2020-04-08 20:22:51

by Arnd Bergmann

[permalink] [raw]
Subject: [PATCH] cxgb4/chcr: fix building without IPv6

When IPv6 support is completely disabled, the chelsio driver fails
to build with

drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_act_open_req6':
include/net/sock.h:380:37: error: 'struct sock_common' has no member named 'skc_v6_rcv_saddr'; did you mean 'skc_rcv_saddr'?
380 | #define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
| ^~~~~~~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:258:37: note: in expansion of macro 'sk_v6_rcv_saddr'
258 | cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0];
| ^~~~~~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:260:36: note: in expansion of macro 'sk_v6_daddr'
260 | cpl->peer_ip_hi = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[0];
| ^~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:261:36: note: in expansion of macro 'sk_v6_daddr'
261 | cpl->peer_ip_lo = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[8];
| ^~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:296:27: note: in expansion of macro 'sk_v6_daddr'
296 | ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
| ^~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:303:29: note: in expansion of macro 'sk_v6_rcv_saddr'
303 | (const u32 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8,
| ^~~~~~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_dev_del':
drivers/crypto/chelsio/chcr_ktls.c:401:26: note: in expansion of macro 'sk_v6_daddr'
401 | (const u32 *)&sk->sk_v6_daddr.in6_u.u6_addr8,
| ^~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_dev_add':
drivers/crypto/chelsio/chcr_ktls.c:495:27: note: in expansion of macro 'sk_v6_daddr'
495 | ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
| ^~~~~~~~~~~
drivers/crypto/chelsio/chcr_ktls.c:498:22: note: in expansion of macro 'sk_v6_daddr'
498 | memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
| ^~~~~~~~~~~

There is probably a good way to fix it, but this patch just adds a
bunch of #if checks to get it to build again, which gets a bit
ugly.

Fixes: 62370a4f346d ("cxgb4/chcr: Add ipv6 support and statistics")
Signed-off-by: Arnd Bergmann <[email protected]>
---
If you have a better idea to fix it, please send a different patch
instead and treat this as a bug report. ;-)
---
drivers/crypto/chelsio/chcr_ktls.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/chelsio/chcr_ktls.c b/drivers/crypto/chelsio/chcr_ktls.c
index 73658b71d4a3..3d3f8dfa4e96 100644
--- a/drivers/crypto/chelsio/chcr_ktls.c
+++ b/drivers/crypto/chelsio/chcr_ktls.c
@@ -222,6 +222,7 @@ 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.
@@ -271,6 +272,7 @@ static int chcr_ktls_act_open_req6(struct sock *sk,

return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
}
+#endif

/*
* chcr_setup_connection: create a TCB entry so that TP will form tcp packets.
@@ -291,12 +293,16 @@ 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
+#if IS_ENABLED(CONFIG_IPV6)
+ || (sk->sk_family == AF_INET6 && !sk->sk_ipv6only &&
+ ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)
+#endif
+ ) {
tx_info->ip_family = AF_INET;
ret = chcr_ktls_act_open_req(sk, tx_info, atid);
} else {
+#if IS_ENABLED(CONFIG_IPV6)
tx_info->ip_family = AF_INET6;
ret =
cxgb4_clip_get(tx_info->netdev,
@@ -305,6 +311,7 @@ static int chcr_setup_connection(struct sock *sk,
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
@@ -395,11 +402,13 @@ static 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) {
@@ -490,12 +499,17 @@ static 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
+#if IS_ENABLED(CONFIG_IPV6)
+ || (sk->sk_family == AF_INET6 && !sk->sk_ipv6only &&
+ ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)
+#endif
+ ) {
memcpy(daaddr, &sk->sk_daddr, 4);
} else {
+#if IS_ENABLED(CONFIG_IPV6)
memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
+#endif
}

/* get the l2t index */
--
2.26.0


2020-04-09 02:32:05

by Herbert Xu

[permalink] [raw]
Subject: Re: [PATCH] cxgb4/chcr: fix building without IPv6

On Wed, Apr 08, 2020 at 08:53:06PM +0200, Arnd Bergmann wrote:
> When IPv6 support is completely disabled, the chelsio driver fails
> to build with
>
> drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_act_open_req6':
> include/net/sock.h:380:37: error: 'struct sock_common' has no member named 'skc_v6_rcv_saddr'; did you mean 'skc_rcv_saddr'?
> 380 | #define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
> | ^~~~~~~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:258:37: note: in expansion of macro 'sk_v6_rcv_saddr'
> 258 | cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0];
> | ^~~~~~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:260:36: note: in expansion of macro 'sk_v6_daddr'
> 260 | cpl->peer_ip_hi = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[0];
> | ^~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:261:36: note: in expansion of macro 'sk_v6_daddr'
> 261 | cpl->peer_ip_lo = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[8];
> | ^~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:296:27: note: in expansion of macro 'sk_v6_daddr'
> 296 | ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
> | ^~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:303:29: note: in expansion of macro 'sk_v6_rcv_saddr'
> 303 | (const u32 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8,
> | ^~~~~~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_dev_del':
> drivers/crypto/chelsio/chcr_ktls.c:401:26: note: in expansion of macro 'sk_v6_daddr'
> 401 | (const u32 *)&sk->sk_v6_daddr.in6_u.u6_addr8,
> | ^~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c: In function 'chcr_ktls_dev_add':
> drivers/crypto/chelsio/chcr_ktls.c:495:27: note: in expansion of macro 'sk_v6_daddr'
> 495 | ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED)) {
> | ^~~~~~~~~~~
> drivers/crypto/chelsio/chcr_ktls.c:498:22: note: in expansion of macro 'sk_v6_daddr'
> 498 | memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
> | ^~~~~~~~~~~
>
> There is probably a good way to fix it, but this patch just adds a
> bunch of #if checks to get it to build again, which gets a bit
> ugly.
>
> Fixes: 62370a4f346d ("cxgb4/chcr: Add ipv6 support and statistics")
> Signed-off-by: Arnd Bergmann <[email protected]>
> ---
> If you have a better idea to fix it, please send a different patch
> instead and treat this as a bug report. ;-)
> ---
> drivers/crypto/chelsio/chcr_ktls.c | 26 ++++++++++++++++++++------
> 1 file changed, 20 insertions(+), 6 deletions(-)

Please send all chelsio patches via netdev. Thanks!
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt