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Make installation prefixes more realistic
* Add/document cmake variables that control various installation path options. See README.md for examples. * Updated README a bit * Hide helpers.h from include requirements * Install things to real paths in a proper way. Header files will go into <prefix>/share/bcc/include. * Move the kickstart script readme to its own directory. Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
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Brenden Blanco
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Jun 10, 2015
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,68 @@ | ||
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| ## Fedora Demo VM | ||
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| Before running the script, ensure that virt-install is available on the system. | ||
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| `./build_bpf_demo.sh -n bpf-demo -k bpf_demo.ks.erb` | ||
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| After setting up the initial VM, log in (the default password is 'iovisor') | ||
| and determine the DHCP IP. SSH to this IP as root. | ||
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| To set up a kernel with the right options, run `bpf-kernel-setup`. | ||
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| ``` | ||
| [root@bpf-demo ~]# bpf-kernel-setup | ||
| Cloning into 'net-next'... | ||
| ``` | ||
| After pulling the net-next branch, the kernel config menu should pop up. Ensure | ||
| that the below settings are proper. | ||
| ``` | ||
| General setup ---> | ||
| [*] Enable bpf() system call | ||
| Networking support ---> | ||
| Networking options ---> | ||
| QoS and/or fair queueing ---> | ||
| <M> BPF-based classifier | ||
| <M> BPF based action | ||
| [*] enable BPF Just In Time compiler | ||
| ``` | ||
| Once the .config is saved, the build will proceed and install the resulting | ||
| kernel. This kernel has updated userspace headers (e.g. the bpf() syscall) which | ||
| install into /usr/local/include...proper packaging for this will be | ||
| distro-dependent. | ||
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| Next, run `bpf-llvm-setup` to pull and compile LLVM with BPF support enabled. | ||
| ``` | ||
| [root@bpf-demo ~]# bpf-llvm-setup | ||
| Cloning into 'llvm'... | ||
| ``` | ||
| The resulting libraries will be installed into /opt/local/llvm. | ||
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| Next, reboot into the new kernel, either manually or by using the kexec helper. | ||
| ``` | ||
| [root@bpf-demo ~]# kexec-4.1.0-rc1+ | ||
| Connection to 192.168.122.247 closed by remote host. | ||
| Connection to 192.168.122.247 closed. | ||
| ``` | ||
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| Reconnect and run the final step, building and testing bcc. | ||
| ``` | ||
| [root@bpf-demo ~]# bcc-setup | ||
| Cloning into 'bcc'... | ||
| ... | ||
| Linking CXX shared library libbpfprog.so | ||
| [100%] Built target bpfprog | ||
| ... | ||
| Running tests... | ||
| Test project /root/bcc/build | ||
| Start 1: py_test1 | ||
| 1/4 Test #1: py_test1 ......................... Passed 0.24 sec | ||
| Start 2: py_test2 | ||
| 2/4 Test #2: py_test2 ......................... Passed 0.53 sec | ||
| Start 3: py_trace1 | ||
| 3/4 Test #3: py_trace1 ........................ Passed 0.09 sec | ||
| Start 4: py_trace2 | ||
| 4/4 Test #4: py_trace2 ........................ Passed 1.06 sec | ||
| 100% tests passed, 0 tests failed out of 4 | ||
| ``` |
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| /* | ||
| * Copyright (c) 2015 PLUMgrid, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| struct ethernet_t { | ||
| unsigned long long dst:48; | ||
| unsigned long long src:48; | ||
| unsigned int type:16; | ||
| } __attribute__((packed)); | ||
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| struct dot1q_t { | ||
| unsigned short pri:3; | ||
| unsigned short cfi:1; | ||
| unsigned short vlanid:12; | ||
| unsigned short type; | ||
| } __attribute__((packed)); | ||
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| struct arp_t { | ||
| unsigned short htype; | ||
| unsigned short ptype; | ||
| unsigned char hlen; | ||
| unsigned char plen; | ||
| unsigned short oper; | ||
| unsigned long long sha:48; | ||
| unsigned long long spa:32; | ||
| unsigned long long tha:48; | ||
| unsigned int tpa; | ||
| } __attribute__((packed)); | ||
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| struct ip_t { | ||
| unsigned char ver:4; // byte 0 | ||
| unsigned char hlen:4; | ||
| unsigned char tos; | ||
| unsigned short tlen; | ||
| unsigned short identification; // byte 4 | ||
| unsigned short ffo_unused:1; | ||
| unsigned short df:1; | ||
| unsigned short mf:1; | ||
| unsigned short foffset:13; | ||
| unsigned char ttl; // byte 8 | ||
| unsigned char nextp; | ||
| unsigned short hchecksum; | ||
| unsigned int src; // byte 12 | ||
| unsigned int dst; // byte 16 | ||
| } __attribute__((packed)); | ||
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| struct udp_t { | ||
| unsigned short sport; | ||
| unsigned short dport; | ||
| unsigned short length; | ||
| unsigned short crc; | ||
| } __attribute__((packed)); | ||
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| struct tcp_t { | ||
| unsigned short src_port; // byte 0 | ||
| unsigned short dst_port; | ||
| unsigned int seq_num; // byte 4 | ||
| unsigned int ack_num; // byte 8 | ||
| unsigned char offset:4; // byte 12 | ||
| unsigned char reserved:4; | ||
| unsigned char flag_cwr:1; | ||
| unsigned char flag_ece:1; | ||
| unsigned char flag_urg:1; | ||
| unsigned char flag_ack:1; | ||
| unsigned char flag_psh:1; | ||
| unsigned char flag_rst:1; | ||
| unsigned char flag_syn:1; | ||
| unsigned char flag_fin:1; | ||
| unsigned short rcv_wnd; | ||
| unsigned short cksum; // byte 16 | ||
| unsigned short urg_ptr; | ||
| } __attribute__((packed)); |
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