Date: Tue, 6 May 2014 00:00:07 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r265408 - in head: sys/netinet usr.bin/netstat Message-ID: <201405060000.s46007s6044383@svn.freebsd.org>
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Author: glebius Date: Tue May 6 00:00:07 2014 New Revision: 265408 URL: http://svnweb.freebsd.org/changeset/base/265408 Log: - Remove net.inet.tcp.reass.overflows sysctl. It counts exactly same events that tcpstat's tcps_rcvmemdrop counter counts. - Rename tcps_rcvmemdrop to tcps_rcvreassfull and improve its description in netstat(1) output. Sponsored by: Netflix Sponsored by: Nginx, Inc. Modified: head/sys/netinet/tcp_reass.c head/sys/netinet/tcp_var.h head/usr.bin/netstat/inet.c Modified: head/sys/netinet/tcp_reass.c ============================================================================== --- head/sys/netinet/tcp_reass.c Mon May 5 23:54:13 2014 (r265407) +++ head/sys/netinet/tcp_reass.c Tue May 6 00:00:07 2014 (r265408) @@ -72,16 +72,6 @@ __FBSDID("$FreeBSD$"); #include <netinet6/tcp6_var.h> #include <netinet/tcpip.h> -static SYSCTL_NODE(_net_inet_tcp, OID_AUTO, reass, CTLFLAG_RW, 0, - "TCP Segment Reassembly Queue"); - -static VNET_DEFINE(int, tcp_reass_overflows) = 0; -#define V_tcp_reass_overflows VNET(tcp_reass_overflows) -SYSCTL_VNET_INT(_net_inet_tcp_reass, OID_AUTO, overflows, - CTLTYPE_INT | CTLFLAG_RD, - &VNET_NAME(tcp_reass_overflows), 0, - "Global number of TCP Segment Reassembly Queue Overflows"); - void tcp_reass_flush(struct tcpcb *tp) { @@ -142,8 +132,7 @@ tcp_reass(struct tcpcb *tp, struct tcphd tp->t_segqlen + m->m_pkthdr.len >= sbspace(&so->so_rcv)) { char *s; - V_tcp_reass_overflows++; - TCPSTAT_INC(tcps_rcvmemdrop); + TCPSTAT_INC(tcps_rcvreassfull); *tlenp = 0; if ((s = tcp_log_addrs(&tp->t_inpcb->inp_inc, th, NULL, NULL))) { Modified: head/sys/netinet/tcp_var.h ============================================================================== --- head/sys/netinet/tcp_var.h Mon May 5 23:54:13 2014 (r265407) +++ head/sys/netinet/tcp_var.h Tue May 6 00:00:07 2014 (r265408) @@ -426,7 +426,7 @@ struct tcpstat { uint64_t tcps_rcvbyte; /* bytes received in sequence */ uint64_t tcps_rcvbadsum; /* packets received with ccksum errs */ uint64_t tcps_rcvbadoff; /* packets received with bad offset */ - uint64_t tcps_rcvmemdrop; /* packets dropped for lack of memory */ + uint64_t tcps_rcvreassfull; /* packets dropped for no reass space */ uint64_t tcps_rcvshort; /* packets received too short */ uint64_t tcps_rcvduppack; /* duplicate-only packets received */ uint64_t tcps_rcvdupbyte; /* duplicate-only bytes received */ Modified: head/usr.bin/netstat/inet.c ============================================================================== --- head/usr.bin/netstat/inet.c Mon May 5 23:54:13 2014 (r265407) +++ head/usr.bin/netstat/inet.c Tue May 6 00:00:07 2014 (r265408) @@ -660,7 +660,8 @@ tcp_stats(u_long off, const char *name, p(tcps_rcvbadsum, "\t\t%ju discarded for bad checksum%s\n"); p(tcps_rcvbadoff, "\t\t%ju discarded for bad header offset field%s\n"); p1a(tcps_rcvshort, "\t\t%ju discarded because packet too short\n"); - p1a(tcps_rcvmemdrop, "\t\t%ju discarded due to memory problems\n"); + p1a(tcps_rcvreassfull, + "\t\t%ju discarded due to no space in reassembly queue\n"); p(tcps_connattempt, "\t%ju connection request%s\n"); p(tcps_accepts, "\t%ju connection accept%s\n"); p(tcps_badsyn, "\t%ju bad connection attempt%s\n");
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