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📁 cc
📄 dccp.h(2.48 KB)
📄 icmp6.h(26.97 KB)
📄 icmp_var.h(3.78 KB)
📄 if_ether.c(41.26 KB)
📄 if_ether.h(4.62 KB)
📄 igmp.c(98.93 KB)
📄 igmp.h(5.36 KB)
📄 igmp_var.h(8.69 KB)
📄 in.c(43.68 KB)
📄 in.h(25.81 KB)
📄 in_cksum.c(4.09 KB)
📄 in_debug.c(3.48 KB)
📄 in_fib.c(8.62 KB)
📄 in_fib.h(2.59 KB)
📄 in_fib_algo.c(18.68 KB)
📄 in_gif.c(11.76 KB)
📄 in_jail.c(10.31 KB)
📄 in_kdtrace.c(5.61 KB)
📄 in_kdtrace.h(3.31 KB)
📄 in_mcast.c(79.22 KB)
📄 in_pcb.c(90.89 KB)
📄 in_pcb.h(34.46 KB)
📄 in_pcbgroup.c(17.28 KB)
📄 in_prot.c(2.35 KB)
📄 in_proto.c(9.36 KB)
📄 in_rmx.c(4.99 KB)
📄 in_rss.c(11.27 KB)
📄 in_rss.h(2.42 KB)
📄 in_systm.h(2.57 KB)
📄 in_var.h(15.4 KB)
📄 ip.h(7.37 KB)
📄 ip6.h(8.93 KB)
📄 ip_carp.c(53.25 KB)
📄 ip_carp.h(6.79 KB)
📄 ip_divert.c(21.74 KB)
📄 ip_divert.h(2.32 KB)
📄 ip_dummynet.h(8.94 KB)
📄 ip_ecn.c(5.83 KB)
📄 ip_ecn.h(2.1 KB)
📄 ip_encap.c(10.59 KB)
📄 ip_encap.h(3.13 KB)
📄 ip_fastfwd.c(13.79 KB)
📄 ip_fw.h(34.29 KB)
📄 ip_gre.c(15.28 KB)
📄 ip_icmp.c(31.15 KB)
📄 ip_icmp.h(8.52 KB)
📄 ip_id.c(9.78 KB)
📄 ip_input.c(37.16 KB)
📄 ip_mroute.c(75.86 KB)
📄 ip_mroute.h(13.66 KB)
📄 ip_options.c(19.9 KB)
📄 ip_options.h(2.61 KB)
📄 ip_output.c(40.67 KB)
📄 ip_reass.c(22.42 KB)
📄 ip_var.h(11.48 KB)
📁 khelp
📁 libalias
📁 netdump
📄 pim.h(4.25 KB)
📄 pim_var.h(3.14 KB)
📄 raw_ip.c(28.58 KB)
📄 sctp.h(22.97 KB)
📄 sctp_asconf.c(100.05 KB)
📄 sctp_asconf.h(3.31 KB)
📄 sctp_auth.c(50.44 KB)
📄 sctp_auth.h(8.52 KB)
📄 sctp_bsd_addr.c(13.89 KB)
📄 sctp_bsd_addr.h(2.45 KB)
📄 sctp_cc_functions.c(68.75 KB)
📄 sctp_constants.h(34.12 KB)
📄 sctp_crc32.c(4.5 KB)
📄 sctp_crc32.h(2.07 KB)
📄 sctp_header.h(17.48 KB)
📄 sctp_indata.c(175.36 KB)
📄 sctp_indata.h(4.18 KB)
📄 sctp_input.c(183.57 KB)
📄 sctp_input.h(2.43 KB)
📄 sctp_kdtrace.c(7.51 KB)
📄 sctp_kdtrace.h(3.6 KB)
📄 sctp_lock_bsd.h(15.64 KB)
📄 sctp_module.c(5.16 KB)
📄 sctp_os.h(2.73 KB)
📄 sctp_os_bsd.h(15.04 KB)
📄 sctp_output.c(362.89 KB)
📄 sctp_output.h(6.38 KB)
📄 sctp_pcb.c(198.87 KB)
📄 sctp_pcb.h(19.31 KB)
📄 sctp_peeloff.c(5.74 KB)
📄 sctp_peeloff.h(2.05 KB)
📄 sctp_ss_functions.c(30.72 KB)
📄 sctp_structs.h(38.29 KB)
📄 sctp_syscalls.c(13.94 KB)
📄 sctp_sysctl.c(37.45 KB)
📄 sctp_sysctl.h(22.9 KB)
📄 sctp_timer.c(47.92 KB)
📄 sctp_timer.h(3.07 KB)
📄 sctp_uio.h(38.07 KB)
📄 sctp_usrreq.c(216.08 KB)
📄 sctp_var.h(12.21 KB)
📄 sctputil.c(212.13 KB)
📄 sctputil.h(11.69 KB)
📄 siftr.c(45.2 KB)
📄 tcp.h(18.3 KB)
📄 tcp_debug.c(5.9 KB)
📄 tcp_debug.h(2.65 KB)
📄 tcp_fastopen.c(37.98 KB)
📄 tcp_fastopen.h(3.7 KB)
📄 tcp_fsm.h(4.25 KB)
📄 tcp_hostcache.c(21.43 KB)
📄 tcp_hostcache.h(2.92 KB)
📄 tcp_hpts.c(57.55 KB)
📄 tcp_hpts.h(9.89 KB)
📄 tcp_input.c(115.95 KB)
📄 tcp_log_buf.c(76.37 KB)
📄 tcp_log_buf.h(14.88 KB)
📄 tcp_lro.c(36.38 KB)
📄 tcp_lro.h(4.43 KB)
📄 tcp_offload.c(5.48 KB)
📄 tcp_offload.h(2.09 KB)
📄 tcp_output.c(60.16 KB)
📄 tcp_pcap.c(12.67 KB)
📄 tcp_pcap.h(1.76 KB)
📄 tcp_ratelimit.c(43.8 KB)
📄 tcp_ratelimit.h(5.07 KB)
📄 tcp_reass.c(30.75 KB)
📄 tcp_sack.c(26.74 KB)
📄 tcp_seq.h(3.57 KB)
📁 tcp_stacks
📄 tcp_stats.c(8.47 KB)
📄 tcp_subr.c(92.74 KB)
📄 tcp_syncache.c(73 KB)
📄 tcp_syncache.h(5.16 KB)
📄 tcp_timer.c(31.04 KB)
📄 tcp_timer.h(9.29 KB)
📄 tcp_timewait.c(19.06 KB)
📄 tcp_usrreq.c(71.35 KB)
📄 tcp_var.h(43.48 KB)
📄 tcpip.h(2.29 KB)
📄 toecore.c(13.51 KB)
📄 toecore.h(5.13 KB)
📄 udp.h(2.49 KB)
📄 udp_usrreq.c(44.57 KB)
📄 udp_var.h(6.48 KB)
📄 udplite.h(1.91 KB)

Editing: in_cksum.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1988, 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)in_cksum.c	8.1 (Berkeley) 6/10/93
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/mbuf.h>

/*
 * Checksum routine for Internet Protocol family headers (Portable Version).
 *
 * This routine is very heavily used in the network
 * code and should be modified for each CPU to be as fast as possible.
 */

#define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)
#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; ADDCARRY(sum);}

int
in_cksum(struct mbuf *m, int len)
{
	u_short *w;
	int sum = 0;
	int mlen = 0;
	int byte_swapped = 0;

union {
		char	c[2];
		u_short	s;
	} s_util;
	union {
		u_short s[2];
		long	l;
	} l_util;

for (;m && len; m = m->m_next) {
		if (m->m_len == 0)
			continue;
		w = mtod(m, u_short *);
		if (mlen == -1) {
			/*
			 * The first byte of this mbuf is the continuation
			 * of a word spanning between this mbuf and the
			 * last mbuf.
			 *
			 * s_util.c[0] is already saved when scanning previous
			 * mbuf.
			 */
			s_util.c[1] = *(char *)w;
			sum += s_util.s;
			w = (u_short *)((char *)w + 1);
			mlen = m->m_len - 1;
			len--;
		} else
			mlen = m->m_len;
		if (len < mlen)
			mlen = len;
		len -= mlen;
		/*
		 * Force to even boundary.
		 */
		if ((1 & (uintptr_t) w) && (mlen > 0)) {
			REDUCE;
			sum <<= 8;
			s_util.c[0] = *(u_char *)w;
			w = (u_short *)((char *)w + 1);
			mlen--;
			byte_swapped = 1;
		}
		/*
		 * Unroll the loop to make overhead from
		 * branches &c small.
		 */
		while ((mlen -= 32) >= 0) {
			sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
			sum += w[4]; sum += w[5]; sum += w[6]; sum += w[7];
			sum += w[8]; sum += w[9]; sum += w[10]; sum += w[11];
			sum += w[12]; sum += w[13]; sum += w[14]; sum += w[15];
			w += 16;
		}
		mlen += 32;
		while ((mlen -= 8) >= 0) {
			sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
			w += 4;
		}
		mlen += 8;
		if (mlen == 0 && byte_swapped == 0)
			continue;
		REDUCE;
		while ((mlen -= 2) >= 0) {
			sum += *w++;
		}
		if (byte_swapped) {
			REDUCE;
			sum <<= 8;
			byte_swapped = 0;
			if (mlen == -1) {
				s_util.c[1] = *(char *)w;
				sum += s_util.s;
				mlen = 0;
			} else
				mlen = -1;
		} else if (mlen == -1)
			s_util.c[0] = *(char *)w;
	}
	if (len)
		printf("cksum: out of data\n");
	if (mlen == -1) {
		/* The last mbuf has odd # of bytes. Follow the
		   standard (the odd byte may be shifted left by 8 bits
		   or not as determined by endian-ness of the machine) */
		s_util.c[1] = 0;
		sum += s_util.s;
	}
	REDUCE;
	return (~sum & 0xffff);
}

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Editing: in_cksum.c

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