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authorHerbert Xu <herbert@gondor.apana.org.au>2006-06-17 22:06:05 -0700
committerDavid S. Miller <davem@davemloft.net>2006-06-17 22:06:05 -0700
commit8648b3053bff39a7ee4c711d74268079c928a657 (patch)
tree6de70eedf63c4b965d04040323827f1bc520ccdf /net/ipv4
parent00b7050426da8e7e58c889c5c80a19920d2d41b3 (diff)
[NET]: Add NETIF_F_GEN_CSUM and NETIF_F_ALL_CSUM
The current stack treats NETIF_F_HW_CSUM and NETIF_F_NO_CSUM identically so we test for them in quite a few places. For the sake of brevity, I'm adding the macro NETIF_F_GEN_CSUM for these two. We also test the disjunct of NETIF_F_IP_CSUM and the other two in various places, for that purpose I've added NETIF_F_ALL_CSUM. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/ip_output.c2
-rw-r--r--net/ipv4/tcp.c10
2 files changed, 3 insertions, 9 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index d4bb3fae4e4..8538aac3d14 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -840,7 +840,7 @@ int ip_append_data(struct sock *sk,
*/
if (transhdrlen &&
length + fragheaderlen <= mtu &&
- rt->u.dst.dev->features&(NETIF_F_IP_CSUM|NETIF_F_NO_CSUM|NETIF_F_HW_CSUM) &&
+ rt->u.dst.dev->features & NETIF_F_ALL_CSUM &&
!exthdrlen)
csummode = CHECKSUM_HW;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ff6ccda9ff4..74998f25007 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -622,14 +622,10 @@ ssize_t tcp_sendpage(struct socket *sock, struct page *page, int offset,
ssize_t res;
struct sock *sk = sock->sk;
-#define TCP_ZC_CSUM_FLAGS (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
-
if (!(sk->sk_route_caps & NETIF_F_SG) ||
- !(sk->sk_route_caps & TCP_ZC_CSUM_FLAGS))
+ !(sk->sk_route_caps & NETIF_F_ALL_CSUM))
return sock_no_sendpage(sock, page, offset, size, flags);
-#undef TCP_ZC_CSUM_FLAGS
-
lock_sock(sk);
TCP_CHECK_TIMER(sk);
res = do_tcp_sendpages(sk, &page, offset, size, flags);
@@ -726,9 +722,7 @@ new_segment:
/*
* Check whether we can use HW checksum.
*/
- if (sk->sk_route_caps &
- (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM |
- NETIF_F_HW_CSUM))
+ if (sk->sk_route_caps & NETIF_F_ALL_CSUM)
skb->ip_summed = CHECKSUM_HW;
skb_entail(sk, tp, skb);