| if_re.c (166178) | if_re.c (166223) |
|---|---|
| 1/*- 2 * Copyright (c) 1997, 1998-2003 3 * Bill Paul <wpaul@windriver.com>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1997, 1998-2003 3 * Bill Paul <wpaul@windriver.com>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> |
| 34__FBSDID("$FreeBSD: head/sys/dev/re/if_re.c 166178 2007-01-23 00:44:12Z yongari $"); | 34__FBSDID("$FreeBSD: head/sys/dev/re/if_re.c 166223 2007-01-25 17:30:30Z wpaul $"); |
| 35 36/* 37 * RealTek 8139C+/8169/8169S/8110S/8168/8111/8101E PCI NIC driver 38 * 39 * Written by Bill Paul <wpaul@windriver.com> 40 * Senior Networking Software Engineer 41 * Wind River Systems 42 */ --- 2023 unchanged lines hidden (view full) --- 2066 * bytes in size, and IP header checksumming is enabled, the 2067 * resulting ethernet frame that appears on the wire will 2068 * have garbled payload. To work around this, if TX checksum 2069 * offload is enabled, we always manually pad short frames out 2070 * to the minimum ethernet frame size. We do this by pretending 2071 * the mbuf chain has too many fragments so the coalescing code 2072 * below can assemble the packet into a single buffer that's 2073 * padded out to the mininum frame size. | 35 36/* 37 * RealTek 8139C+/8169/8169S/8110S/8168/8111/8101E PCI NIC driver 38 * 39 * Written by Bill Paul <wpaul@windriver.com> 40 * Senior Networking Software Engineer 41 * Wind River Systems 42 */ --- 2023 unchanged lines hidden (view full) --- 2066 * bytes in size, and IP header checksumming is enabled, the 2067 * resulting ethernet frame that appears on the wire will 2068 * have garbled payload. To work around this, if TX checksum 2069 * offload is enabled, we always manually pad short frames out 2070 * to the minimum ethernet frame size. We do this by pretending 2071 * the mbuf chain has too many fragments so the coalescing code 2072 * below can assemble the packet into a single buffer that's 2073 * padded out to the mininum frame size. |
| 2074 * 2075 * Note: this appears unnecessary for TCP, and doing it for TCP 2076 * with PCIe adapters seems to result in bad checksums. |
|
| 2074 */ | 2077 */ |
| 2075 if (arg.rl_flags && (*m_head)->m_pkthdr.len < RL_MIN_FRAMELEN) | 2078 2079 if (arg.rl_flags && !(arg.rl_flags & RL_TDESC_CMD_TCPCSUM) && 2080 (*m_head)->m_pkthdr.len < RL_MIN_FRAMELEN) |
| 2076 error = EFBIG; 2077 else 2078 error = bus_dmamap_load_mbuf(sc->rl_ldata.rl_mtag, map, 2079 *m_head, re_dma_map_desc, &arg, BUS_DMA_NOWAIT); 2080 2081 if (error && error != EFBIG) { 2082 device_printf(sc->rl_dev, "can't map mbuf (error %d)\n", error); 2083 return (ENOBUFS); --- 640 unchanged lines hidden --- | 2081 error = EFBIG; 2082 else 2083 error = bus_dmamap_load_mbuf(sc->rl_ldata.rl_mtag, map, 2084 *m_head, re_dma_map_desc, &arg, BUS_DMA_NOWAIT); 2085 2086 if (error && error != EFBIG) { 2087 device_printf(sc->rl_dev, "can't map mbuf (error %d)\n", error); 2088 return (ENOBUFS); --- 640 unchanged lines hidden --- |