On Fri, 5 Jan 2024 14:44:00 +0000 Madhuker Mythri <madhuker.myt...@oracle.com> wrote:
> Hi Stephen, > > The BPF helper man pages implies in that way and the SKB data pointer access > was working till 5.4 kernel also, however from Kernel-5.15 version, we do see > eBPF verifier throws error when we use SKB data pointer access. > So, I had used this helper functions and able to resolve the errors. This is > helper functions are safe to use and also protects from any non-linear skb > data buffer access also. > > So, I think using helper functions is better and safe way to access the SKB > data, instead of pointer access. > > Thanks, > Madhuker. Using the accessors may mean it won't work with older kernels, but that is not a huge concern given how fragile this code is.
