Lines Matching refs:sb_head
93 mblk_t *sb_head; /* pre-allocated space for the next header */
219 sbp->sb_tail = sbp->sb_mp = sbp->sb_head = NULL;
257 sbp->sb_tail = sbp->sb_mp = sbp->sb_head = NULL;
507 sbp->sb_tail = sbp->sb_mp = sbp->sb_head = NULL;
1002 * sb_head isn't needed in this SB_NO_HEADER mode.
1028 if (sbp->sb_head == NULL) {
1030 sbp->sb_head = allocb(sizeof (hp), BPRI_MED);
1031 if (sbp->sb_head == NULL) {
1043 sbp->sb_mp = sbp->sb_head;
1051 (void) memcpy(sbp->sb_head->b_wptr, (char *)&hp, sizeof (hp));
1052 sbp->sb_head->b_wptr += sizeof (hp);
1054 ASSERT(sbp->sb_head->b_wptr <= sbp->sb_head->b_datap->db_lim);
1059 linkb(sbp->sb_head, mp);
1108 sbp->sb_head = last;
1127 sbp->sb_head = wrapper;
1186 sbp->sb_tail = sbp->sb_mp = sbp->sb_head = NULL;