Declare more TCP globals in tcp_var.h, so that alternative TCP stacks
can use them. Gather all TCP tunables in tcp_var.h in one place and alphabetically sort them, to ease maintainance of the list. Don't copy and paste declarations in tcp_stacks/fastpath.c.
This commit is contained in:
Gleb Smirnoff
parent
ab142b3f49
commit
3bdf4c4274
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=324539
@ -145,7 +145,6 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, delayed_ack, CTLFLAG_VNET | CTLFLAG_RW,
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"Delay ACK to try and piggyback it onto a data packet");
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VNET_DEFINE(int, drop_synfin) = 0;
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#define V_drop_synfin VNET(drop_synfin)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(drop_synfin), 0,
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"Drop TCP packets with SYN+FIN set");
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@ -156,7 +155,6 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc6675_pipe, CTLFLAG_VNET | CTLFLAG_RW,
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"Use calculated pipe/in-flight bytes per RFC 6675");
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VNET_DEFINE(int, tcp_do_rfc3042) = 1;
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#define V_tcp_do_rfc3042 VNET(tcp_do_rfc3042)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3042, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_do_rfc3042), 0,
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"Enable RFC 3042 (Limited Transmit)");
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@ -194,13 +192,11 @@ SYSCTL_INT(_net_inet_tcp_ecn, OID_AUTO, maxretries, CTLFLAG_VNET | CTLFLAG_RW,
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"Max retries before giving up on ECN");
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VNET_DEFINE(int, tcp_insecure_syn) = 0;
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#define V_tcp_insecure_syn VNET(tcp_insecure_syn)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, insecure_syn, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_insecure_syn), 0,
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"Follow RFC793 instead of RFC5961 criteria for accepting SYN packets");
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VNET_DEFINE(int, tcp_insecure_rst) = 0;
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#define V_tcp_insecure_rst VNET(tcp_insecure_rst)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, insecure_rst, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_insecure_rst), 0,
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"Follow RFC793 instead of RFC5961 criteria for accepting RST packets");
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@ -211,19 +207,16 @@ SYSCTL_INT(_net_inet_tcp, TCPCTL_RECVSPACE, recvspace, CTLFLAG_VNET | CTLFLAG_RW
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&VNET_NAME(tcp_recvspace), 0, "Initial receive socket buffer size");
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VNET_DEFINE(int, tcp_do_autorcvbuf) = 1;
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#define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, recvbuf_auto, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_do_autorcvbuf), 0,
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"Enable automatic receive buffer sizing");
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VNET_DEFINE(int, tcp_autorcvbuf_inc) = 16*1024;
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#define V_tcp_autorcvbuf_inc VNET(tcp_autorcvbuf_inc)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, recvbuf_inc, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_autorcvbuf_inc), 0,
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"Incrementor step size of automatic receive buffer");
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VNET_DEFINE(int, tcp_autorcvbuf_max) = 2*1024*1024;
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#define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, recvbuf_max, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_autorcvbuf_max), 0,
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"Max size of automatic receive buffer");
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@ -102,7 +102,6 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, path_mtu_discovery, CTLFLAG_VNET | CTLFLAG_R
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"Enable Path MTU Discovery");
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VNET_DEFINE(int, tcp_do_tso) = 1;
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#define V_tcp_do_tso VNET(tcp_do_tso)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, tso, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_do_tso), 0,
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"Enable TCP Segmentation Offload");
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@ -113,19 +112,16 @@ SYSCTL_INT(_net_inet_tcp, TCPCTL_SENDSPACE, sendspace, CTLFLAG_VNET | CTLFLAG_RW
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&VNET_NAME(tcp_sendspace), 0, "Initial send socket buffer size");
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VNET_DEFINE(int, tcp_do_autosndbuf) = 1;
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#define V_tcp_do_autosndbuf VNET(tcp_do_autosndbuf)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, sendbuf_auto, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_do_autosndbuf), 0,
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"Enable automatic send buffer sizing");
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VNET_DEFINE(int, tcp_autosndbuf_inc) = 8*1024;
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#define V_tcp_autosndbuf_inc VNET(tcp_autosndbuf_inc)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, sendbuf_inc, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_autosndbuf_inc), 0,
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"Incrementor step size of automatic send buffer");
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VNET_DEFINE(int, tcp_autosndbuf_max) = 2*1024*1024;
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#define V_tcp_autosndbuf_max VNET(tcp_autosndbuf_max)
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, sendbuf_max, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_autosndbuf_max), 0,
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"Max size of automatic send buffer");
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@ -133,19 +133,16 @@ SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, enable, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_do_sack), 0, "Enable/Disable TCP SACK support");
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VNET_DEFINE(int, tcp_sack_maxholes) = 128;
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#define V_tcp_sack_maxholes VNET(tcp_sack_maxholes)
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SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, maxholes, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_sack_maxholes), 0,
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"Maximum number of TCP SACK holes allowed per connection");
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VNET_DEFINE(int, tcp_sack_globalmaxholes) = 65536;
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#define V_tcp_sack_globalmaxholes VNET(tcp_sack_globalmaxholes)
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SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, globalmaxholes, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(tcp_sack_globalmaxholes), 0,
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"Global maximum number of TCP SACK holes");
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VNET_DEFINE(int, tcp_sack_globalholes) = 0;
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#define V_tcp_sack_globalholes VNET(tcp_sack_globalholes)
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SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, globalholes, CTLFLAG_VNET | CTLFLAG_RD,
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&VNET_NAME(tcp_sack_globalholes), 0,
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"Global number of TCP SACK holes currently allocated");
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@ -120,21 +120,6 @@ __FBSDID("$FreeBSD$");
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#include <security/mac/mac_framework.h>
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VNET_DECLARE(int, tcp_autorcvbuf_inc);
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#define V_tcp_autorcvbuf_inc VNET(tcp_autorcvbuf_inc)
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VNET_DECLARE(int, tcp_autorcvbuf_max);
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#define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max)
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VNET_DECLARE(int, tcp_do_rfc3042);
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#define V_tcp_do_rfc3042 VNET(tcp_do_rfc3042)
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VNET_DECLARE(int, tcp_do_autorcvbuf);
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#define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf)
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VNET_DECLARE(int, tcp_insecure_rst);
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#define V_tcp_insecure_rst VNET(tcp_insecure_rst)
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VNET_DECLARE(int, tcp_insecure_syn);
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#define V_tcp_insecure_syn VNET(tcp_insecure_syn)
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VNET_DECLARE(int, drop_synfin);
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#define V_drop_synfin VNET(drop_synfin)
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static void tcp_do_segment_fastslow(struct mbuf *, struct tcphdr *,
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struct socket *, struct tcpcb *, int, int, uint8_t,
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int);
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@ -201,12 +201,6 @@ struct tcpcb {
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#endif /* _KERNEL || _WANT_TCPCB */
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#ifdef _KERNEL
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/*
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* Kernel variables for tcp.
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*/
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VNET_DECLARE(int, tcp_do_rfc1323);
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#define V_tcp_do_rfc1323 VNET(tcp_do_rfc1323)
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struct tcptemp {
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u_char tt_ipgen[40]; /* the size must be of max ip header, now IPv6 */
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struct tcphdr tt_t;
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@ -701,50 +695,83 @@ SYSCTL_DECL(_net_inet_tcp_sack);
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MALLOC_DECLARE(M_TCPLOG);
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#endif
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VNET_DECLARE(struct inpcbhead, tcb); /* queue of active tcpcb's */
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VNET_DECLARE(struct inpcbinfo, tcbinfo);
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extern int tcp_log_in_vain;
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VNET_DECLARE(int, tcp_mssdflt); /* XXX */
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VNET_DECLARE(int, tcp_minmss);
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VNET_DECLARE(int, tcp_delack_enabled);
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VNET_DECLARE(int, tcp_do_rfc3390);
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VNET_DECLARE(int, tcp_initcwnd_segments);
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VNET_DECLARE(int, tcp_sendspace);
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VNET_DECLARE(int, tcp_recvspace);
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/*
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* Global TCP tunables shared between different stacks.
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* Please keep the list sorted.
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*/
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VNET_DECLARE(int, drop_synfin);
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VNET_DECLARE(int, path_mtu_discovery);
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VNET_DECLARE(int, tcp_do_rfc3465);
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VNET_DECLARE(int, tcp_abc_l_var);
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#define V_tcb VNET(tcb)
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#define V_tcbinfo VNET(tcbinfo)
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#define V_tcp_mssdflt VNET(tcp_mssdflt)
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#define V_tcp_minmss VNET(tcp_minmss)
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#define V_tcp_delack_enabled VNET(tcp_delack_enabled)
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#define V_tcp_do_rfc3390 VNET(tcp_do_rfc3390)
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#define V_tcp_initcwnd_segments VNET(tcp_initcwnd_segments)
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#define V_tcp_sendspace VNET(tcp_sendspace)
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#define V_tcp_recvspace VNET(tcp_recvspace)
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#define V_path_mtu_discovery VNET(path_mtu_discovery)
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#define V_tcp_do_rfc3465 VNET(tcp_do_rfc3465)
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#define V_tcp_abc_l_var VNET(tcp_abc_l_var)
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VNET_DECLARE(int, tcp_do_sack); /* SACK enabled/disabled */
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VNET_DECLARE(int, tcp_sc_rst_sock_fail); /* RST on sock alloc failure */
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#define V_tcp_do_sack VNET(tcp_do_sack)
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#define V_tcp_sc_rst_sock_fail VNET(tcp_sc_rst_sock_fail)
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VNET_DECLARE(int, tcp_do_ecn); /* TCP ECN enabled/disabled */
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VNET_DECLARE(int, tcp_autorcvbuf_inc);
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VNET_DECLARE(int, tcp_autorcvbuf_max);
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VNET_DECLARE(int, tcp_autosndbuf_inc);
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VNET_DECLARE(int, tcp_autosndbuf_max);
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VNET_DECLARE(int, tcp_delack_enabled);
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VNET_DECLARE(int, tcp_do_autorcvbuf);
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VNET_DECLARE(int, tcp_do_autosndbuf);
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VNET_DECLARE(int, tcp_do_ecn);
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VNET_DECLARE(int, tcp_do_rfc1323);
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VNET_DECLARE(int, tcp_do_rfc3042);
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VNET_DECLARE(int, tcp_do_rfc3390);
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VNET_DECLARE(int, tcp_do_rfc3465);
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VNET_DECLARE(int, tcp_do_rfc6675_pipe);
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VNET_DECLARE(int, tcp_do_sack);
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VNET_DECLARE(int, tcp_do_tso);
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VNET_DECLARE(int, tcp_ecn_maxretries);
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#define V_tcp_do_ecn VNET(tcp_do_ecn)
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#define V_tcp_ecn_maxretries VNET(tcp_ecn_maxretries)
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VNET_DECLARE(int, tcp_initcwnd_segments);
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VNET_DECLARE(int, tcp_insecure_rst);
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VNET_DECLARE(int, tcp_insecure_syn);
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VNET_DECLARE(int, tcp_minmss);
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VNET_DECLARE(int, tcp_mssdflt);
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VNET_DECLARE(int, tcp_recvspace);
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VNET_DECLARE(int, tcp_sack_globalholes);
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VNET_DECLARE(int, tcp_sack_globalmaxholes);
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VNET_DECLARE(int, tcp_sack_maxholes);
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VNET_DECLARE(int, tcp_sc_rst_sock_fail);
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VNET_DECLARE(int, tcp_sendspace);
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VNET_DECLARE(struct inpcbhead, tcb);
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VNET_DECLARE(struct inpcbinfo, tcbinfo);
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#define V_drop_synfin VNET(drop_synfin)
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#define V_path_mtu_discovery VNET(path_mtu_discovery)
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#define V_tcb VNET(tcb)
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#define V_tcbinfo VNET(tcbinfo)
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#define V_tcp_abc_l_var VNET(tcp_abc_l_var)
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#define V_tcp_autorcvbuf_inc VNET(tcp_autorcvbuf_inc)
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#define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max)
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#define V_tcp_autosndbuf_inc VNET(tcp_autosndbuf_inc)
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#define V_tcp_autosndbuf_max VNET(tcp_autosndbuf_max)
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#define V_tcp_delack_enabled VNET(tcp_delack_enabled)
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#define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf)
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#define V_tcp_do_autosndbuf VNET(tcp_do_autosndbuf)
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#define V_tcp_do_ecn VNET(tcp_do_ecn)
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#define V_tcp_do_rfc1323 VNET(tcp_do_rfc1323)
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#define V_tcp_do_rfc3042 VNET(tcp_do_rfc3042)
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#define V_tcp_do_rfc3390 VNET(tcp_do_rfc3390)
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#define V_tcp_do_rfc3465 VNET(tcp_do_rfc3465)
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#define V_tcp_do_rfc6675_pipe VNET(tcp_do_rfc6675_pipe)
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#define V_tcp_do_sack VNET(tcp_do_sack)
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#define V_tcp_do_tso VNET(tcp_do_tso)
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#define V_tcp_ecn_maxretries VNET(tcp_ecn_maxretries)
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#define V_tcp_initcwnd_segments VNET(tcp_initcwnd_segments)
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#define V_tcp_insecure_rst VNET(tcp_insecure_rst)
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#define V_tcp_insecure_syn VNET(tcp_insecure_syn)
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#define V_tcp_minmss VNET(tcp_minmss)
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#define V_tcp_mssdflt VNET(tcp_mssdflt)
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#define V_tcp_recvspace VNET(tcp_recvspace)
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#define V_tcp_sack_globalholes VNET(tcp_sack_globalholes)
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#define V_tcp_sack_globalmaxholes VNET(tcp_sack_globalmaxholes)
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#define V_tcp_sack_maxholes VNET(tcp_sack_maxholes)
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#define V_tcp_sc_rst_sock_fail VNET(tcp_sc_rst_sock_fail)
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#define V_tcp_sendspace VNET(tcp_sendspace)
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#ifdef TCP_HHOOK
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VNET_DECLARE(struct hhook_head *, tcp_hhh[HHOOK_TCP_LAST + 1]);
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#define V_tcp_hhh VNET(tcp_hhh)
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#endif
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VNET_DECLARE(int, tcp_do_rfc6675_pipe);
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#define V_tcp_do_rfc6675_pipe VNET(tcp_do_rfc6675_pipe)
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int tcp_addoptions(struct tcpopt *, u_char *);
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int tcp_ccalgounload(struct cc_algo *unload_algo);
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struct tcpcb *
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