crypto/chcr: IPV6 code needs to be in CONFIG_IPV6

Error messages seen while building kernel with CONFIG_IPV6
disabled.

Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/crypto/chelsio/chcr_ktls.c b/drivers/crypto/chelsio/chcr_ktls.c
index f55b871521661de410eec4f516c59fcfd744b7fc..91dee616d15e71e39f7f17f566eb9f47cb993392 100644 (file)
--- a/drivers/crypto/chelsio/chcr_ktls.c
+++ b/drivers/crypto/chelsio/chcr_ktls.c
@@ -221,6 +221,7 @@ static int chcr_ktls_act_open_req(struct sock *sk,
        return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
 /*
  * chcr_ktls_act_open_req6: creates TCB entry for ipv6 connection.
  * @sk - tcp socket.
@@ -270,6 +271,7 @@ static int chcr_ktls_act_open_req6(struct sock *sk,
 
        return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
 }
+#endif /* #if IS_ENABLED(CONFIG_IPV6) */
 
 /*
  * chcr_setup_connection:  create a TCB entry so that TP will form tcp packets.
@@ -290,20 +292,26 @@ static int chcr_setup_connection(struct sock *sk,
        tx_info->atid = atid;
        tx_info->ip_family = sk->sk_family;
 
-       if (sk->sk_family == AF_INET ||
-           (sk->sk_family == AF_INET6 && !sk->sk_ipv6only &&
-            ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
+       if (sk->sk_family == AF_INET) {
                tx_info->ip_family = AF_INET;
                ret = chcr_ktls_act_open_req(sk, tx_info, atid);
+#if IS_ENABLED(CONFIG_IPV6)
        } else {
-               tx_info->ip_family = AF_INET6;
-               ret =
-               cxgb4_clip_get(tx_info->netdev,
-                              (const u32 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8,
-                              1);
-               if (ret)
-                       goto out;
-               ret = chcr_ktls_act_open_req6(sk, tx_info, atid);
+               if (!sk->sk_ipv6only &&
+                   ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED) {
+                       tx_info->ip_family = AF_INET;
+                       ret = chcr_ktls_act_open_req(sk, tx_info, atid);
+               } else {
+                       tx_info->ip_family = AF_INET6;
+                       ret = cxgb4_clip_get(tx_info->netdev,
+                                            (const u32 *)
+                                            &sk->sk_v6_rcv_saddr.s6_addr,
+                                            1);
+                       if (ret)
+                               goto out;
+                       ret = chcr_ktls_act_open_req6(sk, tx_info, atid);
+               }
+#endif
        }
 
        /* if return type is NET_XMIT_CN, msg will be sent but delayed, mark ret
@@ -394,11 +402,13 @@ void chcr_ktls_dev_del(struct net_device *netdev,
        if (tx_info->l2te)
                cxgb4_l2t_release(tx_info->l2te);
 
+#if IS_ENABLED(CONFIG_IPV6)
        /* clear clip entry */
        if (tx_info->ip_family == AF_INET6)
                cxgb4_clip_release(netdev,
                                   (const u32 *)&sk->sk_v6_daddr.in6_u.u6_addr8,
                                   1);
+#endif
 
        /* clear tid */
        if (tx_info->tid != -1) {
@@ -491,12 +501,16 @@ int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk,
                goto out2;
 
        /* get peer ip */
-       if (sk->sk_family == AF_INET ||
-           (sk->sk_family == AF_INET6 && !sk->sk_ipv6only &&
-            ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
+       if (sk->sk_family == AF_INET) {
                memcpy(daaddr, &sk->sk_daddr, 4);
+#if IS_ENABLED(CONFIG_IPV6)
        } else {
-               memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
+               if (!sk->sk_ipv6only &&
+                   ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)
+                       memcpy(daaddr, &sk->sk_daddr, 4);
+               else
+                       memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
+#endif
        }
 
        /* get the l2t index */
@@ -903,7 +917,9 @@ chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
        struct fw_eth_tx_pkt_wr *wr;
        struct cpl_tx_pkt_core *cpl;
        u32 ctrl, iplen, maclen;
+#if IS_ENABLED(CONFIG_IPV6)
        struct ipv6hdr *ip6;
+#endif
        unsigned int ndesc;
        struct tcphdr *tcp;
        int len16, pktlen;
@@ -958,9 +974,11 @@ chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
                /* we need to correct ip header len */
                ip = (struct iphdr *)(buf + maclen);
                ip->tot_len = htons(pktlen - maclen);
+#if IS_ENABLED(CONFIG_IPV6)
        } else {
                ip6 = (struct ipv6hdr *)(buf + maclen);
                ip6->payload_len = htons(pktlen - maclen - iplen);
+#endif
        }
        /* now take care of the tcp header, if fin is not set then clear push
         * bit as well, and if fin is set, it will be sent at the last so we