search for: ip_rcv

...nswer: - - - - - - - - - - - - - - - - - - - - - - I find a posting (from many years ago) [0], which suggests that this happens in fib_validate_source() (in fib_frontend.c) which is only called by route.c. I tried following the diagram by Mathieu Lafon to see if fib_validate_source() is called in ip_rcv() (in ip_input.c), but I don''t read C very well, so I could well be missing where the rp_filter validation is occurring. If I understand the path correctly, the functions are traversed in this order (from most deeply nested first): fib_validate_source() ip_route_input_slow() ip_rou...

...e [<c02846df>] dev_queue_xmit+0x53/0x2e4 [<c0286e20>] neigh_connected_output+0x80/0xa0 [<c02a213a>] ip_output+0x1b5/0x24b [<c02a0b56>] ip_finish_output+0x0/0x192 [<c029dfef>] ip_forward+0x1c8/0x2b9 [<c029ddf0>] ip_forward_finish+0x0/0x37 [<c029c962>] ip_rcv+0x2a5/0x538 [<c029c100>] ip_rcv_finish+0x0/0x2aa [<c027f3bc>] __netdev_alloc_skb+0x12/0x2a [<c029c6bd>] ip_rcv+0x0/0x538 [<c0282a1e>] netif_receive_skb+0x218/0x318 [<c0270008>] bitmap_get_counter+0x41/0x1e6 [<f8a6146d>] e1000_clean_rx_irq+0x12c/0x4ef [e1000...

...164375>] [<c01641e0>] [<c0105726>] [<c0164200>] Code: 8b 56 04 85 d2 79 23 68 c7 fd 22 c0 68 bc 06 00 00 68 19 fb >>EIP; c0165e69 <__journal_remove_journal_head+9/e0> <===== Trace; c01614c3 <journal_commit_transaction+343/119a> Trace; c01e93d3 <ip_rcv+313/3a0> Trace; c0164375 <kjournald+175/2b0> Trace; c01641e0 <commit_timeout+0/10> Trace; c0105726 <kernel_thread+26/30> Trace; c0164200 <kjournald+0/2b0> Code; c0165e69 <__journal_remove_journal_head+9/e0> 00000000 <_EIP>: Code; c0165e69 <__journal_remov...

..._rcv_state_process at ffffffff814b1128 #10 [ffff880028283b18] tcp_v4_do_rcv at ffffffff814b94f0 #11 [ffff880028283bb8] tcp_v4_rcv at ffffffff814baf9a #12 [ffff880028283c48] ip_local_deliver_finish at ffffffff8149648d #13 [ffff880028283c78] ip_local_deliver at ffffffff81496718 #14 [ffff880028283ca8] ip_rcv_finish at ffffffff81495bbd #15 [ffff880028283ce8] ip_rcv at ffffffff81496155 #16 [ffff880028283d28] __netif_receive_skb at ffffffff8145db5b #17 [ffff880028283d88] netif_receive_skb at ffffffff814621b8 #18 [ffff880028283dc8] virtnet_poll at ffffffffa0130565 [virtio_net] #19 [ffff880028283e68] net_rx...

...14 [ffff880010ba3b48] nf_iterate at ffffffff812fd45c #15 [ffff880010ba3b98] nf_hook_slow at ffffffff812fd514 #16 [ffff880010ba3c08] ip_output at ffffffff8130b6f3 #17 [ffff880010ba3c38] ip_forward_finish at ffffffff81306cde #18 [ffff880010ba3c58] ip_forward at ffffffff81306ede #19 [ffff880010ba3c98] ip_rcv_finish at ffffffff81305125 #20 [ffff880010ba3cd8] ip_rcv at ffffffff813056ad #21 [ffff880010ba3d18] netif_receive_skb at ffffffff812d787a #22 [ffff880010ba3d78] napi_skb_finish at ffffffff812d7c68 #23 [ffff880010ba3d98] napi_gro_receive at ffffffff812d8179 #24 [ffff880010ba3db8] ixgbe_poll at fffff...

...nd frontend drivers and created the split TEMPIF drivers. I have also changed the python scripts to create devices. When used between dom0 and domU this works. By changing the protocol type of device i was be able to send and recieve socket buffers, by just adding network protocol hooks, like ip_rcv(). But i am unable to do so between 2 domUs. Is there anything special that i have to do. I am using XEN 3.0 testing. I have enabled the backend on one domU by adding the following line in the boot config file as >> tempif = yes and added the following info in boot config file of domU...

...<ffffffff8024218b>{ip_local_deliver_finish+0} <ffffffff8023cdfd> {nf_hook_slow+90} <ffffffff8024218b>{ip_local_deliver_finish+0} <ffffffff802423ce> {ip_local_deliver+103} <ffffffff880339be>{:ip_conntrack:tcp_pkt_to_tuple+0} <ffffffff80242a6e>{ip_rcv+1206} <ffffffff8020e8f8>{netif_poll+1661} <ffffffff80229f4f>{net_rx_action+183} <ffffffff8012b68d> {__do_softirq+123} <ffffffff8010b992>{call_softirq+30} <ffffffff8010d02b>{do_softirq+75} <ffffffff8010d28e>{do_IRQ+67} <ffffffff8020472d>...

...622000 00000000 00000000 00000000 00000019 dfc5dba0 d7cdefd0 0005b9ce d29b281e db6bf760 de956000 c01db16b d4955f80 d4955f20 d4955ec0 d4955e60 d4955e00 Call Trace: [<e081b42f>] .rodata.str1.1 [jdb] 0x4ef [<e0814533>] journal_commit_transaction [jbd] 0x293 [<c01db16b>] ip_rcv [kernel] 0x31b [<e0817106>] kjournald [jbd] 0x116 [<e0816fd0>] commit_timeout [jbd] 0x0 [<c0107136>] kernel_thread [kernel] 0x26 [<e0816ff0>] kjournald [jbd] 0x0 Code: 0f 0b 58 5a 39 1e 74 34 68 39 b6 81 e0 68 ed 06 00 00 68 2f

...e; 8809daf2 <[nfsd]find_fh_dentry+42/320> Trace; 8809df08 <[nfsd]fh_verify+138/304> Trace; 8809ed1a <[nfsd]nfsd_open+1e/164> Trace; 8809f1d3 <[nfsd]nfsd_write+3b/418> Trace; 801903de <udp_rcv+1f2/220> Trace; 8017f1ca <ip_local_deliver+242/298> Trace; 8017f4d9 <ip_rcv+2b9/2f0> Trace; 801947f0 <inet_sendmsg+0/90> Trace; 8017020d <net_bh+175/1d0> Trace; 880c32c8 <[nfsd]nfscache+18768/1e01f> Trace; 880aa540 <[nfsd]nfsd_procedures3+e0/2c0> Trace; 880a41b3 <[nfsd]nfsd3_proc_write+bb/d4> Trace; 880aa540 <[nfsd]nfsd_procedures3+e0/2c...

...> Trace; c01cfc5c <ip_forward_finish+0/54> Trace; c01cfc5c <ip_forward_finish+0/54> Trace; c01c84dd <nf_hook_slow+b5/144> Trace; c01cfc5c <ip_forward_finish+0/54> Trace; c01cfc06 <ip_forward+196/1ec> Trace; c01cfc5c <ip_forward_finish+0/54> Trace; c01ceedc <ip_rcv_finish+0/1a4> Trace; c01cf050 <ip_rcv_finish+174/1a4> Trace; c01ceedc <ip_rcv_finish+0/1a4> Trace; c01c8516 <nf_hook_slow+ee/144> Trace; c01ced77 <ip_rcv+327/35c> Trace; c01ceedc <ip_rcv_finish+0/1a4> Trace; c01c3093 <netif_receive_skb+107/134> Trace; c01c312d...

...e>] skb_checksum+0x52/0x282 May 4 12:46:03 ms7b kernel: [<c05f8522>] tcp_v4_do_rcv+0x25/0x2b6 May 4 12:46:03 ms7b kernel: [<c05faa9a>] tcp_v4_rcv+0x8e9/0x93b May 4 12:46:03 ms7b kernel: [<c05e21e1>] ip_local_deliver+0x15b/0x206 May 4 12:46:03 ms7b kernel: [<c05e204c>] ip_rcv+0x47f/0x4b9 May 4 12:46:03 ms7b kernel: [<c05c6aea>] netif_receive_skb+0x3dd/0x401 May 4 12:46:03 ms7b kernel: [<f89828c2>] rtl8169_rx_interrupt+0x4be/0x4cd [r8169] May 4 12:46:03 ms7b kernel: [<f898516d>] rtl8169_poll_compat+0x48/0x19f [r8169] May 4 12:46:03 ms7b kernel: [&lt...

...l: [<ffffffff81492193>] ? tcp_v4_do_rcv+0x2e3/0x430 Oct 18 03:10:52 backup kernel: [<ffffffff814716dd>] ? ip_local_deliver_finish+0xdd/0x2d0 Oct 18 03:10:52 backup kernel: [<ffffffff81471968>] ? ip_local_deliver+0x98/0xa0 Oct 18 03:10:52 backup kernel: [<ffffffff81470e2d>] ? ip_rcv_finish+0x12d/0x440 Oct 18 03:10:52 backup kernel: [<ffffffff814713b5>] ? ip_rcv+0x275/0x350 Oct 18 03:10:52 backup kernel: [<ffffffff8104efd4>] ? scale_rt_power+0x24/0x80 Oct 18 03:10:52 backup kernel: [<ffffffff8143aafb>] ? __netif_receive_skb+0x49b/0x6f0 Oct 18 03:10:52 backup k...

...+0x34f/0x640 [ip_vs] [ 782.525593] ? ip_vs_conn_out_get+0xe0/0xe0 [ip_vs] [ 782.525596] ip_vs_remote_request4+0x47/0xa0 [ip_vs] [ 782.525598] ? ip_vs_in.part.29.constprop.36+0x640/0x640 [ip_vs] [ 782.525600] nf_hook_slow+0x43/0xc0 [ 782.525602] ip_local_deliver+0xac/0xc0 [ 782.525604] ? ip_rcv_finish+0x400/0x400 [ 782.525606] ip_rcv+0x26c/0x380 [ 782.525610] __netif_receive_skb_core+0x3a0/0xb10 [ 782.525629] ? inet_gro_receive+0x23c/0x2b0 [ 782.525631] ? netif_receive_skb_internal+0x24/0xb0 [ 782.525633] netif_receive_skb_internal+0x24/0xb0 [ 782.525635] napi_gro_receive+0xb8...

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=22 laforge@netfilter.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bowles@ambisys.com Component|unknown |ip_tables (kernel) OS/Version|other

...186a>] ? __alloc_skb+0x7a/0x180 Mar 16 07:01:21 *****store01 kernel: [<ffffffff8115f4bf>] ? kmem_cache_alloc_node_notrace+0x6f/0x130 Mar 16 07:01:21 *****store01 kernel: [<ffffffff8115f6fb>] ? __kmalloc_node+0x7b/0x100 Mar 16 07:01:21 *****store01 kernel: [<ffffffff81461e65>] ? ip_rcv+0x275/0x350 Mar 16 07:01:21 *****store01 kernel: [<ffffffff8142186a>] ? __alloc_skb+0x7a/0x180 Mar 16 07:01:21 *****store01 kernel: [<ffffffff814219e6>] ? __netdev_alloc_skb+0x36/0x60 Mar 16 07:01:21 *****store01 kernel: [<ffffffffa0188104>] ? ixgbe_alloc_rx_buffers+0x2c4/0x380 [i...

...el: [<ffffffff81432f6c>] ? sk_reset_timer+0x1c/0x30 Jun 13 09:41:18 myhost kernel: [<ffffffff81478add>] ? ip_local_deliver_finish+0xdd/0x2d0 Jun 13 09:41:18 myhost kernel: [<ffffffff81478d68>] ? ip_local_deliver+0x98/0xa0 Jun 13 09:41:18 myhost kernel: [<ffffffff8147822d>] ? ip_rcv_finish+0x12d/0x440 Jun 13 09:41:18 myhost kernel: [<ffffffff814787b5>] ? ip_rcv+0x275/0x350 Jun 13 09:41:18 myhost kernel: [<ffffffff81441deb>] ? __netif_receive_skb+0x49b/0x6f0 Jun 13 09:41:18 myhost kernel: [<ffffffff8149813a>] ? tcp4_gro_receive+0x5a/0xd0 Jun 13 09:41:18 myhost...

Looks like the GSO is involved? I got this while running Dom0 only (no guests), with a BOINC/Rosetta@home application running on all 4 cores. changeset: 10649:8e55c5c11475 Build: x86_32p (pae). ------------[ cut here ]------------ kernel BUG at net/core/dev.c:1133! invalid opcode: 0000 [#1] SMP CPU: 0 EIP: 0061:[<c04dceb0>] Not tainted VLI EFLAGS: 00210297 (2.6.16.13-xen