On Mon, Jun 22, 2020 at 9:04 AM Jakub Sitnicki <jakub@xxxxxxxxxxxxxx> wrote: > > To support multi-prog link-based attachments for new netns attach types, we > need to keep track of more than one bpf_link per attach type. Hence, > convert net->bpf.links into a list, that currently can be either empty or > have just one item. > > Instead of reusing bpf_prog_list from bpf-cgroup, we link together > bpf_netns_link's themselves. This makes list management simpler as we don't > have to allocate, initialize, and later release list elements. We can do > this because multi-prog attachment will be available only for bpf_link, and > we don't need to build a list of programs attached directly and indirectly > via links. > > No functional changes intended. > > Signed-off-by: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx> > --- Acked-by: Andrii Nakryiko <andriin@xxxxxx> > include/net/netns/bpf.h | 2 +- > kernel/bpf/net_namespace.c | 42 +++++++++++++++++++++----------------- > 2 files changed, 24 insertions(+), 20 deletions(-) > [...]
