Michael Holzheu 9db7f2b818 s390/bpf: recache skb->data/hlen for skb_vlan_push/pop ... Allow eBPF programs attached to TC qdiscs call skb_vlan_push/pop via helper functions. These functions may change skb->data/hlen. This data is cached by s390 JIT to improve performance of ld_abs/ld_ind instructions. Therefore after a change we have to reload the data. In case of usage of skb_vlan_push/pop, in the prologue we store the SKB pointer on the stack and restore it after BPF_JMP_CALL to skb_vlan_push/pop. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-07-29 14:59:58 -07:00
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bpf_jit.h	s390/bpf: recache skb->data/hlen for skb_vlan_push/pop	2015-07-29 14:59:58 -07:00
bpf_jit.S	s390/bpf: Add s390x eBPF JIT compiler backend	2015-04-15 12:23:49 +02:00
bpf_jit_comp.c	s390/bpf: recache skb->data/hlen for skb_vlan_push/pop	2015-07-29 14:59:58 -07:00
Makefile	s390/bpf,jit: BPF Just In Time compiler for s390	2012-09-26 15:44:49 +02:00