Differential D20616 Diff 58545 sys/netinet6/ip6_output.c

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sys/netinet6/ip6_output.c

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* @(#)ip_output.c 8.3 (Berkeley) 1/21/94		* @(#)ip_output.c 8.3 (Berkeley) 1/21/94
*/		*/

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

#include "opt_inet.h"		#include "opt_inet.h"
#include "opt_inet6.h"		#include "opt_inet6.h"
#include "opt_ratelimit.h"
#include "opt_ipsec.h"		#include "opt_ipsec.h"
#include "opt_sctp.h"		#include "opt_ratelimit.h"
#include "opt_route.h"		#include "opt_route.h"
#include "opt_rss.h"		#include "opt_rss.h"
		#include "opt_sctp.h"

#include <sys/param.h>		#include <sys/param.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/malloc.h>		#include <sys/malloc.h>
#include <sys/mbuf.h>		#include <sys/mbuf.h>
#include <sys/errno.h>		#include <sys/errno.h>
#include <sys/priv.h>		#include <sys/priv.h>
#include <sys/proc.h>		#include <sys/proc.h>
▲ Show 20 Lines • Show All 875 Lines • ▼ Show 20 Lines	passout:
/*		/*
* If we added extension headers, we will not do TSO and calculate the		* If we added extension headers, we will not do TSO and calculate the
* checksums ourselves for now.		* checksums ourselves for now.
* XXX-BZ Need a framework to know when the NIC can handle it, even		* XXX-BZ Need a framework to know when the NIC can handle it, even
* with ext. hdrs.		* with ext. hdrs.
*/		*/
if (sw_csum & CSUM_DELAY_DATA_IPV6) {		if (sw_csum & CSUM_DELAY_DATA_IPV6) {
sw_csum &= ~CSUM_DELAY_DATA_IPV6;		sw_csum &= ~CSUM_DELAY_DATA_IPV6;
		m = mb_unmapped_to_ext(m);
		if (m == NULL) {
		error = ENOBUFS;
		IP6STAT_INC(ip6s_odropped);
		goto bad;
		}
in6_delayed_cksum(m, plen, sizeof(struct ip6_hdr));		in6_delayed_cksum(m, plen, sizeof(struct ip6_hdr));
		} else if ((ifp->if_capenable & IFCAP_NOMAP) == 0) {
		m = mb_unmapped_to_ext(m);
		if (m == NULL) {
		error = ENOBUFS;
		IP6STAT_INC(ip6s_odropped);
		goto bad;
}		}
		}
#ifdef SCTP		#ifdef SCTP
if (sw_csum & CSUM_SCTP_IPV6) {		if (sw_csum & CSUM_SCTP_IPV6) {
sw_csum &= ~CSUM_SCTP_IPV6;		sw_csum &= ~CSUM_SCTP_IPV6;
		m = mb_unmapped_to_ext(m);
		if (m == NULL) {
		error = ENOBUFS;
		IP6STAT_INC(ip6s_odropped);
		goto bad;
		}
sctp_delayed_cksum(m, sizeof(struct ip6_hdr));		sctp_delayed_cksum(m, sizeof(struct ip6_hdr));
}		}
#endif		#endif
m->m_pkthdr.csum_flags &= ifp->if_hwassist;		m->m_pkthdr.csum_flags &= ifp->if_hwassist;
tlen = m->m_pkthdr.len;		tlen = m->m_pkthdr.len;

if ((opt && (opt->ip6po_flags & IP6PO_DONTFRAG)) \|\| tso)		if ((opt && (opt->ip6po_flags & IP6PO_DONTFRAG)) \|\| tso)
dontfrag = 1;		dontfrag = 1;
▲ Show 20 Lines • Show All 71 Lines • ▼ Show 20 Lines	if (mtu < IPV6_MMTU) {
}		}

/*		/*
* If the interface will not calculate checksums on		* If the interface will not calculate checksums on
* fragmented packets, then do it here.		* fragmented packets, then do it here.
* XXX-BZ handle the hw offloading case. Need flags.		* XXX-BZ handle the hw offloading case. Need flags.
*/		*/
if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) {		if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) {
		m = mb_unmapped_to_ext(m);
		if (m == NULL) {
		in6_ifstat_inc(ifp, ifs6_out_fragfail);
		error = ENOBUFS;
		goto bad;
		}
in6_delayed_cksum(m, plen, hlen);		in6_delayed_cksum(m, plen, hlen);
m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;		m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;
}		}
#ifdef SCTP		#ifdef SCTP
if (m->m_pkthdr.csum_flags & CSUM_SCTP_IPV6) {		if (m->m_pkthdr.csum_flags & CSUM_SCTP_IPV6) {
		m = mb_unmapped_to_ext(m);
		if (m == NULL) {
		in6_ifstat_inc(ifp, ifs6_out_fragfail);
		error = ENOBUFS;
		goto bad;
		}
sctp_delayed_cksum(m, hlen);		sctp_delayed_cksum(m, hlen);
m->m_pkthdr.csum_flags &= ~CSUM_SCTP_IPV6;		m->m_pkthdr.csum_flags &= ~CSUM_SCTP_IPV6;
}		}
#endif		#endif
/*		/*
* Change the next header field of the last header in the		* Change the next header field of the last header in the
* unfragmentable part.		* unfragmentable part.
*/		*/
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