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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-06-17 22:06:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-06-17 22:06:05 -0700 |
| commit | 8648b3053bff39a7ee4c711d74268079c928a657 (patch) | |
| tree | 6de70eedf63c4b965d04040323827f1bc520ccdf /net/ipv4/tcp.c | |
| parent | 00b7050426da8e7e58c889c5c80a19920d2d41b3 (diff) | |
| download | lwn-8648b3053bff39a7ee4c711d74268079c928a657.tar.gz lwn-8648b3053bff39a7ee4c711d74268079c928a657.zip | |
[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/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index ff6ccda9ff46..74998f250071 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); |