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tcp: remove sk_check_csum_caps()

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Since TCP relies on GSO, we do not need this helper anymore.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2018-02-19 11:56:49 -08:00 committed by David S. Miller
parent 74d4a8f8d3
commit dead7cdb0d
2 changed files with 3 additions and 17 deletions
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9
include/net/sock.h
View File

@ -1863,15 +1863,6 @@ static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags)
sk->sk_route_caps &= ~flags;
}
static inline bool sk_check_csum_caps(struct sock *sk)
{
return (sk->sk_route_caps & NETIF_F_HW_CSUM) ||
(sk->sk_family == PF_INET &&
(sk->sk_route_caps & NETIF_F_IP_CSUM)) ||
(sk->sk_family == PF_INET6 &&
(sk->sk_route_caps & NETIF_F_IPV6_CSUM));
}
static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb,
struct iov_iter *from, char *to,
int copy, int offset)

11
net/ipv4/tcp.c
View File

@ -1063,8 +1063,7 @@ EXPORT_SYMBOL_GPL(do_tcp_sendpages);
int tcp_sendpage_locked(struct sock *sk, struct page *page, int offset,
size_t size, int flags)
{
if (!(sk->sk_route_caps & NETIF_F_SG) ||
!sk_check_csum_caps(sk))
if (!(sk->sk_route_caps & NETIF_F_SG))
return sock_no_sendpage_locked(sk, page, offset, size, flags);
tcp_rate_check_app_limited(sk); /* is sending application-limited? */
@ -1190,7 +1189,7 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
goto out_err;
}
zc = sk_check_csum_caps(sk) && sk->sk_route_caps & NETIF_F_SG;
zc = sk->sk_route_caps & NETIF_F_SG;
if (!zc)
uarg->zerocopy = 0;
}
@ -1287,11 +1286,7 @@ new_segment:
goto wait_for_memory;
process_backlog = true;
/*
* Check whether we can use HW checksum.
*/
if (sk_check_csum_caps(sk))
skb->ip_summed = CHECKSUM_PARTIAL;
skb->ip_summed = CHECKSUM_PARTIAL;
skb_entail(sk, skb);
copy = size_goal;