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slirp updates 

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Merge remote-tracking branch 'remotes/thibault/tags/samuel-thibault' into staging

slirp updates

# gpg: Signature made Sun 26 Feb 2017 14:40:00 GMT
# gpg:                using RSA key 0xB0A51BF58C9179C5
# gpg: Good signature from "Samuel Thibault <samuel.thibault@aquilenet.fr>"
# gpg:                 aka "Samuel Thibault <sthibault@debian.org>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@gnu.org>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@inria.fr>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@labri.fr>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@ens-lyon.org>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@u-bordeaux.fr>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 900C B024 B679 31D4 0F82  304B D017 8C76 7D06 9EE6
#      Subkey fingerprint: AEBF 7448 FAB9 453A 4552  390E B0A5 1BF5 8C91 79C5

* remotes/thibault/tags/samuel-thibault:
  slirp: tcp_listen(): Don't try to close() an fd we never opened
  slirp: Convert mbufs to use g_malloc() and g_free()
  slirp: Check qemu_socket() return value in udp_listen()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-02-26 16:38:40 +00:00
parent 6b4e463ff3 bd5d2353aa
commit 685783c5b6
3 changed files with 21 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
slirp/mbuf.c
View File

@ -10,7 +10,7 @@
* FreeBSD. They are fixed size, determined by the MTU, * FreeBSD. They are fixed size, determined by the MTU,
* so that one whole packet can fit. Mbuf's cannot be * so that one whole packet can fit. Mbuf's cannot be
* chained together. If there's more data than the mbuf * chained together. If there's more data than the mbuf
* could hold, an external malloced buffer is pointed to * could hold, an external g_malloced buffer is pointed to
* by m_ext (and the data pointers) and M_EXT is set in * by m_ext (and the data pointers) and M_EXT is set in
* the flags * the flags
*/ */
@ -41,26 +41,26 @@ void m_cleanup(Slirp *slirp)
while ((struct quehead *) m != &slirp->m_usedlist) { while ((struct quehead *) m != &slirp->m_usedlist) {
next = m->m_next; next = m->m_next;
if (m->m_flags & M_EXT) { if (m->m_flags & M_EXT) {
free(m->m_ext); g_free(m->m_ext);
} }
free(m); g_free(m);
m = next; m = next;
} }
m = (struct mbuf *) slirp->m_freelist.qh_link; m = (struct mbuf *) slirp->m_freelist.qh_link;
while ((struct quehead *) m != &slirp->m_freelist) { while ((struct quehead *) m != &slirp->m_freelist) {
next = m->m_next; next = m->m_next;
free(m); g_free(m);
m = next; m = next;
} }
} }
/* /*
* Get an mbuf from the free list, if there are none * Get an mbuf from the free list, if there are none
* malloc one * allocate one
* *
* Because fragmentation can occur if we alloc new mbufs and * Because fragmentation can occur if we alloc new mbufs and
* free old mbufs, we mark all mbufs above mbuf_thresh as M_DOFREE, * free old mbufs, we mark all mbufs above mbuf_thresh as M_DOFREE,
* which tells m_free to actually free() it * which tells m_free to actually g_free() it
*/ */
struct mbuf * struct mbuf *
m_get(Slirp *slirp) m_get(Slirp *slirp)
@ -71,8 +71,7 @@ m_get(Slirp *slirp)
DEBUG_CALL("m_get"); DEBUG_CALL("m_get");
if (slirp->m_freelist.qh_link == &slirp->m_freelist) { if (slirp->m_freelist.qh_link == &slirp->m_freelist) {
m = (struct mbuf *)malloc(SLIRP_MSIZE); m = g_malloc(SLIRP_MSIZE);
if (m == NULL) goto end_error;
slirp->mbuf_alloced++; slirp->mbuf_alloced++;
if (slirp->mbuf_alloced > MBUF_THRESH) if (slirp->mbuf_alloced > MBUF_THRESH)
flags = M_DOFREE; flags = M_DOFREE;
@ -94,7 +93,6 @@ m_get(Slirp *slirp)
m->m_prevpkt = NULL; m->m_prevpkt = NULL;
m->resolution_requested = false; m->resolution_requested = false;
m->expiration_date = (uint64_t)-1; m->expiration_date = (uint64_t)-1;
end_error:
DEBUG_ARG("m = %p", m); DEBUG_ARG("m = %p", m);
return m; return m;
} }
@ -112,15 +110,15 @@ m_free(struct mbuf *m)
remque(m); remque(m);
/* If it's M_EXT, free() it */ /* If it's M_EXT, free() it */
if (m->m_flags & M_EXT) if (m->m_flags & M_EXT) {
free(m->m_ext); g_free(m->m_ext);
}
/* /*
* Either free() it or put it on the free list * Either free() it or put it on the free list
*/ */
if (m->m_flags & M_DOFREE) { if (m->m_flags & M_DOFREE) {
m->slirp->mbuf_alloced--; m->slirp->mbuf_alloced--;
free(m); g_free(m);
} else if ((m->m_flags & M_FREELIST) == 0) { } else if ((m->m_flags & M_FREELIST) == 0) {
insque(m,&m->slirp->m_freelist); insque(m,&m->slirp->m_freelist);
m->m_flags = M_FREELIST; /* Clobber other flags */ m->m_flags = M_FREELIST; /* Clobber other flags */
@ -130,7 +128,7 @@ m_free(struct mbuf *m)
/* /*
* Copy data from one mbuf to the end of * Copy data from one mbuf to the end of
* the other.. if result is too big for one mbuf, malloc() * the other.. if result is too big for one mbuf, allocate
* an M_EXT data segment * an M_EXT data segment
*/ */
void void
@ -160,12 +158,12 @@ m_inc(struct mbuf *m, int size)
if (m->m_flags & M_EXT) { if (m->m_flags & M_EXT) {
datasize = m->m_data - m->m_ext; datasize = m->m_data - m->m_ext;
m->m_ext = (char *)realloc(m->m_ext,size); m->m_ext = g_realloc(m->m_ext, size);
m->m_data = m->m_ext + datasize; m->m_data = m->m_ext + datasize;
} else { } else {
char *dat; char *dat;
datasize = m->m_data - m->m_dat; datasize = m->m_data - m->m_dat;
dat = (char *)malloc(size); dat = g_malloc(size);
memcpy(dat, m->m_dat, m->m_size); memcpy(dat, m->m_dat, m->m_size);
m->m_ext = dat; m->m_ext = dat;

4
slirp/socket.c
View File

@ -713,7 +713,9 @@ tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
(listen(s,1) < 0)) { (listen(s,1) < 0)) {
int tmperrno = errno; /* Don't clobber the real reason we failed */ int tmperrno = errno; /* Don't clobber the real reason we failed */
close(s); if (s >= 0) {
closesocket(s);
}
sofree(so); sofree(so);
/* Restore the real errno */ /* Restore the real errno */
#ifdef _WIN32 #ifdef _WIN32

4
slirp/udp.c
View File

@ -335,6 +335,10 @@ udp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
return NULL; return NULL;
} }
so->s = qemu_socket(AF_INET,SOCK_DGRAM,0); so->s = qemu_socket(AF_INET,SOCK_DGRAM,0);
if (so->s < 0) {
sofree(so);
return NULL;
}
so->so_expire = curtime + SO_EXPIRE; so->so_expire = curtime + SO_EXPIRE;
insque(so, &slirp->udb); insque(so, &slirp->udb);