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...of SOCK_SEQPACKET all sk_buffs are used once - after read some >>>>> data from it, it will be removed, so user will never read rest of the >>>>> data. Thus we need to update credit parameters of the socket like whole >>>>> sk_buff is read - so call 'skb_pull()' for the whole buffer. >>>>> >>>>> Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff") >>>>> Signed-off-by: Arseniy Krasnov <AVKrasnov at sberdevices.ru> >>>>> --- >>>>> net/...

...k driver for upstream one of the things I removed was the zero-copy guest transmit (i.e. netback receive) support. In this mode guest data pages ("foreign pages") were mapped into the backend domain (using Xen grant-table functionality) and placed into the skb''s paged frag list (skb_shinfo(skb)->frags, I hope I am using the right term). Once the page is finished with netback unmaps it in order to return it to the guest (we really want to avoid returning such pages to the general allocation pool!). Unfortunately "page is finished with" is an event which there is no...