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Rearrange fields in struct syncache and syncache_head to make them more
cache line friendly. Sponsored by: TCP/IP Optimization Fundraise 2005
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=159698
@ -245,14 +245,16 @@ struct tcpopt {
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#ifdef _NETINET_IN_PCB_H_
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struct syncache {
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struct mbuf *sc_ipopts; /* source route */
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TAILQ_ENTRY(syncache) sc_hash;
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struct in_conninfo sc_inc; /* addresses */
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u_long sc_rxttime; /* retransmit time */
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u_int16_t sc_rxmits; /* retransmit counter */
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u_int32_t sc_tsrecent;
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u_int32_t sc_flowlabel; /* IPv6 flowlabel */
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tcp_seq sc_irs; /* seq from peer */
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tcp_seq sc_iss; /* our ISS */
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u_long sc_rxttime; /* retransmit time */
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u_int16_t sc_rxmits; /* retransmit counter */
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struct mbuf *sc_ipopts; /* source route */
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u_int16_t sc_peer_mss; /* peer's MSS */
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u_int16_t sc_wnd; /* advertised window */
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@ -267,12 +269,11 @@ struct syncache {
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#define SCF_UNREACH 0x10 /* icmp unreachable received */
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#define SCF_SIGNATURE 0x20 /* send MD5 digests */
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#define SCF_SACK 0x80 /* send SACK option */
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TAILQ_ENTRY(syncache) sc_hash;
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};
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struct syncache_head {
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TAILQ_HEAD(sch_head, syncache) sch_bucket;
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struct mtx sch_mtx;
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TAILQ_HEAD(sch_head, syncache) sch_bucket;
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struct callout sch_timer;
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int sch_nextc;
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u_int sch_length;
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