37#include <sys/sysctl.h>
38#include <sys/endian.h>
40#include <sys/malloc.h>
42#include <sys/module.h>
45#include <sys/mchain.h>
51#define MBERROR(format, ...) printf("%s(%d): "format, __func__ , \
52 __LINE__ , ## __VA_ARGS__)
54#define MBPANIC(format, ...) printf("%s(%d): "format, __func__ , \
55 __LINE__ , ## __VA_ARGS__)
65 m = m_gethdr(M_WAITOK, MT_DATA);
74 bzero(mbp,
sizeof(*mbp));
75 mbp->mb_top = mbp->mb_cur = m;
76 mbp->mb_mleft = M_TRAILINGSPACE(m);
101 return (mbp->mb_top->m_pkthdr.len =
m_fixhdr(mbp->mb_top));
117 panic(
"mb_reserve: size = %d\n", size);
119 if (mbp->mb_mleft < size) {
120 mn = m_get(M_WAITOK, MT_DATA);
121 mbp->mb_cur = m->m_next = mn;
124 mbp->mb_mleft = M_TRAILINGSPACE(m);
126 mbp->mb_mleft -= size;
127 mbp->mb_count += size;
128 bpos = mtod(m, caddr_t) + m->m_len;
139 dst = mtod(mbp->mb_cur, caddr_t) + mbp->mb_cur->m_len;
142 if ((
unsigned long)dst & 1)
143 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
151 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
158 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
165 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
172 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
179 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
186 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
193 return (
mb_put_mem(mbp, (caddr_t)&x,
sizeof(x), MB_MSYSTEM));
202 int cplen, error, mleft,
count;
203 size_t srclen, dstlen;
206 mleft = mbp->mb_mleft;
210 if (m->m_next == NULL)
211 m = m_getm(m, size, M_WAITOK, MT_DATA);
214 mleft = M_TRAILINGSPACE(m);
217 cplen = mleft > size ? size : mleft;
218 srclen = dstlen = cplen;
219 dst = mtod(m, caddr_t) + m->m_len;
224 error = mbp->mb_copy(mbp, source, dst, &srclen, &dstlen);
233 bcopy(source, dst, cplen);
236 error = copyin(source, dst, cplen);
248 mbp->mb_count += dstlen;
251 mbp->mb_mleft = mleft;
258 mbp->mb_cur->m_next = m;
260 mbp->mb_count += m->m_len;
261 if (m->m_next == NULL)
265 mbp->mb_mleft = M_TRAILINGSPACE(m);
279 mtype = (uiop->uio_segflg == UIO_SYSSPACE) ? MB_MSYSTEM : MB_MUSER;
281 while (size > 0 && uiop->uio_resid) {
282 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL)
284 left = uiop->uio_iov->iov_len;
292 error =
mb_put_mem(mbp, uiop->uio_iov->iov_base, left, mtype);
295 uiop->uio_offset += left;
296 uiop->uio_resid -= left;
297 uiop->uio_iov->iov_base =
298 (
char *)uiop->uio_iov->iov_base + left;
299 uiop->uio_iov->iov_len -= left;
313 m = m_gethdr(M_WAITOK, MT_DATA);
322 bzero(mdp,
sizeof(*mdp));
323 mdp->md_top = mdp->md_cur = m;
324 mdp->md_pos = mtod(m, u_char*);
345 if (mdp->md_top == NULL) {
353 top->m_nextpkt = NULL;
365 if (mdp->md_top == NULL)
367 m = mdp->md_top->m_nextpkt;
384 return (
md_get_mem(mdp, (caddr_t)x, 2, MB_MINLINE));
412 return (
md_get_mem(mdp, (caddr_t)x, 4, MB_MINLINE));
442 return (
md_get_mem(mdp, (caddr_t)x, 8, MB_MINLINE));
472 struct mbuf *m = mdp->md_cur;
483 count = mtod(m, u_char*) + m->m_len - s;
485 mdp->md_cur = m = m->m_next;
487 s = mdp->md_pos = mtod(m, caddr_t);
493 mdp->md_pos +=
count;
498 error = copyout(s, target,
count);
503 bcopy(s, target,
count);
518 struct mbuf *m = mdp->md_cur, *rm;
520 rm =
m_copym(m, mdp->md_pos - mtod(m, u_char*), size, M_WAITOK);
533 mtype = (uiop->uio_segflg == UIO_SYSSPACE) ? MB_MSYSTEM : MB_MUSER;
534 while (size > 0 && uiop->uio_resid) {
535 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL)
537 left = uiop->uio_iov->iov_len;
543 uiocp = uiop->uio_iov->iov_base;
549 uiop->uio_offset += left;
550 uiop->uio_resid -= left;
551 uiop->uio_iov->iov_base =
552 (
char *)uiop->uio_iov->iov_base + left;
553 uiop->uio_iov->iov_len -= left;
device_property_type_t type
void m_freem(struct mbuf *mb)
void panic(const char *fmt,...)
struct intr_irqsrc ** src
int mb_put_uint32le(struct mbchain *mbp, uint32_t x)
int md_get_int64(struct mdchain *mdp, int64_t *x)
int md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type)
int md_get_uio(struct mdchain *mdp, struct uio *uiop, int size)
void md_done(struct mdchain *mdp)
FEATURE(libmchain, "mchain library")
MODULE_VERSION(libmchain, 1)
int md_get_uint32be(struct mdchain *mdp, uint32_t *x)
int md_get_uint8(struct mdchain *mdp, uint8_t *x)
int md_get_uint16be(struct mdchain *mdp, uint16_t *x)
int md_get_int64be(struct mdchain *mdp, int64_t *x)
int mb_put_uint32be(struct mbchain *mbp, uint32_t x)
int mb_put_int64le(struct mbchain *mbp, int64_t x)
int md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **ret)
int mb_put_mbuf(struct mbchain *mbp, struct mbuf *m)
int md_next_record(struct mdchain *mdp)
int mb_put_uint16be(struct mbchain *mbp, uint16_t x)
int md_get_uint32le(struct mdchain *mdp, uint32_t *x)
void md_append_record(struct mdchain *mdp, struct mbuf *top)
int md_get_uint16(struct mdchain *mdp, uint16_t *x)
int mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type)
void md_initm(struct mdchain *mdp, struct mbuf *m)
caddr_t mb_reserve(struct mbchain *mbp, int size)
int mb_init(struct mbchain *mbp)
int mb_put_uint16le(struct mbchain *mbp, uint16_t x)
int mb_fixhdr(struct mbchain *mbp)
struct mbuf * mb_detach(struct mbchain *mbp)
int mb_put_int64be(struct mbchain *mbp, int64_t x)
int mb_put_uint8(struct mbchain *mbp, uint8_t x)
int md_get_uint16le(struct mdchain *mdp, uint16_t *x)
#define MBERROR(format,...)
void mb_done(struct mbchain *mbp)
void mb_initm(struct mbchain *mbp, struct mbuf *m)
int mb_put_padbyte(struct mbchain *mbp)
int mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size)
int md_get_int64le(struct mdchain *mdp, int64_t *x)
int md_get_uint32(struct mdchain *mdp, uint32_t *x)
int md_init(struct mdchain *mdp)
struct mbuf * m_copym(struct mbuf *m, int off0, int len, int wait)
u_int m_fixhdr(struct mbuf *m0)