bsd/kern/uipc_mbuf.c

490  * Sample factor for how often to record a trace.  This is overwritable
2895 	/* how many objects will we cut the page into? */
3221 #define	_MGET(m, how, type)	((m) = _M_GET(how, type))
3222 #define	_MGETHDR(m, how, type)	((m) = _M_GETHDR(how, type))
3601 m_dup_pkthdr(struct mbuf *to, struct mbuf *from, int how)
3610 	return (m_tag_copy_chain(to, from, how));
3932 		 * elements that can be allocated so that we know how many
4099 m_getpackets(int num_needed, int num_with_pkthdrs, int how)
4103 	return (m_getpackets_internal(&n, num_with_pkthdrs, how, 0,
4112 m_getpackethdrs(int num_needed, int how)
4121 		m = _M_RETRYHDR(how, MT_DATA);
4345 m_prepend(struct mbuf *m, int len, int how)
4349 	_MGET(mn, how, m->m_type);
4371 m_prepend_2(struct mbuf *m, int len, int how)
4377 		m = m_prepend(m, len, how);
5167 m_copyback_cow(struct mbuf *m0, int off, int len, const void *cp, int how)
5175 	    M_COPYBACK0_COPYBACK | M_COPYBACK0_COW, how);
5191 m_makewritable(struct mbuf **mp, int off, int len, int how)
5207 	    M_COPYBACK0_PRESERVE | M_COPYBACK0_COW, how);
5224     int how)
5262 				MCLGET(m, how);
5281 				n = m_getcl(how, m->m_type, 0);
5283 				n = _M_GET(how, m->m_type);
5317 				n = m_split0(m, off, how, 0);
5335 			n = _M_GET(how, m->m_type);
5444 m_dup(struct mbuf *m, int how)
5463 				if ((n = _M_GETHDR(how, m->m_type)) == NULL)
5466 				m_dup_pkthdr(n, m, how);
5471 			if ((n = _M_GET(how, m->m_type)) == NULL)
5484 			n = _M_GETHDR(how, m->m_type);
5486 			n = _M_GET(how, m->m_type);
5491 				MCLGET(n, how);
5493 				n = m_mbigget(n, how);
5495 				n = m_m16kget(n, how);
5504 			m_dup_pkthdr(n, m, how);
5729 m_defrag_offset(struct mbuf *m0, u_int32_t off, int how)
5742 		m_final = m_getcl(how, MT_DATA, M_PKTHDR);
5744 		m_final = m_gethdr(how, MT_DATA);
5762 	if (m_dup_pkthdr(m_final, m0, how) == 0)
5774 				m_new = m_getcl(how, MT_DATA, 0);
5776 				m_new = m_get(how, MT_DATA);
5798 m_defrag(struct mbuf *m0, int how)
5800 	return (m_defrag_offset(m0, 0, how));