a Linux and Tech Youtube Channel for advance Linux users, systems and network software programmers and tech enthusiasts
You can check fragmented packets as suggested in the video by tapping RX path in net/core/dev.c – __netif_receive_skb_core() API as shown below from the Kernel-source version 6.5.9:
https://youtu.be/z4Any08ImcQ
https://youtu.be/1zE2GJw7AbA
Refer:Linux Kernel Map picture/banner ↗Socket Buffer Functions ↗
Refer:skb_clone() – duplicate an sk_buff ↗skb_copy() – create private copy of an sk_buff ↗ Here is the copy paste of skb_clone() and skb_copy() APIs (/net/core/skbuff.c) from the Kernel-source version 6.5.9…
https://youtu.be/0elOirGA_5g
Refer:skb_headroom() – bytes at buffer head ↗skb_tailroom() – bytes at buffer end ↗ Here is the copy paste of skb_headroom() and skb_tailroom() APIs (/include/linux/skbuff.h) from the Kernel-source version 6.5.8 for…
Refer:skb_put() – add data to a buffer ↗ Here is the copy paste of skb_put() API (/net/core/skbuff.c) from the Kernel-source version 6.5.8 for quick reference:
Refer:skb_pull() – remove data from the start of a buffer ↗ Here is the copy paste of skb_pull() API (/net/core/skbuff.c) from the Kernel-source version 6.5.8 for quick reference: Which points…
Refer:skb_trim() – remove end from a buffer ↗ And here is the copy paste of skb_trim() API (/net/core/skbuff.c) from the Kernel-source version 6.5.8 for quick reference: Which points to __skb_trim()…
thelinuxchannel