Commit 1faac1f7 authored by Mark McLoughlin's avatar Mark McLoughlin Committed by Anthony Liguori

net: move tap_set_offload() code into tap-linux.c

TUNSETOFFLOAD is only available on Linux
Signed-off-by: default avatarMark McLoughlin <markmc@redhat.com>
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent dc69004c
......@@ -40,3 +40,8 @@ int tap_probe_vnet_hdr(int fd)
{
return 0;
}
void tap_fd_set_offload(int fd, int csum, int tso4,
int tso6, int ecn, int ufo)
{
}
......@@ -70,3 +70,8 @@ int tap_probe_vnet_hdr(int fd)
{
return 0;
}
void tap_fd_set_offload(int fd, int csum, int tso4,
int tso6, int ecn, int ufo)
{
}
......@@ -111,3 +111,29 @@ int tap_probe_vnet_hdr(int fd)
return ifr.ifr_flags & IFF_VNET_HDR;
}
void tap_fd_set_offload(int fd, int csum, int tso4,
int tso6, int ecn, int ufo)
{
unsigned int offload = 0;
if (csum) {
offload |= TUN_F_CSUM;
if (tso4)
offload |= TUN_F_TSO4;
if (tso6)
offload |= TUN_F_TSO6;
if ((tso4 || tso6) && ecn)
offload |= TUN_F_TSO_ECN;
if (ufo)
offload |= TUN_F_UFO;
}
if (ioctl(fd, TUNSETOFFLOAD, offload) != 0) {
offload &= ~TUN_F_UFO;
if (ioctl(fd, TUNSETOFFLOAD, offload) != 0) {
fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
strerror(errno));
}
}
}
......@@ -193,3 +193,8 @@ int tap_probe_vnet_hdr(int fd)
{
return 0;
}
void tap_fd_set_offload(int fd, int csum, int tso4,
int tso6, int ecn, int ufo)
{
}
......@@ -243,27 +243,8 @@ void tap_set_offload(VLANClientState *vc, int csum, int tso4,
int tso6, int ecn, int ufo)
{
TAPState *s = vc->opaque;
unsigned int offload = 0;
if (csum) {
offload |= TUN_F_CSUM;
if (tso4)
offload |= TUN_F_TSO4;
if (tso6)
offload |= TUN_F_TSO6;
if ((tso4 || tso6) && ecn)
offload |= TUN_F_TSO_ECN;
if (ufo)
offload |= TUN_F_UFO;
}
if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
offload &= ~TUN_F_UFO;
if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
strerror(errno));
}
}
return tap_fd_set_offload(s->fd, csum, tso4, tso6, ecn, ufo);
}
static void tap_cleanup(VLANClientState *vc)
......
......@@ -45,5 +45,6 @@ void tap_set_offload(VLANClientState *vc, int csum, int tso4, int tso6, int ecn,
int tap_set_sndbuf(int fd, QemuOpts *opts);
int tap_probe_vnet_hdr(int fd);
void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo);
#endif /* QEMU_NET_TAP_H */
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