uipc_mbuf.c (3390d47670b18dbdd6f618cc7df61a233cb1e914) uipc_mbuf.c (37621fd5d93015b59e08fc1278cbabfbf393fa7b)
1/*
2 * Copyright (c) 1982, 1986, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 741 unchanged lines hidden (view full) ---

750 m->m_next = n;
751 }
752 m = m->m_next;
753 }
754out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen))
755 m->m_pkthdr.len = totlen;
756}
757
1/*
2 * Copyright (c) 1982, 1986, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 741 unchanged lines hidden (view full) ---

750 m->m_next = n;
751 }
752 m = m->m_next;
753 }
754out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen))
755 m->m_pkthdr.len = totlen;
756}
757
758/*
759 * Apply function f to the data in an mbuf chain starting "off" bytes from
760 * the beginning, continuing for "len" bytes.
761 */
762int
763m_apply(struct mbuf *m, int off, int len,
764 int (*f)(void *, caddr_t, unsigned int), void *arg)
765{
766 unsigned int count;
767 int rval;
768
769 KASSERT(off >= 0, ("m_apply, negative off %d", off));
770 KASSERT(len >= 0, ("m_apply, negative len %d", len));
771
772 while (off > 0) {
773 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain"));
774 if (off < m->m_len)
775 break;
776 off -= m->m_len;
777 m = m->m_next;
778 }
779 while (len > 0) {
780 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain"));
781 count = min(m->m_len - off, len);
782
783 rval = (*f)(arg, mtod(m, caddr_t) + off, count);
784 if (rval)
785 return (rval);
786
787 len -= count;
788 off = 0;
789 m = m->m_next;
790 }
791
792 return (0);
793}
794
795/*
796 * Return a pointer to mbuf/offset of location in mbuf chain.
797 */
798struct mbuf *
799m_getptr(struct mbuf *m, int loc, int *off)
800{
801
802 while (loc >= 0) {
803 /* Normal end of search */
804 if (m->m_len > loc) {
805 *off = loc;
806 return (m);
807 } else {
808 loc -= m->m_len;
809
810 if (m->m_next == NULL) {
811 if (loc == 0) {
812 /* Point at the end of valid data */
813 *off = m->m_len;
814 return (m);
815 } else
816 return (NULL);
817 } else
818 m = m->m_next;
819 }
820 }
821
822 return (NULL);
823}
824
758void
759m_print(const struct mbuf *m)
760{
761 int len;
762 const struct mbuf *m2;
763
764 len = m->m_pkthdr.len;
765 m2 = m;

--- 204 unchanged lines hidden --- 		825void
826m_print(const struct mbuf *m)
827{
828 int len;
829 const struct mbuf *m2;
830
831 len = m->m_pkthdr.len;
832 m2 = m;

--- 204 unchanged lines hidden ---