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xt_action_param

param	used by

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cache alignment and packing

1. Data is transferred between memory and cache in blocks of fixed size, called cache lines or cache blocks. When a cache line is copied from memory into the cache, a cache entry is created.
2. The cache entry will include the copied data as well as the requested memory location (called a tag).

Resources

1. https://stackoverflow.com/questions/39971639/what-does-cacheline-aligned-mean
2. https://en.algorithmica.org/hpc/cpu-cache/cache-lines/
3. https://en.algorithmica.org/hpc/cpu-cache/alignment/
4. https://en.wikipedia.org/wiki/Data_structure_alignment
5. https://ryonaldteofilo.medium.com/memory-and-data-alignment-in-c-b870b02c80fb

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Host

$ sudo qemu-system-x86_64 \
 --enable-kvm \
 -cpu host -smp $(nproc) \
 -m 8192 \
 -kernel linux-next/arch/x86_64/boot/bzImage \
 -append "rw nokaslr root=/dev/vda1" \
 -device virtio-net,netdev=vmnic -netdev user,id=vmnic \
 -device VGA,vgamem_mb=256 \

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• DTSchema YAMLs and deps
• Testing the binding
• General Tips
• Resources

DTSchema YAMLs and deps

1. First convert a Devicetree '.txt' to yaml. Let's take my patch for example : https://lore.kernel.org/all/20240423115749.15786-1-sheharyaar48@gmail.com/

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Table of Contents

• Lua C API
  • Lua C core
  • Stack
    • Indexing
    • Stack operations
  • Data Types
  • Error handling
  • Table Manipulation

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Blockchain Resources

Pre-requisites

• Cryptography : Study about hashing, one-way hashes, elliptic curves and popular ones like sha256, etc. (just a basic idea)
• Data Structure : Merkle trees, Merkle patricia trees
• Distributed Systems and Networking : UDP features and uses, Pub-sub protocols, Gossip protocols, DNS and service discovery

Resources for BlockChain

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Fortran90 Notes

Contents

1. Variables
2. Arrays
3. Dynamic Allocation
4. Loops and Conditionals
5. File I/O
6. Functions / Routines

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CSS Notes

Box Model

• Every element has a box around it. Display, margin, border and padding affect the behaviour of the box

Display

• Changing the value of the display property can change whether the outer display type of a box is block or inline. This changes the way it displays alongside other elements in the layout.
• Flex and Grid (display: flex and display: grid) are used to affect the contents
• Block and inline
• If an element is given block display, then it has a newline before and after it (it starts in a new line).

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Go Concurrency

Contents

1. Goroutines
   1. GO Waitgroups
   2. GO Scheduler
   3. GO States
   4. Synchronous system calls
   5. Netpoller