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authorJiri Pirko <jiri@mellanox.com>2018-01-17 11:46:50 +0100
committerDavid S. Miller <davem@davemloft.net>2018-01-17 14:53:57 -0500
commitcaa7260156eb3a1496348a2c69fa68e85183d5d7 (patch)
tree2f085f1102948006fbec3ce4e0dbf3e138f82a78 /net/sched/cls_bpf.c
parentnet: sched: remove classid and q fields from tcf_proto (diff)
downloadlinux-dev-caa7260156eb3a1496348a2c69fa68e85183d5d7.tar.xz
linux-dev-caa7260156eb3a1496348a2c69fa68e85183d5d7.zip
net: sched: keep track of offloaded filters and check tc offload feature
During block bind, we need to check tc offload feature. If it is disabled yet still the block contains offloaded filters, forbid the bind. Also forbid to register callback for a block that already contains offloaded filters, as the play back is not supported now. For keeping track of offloaded filters there is a new counter introduced, alongside with couple of helpers called from cls_* code. These helpers set and clear TCA_CLS_FLAGS_IN_HW flag. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_bpf.c')
-rw-r--r--net/sched/cls_bpf.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index d79cc5086509..cf72aefcf98d 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -167,13 +167,16 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog,
cls_bpf.exts_integrated = obj->exts_integrated;
cls_bpf.gen_flags = obj->gen_flags;
+ if (oldprog)
+ tcf_block_offload_dec(block, &oldprog->gen_flags);
+
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSBPF, &cls_bpf, skip_sw);
if (prog) {
if (err < 0) {
cls_bpf_offload_cmd(tp, oldprog, prog);
return err;
} else if (err > 0) {
- prog->gen_flags |= TCA_CLS_FLAGS_IN_HW;
+ tcf_block_offload_inc(block, &prog->gen_flags);
}
}