| 1 | ***************
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| 2 | *** 1,4 ****
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| 3 | - /* $Id: VBoxNetFlt-linux.c $ */
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| 4 | /** @file
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| 5 | * VBoxNetFlt - Network Filter Driver (Host), Linux Specific Code.
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| 6 | */
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| 7 | --- 1,4 ----
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| 8 | + /* $Id: VBoxNetFlt-linux.c 48355 2009-06-08 20:21:59Z aleksey $ */
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| 9 | /** @file
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| 10 | * VBoxNetFlt - Network Filter Driver (Host), Linux Specific Code.
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| 11 | */
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| 12 | ***************
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| 13 | *** 27,32 ****
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| 14 | #include <linux/netdevice.h>
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| 15 | #include <linux/etherdevice.h>
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| 16 | #include <linux/rtnetlink.h>
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| 17 |
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| 18 | #define LOG_GROUP LOG_GROUP_NET_FLT_DRV
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| 19 | #include <VBox/log.h>
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| 20 | --- 27,33 ----
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| 21 | #include <linux/netdevice.h>
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| 22 | #include <linux/etherdevice.h>
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| 23 | #include <linux/rtnetlink.h>
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| 24 | + #include <linux/ip.h>
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| 25 |
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| 26 | #define LOG_GROUP LOG_GROUP_NET_FLT_DRV
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| 27 | #include <VBox/log.h>
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| 28 | ***************
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| 29 | *** 774,785 ****
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| 30 | else
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| 31 | {
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| 32 | if (pBuf->ip_summed == CHECKSUM_PARTIAL && pBuf->pkt_type == PACKET_OUTGOING)
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| 33 | if (VBOX_SKB_CHECKSUM_HELP(pBuf))
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| 34 | {
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| 35 | LogRel(("VBoxNetFlt: Failed to compute checksum, dropping the packet.\n"));
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| 36 | dev_kfree_skb(pBuf);
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| 37 | return;
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| 38 | }
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| 39 | vboxNetFltLinuxForwardSegment(pThis, pBuf, fSrc);
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| 40 | }
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| 41 | /*
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| 42 | --- 775,803 ----
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| 43 | else
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| 44 | {
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| 45 | if (pBuf->ip_summed == CHECKSUM_PARTIAL && pBuf->pkt_type == PACKET_OUTGOING)
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| 46 | + {
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| 47 | + #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
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| 48 | + /*
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| 49 | + * Try to work around the problem with CentOS 4.7 and 5.2 (2.6.9
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| 50 | + * and 2.6.18 kernels), they pass wrong 'h' pointer down. We take IP
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| 51 | + * header length from the header itself and reconstruct 'h' pointer
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| 52 | + * to TCP (or whatever) header.
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| 53 | + */
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| 54 | + unsigned char *tmp = pBuf->h.raw;
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| 55 | + if (pBuf->h.raw == pBuf->nh.raw && pBuf->protocol == htons(ETH_P_IP))
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| 56 | + pBuf->h.raw = pBuf->nh.raw + pBuf->nh.iph->ihl * 4;
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| 57 | + #endif /* LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18) */
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| 58 | if (VBOX_SKB_CHECKSUM_HELP(pBuf))
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| 59 | {
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| 60 | LogRel(("VBoxNetFlt: Failed to compute checksum, dropping the packet.\n"));
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| 61 | dev_kfree_skb(pBuf);
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| 62 | return;
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| 63 | }
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| 64 | + #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
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| 65 | + /* Restore the original (wrong) pointer. */
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| 66 | + pBuf->h.raw = tmp;
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| 67 | + #endif /* LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18) */
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| 68 | + }
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| 69 | vboxNetFltLinuxForwardSegment(pThis, pBuf, fSrc);
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| 70 | }
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| 71 | /*
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