diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-20 17:43:29 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-20 17:43:29 -0700 |
commit | db6d8c7a4027b48d797b369a53f8470aaeed7063 (patch) | |
tree | e140c104a89abc2154e1f41a7db8ebecbb6fa0b4 /include/linux/tcp.h | |
parent | 3a533374283aea50eab3976d8a6d30532175f009 (diff) | |
parent | fb65a7c091529bfffb1262515252c0d0f6241c5c (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits)
iucv: Fix bad merging.
net_sched: Add size table for qdiscs
net_sched: Add accessor function for packet length for qdiscs
net_sched: Add qdisc_enqueue wrapper
highmem: Export totalhigh_pages.
ipv6 mcast: Omit redundant address family checks in ip6_mc_source().
net: Use standard structures for generic socket address structures.
ipv6 netns: Make several "global" sysctl variables namespace aware.
netns: Use net_eq() to compare net-namespaces for optimization.
ipv6: remove unused macros from net/ipv6.h
ipv6: remove unused parameter from ip6_ra_control
tcp: fix kernel panic with listening_get_next
tcp: Remove redundant checks when setting eff_sacks
tcp: options clean up
tcp: Fix MD5 signatures for non-linear skbs
sctp: Update sctp global memory limit allocations.
sctp: remove unnecessary byteshifting, calculate directly in big-endian
sctp: Allow only 1 listening socket with SO_REUSEADDR
sctp: Do not leak memory on multiple listen() calls
sctp: Support ipv6only AF_INET6 sockets.
...
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r-- | include/linux/tcp.h | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index b31b6b74aa28..2e2557388e36 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -224,6 +224,12 @@ struct tcp_options_received { u16 mss_clamp; /* Maximal mss, negotiated at connection setup */ }; +/* This is the max number of SACKS that we'll generate and process. It's safe + * to increse this, although since: + * size = TCPOLEN_SACK_BASE_ALIGNED (4) + n * TCPOLEN_SACK_PERBLOCK (8) + * only four options will fit in a standard TCP header */ +#define TCP_NUM_SACKS 4 + struct tcp_request_sock { struct inet_request_sock req; #ifdef CONFIG_TCP_MD5SIG @@ -291,10 +297,9 @@ struct tcp_sock { u32 rcv_ssthresh; /* Current window clamp */ u32 frto_highmark; /* snd_nxt when RTO occurred */ - u8 reordering; /* Packet reordering metric. */ + u16 advmss; /* Advertised MSS */ u8 frto_counter; /* Number of new acks after RTO */ u8 nonagle; /* Disable Nagle algorithm? */ - u8 keepalive_probes; /* num of allowed keep alive probes */ /* RTT measurement */ u32 srtt; /* smoothed round trip time << 3 */ @@ -305,6 +310,10 @@ struct tcp_sock { u32 packets_out; /* Packets which are "in flight" */ u32 retrans_out; /* Retransmitted packets out */ + + u16 urg_data; /* Saved octet of OOB data and control flags */ + u8 urg_mode; /* In urgent mode */ + u8 ecn_flags; /* ECN status bits. */ /* * Options received (usually on last packet, some only on SYN packets). */ @@ -320,13 +329,24 @@ struct tcp_sock { u32 snd_cwnd_used; u32 snd_cwnd_stamp; - struct sk_buff_head out_of_order_queue; /* Out of order segments go here */ - u32 rcv_wnd; /* Current receiver window */ u32 write_seq; /* Tail(+1) of data held in tcp send buffer */ u32 pushed_seq; /* Last pushed seq, required to talk to windows */ + u32 lost_out; /* Lost packets */ + u32 sacked_out; /* SACK'd packets */ + u32 fackets_out; /* FACK'd packets */ + u32 tso_deferred; + u32 bytes_acked; /* Appropriate Byte Counting - RFC3465 */ -/* SACKs data */ + /* from STCP, retrans queue hinting */ + struct sk_buff* lost_skb_hint; + struct sk_buff *scoreboard_skb_hint; + struct sk_buff *retransmit_skb_hint; + struct sk_buff *forward_skb_hint; + + struct sk_buff_head out_of_order_queue; /* Out of order segments go here */ + + /* SACKs data, these 2 need to be together (see tcp_build_and_update_options) */ struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */ struct tcp_sack_block selective_acks[4]; /* The SACKS themselves*/ @@ -337,23 +357,14 @@ struct tcp_sock { * sacked_out > 0) */ - /* from STCP, retrans queue hinting */ - struct sk_buff* lost_skb_hint; - - struct sk_buff *scoreboard_skb_hint; - struct sk_buff *retransmit_skb_hint; - struct sk_buff *forward_skb_hint; - int lost_cnt_hint; int retransmit_cnt_hint; u32 lost_retrans_low; /* Sent seq after any rxmit (lowest) */ - u16 advmss; /* Advertised MSS */ + u8 reordering; /* Packet reordering metric. */ + u8 keepalive_probes; /* num of allowed keep alive probes */ u32 prior_ssthresh; /* ssthresh saved at recovery start */ - u32 lost_out; /* Lost packets */ - u32 sacked_out; /* SACK'd packets */ - u32 fackets_out; /* FACK'd packets */ u32 high_seq; /* snd_nxt at onset of congestion */ u32 retrans_stamp; /* Timestamp of the last retransmit, @@ -361,23 +372,16 @@ struct tcp_sock { * the first SYN. */ u32 undo_marker; /* tracking retrans started here. */ int undo_retrans; /* number of undoable retransmissions. */ + u32 total_retrans; /* Total retransmits for entire connection */ + u32 urg_seq; /* Seq of received urgent pointer */ - u16 urg_data; /* Saved octet of OOB data and control flags */ - u8 urg_mode; /* In urgent mode */ - u8 ecn_flags; /* ECN status bits. */ u32 snd_up; /* Urgent pointer */ - u32 total_retrans; /* Total retransmits for entire connection */ - u32 bytes_acked; /* Appropriate Byte Counting - RFC3465 */ - unsigned int keepalive_time; /* time before keep alive takes place */ unsigned int keepalive_intvl; /* time interval between keep alive probes */ - int linger2; unsigned long last_synq_overflow; - u32 tso_deferred; - /* Receiver side RTT estimation */ struct { u32 rtt; @@ -405,6 +409,8 @@ struct tcp_sock { /* TCP MD5 Signagure Option information */ struct tcp_md5sig_info *md5sig_info; #endif + + int linger2; }; static inline struct tcp_sock *tcp_sk(const struct sock *sk) |