path: root/net/ipv4/af_inet.c
diff options
authorEdward Cree <ecree@solarflare.com>2018-07-02 16:14:12 +0100
committerDavid S. Miller <davem@davemloft.net>2018-07-04 14:06:20 +0900
commit17266ee939849cb095ed7dd9edbec4162172226b (patch)
tree63f620fc217d311860a46c913efa109fad89f4f6 /net/ipv4/af_inet.c
parentnet: core: propagate SKB lists through packet_type lookup (diff)
net: ipv4: listified version of ip_rcv
Also involved adding a way to run a netfilter hook over a list of packets. Rather than attempting to make netfilter know about lists (which would be a major project in itself) we just let it call the regular okfn (in this case ip_rcv_finish()) for any packets it steals, and have it give us back a list of packets it's synchronously accepted (which normally NF_HOOK would automatically call okfn() on, but we want to be able to potentially pass the list to a listified version of okfn().) The netfilter hooks themselves are indirect calls that still happen per- packet (see nf_hook_entry_hookfn()), but again, changing that can be left for future work. There is potential for out-of-order receives if the netfilter hook ends up synchronously stealing packets, as they will be processed before any accepts earlier in the list. However, it was already possible for an asynchronous accept to cause out-of-order receives, so presumably this is considered OK. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/af_inet.c')
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 9263a2c114e0..c716be13d58c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1882,6 +1882,7 @@ fs_initcall(ipv4_offload_init);
static struct packet_type ip_packet_type __read_mostly = {
.type = cpu_to_be16(ETH_P_IP),
.func = ip_rcv,
+ .list_func = ip_list_rcv,
static int __init inet_init(void)