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Differential D55187 Diff 171467 sys/dev/usb/net/if_ure.c

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sys/dev/usb/net/if_ure.c

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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
#include "opt_inet6.h"
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
#include <sys/bus.h> #include <sys/bus.h>
#include <sys/condvar.h> #include <sys/condvar.h>
#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/lock.h> #include <sys/lock.h>
#include <sys/module.h> #include <sys/module.h>
#include <sys/mutex.h> #include <sys/mutex.h>
#include <sys/sbuf.h> #include <sys/sbuf.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <sys/unistd.h> #include <sys/unistd.h>
#include <net/if.h> #include <net/if.h>
#include <net/if_var.h> #include <net/if_var.h>
#include <net/if_media.h> #include <net/if_media.h>
/* needed for checksum offload */ /* needed for checksum offload */
#include <netinet/in.h> #include <netinet/in.h>
#include <netinet/ip.h> #include <netinet/ip.h>
#ifdef INET6
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#endif
#include <dev/mii/mii.h> #include <dev/mii/mii.h>
#include <dev/mii/miivar.h> #include <dev/mii/miivar.h>
#include <dev/usb/usb.h> #include <dev/usb/usb.h>
#include <dev/usb/usbdi.h> #include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h> #include <dev/usb/usbdi_util.h>
#include "usbdevs.h" #include "usbdevs.h"
#define USB_DEBUG_VAR ure_debug #define USB_DEBUG_VAR ure_debug
#include <dev/usb/usb_debug.h> #include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h> #include <dev/usb/usb_process.h>
#include <dev/usb/net/usb_ethernet.h> #include <dev/usb/net/usb_ethernet.h>
#include <dev/usb/net/if_urereg.h> #include <dev/usb/net/if_urereg.h>
#include "miibus_if.h" #include "miibus_if.h"
#include "opt_inet6.h"
#ifdef USB_DEBUG #ifdef USB_DEBUG
static int ure_debug = 0; static int ure_debug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, ure, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, static SYSCTL_NODE(_hw_usb, OID_AUTO, ure, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"USB ure"); "USB ure");
SYSCTL_INT(_hw_usb_ure, OID_AUTO, debug, CTLFLAG_RWTUN, &ure_debug, 0, SYSCTL_INT(_hw_usb_ure, OID_AUTO, debug, CTLFLAG_RWTUN, &ure_debug, 0,
"Debug level"); "Debug level");
#endif #endif
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* should be dropped. * should be dropped.
*/ */
static int static int
ure_txcsum(struct mbuf *m, int caps, uint32_t *regout) ure_txcsum(struct mbuf *m, int caps, uint32_t *regout)
{ {
struct ip ip; struct ip ip;
struct ether_header *eh; struct ether_header *eh;
int flags; int flags;
uint32_t data;
uint32_t reg; uint32_t reg;
int l3off, l4off; int l3off, l4off;
uint16_t type; uint16_t type;
*regout = 0; *regout = 0;
flags = m->m_pkthdr.csum_flags; flags = m->m_pkthdr.csum_flags;
if (flags == 0) if (flags == 0)
return (0); return (0);
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return (0); return (0);
} }
reg = 0; reg = 0;
if (flags & CSUM_IP) if (flags & CSUM_IP)
reg |= URE_TXPKT_IPV4_CS; reg |= URE_TXPKT_IPV4_CS;
data = m->m_pkthdr.csum_data;
if (flags & (CSUM_IP_TCP | CSUM_IP_UDP)) { if (flags & (CSUM_IP_TCP | CSUM_IP_UDP)) {
m_copydata(m, l3off, sizeof ip, (caddr_t)&ip); m_copydata(m, l3off, sizeof ip, (caddr_t)&ip);
l4off = l3off + (ip.ip_hl << 2) + data; l4off = l3off + (ip.ip_hl << 2);
if (__predict_false(l4off > URE_L4_OFFSET_MAX)) if (__predict_false(l4off > URE_L4_OFFSET_MAX))
return (1); return (1);
reg |= URE_TXPKT_IPV4_CS; reg |= URE_TXPKT_IPV4_CS;
if (flags & CSUM_IP_TCP) if (flags & CSUM_IP_TCP)
reg |= URE_TXPKT_TCP_CS; reg |= URE_TXPKT_TCP_CS;
else if (flags & CSUM_IP_UDP) else if (flags & CSUM_IP_UDP)
reg |= URE_TXPKT_UDP_CS; reg |= URE_TXPKT_UDP_CS;
reg |= l4off << URE_L4_OFFSET_SHIFT; reg |= l4off << URE_L4_OFFSET_SHIFT;
} }
#ifdef INET6 #ifdef INET6
else if (flags & (CSUM_IP6_TCP | CSUM_IP6_UDP)) { else if (flags & (CSUM_IP6_TCP | CSUM_IP6_UDP)) {
l4off = l3off + data; l4off = ip6_lasthdr(m, l3off, IPPROTO_IPV6, NULL);
if (__predict_false(l4off < 0))
return (1);
if (__predict_false(l4off > URE_L4_OFFSET_MAX)) if (__predict_false(l4off > URE_L4_OFFSET_MAX))
return (1); return (1);
reg |= URE_TXPKT_IPV6_CS; reg |= URE_TXPKT_IPV6_CS;
if (flags & CSUM_IP6_TCP) if (flags & CSUM_IP6_TCP)
reg |= URE_TXPKT_TCP_CS; reg |= URE_TXPKT_TCP_CS;
else if (flags & CSUM_IP6_UDP) else if (flags & CSUM_IP6_UDP)
reg |= URE_TXPKT_UDP_CS; reg |= URE_TXPKT_UDP_CS;
reg |= l4off << URE_L4_OFFSET_SHIFT; reg |= l4off << URE_L4_OFFSET_SHIFT;
} }
#endif #endif
*regout = reg; *regout = reg;
return 0; return 0;
} }