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tcp: Record Rx hash and NAPI ID in tcp_child_process 

While working on some recent busy poll changes we found that child sockets
were being instantiated without NAPI ID being set.  In our first attempt to
fix it, it was suggested that we should just pull programming the NAPI ID
into the function itself since all callers will need to have it set.

In addition to the NAPI ID change I have dropped the code that was
populating the Rx hash since it was actually being populated in
tcp_get_cookie_sock.

Reported-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2017-03-24 10:08:00 -07:00 committed by David S. Miller
parent 545cd5e5ec
commit e5907459ce
3 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/ipv4/tcp_ipv4.c
View File

@ -1409,8 +1409,6 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
if (!nsk)
goto discard;
if (nsk != sk) {
sock_rps_save_rxhash(nsk, skb);
sk_mark_napi_id(nsk, skb);
if (tcp_child_process(sk, nsk, skb)) {
rsk = nsk;
goto reset;

4
net/ipv4/tcp_minisocks.c
View File

@ -26,6 +26,7 @@
#include <net/tcp.h>
#include <net/inet_common.h>
#include <net/xfrm.h>
#include <net/busy_poll.h>
int sysctl_tcp_abort_on_overflow __read_mostly;
@ -799,6 +800,9 @@ int tcp_child_process(struct sock *parent, struct sock *child,
int ret = 0;
int state = child->sk_state;
/* record NAPI ID of child */
sk_mark_napi_id(child, skb);
tcp_segs_in(tcp_sk(child), skb);
if (!sock_owned_by_user(child)) {
ret = tcp_rcv_state_process(child, skb);

2
net/ipv6/tcp_ipv6.c
View File

@ -1293,8 +1293,6 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
goto discard;
if (nsk != sk) {
sock_rps_save_rxhash(nsk, skb);
sk_mark_napi_id(nsk, skb);
if (tcp_child_process(sk, nsk, skb))
goto reset;
if (opt_skb)