Struct sk_buff_head
Hello! I read code from file include/linux/skbuff.h and I have question about sk_buff_head structure. This structure is pointing to next and prev sk_buff structure on list. But I found the same pointers in first field structure sk_buff- it is union, which has pointers to next and prev sk_buff structures on list. Is this union replace sk_buff_head structure? I didn`t found any field in sk_buff, which may use sk_buff_head, but I found some functions which uses this structure.
Hi, On 06/07/2017 09:36 PM, wiktoria.lewicka wrote:
I read code from file include/linux/skbuff.h and I have question about sk_buff_head structure. [...] Is this union replace sk_buff_head structure? I didn`t found any field in sk_buff, which may use sk_buff_head, [...]
As I can see it, sk_buff can be on double-linked list, and then it is linked by next and prev, or it is referenced by red-black tree, rb_node, depending of some network logic (packet type ?) Both are used by functions operating on structures. -- Best regards, Kamil Konieczny Samsung R&D Institute Poland
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Kamil Konieczny -
wiktoria.lewicka