[spp] [PATCH 2/6] Update diagrams

[ogawa.yasufumi at lab.ntt.co.jp]

From: Yasufumi Ogawa <ogawa.yasufumi at lab.ntt.co.jp>

Network diagrams of ascii art are displayed inappropriately because
directives are not given properly.

Add code directive to indicate the part of diagrams.

This change includes some updates for command line examples
remained to be modified.

Signed-off-by: Yasufumi Ogawa <ogawa.yasufumi at lab.ntt.co.jp>
---
 docs/setup_guide.md | 61 +++++++++++++++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 23 deletions(-)

diff --git a/docs/setup_guide.md b/docs/setup_guide.md
index 88e8999..d2937c3 100644
--- a/docs/setup_guide.md
+++ b/docs/setup_guide.md
@@ -104,7 +104,7 @@ Start spp_vm (Inside the VM)
 ----------------------------
 
 ```sh
-sudo ./src/vm/src/vm/x86_64-native-linuxapp-gcc/spp_vm \
+$ sudo ./src/vm/src/vm/x86_64-native-linuxapp-gcc/spp_vm \
 	-c 0x03 -n 4 \
 	--proc-type=primary \
 	-- \
@@ -119,6 +119,7 @@ Test Setups
 Test Setup 1: Single NFV
 ------------------------
 
+```
                                                                         __
                                     +--------------+                      |
                                     |    spp_nfv   |                      |
@@ -140,19 +141,19 @@ Test Setup 1: Single NFV
                               |                           |
                               :                           v
 
-Configuration for L2fwd
-~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-```sh
+### Configuration for L2fwd
+
+```
 spp > sec 0;patch 0 1
 spp > sec 0;patch 1 0
 spp > sec 0;forward
 ```
 
-Configuration for loopback
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+### Configuration for loopback
 
-```sh
+```
 spp > sec 0;patch 0 0
 spp > sec 0;patch 1 1
 spp > sec 0;forward
@@ -161,6 +162,7 @@ spp > sec 0;forward
 Test Setup 2: Dual NFV
 ----------------------
 
+```
                                                                         __
                          +--------------+          +--------------+       |
                          |    spp_nfv   |          |    spp_nfv   |       |
@@ -182,16 +184,18 @@ Test Setup 2: Dual NFV
                               |                           |
                               :                           v
 
-Configuration for L2fwd
-~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-```sh
+### Configuration for L2fwd
+
+```
 spp > sec 0;patch 0 1
 spp > sec 1;patch 1 0
 spp > sec 0;forward
 spp > sec 1;forward
 ```
 
+```
 
                                                                         __
                          +--------------+          +--------------+       |
@@ -214,10 +218,11 @@ spp > sec 1;forward
                               |                           |
                               v                           v
 
-Configuration for loopback
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-```sh
+### Configuration for loopback
+
+```
 spp > sec 0;patch 0 0
 spp > sec 1;patch 1 1
 spp > sec 0;forward
@@ -227,6 +232,7 @@ spp > sec 1;forward
 Test Setup 3: Dual NFV with ring pmd
 ------------------------------------
 
+```
                                                                         __
                        +----------+      ring        +----------+         |
                        |  spp_nfv |    +--------+    |  spp_nfv |         |
@@ -248,10 +254,11 @@ Test Setup 3: Dual NFV with ring pmd
                               |                           |
                               :                           v
 
-Configuration for Uni directional L2fwd
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+```
 
-```sh
+### Configuration for Uni directional L2fwd
+
+```
 spp > sec 0;add ring 0
 spp > sec 1;add ring 0
 spp > sec 0;patch 0 2
@@ -260,6 +267,7 @@ spp > sec 0;forward
 spp > sec 1;forward
 ```
 
+```
                                                                         __
                                          ring                             |
                                        +--------+                         |
@@ -284,10 +292,11 @@ spp > sec 1;forward
                               |                           |
                               v                           v
 
-Configuration for L2fwd
-~~~~~~~~~~~~~~~~~~~~~~~
+```
+
+### Configuration for L2fwd
 
-```sh
+```
 spp > sec 0;add ring 0
 spp > sec 0;add ring 1
 spp > sec 1;add ring 0
@@ -303,6 +312,7 @@ spp > sec 1;forward
 Test Setup 4: Single NFV with VM through vhost pmd
 --------------------------------------------------
 
+```
                                                    __
                           +----------------------+   |
                           | guest                |   |
@@ -336,13 +346,14 @@ Test Setup 4: Single NFV with VM through vhost pmd
                               |                           |
                               :                           v
 
+```
+
 Legend:-
 sec 0 = spp_nfv
 sec 1 = spp_vm
 
 
-Configuration for Uni directional L2fwd
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+### Configuration for Uni directional L2fwd
 
 ```sh
 [rm –rf /tmp/sock0]
@@ -358,15 +369,19 @@ spp > sec 0;forward
 
 Optimizing qemu performance
 ---------------------------
+
 First find out the PID for qemu-system-x86 process
-ps ea
+
+```sh
+$ ps ea
    PID TTY      STAT   TIME COMMAND
 192606 pts/11   Sl+    4:42 ./x86_64-softmmu/qemu-system-x86_64 -cpu host -enable-kvm -object memory-backend-file,id=mem,siz
+```
 
 Using pstree to list out qemu-system-x86_64 threads:-
 
 ```sh
-pstree -p 192606
+$ pstree -p 192606
 qemu-system-x86(192606)--+--{qemu-system-x8}(192607)
                          |--{qemu-system-x8}(192623)
                          |--{qemu-system-x8}(192624)
-- 
2.13.1