diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2015-04-08 21:26:21 (GMT) |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2015-04-08 21:26:21 (GMT) |
commit | 462b69b1e43ceccab68a47d65b1e46520cd0fdc0 (patch) | |
tree | 3c961fcb5889c5ab14ab36d8ef7421fc96c95959 /net/sched/act_bpf.c | |
parent | d8bf368d0631d4bc2612d8bf2e4e8e74e620d0cc (diff) | |
parent | f22e6e847115abc3a0e2ad7bb18d243d42275af1 (diff) | |
download | linux-462b69b1e43ceccab68a47d65b1e46520cd0fdc0.tar.xz |
Merge branch 'linus' into irq/core to get the GIC updates which
conflict with pending GIC changes.
Conflicts:
drivers/usb/isp1760/isp1760-core.c
Diffstat (limited to 'net/sched/act_bpf.c')
-rw-r--r-- | net/sched/act_bpf.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c index 82c5d7f..5f6288f 100644 --- a/net/sched/act_bpf.c +++ b/net/sched/act_bpf.c @@ -25,21 +25,41 @@ static int tcf_bpf(struct sk_buff *skb, const struct tc_action *a, struct tcf_result *res) { struct tcf_bpf *b = a->priv; - int action; - int filter_res; + int action, filter_res; spin_lock(&b->tcf_lock); + b->tcf_tm.lastuse = jiffies; bstats_update(&b->tcf_bstats, skb); - action = b->tcf_action; filter_res = BPF_PROG_RUN(b->filter, skb); - if (filter_res == 0) { - /* Return code 0 from the BPF program - * is being interpreted as a drop here. - */ - action = TC_ACT_SHOT; + + /* A BPF program may overwrite the default action opcode. + * Similarly as in cls_bpf, if filter_res == -1 we use the + * default action specified from tc. + * + * In case a different well-known TC_ACT opcode has been + * returned, it will overwrite the default one. + * + * For everything else that is unkown, TC_ACT_UNSPEC is + * returned. + */ + switch (filter_res) { + case TC_ACT_PIPE: + case TC_ACT_RECLASSIFY: + case TC_ACT_OK: + action = filter_res; + break; + case TC_ACT_SHOT: + action = filter_res; b->tcf_qstats.drops++; + break; + case TC_ACT_UNSPEC: + action = b->tcf_action; + break; + default: + action = TC_ACT_UNSPEC; + break; } spin_unlock(&b->tcf_lock); |