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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2006-06-30 13:37:03 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-06-30 14:12:10 -0700 |
| commit | f83ef8c0b58dac17211a4c0b6df0e2b1bd6637b1 (patch) | |
| tree | 61661a587df97cb2a9f73b5d0d1cf30f09644051 /include/net | |
| parent | [NET]: Generalise TSO-specific bits from skb_setup_caps (diff) | |
| download | linux-dev-f83ef8c0b58dac17211a4c0b6df0e2b1bd6637b1.tar.xz linux-dev-f83ef8c0b58dac17211a4c0b6df0e2b1bd6637b1.zip | |
[IPV6]: Added GSO support for TCPv6
This patch adds GSO support for IPv6 and TCPv6. This is based on a patch
by Ananda Raju <Ananda.Raju@neterion.com>. His original description is:
This patch enables TSO over IPv6. Currently Linux network stacks
restricts TSO over IPv6 by clearing of the NETIF_F_TSO bit from
"dev->features". This patch will remove this restriction.
This patch will introduce a new flag NETIF_F_TSO6 which will be used
to check whether device supports TSO over IPv6. If device support TSO
over IPv6 then we don't clear of NETIF_F_TSO and which will make the
TCP layer to create TSO packets. Any device supporting TSO over IPv6
will set NETIF_F_TSO6 flag in "dev->features" along with NETIF_F_TSO.
In case when user disables TSO using ethtool, NETIF_F_TSO will get
cleared from "dev->features". So even if we have NETIF_F_TSO6 we don't
get TSO packets created by TCP layer.
SKB_GSO_TCPV4 renamed to SKB_GSO_TCP to make it generic GSO packet.
SKB_GSO_UDPV4 renamed to SKB_GSO_UDP as UFO is not a IPv4 feature.
UFO is supported over IPv6 also
The following table shows there is significant improvement in
throughput with normal frames and CPU usage for both normal and jumbo.
--------------------------------------------------
| | 1500 | 9600 |
| ------------------|-------------------|
| | thru CPU | thru CPU |
--------------------------------------------------
| TSO OFF | 2.00 5.5% id | 5.66 20.0% id |
--------------------------------------------------
| TSO ON | 2.63 78.0 id | 5.67 39.0% id |
--------------------------------------------------
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/ip6_route.h | 2 | ||||
| -rw-r--r-- | include/net/tcp_ecn.h | 4 |
2 files changed, 2 insertions, 4 deletions
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index a398ae5e30f9..ab29dafb1a6a 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -146,7 +146,7 @@ static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, struct rt6_info *rt = (struct rt6_info *) dst; write_lock(&sk->sk_dst_lock); - __sk_dst_set(sk, dst); + sk_setup_caps(sk, dst); np->daddr_cache = daddr; np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; write_unlock(&sk->sk_dst_lock); diff --git a/include/net/tcp_ecn.h b/include/net/tcp_ecn.h index 7bb366f70934..4629d77173f2 100644 --- a/include/net/tcp_ecn.h +++ b/include/net/tcp_ecn.h @@ -55,9 +55,7 @@ static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp, if (tp->ecn_flags&TCP_ECN_QUEUE_CWR) { tp->ecn_flags &= ~TCP_ECN_QUEUE_CWR; skb->h.th->cwr = 1; - if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) - skb_shinfo(skb)->gso_type |= - SKB_GSO_TCPV4_ECN; + skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN; } } else { /* ACK or retransmitted segment: clear ECT|CE */ |