tcp: remove dead code after CHECKSUM_PARTIAL adoption

Since all skbs in write/rtx queues have CHECKSUM_PARTIAL,
we can remove dead code.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 10 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f3e52bc98980..2c6aec2643e8 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -561,16 +561,9 @@ void __tcp_v4_send_check(struct sk_buff *skb, __be32 saddr, __be32 daddr)
 {
         struct tcphdr *th = tcp_hdr(skb);
 
-        if (skb->ip_summed == CHECKSUM_PARTIAL) {
-                th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);
-                skb->csum_start = skb_transport_header(skb) - skb->head;
-                skb->csum_offset = offsetof(struct tcphdr, check);
-        } else {
-                th->check = tcp_v4_check(skb->len, saddr, daddr,
-                                         csum_partial(th,
-                                                      th->doff << 2,
-                                                      skb->csum));
-        }
+        th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);
+        skb->csum_start = skb_transport_header(skb) - skb->head;
+        skb->csum_offset = offsetof(struct tcphdr, check);
 }
 
 /* This routine computes an IPv4 TCP checksum. */