Date: Fri, 18 May 2007 22:00:37 +0200 From: Andre Oppermann <andre@freebsd.org> To: Andre Oppermann <andre@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/netinet tcp.h tcp_input.c tcp_subr.c tcp_var.h Message-ID: <464E05E5.5070704@freebsd.org> In-Reply-To: <200705181958.l4IJwbOb044945@repoman.freebsd.org> References: <200705181958.l4IJwbOb044945@repoman.freebsd.org>
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Andre Oppermann wrote: > andre 2007-05-18 19:58:37 UTC > > FreeBSD src repository > > Modified files: > sys/netinet tcp.h tcp_input.c tcp_subr.c tcp_var.h > Log: > Add tcp_log_addrs() function to generate and standardized TCP log line > for use thoughout the tcp subsystem. > > It is IPv4 and IPv6 aware creates a line in the following format: > > "TCP: [1.2.3.4]:50332 to [1.2.3.4]:80 tcpflags <RST>" > > A "\n" is not included at the end. The caller is supposed to add > further information after the standard tcp log header. > > The function returns a NUL terminated string which the caller has > to free(s, M_TCPLOG) after use. All memory allocation is done > with M_NOWAIT and the return value may be NULL in memory shortage > situations. > > Either struct in_conninfo || (struct tcphdr && (struct ip || struct > ip6_hdr) have to be supplied. > > Due to ip[6].h header inclusion limitations and ordering issues the > struct ip and struct ip6_hdr parameters have to be casted and passed > as void * pointers. > > tcp_log_addrs(struct in_conninfo *inc, struct tcphdr *th, void *ip4hdr, > void *ip6hdr) > > Usage example: > > struct ip *ip; > char *tcplog; > > if (tcplog = tcp_log_addrs(NULL, th, (void *)ip, NULL)) { > log(LOG_DEBUG, "%s; %s: Connection attempt to closed port\n", > tcplog, __func__); > free(s, M_TCPLOG); Oops, free(tcplog, M_TCPLOG) obviously. -- Andre
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