
Implementation of packetization layer path mtu discovery for TCP, based on the internet-draft currently found at <http://www.ietf.org/internet-drafts/draft-ietf-pmtud-method-05.txt>. Signed-off-by: John Heffner <jheffner@psc.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_connection_sock.h')
-rw-r--r--include/net/inet_connection_sock.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index fa587c94e9d0..b3abe33f4e5f 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -72,6 +72,7 @@ struct inet_connection_sock_af_ops {
* @icsk_probes_out: unanswered 0 window probes
* @icsk_ext_hdr_len: Network protocol overhead (IP/IPv6 options)
* @icsk_ack: Delayed ACK control data
+ * @icsk_mtup; MTU probing control data
*/
struct inet_connection_sock {
/* inet_sock has to be the first member! */
@@ -104,6 +105,18 @@ struct inet_connection_sock {
__u16 last_seg_size; /* Size of last incoming segment */
__u16 rcv_mss; /* MSS used for delayed ACK decisions */
} icsk_ack;
+ struct {
+ int enabled;
+
+ /* Range of MTUs to search */
+ int search_high;
+ int search_low;
+
+ /* Information on the current probe. */
+ int probe_size;
+ __u32 probe_seq_start;
+ __u32 probe_seq_end;
+ } icsk_mtup;
u32 icsk_ca_priv[16];
#define ICSK_CA_PRIV_SIZE (16 * sizeof(u32))
};