diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-03-24 02:30:40 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-24 12:48:39 -0700 |
| commit | 7a27f6ab41356ecba47ec2bec6d635704c169779 (patch) | |
| tree | 46bca716fa4bec1853da177195c48c6a7ad081a5 /include | |
| parent | c63a7cc4d795c004b70cb935e8ba77d9e764f0ba (diff) | |
| download | linux-7a27f6ab41356ecba47ec2bec6d635704c169779.tar.bz2 | |
netfilter: flowtable: use dev_fill_forward_path() to obtain egress device
The egress device in the tuple is obtained from route. Use
dev_fill_forward_path() instead to provide the real egress device for
this flow whenever this is available.
The new FLOW_OFFLOAD_XMIT_DIRECT type uses dev_queue_xmit() to transmit
ethernet frames. Cache the source and destination hardware address to
use dev_queue_xmit() to transfer packets.
The FLOW_OFFLOAD_XMIT_DIRECT replaces FLOW_OFFLOAD_XMIT_NEIGH if
dev_fill_forward_path() finds a direct transmit path.
In case of topology updates, if peer is moved to different bridge port,
the connection will time out, reconnect will result in a new entry with
the correct path. Snooping fdb updates would allow for cleaning up stale
flowtable entries.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netfilter/nf_flow_table.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h index dca9fc66405f..41c8436bc77e 100644 --- a/include/net/netfilter/nf_flow_table.h +++ b/include/net/netfilter/nf_flow_table.h @@ -92,6 +92,7 @@ enum flow_offload_tuple_dir { enum flow_offload_xmit_type { FLOW_OFFLOAD_XMIT_NEIGH = 0, FLOW_OFFLOAD_XMIT_XFRM, + FLOW_OFFLOAD_XMIT_DIRECT, }; struct flow_offload_tuple { @@ -120,8 +121,14 @@ struct flow_offload_tuple { xmit_type:2; u16 mtu; - - struct dst_entry *dst_cache; + union { + struct dst_entry *dst_cache; + struct { + u32 ifidx; + u8 h_source[ETH_ALEN]; + u8 h_dest[ETH_ALEN]; + } out; + }; }; struct flow_offload_tuple_rhash { @@ -168,6 +175,11 @@ struct nf_flow_route { struct { u32 ifindex; } in; + struct { + u32 ifindex; + u8 h_source[ETH_ALEN]; + u8 h_dest[ETH_ALEN]; + } out; enum flow_offload_xmit_type xmit_type; } tuple[FLOW_OFFLOAD_DIR_MAX]; }; |