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Differential D21997 Diff 63292 sys/netinet/sctp_crc32.c

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sys/netinet/sctp_crc32.c

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*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__FBSDID("$FreeBSD$"); __FBSDID("$FreeBSD$");
#include "opt_sctp.h" #include "opt_sctp.h"
#include <sys/gsb_crc32.h> #include <sys/gsb_crc32.h>
#ifdef SCTP #if defined(SCTP) || defined(SCTP_SUPPORT)
#include <netinet/sctp_os.h> #include <netinet/sctp_os.h>
#include <netinet/sctp.h> #include <netinet/sctp.h>
#include <netinet/sctp_crc32.h> #include <netinet/sctp_crc32.h>
#include <netinet/sctp_pcb.h> #include <netinet/sctp_pcb.h>
#else #else
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
#include <sys/mbuf.h> #include <sys/mbuf.h>
▲ Show 20 Lines • Show All 62 Lines • ▼ Show 20 Lines base = calculate_crc32c(base,
(unsigned char *)m->m_data, (unsigned char *)m->m_data,
(unsigned int)m->m_len); (unsigned int)m->m_len);
m = m->m_next; m = m->m_next;
} }
base = sctp_finalize_crc32c(base); base = sctp_finalize_crc32c(base);
return (base); return (base);
} }
#ifdef SCTP #if defined(SCTP) || defined(SCTP_SUPPORT)
/* /*
* Compute and insert the SCTP checksum in network byte order for a given * Compute and insert the SCTP checksum in network byte order for a given
* mbuf chain m which contains an SCTP packet starting at offset. * mbuf chain m which contains an SCTP packet starting at offset.
*/ */
void void
sctp_delayed_cksum(struct mbuf *m, uint32_t offset) sctp_delayed_cksum(struct mbuf *m, uint32_t offset)
{ {
uint32_t checksum; uint32_t checksum;
checksum = sctp_calculate_cksum(m, offset); checksum = sctp_calculate_cksum(m, offset);
SCTP_STAT_DECR(sctps_sendhwcrc); //SCTP_STAT_DECR(sctps_sendhwcrc);
SCTP_STAT_INCR(sctps_sendswcrc); //SCTP_STAT_INCR(sctps_sendswcrc);
offset += offsetof(struct sctphdr, checksum); offset += offsetof(struct sctphdr, checksum);
if (offset + sizeof(uint32_t) > (uint32_t)(m->m_pkthdr.len)) { if (offset + sizeof(uint32_t) > (uint32_t)(m->m_pkthdr.len)) {
#ifdef INVARIANTS #ifdef INVARIANTS
panic("sctp_delayed_cksum(): m->m_pkthdr.len: %d, offset: %u.", panic("sctp_delayed_cksum(): m->m_pkthdr.len: %d, offset: %u.",
m->m_pkthdr.len, offset); m->m_pkthdr.len, offset);
#else #else
SCTP_PRINTF("sctp_delayed_cksum(): m->m_pkthdr.len: %d, offset: %u.\n", SCTP_PRINTF("sctp_delayed_cksum(): m->m_pkthdr.len: %d, offset: %u.\n",
m->m_pkthdr.len, offset); m->m_pkthdr.len, offset);
#endif #endif
return; return;
} }
m_copyback(m, (int)offset, (int)sizeof(uint32_t), (caddr_t)&checksum); m_copyback(m, (int)offset, (int)sizeof(uint32_t), (caddr_t)&checksum);
} }
#endif #endif