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net/sched: cls_flower: Add support to handle first frag as match field

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Allow setting firstfrag as matching option in tc flower classifier.

 # tc filter add dev eth0 protocol ip parent ffff: \
     flower indev eth0 \
        ip_flags firstfrag
     action mirred egress redirect dev eth1

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Signed-off-by: Simon Horman <simon.horman@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 2018-03-06 18:11:14 +01:00 committed by David S. Miller
parent 08a24239cd
commit 459d153d99
2 changed files with 7 additions and 0 deletions
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1
include/uapi/linux/pkt_cls.h
View file

@ -475,6 +475,7 @@ enum {
enum {
TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT = (1 << 0),
TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST = (1 << 1),
};
/* Match-all classifier */

6
net/sched/cls_flower.c
View file

@ -511,6 +511,9 @@ static int fl_set_key_flags(struct nlattr **tb,
fl_set_key_flag(key, mask, flags_key, flags_mask,
TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
fl_set_key_flag(key, mask, flags_key, flags_mask,
TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
FLOW_DIS_FIRST_FRAG);
return 0;
}
@ -1130,6 +1133,9 @@ static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
fl_get_key_flag(flags_key, flags_mask, &key, &mask,
TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
fl_get_key_flag(flags_key, flags_mask, &key, &mask,
TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
FLOW_DIS_FIRST_FRAG);
_key = cpu_to_be32(key);
_mask = cpu_to_be32(mask);