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authorWillem de Bruijn <willemb@google.com>2017-01-08 01:06:35 +0300
committerDavid S. Miller <davem@davemloft.net>2017-01-09 04:58:52 +0300
commite7246e122aaa99ebbb8ad7da80f35a20577bd8af (patch)
treee1da3b73bd34b4e85b7b781276aa3ab65acb15d4 /drivers/net/ifb.c
parentd6264071ce7d100a2b7c1f295167796ab5178caf (diff)
downloadlinux-e7246e122aaa99ebbb8ad7da80f35a20577bd8af.tar.xz
net-tc: extract skip classify bit from tc_verd
Packets sent by the IFB device skip subsequent tc classification. A single bit governs this state. Move it out of tc_verd in anticipation of removing that __u16 completely. The new bitfield tc_skip_classify temporarily uses one bit of a hole, until tc_verd is removed completely in a follow-up patch. Remove the bit hole comment. It could be 2, 3, 4 or 5 bits long. With that many options, little value in documenting it. Introduce a helper function to deduplicate the logic in the two sites that check this bit. The field tc_skip_classify is set only in IFB on skbs cloned in act_mirred, so original packet sources do not have to clear the bit when reusing packets (notably, pktgen and octeon). Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ifb.c')
-rw-r--r--drivers/net/ifb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 082534e187fc..442c4c4a9606 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -81,7 +81,7 @@ static void ifb_ri_tasklet(unsigned long _txp)
u32 from = G_TC_FROM(skb->tc_verd);
skb->tc_verd = 0;
- skb->tc_verd = SET_TC_NCLS(skb->tc_verd);
+ skb->tc_skip_classify = 1;
u64_stats_update_begin(&txp->tsync);
txp->tx_packets++;