src/sys/netinet/udp_usrreq.c - diff

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version 1.134.2.3, 2005/05/01 11:03:37

version 1.134.2.4, 2005/05/06 08:40:21

Line 146 int udpcksum = 1;

#else

int udpcksum = 0; /* XXX */

#endif

int udp_do_loopback_cksum = 0;

struct inpcbtable udbtable;

struct udpstat udpstat;

Line 1080 udp_output(struct mbuf *m, ...)

Line 1079 udp_output(struct mbuf *m, ...)

* XXX Cache pseudo-header checksum part for

* XXX "connected" UDP sockets.

* Maybe skip checksums on loopback interfaces.

ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,

ui->ui_dst.s_addr, htons((u_int16_t)len +

sizeof(struct udphdr) + IPPROTO_UDP));

if (__predict_true(ro->ro_rt == NULL ||

m->m_pkthdr.csum_flags = M_CSUM_UDPv4;

!(ro->ro_rt->rt_ifp->if_flags &

IFF_LOOPBACK) ||

udp_do_loopback_cksum))

m->m_pkthdr.csum_flags = M_CSUM_UDPv4;

else

m->m_pkthdr.csum_flags = 0;

m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);

} else

ui->ui_sum = 0;