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net/sched: add block pointer to tc_cls_common_offload structure

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Some actions like the police action are stateful and could share state
between devices. This is incompatible with offloading to multiple devices
and drivers might want to test for shared blocks when offloading.
Store a pointer to the tcf_block structure in the tc_cls_common_offload
structure to allow drivers to determine when offloads apply to a shared
block.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren
2019-05-04 04:46:25 -07:00
committed by David S. Miller
parent 12f02b6b15
commit 88c44a5200
5 changed files with 38 additions and 17 deletions
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7
net/sched/cls_bpf.c
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@@ -157,7 +157,7 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog,
skip_sw = prog && tc_skip_sw(prog->gen_flags);
obj = prog ?: oldprog;
tc_cls_common_offload_init(&cls_bpf.common, tp, obj->gen_flags,
tc_cls_common_offload_init(&cls_bpf.common, tp, obj->gen_flags, block,
extack);
cls_bpf.command = TC_CLSBPF_OFFLOAD;
cls_bpf.exts = &obj->exts;
@@ -227,7 +227,8 @@ static void cls_bpf_offload_update_stats(struct tcf_proto *tp,
struct tcf_block *block = tp->chain->block;
struct tc_cls_bpf_offload cls_bpf = {};
tc_cls_common_offload_init(&cls_bpf.common, tp, prog->gen_flags, NULL);
tc_cls_common_offload_init(&cls_bpf.common, tp, prog->gen_flags, block,
NULL);
cls_bpf.command = TC_CLSBPF_STATS;
cls_bpf.exts = &prog->exts;
cls_bpf.prog = prog->filter;
@@ -669,7 +670,7 @@ static int cls_bpf_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
continue;
tc_cls_common_offload_init(&cls_bpf.common, tp, prog->gen_flags,
extack);
block, extack);
cls_bpf.command = TC_CLSBPF_OFFLOAD;
cls_bpf.exts = &prog->exts;
cls_bpf.prog = add ? prog->filter : NULL;